КРИОГЕННЫЙ ПОРШНЕВОЙ НАСОС

Изобретение относится к области криогенного машиностроения и может быть использовано в составе газификационных установок. В цилиндре криогенного поршневого насоса на высоте, равной ходу плунжера от НМТ, выполнена цилиндрическая канавка шириной от 0,2 до 0,4 от хода плунжера. Цилиндр снабжен переключателем утечки рабочей среды через поршневое уплотнение, выполненным в виде корпуса, в которой расположены верхняя, средняя и нижняя камеры. Верхняя камера подключена к нагнетательной полости, и в ней установлены седло и подпружиненный шток. Средняя камера подсоединена к цилиндрической канавке, а нижняя камера - к всасывающей полости и к каналу, который выполнен в днище цилиндра со стороны клапана впуска. В нижней камере установлены седло, клапан и поршень, диаметр которого в 1,5-2,0 раза больше диаметра штока. Изобретение позволяет повысить эффективность рабочего цикла насоса при изменении режима его работы. 1 ил.

РАДИАЛЬНО-ПОРШНЕВОЙ НАСОС С СОЕДИНИТЕЛЬНЫМ КОЛЬЦОМ

Изобретение относится к насосостроению, в частности к радиально-поршневым насосам. На поверхности соединительного кольца насоса, обращенной к головкам поршней, расположена прокладка из антифрикционного материала, повторяющая профиль соединительного кольца. Такая вставка может быть выполнена из фторопластовой композиции Ф4К20, предназначенной для работы в условиях сухого трения в широком диапазоне температур от -250 до +260°C. Техническим результатом являются повышение КПД насоса и расширение перечня перекачиваемых жидкостей. 6 з.п. ф-лы, 4 ил.

Герметичный и теплоизолированный резервуар со вспомогательной герметизирующей мембраной и оборудованный угловой конструкцией с гофрированными металлическими листами

НАСОС ДЛЯ ПЕРЕКАЧКИ КРИОГЕННОЙ ТЕКУЧЕЙ СРЕДЫ

... 1. Насос для перекачки криогенной текучей среды, например криогенного водорода, из емкости (3) в находящийся под более высоким давлением резервуар (5), включающий в себя:- цилиндр (9) с расположенным в нем поршнем (11), который может выполнять в цилиндре (9) происходящие вперед и назад возвратно-поступательные движения,при этом объем низкотемпературной камеры (13) цилиндра (9) при происходящем в направлении (I) хода поршня первом возвратно-поступательном движении поршня (11) уменьшается, а объем высокотемпературной камеры (15) цилиндра (9), которая находится на противоположной от низкотемпературной камеры (13) стороне поршня (11), соответственно увеличивается,при этом, наоборот, при происходящем в противоположном направлении (II) хода поршня втором возвратно-поступательном движении поршня (11) объем высокотемпературной камеры (15) уменьшается, а объем низкотемпературной камеры (13) соответственно увеличивается,- оканчивающийся в низкотемпературной камере (13) впускной канал (19) для текучей ...

VORRICHTUNG ZUR EXTRAKTION MIT EINEM SUPERKRITISCHEN FLUIDUM

HYDRAULISCHES ANTRIEBSSYSTEM FÜR KRYOPUMPE

Ein Antriebssystem (114) für eine Kryopumpe (110) wird bereitgestellt. Es umfasst ein Schiebergehäuse (150) mit einer Vielzahl von Ventilen (240), die darin um eine Pumpachse (118) herum angeordnet sind, sowie ein Stößelgehäuse (152) mit einer Vielzahl von Stößelbohrungen (200), wobei jede Stößelbohrung mit einem jeweiligen der Vielzahl von Ventilen (240) in Kommunikation steht. Ein Sammelhohlraum (220) sammelt Hydraulikfluid von den Stößelbohrungen. Ein Pumpenflansch (119) umfasst einen Fluideinlass (302) und einen Fluidauslass (304). Ein Einlassverteiler (305) leitet durch den Fluideinlass (302) empfangenes Hydraulikfluid an jedes der Vielzahl von Ventilen (240). Ein Auslassverteiler (332) leitet Hydraulikfluid von jedem der Ventile (240) und dem Sammelhohlraum (220) an den Fluidauslass (304).

KOLBENSTANGENDICHTUNG AN PUMPEN FÜR CRYOGENE MEDIEN

Pumpensystem fuer leichtfluechtige Fluessigkeiten

Improvements in or relating to liquid pumps

... 937,647. Reciprocating pumps. L. TYREE. Feb. 12, 1962, No. 5348/62. Class 102(1). A reciprocating pump comprises an intake chamber and inelt 32, a compression chamber 34 connected thereto by a passage 36, which is formed by a plunger 42 and sleeve 43 slidable therewith. The end 42V of the plunger and the lower aperture 43V in the sleeve 43 cooperates to form a valve which closes on the compression stroke. Towards the end of the compression stroke, a crosshead 28 contacts a sleeve 37 which is moved downwardly to close the inlet 32. On the return stroke, a locking sleeve 44 on the sleeve 43 is contacted by shoulders 42S on the piston rod 42 and at the end of this stroke, the sleeve 44 moves the sleeve 37 upwardly to uncover the port 32. A pivoted spring loaded lever 50, operated by a rack 37T and pinion 49, holds the sleeve 37 in position during each piston stroke. The intake port 32 may consist of a number of radially disposed ports which communicate with a manifold surrounding the cylinder ...

Brayton cycle engine

Compressor unit

FUEL SUPPLY CONTROL IN I C ENGINES OPERABLE ON LESS THAN ALL CYLINDERS

MORE KRYOVERDICHTER WITH LATERALLY ARRANGED PRESSURE CONTROL VALVE

PROZESSKOMPONENTEN, BEHÄLTER UND ROHRE, GEEIGNET ZUM AUFNEHMEN UND TRANSPORTIEREN VON FLUIDEN KRYOGENER TEMPERATUR

FEED PUMP

SYSTEM AND PROCEDURE FOR THE SUPPLY OF CRYOGENIC LIQUID

CRYOPUMP

PUMP SYSTEM FOR PROMOTING CRYOGENIC LIQUIDS

CONSOLIDATE FROM CARBON DIOXIDE OR LAUGHING GAS

Pump with reciprocating piston to pump liquefied gases

PUMP SYSTEM FOR PROMOTING CRYOGENIC LIQUIDS

MORE KRYOVERDICHTER WITH LATERALLY ARRANGED PRESSURE CONTROL VALVE

MORE KRYOVERDICHTER WITH LATERALLY ARRANGED PRESSURE CONTROL VALVE

MORE KRYOVERDICHTER WITH LATERALLY ARRANGED PRESSURE CONTROL VALVE

MORE KRYOVERDICHTER WITH LATERALLY ARRANGED PRESSURE CONTROL VALVE

MORE KRYOVERDICHTER WITH LATERALLY ARRANGED PRESSURE CONTROL VALVE

MORE KRYOVERDICHTER WITH LATERALLY ARRANGED PRESSURE CONTROL VALVE

MORE KRYOVERDICHTER WITH LATERALLY ARRANGED PRESSURE CONTROL VALVE

MORE KRYOVERDICHTER WITH LATERALLY ARRANGED PRESSURE CONTROL VALVE

MORE KRYOVERDICHTER WITH LATERALLY ARRANGED PRESSURE CONTROL VALVE

MORE KRYOVERDICHTER WITH LATERALLY ARRANGED PRESSURE CONTROL VALVE

Enclosed compressor

Reciprocating motor with unidirectional fluid flow

METHOD AND APPARATUS FOR DELIVERING A HIGH PRESSURE GAS FROM A CRYOGENIC STORAGE TANK

Cryogenic pump heater

A pump (118) for pumping a cryogenic fluid includes an activation portion (302) that includes at least one actuator (154). The activation portion (302) contains oil that may be cooled by the cryogenic fluid. The pump (118) further includes a pumping portion (310) that includes at least one pumping element, the at least one pumping element being operated by the at least one actuator (154), and a heater (156) associated with the activation portion (302) and configured to, when the heater (156) is active, transfer heat energy to the activation portion (302) such that the oil contained in the activation portion (302) is warmed.

HIGH PRESSURE HELIUM PUMP FOR LIQUID OR SUPERCRITICAL GAS

A pump for compressing a low temperature high density liquid gas, e.g. liquid helium, wherein the piston is driven by a motor through a four bar linkage which converts rotary motion to reciprocating motion. The pump also includes an improved piston ring assembly, piston venting apparatus and a cushioned discharge valve. A two-stage pump in combination with support equipment provides an improved pumping cycle wherein low temperature density liquid or gas e.g. liquid helium can be withdrawn from a storage reservoir, vaporized and compressed into cylinders.

PUMP SYSTEM FOR DELIVERING CRYOGENIC LIQUIDS

The invention relates to a pump system for delivering cryogenic liquids. Said pump system can be used for refuelling motor vehicles with H2. The inventive system consists of a container for receiving the cryogenic liquid. At least one pump that is configured as reciprocating pump with a pull rod actuating system and a spring return system is arranged in said container. The pump cylinder (1) of the reciprocating pump is separated into two chambers (a and b) by means of the piston (14, 17). The two chambers (a and b) are allocated to the pressure side or the suction side. The cryogenic liquid in the container is first caught in the chamber (b) by means of the pressure stroke and by exerting pulling forces onto the pull rod (29). The liquid caught in the chamber (b) is subsequently pushed further into the chamber (a) without using pressure and by resetting the pull rod (29) by means of the return spring (23) into an original position. The liquid is delivered to a pressure housing and from ...

PUMPING DEVICE, PLANT AND METHOD FOR SUPPLYING LIQUID HYDROGEN

Dispositif de pompage d'hydrogène liquide comprenant, disposés en série entre une entrée (12) pour fluide à comprimer et une sortie (13) de fluide comprimé, un premier organe (2) de compression, de préférence à piston, formant un premier étage de compression et un second organe (3) de compression à piston formant un second étage de compression, caractérisé en ce que le premier organe (2) de compression est apte et configuré pour comprimer l'hydrogène liquide dans un état supercritique et en ce que le second organe (3) de compression est apte et configuré pour comprimer l'hydrogène supercritique fourni par le premier organe de compression à une pression augmentée et notamment à une pression comprise entre 200 et 1000 bar ...

PUMP FOR CRYOGENIC FLUIDS

PUMP TOWER OF LIQUEFIED GAS STORAGE TANK

Disclosed is a pump tower provided inside a liquefied gas storage tank so as to supply or discharge liquefied gas to/from the inside of the liquefied gas storage tank. The pump tower, according to one embodiment of the present invention, comprises: a discharge pipe used for discharging the liquefied gas in the liquefied gas storage tank; an emergency pipe equipped with an emergency pump at the lower end thereof; a charge pipe for supplying the liquefied gas into the liquefied gas storage tank; and a support, which is provided on the bottom of the liquefied gas storage tank, for enabling the vertical displacement of the pump tower and restricting the horizontal movement and rotation thereof. The support comprises: a lower body fixed to a hull side; an upper body fixed to a pump tower side; and a wedge member interposed between the lower body and the upper body.

APPARATUS AND METHOD FOR OPERATING A PLURALITY OF HYRAULIC PUMPS

The problem arises of how to control a plurality of hydraulic pumps to achieve desired performance criteria, such as reduced wear and/or power consumption. The hydraulic pumps are operated in a hydraulic system for delivering hydraulic fluid to a hydraulic motor in a cryogenic pumping apparatus in an engine system fuelled with a gaseous fuel. A controller is operatively connected with the plurality of hydraulic pumps and is programmed to periodically determine a priority for each hydraulic pump as a function of predetermined criteria such as respective cumulative pumping cycles. Higher priority hydraulic pumps are operated before lower priority hydraulic pumps, that is in descending order of priority, to supply hydraulic fluid to the hydraulic motor. Hydraulic pumps are selected to operate according to the desired performance criteria.

CRYOGENIC RECIPROCATING PUMP INTERMEDIATE DISTANCE PIECE

The present invention teaches providing heating elements into the nose of an intermediate distance piece of a cryogenic reciprocating pump in order to warm the piston packing seals of the pump. The heating elements increase the temperature of the piston packing seals to limit deformation of the seals while the pump is in operation. In addition, a warm, dry vapor purge may be provided to the interior of the intermediate distance piece to reduce or eliminate rime from interfering with the piston packing seals.

HIGH PRESSURE FUEL SUPPLY SYSTEM FOR NATURAL GAS VEHICLES

This invention relates to a medium and high pressure liquid natural gas fuel system for internal combustion engines and for other cryogenic systems. A cryogenic pump comprising: (a) a vessel for containing compressed gas and liquid; (b) a first chamber in said vessel with an inlet therein for receiving gas and liquid; (c) a second chamber communicating with said first chamber for receiving and dispelling gas and liquid; (d) a third chamber communicating with said second chamber for receiving and dispelling gas and liquid; (e) a reciprocating means separating said first, second and third chambers from one another and for drawing and compressing gas and liquid in any one of the first, second and third chambers; (f) one-way inlet means for enabling gas and liquid to pass into the first chamber; (g) one-way means between said first and second chambers for enabling gas and liquid to pass from said first chamber to said second chamber; (h) one-way means for enabling gas and liquid to return from ...

Installation pour refouler puis vaporiser un gaz liquéfié sous pression.

Kolbenpumpe.

Verfahren zur Verflüssigung von Chlor.

Verfahren zum Fördern und Entlüften unter vermindertem Druck stehender und/oder beim Ansaugen zum Ausgasen neigender pumpfähiger flüssiger Medien mittels oszillierender Verdrängerpumpen und Vorrichtung zur Durchführung des Verfahrens

Hochdruck-Kolbenpumpe für tiefkalte Flüssigkeiten

Druckpumpe zum Fördern von Gemischen aus flüssigem N2O4,HNO3 und H2O

[...][...][...][...]lIQUID ONE.

PISTON PUMP.

PUMPING DEVICE FOR CRYOGENE FLUIDS.

Reciprocating pump for cryogenic liquids.

Eine Hubkolbenpumpe für kryogene Flüssigkeiten hat einen Pumpenzylinder (1) mit einer Laufbüchse (2) und einer Zylinderkopfkammer (3). Ein Pumpenkolben (4) ist in der Laufbüchse (2) linear beweglich geführt und vergrössert/verkleinert dadurch die besagte Zylinderkopfkammer (3). Ein Einlassventil (5) ist in einem Einlassbereich und ein Auslassventil (6) ist in einem Auslassbereich der Zylinderkopfkammer (3) angeordnet. Der Pumpenkolben (4) ist dazu ausgebildet, sich in der Laufbüchse (2) zwecks Bewirkung des Pumpvorganges hin- und herzubewegen. Die Laufbüchse (2) weist zumindest in einem zylinderkopfnahen Bereich eine chrom-basierte reibungsarme Innenbeschichtung auf, der Pumpenkolben (4) ist kolbenringlos und weist zumindest im Laufbüchsenbereich eine chrom-basierte reibungsarme Aussenbeschichtung auf.

Cryogenic piston pump.

Lifting piston pump i.e. plunger pump, for cryogenic liquids, has exhaust valve arranged in cylinder head and sinked adjacent to exit port, and piston head penetrating volume of cavity with maximum piston pump stroke

The pump has a cylinder head chamber (1) formed in a pump cylinder (3) between a cylinder liner (2) and a cylinder head (6). A pump piston (4) is formed in the cylinder liner and comprises a piston head (40) with a truncated cone-like structure. A valve body (5) comprises a cavity (50) with an exit port (56), where the cavity corresponds to the piston head. An exhaust valve (23) is arranged in a cylinder head and sinked adjacent to the exit port. The piston head penetrates the volume of the cavity with maximum piston pump stroke.

Plant for taking up and transporting a fluid of cryogenic temperature.

Engine of a piston pump for cryogene applications.

High-pressure pump for cryogene liquid media.

Lifting piston pump for cryogenic liquids.

Eine Hubkolbenpumpe für kryogene Flüssigkeiten hat eine Zylinderkopfkammer (1) und eine Zylinderbüchse (2) in einem Pumpenzylinder (3). Ein Pumpenkolben (4) ist in der Zylinderbüchse (2) geführt. Ein Ventilkopf (5) ist in der Zylinderkopfkammer (1) angeordnet und ein Zylinderkopf (6) ist auf den Pumpenzylinder (3) aufsetzbar. Dabei ist die Zylinderkopfkammer (1) im Pumpenzylinder (3) zwischen der Zylinderbüchse (2) und dem Zylinderkopf (6) ausgebildet und der Pumpenkolben (4) ist dazu ausgebildet, sich in der Zylinderbüchse (2) zwecks Bewirkung des Pumpvorganges hin- und herzubewegen. Der Pumpenkolben (4) weist eine Kolbenspitze (40) von kegelstumpfartiger Ausformung auf, der Ventilkopf (5) hat eine der Kolbenspitze (40) entsprechende Kavität (50) mit einer Ausgangsöffnung (56), und ein Auslassventil (23) ist angrenzend an die Ausgangsöffnung (56) versenkt im Zylinderkopf (6) angeordnet. Dabei ist die Kolbenspitze (40) dazu ausgebildet, das Volumen der Kavität (50) bei maximalem Kolbenpumpenhub ...

Dry gas seal for turbomachines with cryogenic liquid.

Linvention concerne une turbomachine munie dun dispositif détanchéité à sec (30) qui comprend un joint détanchéité comportant une partie stationnaire (40) et une partie rotative (38); un espace (44) disposé entre les parties stationnaire et rotative; un élément de sollicitation disposé à proximité de la partie stationnaire (40) et en contact avec celle-ci pour appliquer une force sur la partie stationnaire; et un labyrinthe (37) à proximité de la partie rotative (38) et construit et agencé pour recevoir un liquide destiné à être vaporisé avant dentrer dans lespace entre les parties stationnaire et rotative du joint détanchéité. La présente invention concerne également un procédé connexe.

Turbomachine to cryogenic liquid with sealing device to dry.

L’invention concerne une turbomachine (30) comportant un dispositif d’étanchéité à sec comprenant un joint d’étanchéité comportant une partie stationnaire (40) et une partie rotative (38); un espace disposé entre les parties stationnaire et rotative; un élément de sollicitation (42) disposé à proximité de la partie stationnaire (40) et en contact avec celle-ci pour appliquer une force sur la partie stationnaire; et un labyrinthe (37) à proximité de la partie rotative (38) et construit et agencé pour recevoir un liquide destiné à être vaporisé avant d’entrer dans l’espace entre les parties stationnaire et rotative du joint d’étanchéité. La présente invention concerne également un procédé connexe.

[...] for promoting pumps for conveying a cryogenic [...] conveying medium.

Bei einer Pulsationsdämpfervorrichtung (1) für diskontinuierlich fördernde Pumpen im kryogenen Betrieb zum Fördern eines kryogenen Fördermediums, umfassend mindestens eine Zuleitung zum Zuleiten des kryogenen Fördermediums in den Flüssiggasvolumenbereich; sowie zumindest ein erstes Druckgefäss (5), wobei im Innenraum des ersten Druckgefässes (5) ein erstes inneres Zylinderrohr (20) anbringbar ist, und wobei das erste innere Zylinderrohr (20) die Zuleitung zum Zuleiten von kryogenem Fördermedium in die Pulsationsdämpfervorrichtung (1) umfasst, und wobei in der Pulsationsdämpfervorrichtung (1) ein Flüssiggasvolumenbereich mit einem Volumen an inkompressiblem Flüssiggas und ein Gasvolumenbereich mit einem Volumen an kompressiblem, verdampftem Flüssiggases in gasförmigem Zustand ausbildbar ist, soll die Dämpfung der Druckpulsationen weiter verbessert werden und die Pulsationsvorrichtung (1) mit einem geringen Aufwand betreibbar sein. Dies wird dadurch erreicht, dass das erste innere Zylinderrohr ...

Piston pump and method of reducing vapor lock

Process of transport and de-airing of liquid agents which can be pumped, placed under reduced pressure and tending to gasify itself with the aspiration, using pumps floating oscillating, and device for the implementation of this process

Process and apparatus for the transfer of gas substance

PUMPING DEVICE OF A MULTIPHASE FLUID.

POMPE A CRYOGENE LIQUIDE

L'invention concerne une pompe pour comprimer et transférer un liquide cryogénique d'un récipient vers un dispositif d'utilisation. Selon l'invention, le piston 15 de la pompe est espacé de la paroi interne de l'organe tubulaire 17 dans laquelle il se trouve pour définir un jeu prédéterminé communiquant avec une chambre de pompage 19 et un espace 58 au-dessus du piston, ce jeu étant suffisamment grand pour que la vapeur dans la chambre 19 soit forcée à y passer vers espace 58 pendant la course de compression du piston; un moyen d'alimentation en liquide et de contrôle 57 maintient l'alimentation dans l'espace au-dessus du piston suffisamment importante pour empêcher que de la vapeur ne passe par le jeu vers la chambre 19; un moyen 57 de contrôle de pression maintient l'alimentation en liquide dans l'espace au-dessus du piston à une pression inférieure à celle du liquide dans la chambre 19 pendant la course de compression. L'invention s'applique notamment à l'hélium liquide ...

METHOD FOR COMPRESSING A PLURALITY OF GAS FLOW TO A SINGLE COMPRESSOR

PROCESS OF COMPRESSION OF SEVERAL GAS FLOWS ON A SINGLE COMPRESSOR

Procédé de compression d'au moins 2 flux gazeux par un compresseur unique ne supportant pas une fluctuation de débit et/ou de pression supérieure à un pourcentage critique, ledit procédé étant caractérisé en ce qu'au moins un des flux gazeux est introduit dans une capacité tampon avant d'être introduit dans le compresseur unique.

PISTON PUMP

VESSEL SEALED AND THERMALLY INSULATING SEALING DIAPHRAGM HAVING SECONDARY EQUIPPED WITH AN ARRANGEMENT OF CORRUGATED SHEET METAL ANGLE

L'invention concerne une cuve étanche et thermiquement isolante destinée au stockage d'un fluide, ladite cuve présentant une pluralité de parois présentant une structure multicouche ; une première des parois (42, 43) présente une barrière thermiquement isolante secondaire (1) comprenant : - un premier panneau isolant (44) disposé le long de l'intersection (45) entre la structure porteuse (3) de ladite première paroi (42) et la structure porteuse (3) d'une seconde paroi (43) adjacente ; et - un deuxième panneau isolant (50) juxtaposé au premier panneau isolant (44) le long d'un bord (48) dudit premier panneau isolant (44) opposé à la deuxième paroi (43) ; la première paroi (42) présentant une membrane d'étanchéité secondaire (4) comportant : - une première tôle métallique (60) ondulée qui est soudée sur une platine métallique (56) du premier panneau isolant (44) ; et - une seconde tôle métallique (86) ondulée soudée sur la platine métallique (92) du second panneau isolant (50) ; la première ...

Cryogenic liquid pump and detachable [...]

L'invention concerne une pompe liquide cryogénique munie d'un corps de pompe actionné par un ensemble moteur et intégrée à un réservoir de liquide cryogénique, ce corps de pompe amovible (10) pouvant coulisser dans un puits (12) et être mis sélectivement en communication avec le réservoir (16) par un premier clapet (24, 110) permettant, en position d'ouverture, un transfert du liquide du réservoir vers le corps de pompe avant son évacuation sous forme liquide ou gazeuse par un orifice de sortie (60) et par un second clapet (26, 260) permettant, en position d'ouverture, l'établissement d'un débit gazeux froid du ciel gazeux de ce réservoir vers une extrémité arrière (28) du corps de pompe de laquelle il est alors évacué vers l'extérieur par un orifice de purge/balayage (64). De préférence, cet orifice de purge/balayage (64) est muni en sortie d'un dispositif de réglage (62) du débit froid gazeux sortant du corps de pompe (10).

멀티 캡을 갖는 액체성 유기용제 이송 펌프

... 본 발명은 길이를 갖는 펌프관과, 상기 펌프관에 배치되어, 상하로 유동됨에 따라 펌핑력을 형성하는 펌핑 부재와, 상기 펌프관으로부터 연장되는 분사관과, 상기 펌프관의 하단에 배치되며, 유기 용제가 수용되는 저장 용기의 입구부에 결합되는 캡을 갖는 액체성 유기용제 이송 펌프에 있어서, 상기 캡은, 상기 펌프관의 하단에 연결되는 캡 몸체와, 상기 캡 몸체의 하단에 형성되며, 상기 입구부의 사이즈에 대응되도록 하방을 따라 다단으로 형성되어, 상기 입구부에 결합되는 체결부를 포함한다.

Fuel pump with improved delivery properties

The present invention relates to a fuel pump (1) which comprises a pump housing (2), a delivery element (3) for delivering fuel, a heat-generating actuator (4) for actuating the delivery element (3), a first fuel path (5) which leads from an inlet (20) to a delivery space (7), and a second fuel path (6) which leads from the inlet (20) past the heat-generating actuator (4) to a first housing opening (21), wherein the first housing opening (21) is arranged above the inlet (20) in the vertical direction (V). The present invention also relates to a fuel pump arrangement which comprises a fuel pump (1) according to the invention and a fuel tank (10) in which the fuel pump (1) is at least partially and preferably entirely arranged. The present invention also relates to a method for operating a fuel pump (1).

DEVICE AND METHOD FOR PUMPING A CRYOGENIC FLUID

The invention relates to a device for pumping a cryogenic fluid, consisting of a tank (1) for storing a cryogenic fluid containing cryogenic liquid, a cryogenic pump (3) having an inlet pressure loss (net positive suction head, NPSH), and a suction line (2) connecting the tank (1) to the pump (3), said pumping device including a system (9, 18, 19) for controlling the pressure in the tank (1) for selectively maintaining said pressure at least equal to the saturation pressure of the stored cryogenic fluid plus the inlet pressure loss (NPSH) of the cryogenic pump and optionally plus the value of the pressure losses owing to the pipes forming the suction line (2) connecting the tank (1) to the pump (3). The invention is characterised in that the pressure-control system (9, 18, 19) includes a duct (9) connecting a high-pressure outlet of the pump (3) to the tank (1) for selectively returning the pumped cold fluid to the tank (1), said duct (9) including an expansion valve (99) for returning ...

Ball bearing and pump for cryogenic use

A ball bearing for a cryogenic application including an inner ring and an outer ring positioned around the inner ring. The inner ring and the outer ring define a raceway therebetween. The ball bearing includes a plurality of rolling balls disposed in the raceway and a slug separator positioned between and slidingly engaging each of adjacent pairs the rolling balls. The slug separator defines an exterior surface thereon, which has a recess extending at least partially into the slug separator. The recess is configured to flow cryogenic fluid therethrough.

Rotary piston motor

An internal combustion, reciprocating piston, motor has a rotating cylinder block. A journal bearing supports a roller that is fastened to a piston connecting rod or fastened to the piston so the roller pushes against an inclined surface on a stationary guide track fastened to a motor housing in order to cause the cylinder block and pistons to rotate. A lubricant is fed from a passageway on the rotational axis of the drive shaft radially outward, through passageways that align, and though a skirt on the piston, in order to lubricate the journal bearing. The rotating piston chambers are sealed against a stationary cylinder head by annular rings at the end of each chamber, and by curved linear seals extending between adjacent annular rings.

Cryogenic pump multi-part piston with thermal expansivity compensated polytetrafluoroethylene seal rings

A reciprocating pump for a cryogenic fluid includes a pump cylinder made of a material with low thermal expansivity, a piston displaceable in the pump cylinder, and self-lubricating piston rings made of polytetrafluorethylene held on the circumferential surface of the piston. The rings have a larger thermal expansivity than the pump cylinder. The arrangement allows optimum matching of piston rings and pump cylinder at cryogenic fluid pumping temperatures. The piston has a core made of a material with relatively large thermal expansivity which is surrounded by a spacer sleeve made of a material with a low coefficient of thermal expansion. The core protrudes on both sides from the spacer sleeve and has expanding regions increasing conically towards its free ends. The piston rings surround the core in the expanding regions and are supported against the end faces of spacer sleeve. The conical expanding regions bias the rings toward the cylinder at low temperatures to insure effective sealing ...

Apparatus and method for supercritical fluid extraction

An apparatus for supercritical fluid extraction incorporates a removable extraction cartridge which in operation has insignificant pressure difference between its inside and outside walls. Because of the low pressure difference, the extraction cartridge need not have the strength to withstand significant pressure and can be made out of molded plastic for disposable use as well as stainless steel and/or machined plastic for reusability. The extraction cartridge can be removed and opened for sample access without the use of tools. The outside of the cartridge can be purged after it is installed in a heated high pressure vessel to remove contamination from its exterior. In one embodiment, the extractor includes a fraction collector fr extractants, an automatic sample changer and an automatic cartridge transfer mechanism which provide completely automated extractions.

Process, apparatus, and kit for assembling and disassembling a cryogenic pump

A process, apparatus, and kit for horizontally assembling a cryogenic pump with an apparatus generally including a workstand, a plurality of support stands longitudinally spaced apart from the workstand and a roller transport structure. The kit includes the apparatus and a beam crane for attachment to the apparatus for assembling and disassembling the cryogenic pump at the point of use.

Suction valve assembly of reciprocating compressor

A suction valve assembly of a reciprocating compressor comprises: a valve supporting body inserted-fixed to a valve mounting portion formed at a piston and provided with at least one suction hole through which a fluid introduced into a suction passage of the piston is supplied to a compression chamber of a cylinder; and a suction valve mounted at the valve supporting body to be rotatable within a certain range, for opening and closing the suction hole formed at the valve supporting body. According to this, a damage of the suction valve due to fatigue is prevented thus to enhance a reliability of the compressor.

Piston Cartridge for Piston Pump

A hydraulic piston pump includes a piston disposed in a blind housing bore of a piston housing and that reciprocates to generate a pumping action. To accommodate the piston, a piston cartridge is installed in each of the housing bores. The piston cartridge includes a piston sleeve having an inner sleeve periphery, a first outer sleeve periphery, and a second outer sleeve periphery. The inner sleeve periphery is configured to establish sliding contact with the piston. The first outer sleeve periphery has a first outer sleeve diameter that is larger than a second outer sleeve diameter associated with the second outer sleeve periphery. To seal against the blind housing bore, a liner cap having a cylindrical liner wall and an axial liner cover is disposed over the first outer sleeve periphery. The axial liner cover abuts a housing bore ceiling of the blind housing bore and can receive hydraulic fluid there through. 1. A hydraulic pump comprising:a piston housing having a plurality of housing bores disposed therein each defining a bore axis, each of the plurality of housing bores further configured as a blind bore including a housing bore wall axially terminating in a housing bore ceiling;a plurality of pistons accommodated one each in the plurality of housing bores to reciprocatingly move with respect to the bore axis; anda piston cartridge concentrically installed in each of the plurality of housing bores, the piston cartridge including a piston sleeve having an inner sleeve periphery that defines a sleeve bore and is configured to allow movement of one of the plurality of pistons; the piston cartridge further having a liner cap disposed on the piston sleeve and having an axial liner cover extending over the sleeve bore configured to establish sealing contact with the housing bore ceiling.2. The hydraulic pump of claim 1 , wherein the axial liner cover further includes fluid aperture disposed therethrough that aligns with and receives hydraulic fluid from a fluid ...

Hydraulic Distributor for Pump

A pump has a pump body and at least first and second pumping elements, each pumping element including a piston defining a head-end and a rod-end. The pump receives a pressurized fluid at an inlet, and returns fluid through a drain outlet. A hydraulic distributor operates to fluidly connect the head end of an extending piston to the pressurized fluid, and the rod end of the extending piston to the drain outlet. The hydraulic distributor further connects the rod-end of a retracting piston to the drain outlet, and the rod-end of one or more retracting pistons to the drain or to a return pressure, which is lower than an extending pressure. 1. A pump , comprising:a pump body;a first pumping element and a second pumping element, each of the first and second pumping elements being independently actuatable to perform a pumping stroke that delivers a pumped amount of fluid at a pump discharge, wherein each of the first and second pumping elements includes a piston slidably disposed to reciprocate within a cylinder and defining a head-end volume and a rod-end volume on either side of the piston within the pump body;a first head-end passage formed in the pump body and fluidly connected with the head-end volume of the piston of the first pumping element, the first head-end passage forming a first head-end opening;a second head-end passage formed in the pump body and fluidly connected with the head-end volume of the piston of the second pumping element, the second head-end passage forming a second head-end opening;a first rod-end passage formed in the pump body and fluidly connected with the rod-end volume of the piston of the first pumping element, the first rod-end passage forming a first rod-end opening;a second rod-end passage formed in the pump body and fluidly connected with the rod-end volume of the piston of the second pumping element, the second rod-end passage forming a second rod-end opening;a high-pressure fluid inlet formed in the pump body, the high-pressure fluid ...

PUMP FOR LIQUEFIELD GASES

Damping assembly

A damping assembly for a valve is provided. The valve is configured to move between an open position and a close position. The valve includes a valve element and a valve stem disposed within a head. The damping assembly includes a damping chamber defined within the head. The damping assembly defines a sidewall. The damping assembly also includes a collar configured to receive the valve stem. The collar includes a collar stem. The collar also includes a collar head having an outer diameter. The collar head includes a side surface. The damping assembly includes a liquid passageway. The liquid passageway is being defined by a radial clearance between the side surface of the collar head and the sidewall of the damping chamber. The liquid passageway is configured to control a flow of a liquid as the valve moves between the open position and the closed position.

Apparatus and method for supercritical fluid extraction

低温物質の移送装置およびこれを用いた低温液化ガス供給システム

ОХЛАЖДЕНИЕ СЖИЖЕННОГО ПРИРОДНОГО ГАЗА В ПРОЦЕССЕ РАБОТЫ

FIELD: storage or distribution of gases or liquids. SUBSTANCE: invention relates to fuel supply means. System for cryogenic fuel delivery to a fuel tank comprises an initial tank, a pump, a cooling component, a pipeline, having an ambient temperature, in which the first end is connected to the pump outlet and the second end is connected to an adjustable inlet pipeline, a temperature-sensitive valve controller and an adjustable inlet pipeline in communication with the fuel tank. Pump communicates with the top and bottom of the tank through a steam line and a liquid line, respectively. Cooling component is configured to surround the cooling pipe with a cooling cryogenic fluid. Cooling pipe is connected to the outlet of the pump at the first end and with an adjustable inlet pipeline at the second end. Temperature-sensitive valve controller is configured to measure the temperature of the fuel in the adjustable inlet pipeline and to regulate the flow of fuel through the cold-fuel control valve and the warm-fuel control valve. EFFECT: use of the invention achieves the lowest reasonable saturation pressure while dispensing a cryogenic fluid to a holding tank on a use device. 16 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 656 082 C2 (51) МПК F17C 5/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04B 15/08 (2018.02); F04B 37/08 (2018.02); F17C 5/007 (2018.02) (21)(22) Заявка: 2015149812, 22.04.2014 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): ЧАРТ ИНК. (US) Дата регистрации: 30.05.2018 R U 22.04.2014 (72) Автор(ы): ДРУБ Том (US) (56) Список документов, цитированных в отчете о поиске: US 5771946 A, 30.06.1998. RU 2258174 C2, 10.08.2005. RU 2146027 C1, 27.02.2000. SU 356423 23. A1, 10.1972. DE 102009037108 А1, 17.02.2011.. 22.04.2013 US 61/814,697 (43) Дата публикации заявки: 26.05.2017 Бюл. № 15 (45) Опубликовано: 30.05.2018 Бюл. № 16 (85) Дата начала рассмотрения заявки PCT ...

Герметичный и теплоизолированный резервуар со вспомогательной герметизирующей мембраной и оборудованный угловой конструкцией с гофрированными металлическими листами

Изобретение относится к герметизированному и теплоизолированному резервуару, предназначенному для хранения жидкости. Резервуар имеет множество стенок, имеющих многослойную конструкцию. Первый металлический лист (60) имеет два перпендикулярных гофра (65, 66) и первый и второй края (61, 62), которые расположены напротив друг друга и параллельны пересечению (45) между несущей конструкцией (3) первой стенки (42) и несущей конструкцией (3) соседней второй стенки (43). Первый край (61) расположен ближе ко второй стенке (43), чем второй край (62). Первый край (61) первого металлического листа (60), с одной стороны приварен к малой металлической пластине (56) первой изолирующей панели (44), чтобы удерживать первый металлический лист (60) на первой изолирующей панели (44), а с другой стороны приварен к первому фланцу металлической угловой пластины (67), которая имеет второй фланец, приваренный к металлическому листу (60) вспомогательной герметизирующей мембраны (4) второй стенки (43). Второй металлический ...

Поршневое кольцо для поршневого компрессора и поршневой компрессор

Изобретение относится к поршневому кольцу, которое содержит замкнутое базовое кольцо (5) и уплотняющее кольцо (3). Базовое кольцо (5) имеет переднюю поверхность (5а), ориентированную в радиальном наружном направлении, а уплотняющее кольцо (3) имеет переднюю поверхность (3е), ориентированную в радиальном наружном направлении, и круговую внутреннюю поверхность (3f), ориентированную в радиальном внутреннем направлении. Уплотняющее кольцо (3) имеет три тангенциальных разреза (3d), которые проходят тангенциально относительно внутренней поверхности (3f) уплотняющего кольца, так что уплотняющее кольцо (3) имеет три сегмента (3а, 3b, 3с), расположенных последовательно в окружном направлении (U) и отделенных тангенциальным разрезом (3d). Замкнутое базовое кольцо (5) и уплотняющее кольцо (3) расположены последовательно в продольном направлении (L) перпендикулярно окружному направлению (U). Поршневое кольцо также содержит верхнее кольцо (2), расположенное с примыканием к уплотняющему кольцу (3) в ...

Method of Operating Cryogenic Pump and Cryogenic Pump System

A cryogenic pump system includes a supply of liquid natural gas, a source of hydraulic fluid, a cryogenic pump, and an electronic control module. The cryogenic pump is operatively arranged with the supply of liquid natural gas and the source of hydraulic fluid. The cryogenic pump is configured to operate using the source of hydraulic fluid to compress at least some of the supply of liquid natural gas for delivery to an engine. The electronic control module is operably arranged with the cryogenic pump and configured to selectively operate the cryogenic pump. Control strategies for operating the cryogenic pump system are disclosed which have reduced power demands. 1. A method of operating a cryogenic pump comprising:energizing a hydraulic pilot actuator in fluid communication with a spool valve to move the spool valve from a drain position to an extended fill position, the spool valve biased to the drain position;in response to the spool valve being displaced from the drain position, directing a pump flow of hydraulic fluid through the spool valve to a drive cylinder such that the pump flow of hydraulic fluid acts against a drive piston reciprocally disposed within the drive cylinder to move the drive piston from a retracted position to an extended pump position, the drive piston linked to a cryo-plunger assembly, the cryo-plunger assembly in communication with a supply of liquid natural gas;in response to the drive piston moving to the extended pump position, actuating the cryo-plunger assembly to perform a pump stroke to compress at least some of the supply of liquid natural gas;de-energizing the hydraulic pilot actuator after an energizing period of time has elapsed;controlling a rate of spool return of the spool valve from the extended fill position to the drain position after the hydraulic pilot actuator is de-energized such that the drive piston is in the extended pump position after a dwell period of time after the energizing period of time has elapsed;wherein ...

CRYOGENIC VIBRATION SENSOR AND INSULATOR PAD ASSEMBLY, AND CRYOGENIC PUMPS INCLUDING THE SAME

A cryogenic-rated vibration sensor generally includes a cryogenic-rated accelerometer mounted to a top planar surface of an insulation block, wherein the insulation block includes a threaded opening on a bottom planar surface thereof for attachment to an object. Also disclosed are cryogenic pumps including the cryogenic-rated vibration sensor. 1. A cryogenic pump comprising:a suction pot including an inlet at a lower portion;a head plate attached to a top of the suction port, wherein the cap includes a discharge outlet;a centrifugal pump comprising a vertically oriented pump shaft disposed within the suction pot and suspended from the cap, wherein the pump is configured to move a cryogenic fluid through the inlet to the discharge outlet; andat least one vibration sensor mounted to a least one component of the cryogenic pump, wherein the at least one vibration sensor comprises an insulation block having a bottom surface in direct contact with the at least component and an accelerometer coupled to a top surface of the insulation block and free from direct contact with the at least one pump component.21. The cryogenic pump of clam , wherein the at least one component is the head plate and the vibration sensor is mounted to the head plate and is parallel to axial rotation of the pump shaft.31. The cryogenic pump of clam , wherein the insulation block is a polytetrafluoroethylene material.41. The cryogenic pump of clam , wherein the insulation block is a thermoset reinforced plastic comprising a reinforcing substrate and a thermoset resin binder.54. The cryogenic pump of clam , wherein the reinforcing substrate is selected from the group consisting of woven glass cloth , random glass mat , glass filaments , woven canvas cotton fabric , woven linen cotton fabric , paper , woven aramid fabric , random mat aramid , woven graphite fabric , and random mat graphite and the thermoset resin binder is selected from epoxies , melamines , phenolics , polyesters , and silicones.61. ...

LIQUID SUPPLY SYSTEM

A liquid supply system that can supply liquid efficiently with reduced time needed for precooling. The liquid supply system includes a first fluid channel through which cryogenic liquid flows from an inlet to an outlet via a first pump chamber P and a second fluid channel through which cryogenic liquid flows from the inlet to the outlet via a second pump chamber P. The height of the location at which the direction of the first fluid channel changes from the vertically upward direction to the vertically downward direction and the location at which the direction of the second fluid channel changes from the vertically upward direction to the vertically downward direction are the same. 1. A liquid supply system comprising:a container having an inlet and an outlet for cryogenic liquid and provided with a pump chamber inside it;a shaft member that moves vertically upward and downward in the container;a first bellows and a second bellows disposed one above the other along the vertical direction in the container, each of which expands and contracts with upward and downward motion of the shaft member;a first pump chamber formed by a space surrounding the outer circumference of the first bellows;a second pump chamber formed by a space surrounding the outer circumference of the second bellows;a first fluid channel through which cryogenic liquid flows from the inlet to the outlet via the first pump chamber; anda second fluid channel through which the cryogenic liquid flows from the inlet to the outlet via the second pump chamber,wherein a height of a location at which the direction of the first fluid channel changes from the vertically upward direction to the vertically downward direction and a height of a location at which the direction of second fluid channel changes from the vertically upward direction to the vertically downward direction are the same.2. A liquid supply system according to claim 1 , wherein the first pump chamber is formed by a space between a first valve ...

HEAT INSULATION STRUCTURE AND LIQUID SUPPLY SYSTEM

A heat insulation structure and a liquid supply system that can prevent breakage of a heat insulation member while providing satisfactory heat insulation. The heat insulation structure includes heat insulation members provided between two components and having heat conductivity lower than the two components and a slidable member slidable on the heat insulation member At least two of the heat insulation members are arranged along the direction of compression by the two components, and at least one of the slidable member is disposed between the heat insulation members which are adjacent to each other. The heat insulation members and the slidable member are allowed to be displaced in directions perpendicular to the direction of compression. 1. A heat insulation structure provided in a joint portion between two components fixed to each other and subject to a compressive force , comprising;heat insulation members disposed between the two components and made of a material having heat conductivity lower than the two component; anda slidable member slidable on the heat insulation members,wherein at least two of the heat insulation members are arranged along the direction of compression, and at least one of the slidable member is disposed between the heat insulation members which are adjacent to each other, the heat insulation members and the slidable member being allowed to be displaced in directions perpendicular to the direction of compression.2. The heat insulation structure according to claim 1 , further comprising a restriction member made of a resin that restricts the amount of movement of the heat insulation members and the slidable member in directions perpendicular to the direction of compression.3. The heat insulation structure according to claim 2 , wherein the restriction member is fixed on one of the two components claim 2 , and the insulation member that is in contact with the other component among the two components on which the restriction member is not ...

BOOSTER PUMP

The present invention prevents a gas generated by evaporating a low-temperature liquid from remaining in an internal space of a booster pump and enhances efficiency of discharge and suction. A reciprocating booster pump includes a cylinder a piston a suction check valve and a discharge check valve The cylinder has a suction port and a discharge port The suction port suctions a low-pressure, low-temperature liquid to an inside. The discharge port boosts the low-temperature liquid and discharges the low-temperature liquid to an outside. The piston reciprocates in an internal space of the cylinder. The suction check valve opens and closes a suction flow passage between the internal space and the suction port. The discharge check valve opens and closes a discharge flow passage between the internal space and the discharge port. The suction check valve is configured such that if a relative pressure at the internal space establishing a pressure of the low-temperature liquid before being suctioned into the cylinder as a criterion is higher than a predetermined pressure, the suction check valve closes. 1. A reciprocating booster pump comprising:a cylinder that has a suction port and a discharge port, the suction port suctioning a low-pressure, low-temperature liquid to an inside, the discharge port being for boosting and discharging the low-temperature liquid to an outside;a piston that reciprocates in an internal space of the cylinder:a suction check valve that opens and closes a suction flow passage between the internal space and the suction port;a discharge check valve that opens and closes a discharge flow passage between the internal space and the discharge port;a first biasing member that biases a valve element of the suction check valve in a direction away from a valve seat; anda second biasing member that biases the valve element in a direction of approaching the valve seat, whereinthe suction port is disposed to be communicated with an upper end portion of the ...

Fluid energy machine, method for generating a fluid volume flow and/or for compressing a fluid and method for refuelling a vehicle

The invention relates to a fluid energy machine and a method for generating a fluid-volume flow and for compressing a fluid by means of the fluid energy machine according to the invention. The invention also relates to a method for refuelling a vehicle with a fluid using the method according to the invention for generating a fluid-volume flow and for compressing a fluid, and to the use of a fluid energy machine according to the invention for refuelling a motor vehicle. The fluid energy machine comprises a crank drive ( 20 ) and a drive device ( 10 ) that is mechanically connected to the crank drive ( 20 ), by means of which drive device a torque can be introduced into the crank drive ( 20 ), as well as a piston-cylinder unit ( 30 ), the piston ( 32 ) of which is mechanically connected to the crank drive ( 20 ). The drive device ( 10 ) comprises two electric motors ( 50, 60 ), the respective output members ( 51, 61 ) of which are mechanically connected to the crank drive ( 20 ).

CRYOGENIC PUMPS

A reciprocating cryogenic pump comprises a piston reciprocable within a pumping chamber The pumping chamber has an inlet suction valve for cryogenic liquid to be pumped and an outlet for high pressure cryogenic liquid. The inlet valve for the cryogenic liquid communicates with a cryogenic liquid reception chamber in the cold end or head of the pump The pump head is at least partially surrounded by a first jacket retaining primary vacuum insulation. The first jacket is itself at least partly surrounded by a second jacket The jacket defines a chamber for the reception of a coolant fluid such as liquid nitrogen and the second jacket has an inlet and an outlet for the liquid nitrogen. The thermal insulation can be further enhanced by a trapped gas space between the first jacket and an inner sleeve the latter defining with an outer sleeve vacuum insulation for the pumping chamber 1. A reciprocating cryogenic pump including a pump head , comprising:a pumping chamber and a piston reciprocable within the pumping chamber;an inlet to the pumping chamber for cryogenic liquid;an outlet from the pumping chamber for high pressure cryogenic liquid; anda cryogenic liquid reception chamber in the pump head for the cryogenic liquid, the cryogenic liquid reception chamber including a degassing outlet for evacuating vaporised cryogenic liquid from the cryogenic liquid reception chamber during cool down, a first jacket retaining insulation and at least partially surrounding said pump head, and a second jacket at least partially surrounding the first jacket, the second jacket defining a chamber for receiving a coolant fluid and including an inlet and an outlet for the coolant fluid.2. The cryogenic pump according to claim 1 , further comprising an inlet suction valve intermediate the cryogenic liquid reception chamber and the pumping chamber for permitting the passage of the cryogenic liquid from the cryogenic liquid reception chamber o the pumping chamber.3. The cryogenic pump according ...

Cryogenic Pumps

A cryogenic pump for a cryogenic liquid has associated therewith a heater for vaporizing the cryogenic liquid. The heater comprises a chamber (bounded by an inner sleeve and an outer sleeve), a helical heating coil having a plurality of turns disposed within the chamber, an inlet for cryogenic liquid communicating with the heat exchange coil and an outlet for resulting heated fluid communicating with the heat exchange coil. An inlet and an outlet from the water chamber for heat exchange fluid are provided. The heater chamber has a helical baffle having a plurality of turns for guiding the heat exchange fluid over the turns of the heat exchange coil. The turns of the baffle are interspaced with the turns of coil. 1. A cryogenic pump for pumping a cryogenic liquid natural gas has associated therewith a heater for vaporizing the cryogenic liquid , the heater comprising:(a) a chamber bounded by an inner sleeve and an outer sleeve;(b) a helical heat exchange coil having a plurality of turns disposed within said heater chamber;(c) an inlet with cryogenic liquid communicating with said heat exchange coil;(d) an outlet for resulting vaporized fluid communicating with said heat exchange coil;(e) an inlet to said heater chamber for a heat exchange fluid; and 'wherein said heater chamber has a helical baffle having a plurality of turns for guiding said heat exchange fluid over said turns of said heat exchange coil, said turns of said baffle being interspaced with said turns of said heat exchange coil.', '(f) an outlet from said heater chamber for said heat exchange fluid;'}2. The cryogenic pump of claim 1 , wherein said baffle is integral with said inner sleeve or said outer sleeve.3. The cryogenic pump of claim 1 , further comprising a piston operable to discharge cryogenic liquid from a pumping chamber within a pump housing.4. The cryogenic pump of claim 3 , wherein said pump housing is of generally elongate claim 3 , cylindrical configuration.5. The cryogenic pump of claim ...

Cryogenic Pump

A cryogenic pump is typically used to supply high pressure natural gas to an engine. The pump has a piston operable to discharge cryogenic liquid from a pumping chamber within a pump housing. The cryogenic liquid exits the chamber through an outlet port in which a check valve is positioned. The check valve has a valve member which is loaded by a spring and is retained by a retaining member accessible from outside the housing. The check valve has an inlet which is axial with the valve member and an outlet which is transverse to the axis of the valve member. 1. A cryogenic pump for pumping liquid natural gas comprising:(a) a piston operable to discharge cryogenic liquid from a pumping chamber within a pump housing;(b) an outlet port from said pumping chamber, said outlet port disposed in said pump housing; and (i) a valve member;', '(ii) a demountable retaining member accessible from the exterior of said pump housing;', '(iii) an inlet axial with said valve member and transverse to the axis of said pumping chamber of said cryogenic pump; and', '(iv) an outlet transverse to the axis of said valve member and parallel to the axis of said pumping chamber of said cryogenic pump., '(c) a check valve in said outlet port, said check valve comprising2. The cryogenic pump of claim 1 , wherein said retaining member comprises a sleeve for guiding said valve member.3. The cryogenic pump of claim 2 , wherein said sleeve is integral with said retaining member.4. The cryogenic pump of claim 1 , wherein said valve member is spring-loaded.5. The cryogenic pump of claim 4 , wherein said valve member comprises a cylindrical body and a frustoconical head claim 4 , which claim 4 , when said check valve is in its closed position claim 4 , sealingly engages claim 4 , under bias of said spring claim 4 , a complementary valve seat formed in said pump housing.6. The cryogenic pump of claim 5 , wherein said head is formed from plastic material.7. The cryogenic pump of claim 5 , wherein said head ...

MULTI-PLUNGER CRYOGENIC PUMP HAVING INTAKE MANIFOLD

A cryogenic pump is disclosed as having a plunger housing with a plurality of barrels formed in a ring around a central axis, and a plurality of plungers. Each of the plurality of plungers may be reciprocatingly disposed within a different one of the plurality of barrels. The cryogenic pump may also include an inlet manifold connected to the plunger housing and having a plurality of bores. Each of the plurality of bores may be open to a corresponding one of the plurality of barrels. The cryogenic pump may also have at least one orifice in fluid communication with each of the plurality of bores, and an inlet check valve disposed between each of the plurality of bores and the at least one orifice. The inlet check valve may be movable to selectively allow flow between the at least one orifice and a corresponding one of the plurality of barrels. 1. A liner for a cryogenic pump having a manifold , comprising:a generally cylindrical body having a top end and a bottom end;an internal bore formed in the generally cylindrical body and passing from the top end through the bottom end, the internal bore being configured to receive a plunger of the cryogenic pump; anda flange located at the top end and configured to engage the manifold.2. The liner of claim 1 , further including threads located on an outer surface of the generally cylindrical body and configured to connect the generally cylindrical body to walls of the barrel.3. The liner of claim 2 , wherein a majority of an axial length of the outer surface is thread-free.4. A manifold for a cryogenic pump claim 2 , comprising:a generally cylindrical body having a top end and a bottom end;a plurality of bores arranged in a ring around a central axis of the generally cylindrical body, each of the plurality of bores being configured to communicate with a different plunger barrel of the cryogenic pump; andat least one inlet orifice in fluid communication with each of the plurality of bores.5. The manifold of claim 4 , wherein the ...

Cryogenic Pump Heater

A pump for pumping a cryogenic fluid includes an activation portion that includes at least one actuator. The activation portion contains oil that may be cooled by the cryogenic fluid. The pump further includes a pumping portion that includes at least one pumping element, the at least one pumping element being operated by the at least one actuator, and a heater associated with the activation portion and configured to, when the heater is active, transfer heat energy to the activation portion such that the oil contained in the activation portion is warmed. 1. A pump for pumping a cryogenic fluid , comprising:an activation portion that includes at least one actuator, the activation portion containing oil;a pumping portion that includes at least one pumping element, the at least one pumping element being operated by the at least one actuator; anda heater associated with the activation portion and configured to, when the heater is active, transfer heat energy to the activation portion such that the oil contained in the activation portion is warmed.2. The pump of claim 1 , further comprising at least one pushrod disposed between the at least one actuator and the at least one pumping element claim 1 , the at least one pushrod operating to transfer motion from the at least one actuator to operate the at least one pumping element.3. The pump of claim 1 , wherein the oil contained in the activation portion is oil used to lubricate moving and sliding components within the activation portion.4. The pump of claim 1 , wherein the at least one actuator is a hydraulic actuator and wherein the oil contained in the activation portion is hydraulic oil used to provide a hydraulic force input to the at least one actuator.5. The pump of claim 1 , wherein the heater is an electrically operated heater that is connected to a power module and arranged to be activated by a controller.6. The pump of claim 5 , wherein the controller is programmed to activate the heater during a startup sequence ...

REFRIGERANT COMPRESSOR AND FREEZING APPARATUS USING SAME

Refrigerant compressor includes electromotive element, and compression element that is driven by electromotive element, includes a slider, and compresses a refrigerant. Freezer oil that lubricates the slider is added with fullerene having a diameter that ranges from 100 pm to 10 nm. 1. A refrigerant compressor comprising:an electromotive element; anda compression element that is driven by the electromotive element, includes a slider, and compresses a refrigerant,wherein a freezer oil that lubricates the slider is added with a fullerene having a diameter that ranges from 100 pm to 10 nm.2. The refrigerant compressor according to claim 1 , wherein one of a C60 fullerene, a C70 fullerene, and a higher-order fullerene including a larger number of carbons than a number of carbons of the C70 fullerene; or', 'a mixed fullerene obtained by mixing at least two of the C60 fullerene, the C70 fullerene, and the higher-order fullerene., 'the fullerene is3. The refrigerant compressor according to claim 1 , wherein a shape of the fullerene is spherical or elliptic.4. The refrigerant compressor according to claim 1 , wherein an additive amount of the fullerene is less than or equal to a saturating amount of dissolution with respect to the freezer oil.5. The refrigerant compressor according to claim 1 , whereinthe refrigerant compressed by the compression element is a hydrofluorocarbon (HFC) refrigerant or a mixed refrigerant including the HFC refrigerant, and one of ester oil, alkylbenzene oil, polyvinyl ether, and polyalkylene glycol; or', 'mixed oil of at least two of the ester oil, the alkylbenzene oil, the polyvinyl ether, and the polyalkylene glycol., 'the freezer oil is6. The refrigerant compressor according to claim 1 , wherein one natural refrigerant of R600a, R290, and R744; or', 'a mixed refrigerant that includes at least one of the R600a, the R290, and the R744, and, 'the refrigerant compressed by the compression element is one of mineral oil, ester oil, alkylbenzene oil ...

VIBRATIONALLY ISOLATED CRYOGENIC SHIELD FOR LOCAL HIGH-QUALITY VACUUM

The disclosure describes various aspects of a vibrationally isolated cryogenic shield for local high-quality vacuum. More specifically, the disclosure describes a cryogenic vacuum system replicated in a small volume in a mostly room temperature ultra-high vacuum (UHV) system by capping the volume with a suspended cryogenic cold finger coated with a high surface area sorption material to produce a localized extreme high vacuum (XHV) or near-XHV region. The system is designed to ensure that all paths from outgassing materials to the control volume, including multiple bounce paths off other warm surfaces, require at least one bounce off of the high surface area sorption material on the cold finger. The outgassing materials can therefore be pumped before reaching the control volume. To minimize vibrations, the cold finger is only loosely, mechanically connected to the rest of the chamber, and the isolated along with the cryogenic system via soft vacuum bellows. 1. A method for using a cryogenic device in a vacuum chamber with a viewport , comprising:cooling a cold finger of the cryogenic device that forms a capping volume that encloses a device under test (DUT) placed on a mounting system inside the vacuum chamber, the cold finger having an opening or window;providing a shield positioned inside the vacuum chamber and over and around a portion of the cold finger to reduce thermal loading of the cold finger, the shield having a window in alignment with the opening or window of the cold finger and the viewport of the vacuum chamber; andperforming one or more quantum operations using the DUT by applying laser beams generated outside the vacuum chamber directed at the DUT through the viewport of the vacuum chamber, the window of the shield, and the opening or window of the cold finger.2. The method of claim 1 , wherein the enclosure provided by the shape of the cold finger restrict paths for outgassing materials to reach the capping volume to allow a localized vacuum in the ...

Cryogenic Pump for Liquefied Natural Gas

A cryogenic pump for pumping liquefied natural gas (LNG) from a cryogenic tank storing LNG includes a drive assembly and a pump assembly disposed along a pump axis. The drive assembly includes a spool housing having a plurality of spool valves arranged around the pump axis, a tappet housing having a plurality of tappet bores with slidable tappets arranged around the pump axis, and spring housing including a plurality of movably disposed pushrods urged upward by a plurality of associated pushrod springs. Hydraulic fluid received by a hydraulic fluid inlet in the drive assembly is directed by the spool valves to the tappet bores to move the tappets downward against the pushrods. To collect the hydraulic fluid, the lowermost spring housing also includes a collection cavity formed therein that can return the hydraulic fluid to a hydraulic fluid outlet.

Hydraulic actuator for cryogenic pump

A hydraulic actuator for a cryogenic pump is provided. The hydraulic actuator includes a piston. The hydraulic actuator also includes a base housing. The hydraulic actuator further includes a push rod assembly. The push rod assembly includes a tube guide. The push rod assembly also includes a push rod. The push rod is adapted to reciprocate within the tube guide. The hydraulic actuator also includes a sealing assembly having a hollow cylindrical configuration. The sealing assembly includes a first static seal portion. The first static seal portion being connected to the base housing. The sealing assembly also includes a second static seal portion. The second static seal portion is connected to the push rod. The sealing assembly further includes an expandable annular bellow extending between the first and second static seal portions. The sealing assembly is adapted to prevent flow of a first fluid in a first direction.

HEAT INSULATING VESSEL FOR LOW TEMPERATURE LIQUEFIED GAS PUMP

A heat insulating vessel for a low temperature liquefied gas pump, which includes an inner tank configured to accommodate low temperature liquefied gas, an outer tank provided externally around the inner tank, and a low temperature liquefied gas pump disposed inside the inner tank. The outer tank has an outer tank upper part that is an upper end portion thereof, and an outer tank body other than the outer tank upper part. A lid structure having a heat-insulated structure detachably fitted into an upper part of the inner tank. The pump is fixed to the lid structure, and a suction pipe and a discharge pipe are insertedly fixed to the lid structure. A vacuum insulating layer is provided between the inner tank and the outer tank. With this heat insulating vessel for the low temperature liquefied gas pump, adiabaticity of the lid structure and maintainability of the pump are increased. 1. A heat insulating vessel for a low temperature liquefied gas pump , comprising an inner tank configured to accommodate low temperature liquefied gas , an outer tank provided externally around the inner tank , and a low temperature liquefied gas pump disposed inside the inner tank ,wherein the outer tank has an outer tank upper part that is an upper end side portion thereof, and an outer tank main body other than the outer tank upper part,wherein a lid structure having a heat-insulated structure detachably fitted into an upper part of the inner tank is provided,wherein the pump is fixed to the lid structure, and a suction pipe and a discharge pipe are insertedly fixed to the lid structure, andwherein a vacuum insulating layer is formed between the inner tank and the outer tank.2. The heat insulating vessel of claim 1 , wherein a vacuum-pump port is formed in the outer tank upper part.3. The heat insulating vessel of claim 1 , wherein a plurality of pressure detecting pipes and a drain pipe penetratedly fixed to the outer tank upper part are provided.4. The heat insulating vessel of claim ...

PUMPING DEVICE, PLANT AND METHOD FOR SUPPLYING LIQUID HYDROGEN

Device for pumping liquid hydrogen including, arranged in series between an inlet for fluid to be compressed and an outlet for compressed fluid, a first compression member with a piston forming a first compression stage and a second compression member with a piston forming a second compression stage. The first compression member compresses the liquid hydrogen to a supercritical state. The second compression member compresses the supercritical hydrogen from the first compression member to an increased pressure, in particular, between 200 and 1000 bar. 116-. (canceled)17. A device for pumping liquid hydrogen comprising and arranged in series:an inlet for fluid to be compressed;a first compression component, forming a first compression stage. comprising at least one assembly that comprises a piston that is translationally movable in a sleeve;a second compression component, forming a second compression stage. comprising at least one assembly that comprises a piston that is translationally movable in a sleeve; and{'claim-text': ['the first compression component is suitable for and configured for compressing the liquid hydrogen into a supercritical state,', 'the second compression component is suitable for and configured for compressing the supercritical hydrogen supplied by the first compression component at a pressure ranging between 200 and 1000 bar,', 'each piston of the at least one assembly of the first compression component is translationally movable in its respective sleeve at a determined movement speed,', 'each piston of the at least one assembly of the second compression component is translationally movable in its respective speed at a determined movement speed,', 'the translational movement of each piston of the at least one assembly of the first compression component alternates with the translational movement of each piston of the at least one assembly of the second compression component,', 'the determined movement speed of each piston of the at least one ...

Safety Hydraulic Dump for a Cryogenic Pump

A cryogenic fluid pump includes a drive assembly and a pumping assembly. The drive assembly includes a cylinder. The cylinder includes an annular dump channel formed in and extending about an interior wall of the cylinder. A piston is reciprocatable within the cylinder between a first and second position. A hydraulic pressure chamber is defined by the cylinder and the piston. The piston includes an axial spill passage in communication with the pressure chamber and a transverse spill passage in communication with the axial spill passage. The transverse spill passage includes a piston dump port which is sealed to the cylinder in the first position and in the second position unsealed to the cylinder to permit fluid exit from the pressure chamber. The second position includes an over travel state and the dump area of the piston dump port when unsealed to the cylinder increases as the piston advances. 1. A cryogenic fluid pump , comprising:a drive assembly and a pumping assembly, the drive assembly including a cylinder, the cylinder including an annular dump channel that is formed in and extends about an interior wall of the cylinder;a piston reciprocatable within the cylinder between a first position and a second position; anda hydraulic pressure chamber defined by the cylinder and the piston;the piston including at least one axial spill passage in communication with the hydraulic pressure chamber and a transverse spill passage in communication with the at least one axial spill passage, the transverse spill passage including a piston dump port, the piston dump port sealed to the cylinder in the first position and in the second position unsealed to the cylinder to permit fluid exit from the hydraulic pressure chamber, wherein the second position includes an over travel state and wherein the dump area of the piston dump port unsealed to the cylinder continues to increase as the piston advances in the over travel state.2. The cryogenic fluid pump of claim 1 , wherein the ...

HIGH PRESSURE FUEL GAS PUMP

There is disclosed a modular, linearly actuated high-pressure pump for use in various applications with high-pressure fuel systems, in particular liquid cryogenic fuels such as Natural Gas, Hydrogen, Nitrogen and Argon (LNG/LH2/LN2/LAR). The pump utilizes linear actuation which smooths out the power profile. There are no dynamic seals which prevents failure from leakage. The primary benefit of a smooth, no pulse output and lack of dynamic seals is a longer life of the pump. Marine fuel systems that utilize cryogenic LNG are a primary application. 1. A system for pumping of high-pressure cryogenic fuel from a fuel source to provide a smooth , pulse-free output , comprising:a plurality of linear pumps each including in series an upper power end and a lower fluid end, the power end having a linear-actuated drive system terminating in a drive shaft that linearly reciprocates along an axis;the power end drive system of each pump being independently controllable via software contained within a multi-axis electronic controller, and each linear-actuated drive system being operable at a low turndown ratio to an output speed of about 1 cycle per minute;an absence of packing seals in the lower fluid end to reduce wear and extend operating life;the fluid end having a piston coupled to the drive shaft of the power end so as to linearly reciprocate within a fluid cylinder, the piston having a head with a plurality of piston rings distributed thereon that provide sealed sliding contact with an inner lumen of the fluid cylinder;an inlet tank for receiving and storing a high-pressure cryogenic fuel from the fuel source;an inlet passageway leading from the inlet tank to a lower end of each fluid cylinder and into valved communication with a head space just below the head of the piston therein, wherein upward motion of the piston creates a negative pressure gradient in the head space sufficient to allow high-pressure fuel into the head space, and downward motion of the piston expels ...

Hydraulic Drive System for Cryogenic Pump

A drive system for a cryogenic pump is provided including a spool housing having a plurality of valves disposed therein about a pump axis and a tappet housing including a plurality of tappet bores, each tappet bore in communication with a respective one of the plurality of valves. A collection cavity collects hydraulic fluid from the tappet bores. A pump flange includes a fluid inlet and a fluid outlet. An inlet manifold directs hydraulic fluid received through the fluid inlet to each of the plurality of valves. An outlet manifold directs hydraulic fluid from each of the valves and the collection cavity to the fluid outlet. 1. A cryogenic pump for pumping liquid from a cryogenic tank comprising:a pump assembly adapted to be submersed within a cryogenic tank; anda hydraulic drive assembly for driving the pump assembly to pump liquid; a spool housing having a plurality of valves disposed therein about a pump axis;', 'a tappet housing including a plurality of tappet bores, each tappet bore in communication with a respective one of the plurality of valves;', 'a collection cavity for collecting hydraulic fluid from the tappet bores;', 'a pump flange for mounting the cryogenic pump to a cryogenic tank, the pump flange including a fluid inlet for receiving hydraulic fluid and a fluid outlet for directing hydraulic fluid out of the cryogenic pump;', 'an inlet manifold disposed at least partially in the spool housing for directing hydraulic fluid received through the fluid inlet to each of the plurality of valves; and', 'an outlet manifold disposed at least partially in the spool housing for directing hydraulic fluid from each of the valves and the collection cavity to the fluid outlet., 'wherein the hydraulic drive assembly further includes2. The cryogenic pump of further including a center passage disposed at least partially in a space in the spool housing that is circumscribed by the plurality of valves and an annular passage disposed at least partially in the spool ...

CARGO STRIPPING FEATURES FOR DUAL-PURPOSE CRYOGENIC TANKS ON SHIPS OR FLOATING STORAGE UNITS FOR LNG AND LIQUID NITROGEN

An apparatus and method of storing and transporting, in a dual-use cryogenic storage tank, a cryogenic liquid having a liquefaction temperature. A first pump empties the tank of a first portion of the cryogenic liquid, thereby leaving a second portion of the cryogenic liquid in the cryogenic storage tank. A second portion of the cryogenic liquid is focused at a location on a bottom of the cryogenic storage tank. Using a second pump located at the location, the cryogenic storage tank is emptied of the second portion of the cryogenic liquid, whereby a residual portion of the cryogenic liquid is left therein. Using a focused heating structure, heat may be delivered to the location to raise the temperature of the residual portion above the liquefaction temperature, thereby vaporizing all of the residual portion. 1. A carrier for storing and transporting cryogenic liquids , comprising:a tank configured to store and transport a cryogenic liquid having a liquefaction temperature; fill the tank with the cryogenic liquid, and', 'empty the tank of a first portion of the cryogenic liquid, thereby leaving a second portion of the cryogenic liquid in the tank;, 'a first pump configured to'}a tank structure that focuses the second portion of the cryogenic liquid at a location on a bottom of the tank; anda second pump located at the location and configured to empty the tank of the second portion of the cryogenic liquid, whereby a residual portion of the cryogenic liquid is left therein.2. The carrier of claim 1 , wherein the tank structure comprises baffles surrounding the second pump claim 1 , the baffles being attached to the bottom of the tank.3. The carrier of claim 2 , further comprising a baffle top that encloses the second pump within the baffles claim 2 , the baffle top claim 2 , and the bottom of the tank.4. The carrier of claim 1 , wherein the tank structure comprises a pump well at the bottom of the tank claim 1 , the pump well comprising an indented portion of the ...

CRYOGEN PUMP

A cryogen pump, including: a pump section that includes: a bellow with an inlet opening at a first end and an exit opening, the inlet opening in direct fluid communication with a volume of a cryogen, the exit opening at least in fluid communication with a second end of the bellow opposing the first end, a pair of plugs configured to sealingly close the opposing ends of the bellow, the pair of plugs cooperating so that when one plug sealingly closes one of the ends, the other end of the bellow is open; and a drive section configured to drive the pump section in a reciprocating manner so as to move the plugs. 1. A cryogen pump , comprising:a pump section that includes:a bellow with an inlet opening at a first end and an exit opening, the inlet opening in direct fluid communication with a volume of a cryogen, the exit opening at least in fluid communication with a second end of the bellow opposing the first end,a pair of plugs configured to sealingly close the opposing ends of the bellow, the pair of plugs cooperating so that when one plug sealingly closes one of the ends, the other end of the bellow is open; anda drive section configured to drive the pump section in a reciprocating manner so as to move the plugs.2. The pump of claim 1 , further comprising a container configured to retain the volume of a cryogen claim 1 , wherein the bellow is submerged in the cryogen when the volume of cryogen is retained such that the inlet opening is disposed in the cryogen claim 1 , and wherein claim 1 , when the inlet opening is in an open condition claim 1 , cryogen flows into the bellow.3. The pump of claim 1 , wherein the bellow is a first bellow claim 1 , and wherein the pump section includes a second bellow surrounding the first bellow and spaced from the first bellow by a vacuum space that insulates the first bellow.4. The pump of claim 1 , wherein the drive section translates rotational motion into reciprocating claim 1 , linear motion that is communicated to the plugs.5. ...

PUMP WITH WEAR-RESISTANT BARREL AND PLUNGER HAVING COATING SUPPORT

A pumping mechanism is disclosed. The pumping mechanism may include a barrel formed of a barrel substrate and including a first end surface, a second end surface opposite the first end surface, and a bore between the first and second end surfaces. Each of the first and second end surfaces and the bore is coated with a metal plating. The pumping mechanism may further include a plunger formed of a plunger substrate and configured to be slidably disposed in the bore in barrel, the plunger substrate having a tribological coating. 1. A pumping mechanism comprising: a first end surface;', 'a second end surface opposite the first end surface; and', 'a bore between the first and second end surfaces;', 'wherein each of the first and second end surfaces and the bore is coated with a metal plating; and, 'a barrel formed of a barrel substrate and includinga plunger formed of a plunger substrate and configured to be slidably disposed in the bore in barrel, the plunger substrate having a tribological coating.2. The pumping mechanism of claim 1 , wherein the head is coated with the metal plating.3. The pumping mechanism of claim 1 , wherein the metal plating includes nickel.4. The pumping mechanism of claim 4 , wherein the metal plating is electroless nickel plating.5. The pumping mechanism of claim 5 , wherein the electroless nickel plating has a Rockwell C hardness of at least 60 HRC.6. The pumping mechanism of claim 1 , wherein the barrel substrate and the head substrate each include stainless steel.7. The pumping mechanism of claim 1 , wherein the pumping mechanism is connected to a source of cryogenic.8. The pumping mechanism of claim 1 , wherein the plunger substrate is nitride hardened to a depth of between 20 and 150 microns below an outer surface of the plunger.9. The pumping mechanism of claim 8 , wherein the plunger substrate has a Rockwell C hardness of at least 60 HRC to a depth of between 20 and 150 microns below an outer surface of the plunger.10. The pumping ...

MACHINE SYSTEM HAVING SUBMERSIBLE PUMPING SYSTEM, AND METHOD

A submersible pumping system in a machine system includes a pumping element, and a drive mechanism for actuating the pumping element. The drive mechanism has an electromagnetic element with a superconducting state at or below a critical temperature. A temperature control jacket and cooling mechanism are provided to pump heat from a heat exchange cavity to cool the drive mechanism to or below a critical temperature less than an ambient temperature in a cryogenic environment. 1. A machine system comprising:a machine;a fluid storage vessel;an outlet conduit coupled with the fluid storage vessel and structured to convey a fluid stored within the fluid storage vessel to the machine;a pumping system positioned within the fluid storage vessel so as to be submerged within the stored fluid, the pumping system including a housing having formed therein a pumping chamber, and a pumping element movable within the pumping chamber to transition the stored fluid from the fluid storage vessel to the outlet conduit;the pumping system further including a drive mechanism for actuating the pumping element, the drive mechanism including an electromagnetic element having an electrical conducting state above a critical temperature and an electrical superconducting state at or below the critical temperature;the drive mechanism further including a temperature control jacket forming a heat exchange cavity about the electromagnetic element, and a cooler coupled with the temperature control jacket and structured to pump heat from the heat exchange cavity to maintain the electromagnetic element at or below the critical temperature.2. The system of wherein cooling fluid is resident within the heat exchange cavity.3. The system of wherein the cooling fluid includes liquid nitrogen claim 2 , and wherein the stored fluid is resident within a fluid storage volume of the fluid storage vessel and includes a cryogenic fluid other than liquid nitrogen.4. The system of further comprising a pressure relief ...

DAMPING ASSEMBLY

A damping assembly for a valve is provided. The valve is configured to move between an open position and a close position. The valve includes a valve element and a valve stem disposed within a head. The damping assembly includes a damping chamber defined within the head. The damping assembly defines a sidewall. The damping assembly also includes a collar configured to receive the valve stem. The collar includes a collar stem. The collar also includes a collar head having an outer diameter. The collar head includes a side surface. The damping assembly includes a liquid passageway. The liquid passageway is being defined by a radial clearance between the side surface of the collar head and the sidewall of the damping chamber. The liquid passageway is configured to control a flow of a liquid as the valve moves between the open position and the closed position. 1. A damping assembly for a valve , the valve configured to move between an open position and a closed position , wherein the valve includes a valve element and a valve stem disposed within a head , the damping assembly comprising:a damping chamber defined within the head, wherein the damping chamber defines a sidewall; a collar stem; and', 'a collar head having an outer diameter, wherein the collar head includes a side surface; and, 'a collar configured to receive the valve stem, wherein the collar is disposed within the damping chamber, and wherein the collar includesa liquid passageway being defined by a radial clearance between the side surface of the collar head and the sidewall of the damping chamber, wherein the liquid passageway is configured to control a flow of a liquid as the valve moves between the open position and the closed position.2. The damping assembly of claim 1 , wherein a damping of the valve depends on at least one of the radial clearance claim 1 , a leak length claim 1 , a diameter of the damping chamber claim 1 , and an initial volume of the damping chamber.3. The damping assembly of claim ...

APPARATUS AND METHOD FOR FILTERING CRYOGENIC FLUID

An improved filter apparatus for a cryogenic fluid includes a filter and a support. The filter includes a mesh having an internal space and an open end. The support is associated with the mesh for maintaining a volume of the internal space above a predetermined value. In operation cryogenic fluid enters the internal space through the mesh and exits the open end thereof. 1. A filter apparatus for a cryogenic fluid comprising:a filter comprising an internal space and an open end; anda support associated with the filter maintaining a volume of the internal space above a predetermined value;wherein cryogenic fluid enters the internal space through the filter and exits the open end thereof.2. The filter apparatus of claim 1 , wherein the filter is formed in the shape of an elongated bag or sock.3. The filter apparatus of claim 1 , wherein the support comprises one of:a coil spring arranged in the internal space of the filter;a tent-type structure comprising a frame with flexible rods;a cage spanning at least a portion of the outer and inner surfaces of the filter;an outer filter on an outer surface of the filter and an inner filter on an inner surface of the filter;an outer cage comprising a first section and a second section, the first section comprising annular ribs and longitudinal ribs, the second section comprising longitudinal ribs extending from the first section and wrapping around an end of the filter;an overmold injection molded onto the filter comprising a first portion and a second portion, a flexible knee connecting the first portion to the second portion; anda first cylindrical section and a second cylindrical section connected by a flexible knee, the first and second cylindrical sections including perforations.4. The filter apparatus of claim 1 , wherein the support comprises an outer cage comprising a first section and a second section claim 1 , the first section comprising annular ribs and longitudinal ribs claim 1 , the second section comprising ...

Fuel Supply Device and Fuel Supply Method

A fuel supply device includes: a linear actuator; a reciprocating pump having a boosting piston driven by the linear actuator and configured to reciprocate in an axial direction, the reciprocating pump being configured to suck the fuel when the boosting piston moves in a first direction and configured to boost and eject the fuel when the boosting piston moves in a second direction; and a controller configured to control driving of the linear actuator so as to adjust an amount of the fuel ejected from a boosting cylinder per reciprocating time by adjusting a ratio of a fuel ejection time and a fuel suction time of the reciprocating pump without changing the reciprocating time of the boosting piston in accordance with a load of the internal combustion engine. The adjustment adjusts a stroke length of the boosting piston and a moving speed of the boosting piston in the second direction.

Drive Assembly and Pump Assembly Arrangement for Cryogenic Pump

A cryogenic pump for pumping cryogenic fluid is provided. The pump includes a pump assembly adapted for exposure to cryogenic fluid that includes a plurality of pumping elements disposed about a pump axis. A drive assembly drives the pumping elements to pump cryogenic fluid. A plurality of actuating elements are arranged circumferentially about the pump axis, each actuating element operatively interconnecting the drive assembly with a respective one of the pumping elements. Each actuating element includes a first portion disposed a first radial distance from the pump axis and a second portion disposed a second radial distance from the pump axis with the first radial distance being less than the second radial distance at ambient temperature. 1. A cryogenic pump for pumping cryogenic fluid comprising:a pump assembly adapted for exposure to cryogenic fluid, the pump assembly including a plurality of pumping elements disposed about a pump axis;a drive assembly for driving the pumping elements to pump cryogenic fluid; anda plurality of actuating elements arranged circumferentially about the pump axis, each actuating element operatively interconnecting the drive assembly with a respective one of the pumping elements;wherein each actuating element includes a first portion arranged relatively closer to the drive assembly than a second portion and a second portion arranged relatively closer to the pump assembly than the first portion, the first portion of the actuating element being disposed a first radial distance from the pump axis and the second portion of the actuating element being disposed a second radial distance from the pump axis with the first radial distance being less than the second radial distance at ambient temperature.2. The cryogenic pump of wherein each actuating element includes a tappet and a pushrod.3. The cryogenic pump of wherein the first portion of the actuating element includes at least a portion of the tappet and the second portion of the actuating ...

FLUID ENERGY MACHINE

A fluid energy machine, comprising a crank drive (A) and a drive device which is mechanically connected to the crank drive, wherein the drive device has two electric motors, the respective output members of which are mechanically connected to the crank drive is disclosed. The fluid energy machine is arranged within a housing which seals the fluid energy machine with respect to the surroundings and which is connected to a pressure-holding system. A method for operating a fluid energy machine of this type is further disclosed. 1. A fluid energy machine comprising a crank drive and a drive device that is mechanically connected to the crank drive , wherein the drive device comprises two electric motors , the respective output members of which are mechanically connected to the crank drive , characterized in that the fluid energy machine is arranged within a housing , which seals the fluid energy machine relative to the environment and is connected to a pressure retention system.2. The fluid energy machine according to claim 1 , characterized in that the housing is divided into multiple compartments claim 1 , wherein the compartments are connected to one another.3. The fluid energy machine according to claim 1 , characterized in that the housing is connected to the pressure retention system by means of an inlet and an outlet.4. The fluid energy machine according to claim 1 , characterized in that that an excess pressure between 0.01 and 50 mbar.5. A method for operating a fluid energy machine comprising a crank drive and a drive device that is mechanically connected to the crank drive claim 1 , wherein the drive device comprises two electric motors claim 1 , the respective output members of which are mechanically connected to the crank drive claim 1 , characterized in that the fluid energy machine is arranged within a housing claim 1 , through which a pressurized medium flows.6. The method according to claim 5 , characterized in that an inert gas selected from the group ...

Cryogenic Pump with Insulating Arrangement

A cryogenic pump configured for pressurizing a cryogenic fluid is provided. The cryogenic pump includes a warm end portion adapted to not contact cryogenic fluid during operation of the pump and including one or more driving components. The cryogenic pump includes a cold end portion adapted to contact cryogenic fluid during operation of the pump and including a pump inlet and a pump outlet. An insulating arrangement including an insulator plate is arranged between the warm end portion and the cold end portion and defines a first air gap between the cold end portion and the insulator plate.

CRYOGENIC VIBRATION SENSOR AND INSULATOR PAD ASSEMBLY, AND CRYOGENIC PUMPS INCLUDING THE SAME

A cryogenic-rated vibration sensor generally includes a cryogenic-rated accelerometer mounted to a top planar surface of an insulation block, wherein the insulation block includes a threaded opening on a bottom planar surface thereof for attachment to an object. Also disclosed are cryogenic pumps including the cryogenic-rated vibration sensor. 1. A cryogenic-rated vibration sensor comprising:a cryogenic-rated accelerometer mounted to a top planar surface of an insulation block and free from direct contact with a pump component, wherein the insulation block is configured to be adhesively coupled to a pump component such that the cryogenic-rated accelerometer is free from direct contact with a pump component or includes a threaded opening on a bottom planar surface thereof to receive studs from the cryogenic accelerometer and/or the pump component.2. The cryogenic-rated vibration sensor of claim 1 , wherein the insulation block is a polytetrafluoroethylene material.3. The cryogenic-rated vibration sensor of claim 1 , wherein the insulation block is a thermoset reinforced plastic comprising a reinforcing substrate and a thermoset resin binder.4. The cryogenic-rated vibration sensor of claim 3 , wherein the reinforcing substrate is selected from the group consisting of woven glass cloth claim 3 , random glass mat claim 3 , glass filaments claim 3 , woven canvas cotton fabric claim 3 , woven linen cotton fabric claim 3 , paper claim 3 , woven aramid fabric claim 3 , random mat aramid claim 3 , woven graphite fabric claim 3 , and random mat graphite and the thermoset resin binder is selected from epoxies claim 3 , melamines claim 3 , phenolics claim 3 , polyesters claim 3 , and silicones.5. The cryogenic-rated vibration sensor of claim 1 , wherein the insulation block is a glass-cloth reinforced epoxy.6. The cryogenic-rated vibration sensor of claim 1 , wherein the cryogenic-rated accelerometer is a quartz shear-piezoelectric transducer.710. The cryogenic-rated vibration ...

CRYOGENIC PUMP

A cryogenic pump includes a pressurization assembly configured to be submerged in a cryogenic liquid; a hydraulic actuation assembly; and a transmission assembly in communication between the pressurization assembly and the hydraulic actuation assembly. The transmission assembly including a conduit having a first end adjacent the hydraulic actuation assembly and a second end adjacent the pressurization assembly. The conduit is configured to contain a material having a first state at the first end and a different second state at the second end. 1. A drive assembly for a cryogenic pump having at least one pumping element , the pumping element including a pressurization assembly configured to be submerged in a cryogenic liquid , the pressurization assembly including a barrel disposed within a casing , and a plunger disposed within a bore of the barrel , the barrel having an inlet and a discharge , the plunger having a plunger body and one or more circumferential grooves disposed about the plunger body , the plunger being configured for reciprocating movement within the barrel so that when the plunger is moving in a first retracting direction cryogenic liquid is drawn into the bore and when the plunger is moving in a second extending direction cryogenic liquid is delivered from the discharge at a predetermined pressure , the drive assembly comprising:a hydraulic actuation assembly; anda transmission assembly in communication between the pressurization assembly and the hydraulic actuation assembly, the transmission assembly including a conduit passage having a first end adjacent the hydraulic actuation assembly and a second end adjacent the pressurization assembly, the conduit passage configured to contain a material having a first state at the first end and a different second state at the second end, wherein the first state of the material contained in the conduit passage is a liquid state and the second state of the material contained in the conduit passage is a solid ...

Cryogenic pump

A cryogenic pump includes a drive assembly and a pressurization assembly operatively coupled to each other. The drive assembly includes a housing having sidewall and piston slidably disposed therein, the sidewall and a first surface of piston defining expansion chamber. A fuel supply valve is provided in fluid communication with supply of liquid cryogenic fuel and configured to selectively provide liquid cryogenic fuel into expansion chamber. A heating element extends at least partially into expansion chamber to heat and facilitate vaporization of liquid cryogenic fuel, thereby increasing pressure within expansion chamber and causing movement of piston in first direction. The pressurization assembly includes barrel defining bore and a plunger slidably disposed therein to define pressurization chamber for receiving liquid cryogenic fuel. The plunger is driven by the piston such that the movement of piston in first direction causes movement of plunger to pressurize cryogenic fuel within pressurization chamber.

Cryogenic Tank Assembly with a Pump Drive Unit Disposed Within Fluid Storage Vessel

A fluid storage and pressurizing assembly includes a storage receptacle and a pump assembly. The storage receptacle includes an inner vessel defining a cryogen space for storing a fluid at a storage pressure and a cryogenic temperature, an outer vessel surrounding the inner vessel, and an insulated space between the inner vessel and the outer vessel, and a pump assembly. The pump assembly includes a pump immersed in the cryogen space having an inlet for receiving a quantity of fluid from the cryogen space, and an outlet for delivering the fluid therefrom. The pump assembly further includes a pump drive unit for driving the immersed pump, the pump drive unit being at least partially disposed within a space defined by the storage receptacle. 1. A fluid storage and pressurizing assembly comprising:a. a storage receptacle having an inner vessel defining a cryogen space for storing fluid at a storage pressure and a cryogenic temperature, an outer vessel surrounding the inner vessel, and an insulated space between the inner vessel and the outer vessel, and i. a pump drive unit at least partially disposed within a space defined by the storage receptacle; and', 'ii. a pump, actuatable by said pump drive unit, immersed in the cryogen space, the pump having an inlet for receiving a quantity of fluid from the cryogen space and an outlet for delivering the fluid therefrom., 'b. a pump assembly further comprising2. The storage and pressurizing assembly of claim 1 , wherein the pump drive unit is fully recessed within the sleeve of the outer vessel.3. The storage and pressurizing assembly of claim 1 , wherein the pump drive unit is substantially surrounded by the cryogen space.4. The fluid storage and pressurizing assembly of claim 1 , wherein the inner vessel comprises a sleeve extending into the cryogen space within which the pump drive unit is at least partially disposed.5. The fluid storage and pressurizing assembly of claim 4 , wherein the pump drive unit is fully recessed ...

LIQUID SUPPLY SYSTEM

A liquid supply system includes first and second bellows and arranged in series in an expanding/contracting direction thereof in a vessel and having first end portions respectively, which are close to each other and fixed to an inner wall of the vessel , and also having second end portions respectively, which are distant from each other and movable in the expanding/contracting direction. An inner space of the vessel located outside the first bellows serves as a first pump chamber P An inner space of the vessel located outside the second bellows serves as a second pump chamber P An inner space of the vessel located inside the first and second bellows and serves as a sealed space R A shaft to which the respective second end portions of the first and second bellows and are fixed is reciprocally moved to expand/contract the first and second bellows and 1. A liquid supply system , comprising:a vessel configured to suck in a liquid from a first path communicating with the outside of a system and transmit the liquid that has been sucked in to a second path communicating with the outside of the system;first and second bellows arranged in series in an expanding/contracting direction thereof in the vessel and having first end portions respectively, which are close to each other and fixed to an inner wall of the vessel, and also having second end portions respectively, which are distant from each other and movable in the expanding/contracting direction; anda shaft which is inserted into the vessel and to which the respective second end portions of the first and second bellows are fixed, the shaft being reciprocally moved in the expanding/contracting direction by a drive source to expand/contract the first and second bellows, whereinan inner space of the vessel located outside the first bellows serves as a first pump chamber provided with a first inlet port through which the liquid is sucked from the first path into the first pump chamber and a first outlet port through which ...

Pump Column Baffle for LNG Pump

Disclosed is a pump column for use with a submersible pump in an croygenic tank, such as for use in a rail tender fueled by liquid natural gas. The pump column is configured to enable rapid removal and access to a pump submerged within a tank containing liquid natural gas. 1. A device for accessing a pump inside a cryogenic fluid tank , comprising:an elongated, vertical column structure defining an internal volume;a pump contained in a lower region of the column structure;at least one seal that provides a seal between the internal volume and a region exterior to the internal volume;a lift mechanism that actuates to raise the pump; andan actuator attached to the lift mechanism, the actuator adapted to raise the pump upon actuation.2. A device as in claim 1 , wherein the actuator is a jack screw.3. A device as in claim 1 , wherein the jack screw threadedly extends through a top plate on the column.4. A device as in claim 1 , wherein the lift mechanism comprises a jack rod that attaches the actuator to the pump.5. A device as in claim 1 , further comprising a foot plate that supports the pump at the lower region of the column structure.6. A device as in claim 5 , further comprising a seal that seals the foot plate from an exterior region outside the pump.7. A device as in claim 1 , further comprising a discharge conduit that fluidly couples the internal volume of the pump to an exterior region.8. A device as in claim 1 , wherein the vertical column includes a bellows that can change shape.9. A device as in claim 1 , wherein the column is cylindrical.10. A device as in claim 1 , further comprising the tank.11. A device as in claim 10 , wherein the tank includes an inner tank and an outer tank.12. A device as in claim 11 , wherein an upper region of the column structure extends out of the inner tank to the outer tank and wherein a bottom region of the column is inside the inner tank. This application claims priority to co-pending U.S. Provisional Patent Application Ser. ...

SYSTEMS AND METHODS FOR POWER TRANSFER IN CRYOGENIC FUEL APPLICATIONS

A fuel power transfer system for an engine may include a cryogenic fuel supply, a fuel pump in fluid communication with the cryogenic fuel supply, a multi-position valve in fluid communication with the fuel pump and a combustion chamber of the engine, a fuel turbine operatively coupled to the fuel pump and having a primary discharge port in fluid communication with the combustion chamber, a primary heat exchanger in fluid communication between the multi-position valve and the fuel turbine, and a gearbox operatively coupled to the fuel turbine and the fuel pump and configured to transfer power from the fuel turbine to the engine. 1. A fuel power transfer system for an engine , comprising:a cryogenic fuel supply;a fuel pump in fluid communication with the cryogenic fuel supply;a multi-position valve in fluid communication with the fuel pump and a combustion chamber of the engine;a fuel turbine operatively coupled to the fuel pump and having a first discharge port in fluid communication with the combustion chamber;a primary heat exchanger in fluid communication between the multi-position valve and the fuel turbine; anda gearbox operatively coupled to the fuel turbine and the fuel pump and configured to transfer power from the fuel turbine to the engine.2. The system of claim 1 , further comprising a motor-generator operatively coupled to the gearbox and selectively configurable to operate as a motor or a generator.3. The system of claim 1 , further comprising an auxiliary heat exchanger in fluid communication between the multi-position valve and the combustion chamber.4. The system of claim 1 , wherein the fuel pump and the fuel turbine are operatively coupled via a common shaft.5. The system of claim 2 , whereinthe motor-generator is coupled to the gearbox via an accessory clutch, andthe gearbox is configured to transfer power from the fuel turbine to the engine via a power transfer clutch.6. The system of claim 5 , further comprising:a controller;a sensor in ...

SEALED AND THERMALLY INSULATED TANK HAVING A SECONDARY SEALING MEMBRANE EQUIPPED WITH A CORNER ARRANGEMENT WITH CORRUGATED METAL SHEETS

A sealed and thermally insulated tank for storage of a fluid, having a plurality of multilayer walls. A first of the walls has a secondary thermally insulating barrier including a first insulating panel along the intersection between the load-bearing structure of first wall and the load-bearing structure of an adjacent second wall. A second insulating panel is juxtaposed with the first insulating panel along one edge of the first panel opposing the second wall. The first wall has a secondary sealing membrane including a first corrugated metal sheet welded to a small metal plate of the first insulating panel; and a second corrugated metal sheet welded to the small metal plate of the second insulating panel. The first metal sheet and the second metal sheet are welded together via a joggled edge permitting the first and the second metal sheets to be lap welded to one another. 1424313415475. A sealed and thermally insulated tank intended for the storage of a fluid , said tank having a plurality of walls ( , ) exhibiting a multilayer structure successively having , in the direction of the thickness from the outside to the inside of the tank , a secondary thermally insulating barrier () retained against a load-bearing structure () , a secondary sealing membrane () borne by the secondary thermally insulating barrier () , a primary thermally insulating barrier () bearing against the secondary sealing membrane () and a primary sealing membrane () borne by the primary thermally insulating barrier () and designed to be in contact with the fluid contained in the tank;{'b': 42', '43', '1, 'claim-text': [{'b': 44', '45', '3', '42', '3', '43, 'a first insulating panel () arranged along the intersection () between the load-bearing structure () of said first wall () and the load-bearing structure () of an adjacent second wall (); and'}, {'b': 50', '44', '48', '44', '43, 'a second insulating panel () juxtaposed with the first insulating panel () along one edge () of said first ...

Cryogenic Cooling Pump and Method

A pump () for circulating a cryogenic coolant, comprising: a cylinder housing (); a piston () received in said cylinder housing () for reciprocating in said cylinder housing () between a first death center position () and a second death center position (), said first death center position () and said second death center position () defining a compression chamber () therebetween; an outlet () for said compression chamber (); and an inlet () formed in a wall () of said cylinder housing () at a position between said first death center position () and said second death center position (); wherein said inlet () is adapted to establish a fluid connection between said compression chamber () and a coolant reservoir (). 1. A pump for circulating a cryogenic coolant , comprising:a cylinder housing;a piston received in said cylinder housing for reciprocating in said cylinder housing between a first death center position and a second death center position, said first death center position and said second death center position defining a compression chamber therebetween;an outlet for said compression chamber; andan inlet formed in a wall of said cylinder housing at a position between said first death center position and said second death center position;wherein said inlet is adapted to establish a fluid connection between said compression chamber and a coolant reservoir.2. The pump according to claim 1 , wherein said inlet is covered by said piston claim 1 , when said piston is at said first death center position claim 1 , and is opened when said piston moves from said first death center position towards said second death center position.3. The pump according to claim 1 , comprising a fluid conduit in fluid communication with said inlet claim 1 , said fluid conduit for establishing said fluid connection between said compression chamber and said coolant reservoir.4. The pump according to claim 1 , comprising a driving unit for reciprocating said piston in said cylinder housing ...

CRYOGENIC PUMP FLANGE

A flange for a pump comprises first and second faces and a passageway for cryogenic fluid flow extending from the first face to the second face and at least one of (1) the passageway is for a pipe and comprises a first portion of a first diameter and a second portion of a second diameter greater than the first diameter, wherein when the pipe has an outer diameter that is smaller than the second diameter a gap is formed between the pipe and the passageway where the pipe passes through the second portion; and (2) a first annular groove in one of the first face and the second face and extending around the passageway, wherein the first annular groove in cooperation with the passageway forms a bellows. The gap and bellows increase the thermal resistance between the passageway and the flange, and the bellows allows for flexure during thermal contractions of the flange reducing thermal stress on welded fluid seals. 1. A flange , comprising:a first face;a second face; (a) a first annular groove in one of said first face or said second face and around said passageway, a first annular portion between said first annular groove and said passageway; or', '(b) a first annular groove in one of said first face or said second face and around said passageway, a first annular portion between said first annular groove and said passageway, a second annular groove extending from the other of the first or second face as said first annular groove and around said first annular groove, a second annular portion between said second annular groove and said first annular groove., 'a passageway for cryogenic fluid flow extending from said first face to said second face, and one of2. The flange of claim 1 , wherein a pipe is in contact with an inner wall of said passageway.3. The flange of claim 1 , wherein a pump for pumping a cryogenic fluid from a storage vessel is coupled to said flange.4. The flange of claim 1 , said passageway comprising a first portion with a first diameter and a second ...

Cryogenic Fluid Pump

A cryogenic fluid pump includes an outlet tube extending along the pump centerline, the outlet tube having an outlet passage that is fluidly in communication with the combined outlet and with a pump outlet opening, and a shroud that extends concentrically along the outlet tube and has an inner diameter that is larger than an outer diameter of the outlet tube such that a gap is formed in a radial direction between an inner surface of the shroud and an outer surface of the outlet tube, the gap extending along at least a portion of the outlet tube. 1. A cryogenic fluid pump , comprising:a plurality of pumping elements, each of the plurality of pumping elements configured to be activated by one of a plurality of pushrods, wherein the plurality of pushrods are arranged in parallel to one another around a pump centerline;an activation portion having a housing that includes a plurality of actuators, each actuator configured to activate one of the plurality of pushrods;a manifold having a plurality of passages, each passage fluidly connected to an outlet of a respective one of the plurality of pumping elements, and a combined outlet, which is fluidly open to the plurality of passages and configured to receive a flow of cryogenic fluid provided from the plurality of pumping elements during operation;an outlet tube extending along the pump centerline, the outlet tube having an outlet passage that is fluidly in communication with the combined outlet and with a pump outlet opening;a shroud extending between the manifold and the activation portion disposed concentrically about the outlet tube, the shroud having an inner diameter that is larger than an outer diameter of the outlet tube such that a gap is formed in a radial direction between an inner surface of the shroud in an outer surface of the outlet tube, the gap extending along at least a portion of the outlet tube that is disposed through the activation portion.2. The cryogenic fluid pump of claim 1 , further comprising an ...

Hydraulic Drive for Cryogenic Fuel Pump

A system for delivering cryogenic fuels to an engine uses a plurality of cryogenic pumps operating in offset phases to deliver high pressure fuel with a minimum of pressure ripple. The cryogenic pumps use engine oil and a hydraulic pump for actuation via electrohydraulic valves. A charge pump maintains pressure in the feed line so that the cryogenic pumps can be located away from the cryogenic fuel tank. A control strategy for the hydraulic pumps allows output pressure and flow rate to be closely controlled and regulated. 1. A system for delivering cryogenic fuel from a cryogenic fuel tank to an engine , the system comprising:a plurality of cryogenic pumps that are hydraulically operated coupled to the cryogenic tank;a plurality of electrohydraulic valves, each of the plurality of electrohydraulic valves coupled to one respective cryogenic pump of the plurality of cryogenic pumps, each of the plurality of electrohydraulic valves configured to selectively supply or drain a hydraulic fluid to its respective cryogenic pump; anda controller coupled to each of the plurality of electrohydraulic valves, the controller configured to activate each of the plurality of electrohydraulic valves in a sequence according to a fuel requirement of the engine.2. The system of claim 1 , further comprising a feed pump that maintains pressure in a feed line that couples the cryogenic fuel tank to each of the plurality of cryogenic pumps.3. The system of claim 1 , further comprising a hydraulic pump that supplies the hydraulic fluid to each of the plurality of electrohydraulic valves.4. The system of claim 3 , wherein each of the plurality of electrohydraulic valves has a drain that channels the hydraulic fluid from its respective one of the plurality of cryogenic pumps to a reservoir for engine lubricating oil.5. The system of claim 3 , wherein the one of the plurality of cryogenic pumps and one of the plurality of electrohydraulic valves are combined into a single electrohydraulic (EH) ...

Pump Drive System with Hydraulic Tappets

A cryogenic pump comprising a shaft disposed in a bearing. The shaft rotates with respect to the bearing housing, and the shaft includes an end with an angled face. The pump includes a drive at one end of the bearing housing. A tappet passage is formed through the drive housing. A pushrod housing connects to the drive housing. The pump includes a piston and a tappet sliding within the tappet passage. The tappet has a base end disposed within the tappet passage and a rod end extending below the tappet end of the drive housing. A fluid cavity is in the tappet passage between the piston and the tappet. The pump includes a pushrod connected to the tappet. The angled face of the shaft rotates and drives the piston toward the drive housing, pushing fluid within the fluid cavity against the tappet, driving the pushrod away from the drive housing. 1. A cryogenic pump comprising:a bearing housing having a shaft end and a drive end;a shaft having an upper end and a lower end disposed in the bearing housing at the shaft end and rotatable with respect to the bearing housing about a longitudinal axis, the lower end of the shaft including an angled face oriented transverse to the longitudinal axis;a drive housing having a piston end and a tappet end, the drive housing disposed at the drive end of the bearing housing, at least one tappet passage being formed through the drive housing substantially along the longitudinal axis between the piston end and the tappet end;a pushrod housing connected to the tappet end of the drive housing;at least one piston slidably disposed at least partially within the at least one tappet passage, a cavity end of the piston disposed within the tappet passage;at least one tappet slidably disposed at least partially within the at least one tappet passage, the at least one tappet having a base end disposed within the tappet passage and a rod end extending below the tappet end of the drive housing, wherein a fluid cavity substantially filled with a fluid ...

Pump having inlet reservoir with vapor-layer standpipe

A pump is disclosed having a manifold with an inlet, a pressure outlet, and a return outlet. The pump may also have a jacket connected to an end of the manifold to create an enclosure that is in fluid communication with the inlet of the manifold, and at least one pumping mechanism extending from the manifold into the jacket. The at least one pumping mechanism may have an inlet open to the enclosure and an outlet in communication with the pressure outlet of the manifold. The pump may further have a standpipe extending from the manifold into the enclosure. The standpipe may be in communication with the return outlet of the manifold.

System and method for priming a pump

A pump includes a reservoir configured to receive a fluid pressurized by a boost pump. The pump also includes at least one pumping mechanism configured to receive a first flow of fluid from the reservoir and direct the first flow of fluid into a discharge passage of the pump without pumping the first flow of fluid when priming the pump. The at least one pumping mechanism is disposed in the reservoir such that the fluid in the reservoir surrounds at least a portion of the at least one pumping mechanism. The discharge passage is configured to output the first flow of fluid from the pump. The pump further includes a bypass passage configured to communicate a second flow of fluid from the reservoir to the storage tank.

LINEAR OSCILLATION SYSTEM HAVING A SUSPENSION SYSTEM AND A METHOD FOR ASSEMBLING THE SAME

A linear oscillation system comprising a housing, a stationary assembly, a moveable assembly and a suspension system is disclosed. The suspension system is mechanically coupled between the moveable assembly and the housing. The suspension system comprises a plurality of planar elastic members and plurality of longitudinal elastic members disposed between the plurality of planar elastic members. A first end of each of the plurality of planar elastic members is mechanically coupled to at least one of the plurality of planar elastic members. A second end of each of the plurality of longitudinal elastic members is mechanically coupled to the housing. 1. A linear oscillation system comprising:a housing;a stationary assembly disposed in the housing;a moveable assembly disposed in the housing, wherein the moveable assembly is configured to undergo a reciprocating motion with respect to the stationary assembly, under the effect of an actuation mechanism; anda suspension system mechanically coupled between the moveable assembly and the housing, wherein the suspension system comprises a plurality of planar elastic members and a plurality of longitudinal elastic members disposed between the plurality of planar elastic members, and wherein a first end of each of the plurality of longitudinal elastic members is mechanically coupled to at least one of the plurality of planar elastic members, and a second end of each of the plurality of longitudinal elastic members is mechanically coupled to the housing.21. The linear oscillation system as defined in clause , wherein the plurality of longitudinal elastic members comprises a first longitudinal elastic member and a second longitudinal elastic member , and wherein the first longitudinal elastic member is configured to elongate and the second longitudinal elastic member is configured to compress when the suspension system is displaced in a first direction , and wherein the first longitudinal elastic member is configured to compress ...

Liquid Natural Gas Cooling On The Fly

Described herein are systems and methods for cryogenic fluid delivery to achieve the lowest reasonable saturation pressure while dispensing a cryogenic fluid such as liquefied natural gas to a holding tank on a use device. The systems and methods utilize a liquid nitrogen component and a liquefaction engine, very cold liquefied natural gas and a liquefaction engine, or a combination of both very cold liquefied natural gas and a liquid nitrogen component to deliver LNG to a holding tank on a use device.

MULTIPLE PUMP SYSTEM

A multiple pump system is disclosed. The multiple pump system may include a fluid tank and a multiple pump vessel connected to the fluid tank. The multiple pump vessel may include at least one first pump and at least one second pump located therein. In addition, the at least one first pump may be configured to dispense a fluid from the fluid tank at a first pressure, and the at least one second pump may be configured to dispense the fluid from the fluid tank at a second pressure. The first pressure may be different from the second pressure, such that the at least one first pump may be configured to dispense liquefied natural gas, and the at least one second pump may be configured to dispense compressed natural gas. 120.-. (canceled)21. A multiple pump system for use with a fluid tank , comprising: an inlet fluidly configured to receive a fluid stored in the fluid tank;', 'an outlet fluidly configured to allow the fluid received from the fluid tank to be dispensed to one or more distribution locations;', 'an insulated vessel configured to store the fluid received from the fluid tank; and', 'at least one first pump and at least one second pump disposed within a space enclosed by the insulated vessel, the space being configured to store the fluid received from the fluid tank,', 'wherein each of the at least one first pump and the at least one second pump is configured to dispense the fluid stored within the space to the one or more distribution locations., 'a multiple pump vessel including22. The multiple pump system of claim 21 , wherein the at least one first pump is configured to dispense the fluid at a first pressure claim 21 , and the at least one second pump is configured to dispense the fluid at a second pressure different from the first pressure.23. The multiple pump system of claim 21 , wherein the at least one first pump is fluidly connected with the one or more distribution locations through at least one first discharge line claim 21 , and wherein the at ...

CRYOGENIC PUMP AND INLET HEADER

A header and a pump end for a cryogenic pump are provided for efficient liquid pumping operation. The header directs supplied liquid into a sump and gas into a freeboard. The liquid in the header can be distributed along the header and decanted over a weir to the sump, the liquid being drawn from the sump and up through the vessel to the pump end. Gas in the freeboard is collected for venting or return to the liquid source. Pump head plunger stroke can be lengthened and operated at slower stroke rates using a large cross-sectional area intake and discharge valves. Plunger seals, supported as a seal pack in a sleeve, are field installable over the plunger. A plunger to drive shim arrangement permits filed adjustment of the stroke. 1. An intake header for a cryogenic pump having one or more pump heads comprising:a generally horizontally extending vessel having a liquid sump and a gas freeboard;a liquid intake to the vessel and connected to a source of cryogenic liquid;a gas outlet connected to the freeboard for venting gas ; andone or more conduits, each conduit forming a suction corresponding to the one or more pump heads, each suction extending from the sump to a respective pump head for delivery of liquid in the sump to the pump head.2. The header of wherein two or more of the one or more suctions are spaced horizontally along the vessel for corresponding to the one or more pump heads3. The header of wherein each suction extends upwardly from the sump claim 1 , through the liquid in the sump claim 1 , through the gas in the freeboard and through an upper wall of the vessel for connection to the pump head.4. The header of further comprising a gas header along the upper wall of the vessel and in fluid communication with the freeboard for collecting gas therefrom.5. The header of wherein the vessel is cylindrical and having a horizontal axis claim 1 , the liquid inlet being located at one end of the vessel at about the axis thereof.6. The header of further comprising ...

Compressing device

Provided is a compressing device including a compressor with a compressing unit compressing a gas and a heat exchanger, the heat exchanger including: a cooling unit that cools a gas compressed by the compressing unit; a connection path that connects the compressing unit to the cooling unit; and a connection path branch portion that is branched from a part of the connection path. The connection path branch portion includes an attachment portion that is provided in a surface different from a surface facing the compressor in the heat exchanger. An instrumentation device is directly and strongly attached to the attachment portion.

VIBRATIONALLY ISOLATED CRYOGENIC SHIELD FOR LOCAL HIGH-QUALITY VACUUM

The disclosure describes various aspects of a vibrationally isolated cryogenic shield for local high-quality vacuum. More specifically, the disclosure describes a cryogenic vacuum system replicated in a small volume in a mostly room temperature ultra-high vacuum (UHV) system by capping the volume with a suspended cryogenic cold finger coated with a high surface area sorption material to produce a localized extreme high vacuum (XHV) or near-XHV region. The system is designed to ensure that all paths from outgassing materials to the control volume, including multiple bounce paths off other warm surfaces, require at least one bounce off of the high surface area sorption material on the cold finger. The outgassing materials can therefore be pumped before reaching the control volume. To minimize vibrations, the cold finger is only loosely, mechanically connected to the rest of the chamber, and the isolated along with the cryogenic system via soft vacuum bellows. 1. A cryogenic device for use in a vacuum chamber , comprising:a suspended cold finger that forms a capping volume that covers or encloses a device under test (DUT), wherein the capping volume formed by the suspended cold finger is configured to have outgassing materials bounce off of the cold finger before reaching a critical volume over the DUT.2. The device of claim 1 , wherein the DUT is a trap.3. The device of claim 1 , wherein the trap is an ion trap.4. The device of claim 1 , wherein the critical volume over the DUT provides a localized region of extreme high vacuum (XHV) or near-XHV over the DUT while other regions in the vacuum chamber provide ultra-high vacuum (UHV).5. The device of claim 1 , wherein the cold finger is loosely mechanically connected to the vacuum chamber.6. The device of claim 1 , wherein the cold finger is isolated along with a cryogenic head via soft vacuum bellows.7. The device of claim 1 , further comprising a shield configured to reduce thermal loading of the cold finger.8. The ...

LIQUID SUPPLY SYSTEM

A liquid supply system that can be cooled efficiently. The liquid supply system includes a container having an inlet and an outlet for liquid and provided with pump chambers P P inside it, supply passages Xc through which the liquid flowing in from the inlet is supplied to the pump chambers P P and a discharge passage through which the liquid discharged from the pump chambers P P is brought to the outlet A thermal resistance layer is provided on a surface of a wall that is in contact with the liquid in the pump chamber P P The thermal resistance layer is made of a material (e.g. PTFE) having a thermal conductivity lower than the material of the wall 1. A liquid supply system comprising:a container having an inlet and an outlet for liquid and provided with a pump chamber inside it;a supply passage through which the liquid flowing in from the inlet is supplied to the pump chamber; anda discharge passage through which the liquid discharged from the pump chamber is brought to the outlet,wherein a thermal resistance layer is formed on a surface of a wall in the liquid supply system that is in contact with the liquid, the thermal resistance layer being made of a material having a lower thermal conductivity than the material of the wall.2. The liquid supply system according to claim 1 , wherein the thermal resistance layer comprises a coating film.3. The liquid supply system according to claim 2 , wherein the coating film comprises a plurality of film members arranged adjacent to one another.4. The liquid supply system according to claim 1 , wherein the thermal resistance layer is provided on an inner surface of the wall of the pump chamber that is in contact with the liquid.5. The liquid supply system according to claim 1 , wherein the thermal resistance layer is provided on an inner surface of the wall of the supply passage and an inner surface of the discharge passage.6. The liquid supply system according claim 1 , wherein the wall on which the thermal resistance layer ...

CRYOGENIC PUMP SYSTEM

A cryogenic pump system for lifting a cryogenic fluid stored in a cryogenic tank includes a first pump assembly and a second pump assembly. The first pump assembly includes a boost pump that is configured to be disposed within the cryogenic tank and pump the cryogenic fluid received from the cryogenic tank. The second pump assembly is configured to receive the cryogenic fluid from the first pump assembly. The second pump assembly includes a housing, a stator, a reciprocating member, and at least one piston. The housing is adapted to store the cryogenic fluid received from the boost pump. The stator is adapted to produce a magnetic field. The reciprocating member is disposed within the housing and is configured to move based on the magnetic field. The piston is configured to be moved by the reciprocating member to direct the cryogenic fluid from the housing out of the cryogenic tank. 1. A cryogenic pump system for lifting a cryogenic fluid stored in a cryogenic tank , the cryogenic pump system comprising:a first pump assembly including a boost pump that is configured to be disposed within the cryogenic tank and pump the cryogenic fluid received from the cryogenic tank; and a housing to store the cryogenic fluid received from the boost pump;', 'a stator to produce a magnetic field; and', 'a reciprocating member disposed within the housing and configured to move based on the magnetic field produced by the stator; and', 'at least one piston configured to be moved by the reciprocating member to direct the cryogenic fluid from the housing out of the cryogenic tank., 'a second pump assembly configured to receive the cryogenic fluid from the first pump assembly, the second pump assembly including2. The cryogenic pump system of claim 1 , wherein the boost pump is driven by a motor claim 1 , the motor being cooled by a discharge of the cryogenic fluid from the boost pump.3. The cryogenic pump system of claim 1 , wherein the first pump assembly is configured to be submerged ...

ELECTRIC FLUID PUMPING SYSTEM

A fluid pumping system may include an engine, an electric generator, an electrically driven pump, and a first electrical resistance heating element. The engine may drive the generator, and the generator may supply power to the electrically driven pump and the electrical resistance heating element. The first electrical resistance heating element may be positioned to apply heat to fluid pumped by the electrically driven pump. 1. An apparatus , comprising:an engine;an electric generator coupled to and driven by the engine;an electrically driven pump coupled to and powered by the electric generator; anda first electrical resistance heating element coupled to and powered by the electric generator,wherein the first electrical resistance heating element is positioned to heat fluid pumped by the electrically driven pump.2. The apparatus of further comprising:a pipe coupled to an output of the electrically driven pump; anda first heat exchanger coupled between the first electrical resistance heating element and at least a portion of the pipe,wherein the electrically driven pump is configured to pump the fluid through the pipe, andwherein the first heat exchanger is configured to transfer heat from the first electrical resistance heating element to the fluid in the pipe to heat the fluid.3. The apparatus of claim 2 , further comprising:a heat recovery unit, wherein the heat recovery unit is configured to transfer heat generated by the engine to the fluid pumped by the electrically driven pump.4. The apparatus of claim 3 , wherein the heat recovery unit comprises at least one of:an engine coolant heat recovery unit;a radiant heat recovery unit;a charge air heat recovery unit;an engine oil heat recovery unit; andan engine exhaust heat recovery unit.5. The apparatus of claim 3 , wherein:the heat recovery unit comprises a second heat exchanger coupled to the pipe,wherein the first heat exchanger is coupled to the pipe closer to the electrically driven pump than the second heat ...

Fuel system having serially arranged in-tank pumps

A pump system is disclosed for use with a fuel system of an engine. The pump system may have a first pump with a first end, a second end, a reservoir located at the second end, and at least one pump mechanism configured to receive fluid from the reservoir. The pump system may also have a second pump mounted to the first pump at the second end and having at least one pump mechanism configured to discharge fluid into the reservoir of the first pump. The pump system may further have a mechanical input operatively connected to the at least one pump mechanism of each of the first and second pumps.

THERMAL PUMP FOR FLUID NEAR A PHASE TRANSITION

Described is an apparatus for providing a fluid at an increased pressure. The apparatus has a range of applications including use with carbon dioxide-based chromatography systems to achieve accurate flow rate control for a carbon dioxide pump. The apparatus includes a thermally-controlled chamber, chamber inlet and outlet check valves, and a temperature controller to control a temperature of fluid inside the chamber. The apparatus also includes a capacitance chamber in fluidic communication with the outlet check valve. A flow of gas passes into the chamber through the inlet check valve when a fluid pressure inside the chamber is less than an inlet fluid pressure and out from the chamber through the outlet check valve when the fluid pressure inside the chamber is greater than an outlet fluid pressure. Thermal control of the chamber allows accurate control of the gas flow into and out from the chamber. 1. A method for providing a fluid at an increased pressure , the method comprising:decreasing a temperature of a chamber so that a pressure of a fluid inside the chamber is less than an inlet fluid pressure to thereby generate a flow of a gas into the chamber;decreasing the temperature of the chamber so that at least a portion of the gas inside the chamber condenses into a liquid;increasing the temperature of the chamber so that the pressure of the fluid inside the chamber increases to greater than the inlet fluid pressure to stop the flow of the gas into the chamber; andincreasing the temperature of the enclosed fluid so that the pressure of the fluid inside the chamber increases to greater than an outlet fluid pressure to thereby generate a flow of fluid from the chamber that is greater than the inlet fluid pressure.2. The method of further comprising controlling the temperature of the chamber so that the pressure of the flow of fluid from the chamber is substantially constant.3. The method of wherein the flow of fluid from the chamber is delivered to a capacitance ...

PISTON COMPRESSOR AND METHOD OF OPERATING THE SAME

The piston compressor comprises a cylinder as well as a piston arranged therein, a carrier housing with a crosshead mounted in the carrier housing, a spacer which connects the cylinder to the carrier housing, as well as a piston rod extending in a longitudinal direction (L) which connects the crosshead to the piston, wherein the spacer comprises a plurality of support arms, wherein the support arms are connected to and support the cylinder. 1. Piston compressor comprising a cylinder and a piston arranged therein , a carrier housing with a crosshead mounted in the carrier housing , a spacer which connects the cylinder to the carrier housing , and a piston rod extending in a longitudinal direction (L) , which connects the crosshead to the piston , the spacer comprising a plurality of support arms extending in the longitudinal direction (L) , wherein the support arms are each individually connected to the cylinder towards the cylinder.2. Piston compressor according to claim 1 , wherein the cylinder has a plurality of attachment points claim 1 , and wherein one support arm is attached to one attachment point in each case.3. Piston compressor according to claim 2 , wherein the attachment points are mutually symmetrically arranged with respect to the longitudinal direction (L).4. Piston compressor according to claim 3 , wherein the cylinder has a plane of symmetry (S) extending in the longitudinal direction (L) along the piston rod claim 3 , and wherein the attachment points and the support arms are arranged symmetrically with respect to the plane of symmetry (S).5. Piston compressor according to claim 1 , wherein the spacer is U-shaped claim 1 , with two support arms extending in the longitudinal direction (L) claim 1 , and the cylinder has two attachment points to which the support arms are fastened.6. Piston compressor according to claim 2 , wherein each attachment point has a width (C) in the circumferential direction of the cylinder in the range between 10° and 30°.7 ...

POSITIVE DISPLACEMENT PUMP HAVING FLOW-PROMOTING SURFACES

The present invention relates to a positive displacement pump having a delivery chamber, which is connected to a discharge connection and a suction connection, characterized in that the surface of the delivery chamber is configured in the form of an at least partially microstructured surface. The at least partially microstructured surface has a multiplicity of ribs and channels located therebetween, these running in a direction along the direction of flow of the delivery medium. As a result of the surface being structured, the situation where gas bubbles stick is reliably prevented and the harmful gas volume is considerably reduced. 1. Positive displacement pump having a delivery chamber , which is connected to a discharge connection and a suction connection , characterized in that the surface of at least one positive-displacement-pump element which is in contact with fluid is configured in the form of an at least partially microstructured surface.2. Positive displacement pump according to claim 1 , characterized in thatthe surface of the delivery chamber, of the working chamber, of lines and/or bores in the pump, of the displacing piston, of the diaphragm, of the valves and/or of all other positive-displacement-pump elements which are in contact with fluid is or are configured in the form of an at least partially microstructured surface.3. Positive displacement pump according to claim 1 , characterized in thatthe surface or the surfaces have or has a multiplicity of ribs and channels located therebetween.4. Positive displacement pump according to claim 1 , characterized in thatribs and channels run at least partially, in particular fully, in a direction along the direction of flow of the delivery medium.5. Positive displacement pump according to claim 1 , characterized in thatthe ribs and channels are arranged at least partially, in particular fully, in segmented form, wherein the individual segments are offset in relation to one another, and wherein it is possible ...

LIQUID SUPPLY SYSTEM

A liquid supply system providing a stable pump operation even when ultra-low temperature liquid including slurry is set as a liquid feed target. The liquid supply system that supplies ultra-low temperature liquid including a slurry component by expansion and contraction of bellows and . At least a region in the bellows and that is in contact with the liquid is coated with resin having a low temperature brittle temperature that is equal to or lower than an operating temperature of the liquid supply system. 1. A liquid supply system that supplies ultra-low temperature liquid including a slurry component by expansion and contraction of a bellows , whereinat least a region in the bellows that is in contact with the liquid is coated with resin having a low temperature brittle temperature that is equal to or lower than an operating temperature of the liquid supply system.2. The liquid supply system according to claim 1 , wherein the ultra-low temperature liquid is liquid nitrogen or liquid helium.3. The liquid supply system according to claim 1 , comprising:a container configured to suck liquid from a first passage communicating with an outside of the system and deliver the sucked liquid to a second passage communicating with the outside of the system;a first bellows and a second bellows disposed in series in an expanding and contracting direction in the container, respective first end portions which are on sides of the first bellows and the second bellows close to each other are respectively fixed to inner walls of the container, and respective second end portions which are on sides of the first bellows and the second bellows far from each other are respectively configured to be movable in the expanding and contracting direction; anda shaft which is inserted through the inside of the container such that the second end portions of the first bellows and the second bellows are respectively fixed to the shaft, and which expands and contracts the first bellows and the second ...

LOW-COST CNG HOME FUEL STATION

A home-based, low-cost, self-contained, fast-fill natural gas refueling station for providing compress natural gas (CNG) fuel for motor vehicles. The station compresses utility supplied natural gas and stores the CNG in a CNG storage facility located inside the station. In preferred embodiments the refueling station is located adjacent to a driveway at a home. The compressor preferably is a multi-stage gas compressor having at least three stages of compression. Applicant estimates that savings based today prices for CNG as compared to gasoline, a typical family with only one car could pay for the station in three years. If the family has several cars the station could pay for itself much earlier. 1. A home-based natural gas refueling station for providing compressed natural gas (CNG) fuel to a CNG storage tank of a CNG powered vehicle of the resident of the home comprising:A) a natural gas fill line connected to a natural gas supply line supplying natural gas to the home;B) a multi-stage compressor connected to the natural gas fill line;C) a filter on the natural gas fill line, a first pressure transducer upstream of the filter, and a second pressure transducer downstream of the filter and upstream, of the multi-stage compressor;D) a first pressure relief valve between the second pressure transducer and the multi-stage compressor;E) a CNG storage facility comprising at least one storage tank having a storage capacity sufficient to fill the storage tank of the CNG vehicle;F) a water trap connected to the CNG storage facility, the water trap including two solenoid valves;G) a CNG exit line directly connected to the storage facility;H) a second pressure relief valve on the CNG exit line downstream of the at least one storage tank;I) a drain valve downstream of the second pressure relief valve;J) at least one pressure regulator downstream of the drain valve;K) a fill nozzle connected to the exit line downstream of the at least one pressure regulator;L) wherein at least ...

HYDRAULIC DRIVE SYSTEM FOR A LINEARLY ACTUATED HYDRAULIC PISTON PUMP

A linearly actuated hydraulic piston pump is provided. The pump includes a piston disposed between a first section and a second section of a piston chamber. The pump also includes a control valve having a valve body defining a valve chamber therein. The control valve also includes an inlet port, a first port, a regeneration port, a second port, and a spool. The spool in a first spool position fluidly couples a pressurized fluid source to the first section via the inlet port and the first port, and fluidly couples an accumulator to the second section via the regeneration port and the second port. The spool in the second spool position fluidly couples the first section to a drain via the first port and a drain port, and fluidly couples the second section to the pressurized fluid source via the inlet port and the second port. 1. A linearly actuated hydraulic piston pump comprising:a pumping chamber including a pumping element disposed therein;a piston chamber including a piston disposed between a first section and a second section of the piston chamber, the piston coupled to the pumping element;a control valve including a valve body, the valve body defining a valve chamber;an inlet port in fluid communication with the valve chamber and a pressurized fluid source;a first port in fluid communication with the valve chamber and the first section of the piston chamber;a regeneration port in fluid communication with an accumulator, the valve chamber and the second section of the piston chamber at a first location;a second port in fluid communication with the valve chamber and the second section of the piston chamber at a second location; anda spool configured to move between a first spool position and a second spool position within the valve chamber;wherein, the spool in the first spool position fluidly couples the pressurized fluid source to the first section of the piston chamber via the inlet port and the first port, and fluidly couples the accumulator to the second ...

Waste heat recovery simple cycle system and method

The power system comprises a working fluid circuit having a high pressure side and a low pressure side and configured to flow a working fluid therethrough. The working fluid circuit further comprises a heater configured to circulate the working fluid in heat exchange relationship with a hot fluid to vaporize the working fluid. The system further comprises serially arranged first expander and second expander fluidly coupled to the working fluid circuit and disposed between the high pressure side and the low pressure side thereof. One of the expanders drives a load and the other expander drives a pump or compressor fluidly coupled to the working fluid circuit between the low pressure side and the high pressure side thereof. A cooler is further arranged and configured to remove heat from the working fluid in the low pressure side of the working fluid circuit.

Natural gas home fast fill refueling station

A home-based, low-cost, self-contained, fast-fill natural gas refueling station for providing compress natural gas (CNG) fuel for motor vehicles. The station compresses utility supplied natural gas and stores the CNG in a CNG storage facility located inside the station. In preferred embodiments the refueling station is located adjacent to a driveway at a home. The compressor preferably is a multi-stage gas compressor having at least three stages of compression. Applicant estimates that savings based today prices for CNG as compared to gasoline, a typical family with only one car could pay for the station in three years. If the family has several cars the station could pay for itself much earlier. 1. A self-contained home-based fast-fill compressed natural gas refueling station , located adjacent to a driveway at a home , for providing compressed natural gas fuel to one or more a vehicle compressed natural gas tanks , comprising:A. a natural gas fill line connected to a natural gas supply source providing natural gas for heating the home or natural gas appliances or heating the home and natural gas appliances,B. a multi-stage gas compressor able to pump gas at a range of at least 0.5 gallons per hour and having at least three stages of compression, connected to said natural gas fill line and adapted to compress natural gas from an initial pressure of about 15 psia to a final pressure of about 4500 psia,C. a compressed natural gas storage facility, said facility comprising one or more compressed natural gas storage tanks providing a total storage volume at 4500 psia of at least 24 GGE's of natural gas but not more than 48 GGEs of natural gas,D. a check valve positioned between the multi-stage compressor and the natural gas storage tank array adapted to prevent backflow of compressed natural gas from the natural gas storage tank array through the multi-stage compressor into the home,E. a pressurized natural gas storage tank exit line connected to said natural gas ...

Low Pressure Fuel Management and Delivery System for a Liquefied Natural Gas Rail Locomotive Tender

A low-pressure fuel management and delivery system 10 for a liquefied natural gas (LNG) rail tender is disclosed. The system provides a rail tender that is inherently safer in operation to known LNG rail tenders through its use of a double-hulled tank design 12, which lacks any penetration of the bottom surface of the first inner tank 16 by any portion of the fuel supply portion of the system 10; the lower pressure storage of the fuel 22 in the first inner tank 16; the inclusion of a gas return line 58 for directing fuel 22 trapped in the LNG flow lines 38, the heat exchanger 46, or the multistage gas compressor 52 to the vapor space 32 of the first inner tank 16 at safe pressures and temperatures; the lack of cryogenic pumps within the first inner tank 16 to drive the fuel supply portion of the system 10; and the location of all the flow controlling valves 40, 42, 50, and 56 in positions that afford them improved physical protection from potential damage due to vehicular collisions or other railroad accidents. During operation, the fuel management and delivery system 10 provides required fuel flow rates and temperatures to an associated locomotive through the use of hydrostatic pressure differences between the LNG fuel 22 and the vapor space 32 within first inner tank 16, as well as a heat exchanger 46 and a multi-stage compressor 52, which are preferably located external of the double-hulled fuel storage tank 12, but on the same rolling stock chassis 14. 1. A liquefied natural gas fuel management system for a railroad locomotive , said system comprising:an insulated rail tank car secured to a rolling stock chassis, said insulated rail tank car suited to retain liquefied natural gas fuel;wherein a fuel delivery system is located within said insulated rail tank car and said rolling stock chassis; andwherein said fuel delivery system operates at gage pressures between 0.1 MPa absolute to 0.27 MPa absolute (0 and 25 psig).2. The system of claim 1 , wherein said ...

Extraction System with Dual-Purpose Pump

Provided is an extraction system which can be used to recover light oils and other organic materials during a supercritical or subcritical fluid extraction. The extraction system utilizes dual-purpose gas-liquid extraction pump for pumping the extracting material (e.g., CO) in either the vapor phase or the liquid phase within the extractor. The extractor is a pressure vessel which functions as an independent, full spectrum extractor. Organic material is inserted within a compartment within the extractor and liquefied and compressed gases are passed through the organic material to obtain the extractant. The extraction system also includes a separator to separate the extracting fluid from the extracted material. 1. An extraction system comprising:a tank containing gas which comprises an inlet for filling the tank with gas and an outlet for allowing the gas to be transferred within the extraction system;a multifunctional dual-purpose gas-liquid extraction pump in connection with the tank wherein the pump is capable of pumping either gas or vapor phase extracting material or liquid phase extracting material throughout the extraction system in a gas phase or a liquid phase extraction process;an extractor pressure vessel in connection with the multifunctional dual-purpose gas-liquid extraction pump, wherein the extractor pressure vessel comprises an entry port, an entry tube, a main body and a collection zone, wherein the main body comprises an extraction chamber, wherein the extraction chamber houses material to be extracted; anda separator pressure vessel in connection with the extractor pressure vessel, wherein the separator pressure vessel comprises an entry port, an entry tube, a separation zone, a collection zone, an exit tube and an exit port, wherein the exit port is connected to the gas-liquid extraction pump and an external condenser by at least one conduit, wherein flow of material from the exit port to either the gas-liquid extraction pump or the external ...

HYDROGEN COMPRESSOR WITH METAL HYDRIDE

The invention relates to a hydrogen compressor () with metal hydride comprising: a pressure chamber (), comprising an inner space, defined by a first inner surface (); a shell () with a thickness E, the shell () comprising a first outer surface () facing the first inner surface (), the shell () comprising an insulating material with first thermal conductivity; and a hydrogen storage element (), contained in the shell (), comprising a storage material suitable for storing or releasing hydrogen as a function of a temperature that is imposed on same, and having a second thermal conductivity higher than the first thermal conductivity. 1. A metal hydride hydrogen compressor comprising:a pressure chamber, comprising an internal volume, delimited by a first internal surface,a casing with a thickness E, the casing comprising a first external surface opposite the first internal surface, the casing comprising an insulating material with a first thermal conductivity, anda hydrogen storage element, contained in the casing, comprising a storage material suitable for storing or releasing hydrogen according to a temperature that is imposed thereon, and having a second thermal conductivity greater than the first thermal conductivity.2. The compressor according to claim 1 , wherein the hydrogen compressor comprises arrangements allowing a circulation of hydrogen between the first internal surface and the first external surface.3. The compressor according to claim 2 , wherein the arrangements comprise an annular space disposed between the first internal surface and the first external surface claim 2 , and/or channels formed on at least one of the first internal surface and the first external surface.4. The compressor according to claim 1 , wherein the casing further comprises means suitable for providing a passage of hydrogen through the thickness E of the casing.5. The compressor according to claim 4 , wherein the casing comprises an open porosity allowing the passage of hydrogen ...

MULTIPLE PUMP SYSTEM

A multiple pump system is disclosed. The multiple pump system may include a fluid tank and a multiple pump vessel connected to the fluid tank. The multiple pump vessel may include at least one first pump and at least one second pump located therein. In addition, the at least one first pump may be configured to dispense a fluid from the fluid tank at a first pressure, and the at least one second pump may be configured to dispense the fluid from the fluid tank at a second pressure. The first pressure may be different from the second pressure, such that the at least one first pump may be configured to dispense liquefied natural gas, and the at least one second pump may be configured to dispense compressed natural gas. 120.-. (canceled)21. A multiple pump system , comprising:a fluid tank;a multiple pump vessel including a space configured to receive fluid from the fluid tank;a first pump enclosed entirely within the space; and 'wherein the first pump and the second pump are both configured to pump the fluid stored within the space to a plurality of distribution locations disposed outside the multiple pump vessel.', 'a second pump enclosed entirely within the space,'}22. The multiple pump system of claim 21 , wherein at least one of the fluid tank or the multiple pump vessel is movable.23. The multiple pump system of claim 21 , wherein at least one of the fluid tank or the multiple pump vessel is insulated.24. The multiple pump system of claim 21 , wherein at least one of the first pump or the second pump is partially submerged in the fluid disposed within the space.25. The multiple pump system of claim 21 , wherein a maximum volume of fluid in the multiple pump vessel is less than a maximum volume of fluid stored in the fluid tank.26. The multiple pump system of claim 21 , further including a vent stack attached to the multiple pump vessel.27. The multiple pump system of claim 21 , wherein the multiple pump vessel includes an opening configured to allow insertion or ...

CRYOGENNIC LIQUEFIED GAS INTAKE/DISCHARGE VALVE BODY, RECIPROCATING PUMP, AND FUEL GAS SUPPLY DEVICE

A fluid intake/discharge valve body for suction of a cryogenic liquefied gas fluid into a cylinder liner and discharge of the gas fluid with a piston, includes: a valve seat body including a fluid supply portion to supply the fluid and a fluid exhaust portion; an intake valve biased against the fluid supply portion; and a discharge valve biased against the fluid exhaust portion. The fluid supply portion includes a supply pathway connected to a supply pipe; a dividing wall including intake holes facing the intake valve; and a counterbore recessed portion on the dividing wall to surround the intake holes. The intake valve abuts an edge of the recessed portion when biased against the fluid supply portion. The discharge valve receives fluid pressure from a side of the discharge hole including a recessed portion disposed in a region wider than an outer periphery of the discharge hole. 1. A fluid intake/discharge valve body that is used for suction of a cryogenic liquefied gas fluid into a cylinder liner and a discharge of a cryogenic liquefied gas fluid with a piston , comprising: a fluid supply portion configured to supply the fluid, and', 'a fluid exhaust portion configured to exhaust the fluid;, 'a valve seat body, includingan intake valve configured to be biased against the fluid supply portion of the valve seat body; anda discharge valve configured to be biased against the fluid exhaust portion of the valve seat body, a supply pathway configured to connect to a supply pipe,', 'a dividing wall including a plurality of intake holes configured to face the intake valve disposed at an end of the supply pathway, and', 'a counterbore that is a recessed portion disposed on the dividing wall, the counterbore surrounding the plurality of intake holes, and the counterbore configured such that the intake valve abuts an edge of the recessed portion in a case where the intake valve is biased against the fluid supply portion., 'the fluid supply portion, including2. The fluid ...

SYSTEM AND METHOD FOR CONTROLLING OPERATION OF LIQUEFIED NATURAL GAS SYSTEM

A method of controlling a liquefied natural gas system is provided. The method includes providing a first pump in association with a tank. The method includes connecting a second pump downstream of the first pump through a supply line. The method further includes providing a valve assembly in a return line provided downstream of the second pump. The method includes connecting an adjustable restrictor in the return line, the adjustable restrictor positioned downstream of the valve assembly. The method further includes cooling the second pump by operating the valve assembly in an open configuration to fluidly connect the adjustable restrictor and the second pump. The method also includes providing a flow of the liquefied natural gas to the second pump for controlling an operating temperature of the second pump. The method includes selectively operating the adjustable restrictor to control a suction pressure associated with the second pump. 1providing the first pump in association with a tank, the tank configured to store a liquefied natural gas;connecting the second pump downstream of the first pump through a supply line;providing a valve assembly in a return line provided downstream of the second pump;connecting a adjustable restrictor in the return line, the adjustable restrictor positioned downstream of the valve assembly; and operating the valve assembly in an open configuration to fluidly connect the adjustable restrictor and the second pump;', 'providing a flow of the liquefied natural gas from the tank via the first pump through the supply line towards the second pump for controlling an operating temperature of the second pump; and', 'selectively operating the adjustable restrictor to control a suction pressure associated with the second pump based, at least in part, on a flow rate of the liquefied natural gas at a static pressure associated with the tank., 'cooling the second pump, wherein the cooling comprises. A method for controlling an operation of a ...

LIQUID SUPPLY SYSTEM

A liquid supply system that enables a reduction in time required for precooling to reduce the time taken to make a pump operable. A container includes a first casing in which fluid passages passing through a first pump chamber P and a second pump chamber P are provided and a second casing that surrounds the outer wall of the first casing . A space (fourth space K) between the first casing and the second casing is configured to allow a cryogenic liquid for precooling to flow through it. 1. A liquid supply system comprising:a container having an inlet and an outlet for cryogenic liquid and provided with a pump chamber inside it;a shaft member that moves vertically upward and downward in the container; anda bellows that expands and contracts with upward and downward motion of the shaft member;wherein the pump chamber is formed by a space surrounding the outer circumference of the bellows, the container includes a first casing in which a fluid passage passing through the pump chamber is provided and a second casing configured in such a way as to surround the outer wall of the first casing, and a space between the first casing and the second casing is configured to allow cryogenic liquid for precooling to flow through it.2. The liquid supply system according to claim 1 , wherein the space between the first casing and the second casing is kept in a vacuum state with the cryogenic liquid having been removed from the space between the first casing and the second casing after precooling.3. The liquid supply system according to claim 1 , wherein a hermetically sealed space other than the passage passing through the pump chamber is provided in the interior of the first casing claim 1 , and the hermetically sealed space and the space between the first casing and the second casing are in communication with each other.4. The liquid supply system according to claim 1 , further comprising a third casing that surrounds the second casing claim 1 , wherein a hermetically sealed space ...

Hydraulic Drive Multi-Element Cryogenic Pump

A cryogenic fluid pump includes a plurality of pumping elements, each of the plurality of pumping elements having an actuator portion that is associated with and configured to selectively activate one end of a pushrod in response to a command by an electronic controller, an activation portion associated with an opposite end of the pushrod, and a pumping portion associated with the activation portion. For each of the plurality of pumping elements, the pumping portion is activated for pumping a fluid by the activation portion, which activation portion is activated by the actuator portion. The electronic controller is configured to selectively activate each of the plurality of pumping elements such that a flow of fluid from the cryogenic fluid pump results from continuous activations of the plurality of pumping elements at selected dwell times between activations of successive pumping elements. 1. A cryogenic fluid pump , comprising: an actuator portion that is associated with and configured to selectively activate one end of a pushrod in response to a command by an electronic controller;', 'an activation portion associated with an opposite end of the pushrod; and', 'a pumping portion associated with the activation portion;, 'a plurality of pumping elements, each of the plurality of pumping elements comprisingwherein, for each of the plurality of pumping elements, the pumping portion is activated for pumping a fluid by the activation portion;wherein the activation portion is activated by the actuator portion; andwherein the electronic controller is configured to selectively activate each of the plurality of pumping elements such that a flow of fluid from the cryogenic fluid pump results from successive activations of the plurality of pumping elements at selected dwell times between activations.2. The cryogenic fluid pump of claim 1 , wherein a plurality of pushrods extends between the actuator portion and the activation portion.3. The cryogenic fluid pump of claim 1 , ...

Method and apparatus for delivering a high pressure gas from a cryogenic storage tank

This invention relates to a cryogenic tank assembly that incorporates a vessel for storing a fluid at cryogenic temperature, a pump and an accumulator such that the accumulator is disposed within the cryogenic space defined by the vessel. The assembly then allows for a quantity of fluid to be received by the pump from the cryogenic space, pressurized to a desire pressure and delivered to an accumulator where it is held such that an excess amount of the pressurized fluid is available to meet needs of the end user that exceed that capacity of the pump to supply such pressurized fluid. A further embodiment of the invention includes a heater disposed downstream of the accumulator to warm the fluid to a gas for use by the end user. The heater may be housed within the cryogen space as well. A further embodiment of the invention allows for the accumulator to be housed within the tank assembly generally such that it may be housed in an insulating space frequently found in cryogenic tanks between an outer jacket and the vessel holding the cryogenic fluid. The invention also relates to a method for delivering a pressurized gas from a cryogenic fluid wherein a quantity of a fluid from within the vessel is pressurized, stored within an accumulator found in the cryogen space, heated, transforming it to a gas, and delivered the gas within a pre-determined pressure range and pre- determined temperature range.

High-pressure fuel feed pump of internal combustion engine

A high-pressure fuel feed pump of an internal combustion engine, wherein an intake valve which is opened and closed automatically by a pressure inside a pressurizing chamber is installed in a fuel intake path, and the intake valve is pushed open by a plunger of an electromagnetic plunger mechanism so as to control the pull-in operation timing of the plunger according to the operating conditions of the internal combustion engine, whereby the intake valve opening time during the compression stroke of a pump is controlled so as to vary the delivery amount of high-pressure fuel.

PUMPING UNIT FOR CRYOGENEOUS MEDIA.

Method and apparatus for delivering a high pressure gas from a cryogenic storage tank

A cryogenic tank assembly has a pump which discharges into an accumulator which is located in the cryogenic storage area. This reduces the space required for the device as well as the functioning of the device. The high pressure fluid in the accumulator remains at a cryogenic temperature. The system may also include a heater to deliver high pressure gas form the liquid storage volume.

Apparatus for storing and pumping a volatile liquid

Method and apparatus for delivering a high pressure gas from a cryogenic storage tank

The present invention is a cryogenic tank assembly that includes a vessel with a cryogen space capable of storing a cryogenic fluid at an initial pressure. The assembly further includes a pump that has an intake opening so that it can receive a quantity of the cryogenic fluid, pressurize it to a pressure above its storage pressure and deliver it to an accumulator within the cryogen space. The accumulator includes a storage volume to hold the pressurized fluid so that it is available depending on the demands of the end user.

System and method for priming a pump

A pump includes a reservoir configured to receive a fluid pressurized by a boost pump. The pump also includes at least one pumping mechanism configured to receive a first flow of fluid from the reservoir and direct the first flow of fluid into a discharge passage of the pump without pumping the first flow of fluid when priming the pump. The at least one pumping mechanism is disposed in the reservoir such that the fluid in the reservoir surrounds at least a portion of the at least one pumping mechanism. The discharge passage is configured to output the first flow of fluid from the pump. The pump further includes a bypass passage configured to communicate a second flow of fluid from the reservoir to the storage tank.

Method and apparatus for delivering a high pressure gas from a cryogenic storage tank

This invention relates to a cryogenic tank assembly that incorporates a vessel for storing a fluid at cryogenic temperature, a pump and an accumulator such that the accumulator is disposed within the cryogenic space defined by the vessel. The assembly then allows for a quantity of fluid to be received by the pump from the cryogenic space, pressurized to a desire pressure and delivered to an accumulator where it is held such that an excess amount of the pressurized fluid is available to meet needs of the end user that exceed that capacity of the pump to supply such pressurized fluid. A further embodiment of the invention includes a heater disposed downstream of the accumulator to warm the fluid to a gas for use by the end user. The heater may be housed within the cryogen space as well. A further embodiment of the invention allows for the accumulator to be housed within the tank assembly generally such that it may be housed in an insulating space frequently found in cryogenic tanks between an outer jacket and the vessel holding the cryogenic fluid. The invention also relates to a method for delivering a pressurized gas from a cryogenic fluid wherein a quantity of a fluid from within the vessel is pressurized, stored within an accumulator found in the cryogen space, heated, transforming it to a gas, and delivered the gas within a pre-determined pressure range and pre- determined temperature range.

Method and apparatus for delivering a high pressure gas from a cryogenic storage tank

Method and apparatus for delivering a high pressure gas from a cryogenic storage tank

Method and apparatus for delivering a high pressure gas from a cryogenic storage tank

Apparatus and method for pumping a cryogenic fluid from a storage vessel and diagnosing cryogenic pump performance

An apparatus and method are provided for pumping a cryogenic fluid from a storage vessel. The cryogenic fluid is pumped from the storage vessel to a heat exchanger and then to a delivery conduit. A pressure sensor measures fluid pressure in the delivery conduit. An electronic controller is programmed to monitor a signal from the pressure sensor, process the signal to determine from the measured process fluid pressure when cryogenic pump performance is degraded, and to send a signal to an operator of the apparatus indicating when the electronic controller determines that cryogenic pump performance has degraded below a predetermined threshold volumetric efficiency.

Pumping unit for delivery of liquid medium from a vessel

A pumping unit for delivering a liquid medium from a low pressure vessel such that the delivered medium has sufficiently high pressure, by providing the liquid medium in the form of separated pulses.

Cryogenic pumps

Cryogenic pump

A cryogenic pump 2 is typically used to supply high pressure natural gas to an engine. The pump 2 has a piston 6 operable to discharge cryogenic liquid from a pumping chamber 8 within a pump housing 4. The cryogenic liquid exits the chamber 8 through an outlet port 10 in which a check valve 12 is positioned. The check valve 12 has a valve member 14 which is loaded by a spring 28 and is retained by a retaining member 16 accessible from outside the housing 4. The check valve 12 has an inlet 18 which is axial with the valve member 14 and an outlet 20 which is transverse to the axis of the valve member 14.

Cryogenic pumps

Una bomba (2) criogénica alternativa que comprende un pistón (42) alternativo dentro de una cámara de bombeo (44); una entrada (16) a la cámara de bombeo (44) para el líquido criogénico que se va a bombear; una salida (32) desde la cámara de bombeo (44) para el líquido criogénico de alta presión; una cámara de recepción (46) de líquido criogénico en una cabeza de la bomba para la recepción de líquido criogénico desde una fuente de la misma, incluyendo la cámara de recepción (46) de líquido criogénico una salida de desgasificación (30) para evacuar el líquido criogénico vaporizado desde la cámara de recepción (46) durante el enfriamiento, caracterizada porque dicha cabeza de la bomba está rodeada al menos parcialmente por una primera camisa (8) que retiene el aislamiento, y la primera camisa (8) está rodeada al menos parcialmente por una segunda camisa (10), definiendo la segunda camisa (10) una cámara para recibir un fluido refrigerante, teniendo la segunda camisa (10) una entrada (20) y una salida (22) para el fluido refrigerante. An alternative cryogenic pump (2) comprising an alternative piston (42) within a pumping chamber (44); an inlet (16) to the pumping chamber (44) for the cryogenic liquid to be pumped; an outlet (32) from the pumping chamber (44) for the high pressure cryogenic liquid; a receiving chamber (46) of cryogenic liquid in a pump head for receiving cryogenic liquid from a source thereof, including the receiving chamber (46) of cryogenic liquid a degassing outlet (30) to evacuate the cryogenic liquid vaporized from the receiving chamber (46) during cooling, characterized in that said pump head is at least partially surrounded by a first jacket (8) that retains the insulation, and the first jacket (8) is at least surrounded partially by a second jacket (10), the second jacket (10) defining a chamber for receiving a cooling fluid, the second jacket (10) having an inlet (20) and an outlet (22) for the cooling fluid.

Cryogenic pump with insulating arrangement

A cryogenic pump configured for pressurizing a cryogenic fluid is provided. The cryogenic pump includes a warm end portion adapted to not contact cryogenic fluid during operation of the pump and including one or more driving components. The cryogenic pump includes a cold end portion adapted to contact cryogenic fluid during operation of the pump and including a pump inlet and a pump outlet. An insulating arrangement including an insulator plate is arranged between the warm end portion and the cold end portion and defines a first air gap between the cold end portion and the insulator plate.

Fuel system having serially arranged in-tank pumps

A pump system is disclosed for use with a fuel system of an engine. The pump system may have a first pump with a first end, a second end, a reservoir located at the second end, and at least one pump mechanism configured to receive fluid from the reservoir. The pump system may also have a second pump mounted to the first pump at the second end and having at least one pump mechanism configured to discharge fluid into the reservoir of the first pump. The pump system may further have a mechanical input operatively connected to the at least one pump mechanism of each of the first and second pumps.

Cryogenic tank assembly with a pump drive unit disposed within fluid storage vessel

A tank assembly including a vessel defining a cryogen space capable of storing fluid at a storage pressure and cryogenic temperature, the vessel having a sleeve extending into the cryogen space and a pump assembly therein. The pump assembly includes a pump, a pump drive unit, and a drive shaft operatively connecting the pump to the pump drive unit. The pump is configured to receive a quantity of the fluid from the cryogen space and deliver it therefrom at a delivery pressure higher than the storage pressure. The pump drive unit is at least partially disposed within the sleeve of the vessel.

Cryogenic pump for liquefied natural gas

A cryogenic pump for pumping liquefied natural gas (LNG) from a cryogenic tank storing LNG includes a drive assembly and a pump assembly disposed along a pump axis. The drive assembly includes a spool housing having a plurality of spool valves arranged around the pump axis, a tappet housing having a plurality of tappet bores with slidable tappets arranged around the pump axis, and spring housing including a plurality of movably disposed pushrods urged upward by a plurality of associated pushrod springs. Hydraulic fluid received by a hydraulic fluid inlet in the drive assembly is directed by the spool valves to the tappet bores to move the tappets downward against the pushrods. To collect the hydraulic fluid, the lowermost spring housing also includes a collection cavity formed therein that can return the hydraulic fluid to a hydraulic fluid outlet.

Feed pump for cryogenic fuels and fuel delivery system

Die Erfindung betrifft eine Förderpumpe (10; 10a) für kryogene Kraftstoffe (1), mit einem Saugeinlass (32), der zumindest mittelbar mit einem Tankbehälter (2; 2a) für den Kraftstoff (1) verbindbar ist, mit einem Druckauslass (33), der vorzugsweise mit einem Verdampfer (15) verbindbar ist, und mit einem von einem Antrieb (65) betätigbaren Verdichterelement (29) zum Verdichten des Kraftstoffs (1) in einem Verdichterraum (25). The invention relates to a feed pump (10; 10a) for cryogenic fuels (1), having a suction inlet (32) which can be connected at least indirectly to a tank container (2; 2a) for the fuel (1), with a pressure outlet (33). which is preferably connectable to an evaporator (15), and to a compressor element (29) actuated by a drive (65) for compressing the fuel (1) in a compressor chamber (25).

Feed pump for cryogenic fuels

Die Erfindung betrifft eine Förderpumpe (10) für kryogene Kraftstoffe (1), mit einem Pumpengehäuse (11), in dem ein Pumpenkolben (25) innerhalb eines Pumpenraums (30) hin- und herbeweglich angeordnet ist, wobei der Pumpenkolben (25) mittels einer Kolbenstange (26) mit einem Antrieb (40) für den Pumpenkolben (25) verbunden ist, wobei die Kolbenstange (26) innerhalb einer Ausnehmung (20) des Pumpengehäuses (11) angeordnet und mittels wenigstens einer Dichteinrichtung (63) abgedichtet ist, wobei die wenigstens eine Dichteinrichtung (63) dazu ausgebildet ist, ein Ausströmen von Kraftstoff (1) aus dem Pumpengehäuse (11) zumindest zu reduzieren. The invention relates to a feed pump (10) for cryogenic fuels (1), with a pump housing (11) in which a pump piston (25) within a pump chamber (30) is arranged back and forth, wherein the pump piston (25) by means of a Piston rod (26) with a drive (40) for the pump piston (25) is connected, wherein the piston rod (26) within a recess (20) of the pump housing (11) and sealed by at least one sealing device (63), wherein the at least one sealing device (63) is designed to at least reduce an outflow of fuel (1) from the pump housing (11).

Feed pump for cryogenic fuels

Die Erfindung betrifft eine Förderpumpe (10) für kryogene Kraftstoffe (1), mit einem Pumpengehäuse (11), in dem ein Pumpenkolben (25) innerhalb eines Pumpenraums (30) hin- und herbeweglich angeordnet ist, wobei der Pumpenkolben (25) mittels einer Kolbenstange (26) mit einem Antrieb (40) für den Pumpenkolben (25) verbunden ist, wobei die Kolbenstange (26) innerhalb einer Längsbohrung (20) des Pumpengehäuses (11) radial geführt und mittels wenigstens einer Dichteinrichtung (60) zur Längsbohrung (20) hin abgedichtet ist, wobei die wenigstens eine Dichteinrichtung (60) dazu ausgebildet ist, ein Ausströmen von Kraftstoff (1) aus dem Pumpengehäuse (11) zumindest zu reduzieren. The invention relates to a feed pump (10) for cryogenic fuels (1), with a pump housing (11) in which a pump piston (25) within a pump chamber (30) is arranged back and forth, wherein the pump piston (25) by means of a Piston rod (26) with a drive (40) for the pump piston (25) is connected, wherein the piston rod (26) within a longitudinal bore (20) of the pump housing (11) guided radially and by means of at least one sealing device (60) to the longitudinal bore (20 ), wherein the at least one sealing device (60) is designed to at least reduce an outflow of fuel (1) from the pump housing (11).

Cryogenic fluid pump

A cryogenic fluid pump includes an outlet tube extending along the pump centerline, the outlet tube having an outlet passage that is fluidly in communication with the combined outlet and with a pump outlet opening, and a shroud that extends concentrically along the outlet tube and has an inner diameter that is larger than an outer diameter of the outlet tube such that a gap is formed in a radial direction between an inner surface of the shroud and an outer surface of the outlet tube, the gap extending along at least a portion of the outlet tube.

Kraftstofffördereinrichtung für kryogene Kraftstoffe

Die Erfindung betrifft eine Kraftstofffördereinrichtung für kryogene Kraftstoffe, umfassend eine Hochdruckpumpe (1) mit einem Gehäuseteil (2), in dem ein zylinderförmiger Kompressionsraum (3) ausgebildet ist, der von einem hin und her beweglichen Kolben (4) begrenzt wird. Erfindungsgemäß ist an das Gehäuseteil (2) im Bereich des Kompressionsraums (3) ein weiteres Gehäuseteil (5) axial angesetzt, so dass ein gemeinsamer Kontaktbereich (6) geschaffen wird, in dem ein metallischer Dichtbereich (6.1) zur Abdichtung gegen den Druck im Kompressionsraum (3) ausgebildet ist.