Verfahren zum Anfahren eines Zwangdurchlauf-Dampferzeugers

A forced-flow once-through boiler installation

... 1,073,276. Raising steam in forced flow steam boilers. SIEMENS - SCHUCKERTWERKE A.G. Jan. 5, 1965 [Feb. 28, 19641, No. 470/65. Heading F4A. In a forced-flow once-through boiler installation in which water is pumped at 1 through heating surfaces 2, evaporator 5 and superheating surfaces 6, 7, a steam separator 8 is arranged between the evaporator 5 and the superheater 6 and is connected to a water container 9 from which a circulation conduit 10 having a pump 11 and valve 21 extends back to the main flow path between the pump 1 and the evaporator 5 to ensure an adequate supply of feed water, e.g. 40% of full load supply is maintained in the steam generation section during stopping or starting or during part load working of the boiler. The total quantity of feed water comprising feed water and circulation water flowing through the evaporator is measured by a measuring device 25 which sends a signal to regulate the pump 1 accordingly and further the level of water in the container 9 is controlled ...

CONTROL SYSTEM FOR VARIABLE PRESSURE ONCE-THROUGH BOILER

CONTROL SYSTEM FOR VARIABLE PRESSURE ONCE-THROUGH BOILER A system for the operation of once-through boilers which utilizes variable throttle pressure over a very wide load operating range is disclosed. The system utilizes a valving arrangement permitting the turbine valve (22) to be opened to a predetermined open position, typically 70 percent of its full open position, as soon as possible during the system loading process, maintaining the turbine valve (22) in this predetermined open position while the flow of steam from the boiler is being varied by a control valve (40) and the output pressure of the boiler is varying accordingly, and then allowing the turbine valve (22) to open further from the predetermined open position when the system reaches full design pressure so as to vary the flow of steam from the boiler while the output pressure thereof is maintained substantially constant. In this manner, the boiler is operated at a variable output pressure over a very wide load operating ...

Dampfkraftanlage mit mindestens einem Durchfluss-Röhrendampferzeuger, mindestens einer Hochdruckverbrauchsstelle und mindestens einer Niederdruckverbrauchsstelle.

Verfahren zum Aufheizen einer mehrstufigen Turbinenanlage

Dampfkraftanlage mit Zwangdurchlauf-Dampferzeuger

Verfahren zum Anfahren einer Dampfkraftanlage

Zwanglaufdampferzeuger

Verfahren zum Anfahren eines Zwangdurchlaufdampferzeugers und Zwangdurchlaufdampferzeuger zum Durchführen des Verfahrens

Zwangdurchlauf-Dampferzeuger mit Zwischenüberhitzung

Verfahren zum Anfahren einer Dampfkraftanlage

Verfahren zum Anlassen eines Dampferzeugers mit Zwanglauf

Verfahren zum Anlassen einer Dampferzeugungsanlage mit Zwangsdurchlauf des verdampfbaren Mediums und Dampferzeugungsanlage zur Durchführung des Verfahrens

Dampfkraftanlage mit Zwischenüberhitzung

Zwangdurchlaufdampferzeuger

Verfahren zum Anlassen einer Dampferzeugungsanlage mit Zwangsdurchlauf des Dampfes

Verfahren und Vorrichtung zur Zuleitung von Dampf hoher Temperatur und niedrigen Druckes an eine Turbine, um diese anzulassen

Verfahren zum Anlassen eines Dampferzeugers mit Zwangsumlauf des Dampfes und Einrichtung zum Durchführen des Verfahrens

Verfahren zum Anfahren eines Zwangdurchlaufdampferzeugers

Dampfkraftanlage mit Zwanglaufdampferzeuger und Zwischenüberhitzer

Dampfkraftanlage mit zwangsläufig durchflossenem Kessel

Verfahren zum Anfahren eines Zwanglaufdampferzeugers und Zwanglaufdampferzeuger zum Durchführen des Verfahrens

Dampfkraftanlage

Hochdruck-Dampfkraftwerk zur Erzeugung elektrischer Energie

Verfahren und Einrichtung zum In- und Ausserbetriebsetzen einer Anlage zum Übertragen von Wärme

Verfahren zum Regeln der Dampftemperatur in einem Dampferzeuger und Einrichtung zum Durchführen des Verfahrens

Verfahren zum Betrieb einer Dampferzeugeranlage

Verfahren und Einrichtung zur Regelung der Ausgangstemperaturen von einen Wärmeaustauscher durchfliessenden Medien

Einrichtung zum Anfahren und Wiederanfahren eines Durchlaufkessels

Dampferzeuger zur Speisung einer Turbine und Verfahren zu dessen Betrieb

Dampfkraftanlage, insbesondere für Stromerzeugung

Dampfkraftanlage

STEAM GENERATOR PLANT.

Improvements brought to the heavy equipment driving by the vapor

Process of starting of a power station of force to vapor

Driving installation with vapor

Improvements with the processes and devices to obtain vapor at high temperature and under low pressure

Power station with vapor with boiler with forced circulation

METHOD FOR RAPID STARTING THE POWER PLANT INSTALLATIONS AFTER A TOTAL CUTTING OFF OF THE STEAM GENERATION

The invention relates to a method for rapid starting the power plant installations after a total cutting off of the steam generation. According to the invention, the method consists in feeding each power plant installation, meant for starting, especially a steam boiler, with steam from a steam storage capacity from the stopped boiler installations.

Control system for variable pressure once-through boilers

A system for the operation of once-through boilers which utilizes variable throttle pressure over a very wide load operating range is disclosed. The system utilizes a valving arrangement permitting the turbine valve (22) to be opened to a predetermined open position, typically 70 percent of its full open position, as soon as possible during the system loading process, maintaining the turbine valve (22) in this predetermined open position while the flow of steam from the boiler is being varied by a control valve (40) and the output pressure of the boiler is varying accordingly, and then allowing the turbine valve (22) to open further from the predetermined open position when the system reaches full design pressure so as to vary the flow of steam from the boiler while the output pressure thereof is maintained substantially constant. In this manner, the boiler is operated at a variable output pressure over a very wide load operating range.

Steam turbine pipe and pipe

A steam turbine pipe 1 of an embodiment includes: an upper half side main steam pipe 11 that leads steam to a steam turbine; an upper half side main steam control valve 30 that intervenes in the upper half side main steam pipe 11; and a post-valve drain pipe 31 that is connected to the upper half side main steam control valve 30 and leads drain to an outside. The steam turbine pipe 1 further includes: a shut-off valve 32 that intervenes in the post-valve drain pipe 31; and a branching pipe 60 that makes the post-valve drain pipe 31 on the side closer to the upper half side main steam control valve 30 than is the shut-off valve 32 communicate with the upper half side main steam pipe 11 between the upper half side main steam control valve 30 and a high-pressure turbine 200.

Dampfkraftanlage

Regeleinrichtung fuer Zwanglauf-Dampferzeuger

POWER PLANTS

... 1433530 Steam turbine plant; powergenerating system BABCOCK & WILCOX CO 18 April 1973 [18 April 1972] 18672/73 Headings F1Q and FIT In a steam engine power-plant, e.g. high and lowpressure steam turbines 54, 64 for use as an auxiliary with a nuclear power-plant run at constant load, including a vapour generating unit 10 providing super-heating of the vapour at 26, 28 and re-heating at 30, and primary temperature control of the steam, e.g. by regulatable gas recirculation or water spray attemperators at 48, 58, for use during normal operation, temperature control during quick start-ups to prevent damage to the turbine by super-heated steam, is effected by attemperators 50, 60 in the super-heated steam lines 52, 62 to the high and low-pressure turbines 54, 64 supplied with saturated steam from the unit 10 via control valves 78, 86 and stop and checkvalves 80, 88. The attemperators 50, 60 each comprise a cylindrical header (51), Fig. 2, (not shown), containing a coaxial manifold (82), receiving ...

Regulation of the outlet temperatures of media flowing through heat exchangers

... 927,643. Fluid-pressure servomotor control systems. SULZER FRERES S.A. Sept. 5, 1960 [Sept. 16, 1959], No. 30572/60. Class 135. [Also in Group XIII] The outlet temperatures of two media flowing through an exchanger 17, Fig. 1, are regulated by varying the mass flow of one of the media in dependence on the outlet temperature of one of the media and varying the inlet temperature of the same or the other medium participating in the heat-exchange, in dependence on the outlet temperature of one of the media, in such a manner that when a change occurs in the outlet temperature of one of the media, the mass flow and the inlet temperature are acted upon in the same sense, and when a change occurs in the outlet temperature of the other medium, the mass flow and the inlet temperature are acted upon in opposite senses. The exchanger supplies a reheat superheater 15 of a steam turbine 16, 18 and is supplied by the superheater 12 of a steam generator. A feedwater injector 23 and a steam by-pass valve ...

Improvements in and relating to governing systems for reheat turbines

... 777,249. Turbines. GENERAL ELECTRIC CO. Sept. 24, 1953 [Sept. 24, 1952], No. 26363/53. Class 110 (3). [Also in Group XXIX] A power plant having in series a boiler, superheater, high-pressure turbine, reheater, main intercept valve, intermediate pressure turbine, low-pressure turbine and condenser has by-pass conduits and valves so arranged that in starting and warming up the boiler the cool steam may be by-passed around the turbines. The purpose of the arrangement is to allow a quick restart of the power plant before it has cooled down an appreciable amount. The valves in the drawing are shown in the quick starting position with the steam boiler 1, superheater 2 and reheater 5 shut down. In this position the hand wheel 32 is screwed down and the lever 19 depressed so that the main operating servopiston 17a is at the bottom of its stroke and the valves 13b, 46a closed. The hand wheel 48 is then rotated so that the nut 48a is at the lefthand end of the lead-screw 48b so that pivot 49a engages ...

POWER CONVERSION APPARATUS

... 1381126 Vapour power plant SUNDSTRAND CORP 5 July 1972 [6 July 1971] 31360/72 Headings F1Q and F1T A power plant operating on the Rankine cycle comprises a source of organic feed liquid, a main heater 12 for raising the temperature and pressure of the feed liquid by out of contact heat exchange with combustion gases, a turbine 14 connected to receive hot fluid from the heater, a regenerator 15 connected to receive vapour from the turbine, the regenerator being adapted to pre-heat at least a portion of the feed liquid by out of contact heat exhange with vapour from the turbine and an economizer 42 for pre-heating at least a portion of the feed liquid by out of contact heat exchange with the combustion gases from the main heater thereby reducing the combustion gas exit temperature. The feed liquid is preferably toluene. As shown the plant includes means 44 for directing a minor portion of the feed liquid to the economizer and means 70 for combining the pre-heated feed liquid from the economizer ...

Steam turbine plants

... 774,222. Power-generating systems. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Dec. 7, 1955 [Dec. 7, 1954], No. 35433/54. Class 122 (3). [Also in Group XIII] In a steam-turbine plant including a superheater 1, and a de-aerator 11, the steam pipe 2 between the superheater outlet and the turbine inlet valve 3 is provided at each end with drain pipes 5, 6 led to an auxiliary condenser 7 connected to the main condenser 8 and the deaerator has a steam coil 13 connected in a valvecontrolled circuit in parallel with the drain pipes whereby, during starting-up, the coil may be heated by surplus steam in the drain pipes. Condensate is pumped by the extraction pump 9 through a low-pressure heater 10 and the deaerator to the feed pump 12.

Device to forced circulation evaporation unit

Power station with vapor with boiler with forced circulation

Power station with vapor with boiler with forced circulation

SYSTEM OF ECONOMICAL PRODUCTION OF SUPERHEATED STEAM.

DAMPFKRAFTANLAGE MIT ORGANISCHEM ARBEITSMITTEL

Verfahren und Vorrichtung zur Ermittlung von Modellparametern zur Regelung eines Dampfkraftwerksblocks, Regeleinrichtung für einen Dampferzeuger und Computerprogrammprodukt

Verfahren zur Ermittlung von zumindest einem Modellparameter eines regelungstechnischen Modells eines Dampferzeugers, wobei für den Dampferzeuger eine regelungstechnische Modellstruktur mit dem zumindest einen charakteristischen Modellparameter vorgegeben wird, und online Messsignale des Dampferzeugungsprozesses aufgenommen werden, dadurch gekennzeichnet, dass der zumindest eine Modellparameter online geschätzt wird, indem die folgenden Schritte durchgeführt werden: a) sowohl dem realen Prozess (P) als auch dem Modell (M) des Dampferzeugers wird dasselbe Eingangssignal (ES) aufgeschaltet, b) es wird eine Schätzbarkeitsanalyse (SBA) durchgeführt, wobei zumindest ein Ausgangssignal jeweils des Prozesses (ASP) und/oder des Modells (ASM) oder zumindest ein Eingangssignal (ES) durch eine vergleichende Auswertung anhand einer Gradientenanalyse verarbeitet wird, c) anhand der Gradientenanalyse werden Schätzbereiche definiert, innerhalb derer eine gültige Parameterschätzung möglich ist, d) wird ...

Vorrichtung und Verfahren zur Abwärmenutzung einer Brennkraftmaschine

Es wird eine Vorrichtung und ein Verfahren zur Abwärmenutzung einer Brennkraftmaschine (2) vorgeschlagen, bei dem in einem Leitungskreis (4), in dem ein Arbeitsmedium zirkuliert, eine Speisepumpe (6), ein Wärmetauscher (8), eine Expansionsmaschine (10) und ein Kondensator (12) angeordnet sind. Im Leitungskreis (4) ist eine Bypassverbindung (14) parallel zur Expansionsmaschine (10) geschaltet, wobei in Abhängigkeit von einer Betriebssituation der Brennkraftmaschine (2) die Expansionsmaschine (10) in den Leitungskreis (4) eingekoppelt oder abgekoppelt wird.

ANFAHREINRICHTUNG FUER ZWANGSDURCHLAUFDAMPFERZEUGER

Method of starting a steam power plant

... 963,351. Starting forced flow steam boilers; feedwater heating. SULZER FRERES S.A. Jan. 30, 1963 [Jan. 30, 1962], No. 3894/63. Heading F4A. A steam power plant comprising a oncethrough boiler supplying steam to a turbine is started up by supplying water heated in a feedwater tank by external steam, separating the steam-water mixture issuing from the evaporator, passing the steam to a superheater and some at least of the separated water to the condenser through a heat exchanger disposed between the condenser and the feed tank. In the form shown the boiler has an economizer 2, an evaporator 3, a preliminary superheater 4, final superheaters 5, 6 and a reheater 7. The superheaters 4, 5 are connected by a pipe 8 in which is a valve 12 serving as a by-pass valve for a separator 10. The boiler supplies steam to a turbine 14, 17 exhausting to a condenser 19 from which a pump 20 delivers condensate through bled-steam heaters 22, 23 and a heatexchanger 30 to a feed tank 24 having an external steam ...

Forced-flow once-through steam generators with intermediate reheating

... 952,398. Forced flow steam boilers. SULZER FRERES S.A. Dec. 20, 1961 [Dee. 28, 1960], No. 45695/61. Heading F4A. In a forced-flow once-through steam generator with intermediate re-heating of the steam which has been partly expanded in the high pressure part of a prime mover, a liquid separator is disposed in a by-pass connecting the high pressure steam main and the steam line leading to the intermediate re-heater, the liquid separator constituting a starting vessel and heat store and being connected to the feed water circuit. A flow regulating element is fitted in the part of the by-pass between the separator and the reheater. The forced-flow once-through stream generator 1 having a superheater 2 is connected by a high pressure steam main 32 through a valve 25 to the H.P. part 3 of a turbine. From here an intermediate pressure steam line 33 fitted with a valve 15 leads to an intermediate re-heater 4, thence through a line 34 to the medium and low-pressure parts 5 of the turbine. A liquid ...

Steam turbine power system and method of operating the same

... 1,133,148. Raising steam. COMBUSTION ENG. Inc. 8 Dec., 1966 [21 Dec., 1965], No. 55100/66. Heading F4A. [Also in Division F1] A steam turbine power plant comprises a superheated steam generator 12 supplying steam at a first pressure to a controllable throttle valve 17 for delivery at a lower pressure to a turbine 14, means for determining the steam temperature required at the turbine and for controlling the first pressure level in response to the required temperature such that this temperature is obtained when the steam is throttled from the first to the lower pressure. The aim of the invention is to reduce thermal stresses in the high-pressure turbine 14 at starting resulting from temperature mismatching between the turbine and the steam supplied thereto. At starting the flow of steam through the convectively heated superheaters 39, 40 is low relative to the flow of steam generator combustion gases, such that the steam temperature leaving superheater 40 is substantially constant regardless ...

A method and apparatus for supplying high temperature low pressure vapor or gas to a turbine

... 1,076,999. Superheating steam. COMBUSTION ENGINEERING Inc. Sept. 3, 1964 [Sept. 20, 1963], No. 36226/64. Heading F4A. [Also in Division F1] A steam turbine plant comprises in flow series a steam generator 16, main control valve 20 and turbine stages 22, 26, 28, a reheater 24 being disposed between stages 22, 26. The condensate is pumped from a condenser 2 through feedwater heaters 6, 12 and a deaerator 8 back to generator 16. For restarting while the turbine casings are still hot, valve 20 is closed and high temperature and pressure steam from generator 16 flows through branch pipe 32 to the high pressure side of a heat exchanger 34. The steam then passes through a throttle valve 36 and enters a flash tank 38 at reduced pressure, any water collected in tank 38 being returned to condenser 2 through pipe 42. Some of the throttled steam passes through valve 48 to the low pressure side of heat exchanger 34 to be heated by the high pressure steam from pipe 32, the heated steam leaving the heat ...

Obligation run boiler

Mechanism for starting and restarting of a run boiler

INTEGRAL SEPARATOR START-UP SYSTEM FOR A VAPOR GENERATOR WITH CONSTANT PRESSURE FURNACE CIRCUITRY

AUTOMATIC CONTROL SYSTEM FOR THERMAL POWER PLANT

ABSTRACT OF THE DISCLOSURE An automatic control system for a thermal power plant comprises a master controller controlling a turbine in response to an externally applied load command signal, and producing a boiler input command singal by correcting the load command signal on the basis of the detected pres-sure of main steam generated from a boiler, and a water/ steam process controller, a fuel process controller, a combustion process controller and a draft process controller to all of which the boiler input command signal is applied from the master controller. The process controllers apply control signals to equipments controlling a water/ steam process, a fuel process, a combustion process and a draft process respectively among the terminal actuating equipments of the various parts of the boiler.

Improvements brought to the control of the steam generators to forced circulation and total vaporization

Process of exploitation of installations of steam generators

Process of starting of a power plant to vapor

Improvements brought to the steam generators to combined circulation

Комбинированная маневренная энергоустановка

Изобретение относится к области теплоэнергетики и применяется для повышения эффективности систем энергоснабжения малых городов и поселений. Техническим результатом изобретения является повышение экономичности и маневренности комбинированной энергоустановки. Технический результат достигается тем, что компрессор ГТУ соединен последовательно с камерой сгорания и газовой турбиной, выход которой подключен к водогрейному котлу-утилизатору, соединенному по горячей воде с тепловым потребителем. Установка, использующая возобновляемые энергоресурсы, соединена с аккумулятором, в котором накапливается электрическая энергия. При необходимости покрытия пика электрической нагрузки ток от аккумулятора подается на электродвигатель, который присоединяется с помощью эластичной гидромуфты к валу компрессора. Вал компрессора с помощью эластичной гидромуфты отсоединяется от вала газовой турбины, что приводит к росту полезной мощности газовой турбины. 1 ил.

Anfahr- und Schwachlastschaltung fuer eine Dampfkraftanlage mit Zwangdurchlaufkessel

Verfahren zum Anfahren eines Zwangdurchlaufdampferzeugers

Improvements in steam power plants

... 218,320. Aktiebolaget Ljungstr÷ms Angturbin. June 29, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Working-fluid supply.-A control means for a steam turbine using high pressure and superheat is situated between the steam space for the saturated steam of the boiler and the superheater. The control means such as a throttle valve is therefore only exposed to saturated steam of moderate temperatures. The Figure shows control means 5a, 5b inserted in conduits leading from the boiler to superheaters 4a, 4b whence the superheated steam passes by conduits 6, 7 to a turbine 3. The steam may pass through a superheater before reaching the control but must not be dry.

PROCEDURE AND MECHANISM FOR THE POWER ADJUSTMENT AT A POWER STATION BLOCK.

TURBINE START-UP SYSTEM

Abstract of the Disclosure Method and apparatus are described that are operative to elevate the temperature of superheated vapor delivered to a turbine, especially during startup of a power plant. A bypass circuit containing a heat exchanger is interposed in the main steam generator evaporative flow circuit whereby regulated amounts of heat are extracted from the plant operating fluid thereby subcooling the same prior to its passage to the evaporator section of the unit. Reduced amounts of steam are thus produced in the evaporator section for a given amount of heat input to the unit and a concomitant increase realized in the temperature to which the steam passed to the superheater is heated. Economies as well as operational advantages are achieved by the production in the heat exchanger of low pressure steam that is usable in the plant to augment steam flow to the low pressure section of the turbine, for soot blowing purposes, and/or for other low pressure steam needs during startup and normal operation of the plant.

VAPOUR OR STEAM GENERATOR PLANT

TURBINE START-UP SYSTEM

Forced Through-Flow Steam Generator and Method of Starting the Same

Improvements with the devices of starting, operation with low load and production of vapor low pressure for the steam generators to forced circulation

HEAT RECOVERY STEAM GENERATING ARRANGEMENT EMPLOYING MEANS FOR PREVENTING ECONOMIZER STEAMING

Adjusting outlet temperatures of the fluids passing through a heat exchanger

Coordinated control system for an electric power plant

The operation of an electric power plant is controlled by generating a control signal in response to the pressure at the throttle valves, the load demand signal and the megawatt output of the power plant. During the start-up, before the pressure ramp ends, the control signal varies in accordance with the difference between the pressure at the throttle valves and the pressure required at the throttle valves to produce the load represented by the load demand signal and, after the pressure ramp ends, the control signal is varied in accordance with the difference between the load represented by the load demand signal and the megawatt output of the power plant. Integral separators are employed during start-up to separate the water from the steam and a bypass system is provided to collect the water from the separators and recirculate it. The firing rate of the furnace is controlled in accordance with the control signal. After the bypass system has gone out of service, the feedwater pump is controlled ...

STEAM-MOTOR CAR.

Control systems for electrical generating units

... 827,242. Turbines. LEEDS & NORTHRUP CO. May 16, 1957, No. 15641/57. Class 110(3). [Also in Groups XXXV, XXXVIII and XL (a)] The speed of a turbine 12 driving an electric generator 11 is regulated in accordance with the output (actual or required) of the generator by arranging an electrical control system (see Group XXXVIII) to adjust the fuel, air and water supplies to the boiler 13 feeding the generator and the steam valve 67 in the pipe 58 feeding the turbine. The signals are obtained from the actual generator output, the required generator output, the temperature and pressure of the vapour entering the turbine and the oxygen content of the flue gases. These are combined in various ways to actuate a motor 77 which adjusts the setting of the speed governor 68 and the steam valve 67, as well as the air intake 57, the fuel input 85 and the water supply 37. The particular method of combining the electrical signals is stated to ensure efficient action of the turbine under changing lead conditions ...

Power generation assembly and method

Steam power plant including a forced-flow steam generator having a reheater

... 1,061,889. Forced flow steam boilers. SULZER BROS. Ltd. July 6, 1964 [July 23, 1963], No. 27817/64. Heading F4A. In a steam power plant comprising a forced flow boiler supplying a turbine having a high pressure stage 9 and a low pressure stage 15 with an intermediate stage reheater 5, the boiler plant is started by first pumping water from a feed tank 19 through an economizer 2, an evaporator 3, a superheater 4 and a separator 21 to return to the feed tank 19 through the valve 41. The boiler is fired at 10% of full load rate and the steam that evolves in the separator as pressure reduces through the valve 20 flows through the pipe 42 to the reheater 5 and then to the high pressure turbine 9 via pipe 25, cooling the reheater and warming the high pressure turbine 9, the steam exhausting from the high pressure turbine 9 into the feed tank 19 to de-aerate water entering the tank from the condenser 16. The valve 14 is then opened to warm the low pressure turbine 15 and when the high and low ...

Startup system for a steam actuated electric generator

... 1,116,706. Raising steam in forced flow boilers. ELECTRODYNE RESEARCH CORPORATION. 12 April, 1966 [30 April, 1965], No. 15989/66. Heading F4A. A forced flow steam generator 1, includes evaporator and super-heater heating conduits 4, 5 connected in series and leading to a superheater steam outlet 3. From here the steam passes through high pressure turbine 8, reheater 10 and the reheat turbine 13 to, a condenser 16. Water from the condenser 16 is pumped by pump 21 through water purification equipment 22, low pressure feed water heater 24, and deaerator 26 to de-aerator storage tank 30. The feed water pump 33 draws water from the deaerator storage tank 30 and passes it through a high pressure feed water heater 36 on its way to inlet 2. The feed water flow to the generator 1 is regulated in co-ordination with the firing rate by control valve 35. During start up, with valves A and B initially closed, a circulation flow is established through the evaporator heating conduits 4, conduit 42, one ...

METHOD AND APPARATUS FOR REGULATING SUPER-HEATED STEAM TEMPERATURES IN A STEAM GENERATOR PLANT

... 1528396 Regulating superheated steam temperature COMBUSTION ENG Inc 15 Dec 1975 [16 Dec 1974] 61270/75 Heading F4A The temperature of vapour leaving the superheater of a boiler having a substantially constant heat input is controlled by extracting a proportion of the heat of liquid leaving the evaporation and returning the cooled liquid to the evaporator whereby the quantity of vapour produced in the evaporator is reduced. As shown liquid from the separator 32 is returned to the evaporator 10 by a pump 60. A proportion of the return is by-passed to an economizer 54 under the control of a valve 64 controlled by a superheat temperature sensor 94, the by-passed portion passing through a heat-exchanger 66 where it is cooled and heats a fluid flowing in lines 82, 72. This fluid may come from the condenser 48 and after heating be fed to the intermediate stage 14 or L.P. stage 16 of a turbine or to the condenser 48, under the control of valves 90, 88, 86. Alternatively fresh fluid may enter through ...

METHOD AND APPARATUS FOR GENERATING MECHANICAL POWER OUT OF THERMAL ENERGY

AUTOMATIC CONTROL SYSTEM FOR STEAM POWER PLANT

AUTOMATIC VAPOR ENGINE START-UP

BY-PASS SYSTEM FOR A VAPOR GENERATOR

CONTROL SYSTEM FOR VARIABLE PRESSURE ONCE-THROUGH BOILER

Process for the starting of a generator with circulation forced and generating for its application

STEAM TURBINE PIPE AND PIPE

A steam turbine pipe of an embodiment includes: an upper half side main steam pipe that leads steam to a steam turbine; an upper half side main steam control valve that intervenes in the upper half side main steam pipe ; and a post-valve drain pipe that is connected to the upper half side main steam control valve and leads drain to an outside. The steam turbine pipe further includes: a shut-off valve that intervenes in the post-valve drain pipe ; and a branching pipe that makes the post-valve drain pipe on the side closer to the upper half side main steam control valve than is the shut-off valve communicate with the upper half side main steam pipe between the upper half side main steam control valve and a high-pressure turbine 15-. (canceled)6. A steam turbine pipe in a steam turbine facility , comprising:an upper half side main steam pipe that leads steam from a boiler to an upper half side of a steam turbine;a lower half side main steam pipe that leads steam from the boiler to a lower half side of the steam turbine;an upper half side main steam control valve that intervenes in the upper half side main steam pipe and regulates a flow rate of the steam to be led to the upper half side of the steam turbine;a lower half side main steam control valve that intervenes in the lower half side main steam pipe and regulates a flow rate of the steam to be led to the lower half side of the steam turbine; andan upper half side drain pipe that is connected to the upper half side main steam control valve and has an open end.7. The steam turbine pipe according to claim 6 , further comprising:a lower half side drain pipe that is connected to the lower half side main steam control valve and leads drain to an outside; anda shut-off valve that intervenes in the lower half side drain pipe,wherein the open end of the upper half side drain pipe is connected to the lower half side main steam pipe between the lower half side main steam control valve and the steam turbine.8. The steam ...

Steam turbine pipe and pipe

A steam turbine pipe 1 of an embodiment includes: an upper half side main steam pipe 11 that leads steam to a steam turbine; an upper half side main steam control valve 30 that intervenes in the upper half side main steam pipe 11 ; and a post-valve drain pipe 31 that is connected to the upper half side main steam control valve 30 and leads drain to an outside. The steam turbine pipe 1 further includes: a shut-off valve 32 that intervenes in the post-valve drain pipe 31 ; and a branching pipe 60 that makes the post-valve drain pipe 31 on the side closer to the upper half side main steam control valve 30 than is the shut-off valve 32 communicate with the upper half side main steam pipe 11 between the upper half side main steam control valve 30 and a high-pressure turbine 200.

AIR START STEAM ENGINE

A method and system using at least two different working fluids to be supplied to an expander to cause it to do mechanical work. The expander is started by providing a compressed gaseous working fluid at a sufficient pressure to the expander. At the same time the compressed gaseous working fluid is provided to the expander, a second working fluid that is liquid at ambient temperatures is provided to a heater to be heated. The second working fluid is heated to its boiling point and converted to pressurized gas Once the pressure is increased to a sufficient level, the second working fluid is injected into the expander to generate power, and the supply of the first working fluid may be stopped. After expansion in the expander, the working fluids are is exhausted from the expander, and the second working fluid may be condensed for separation from the first working fluid. Control circuitry controls the admission of the first and second working fluids responsive to monitoring the load on the expander. 1. A combined cooling , heating , and power generation unit comprising:a first vessel holding a quantity of a first pressurized gaseous working fluid that is gaseous at ambient temperature, being pressurized to a pressure substantially greater than ambient pressure;a second vessel holding a quantity of a second working fluid that is in a liquid state at ambient temperature;a controllable heater in controllable communication with at least said second vessel for heating at least said second working fluid;an expander in controllable communication with said heater and said first vessel, such that said expander can receive said first pressurized gaseous working fluid and/or receive said second working fluid, having been heated by said heater to be vaporized and form a second pressurized gaseous working fluid, said first and/or second pressurized gaseous working fluids being supplied to at least one chamber in said expander where said pressurized gaseous working fluids can expand, ...

Steam turbine pipe and pipe

A steam turbine pipe 1 of an embodiment includes: an upper half side main steam pipe 11 that leads steam to a steam turbine; an upper half side main steam control valve 30 that intervenes in the upper half side main steam pipe 11 ; and a post-valve drain pipe 31 that is connected to the upper half side main steam control valve 30 and leads drain to an outside. The steam turbine pipe 1 further includes: a shut-off valve 32 that intervenes in the post-valve drain pipe 31 ; and a branching pipe 60 that makes the post-valve drain pipe 31 on the side closer to the upper half side main steam control valve 30 than is the shut-off valve 32 communicate with the upper half side main steam pipe 11 between the upper half side main steam control valve 30 and a high-pressure turbine 200.

The automatic control system of steam power plant

一热电厂的自动控制系统包括根据外加负载指令信号控制一汽轮机和在产生于锅炉的主蒸汽检测压力的基础上通过修正负载指令信号产生一锅炉输入指令信号的控制器，一水/蒸汽过程控制器，一燃烧过程控制器和一通风过程控制器，锅炉输入指令信号从主控制器被施加到上述所有控制器中。过程控制器将控制信号施加到设备上在锅炉不同部件的终端驱动设备中分别控制水/蒸汽过程、燃料过程、燃烧过程和通风过程。

Control system variable pressure once-through boilers

A control system for a boiler has a flow path extending between a furnace and an output, the system comprising; a first valve capable of diverting flow from the furnace out of said flow path, a second valve positioned at the output, a third valve and a fourth valve connected in parallel within one another in the flow path, and control means for the first to fourth valves. The control means is responsive to certain system parameters to cause the valves to operate differently during different phases of operation of the system.

Patent JPS6252122B2

Method for providing heat from an oxidation process and from electrical energy

The invention relates to a method for obtaining a hydrocarbon-containing gas, comprising the generation of heat by operating an apparatus for oxidizing a hydrocarbon-containing gas, characterized in that, optionally, a required provision of heat from the oxidation of the hydrocarbon-containing gas is replaced by the provision of heat from electrical energy by means of an apparatus for providing heat by using electric current and the non-oxidized hydrocarbon-containing gas is provided. The invention further relates to a system for carrying out said method.

Vapor generator start-up system

A single-axis steam generator, comprising: a main flow path including a plurality of heating surfaces, a point of use and an output db end of said heating surfaces, connected to said point of use; a starter bypass system, including a first conduit leading from the main flow path of said outlet end of the heating surfaces; means for reducing pressure in said duct; a second conduit connected to the inlet end of the pressure reduction means, which leads, in return, to said main flow path, connected to the latter at a point downstream of the first conduit in communication with said point of use; the second conduit also containing pressure reducing means including control means comprising first inlet means responsive to the temperature of the steam at the outlet end of the heating surfaces, and second inlet means responsive to the steam conditions at said point of use, said second inlet means responding when said outlet end of the heating surface reaches a predetermined temperature. (Machine-translation by Google Translate, not legally binding)

Patent FR2295227B1

Hot water regenerative heat turbine plant

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Electro-steam generator installation

Control process, apparatus and installation

Method of regulating the speed of the motor shaft of a turbine using the small temperature differences between two masses of water

Device for adjusting the pressure of the working fluid passing through a starting line of a forced circulation boiler

Control systems for boilers

Advanced humid air gas turbine system

One of the objects of the invention is to provide a water-saving type advanced humid air gas turbine system (AHAT) that can decrease the amount of makeup water to be supplied from the outside, by reducing the amount of water consumed when the gas turbine system is starting up, shut down, or subjected to load rejection. The gas turbine system includes a compressor, the compressed air header for generating humidified combustion air, a combustor for generating combustion gas, and the turbine. When the gas turbine system is starting up, shut down or subjected to load rejection, steam coming from the heat recovery steam generator is recovered by blocking the first steam system and making the second steam system communicate with the heat recovery steam generator.

Forced flow steam generating system

Steam generating plant

Steam utilization system

Automatic controller for thermal power plant

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Method and device for determining model parameters for controlling a steam power plant block, control unit for a steam generator and computer program product

본 발명은 증기 발생기의 제어 공학적 모델의 하나 이상의 모델 변수(M)를 결정하는 방법 및 관련 장치에 관한 것으로, 상기 방법에서는 증기 발생기를 위해 하나 이상의 특성 모델 변수를 가지는 제어 공학적 모델 구조가 사전 설정된다. 증기 발생 공정의 측정 신호들은 온라인으로 기록된다. 본 발명에 따르면, 하나 이상의 모델 변수가 온라인으로 추정된다. 이를 위해 실제 공정(P)뿐만 아니라 증기 발생기 모델에도 동일한 입력 신호(ES)가 인가된다. 이어서 추정 분석(SBA)이 실행되며, 이때 각각의 공정 및/또는 모델의 하나 이상의 출력 신호(ASP 및/또는 ASM) 또는 하나 이상의 입력 신호가 기울기 분석(SWG)에 기초한 비교 평가에 의해 처리된다. 추가 단계에서 기울기 분석에 기초하여 유효 변수 평가가 가능한 추정 범위가 정의된다. 만약 상기 추정이 긍정적이라 판단되면, 하나 이상의 모델 변수의 현재 추정치가 개선되고, 상기 모델은 계속해서 반복 공정(SW)에서 추정치를 이용해 적응된다. 본 발명은 또한 증기 발생기용 제어 유닛 및 컴퓨터 프로그램 제품에 관한 것이다. The present invention relates to a method and associated apparatus for determining one or more model parameters (M) of a control engineering model of a steam generator, wherein a control engineering model structure having one or more characteristic model parameters for the steam generator is preset . The measurement signals of the steam generation process are recorded online. According to the invention, one or more model variables are estimated on-line. To this end, the same input signal (ES) is applied to the steam generator model as well as the actual process (P). An estimation analysis (SBA) is then performed, in which one or more output signals (ASP and / or ASM) or one or more input signals of each process and / or model are processed by a comparative evaluation based on tilt analysis (SWG). At an additional step, an estimate of the effective parameter estimates is defined based on the slope analysis. If the estimate is determined to be positive, the current estimate of one or more model variables is improved and the model is subsequently adapted using estimates in the iterative process (SW). The present invention also relates to a control unit and a computer program product for a steam generator.

METHOD AND DEVICE FOR CONTROLLING THE POWER ON A POWER PLANT

1. Method for output regulation in a power unit comprising a forced-through-flow steam generator (1), steam turbine (2) and generator (3), in which the electric generator outptut is adjusted by way of a control action (10) in the energy supply of the steam generator (1), and the steam pressure (pi ) before the turbine is adjustable by way of a control action (6) in the steam throughput of the turbine, in which a correstive signal, which is temporally decaying, derived from the manipulated variable of the output regulating circuit, influences the command variable (ps ) of the pressure regulating circuit, characterized in that the corrective signal is generated when, in a model-like electrical simulation (12, 13) of the controlled system "steam generator", a signal corresponding to the "steam generation behaviour" of the steam generator is subtractively combined with the actuating signal of the energy regulator and the difference signal is delayed corresponding to the store behaviour of the steam generator.

Method of operating a steam turbine device at low load level

By-pass system for a vapor generator

Steam-generation plant

Patent FR2145251A5

Steam and hot-air engine

Method and device for controlling the steam temperature of a steam generator

Control system

Boiler control system

A method and means for controlling the throttle pressure of a fuel fired drum type boiler by controlling the fuel input to the boiler so as to equalize the boiler demand, calculated as the product of a quantity proportional to the rate of energy output from the boiler at the existing throttle pressure times the ratio of the desired throttle pressure to the existing throttle pressure, and the heat released to the boiler by the fuel, calculated as the sum of a quantity proportional to boiler output and the measured rate of change of drum pressure.

Patent GB1052385A

1,052,385. Steam generators. COMBUSTION ENGINEERING Inc. Nov. 12, 1963 [Nov. 20, 1962], No. 44585/63. Heading F4A. In a method of starting a forced flow once through vapour generator in which initially fluid is recirculated through the vapour generating section and a primary superheater, pressure and temperature conditions at the outlet of the primary superheater are accurately measured in a section of the recirculation circuit and the flow to a finishing superheater commenced and controlled in accordance with said conditions to ensure that all the fluid flashes to vapour before entering the finishing superheater. The vapour generator heated by combustion gases consists of a feed pump 12, Fig. 1 (not shown), supplying fluid from a deaerator 14 through a preheater 18 and an economizer 22 to a vapour generating section 24 and primary and finishing superheaters 26, 28 from which vapour passes through a turbine 30 to a condenser 32 with a shut-off valve 55 and a throttling valve 56 arranged in parallel to control the flow between the superheaters 26 and 28. The starting method consists of closing valves 55, 56 opening boiler extraction valves 51, 52 in an extraction line 50 to the condenser, supplying vapour from an auxiliary source 38 to the deaerator 14 and circulating fluid through section 24 and superheater 26 whilst the generator is being fired until the clean-up operation is completed. A feed valve 20 is then closed and with valve 51 set to open only at a given relief pressure, fluid is recirculated by pump 48 through section 24 via conduit 44 and through the superheater 26 via conduit 60. At the same time the turbine is heated and rolled by vapour from the source 38 which first cools the superheater 28. The flow through conduit 60 allows the temperature and pressure before valves 55, 56 to be accurately measured. When conditions ensure the complete flashing to vapour of the fluid, the control element 68 commences to open valve 56, feed valve 20 is opened to pass ...

Method and device for operating a steam generator

Method of starting a single pass steam generator

Electricity generating system control

1. Method for output regulation in a power unit comprising a forced-through-flow steam generator (1), steam turbine (2) and generator (3), in which the electric generator outptut is adjusted by way of a control action (10) in the energy supply of the steam generator (1), and the steam pressure (pi ) before the turbine is adjustable by way of a control action (6) in the steam throughput of the turbine, in which a correstive signal, which is temporally decaying, derived from the manipulated variable of the output regulating circuit, influences the command variable (ps ) of the pressure regulating circuit, characterized in that the corrective signal is generated when, in a model-like electrical simulation (12, 13) of the controlled system "steam generator", a signal corresponding to the "steam generation behaviour" of the steam generator is subtractively combined with the actuating signal of the energy regulator and the difference signal is delayed corresponding to the store behaviour of the steam generator.

Steam plant comprising a circulation boiler and a circulation pump

Improvements in and relating to start-up or low load operation of forced-flow once-through steam generating units

1,073,581. Raising steam in once-through forced - flow steam generators. FOSTER WHEELER CORPORATION. May 20, 1964 [May 20, 1963], No. 20916/64. Heading F4A. [Also in Division F1] A forced-flow once-through steam generating unit comprising steam generating sections 14, 16 and superheating sections 22, 24 in series, whose output passes to a two-stage turbine 26, 30 and then to a condenser 32, to be recirculated through heaters 36, 42 and a de-aerator and storage tank 38, 40 by pumps 85, 34 back to economizer 12, has a start-up arrangement including a pressure reducing station 44 before the first superheater 22 and a turbine by-pass 48 between the superheating sections 22, 24 respectively. The pressure reducing station, Fig. 7 (not shown), comprises three reducing valves in parallel with one another and with a double-port high capacity valve which is in series with an isolation shut-off valve, all in parallel with the main flow line valves used during normal operation. The by-pass line 48 includes stop valve 52, itself by-passed by line 98, spray at temperator 54 arid flash tank 46, from whence water lines 68a, 68b, controlled by valves 72, 74 respectively lead to the condenser hot well 70 and the high pressure heaters, whilst steam line 56 with valve 58 leads to the inlet of superheater 24 (isolatable from superheater 22 by valve 50 in the main flow line) and steam line 60 with valves 66, 64, 62 and 82 respectively in its branches, leads to the high pressure heaters 42, deaerator 38, the turbine gland seal regulator and into a second turbine by-pass 76 controlled by valve 78, leading from the outlet of superheater 24 to the condenser 32. Raising steam.-A 30% full load flow through the furnace circuitry to cool it, first at 600 p.s.i., then at operating pressure (3650 p.s.i. for supercritical or 2250 p.s.i. for subcritical operation) is established, throttled at pressure reducing station 44 to 100 p.s.i., the output all passing via line 48 to flash tank 46 and thence ...

Device and method for the recovery of waste heat from an internal combustion engine

The invention relates to a device and a method for the recovery of waste heat from an internal combustion engine (2), according to which a feed pump (6), a heat exchanger (8), an expansion engine (10) and a capacitor (12) are arranged in a circuit (4) containing a circulating working medium. A bypass connection (14) is mounted in parallel to the expansion engine (10), in the circuit (4), the expansion engine (10) being coupled to the circuit (4), or decoupled therefrom, according to an operating situation of the internal combustion engine (2).

Method and apparatus relating to vapor generation

Patent JPS4920616A

Economic combination and operation of boiler throttle valves

Process for starting up a forced-flow steam generator and forced-flow steam generation for carrying out the process

Decoupled cascade control system

Control of the throttle pressure in a drum boiler-turbine system is accomplished by controlling the rate of fuel feed with a cascade control system. When fuel feed cannot be directly measured, but is computed from boiler output, the controllers in the system are decoupled to prevent their interaction. The primary control responds to throttle pressure deviation to produce a heat release demand signal which is compared to the calculated heat release. A signal produced by summing components of the heat release calculation, namely steam flow and rate of change of drum pressure, is used to cancel out any contribution to the input to the primary controller by changes in throttle pressure resulting from disturbances in the fuel feed, which disturbances will be corrected by the secondary or fuel feed controller.

Provision of starting of motor groups. (Machine-translation by Google Translate, not legally binding)

Starting arrangement of motor groups, characterized in that in a motor system having a turbine and a forced-flow steam generator having a flow passage circuit including a re-heater connected for fluid flow in series to the turbine, provide for means for starting the generator and the steam turbine comprising a flash tank for separating steam and liquid, means for supplying a vaporizable liquid under pressure to the flow passage circuit, means for passing liquid from said circuit from a position upstream of the superheater to the flash tank while its pressure is reduced to the point where a portion of the liquid vaporizes instantaneously, and means for passing the steam away from the flash tank to the discharge side of the superheater for the mix with the output flow of the superheater. (Machine-translation by Google Translate, not legally binding)

Method and device for determining model parameters for controlling a steam power plant block, control unit for a steam generator and computer program product

본 발명은 증기 발생기의 제어 공학적 모델의 하나 이상의 모델 변수(M)를 결정하는 방법 및 관련 장치에 관한 것으로, 상기 방법에서는 증기 발생기를 위해 하나 이상의 특성 모델 변수를 가지는 제어 공학적 모델 구조가 사전 설정된다. 증기 발생 공정의 측정 신호들은 온라인으로 기록된다. 본 발명에 따르면, 하나 이상의 모델 변수가 온라인으로 추정된다. 이를 위해 실제 공정(P)뿐만 아니라 증기 발생기 모델에도 동일한 입력 신호(ES)가 인가된다. 이어서 추정 분석(SBA)이 실행되며, 이때 각각의 공정 및/또는 모델의 하나 이상의 출력 신호(ASP 및/또는 ASM) 또는 하나 이상의 입력 신호가 기울기 분석(SWG)에 기초한 비교 평가에 의해 처리된다. 추가 단계에서 기울기 분석에 기초하여 유효 변수 평가가 가능한 추정 범위가 정의된다. 만약 상기 추정이 긍정적이라 판단되면, 하나 이상의 모델 변수의 현재 추정치가 개선되고, 상기 모델은 계속해서 반복 공정(SW)에서 추정치를 이용해 적응된다. 본 발명은 또한 증기 발생기용 제어 유닛 및 컴퓨터 프로그램 제품에 관한 것이다.

Patent DK136227C

Improvements in steam-electric generating plants

1,005,884. Steam turbines; steam turbine plant. GILBERT ASSOCIATES Inc. Dec. 28, 1961 [Jan. 6, 1961], No. 46439/61. Headings F1Q and F1T. [Also in Division F4] Temperature and pressure conditions in a steam turbine TU forming part of a steam/ electric power plant are controlled during startup and shutdown by a throttling and shut-off valve system comprising valves A, B located between the evaporating and superheating sections of the steam generator combined with control both of the firing rate and of the rejection or conservation of heat from the evaporating section; the latter control feature which is particularly used during startup involves by-passing a part or all of the evaporating section flow to a flash tank FT through a further control valve R. From the flash tank steam or drain water may be rejected to a condenser CO or may be conserved by use in feed water heaters HPHI, HPH2 and in a feedwater deaerator system DE, DES. Steam at lower pressure than exists in the evaporator may also pass to the superheater through valve V. During startup turbine steam and metal temperature measurements are used to control the quantity and pressure of steam passing through the valve V into the superheater, valves A and B being closed initially, and to vary the firing rate and also the degree of rejection or conservation of heat from the evaporating section flow. When the superheater pressure reaches the normal maximum working pressure of the flash tank FT, valves A and B may be progressively opened and valves R and V progressively closed. The feedwater system includes a demineraliser CFD, low pressure heater LPH, high pressure heaters HPH1 and HPH2 and a deaerator system which is provided with its own separately fired heater D for startup purposes.

Steam generating plant

Subcritical direct air cooling unit cold starting method

本发明公开了一种亚临界直接空冷机组冷态启动方法，包括：单元发电机组锅炉准备，令锅炉达到预设的供汽条件；锅炉产汽建立系统压力；将产出蒸汽投入主蒸汽供轴封系统进行暖管，并投入汽轮机轴封，以建立机组真空；将产出冷再投入辅汽系统进行暖管，并投入除氧加热器及炉底加热。采用新的控制方式及工作方法，在锅炉产生蒸汽后，先进行主蒸汽供轴封系统的暖管、向汽轮机轴封供汽、投入辅汽系统暖管，投入除氧加热器及炉底加热的操作，为机组的运行先行提供适合的运行环境，以便辅助机组的启动，不再需要外接的辅助气源，直接通过自身供应蒸汽预先进入管道暖管，清洗除杂，防止杂质进入汽轮机，提升了设备的工作效率，降低了启动阶段所需的能耗。

Gas turbine comprising thermal energy store, method for operating same, and method for modifying same

The use of a thermal energy store (103) combined with a gas turbine (103) allows the installation (1) to be operated flexibly.

Steam valve device and steam turbine plant

In the embodiment, a steam valve device has, a steam regulating valve, and an intermediate flow path connecting the main steam stop valve and the steam regulating valve. The main steam stop valve and the steam regulating valve respectively have: casings where flow paths are formed between horizontal inlet ports and outlet ports opened downward and valve seats are arranged in the flow paths; valve elements movable up and down in the casings; and valve rods for driving the valve elements. The valve rods extend upward, and they are pulled off upward in a direction to outside of the casings when opening the flow paths. The intermediate flow path changes the flow direction of main steam flowing out of the outlet port of the main steam stop valve from downward direction to horizontal direction to guide the main steam toward the outlet ports of the steam regulating valves.

Steam-generator.

Coordinated control system for an electric power plant

The operation of an electric power plant is controlled by generating a control signal in response to the pressure at the throttle valves, the load demand signal and the megawatt output of the power plant. During the start-up, before the pressure ramp ends, the control signal varies in accordance with the difference between the pressure at the throttle valves and the pressure required at the throttle valves to produce the load represented by the load demand signal and, after the pressure ramp ends, the control signal is varied in accordance with the difference between the load represented by the load demand signal and the megawatt output of the power plant. Integral separators are employed during start-up to separate the water from the steam and a bypass system is provided to collect the water from the separators and recirculate it. The firing rate of the furnace is controlled in accordance with the control signal. After the bypass system has gone out of service, the feedwater pump is controlled in accordance with the control signal. After the pressure ramp ends, the position of the throttle valves is controlled in accordance with the control signal.

Steam turbine improvements

Power plant

Steam power plant with forced steam generator and reheater

Method of starting a forced circulation single-pass steam generator, and steam generator suitable for this method

Start-up system for steam generator with forced circulation

Steam valve device and steam turbine plant

실시형태에서는, 증기 밸브 장치는, 주(主)증기 정지 밸브와, 증기 가감 밸브와, 주증기 정지 밸브와 증기 가감 밸브를 접속하는 중간 유로를 갖는다. 주증기 정지 밸브 및 증기 가감 밸브는 각각, 수평 방향의 입구부와 아래 방향으로 개구된 출구부 사이에 유로를 형성하고, 유로 내에 밸브 시트가 배치된 케이싱과, 케이싱 내에서 상하 방향으로 이동 가능한 밸브 소자와, 밸브 소자를 구동하는 밸브 로드를 갖는다. 밸브 로드는 상방으로 연장되어, 유로를 개방할 때에 케이싱 외측의 상방으로 빼내진다. 중간 유로는, 주증기 정지 밸브의 출구부로부터 유출한 주증기의 흐름 방향을 아래 방향으로부터 수평 방향으로 바꾸어 증기 가감 밸브의 출구부를 향하여 유도한다. In embodiment, a steam valve apparatus has a main steam stop valve, a steam regulating valve, and the intermediate | middle flow path which connects a main steam stop valve and a steam regulating valve. The main steam stop valve and the steam regulating valve respectively form a flow path between a horizontal inlet and a downwardly open outlet, a casing having a valve seat disposed therein, and a valve movable up and down in the casing. Element and a valve rod for driving the valve element. The valve rod extends upwards and is pulled out above the casing outside when the flow path is opened. The intermediate flow path changes the flow direction of the main steam flowing out from the outlet of the main steam stop valve from the downward direction to the horizontal direction and guides the outlet of the steam regulating valve.

Method and system for starting and stopping closed cycle turbomachines

본 개시내용은 폐쇄 사이클에서 초임계 유체를 이용하는 동력 발생 시스템에서 터보머신을 시동하고 신속하게 감속하기 위한 방법에 관한 것이다.

Combined circulation steam generator and method of initiating its operation

997,549. Forced flow steam boilers. COMBUSTION ENGINEERING Inc. Feb. 18, 1964 [March 25, 1963], No. 6691/64. Heading F4A. A once through forced flow steam generator having a main fuel pump driven by steam from an auxiliary boiler during start up and fluid recirculation through the portion of the generator having the highest heat absorption comprises an economizer 12, tube lined furnace centre and outer walls 14, 16, gas pass walls 18 and a series of fluid heaters 20 consisting of sinuous inter-nested tubular panels. Steam passes from the heaters 20 through H.P. and L.P. turbines 28, 34 to condenser 38 from which condensate passes to a demineralizer 44, L.P. feedwater heaters 46, de-aerator 48, motor driven feedwater booster pump 50, intermediate pressure heaters 52, main feed pump 54 driven by steam turbine 88, H.P. feedwater heaters 56 and re-enters the generator via feedwater control valve 10. Fluid is recirculated through the furnace wall sections 14, 16, 18 and conduit 58 connected to a mixing vessel 60 downstream of economizer 12 by a pump 62. Suitable valves 64 are placed upstream and downstream of the pump which is bypassed by conduit 66 containing a check valve 68. Boiler throttle and boiler throttle bypass valves 70, 72 are provided immediately before the heaters 20 and a flash tank 76 is connected up and downstream of these valves by conduits 74, 80 containing reducing valve 78 and control valve 82, the lower portion of the tank being connected to the hot well of the condenser by conduit 84. The method of starting comprises filling the generator by means of pump 50 to the level of valves 70, 72 which are closed, starting the recirculating pump 62 and circulating about 10% of maximum flow through the portion of the generator upstream of valves 70, 72 and through conduits 74, 84 with pump 54 and commencing heating. Pump 54 is driven by turbine 88 supplied with steam from an auxiliary boiler 90 normally provided to supply steam for turbine sealing (through ...

Power plant with a steam boiler with natural circulation and a steam turbine.

Method of operating a boiler vessel

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Methods and systems for starting and stopping a closed-cycle turbomachine

Gas turbine comprising thermal energy store, method for operating same, and method for modifying same

An energy generation plant in which the exhaust gas from a gas turbine is guided into a thermal energy store, wherein the thermal energy store can be used for various purposes. The energy generation plant has at least one gas turbine having an exhaust gas apparatus, at least one generator, at least one thermal energy store, wherein the generator can be driven by the gas turbine, wherein the hot exhaust gas from the gas turbine is passed directly to a thermal energy store via the exhaust gas apparatus, wherein the thermal energy from the thermal energy store can be used to generate power.

Steam turbine pipe

蒸气涡轮配管及配管

一种蒸气涡轮配管及配管，在蒸气涡轮配管系统中防止温度的异常的上升，可靠性较高。实施方式的蒸气涡轮配管是蒸气涡轮设备中的蒸气涡轮配管。蒸气涡轮配管具备：上半侧主蒸气管，将来自锅炉的蒸气向蒸气涡轮引导；上半侧主蒸气调节阀，夹装在上半侧主蒸气管中，调整向高压涡轮引导的蒸气的流量；以及阀座后泄流管，连接于上半侧主蒸气调节阀，将泄流向外部引导。进而，蒸气涡轮配管(1)具备：截止阀，夹装在阀座后泄流管(31)中；以及分支管，使比截止阀靠上半侧主蒸气调节阀侧的阀座后泄流管与上半侧主蒸气调节阀和高压涡轮之间的上半侧主蒸气管连通。

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Methods and systems for starting and stopping a closed-cycle turbomachine

The present disclosure relates to methods for starting and rapidly decelerating a turbomachine in a power generation system that utilizes a supercritical fluid in a closed cycle.

Metodo per l'avviamento e la gestione di un impianto termico a ciclo combinato per la produzione di energia e relativo impianto

Rotary motor operated by fluid pressure

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Ενας ηλιακος θερμοηλεκτρικος σταθμος και μια μεθοδος λειτουργιας ενος ηλιακου θερμοηλεκτρικου σταθμου

Ένα σύστημα εφεδρικού λέβητα για έναν ηλιακό θερμοηλεκτρικό σταθμό (201) για τη μεταφορά ηλιακής ενέργειας σε ηλεκτρισμό, όπου το εν λόγω σύστημα εφεδρικού λέβητα περιλαμβάνει έναν θάλαμο καύσης (70) και ένα τμήμα συναγωγής (80) σε υγρή σύνδεση με τον εν λόγω θάλαμο καύσης (70), όπου στο τμήμα συναγωγής (80) παρέχεται τουλάχιστον ένας πρώτος εναλλάκτης θερμότητας (92) για τη θέρμανση του μείγματος τετηγμένων αλάτων του ηλιακού θερμοηλεκτρικού σταθμού και ένας δεύτερος εναλλάκτης θερμότητας (90) για την προθέρμανση της τροφοδοσίας του λέβητα (25) διαμορφώνεται, έτσι ώστε να επιτρέπει την επιλογή μεταξύ της παροχής θερμότητας μόνο στον πρώτο εναλλάκτη θερμότητας (92), της παροχής θερμότητας μόνο στον δεύτερο εναλλάκτη θερμότητας (90) και παροχής θερμότητας και στους δυο εναλλάκτες θερμότητας (90, 92), κατά προτίμηση αναλόγως τη διαθεσιμότητα ηλιακής ακτινοβολίας και/ή τη ζήτηση παραγωγής ηλεκτρικής ενέργειας. Η εφεύρεση αναφέρεται επίσης σε έναν ηλιακό θερμοηλεκτρικό σταθμό (201) για τη μεταφορά ηλιακής ενέργειας σε ηλεκτρισμό και μια μέθοδο για τη λειτουργία ενός ηλιακού θερμοηλεκτρικού σταθμού.

Steam-propelled vehicle.

Perfectionnements aux procédés et dispositifs pour commander et régler l'admission de fluide moteur à des machines du genre des turbines

Leistungsüberwachungsgerät für ein Stromkaltendsystem einer Dampfturbinenanlage

Leistungsüberwachungsgerät für ein Stromkaltendsystem einer Dampfturbinenanlage, dadurch gekennzeichnet, dass es umfasst: eine Stützkomponente (100), die eine Stützplatte (101) und eine am Oberteil der Stützplatte (101) angeordnete Verbindungsplatte (102) umfasst; eine Entstaubungskomponente (200), die einen auf einer Seite der Verbindungsplatte (102) angeordneten Kastenkörper (201), eine am Oberteil des Kastenkörpers (201) angeordnete Luftpumpe (202), ein an dem Boden des inneren Hohlraums des Kastenkörpers (201) angeordnetes Lagergestell (203) und einen an dem Boden des Kastenkörpers (201) angeordneten Ascheaustragszylinder (204) umfasst; und eine Wärmeableitungskomponente (300), die im Inneren des Kastenkörpers (201) angeordnet ist und einen auf einer Seite der Innenwand des Kastenkörpers (201) angeordneten Motor (301) und einen im Inneren des Kastenkörpers (201) angeordneten Befestigungsrahmen (302) umfasst.

Controlar variables en recipientes a presion de calderas.

Un método para controlar la tensión en un recipiente a presión de caldera, comprende limitar el diámetro de un tambor (10) deI recipiente a presión de caldera y precalentar por lo menos una porción de la pared (12) deI tambor (10). Limitar el diámetro del tambor (10) permite que la presión en el tambor (10) se incremente para una tensión mecánica dada. Además, precalentar la pared (12) del tambor (10) reduce tensiones pico inducidas térmicamente en un material del cual se fabrica el tambor (10).

Controlling variables in boiler pressure vessels

A method of controlling stress in a boiler pressure vessel comprises limiting the diameter of a drum (10) of the boiler pressure vessel and preheating at least a portion of the wall (12) of the drum (10). Limiting the diameter of the drum (10) allows pressure in the drum (10) to be increased for a given mechanical stress. Furthermore, preheating the wall (12) of the drum (10) reduces peak thermally induced stresses in a material from which the drum (10) is fabricated.

Controlling variables in boiler pressure vessels

A method of controlling stress in a boiler pressure vessel comprises limiting the diameter of a drum (10) of the boiler pressure vessel and preheating at least a portion of the wall (12) of the drum (10). Limiting the diameter of the drum (10) allows pressure in the drum (10) to be increased for a given mechanical stress. Furthermore, preheating the wall (12) of the drum (10) reduces peak thermally induced stresses in a material from which the drum (10) is fabricated.

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Exhaust-relief for steam-vehicles.

Verfahren zur Regelung einer Dampfkraftanlage

Funzionamento perfezionato di turbine a vapore a basso livello di carico

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Procédé pour démarrer et mettre en charge les turbines à vapeur

Temperature*pressure adjustable fluid feeder

Procédé d'exploitation d'installations de générateurs de vapeur

一种汽轮机组电力冷端系统性能监测装置

本实用新型公开了一种汽轮机组电力冷端系统性能监测装置，包括支撑组件，包括支撑板，以及设置于所述支撑板顶部的连板；除尘组件，包括设置于所述连板一侧的箱体、设置于所述箱体顶部的风泵、设置于所述箱体内腔底部的放置架，以及设置于所述箱体底部的出灰筒；以及，散热组件，设置于所述箱体的内部，包括设置于所述箱体内壁一侧的电机，以及设置于所述箱体内部的固定框。本实用新型所述装置解决了现有的一些汽轮机组电力冷端系统性能监测装置在使用时，由于长时间使用过程中，监测装置内部产生较高的温度，以及较多的灰尘，严重影响了内部元件的正常使用，导致了监测效果不够理想，影响了数据采集的问题。