Method of testing air tightness of sealed lash adjuster

Object To provide a method of testing air tightness of a sealed lash adjuster having a body and a plunger in the course of assembling the lash adjuster to confirm the sealability of a first and a second seal member respectively installed on the slidable portions of the body and the plunger. Means for Achieving the Object The method comprises, in the course of assembling the sealed lash adjuster, steps of: inserting, into the body ( 10 ) having on the slidable portion thereof a seal member ( 19 ), the plunger ( 20 ) having in the side wall thereof a lower open end and an oil recycling hole ( 27 ) in the side wall thereof and provided with a seal member ( 29 ); supplying pressurized air to the plunger ( 20 ) through a port ( 21 ) formed in the top end of the plunger ( 20 ); testing the internal air tightness of the sealed lash adjuster (or sealability of the seal member 29) with the lower end of the plunger ( 20 ) held in sliding contact with the seal member ( 29 ) and with the oil recycling hole ( 27 ) closed when the plunger ( 20 ) is inserted in the body ( 10 ); opening the oil recycling hole ( 27 ) and further inserting the plunger ( 20 ) in the body ( 10 ) if the seal member ( 29 ) is verified to have satisfactory sealability; and testing the internal air tightness of the lash adjuster to test the sealability of the seal member ( 19 ) with the seal member ( 19 ) positioned in sliding contact with the body ( 10 ) and with the oil recycling hole ( 27 ) positioned not to reach the seal member ( 29 ).

Test apparatus for a threaded joint for oil country tubular goods

An apparatus 1 for evaluating the performance of a threaded joint for oil country tubular goods using a first steel pipe P 1 and a second steel pipe P 2 has a base 2 which holds a first steel pipe P 1 in an upright position with an upper end of the first steel pipe P 1 extending above the base and the remainder partly disposed under ground. A support member 3 mounted on the base 2 extends alongside the first steel pipe P 1 . A second steel pipe P 2 is suspended above the first steel pipe P 1 by a suspending mechanism 4 . A threaded joint can be connected and disconnected by first and second tongs 5 and 6 which rotate the second steel pipe P 2 with respect to the first steel pipe P 1 . A stabilizer 7 mounted on the support member 3 can limit the radius of gyration of the second steel pipe P 2.

Tubular joint

A tubular joint comprising: is provided. The tubular joint comprises first and second tubular members, a metallic seal ring between the tubular members and having sealing surfaces designed to mate with corresponding sealing surfaces of the tubular members to form a primary seal, an additional seal provided between the tubular members radially outwardly of the primary seal, a fluid channel having an outlet opening in an end surface of the first tubular member radially outwardly of said primary seal and radially inwardly of said additional seal, and annular seal members interposed between the seal ring and the tubular members radially outwardly of the primary seal and radially inwardly of said outlet opening and designed to allow fluid flow past the seal members in a radial direction inwards and to prevent fluid flow past the seal members in a radial direction outwards.

Device for measuring impermeability of the sealing means of a filter cartridge and process thereof

A device for measuring permeability of a filter cartridge seal includes a blocking member for blocking an input to the filter cartridge and a housing for tightening the seal. A removable chamber wall is configured to form a sealed chamber with the housing and the blocking member. Pressure in the sealed chamber is varied to test the seal and to detect leaks.

DISPOSABLE CASSETTE CONDITIONING SYSTEM AND METHOD

A medical fluid delivery system comprises: (i) a medical fluid delivery machine including a pneumatic manifold having pump and valve actuation areas and a pumping gasket overlaying the pump and valve actuation areas, sources of positive and negative pneumatic pressure, plural pneumatic valves located between the pneumatic sources and the pump and valve actuation areas, and a control unit in operable communication with the plural pneumatic valves; and (ii) a disposable cassette including a fluid pump chamber that aligns with the pump actuation area when the disposable cassette is mated with the pneumatic manifold, the disposable cassette including sheeting overlaying the fluid pump chamber, wherein the control unit is configured to operate the pneumatic valves to perform a conditioning routine that moves the pumping gasket and the cassette sheeting while mated in an attempt to remove small air pockets from between the pumping gasket and the cassette sheeting. 1. A medical fluid delivery system comprising: a pneumatic manifold having pump and valve actuation areas and a pumping gasket overlaying the pump and valve actuation areas,', 'a source of positive pneumatic pressure,', 'a source of negative pneumatic pressure,', 'plural pneumatic valves located between the sources of positive and negative pneumatic pressure and the pump and valve actuation areas, and', 'a control unit in operable communication with the plural pneumatic valves; and, 'a medical fluid delivery machine including'}a disposable cassette including a fluid pump chamber that aligns with the pump actuation area when the disposable cassette is mated with the pneumatic manifold, the disposable cassette including sheeting overlaying the fluid pump chamber, whereinthe control unit is configured to operate the pneumatic valves to perform a conditioning routine that moves the pumping gasket and the cassette sheeting while mated in an attempt to remove small air pockets from between the pumping gasket and the ...

TEST DEVICE FOR HYPERBARIC TESTING OF A PART OF A SUBSEA DEVICE AND METHOD

A test device for hyperbaric testing of a part of a subsea device is provided. The test device includes a test pot configured to provide a test chamber around of a part of the subsea device that is to be tested. A mount of the test device is configured to attach the test pot to the subsea device such that the test pot is affixed to the subsea device and can be pressurized without becoming detached from the subsea device during testing. The test device further includes at least one seal for sealing the test device to the subsea device such that the test chamber is sealed from the surrounding environment. A pressure port is further provided for pressurizing a medium in the test chamber to a test pressure that is relatively higher than an ambient pressure in the surrounding environment. 1. A test device for hyperbaric testing of a part of a subsea device , comprising:a test pot configured to provide a test chamber around a part of the subsea device that is to be tested;a mount configured to attach the test pot to the subsea device to affix the test pot to the subsea device, the test pot being pressurizable without becoming detached from the subsea device during testing;at least one seal to seal the test device to the subsea device such that the test chamber is sealed from the surrounding environment; anda pressure port to pressurize a medium in the test chamber to a test pressure that is relatively higher than an ambient pressure in the surrounding environment.2. The test device of claim 1 , wherein the test pot comprises a rigid housing made of metal and including at least partly a cylindrical shape claim 1 , wherein the housing is configured to be mounted over the part of the subsea device that is to be tested and to enclose the part inside the test chamber.3. The test device of claim 1 , wherein the test pot includes the at least one seal claim 1 , the at least one seal being configured and arranged to provide sealing against a housing part or flange part of the ...

APPARATUS, SYSTEM AND METHOD FOR MONITORING SEALING DEVICES

The invention in provides an apparatus, system and method of monitoring a sealing device. The apparatus comprises an inlet configured to receive pressurised fluid from a seal activation fluid pressure source and an outlet configured to be connected to a sealing device to deliver pressurised fluid to a seal element of the sealing device to energise the sealing device in use. A fluid barrier is disposed between the inlet and the outlet and is operable to isolate the inlet from the outlet. A fluid chamber is defined between the fluid barrier and the outlet, and the apparatus comprises means for detecting a change in condition in the fluid chamber indicative of a change in volume of the seal element of the sealing device. 1. An apparatus for monitoring a condition of a sealing device , the apparatus comprising:an inlet configured to receive pressurised fluid from a seal activation fluid pressure source;an outlet configured to be connected to a sealing device to deliver pressurised fluid to a seal element of the sealing device to energise the sealing device in use;a fluid barrier disposed between the inlet and the outlet and operable to isolate the inlet from the outlet, wherein a fluid chamber is defined between the fluid barrier and the outlet; andmeans for detecting a change in condition in the fluid chamber indicative of a change in volume of the seal element of the sealing device.2. The apparatus according to claim 1 , wherein the detected change in condition in the fluid chamber is a change in volume of the fluid chamber claim 1 , and wherein the fluid chamber is operable to change in volume in response to a change in volume of the seal element.3. The apparatus according to claim 2 , wherein the change in volume of the fluid chamber is measured claim 2 , and a change in volume of the seal element is determined from the measured change in volume of the fluid chamber.4. The apparatus according to claim 1 , wherein the fluid chamber comprises a piston chamber claim 1 ...

Method for forming pressure-testable field joint between pre-insulated pipe sections, and piping system with pressure-testable field joint

A method for forming a field joint between pipe sections is provided, preferably for pre-insulated pipe sections containing a carrier pipe surrounded by insulation and an outer jacket. The carrier pipes are joined, and an air tube is positioned so that its first end is within the joint area, and its second end extends beyond the joint area. A sleeve is sealed over the joint area, joining the jackets, with the sleeve positioned to cover the first end but not the second end of the tube. Air is injected into the tube to pressurize the cavity within the jacket, and the tube bore is sealed to allow air pressure testing. If the testing shows no loss of air pressure, the bore of the tube is sealed permanently to complete the seal on the field joint. Also provided is a piping system having a field joint formed by this method.

METHOD OF INSPECTING PIPE JOINTS FOR USE IN A SUBSEA PIPELINE

A method of inspecting a pipe joint for use in a subsea pipeline and a method of manufacturing a pipe joint for use in a subsea pipeline employing said inspection method are disclosed, the inspection method comprising the steps of: receiving a pipe joint; measuring the ovality of the pipe joint to obtain ovality data; determining that the ovality data does not exceed a predetermined maximum pipe joint ovality value; and carrying out external pressure collapse tests on a ring cut from one end of the received pipe joint, resulting in data representative of the hydrostatic collapse pressure of said pipe joint for use in confirming that the pipe joint is suitable for its intended use. 1. A method of inspecting a pipe joint for use in a subsea pipeline , the method comprising the steps of:receiving a pipe joint;measuring the ovality of the pipe joint to obtain ovality data;determining that the ovality data does not exceed a predetermined maximum pipe joint ovality value; andcarrying out external pressure collapse tests on a ring cut from one end of the received pipe joint, resulting in data representative of the hydrostatic collapse pressure of said pipe joint for use in confirming that the pipe joint is suitable for its intended use.2. The method according to claim 1 , wherein the pipe joint received has an internal diameter and a wall thickness based on: required fluid flow through the pipeline; the hydrostatic pressure corresponding to a depth at which the pipe joint is to be used safely; and claim 1 , the predetermined maximum pipe joint ovality.3. The method according to claim 2 , wherein further including a step of applying or adding a safety factor to the depth at which the pipe joint is to be used.4. The method according to claim 3 , wherein the safety factor is a coefficient.5. The method according to claim 3 , wherein the safety factor is from 1.0 to 1.2.6. The method according to claim 1 , wherein the external pressure tests comprises the steps of:cutting a ...

Wafer processing apparatus and control method thereof

A wafer processing apparatus includes a vacuum chuck on which a wafer is seated, a ring cover installed on a circumferential portion of the vacuum chuck, a medium supply part connected to the vacuum chuck to supply an inspection medium to the vacuum chuck, and a sealing ring which is installed in the vacuum chuck to support the wafer and into which the inspection medium supplied to the vacuum chuck is introduced.

Gas and/or chemical liquid indicator

Described herein is an ammonia compound indicator comprising an adhesive and a chemochromic compound disposed therein. Also described are methods of making the aforedescribed elements and methods for indicating the presence of ammonia.

METHOD FOR DETECTING LEAKS IN AIRCRAFT WINGS

A method is provided for detecting leaks in the wing of an aircraft prior to the fitting of the wing to the rest of the aircraft. A wing sealing assembly for sealing the wing of an aircraft so that the wing may be leak-tested is also described. 1. A method for detecting leaks in an aircraft wing , the method comprising:(i) Providing an aircraft wing having at one end a wing tip and at the other end a wing root, the wing tip defining an outboard position and the wing root defining an inboard position, and at least one rib disposed between the wing root and wing tip, there being a rib closest to the wing root;(ii) Forming a gas-tight seal inboard of the rib closest to the wing root;(iii) Introducing a gas into the aircraft wing; and(iv) Sensing for leaks in the aircraft wing.2. A method according to wherein the step of introducing a gas into the aircraft wing causes the formation of a gas-tight seal.3. A method according to comprising forming a seal against one or more wing skins and/or against one or more spars.4. A method according to comprising forming a seal against an inner and/or outer surface of an upper wing skin and forming a seal against an inner and/or outer surface of a lower wing skin.5. A method according to comprising forming a seal against an inner and/or outer surface of a first spar and forming a seal against an inner and/or outer surface of a second spar.6. A method according to comprising forming a seal on an outer surface of the wing (but not on the corresponding inner surface of the wing) at a first site on the wing and forming a seal on an inner surface of the wing (but not on the corresponding outer surface of the wing) at a second site on the wing.7. A method according to comprising forming a seal on an outer surface of the wing and on the corresponding inner surface of the wing at a first site on the wing and optionally the end of the wing claim 1 , and forming a seal on one of the inner and outer surfaces of the wing (but not on the ...

Erosion resistant flow conduit

A particulate-accommodating fluid flow directing apparatus comprises a failure detection housing containing a flow directing insert, the housing serving as a pressure boundary; failure at any location along the insert being detectable by means associated with the housing. The insert can be manufactured of erosion resistant materials, including non-ductile materials such as ceramics. The insert is sealed to the housing at an inlet and a discharge forming a pressure chamber between the insert and housing. The pressure chamber can be maintained at a pad pressure complementary to the process pressure, the pad pressure being maintained and monitored for indication of insert failure.

SUBSTRATE SEAL TEST METHOD AND APPARATUS

A method for testing whether a sealing method is effective may include the steps of testing a flow characteristic of the substrate, sealing the substrate, re testing the flow characteristic of the substrate, then comparing the before and after flow characteristics of the substrate to determine whether the sealing step was effective or to quantify a sealing effectiveness to the sealing step. 120-. (canceled)21. A method of testing effectiveness of a sealing procedure on a structure , the method comprising the steps of:forming a first drill hole in the concrete structure, the first drill hole extending into the concrete structure from the first surface, the first drill hole having an end at the first surface;forming a test drill hole in the concrete structure in spaced relation to the first drill hole, the test drill hole extending into the concrete structure from the first surface, the test drill hole having an end at the first surface spaced from the end of the first drill hole;determining a baseline liquid flow characteristic of a test liquid by directing the test liquid into the test drill hole;plugging the test drill hole with a plug so that filling substance does not enter the test drill hole when the filling substance is injected into the first drill hole;injecting a filling substance into the first drill hole under pressure so that the filling substance seeps into the concrete structure to fill channels in the concrete structure;after the injecting step, removing the plug from the test drill hole;following hardening of the filling substance in the channels of the concrete structure and the removing step, determining a quality liquid flow characteristic by directing the test liquid into the test drill hole.22. The method recited in claim 21 , further comprising the step of comparing the baseline liquid flow characteristic to the quality liquid flow characteristic to determine an effectiveness of the injecting step.23. The method of wherein the step of forming ...

PRESSURE-ADJUSTABLE AUXILIARY CONTROL SYSTEM FOR HIGH-PRESSURE GAS SEALING DETECTION

A pressure-adjustable auxiliary control system for high-pressure gas sealing detection includes: a high-pressure chamber environment monitoring unit configured to construct high-pressure test gas sealing environment and to test sealing performance of a sealing member; a first gas pipeline divided into two branches, of which one branch is connected to the high-pressure chamber environment monitoring unit as a first gas replacement path; a second gas pipeline which is connected to a test gas pressurization path together with the other branch of the first gas pipeline, where a first booster pump processing unit and a second booster pump processing unit are sequentially arranged in the test gas pressurization path for pressurizing the test gas, and are connected to the high-pressure chamber environment monitoring unit; a system air control module configured for control of respective air control valves; and a booster pump air control module and a driving air source preprocessing unit.

PRESSURE SEAL WITH BUILT IN TESTING SYSTEM

A connector is described, including a housing including an internal volume, a port in the housing for receiving a conduit and providing access to the internal volume, a sealing arrangement for sealing the internal volume in the housing and a seal integrity test system including a sensor coupled to the housing. The seal integrity test system is configured to provide a measurement based on the pressure inside the internal volume of the housing to establish the integrity of the sealing arrangement. 1. A connector , comprising:a housing comprising an internal volume;a port in the housing for receiving a conduit and providing access to the internal volume;a sealing arrangement for sealing the internal volume in the housing; anda seal integrity test system comprising a sensor coupled to the housing;the seal integrity test system being configured to provide a measurement based on the pressure inside the internal volume of the housing to establish the integrity of the sealing arrangement.2. The connector according to claim 1 , wherein the seal integrity test system is configured to detect the level of pressure in the internal volume of the housing.3. The connector according to claim 2 , wherein the seal integrity test system is configured to detect the level of pressure at multiple locations in the internal volume of the housing.4. The connector according to claim 1 , wherein the housing comprises a coupling arrangement by which at least a part of the seal integrity test system is fitted thereto.5. The connector according to claim 1 , wherein the sealing arrangement compartmentalizes the internal volume into a plurality of compartments.6. The connector according to claim 1 , wherein the coupling arrangement is located on an external surface of the housing.7. The connector according to claim 6 , wherein the coupling arrangement comprises a coupling area extending circumferentially around the housing.8. The connector according to claim 6 , wherein the sealing arrangement ...

Filling Implantable Medical Devices for Leak Checking

A method for introducing an analyte gas into a cavity of an implantable medical device includes analyzing gas that exits the cavity through an outlet in communication with the cavity and introducing an analyte gas into the cavity via an inlet in communication with the cavity until the composition of the gas exiting the cavity comprises a predetermined percent or amount of the analyte gas. The inlet and outlet may be sealed, and the device may be leak tested.

SEALING SYSTEM HAVING LEAKAGE SENSING FUNCTION

One embodiment of the present invention relates to a sealing system having a leakage sensing function. A leakage sensing unit is arranged in a sealed space which is formed between sealing members of a sealing device body so as to sense, in real time, whether the sealing members are leaking, wherein a sensing value of the leakage sensing unit can be transmitted to the outside by using a communication unit. 1. A sealing system having a leakage sensing function , the sealing system comprising:a sealing device body that includes a housing disposed to enclose a drive shaft, a plurality of sealing members spaced apart from each other between the housing and the drive shaft to seal a space between the housing and the drive shaft, and a retaining ring member disposed between the sealing members; anda leakage sensing unit disposed in a sealed space formed between the sealing members to sense whether the sealing members are leaking,wherein a sensing hole is formed in the housing and the retaining ring member to communicate with the sealed space, andan extension space is formed on at least one of an inner circumferential surface of the housing or an outer circumferential surface of the retaining ring member to extend from the sensing hole and communicate with the sensing hole.2. The sealing system of claim 1 , wherein the sealing members include at least one of mechanical seals claim 1 , lip seals claim 1 , radial shaft seals claim 1 , o-rings claim 1 , oil seals claim 1 , shaft seals claim 1 , or rubber rings.3. The sealing system of claim 1 , wherein the extension space includes a ring-shaped groove formed in a circumferential direction thereof.4. The sealing system of claim 1 , wherein a ring-shaped packing member is provided on at least one side of the extension space to be in close contact with the outer circumferential surface of the retaining ring member and the inner circumferential surface of the housing.5. The sealing system of claim 1 , wherein the extension space ...

System sealing test device for insulating two mediums in a sealed manner

Device for testing the sealing of at least one system for insulating two mediums in a sealed manner, the system including a flange and a sealed door mounted in the flange, the test device including a casing including an inflatable seal intended to contact, in the inflated state, with the system and to ensure a sealing enabling the definition of a test volume between the system and the casing, a pneumatic pump and a pneumatic circuit configured to connect, in a first step, the pump to the inflatable seal such that the pump inflates the inflatable seal, and in a second step the pump to the test volume such that the pump generates in the test volume a pressure at a given value, and sensor for measuring the pressure in the test volume.

SEAL STATE DETECTING DEVICE AND SEAL STATE DETECTING METHOD

This seal state detection device includes a plurality of part case members including a cylinder facing part and a rod facing part and are aligned in a circumferential direction of a cylinder by causing the cylinder facing part to face the cylinder and the rod facing part to face a rod so that a housing chamber for housing a part of the cylinder and a part of the rod is formed between the cylinder facing part and the rod facing part. The cylinder facing part includes a seal part which contacts with the cylinder. The seal part includes a protruding part formed at one end and a recessed part formed at the other end in the circumferential direction of the cylinder. The protruding part and the recessed part are fitted to each other when the plurality of part case members are aligned in the circumferential direction of the cylinder. 1. A seal state detection device detecting a seal state of a seal member of a cylinder device including:a cylinder in which a working fluid is sealed;a rod protruding from at least one end of the cylinder to be extendable and contractible; andthe seal member provided between the cylinder and the rod,the seal state detection device comprising:a plurality of part case members including a cylinder facing part and a rod facing part and disposed to be aligned in a circumferential direction of the cylinder by causing the cylinder facing part to face the cylinder and the rod facing part to face the rod so that a housing chamber for housing a part of the cylinder and a part of the rod is formed between the cylinder facing part and the rod facing part, whereinthe cylinder facing part includes a seal part which comes into contact with the cylinder,the seal part includes a protruding part formed at one end and a recessed part formed at the other end in the circumferential direction of the cylinder, andthe protruding part and the recessed part facing in the circumferential direction of the cylinder are fitted to each other when the plurality of part case ...

SUBSTRATE SEAL TEST METHOD AND APPARATUS

A method for testing whether a sealing method is effective may include the steps of testing a flow characteristic of the substrate, sealing the substrate, re testing the flow characteristic of the substrate, then comparing the before and after flow characteristics of the substrate to determine whether the sealing step was effective or to quantify a sealing effectiveness to the sealing step. 120-. (canceled)21. A method of testing effectiveness of a sealing procedure on a structure , the method comprising the steps of:forming a first drill hole in the concrete structure, the first drill hole extending into the concrete structure from the first surface, the first drill hole having an end at the first surface;forming a test drill hole in the concrete structure in spaced relation to the first drill hole, the test drill hole extending into the concrete structure from the first surface, the test drill hole having an end at the first surface spaced from the end of the first drill hole;determining a baseline flow rate and a baseline pressure of a test liquid by directing the test liquid into the test drill hole;plugging the test drill hole with a plug so that filling substance does not enter the test drill hole when the filling substance is injected into the first drill hole;injecting a filling substance into the first drill hole under pressure so that the filling substance seeps into the concrete structure to fill channels in the concrete structure;after the injecting step, removing the plug from the test drill hole;following hardening of the filling substance in the channels of the concrete structure and the removing step, determining a quality flow rate and a quality pressure by directing the test liquid into the test drill hole.22. The method recited in claim 21 , further comprising the step of comparing the baseline flow rate and the baseline pressure to the quality flow rate and the quality baseline pressure to determine an effectiveness of the injecting step.23. The ...

Mechanical Seal Testing

A mechanical seal testing system includes a mounting ring and a testing table. The mounting ring includes a first side configured to couple to a mechanical seal, the mechanical seal configured to couple to an oil pump, and a second side configured to couple to a stuffing box, the stuffing box configured to couple to a water pump. The testing table includes a surface configured to collect fluid leaked by the mechanical seal or the stuffing box. The mounting ring is coupled to the surface of the testing table.

SYSTEM AND METHOD FOR DETECTING HIGH PRESSURE SEAL LEAKS IN CHROMATOGRAPHIC PUMPS

The present disclosure relates to techniques for detecting leaks in a pump. A compressed fluid, such as compressed CO, is provided through a first channel formed within a pump head. The compressed fluid within the first channel is in contact with at least a portion of a pump piston, and the first channel is substantially sealed using a fluid seal positioned around a portion of the pump piston. A wash fluid is pumped into a second channel formed within a wash seal housing associated with the pump head using a fluid pump. The wash fluid within the second channel surrounds a portion of the pump piston and is separated from the first channel by the fluid seal. A flow rate of fluid exiting the wash seal housing via the second channel is measured, and the existence of a leak is determined based on the measured flow rate. 1. A method for detecting leaks within a pump comprising:providing a compressed fluid through a first channel formed within a pump head, wherein the compressed fluid within the first channel is in contact with at least a portion of a pump piston and the first channel is substantially sealed using a fluid seal positioned around a portion of the pump piston;providing a wash fluid into a second channel formed within a wash seal housing associated with the pump head using a fluid pump, wherein the wash fluid within the second channel surrounds a portion of the pump piston and is separated from the first channel by the fluid seal;measuring a flow rate of fluid exiting the wash seal housing via the second channel; anddetermining existence of a leak in the fluid seal based on the measured flow rate.2. The method of claim 1 , wherein the compressed fluid includes compressed COfor a CO-based chromatography or extraction system.3. The method of claim 1 , wherein determining the existence of a leak in the fluid seal includes comparing the measured flow rate exiting the wash seal housing against a flow rate threshold value.4. The method of claim 1 , wherein ...

Actuator predictive system

An actuator system includes a piston-cylinder arrangement including a piston that is movable with respect to a cylinder. A first flow path is in fluid communication with the piston-cylinder arrangement and a second flow path is in fluid communication with the piston-cylinder arrangement. A control system is operable to fluidly connect the first flow path to a source of high-pressure fluid and to connect the second flow path to a drain to move the piston in a first direction. A pressure sensor is fluidly connected to the first flow path and is operable to measure sufficient pressure data during the movement of the piston to generate a pressure versus time curve. The control system is operable to compare the generated pressure versus time curve to a known standard pressure versus time curve stored in the control system to determine the condition of the piston-cylinder arrangement.

SEAL VACUUM CHECK TOOL

Aspects of the disclosure are directed to installing a test assembly on an aircraft engine, connecting a vacuum source to at least one port of the test assembly, engaging the vacuum source, and based on determining that a vacuum is maintained in an amount greater than a threshold, determining that a plurality of seals are present in the engine. 1. A method comprising:installing a test assembly on an aircraft engine;connecting a vacuum source to at least one port of the test assembly;engaging the vacuum source; andbased on determining that a vacuum is maintained in an amount greater than a threshold, determining that a plurality of seals are present in the engine.2. The method of claim 1 , wherein the seals are associated with a tube that is used to convey a fluid.3. The method of claim 2 , wherein the fluid comprises oil.4. The method of claim 2 , wherein the tube is a double-wall tube comprising a first wall that is exterior to a second wall.5. The method of claim 1 , wherein the seals comprise a first seal that provides sealing in an axial direction with respect to the engine.6. The method of claim 5 , wherein the seals comprise a second seal that provides sealing in a radial direction with respect to the engine.7. A test assembly configured to determine whether a plurality of seals are present in an aircraft engine claim 5 , comprising:a first o-ring;a second o-ring;a cap; anda port configured to couple to a vacuum source.8. The test assembly of claim 7 , wherein the first o-ring is configured to provide sealing with respect to an external environment.9. The test assembly of claim 7 , wherein the second o-ring is configured to provide for sealing with respect to a portion of a tube that is internal to a wall.10. The test assembly of claim 7 , wherein at least one of the first o-ring and the second o-ring is made of fluorocarbon.11. The test assembly of claim 7 , wherein the cap is made of metal.12. The test assembly of claim 7 , wherein the cap is made of at ...

In line inspection strain device method and apparatus for performing in line joint inspections

A system and method to inspect and monitor stress, strain, leakage, corrosion and disjointing of rigid metallic and non-metallic connector fittings used to join sections of partially metallic or non-metallic flexible reinforced thermoplastic pipe, RTP, as well as inspecting and monitoring the structural health of the RTP in the area of those connections with one or more casement shields concentrically mounted on and adhered with liquid type epoxy to the outer surface of the RTP at or adjacent to the connection with a rigid connector fitting, monitoring sensors installed in the casement shields, a management system for receiving, processing and transmitting information gathered from the sensors via SCADA or other computerized means for monitoring and regulating strain impact, determining stress level and direction, potential leaks and temperature spikes at connector fitting areas, and a mechanism for acoustical detection or simulation, with a computer system for receiving, processing and transmitting information gathered from sensors on the casement shields. The system and method is capable of safely monitoring the flexible rRTP's function at rigid connector fittings both separately and in conjunction with an In Line Inspection system for the entire pipeline.

VACUUM SYSTEM PIPE COUPLINGS

A vacuum system pipe coupling includes a first coupling member and a second coupling member. The vacuum system pipe coupling has a seal system that is to be positioned to seal between the first and second coupling members and a securing system to releasably secure the first coupling member to the second coupling member. The seal system has an inner seal element and an outer seal element spaced from the inner seal element. The first coupling member is provided with a flow passage configured to conduct a pressurised gas to a space between the inner and outer seal elements to shield the outer seal element from fluid flowing through the pipe coupling in the event of failure of the inner seal element. 1. A vacuum system pipe coupling comprising:a first coupling member;a second coupling member;a seal system to be positioned between said first and second coupling members to seal between said coupling members; anda securing system to releasably secure said first coupling member to said second coupling member,said seal system comprising an inner seal element and an outer seal element and said first coupling member being provided with a flow passage configured to conduct a pressurised gas to a space that in use is provided between said inner and outer seal elements to shield said outer seal element from fluid flowing through said pipe coupling in the event of failure of said inner seal element.2. The vacuum system pipe coupling as claimed in claim 1 , wherein said inner and outer seal elements are separated by a spacer that is configured to be received in said space.3. The vacuum system pipe coupling as claimed in claim 2 , wherein said spacer is integral with at least one of said inner and outer seal elements.4. The vacuum system pipe coupling as claimed in claim 2 , wherein said inner seal element has a width claim 2 , said outer seal element has a width and said spacer comprises at least one portion having a width less than the respective said widths of said inner and ...

STEAM TURBINE SEAL PACKING PERFORMANCE MONITORING SYSTEM USING MAGNETIC FIELD COMMUNICATION

In a steam turbine seal packing performance monitoring system, steam pressure is measured by installing a pressure sensor inside a seal packing for preventing steam from leaking, so that pressure information can be transmitted using magnetic field communication in order to externally monitor seal packing performance. The system includes a seal packing unit that is installed on a rotor shaft and has a plurality of seal packs disposed along an axial direction of the rotor shaft; a pressure sensor installed inside the seal packing unit to detect a pressure of steam leaked from inside the seal packing unit and to transmit a magnetic field signal by converting a detection signal indicative of the detected pressure into the magnetic field signal; and an adapter for receiving the magnetic field signal, converting the received magnetic field signal into pressure data, and calculating a leakage amount of steam based on the pressure data. 1. A system for monitoring performance of a seal packing in a steam turbine , the system comprising:a seal packing unit installed on a rotor shaft of the steam turbine, the seal packing unit including a plurality of seal packs disposed along an axial direction of the rotor shaft;a pressure detection unit installed inside the seal packing unit and configured to detect a pressure of steam leaked from inside the seal packing unit and to transmit a magnetic field signal outside the seal packing unit by converting a detection signal indicative of the detected pressure into the magnetic field signal; andan adapter for receiving the magnetic field signal, converting the received magnetic field signal into pressure data, and calculating a leakage amount of steam based on the pressure data.2. The system of claim 1 , wherein the pressure detection unit is installed between adjacent seal packs among the plurality of seal packs.3. The system of claim 1 , wherein the pressure detection unit is installed in at least one of a steam passage through which ...

METHOD FOR MONITORING HEALTH OF A SEAL

There is disclosed a method of monitoring the health of an abradable seal located on a piston of an actuator, the method comprising the steps of: (i) measuring an initial velocity of said actuator piston while said actuator is maintained in a passive condition at an initial time; (ii) operating said actuator; (iii) measuring a subsequent velocity of said actuator piston while said actuator is maintained in a passive condition at a subsequent time; (iv) repeating steps (ii)-(iii) and either: recording or outputting the measured subsequent velocities over time; or determining a health status of said actuator when said subsequent velocity has increased above a predetermined amount. 1. A method of monitoring the health of an abradable seal located on a piston of an actuator , the method comprising the steps of:(i) measuring an initial velocity of said actuator piston while said actuator is maintained in a passive state or condition at an initial time;(ii) operating said actuator;(iii) measuring a subsequent velocity of said actuator piston while said actuator is maintained in a passive state or condition at a subsequent time; recording or outputting the measured subsequent velocities over time; or', 'determining a health status of said actuator when said subsequent velocity has increased above a predetermined amount., '(iv) repeating steps (i)-(iii) and either2. A method as claimed in claim 1 , wherein step (i) and/or (iii) comprises setting up said actuator in a passive state or condition prior to measuring said initial velocity.3. A method as claimed in claim 2 , wherein said actuator comprises a control valve claim 2 , and said step of setting up said actuator in a passive state or condition comprises setting said control valve into its null position such that there is no flow of fluid into or out of said actuator and movement of said piston is primarily caused by flow of fluid across the abradable seal.4. A method as claimed in claim 2 , wherein said step of setting ...

Horizontal high speed testing device for spiral seal of horizontal cone bit bearing

A horizontal high-speed testing device for a spiral seal of a cone bit bearing is provided. The device comprises a shaft, a spiral sleeve and a cone. The spiral sleeve is in threaded connection to the cone. Sealing threads are provided on an inner diameter of the spiral sleeve. Both the spiral sleeve and the cone are sheathed on the shaft. By the testing device of the present invention, a spiral seal structure for a cone bit bearing is simulated, and the cone drives the spiral sleeve to rotate; the sand draining performance of the spiral seal can be tested in two ways, i.e., by measuring the time required to drain the sand-containing liquid and by measuring the weight of drained sand, so that the smooth production and application of spiral seal products can be assured.

Method and Device to Detect Fluid Leakage in a Joint Between Two Pipe Sections

A method is described to detect a fluid leakage in a joint area between two pipe sections () that are joined together to provide a continuous fluid-carrying pipeline, where a casing-formed joint element () with an inwardly protruding flange part () is inserted between the pipe sections (), the ends of which lie against sealing elements () at the oppositely directed flange surfaces, and a coupling body () on each side of the joint element () forms an engagement with respective pipe circumference surfaces () and is made to squeeze the pipe ends against each other via the joint element (). The method is characterised in that a second sealing element () that seals between the joint element (), and the pipe section surfaces () is set up at the pipe ends, and any fluid leakages past the two sealing systems () are monitored in a fluid channel system (), in connection to the joint element (), between the sealing systems () and which is set up by a radially formed ring-formed hollow space (), outside respective sealing elements () and defined between respective, oppositely directed flange surfaces () and the ends of the pipe sections () where the hollow space is fluid connected with another channel system () via the joint element and connected to a pressure sensor (P, ) that registers the pressure in the fluid channel system for alarms and the initiation of relevant actions. A device to carry out the method is also described. 11012202810122727606220171920ab. Method to detect a fluid leakage in a joint area between two pipe sections ( , ) that are joined together to provide a continuous fluid-carrying pipeline , where a casing-formed joint element () with an inwardly protruding ring-formed flange part () is inserted between the pipe sections ( , ) , the ends of which lie against sealing elements ( , ) at the oppositely directed flange surfaces , and a coupling body ( ,) on each side of the joint element () forms an engagement with respective pipe circumference surfaces ( , ) ...

Apparatus and method for on-line detection of leaky valves

SEAL-TESTING DEVICE FOR A DOUBLE-DOOR TRANSFER SYSTEM

Device for testing sealing of at least a part of a double-door sealed transfer system between two closed volumes, the system including a first flange and a and a second flange capable of being rigidly connected to one another, and a first door and a second door normally sealing openings respectively defined by the first and the second flanges, the device including a casing including a cavity provided with an opening, mechanical connection to a flange so that the cavity is closed by the flange and the door and an inflatable joint which, in the inflated state, is in contact with the flange and ensures a sealing allowing to verify the sealing between the flange and the door. 1. Sealing test device for testing sealing of at least a part of a double-door sealed transfer system between two closed volumes , said system comprising first and second flanges capable of being rigidly connected to one another , and first and second doors normally sealing openings respectively defined by the first and the second flanges , the seal-testing device being configured to separately test the sealing between the first flange and the first door and between the second flange and the second door , said device including a casing comprising a cavity provided with an opening , means for mechanical connection to at least one of the first and second flanges so that the cavity is closed by one of the first and second flanges and one of the first and second doors , and an inflatable joint intended to come , in the inflated state , in contact with one of the first and second flanges and to ensure a sealing allowing to verify the sealing between the first flange and the first door or the second flange and the second door.2. Seal-testing device according to claim 1 , including means for inflating the inflatable joint and means for controlling the pressure in the cavity.3. Seal-testing device according to claim 1 , wherein the casing includes a groove bordering the opening of the cavity and receiving ...

Arterial/venous simulator

The treating device for testing the sealing strength of a seal in a catheter sheath introducer comprises a port for receiving the introducer, a mechanism for supplying pulsating liquid to the inside of the introducer, and controls for controlling the upper and lower pressures of the fluid supplied to the introducer while observing the sealing strength of the seal, with or without an elongate, rod-like member received therein. The method for testing the sealing strength of the fluid seal within a catheter sheath introducer including the steps of providing a port for engaging said introducer; engaging the introducer to the port in a fluid tight manner; supplying a pulsating flow of fluid to the inside of the introducer; controlling the upper and lower pressure parameters for the flowing fluid; and observing the seal for leakage.

Steam turbine inlet bell seal inspection apparatus and method

An inspection apparatus (40) for in-situ leak testing of the bell seal (30) of a steam turbine (10). The apparatus includes a pair of inflatable bladders (48,52) for defining a sealed volume having the bell seal (30) as its only leakage path. The mass flow rate of pressurized air (70) at various pressures through the bell seal (30) is compared to the known flow rates through a similarly designed bell seal having various degrees of degradation. A camera (60) rotated by motor (62) between the bladders (48,52) provides an indication of the proper positioning of the inspection apparatus (40) and facilitates a visual inspection of the bell seal (30) and retaining nut (42). The inspection apparatus (40) may be inserted into an inlet to the turbine through a disassembled flow control valve without the need for any disassembly of the turbine.

Spigot pipe joint leakage test - with pressure medium introduction tube fitted to spigot and closed after test

The instrument is for leakage detection at pipe joints, in which the spigot end is provided with a pair of spaced grooves (3) to take packing rings (4) so that an annular chamber (6) is formed on assembly, and a small tube (7a) is fitted gas-tight to connect to the chamber. This tube can be connected to a test instrument so that any pressure drop in the annular chamber can be detected as an indication of a leak. On completion of the test, the small tube is closed gas-tight.

Pipe connection leakage testing method for concrete pipe, involves inserting hollow rod into discharge opening, where inlet opening is provided in area of upper end of hollow rod, such that fluid is only leaked over internal space of rod

The method involves introducing pressure fluid i.e. water, into an annular space (9) of a concrete pipe over a lateral inlet opening. The space is ventilated until discharging the fluid over a discharge opening (11). The opening (11) is closed, and the fluid is pressurized with pressure. A pressure drop is tested for evaluating leakage of a pipe connection. A hollow rod (13) is inserted into the opening (11) for closing the opening (11). Another inlet opening is provided in an area of upper end of the rod, such that the fluid is only leaked over an internal space of the rod. An independent claim is also included for a hollow rod comprising an inlet opening in an area of upper end of the rod.

Device for external pressurization of pipes

Work seal detection means, multi-section type annular seal space process equipment and method

本发明公开了一种在线密封检测装置，设置于两个部件的对接面，其包括：密封圈，其安装于两个部件的对接面内，该密封圈内设有周向的至少一腔室；进出气单元，其连通腔室的内部，该进出气单元上设置有至少一检测单元，该检测单元电连接处理器，用于检测进出气单元内的气体压力值和/或气体浓度值，然后将气体压力值和/或气体浓度值发送至处理器。本发明同时公开了一种多节式密封腔加工设备及在线密封检测方法。本发明与现有技术相比，可以实现对部件密封的在线检测，且可以同时对多节式密封腔加工设备的各工位进行检测，有效地提高对于多节式密封腔加工设备的密封检测效率。

Prediction system for a drive

FIELD: engines. SUBSTANCE: system is intended for predicting the state of the drive. Drive system includes a piston-cylinder structure, which includes a piston, which is movable relative to cylinder. First flow channel is in fluid communication with the said piston-cylinder structure, and the second flow channel is in fluid communication with the said piston-cylinder unit. Control system can provide fluid communication of the said first flow channel with the high pressure fluid source and fluid communication of the said second flow channel with the drain line for piston movement in the first direction. Pressure sensor in fluid communication with the first flow channel and is configured to measure the corresponding pressure data during piston movement to generate a pressure vs. time curve. Said control system is configured to compare the generated pressure vs. time curve with the known standard pressure vs. time curve stored in the said control system to determine the state of piston-cylinder unit. EFFECT: technical result: improved reliability of the drive system. 17 cl, 17 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F15B 19/00 (11) (13) 2 600 200 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014146622/06, 19.04.2013 (24) Дата начала отсчета срока действия патента: 19.04.2013 (72) Автор(ы): ТАБОР Кент (US) (73) Патентообладатель(и): ТАБОР Кент (US) Приоритет(ы): (30) Конвенционный приоритет: R U 20.04.2012 US 61/636,431; 15.03.2013 US 13/838,253 (43) Дата публикации заявки: 10.06.2016 Бюл. № 16 (56) Список документов, цитированных в отчете о поиске: SU 1506184 A1, 07.09.1989;SU 1506184 A1, 07.09.1989;SU 1267070 A1, 30.10.1986;JP 07076036 A, 20.03.1995;JP 2004-205022 A, 22.07.2004. SU 1590708 A1, 07.09.1990. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 20.11.2014 2 6 0 0 2 0 0 (45) Опубликовано: 20.10.2016 Бюл. № 29 US 2013/037393 (19.04.2013) C 2 C 2 (86) Заявка PCT: (87) ...

Sensorized sealing system

本发明涉及一种包括密封件(110)的密封系统(100)，该密封件将液体(105)保持在两个同心安装并且可相对旋转的部件(120，130)之间的空间中。根据本发明，密封系统包括至少一个磁弹性共振传感器(140，180)，用来基于所探测到的至少一个传感器的共振频率、测量与被密封液体(105)相关的至少一个感兴趣参数。

Method for assessing tightness and integrity of system of valves of microfluid system

FIELD: biotechnology. SUBSTANCE: group of inventions relates to microfluid systems for operation with tissue cells, human, animal or plant and (or) cultures viruses, and is intended for evaluation of tightness and integrity of system of valves of microfluid systems during their manufacture and operation. Device for evaluation of tightness of valves of microfluid system with pneumatic control includes a unit for radiation of valve and a recording and processing of radiation passed through valve, where radiation unit valve represents a body with two channels, one of which is made through, and in which there is a light guide with a tip. EFFECT: second channel is connected to first and is intended for air supply under pressure on valve microfluid system through tip of light guide, made in its turn with grain and fixed in through channel of case on side of its location on microfluid system; body is made with possibility of tight arrangement on microfluid system with provision of illumination light guide of whole surface of valve. 16 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК G01M 3/08 (13) 2 585 804 C1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2015114928/28, 22.04.2015 (24) Дата начала отсчета срока действия патента: 22.04.2015 (72) Автор(ы): Сахаров Дмитрий Андреевич (RU), Трушкин Евгений Владиславович (RU) (45) Опубликовано: 10.06.2016 Бюл. № 16 2 5 8 5 8 0 4 R U (54) СПОСОБ ОЦЕНКИ ГЕРМЕТИЧНОСТИ И ЦЕЛОСТНОСТИ СИСТЕМЫ КЛАПАНОВ МИКРОФЛЮИДНОЙ СИСТЕМЫ (57) Реферат: Группа изобретений относится к выполнен сквозным, и в котором размещен микрофлюидным системам для работы с клетками световод с наконечником. При этом второй канал тканей, человека, животных или растений и (или) выполнен соединенным с первым и предназначен культурами вирусов, и предназначена для оценки для подачи воздуха под давлением на клапан герметичности и целостности системы клапанов микрофлюидной системы через наконечник ...

HIGH SECURITY DOOR

1. Дверь (1) с высокой степенью надежности, включающая в себя дверное полотно (2), которое установлено с возможностью вращения в или на дверной коробке (4), которая оснащена расположенным по периметру упором (8), к которому дверное полотно (2) в своем закрытом положении (12) прилегает по периметру краевой областью (9) своей обращенной к упору (8) видимой стороны (10), причем между дверным полотном (2) и упором (8) расположен проходящий по периметру уплотнительный элемент (11), который с помощью запорного устройства (25) в закрытом положении (12) дверного полотна (2) может прижиматься к упору (8) и отводиться от него, отличающаяся тем, что запорное устройство (25) имеет, по меньшей мере, один магнитный элемент, который прижимает уплотнительный элемент (11) по периметру магнитной силой к упору (8) или к краевой области (9) дверного полотна (2). ! 2. Дверь по п.1, отличающаяся тем, что запорное устройство (25) включает в себя, по меньшей мере, одну расположенную внутри уплотнительного элемента (11) магнитную планку (23), которая в закрытом положении (12) дверного полотна (2) взаимодействует с другим элементом запорного устройства (25) с ферромагнитными свойствами, который расположен в области упора (8) или в краевой области (9) дверного полотна (2). ! 3. Дверь по п.1, отличающаяся тем, что запорное устройство содержит магнитный порошок, который внедрен в материал уплотнительного элемента и который в закрытом положении дверного полотна взаимодействует с другим элементом запорного устройства с ферромагнитными свойствами, который расположен в области упора или в краевой области дверного полотна. ! 4. Дверь по одному из пп.1-3, отличающаяся тем, что упор (8) состоит из фер� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2009 137 023 (13) A (51) МПК E06B 7/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2009137023/03, 06.10.2009 (71) Заявитель(и): КАВЕРИОН ГМБХ (DE) Приоритет(ы): (30) Конвенционный ...

Online seal detection device, multi-section type seal cavity machining equipment and method

本发明公开了一种在线密封检测装置，设置于两个部件的对接面，其包括：密封圈，其安装于两个部件的对接面内，该密封圈内设有周向的至少一腔室；进出气单元，其连通腔室的内部，该进出气单元上设置有至少一检测单元，该检测单元电连接处理器，用于检测进出气单元内的气体压力值和/或气体浓度值，然后将气体压力值和/或气体浓度值发送至处理器。本发明同时公开了一种多节式密封腔加工设备及在线密封检测方法。本发明与现有技术相比，可以实现对部件密封的在线检测，且可以同时对多节式密封腔加工设备的各工位进行检测，有效地提高对于多节式密封腔加工设备的密封检测效率。

Online sealing detection device, multi-section closed chamber processing device and method

본 발명은 두 부품의 연결면 상에 설치된 온라인 밀폐 검측 장치를 개시하고, 상기 온라인 밀폐 검측 장치는 상기 두 부품의 상기 연결면에 설치되고, 그 내부에 원주방향의 챔버가 적어도 하나 설치되는, 밀폐 링; 상기 챔버의 내부와 연결되는 유입 및 유출 유닛을 포함하되, 상기 유입 및 유출 유닛에 적어도 하나의 검측 유닛이 설치되며, 상기 검측 유닛은 프로세서와 전기적으로 연결되고, 상기 유입 및 유출 유닛 내의 기체 압력값 및/또는 기체 농도값을 검측한 다음, 상기 기체 압력값 및/또는 기체 농도값을 상기 프로세서에 전송한다. 또한 본 발명은 멀티 섹션형 밀폐 챔버 가공 장치 및 온라인 밀폐 검측 방법을 개시한다. 종래 기술과 비교하여, 본 발명은 부품 밀폐의 온라인 검측을 실현하고, 멀티 섹션형 밀폐 챔버 가공 장치의 각 작동 위치를 동시에 감지할 수 있으며, 이는 멀티 섹션형 밀폐 챔버 가공 장치의 밀폐 검측 효율을 효과적으로 개선할 수 있다. The present invention discloses an on-line hermetic detection device installed on a connecting surface of two parts, wherein the on-line hermetic detection device is installed on the connecting surface of the two parts, and at least one circumferential chamber is installed therein. ring; It includes an inflow and outflow unit connected to the interior of the chamber, wherein at least one detection unit is installed in the inflow and outflow unit, the detection unit is electrically connected to the processor, the gas pressure value in the inflow and outflow unit And/or detect the gas concentration value, and then transmit the gas pressure value and/or gas concentration value to the processor. The present invention also discloses a multi-section sealed chamber processing apparatus and an on-line sealed detection method. Compared with the prior art, the present invention realizes the on-line detection of component sealing, and can simultaneously detect each operating position of the multi-section sealing chamber processing apparatus, which effectively improves the sealing detection efficiency of the multi-section sealing chamber processing apparatus. Can improve.

High-pressure membrane accumulator test device to secure fuel supply safety for eco-friendly ships

본 발명은 이중연료엔진을 적용한 친환경 선박의 연료공급 안전성 확보를 위한 고압 멤브레인 어큐뮬레이터 시험장치에 관한 것으로서, 더욱 상세하게는 반복되는 유압을 멤브레인 어큐뮬레이터에 가압하여 피로도 충격 테스트를 하는 시험장치에 관한 것이다. 본 발명에 따른 친환경 선박의 연료공급 안전성 확보를 위한 고압 멤브레인 어큐뮬레이터 내구시험 장치는, 개구된 공간이 형성되어 시험대상이 되는 어큐뮬레이터(10)를 장착할 수 있는 지그(11); 상기 어큐뮬레이터(10)의 외주면을 일정한 간격을 두고 감싸는 형태를 가지고, 내부를 보호하는 안전커버(12); 상기 어큐뮬레이터(10)의 일측에 연결되고, 상기 어큐뮬레이터(10)에 공급된 작동유의 압력을 측정하는 압력센서(13); 상기 어큐뮬레이터(10)의 타측에 연결되고, 모터펌프(21)를 통하여 저장탱크 내부의 작동유를 승압하여 상기 어큐뮬레이터(10)에 유압을 공급하는 유압유니트(20); 상기 지그(11) 하부에 설치되며, 상면이 개방되어 내부에 상기 어큐뮬레이터(10)에서 발생하는 누유를 수용할 수 있는 공간이 형성된 누유받침(14); 및 상기 어큐뮬레이터(10)에 공급되는 유압의 최대/최솟값, 유동의 주파수, 동작 횟수 중 하나 이상을 포함하는 설정값으로 상기 유압유니트(20)를 제어하며, 상기 설정값에 대응하는 상기 압력센서(13)의 유압 측정값을 어큐뮬레이터 내구시험기준과 비교하는 시험데이터를 실시간으로 저장하는 컨트롤러부(30); 를 포함한다. The present invention relates to a high-pressure membrane accumulator testing device for securing fuel supply safety for an eco-friendly vessel to which a dual fuel engine is applied, and more particularly, to a testing device for performing a fatigue impact test by applying repeated hydraulic pressure to a membrane accumulator. A high-pressure membrane accumulator durability test apparatus for securing fuel supply safety of an eco-friendly ship according to the present invention includes: a jig 11 in which an open space is formed and the accumulator 10 to be tested can be mounted; a safety cover 12 having a shape surrounding the outer circumferential surface of the accumulator 10 at regular intervals and protecting the inside; a pressure sensor 13 connected to one side of the accumulator 10 and measuring the pressure of the hydraulic oil supplied to the accumulator 10; a hydraulic unit 20 connected to the other side of the accumulator 10 and supplying hydraulic pressure to the accumulator 10 by boosting hydraulic oil in the storage tank through a motor pump 21; an oil leakage support 14 installed under the jig 11, the upper surface of which is open, and having a space therein for accommodating the oil leakage generated from the accumulator 10; ...

SEALING TEST DEVICE

L'invention concerne une turbomachine, telle par exemple qu'un turboréacteur ou un turbopropulseur, comportant un carter (3) s'étendant selon un axe et comportant au moins un premier et un second points de fixation (35) décalés circonférentiellement l'un par rapport à l'autre, la turbomachine comportant en outre des moyens de suspension (12) aptes à relier ledit carter (3) à une voilure (19) d'un aéronef, caractérisée en ce que les moyens de suspension comportent un premier organe de suspension (20) relié au premier point de fixation (35) et un second organe de suspension (21) relié au second point de fixation (35), le premier organe de suspension (20) et le second organe de suspension (21) étant distincts et écartés circonférentiellement l'un de l'autre. The invention relates to a turbomachine, such as for example a turbojet or a turboprop, comprising a casing (3) extending along an axis and comprising at least a first and a second fixing point (35) circumferentially offset one with respect to the other, the turbomachine further comprising suspension means (12) able to connect said casing (3) to a wing (19) of an aircraft, characterized in that the suspension means comprise a first member suspension member (20) connected to the first attachment point (35) and a second suspension member (21) connected to the second attachment point (35), the first suspension member (20) and the second suspension member (21) being distinct and circumferentially spaced from each other.

METHOD AND DEVICE FOR CONTROLLING THE PRESENCE AND THE CONDITION OF THE VALVE GASKET OF A CONTAINER CONTAINING A GAS UNDER PRESSURE, IN PARTICULAR A LIQUID OIL GAS

CONNECTING DEVICE COMPRISING A FLEXIBLE SLEEVE FOR COLLECTING A LIQUID IN CASE OF LEAK OR SUINTEMENT

L'invention a pour objet un dispositif de raccordement qui comprend : - un premier conduit (32), - un deuxième conduit (34), - un manchon souple (46) qui comporte une première extrémité (48) configurée pour recouvrir une partie du premier conduit (32) et une deuxième extrémité (50) configurée pour recouvrir une partie du deuxième conduit (34), - un premier système de serrage (52) configuré pour enserrer la première extrémité (48) du manchon souple (46) autour du premier conduit (32), - un deuxième système de serrage (54) configuré pour enserrer la deuxième extrémité (50) du manchon souple (46) autour du deuxième conduit (34). The invention relates to a connecting device which comprises: - a first conduit (32), - a second conduit (34), - a flexible sleeve (46) which has a first end (48) configured to cover a part of the first conduit (32) and a second end (50) configured to cover a portion of the second conduit (34); - a first clamping system (52) configured to grip the first end (48) of the flexible sleeve (46) around the first conduit (32); - a second clamping system (54) configured to grip the second end (50) of the flexible sleeve (46) around the second conduit (34).

Device for checking a seal

DEVICE FOR MEASURING THE IMPERMEABILITY OF THE MEANS FOR SEALING A FILTER CARTRIDGE AND CORRESPONDING METHOD

L'invention concerne un dispositif 1 de mesure de l'imperméabilité des moyens d'étanchéité d'une cartouche de filtre 2, comprenant: - un moyen d'obturation 9 de la cartouche, - un châssis 7 apte à coopérer hermétiquement avec les moyens d'étanchéité de la cartouche, - un moyen de fermeture amovible 8, apte à coopérer avec le châssis 7 pourvu de la cartouche et du moyen d'obturation, de manière à former une chambre hermétique 10, et - un moyen d'aspiration ou d'injection d'un fluide monté sur une entrée 11 du moyen de fermeture 8 et capable de créer une dépression ou une surpression à l'intérieur de la chambre hermétique 10 afin de détecter des fuites. L'invention concerne également le procédé de mesure correspondant. The invention relates to a device 1 for measuring the impermeability of the sealing means of a filter cartridge 2, comprising: - a means 9 for closing the cartridge, - a frame 7 adapted to cooperate hermetically with the means sealing the cartridge, - a removable closure means 8, adapted to cooperate with the frame 7 provided with the cartridge and the closure means, so as to form a sealed chamber 10, and - a suction means or injection of a fluid mounted on an inlet 11 of the closing means 8 and capable of creating a vacuum or an overpressure inside the hermetic chamber 10 to detect leaks. The invention also relates to the corresponding measurement method.

Leak detection device for use at steel liner wall of basin of swimming pool used for storage of e.g. fuels of nuclear power plant, has bell shaped walls defining chambers with open faces that are coaxially located in same plane

The device (10) has a measurement box (1) comprising bell shaped walls (1-1, 1-2) defining respective internal chambers (1a, 2a) with open faces (1b, 2b) bordered by seals (1c, 2c). A flexible pipe (3-2) connects one of the chambers to a device decreasing pressure of gas i.e. air inside the chamber in a controlled manner. A compressed gas supply device is connected to a pipe and/or the chamber. One of the walls is fixed at another wall, so that the chamber surrounds side part (1-1a) of the wall. One of the seals surrounds another seal. The faces are located in same plane in a coaxial manner. An independent claim is also included for a method for detecting a leak at wall of basin of swimming pool.

Waterproof membrane leakage test method

L’invention concerne un procédé de test d'étanchéité d’une membrane d’étanchéité (2) fixée sur une barrière thermiquement isolante (1) reposant sur une surface de support étanche (13), le procédé comportant : - appliquer une première bande de mastic étanche (17) sur la membrane d’étanchéité (2), - appliquer une deuxième bande de mastic étanche (18) sur la surface de support (13) autour de la membrane d’étanchéité (2), - agencer de manière étanche au moyen des première et deuxième bande de mastic étanche une couverture étanche (12) entre la membrane d’étanchéité (2) et la surface de support (13), la couverture étanche (12), la surface de support (13), la première bande de mastic étanche (17), la deuxième bande de mastic étanche (18) et la membrane d’étanchéité (2) délimitant conjointement un espace clos (19), - mettre en dépression l’espace clos (19) par rapport à un environnement extérieur audit espace clos (19) ; et - mesurer un paramètre représentatif de l’évolution de la pression à l’intérieur de l’espace clos (19) après la mise en dépression dudit espace clos (19). Figure à publier : Fig. 2 The invention relates to a method for testing a waterproofing membrane (2) attached to a thermally insulating barrier (1) resting on a waterproof support surface (13), the method comprising: - applying a first strip of waterproof sealant (17) on the waterproofing membrane (2), - apply a second strip of waterproof sealant (18) to the support surface (13) around the waterproofing membrane (2), - arrange so waterproof by means of the first and second waterproof mastic strip a waterproof cover (12) between the waterproofing membrane (2) and the support surface (13), the waterproof cover (12), the support surface (13), the first strip of waterproof mastic (17), the second strip of waterproof mastic (18) and the waterproofing membrane (2) jointly delimiting an enclosed space (19), - depressurizing the enclosed space (19) in relation to to an environment outside said enclosed ...

Internal combustion engine cylinder head gasket leak measuring system has metering vessel linked to coolant circuit expansion chamber

The measuring system, designed to detect combustion gases leaking into the engine cooling system through the cylinder head gasket, includes a metering vessel (20) in the cooling circuit, which contains an expansion chamber (10). The metering vessel has an inlet (22) and an outlet (23) with solenoid valves (24, 26), and a control unit to actuate them in sequence to recuperate combustion gases from the expansion chamber and purge the vessel after a representative measurement has been taken from the gas pressure in the vessel.

Patent FR2184006A1

METHOD AND DEVICE FOR DETECTING LEAKS BETWEEN TWO CONSECUTIVE WALLS OF A BASIN CONTAINING A FLUID

DEVICE FOR DETECTING LEAKAGE AT THE LEVEL OF A WALL OF A BASIN

How to test the sealing of the sealing membrane

본 발명은 밀봉된 지지 표면(13) 상에 놓이는 단열 장벽(1)에 부착되는 밀봉 멤브레인(2)의 밀봉 테스트 방법에 관한 것으로, 방법은: - 밀봉재의 제1 스트립(17)을 밀봉 멤브레인(2)에 적용하는 단계; - 밀봉 멤브레인(2) 주위의 지지 표면(13)에 밀봉재의 제2스트립(18)을 적용하는 단계; - 밀봉된 커버(12)를 밀봉 멤브레인(2)과 지지 표면(13) 사이에서 밀봉재의 제1 및 제2 스트립에 의해 밀봉되게 배열하는 단계로서, 밀봉된 커버(12), 지지 표면(13), 밀봉재의 제1 스트립(17), 밀봉재의 제2 스트립(18) 및 밀봉 멤브레인(2)은 함께 밀폐 공간(19)을 정의하는 단계; - 상기 밀폐 공간(19) 외부의 환경에 대해 밀폐 공간(19)을 감압하는 단계; 및 - 상기 밀폐 공간(19)이 감압된 후 밀폐 공간(19) 내부의 압력 변화를 나타내는 매개변수를 측정하는 단계;를 포함한다.

CELL FOR MEASURING PERMEABILITY OF PLUGS

Une cellule d'essais (30) pour la mesure de la perméabilité aux gaz d'au moins un échantillon de matière ou d'un bouchon, comprend : -une cloche de conditionnement (32) sensiblement cylindrique comportant une paroi circonférentielle étanche, un premier orifice d'entrée (43) et un premier orifice de sortie (151), -une plaque de distribution (31) étanche aux gaz, apte à être assemblée avec la cloche de conditionnement (32) de manière étanche, et comportant au moins un conduit d'alimentation (35) traversant la plaque (31) de manière à déboucher dans le premier orifice d'entrée (43), -un support d'échantillon (33) monobloc traversé par un conduit (100) sensiblement cylindrique reliant un second orifice d'entrée (150) et un second orifice de sortie (152), apte à être assemblée avec la cloche (32, 132) de manière à former un volume étanche, -une plaque de collecte (29) étanche aux gaz, apte à être assemblée avec le support d'échantillon (33) de manière étanche, et comportant au moins un conduit de collecte (25) traversant la plaque (29) de manière à déboucher dans le second orifice de sortie. Le conduit (100) du support d'échantillon (33) présente une surface d'appui intérieure qui est une surface de révolution, comportant une section de plus petit diamètre (105), et comporte au moins une première portion de surface tronc-conique (106) convergeant vers cette section de plus petit diamètre (105), ainsi qu'une seconde portion de surface d'appui (107) divergeant du côté opposé à partir de la section de plus petit diamètre. A test cell (30) for measuring the gas permeability of at least one sample of material or a plug comprises: a substantially cylindrical packaging chamber (32) having a sealed circumferential wall, a first inlet port (43) and a first outlet port (151); a gas-tight distribution plate (31) adapted to be assembled with the packaging bell (32) in a sealed manner and having at least one supply duct (35) passing ...

Method and apparatus for detecting fluid leakage between two pipe sections

Pipeline element leak detection system and method

A system for detecting leaks comprises at least one pipeline element, a leak detection device, and a pre-formed, heat-shrinkable sleeve comprising at least one inlet aperture. A method of manufacturing the sleeve comprises the steps of applying a cross-linkable material around a standard-sized sleeve mold, cross-linking the material, removing the cross- linked material from the mold, heating and stretching the cross-linked material around a stretching sleeve mold, allowing the material to cool, and removing the cooled sleeve from the mold. A method of monitoring a leak comprises the steps of receiving the pipeline element in the sleeve and applying heat to the sleeve, whereby the sleeve shrinks and conforms substantially around the profile of the pipeline element and at least a portion of the leak detection device.

Hand-held fuel cap leakage tester

A fuel cap leakage tester (210) is provided comprising a fuel cap support (20), a pressure source (261), and a monitor (32). The fuel cap support (20) is formed to include a test chamber (28) and is adapted to receive a fuel cap (30) to be tested in the test chamber (28) to establish a pressurizable region, (57) therein and a sealed connection between the fuel cap (30) to be tested and the fuel cap support (20). The monitor (32) is positioned to communicate with the pressurizable region (57) formed in the fuel cap support (20) and is configured to measure air pressure in the pressurizable region (57). The fuel cap leakage tester (210) further comprises a system (222, 224, 226) for communicating a flow of pressurized air from the pressure source (261) to the pressurizable region (57) with a predetermined pressure drop of the pressurized air therebetween. The monitor (32) measures the pressure level of the pressurized air in the pressurizable region (57) to determine whether the fuel cap (30) to be tested meets or exceeds a predetermined leakage flow rate.

Method of testing air-tightness of hermetically sealed lash adjuster

조립하는 과정에서, 보디와 플런저 사이의 상대 슬라이딩부에 개재하는 제 1,제 2 시일 부재의 실링성을 확인할 수 있는 밀봉형 래시 어저스터의 기밀성 검사 방법을 제공한다. 리사이클 구멍(27)을 측벽에 설치한 하방 개구 플런저(20)를 보디(10) 내에 끼워 삽입하여 어저스터를 조립하는 과정에서, 플런저 최상부의 구멍(21)으로부터 가압 기체를 플런저(20) 내에 공급하여, 어저스터 내의 기밀성을 검사하는 방법이며, 슬라이딩부에 시일재(29)를 구비한 보디(10) 내에, 슬라이딩부에 시일재(19)를 구비한 플런저(20)를 끼워 삽입할 때, 플런저(20) 하단부를 시일 부재(29)에 슬라이딩 접촉시켜, 구멍(27)을 폐색하여 어저스터 내부의 기밀성(시일재(29)의 실링성)을 검사하고, 시일재(29)가 정상인 경우에, 구멍(27)을 개구하여 플런저(20)를 더욱 삽입하고, 시일재(19)와 보디(10)가 슬라이딩 접촉하고, 또한 구멍(27)이 시일재(29)의 바로 전까지 이른 단계에서, 어저스터 내부의 기밀성을 검사하여, 시일재(19)의 실링성을 판별한다. Provided is a method for inspecting an airtightness of a sealed lash adjuster capable of confirming the sealability of first and second seal members interposed in a relative sliding portion between a body and a plunger during assembly. The pressurized gas is supplied into the plunger 20 through the hole 21 at the uppermost position of the plunger in the process of inserting the lower opening plunger 20 provided in the sidewall of the recycle hole 27 into the body 10 to assemble the adjuster When inserting the plunger 20 provided with the sealing material 19 into the sliding portion in the body 10 provided with the sealing material 29 in the sliding portion, The airtightness of the inside of the adjuster (sealing property of the sealing material 29) is inspected by sliding the lower end of the plunger 20 against the sealing member 29 to close the hole 27. When the sealing material 29 is normal The hole 27 is opened and the plunger 20 is further inserted so that the seal member 19 and the body 10 slide in contact with each other and the hole 27 comes into contact with the sealing member 29 , The airtightness of the interior of the adjuster is inspected to determine the sealing property of the sealant 19.

Actuator predictive system

An actuator system includes a piston-cylinder arrangement including a piston that is movable with respect to a cylinder. A first flow path is in fluid communication with the piston-cylinder arrangement and a second flow path is in fluid communication with the piston-cylinder arrangement. A control system is operable to fluidly connect the first flow path to a source of high-pressure fluid and to connect the second flow path to a drain to move the piston in a first direction. A pressure sensor is fluidly connected to the first flow path and is operable to measure sufficient pressure data during the movement of the piston to generate a pressure versus time curve. The control system is operable to compare the generated pressure versus time curve to a known standard pressure versus time curve stored in the control system to determine the condition of the piston-cylinder arrangement.

Boiler tube leak tester

Cell for measuring cork permeability

The cell (30) has a gas-tight collection plate (29) assembled with a sample holder in a watertight manner so as to cover an output opening (152). An axial cylindrical pipe (100) of the holder includes an interior bearing surface i.e. revolution surface, comprising a small diameter section whose diameter is lower than that of other sections of the bearing surface. A truncated surface portion of the pipe converges toward the small diameter section, where a bearing surface portion is divergent on a side opposed from the small diameter section. An independent claim is also included for a stopper support and test cell assembly.

Patent DE4015321C2

Device for detecting the degree of connection between two chamber seals isolated from the external environment

(57)【要約】 本発明は密封連結装置に関し、ここで、ＡおよびＢの各チャンバには、密封手段（１２，１４）の介在物を具えるフランジ（４，５）と協働するドア（２，３）に備えられた少なくとも一つのアクセス用開口部が設けられ、２つのドアの一方が対応するフランジ（４）に連結されており、両ドア（２，３）にはそれぞれのフランジ（４，５）にロック手段が設けられ、それらを連結する連結手段を連結して、密封手段（１２，１６および１３，１４）間の接触を介して、外部環境から隔離された内側空間Ｃを形成する。本発明は、検知装置が、固定チャンバ（Ａ）のフランジ（４）の外面に配された内側溝（３０）と外側溝（３５）の２つの溝と、溝（３５）に配された継ぎ手（３６）と、フランジ（４）に配され内側溝（３０）をパイプ取り付け具（３４）に連結するチャンネル（３１，３２，３３）のネットワークと、真空ポンプ（３８）であって吸入管（３７）がパイプ取り付け具に連結されているポンプと、溝（３０）につながる空気回路中の真空値を測定し、真空が適切な値に届かない場合に、警報手段（４７，４８）に作用するセンサー（４４）とを具えることを特徴とする。

Method of testing air-tightness of hermetically sealed lash adjuster

【課題】　組み立てる過程で、ボディとプランジャ間の相対摺動部に介装する第１，第２のシール部材のシール性を確認できる密封型ラッシュアジャスタの気密性検査方法を提供する。 【解決手段】　リサイクル孔27を側壁に設けた下方開口プランジャ20をボディ10内に嵌挿してアジャスタを組み立てる過程で、プランジャ頂部の孔21から加圧気体をプランジャ20内に供給して、アジャスタ内の気密性を検査する方法で、摺動部にシール材29を備えたボディ10内に、摺動部にシール材19を備えたプランジャ20を嵌挿するに際し、プランジャ20下端部をシール部材29に摺接させ、孔27を閉塞してアジャスタ内部の気密性(シール材29のシール性)を検査し、シール材29正常の場合に、孔27を開口してプランジャ20をさらに挿入し、シール材19とボディ10が摺接し、かつ孔27がシール材29の手前まできた段階で、アジャスタ内部の気密性を検査し、シール材19のシール性を判別する。

Actuator predictive system

An actuator system includes a piston-cylinder arrangement including a piston that is movable with respect to a cylinder. A first flow path is in fluid communication with the piston-cylinder arrangement and a second flow path is in fluid communication with the piston-cylinder arrangement. A control system is operable to fluidly connect the first flow path to a source of high-pressure fluid and to connect the second flow path to a drain to move the piston in a first direction. A pressure sensor is fluidly connected to the first flow path and is operable to measure sufficient pressure data during the movement of the piston to generate a pressure versus time curve. The control system is operable to compare the generated pressure versus time curve to a known standard pressure versus time curve stored in the control system to determine the condition of the piston-cylinder arrangement.

Sealing testing device for systems for isolating two media in a sealed manner

Substrate seal test method and apparatus

A method for testing whether a sealing method is effective may include the steps of testing a flow characteristic of the substrate, sealing the substrate, re testing the flow characteristic of the substrate, then comparing the before and after flow characteristics of the substrate to determine whether the sealing step was effective or to quantify a sealing effectiveness to the sealing step.

Leakage detection based on fluid property changes

A leakage detection system is described, with the leakage detection system comprising a fluid chamber (8) containing a first fluid, and a sealing element (12) located between the fluid chamber and a second fluid chamber (15), said sealing element (12) being adapted for sealing the first fluid in the fluid chamber (8), and the second fluid chamber (15) being located adjacent the sealing element and containing a second fluid. The leakage detection system further comprises a detection unit (19) in fluid connection with the second fluid chamber, said detection unit being adapted for detecting leakage by evaluating a property of the second fluid, with said property being affected by first fluid leaking into the second fluid.

Device and system for corrosion detection

A device for monitoring gas effusing from a pipe, the device comprising a mounting assembly having an upper and lower bracket; a housing located on the upper bracket; the bottom of the housing is of a shape complementary to the pipe being monitored; a probe assembly; a bore in the housing for receiving the probe assembly; the probe assembly comprising a probe insert; a chamber for collecting gas in the bottom of the probe insert formed by side walls and an upper wall; a compressible sealing means in the bottom of the side walls for sealingly engaging the outer surface of the pipe to be monitored; a passageway in the probe insert, extending from an outlet at the top surface of the probe insert to an inlet in the upper wall of the chamber, such that the passageway is in flow communication with the chamber; a tube receivable through the outlet of the passageway; a plate removably connected to the housing for, securing the probe assembly in place; the plate comprising a biasing means for compressing the sealing means of the probe disk to engage the outer surface of the pipe to be monitored forming a substantially hermetic seal; and the tube when resting at the inlet of the probe disk extends through the plate.

PROCEDURE AND EQUIPMENT FOR TESTING END SEALS FOR CONTAINERS FOR LEAKAGE BY PRESSURIZED GASES

Device for sealing pressure test and leakage test at pipeline joint

本发明涉及一种用于管道连接处密封试压试漏的装置，包括进水装置、连接组件和密封组件；可将密封圈塞入管道连接处的缝隙内，使密封圈将管道连接处隔离出一个密闭的空腔，随后通过第一导水细管将水注入密闭的空腔内，并持续的将水注入密闭的空腔内，同时观察第一压力表，当水压达到预定值后停止注水，并观察第一压力表上的数值，当数值未出现明显变化时，则证明管道连接处出现漏水的现象，当压力数值减小时可对管道连接处进行重新检查并消除漏点，由此能够更好的应对不同大小的管型，并且操作简单且工作量小，成本低，方便运输。

Apparatus for testing the gas-tightness of joints between hollow bodies

ABSTRACT This invention relates to an apparatus for testing the gas-tightness of joints between hollow bodies, for example, pipes.With the apparatus, a test space with two concentric chambers of variable sizes is formed. The outer one is filled with a gaseous test medium and the inner one with an incompressible pressurized medium. It is thereby possible to reduce substantially the quantity of the gaseous test medium. The safety of the entire apparatus is improved extraordinarily.

Apparatus for pressure testing pipe

External pipe testing apparatus is disclosed as comprising semi-cylindrical housing sections hingedly connected for swinging between an open position to permit the housing to be moved into and out of a position about a section of the pipe to be tested. When the pipe sections are locked to one another, seal strips mounted on the inside of each housing section are caused to sealably engage with one another and the ends of the pipe section to form an annular test chamber about the pipe section.

Leakage checking method of slip joint section

Airtight tester

An airtight tester is used to test air tightness at a testing position of an object to be tested. The airtight tester includes a base, a leakage-test pipe, a moving unit, and a detector. The leakage-test pipe is connected to a pressure source, such that the pressure source may output a pressure to the leakage-test pipe. When the leakage-test pipe covers at the testing position of the object, the moving unit is pressed at an outer edge of the leakage-test pipe, so that the leakage-test pipe is jointed to a surface of the object, and thus, the detector detects the pressure state of the leakage-test pipe. Therefore, the testing staff obtains the air tightness of the object through an output message of the detector, and thus strengthening the structure of the object through utilizing the information.

Apparatus for pressure testing pipe

Testing apparatus

1509382 Testing pipe connections for leaks M M HASHA 20 March 1975 [6 May 1974 16 Sept 1974] 46780/77 Divided out of 1509381 Heading G1S Apparatus for externally testing a threaded or welded connection 19d between tubes 17d and 18f comprises a body 20 provided with seals 22, 23, 40, see also Division F2, which can be selectively moved radially by fluid-pressure through conduits 24, 25, 29 to grip the tubes and form either a single test chamber 20a or two chambers 30, 31, one for each end of the connection. Test fluid is introduced through conduits 26, 27 and any pressure fall off is noted by reading a gauge (not shown) connected to the conduits. Triangular back up means 80a or garter springs behind the seal faces inhibit extrusion of the seals.

Erosion resistant flow conduit

A particulate-accommodating fluid flow directing apparatus comprises a failure detection housing containing a flow directing insert, the housing serving as a pressure boundary; failure at any location along the insert being detectable by means associated with the housing. The insert can be manufactured of erosion resistant materials, including non-ductile materials such as ceramics. The insert is sealed to the housing at an inlet and a discharge forming a pressure chamber between the insert and housing. The pressure chamber can be maintained at a pad pressure complementary to the process pressure, the pad pressure being maintained and monitored for indication of insert failure.

Apparatus and method for on-line detection of leaky valves

An apparatus and method for simply and economically detecting leaks in an isolation valve disposed in an on-line fluid transport system having at least an upstream pipe (5) and a downstream pipe (6) is provided, the apparatus comprising an isolation valve connected between the upstream pipe and downstream pipe for isolating fluid flow through the transport system; wherein the isolation valve includes at least one upstream seal (4), one downstream seal (4), and an inner cavity (3) effectively isolated from the fluid flow by the seals. The apparatus further comprises a pressure sensor (8) and a vent valve (9), wherein the vent valve is in fluid communication with the isolation valve's inner cavity via a vent port (7) to permit venting of process pressure accumulated within the inner cavity to an external environment (10) when the vent valve is opened; and wherein when the vent valve is closed, the pressure sensor will measure a resulting difference in fluid pressure within the cavity, the pressure difference being indicative of the integrity of the upstream and downstream seals. The present invention also provides a method of employing the apparatus in association with commercial and industrial fluid transport systems wherein the inner cavity can be vented under full on-line process pressure.

Method and apparatus for the maintenance of pipelines

Method and apparatus for externally and internally testing for leaks in connections between tubular members

A method and apparatus for hydrostatically testing connections between segments of pipe whereby pressurized hydrostatic test fluid is selectively applied to the connection such that the pressures are principally applied in the vicinity of the radial orifices leading into the sealing elements of the connection and not radially to the inner or outer annular surfaces of the connection in the vicinity of the sealing elements of the connection which would tend to substantially affect the bearing pressure of the sealing elements. In addition, a method and apparatus for selectively applying pressurized hydrostatic test fluid such that the pressures are applied to those areas where the bearing pressure of the sealing elements of the connection is sensitive to the applied pressures, thus manipulating the bearing pressure and controlling the sealing capacity of the connection during hydrostatic leak testing.

Assembly for evaluating gasket service life and method for performing the same

A method and apparatus for approximating the life of a gasket used in a predetermined environment is provided which allows for the long-term exposure to the environment to be simulated over a shortened period of time. The method and apparatus utilize the steps of placing a gasket sample in a test assembly, clamping the gasket sample within the test assembly at a predetermined clamping pressure whereby a chamber is formed within the interior of the gasket sample, filling the chamber with a gas at a predetermined pressure from a gas fill system, changing the temperature of the gasket sample over a predetermined number of temperature cycles, and measuring the amount of the gas which leaks from the chamber. The apparatus may also include a pressure control system for changing the pressure within the chamber over a predetermined number of pressure cycles or in response to predetermined temperature conditions.

Sensing leak in a multi-seal sealing assembly with sensors

A multi-seal sealing assembly with sensors includes a housing, a first sensor and a second sensor. The housing can receive multiple seals and can mount to a surface of a tool. The multiple seals are configured to seal against fluid flow between the surface of the tool and the housing. Multiple sensors corresponding to the multiple seals are mounted to the housing adjacent respective seals and between the housing and the surface of the tool. The sensors sense a flow parameter at different levels responsive to an absence or a presence of fluid flow past the seals.

DEVICE FOR DETECTING LEAKS BETWEEN ELEMENTS OF A CONNECTION UNIT AND TWO CHAMBERS INSULATED BY THE ENVIRONMENT

Sensing leak in a multi-seal sealing assembly with sensors

A multi-seal sealing assembly with sensors includes a housing, a first sensor and a second sensor. The housing can receive multiple seals and can mount to a surface of a tool. The multiple seals are configured to seal against fluid flow between the surface of the tool and the housing. Multiple sensors corresponding to the multiple seals are mounted to the housing adjacent respective seals and between the housing and the surface of the tool. The sensors sense a flow parameter at different levels responsive to an absence or a presence of fluid flow past the seals.

Patent DE3526325C2

Method for detecting developing defects in sealing elements and blocking elements of stop valves

Изобретение относится к области исследования устройств на герметичность и может быть использовано для выявления развивающихся дефектов в уплотнительных элементах (5) и запорных органах (6) шаровых кранов (1). Сущность: переводят шаровой кран (1) в положение “закрыто”. Через открытую дренажную линию или свечу (4) подключают устройство (7) вакуумирования. С помощью устройства (7) вакуумирования создают заданное отрицательное давление в зоне контакта уплотнительных элементов (5), имеющих кольцевую форму, с запорным органом (6). Наличие развивающихся дефектов на уплотнительных элементах (5) и запорном органе (6) приводит к утечкам транспортируемого газа, которые выявляют посредством регистрации акустического сигнала. Технический результат: повышение чувствительности выявления развивающихся дефектов. 1 ил.

LEAK TEST DEVICE FOR DOUBLE DOOR TRANSFER SYSTEMS

Dispositif de test d’étanchéité d’au moins une partie d’un système de transfert étanche à double porte entre deux volumes clos, ledit système comprenant une première bride et une deuxième bride (18) aptes à être solidarisées l'une à l'autre, et une première porte et une deuxième porte (22) obturant normalement des ouvertures délimitées respectivement par la première et la deuxième brides, ledit dispositif comportant un boîtier (36) comprenant une cavité (38) munie d’une ouverture (44), des moyens de connexion mécanique (50) à une bride (18) de sorte que la cavité (38) soit fermée par la bride (18) et la porte (22) et un joint gonflable (48) qui, à l’état gonflé, est en contact avec la bride (18) et assure une étanchéité permettant de vérifier l’étanchéité entre la bride (18) et la porte (22). Figure pour l’abrégé : 2C Device for testing the leaktightness of at least part of a leaktight double-door transfer system between two closed spaces, said system comprising a first flange and a second flange (18) capable of being secured to one another, and a first door and a second door (22) normally closing openings delimited respectively by the first and the second flanges, the said device comprising a housing (36) comprising a cavity (38) provided with an opening (44), means for mechanical connection (50) to a flange (18) so that the cavity (38) is closed by the flange (18) and the door (22) and an inflatable seal (48) which, when inflated , is in contact with the flange (18) and provides a seal making it possible to check the seal between the flange (18) and the door (22). Figure for abstract: 2C

Method for testing a seal of a sealed bearing cavity

The method for testing the integrity of a seal of a cavity in an engine includes providing a sealed test tank external to the cavity, the test tank having an internal volume that is particularly selected, as described herein. A pressure differential is generated between the test tank and the cavity, by creating an initial test pressure within the test tank that is different than an ambient pressure inside the cavity. Gas flow between the test tank and the cavity is then permitted, and a change in pressure within the test tank is measured, as is a test time required for the pressure inside the test tank to reach a reference pressure. The measured test time is compared with a predetermined reference time, and the integrity of the seal may be confirmed when the test time is greater than or equal to the reference time.

Apparatus for testing the gas tightness between joints of hollow bodies

This invention relates to an apparatus for testing the gas-tightness of joints between hollow bodies, for example, pipes. With the apparatus, a test space with two concentric chambers of variable sizes is formed. The outer one is filled with a gaseous test medium and the inner one with an incompressible pressurized medium. It is thereby possible to reduce substantially the quantity of the gaseous test medium. The safety of the entire apparatus is improved extraordinarily.

Device for controlling leaks in a high voltage shielded set

Dispositif de contrôle de fuite entre des brides d'assemblage de viroles d'un poste électrique sous enveloppe métallique remplie de gaz comprimé, à l'aide de deux joints disposés concentriquement en série sur les faces d'assemblage des viroles. Le dispositif est caractérisé en ce que le volume interne compris entre les deux joints est obturé par un joint élastique disposé dans un trou lisse ménagé à travers l'une des viroles.

Erosion resistant flow conduit

A particulate-accommodating fluid flow directing apparatus comprises a failure detection housing containing a flow directing insert, the housing serving as a pressure boundary; failure at any location along the insert being detectable by means associated with the housing. The insert can be manufactured of erosion resistant materials, including non-ductile materials such as ceramics. The insert is sealed to the housing at an inlet and a discharge forming a pressure chamber between the insert and housing. The pressure chamber can be maintained at a pad pressure complementary to the process pressure, the pad pressure being maintained and monitored for indication of insert failure.

Lubricant pumping system

A lubricant pumping system includes a lubricant pump having a lubricant pumping space, a first seal configured to seal the lubricant pumping space, at least one signal detector, and a leakage detector for detecting leakage of a lubricant from the pumping space through the first seal and sending a signal to the signal detector in response to a detection of the leakage of the lubricant. The signal detector may produce a visual or acoustic output in response to receipt of the signal.

Apparatus for checking for leaks from metal-clad high-tension electric gear

Apparatus for checking for leaks between the connection flanges of two portions of metal-clad electric gear, said flanges being sealed by means of two seals disposed concentrically in series on the facing surfaces of the flanges, the electric gear being filled with compressed gas, wherein the internal volume (10) lying between the two seals (6, 7) communicates with a smooth hole (11, 24) which itself communicates to the outside, the smooth hole being plugged by a resilient seal (18).

A resilient seal

There is described a method and an apparatus for testing or isolating a section of pipe, the apparatus comprising a cylindrical mandrel for insertion into a section of pipe, the mandrel including at least one portion of progressively increasing diameter, and at least one seal disposed around the mandrel and actuatable in response to applied fluid pressure to move along the increasing diameter portion of the mandrel, causing the seal member to radially expand into sealing contact with an inner surface of the pipe.