WO1992014058A1 - Junction assembly with leak detection means - Google Patents
Junction assembly with leak detection means Download PDFInfo
- Publication number
- WO1992014058A1 WO1992014058A1 PCT/US1992/000154 US9200154W WO9214058A1 WO 1992014058 A1 WO1992014058 A1 WO 1992014058A1 US 9200154 W US9200154 W US 9200154W WO 9214058 A1 WO9214058 A1 WO 9214058A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- channel
- forming
- seal
- recited
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/38—Investigating fluid-tightness of structures by using light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/167—Flanged joints characterised by the sealing means in connection with the appearance or detection of leaks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
- G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/183—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for pipe joints or seals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S277/00—Seal for a joint or juncture
- Y10S277/91—O-ring seal
Definitions
- the present invention relates generally to fluid transport apparatus and more particularly to an improved O- ring sealed, fluid conducting junction assembly having means for immediately detecting O-ring failure or leakage.
- Another object of the present invention is to provide an improved junction assembly of the type described having a containment chamber disposed between two O-rings and having means for detecting intrusion of a fluid into the containment chamber in the event of a seal failure.
- Yet another object of the present invention is to provide a fluid transport system including an assembly of the type described having means for quickly sensing the intrusion of fluid into the containment chamber due to the failure of the primary O-ring and for immediately shutting down the system in the event that such failure is detected.
- a preferred embodiment of the present invention includes a pair of mating surfaces forming the junction of two fluid conduits, means forming an annular containment chamber in at least one of the surfaces circumscribing the conduit passageway, a pair of spaced apart O-ring seals respectively disposed on opposite sides of the containment chamber, a fluid sensor extending into the containment chamber for sensing the presence of unwanted fluids therein due to the failure of an O-ring seal.
- a control system responsive to an output signal generated by the sensor issued to deactivate the system in the event of a failure.
- Fig. 1 is a schematic showing of a fluid supply system including an exploded cross section of a generalized fluid conducting junction assembly incorporating a dual O-ring seal, containment chamber and leak detector in accordance with the present invention.
- Fig. 2 is an end view of one of the joint members shown in Fig. l illustrating the containment channel and dual 0- ring configuration.
- Fig. 3 is a cross section of a fluid filter apparatus including a junction assembly in accordance with the present invention.
- Fig. 1 illustrates generally a fluid supply system and conduit including two mating parts of a leak detecting coupling device such as a union joint or the like in accordance with the present invention.
- the first part 10 includes a first generally cylindrical conduit 12 having a first flanged end 14 with a leak detector 16 attached thereto.
- the face 18 of the flanged end 14, which will be adjoined to the second part of the union joint and held in engagement therewith by suitable bolts, clamps, etc., includes an annular containment chamber or collector channel 20 and two annular O-ring grooves 22 and 24.
- the two O-rings 26 and 28 are shown apart from their respective grooves, and related by dashed correlation lines.
- the channel 20 is disposed between the two O-ring grooves and their respective O-rings 26 and 28, and, in the event of a primary O-ring failure, provides a trough or chamber for containment of the escaping fluid.
- the leak detector 16 is attached to the flange 14 such that the sensor probe 32 is inserted through a hole 30 in the flange 14 and into or closely proximate the channel 20.
- the face 18 of the first part 10 of the union joint is shown more clearly in Fig. 2 wherein the primary O-ring 26 is shown located closest to the conduit opening through which system fluid will be caused to pass.
- the collector channel 20 is formed in only the first part of the union joint, and is in communication with the hole 30 or socket that will house the sensor probe 32.
- the secondary O-ring 28 is disposed outermost from the conduit opening and, in the event of a primary O-ring failure, will prevent fluid from leaking out of the joint into the surrounding atmosphere.
- the second part 34 of the union joint is similarly comprised of a generally cylindrical conduit 36 having a second flanged end 38.
- the face 40 of the flanged end 38 includes two O-ring grooves 42 and 44, disposed so as to mirror the two O-ring grooves 22 and 24 on the first part of the joint.
- the two parts are adjoined and aligned by the mating of each O-ring to it's respective groove.
- the two parts are fastened together by clamping, bolting or other suitable means.
- the sensor probe 32 preferably comprises an optical device coupled to a fiber optic conductor which leads to an optical detector.
- the tip of the probe has an index of refraction such that when surrounded by air, exhibits a high level of internal reflection; but when in contact with a liquid, assumes a materially different reflective characteristic. As a consequence, the level of light transmitted to the tip through one or more of the fibers of the conductor and reflected back into other receiving fibers falls below a detection threshold and a leak is signaled. Alternatively, some situations may permit suitable resistive, capacitive or other appropriate type of probe to be substituted for the aforementioned optical leak trace probe. Depending upon the application, probe 32 may extend into channel 20 and perhaps be coated with a thin layer of inert material.
- the material forming the coupling device is translucent.
- a sealed transparent or translucent plug of an appropriate material may be used to separate probe 32 from the channel 20.
- Fig. 3 illustrates an alternative embodiment of the present invention incorporated into a system component which requires periodic servicing or inspection.
- Process fluids will normally be directed through a filter for cleansing prior to being reused.
- the filter shown is comprised of a filter cartridge 48 encased in a filter housing 50.
- the filter housing 50 is made up of a filter bowl 52 including a sealed vent 54 and a filter head 56 including a drain 58.
- the filter bowl 52 can be disassembled from the filter head 56 when the filter cartridge 48 needs servicing or replacement.
- a leak detector system in accordance with the present invention.
- a sensor probe 64 is inserted through a hole in the flange 62 into a collector channel 66 formed in the face of the flange 62.
- the channel 66 lies between two O-rings 68 and 70 that are set into grooves 69 and 71 respectively.
- the junction leak detection system incorporated in the filter device operates the same as the dual O-ring and leak detector system of the previously described union joint embodiment.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
A junction assembly with leak detection means comprising a pair of mating surfaces (18) forming the junction of two fluid conduits, an annular containment chamber (20) formed in at least one of the surfaces (18) circumscribing the conduit passageway, a pair of spaced apart O-ring seals (26, 28) respectively disposed on opposite sides of the containment chamber (20), a fluid sensor (32) extending into communication with the containment chamber for sensing the presence of unwanted fluids therein due to the failure of an O-ring seal, and a control system (41) for responding to an output signal generated by the sensor (32) to deactivate the system in the event of failure.
Description
Specification JUNCTION ASSEMBLY WITH IiEAK DETECTION MEANS
BACKGROUND OF THE INVENTION Field of the Invention The present invention relates generally to fluid transport apparatus and more particularly to an improved O- ring sealed, fluid conducting junction assembly having means for immediately detecting O-ring failure or leakage.
Brief Description of the Prior Art In the semiconductor manufacturing industry, various corrosive, caustic and solvent materials are used and must be carefully handled to prevent damage to mechanical equipment and injury to both environment and production employees. Furthermore, processing chemicals, solvents and deionized water must be kept as pure as possible during all aspects of their handling and supply since any contact of the flow stream with a contaminant can result in defects in the manufactured product, such defects often being undetectable until after the manufacturing operation has been completed. In systems handling such fluids, any coupling or joint is susceptible of leakage or invasive contamination. To militate against such occurrences, multiple gaskets or O-ring seals are frequently used. However, even through the provision of multiple seals will normally be effective in the first instance to contain a leak resulting from failure of an inner seal, it provides no indication of the event nor does it insure that leak or invasion will not occur through an outer seal before the fact of inner seal failure is detected.
SUMMARY OF THE PRESENT INVENTION It is therefore a principal object of the present invention to provide an improved conduit junction assembly having sealing means for preventing leakage or contamination of a transported fluid in the event of a seal failure.
Another object of the present invention is to provide an improved junction assembly of the type described having a containment chamber disposed between two O-rings and having means for detecting intrusion of a fluid into the containment chamber in the event of a seal failure. Yet another object of the present invention is to provide a fluid transport system including an assembly of the type described having means for quickly sensing the intrusion of fluid into the containment chamber due to the failure of the primary O-ring and for immediately shutting down the system in the event that such failure is detected. Briefly, a preferred embodiment of the present invention includes a pair of mating surfaces forming the junction of two fluid conduits, means forming an annular containment chamber in at least one of the surfaces circumscribing the conduit passageway, a pair of spaced apart O-ring seals respectively disposed on opposite sides of the containment chamber, a fluid sensor extending into the containment chamber for sensing the presence of unwanted fluids therein due to the failure of an O-ring seal. A control system responsive to an output signal generated by the sensor issued to deactivate the system in the event of a failure. An important advantage of the present invention is that in the event of a seal failure, leakage will be immediately detected and the system will be shut down. Another advantage of the present invention is that even in the event of a seal failure, fluid leaking through the primary O-ring will not engage any contaminating surface. Another advantage of the present invention is that in the event of a primary O-ring failure, means are provided for immediate shutdown, containment of the hazardous fluid, reportability that the event has occurred, and consequently the protection of the environment and personnel against exposure to the fluids. These and other objects and advantages of the present invention will no doubt become apparent to those of ordinary
skill in the art after having read the following detailed description of a preferred embodiment which is illustrated in the several figures in the drawing.
IN THE DRAWING Fig. 1 is a schematic showing of a fluid supply system including an exploded cross section of a generalized fluid conducting junction assembly incorporating a dual O-ring seal, containment chamber and leak detector in accordance with the present invention. Fig. 2 is an end view of one of the joint members shown in Fig. l illustrating the containment channel and dual 0- ring configuration. Fig. 3 is a cross section of a fluid filter apparatus including a junction assembly in accordance with the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Fig. 1 illustrates generally a fluid supply system and conduit including two mating parts of a leak detecting coupling device such as a union joint or the like in accordance with the present invention. The first part 10 includes a first generally cylindrical conduit 12 having a first flanged end 14 with a leak detector 16 attached thereto. The face 18 of the flanged end 14, which will be adjoined to the second part of the union joint and held in engagement therewith by suitable bolts, clamps, etc., includes an annular containment chamber or collector channel 20 and two annular O-ring grooves 22 and 24. The two O-rings 26 and 28 are shown apart from their respective grooves, and related by dashed correlation lines. The channel 20 is disposed between the two O-ring grooves and their respective O-rings 26 and 28, and, in the event of a primary O-ring failure, provides a trough or chamber for containment of the escaping fluid. The leak detector 16 is attached to the flange 14 such that the sensor
probe 32 is inserted through a hole 30 in the flange 14 and into or closely proximate the channel 20. The face 18 of the first part 10 of the union joint is shown more clearly in Fig. 2 wherein the primary O-ring 26 is shown located closest to the conduit opening through which system fluid will be caused to pass. The collector channel 20 is formed in only the first part of the union joint, and is in communication with the hole 30 or socket that will house the sensor probe 32. The secondary O-ring 28 is disposed outermost from the conduit opening and, in the event of a primary O-ring failure, will prevent fluid from leaking out of the joint into the surrounding atmosphere. Referring back to Fig. 1, the second part 34 of the union joint is similarly comprised of a generally cylindrical conduit 36 having a second flanged end 38. The face 40 of the flanged end 38 includes two O-ring grooves 42 and 44, disposed so as to mirror the two O-ring grooves 22 and 24 on the first part of the joint. In an assembled union joint, the two parts are adjoined and aligned by the mating of each O-ring to it's respective groove. The two parts are fastened together by clamping, bolting or other suitable means. In the event of a primary O-ring failure, some of the fluid flowing through the joint will leak into the channel 20. In high priority systems, to prevent contamination of the leaking fluid, all rigid parts forming surfaces contacted or likely to be contacted by the fluid are made of, or are surface coated with, polyfluoroaloxyl , poly-tetrafluoroethylene or other suitable inert material. The O-rings are preferably made of high priority or encapsulated Teflon compatible with the chemical being transported. For other applications other appropriate types of materials could be used. The sensor probe 32 preferably comprises an optical device coupled to a fiber optic conductor which leads to an optical detector. The tip of the probe has an index of refraction such that when surrounded by air, exhibits a high
level of internal reflection; but when in contact with a liquid, assumes a materially different reflective characteristic. As a consequence, the level of light transmitted to the tip through one or more of the fibers of the conductor and reflected back into other receiving fibers falls below a detection threshold and a leak is signaled. Alternatively, some situations may permit suitable resistive, capacitive or other appropriate type of probe to be substituted for the aforementioned optical leak trace probe. Depending upon the application, probe 32 may extend into channel 20 and perhaps be coated with a thin layer of inert material. In some cases where it is important that no material other than that of the coupling device and O-rings be subject to contact by the transported fluid, it may be necessary that a thin wall be preserved separating the socket 30 and the channel 20. This is appropriate where the material forming the coupling device is translucent. Where the material is not translucent a sealed transparent or translucent plug of an appropriate material may be used to separate probe 32 from the channel 20. Once the sensor probe 32 detects a leak, it will transmit a signal to a controller 41 which could activate an alarm, shut off the fluid supply line by de-energizing a pump or pressure system 43, or exercise any other pre-programmed response. In one embodiment the control system 41 communicates through a data supervisor 45 to a host computer 47 which in turn provides for communication of the status of the coupling to a plurality of PC's or remote monitors. Fig. 3 illustrates an alternative embodiment of the present invention incorporated into a system component which requires periodic servicing or inspection. Process fluids will normally be directed through a filter for cleansing prior to being reused. The filter shown is comprised of a filter cartridge 48 encased in a filter housing 50. The filter housing 50 is made up of a filter bowl 52 including a
sealed vent 54 and a filter head 56 including a drain 58. The filter bowl 52 can be disassembled from the filter head 56 when the filter cartridge 48 needs servicing or replacement. Although an appropriate reservoir 55 and collection tank 57 can prevent loss of fluid through the seal 59 and valve 61 respectively, leaks can occur at the junction 46 of the filter bowl 52 and filter head 56. The illustrated filter housing is therefore improved by the addition of a leak detector system in accordance with the present invention. As in the previously described embodiment, a sensor probe 64 is inserted through a hole in the flange 62 into a collector channel 66 formed in the face of the flange 62. The channel 66 lies between two O-rings 68 and 70 that are set into grooves 69 and 71 respectively. The junction leak detection system incorporated in the filter device operates the same as the dual O-ring and leak detector system of the previously described union joint embodiment. In the case of a failure of the primary O-ring 68, fluid will leak into the channel 66, the sensor probe 60 will detect a change in internal reflection due to the introduction of the liquid into the channel, and a signal will be sent to an alarm or system controller 41. Although the present invention has been described above in terms of two particular embodiments for use in particular well known devices it will be appreciated that the invention can be incorporated into any fluid handling device in which separable components forming a flow path are included. The essence of the invention is that it first provides containment and then detection of a leak through a breached sealing means. It is therefore intended that the following claims be interpreted to cover all application, alterations and modifications that fall within the true spirit and scope of the invention. What is claimed is:
Claims
1. An improved junction assembly for fluid handling systems, comprising: first and second fluid handling means respectively including means forming first and second planar surfaces surrounding fluid passageways and adapted to face each other and be mated together to couple said first and second handling means together and to join said fluid passageways, at least one of said surfaces having an annular channel formed therein circumscribing the associated passageway and at least one of said surfaces having a first annular groove formed interiorly of said channel and at least one of said surfaces having a second annular groove formed exteriorly of said channel; means disposed between said first and second surfaces and forming a first seal around the joined passageways, said first seal being disposed in said first groove; means disposed between said first and second surfaces and forming a second seal around the joined passageways, said second seal being disposed in said second groove; and detector means for detecting the invasion of fluid through one of said first and second seals and into said channel, and for generating a signal indicative of such invasion, said detector means including a sensing probe extending at least partially through at least one of said means forming planar surfaces and into sensing communication with said channel.
2. An improved junction assembly as recited in claim 1 wherein said first and second surfaces are the facing surfaces of two flanges respectively affixed to the ends of two conduits to be coupled together.
3. An improved junction assembly as recited in claim 2 wherein said first and second seals are formed by resilient O-rings.
4. An improved junction assembly as recited in claim 1 wherein said sensing probe is an optical device capable of optically detecting the presence of fluid within said channel.
5. An improved junction assembly as recited in claim 1 wherein said first and second surfaces and said first and second seals are made of an inert material.
6. In a fluid handling system including a source of fluid, means forming a fluid passageway, coupling means for joining together various components forming said passageway, pump means for causing fluid from said source to pass through said passageway, and control means responsive to a signal indicating a system leak and operative to de-energize said pump means, an improved coupling means comprising: first and second fluid handling means respectively including means forming first and second planar surfaces surrounding fluid passageways and adapted to face each other and be mated together to couple said first and second handling means together and to join said fluid passageways, at least one of said surfaces having an annular channel formed therein circumscribing the associated passageway and at least one of said surfaces having a first annular groove formed interiorly of said channel and at least one of said surfaces having a second annular groove formed interiorly of said channel; means disposed between said first and second surfaces and forming a first seal around the joined passageways, said first seal being disposed in said first groove; means disposed between said first and second surfaces and forming a second seal around the joined passageways, said second seal being disposed in said second groove; and detector means for detecting the invasion of fluid through one of said first and, second seals and into said channel, and for generating a signal indicative of such invasion, whereby in the event of a failure of said first seal, said second seal will provide containment and said signal can be used to provide immediate system shutdown and a report that the leak has occurred, said detector means including a sensing probe extending at least partially through at least one of said means forming planar surfaces and into sensing communication with said channel.
7. In a fluid handling system as recited in claim 6 wherein said first and second surfaces are the facing surfaces of two flanges respectively affixed to the ends of two conduits to be coupled together.
8. In a fluid handling system as recited in claim 7 wherein said first and second seals are formed by resilient O-rings.
9. In a fluid handling system as recited in claim 7 wherein said sensing probe is an optical device capable of optically detecting the presence of fluid within said channel.
10. In a fluid handling system as recited in claim 6 wherein said first and second surfaces and said first and second seals are made of an inert material.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69207199T DE69207199T2 (en) | 1991-02-12 | 1992-01-09 | CONNECTING ARRANGEMENT WITH LEAK DETECTION MEANS |
KR1019930702400A KR0128805B1 (en) | 1991-02-12 | 1992-01-09 | Junction assembly with leak detection means |
EP92904696A EP0604422B1 (en) | 1991-02-12 | 1992-01-09 | Junction assembly with leak detection means |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US656,304 | 1991-02-12 | ||
US07/656,304 US5090871A (en) | 1991-02-12 | 1991-02-12 | Junction assembly with leak detection means |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992014058A1 true WO1992014058A1 (en) | 1992-08-20 |
Family
ID=24632493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1992/000154 WO1992014058A1 (en) | 1991-02-12 | 1992-01-09 | Junction assembly with leak detection means |
Country Status (7)
Country | Link |
---|---|
US (1) | US5090871A (en) |
EP (1) | EP0604422B1 (en) |
JP (2) | JPH06501300A (en) |
KR (1) | KR0128805B1 (en) |
AT (1) | ATE132234T1 (en) |
DE (1) | DE69207199T2 (en) |
WO (1) | WO1992014058A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998001696A1 (en) * | 1996-07-03 | 1998-01-15 | Codelast Limited | Joints |
Families Citing this family (77)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5362115A (en) * | 1992-06-05 | 1994-11-08 | Carr Ronald L | Multi-ring gasket |
US5348310A (en) * | 1992-12-28 | 1994-09-20 | The Dow Chemical Company | Double spiral-wound gasket assembly with leak detection |
US5488995A (en) * | 1993-04-30 | 1996-02-06 | Union Oil Company Of California | Mobile fire apparatus having hose coupling-vehicle brake interlock |
DE4320939A1 (en) * | 1993-06-24 | 1995-01-05 | Freudenberg Carl Fa | poetry |
CA2127957A1 (en) | 1993-09-29 | 1995-03-30 | Gerald A. Babuder | Clamped flange fitting and assembly |
US6948717B1 (en) | 1994-07-13 | 2005-09-27 | Kc Multi-Ring Products, Inc. | Joint assembly employing multi-ring gasket |
US5482618A (en) * | 1994-07-19 | 1996-01-09 | Systems Chemistry, Inc. | Flow-through, in-line filter housing |
US5580103A (en) * | 1994-07-19 | 1996-12-03 | Furon Company | Coupling device |
US5941530A (en) * | 1995-02-10 | 1999-08-24 | Fmc Corporation | Unidirectional environment barrier seal for subsea wellhead equipment and valves |
US5636753A (en) * | 1995-03-16 | 1997-06-10 | Wilkinson; Dennis | Stabilizer for plural drum stacks |
US5660417A (en) * | 1995-06-05 | 1997-08-26 | Chevron U.S.A. Inc. | Indicator for maintaining seals in flange assemblies |
US5645301A (en) * | 1995-11-13 | 1997-07-08 | Furon Company | Fluid transport coupling |
US5865971A (en) * | 1996-03-22 | 1999-02-02 | Faraday Technology, Inc. | Sealing ring with electrochemical sensing electrode |
US5947533A (en) * | 1996-08-02 | 1999-09-07 | Fisher; Ronald K. | Gasket assembly with elastomer expansion area |
US6041669A (en) * | 1996-10-02 | 2000-03-28 | Nft Incorporated | Methods of and apparatus for testing and venting drums |
US5767422A (en) * | 1996-10-02 | 1998-06-16 | Nft Incorporated | Methods of and apparatus for testing and venting drums |
EP0841516B1 (en) * | 1996-11-08 | 2000-05-17 | Karl Heinz Friedrich | Electronic measuring device for detecting leaks in sealing rings for liquid products |
US6039319A (en) * | 1997-02-24 | 2000-03-21 | Swagelok Company | Hygienic fitting with thermal expansion area for gasket |
US6000422A (en) * | 1997-05-08 | 1999-12-14 | Shigemoto & Annette Ii, Inc. | Fluid device with double containment |
DE19804329A1 (en) † | 1998-02-04 | 1999-08-05 | Knecht Filterwerke Gmbh | Liquid filter |
JPH11230352A (en) | 1998-02-10 | 1999-08-27 | Nec Corp | Sealed container and testing method thereof |
US6032958A (en) * | 1998-03-31 | 2000-03-07 | Hydril Company | Bi-directional pressure-energized metal seal |
JP2000074778A (en) * | 1998-09-02 | 2000-03-14 | Yamaha Corp | Leakage tester |
FR2789663B1 (en) * | 1999-02-15 | 2001-03-30 | Commissariat Energie Atomique | CONTINUOUSLY SEALED PACKAGING |
US6298881B1 (en) | 1999-03-16 | 2001-10-09 | Shigemoto & Annett Ii, Inc. | Modular fluid handling assembly and modular fluid handling units with double containment |
US6349947B1 (en) * | 1999-06-23 | 2002-02-26 | Mve, Inc. | High pressure chamber door seal with leak detection system |
WO2002023070A1 (en) * | 2000-09-13 | 2002-03-21 | Fitr Gesellschaft Für Innovation Im Tief- Und Rohrleitungsbau Weimar M.B.H. | Sealing system |
SE522656C2 (en) * | 2000-11-24 | 2004-02-24 | Electrolux Ab | Display device for a washing machine |
DE10129003C1 (en) * | 2001-06-15 | 2002-11-28 | Horst Kleibrink | Sealing system for highly pressurized lid/flange connections comprises a full metal ring filling out a groove in a lid to produce a small overhang on the lid base surface forming a high pressure seal together with an opposing flange surface |
US6592126B2 (en) | 2001-07-20 | 2003-07-15 | Flowserve Management Company | Mechanical seal leak detector |
DE10145566A1 (en) * | 2001-09-14 | 2003-04-03 | Sick Engineering Gmbh | Device for measuring the flow rate and / or the flow of a fluid |
DE20122896U1 (en) * | 2001-09-14 | 2009-07-16 | Sick Ag | Sensor and device for measuring the flow velocity and / or the flow of a fluid |
DE10159918B4 (en) * | 2001-12-06 | 2006-07-20 | Air Liquide Deutschland Gmbh | Gas supply system with gas sensor |
DK174764B1 (en) * | 2002-04-16 | 2003-10-27 | Pbi Dansensor As | Sample holder plate and use of one or two such sample holder plates |
US6962348B2 (en) * | 2002-07-29 | 2005-11-08 | Tokyo Electron Limited | Sealing apparatus having a single groove |
US20040177891A1 (en) * | 2003-03-11 | 2004-09-16 | Spaolonzi Mauricio Pinto | Leak detection system and method for offshore hose lines |
DE10359313B3 (en) * | 2003-12-17 | 2005-07-14 | Federal-Mogul Nürnberg GmbH | Safety device for gas cylinder is in form of protective cover in region of cylinder on fittings side |
WO2006023526A2 (en) * | 2004-08-18 | 2006-03-02 | Waters Investments Limited | Defined leak path for high pressure seal |
US8960071B2 (en) | 2004-08-18 | 2015-02-24 | Waters Technologies Corporation | Piston pump with leak diagnostic port |
JP5157249B2 (en) * | 2006-05-19 | 2013-03-06 | 三菱瓦斯化学株式会社 | Joint leak detection system |
US7387012B2 (en) * | 2006-07-14 | 2008-06-17 | Veyance Technologies, Inc. | Leak detection sensor system and method for double carcass hose |
US7509841B2 (en) * | 2006-07-14 | 2009-03-31 | Veyance Technologies, Inc. | Flexible leak detection system and method for double carcass hose |
US7641242B2 (en) * | 2006-08-12 | 2010-01-05 | Corsolutions, Llc | Compression connection |
US7692539B2 (en) | 2006-12-28 | 2010-04-06 | Rosemount Inc. | Automated mechanical integrity verification |
US20090091126A1 (en) * | 2007-10-04 | 2009-04-09 | Carns James A | Shrouded coupling assemblies for conduits |
US9360144B2 (en) * | 2007-10-22 | 2016-06-07 | The Boeing Company | Conduit with joint covered by a boot |
WO2009059326A2 (en) * | 2007-11-02 | 2009-05-07 | Entegris, Inc. | Integral face seal |
US7942452B2 (en) * | 2007-11-20 | 2011-05-17 | The Boeing Company | Flange fitting with leak sensor port |
EP2265929A1 (en) * | 2008-02-25 | 2010-12-29 | NKT Flexibles I/S | A pipe system, a fluid sensing system for a pipe system, and a method of determining a fluid component in an annulus cavity of a pipe |
JP5297061B2 (en) * | 2008-03-25 | 2013-09-25 | 三菱重工業株式会社 | Flange joint structure |
US8264347B2 (en) * | 2008-06-24 | 2012-09-11 | Trelleborg Sealing Solutions Us, Inc. | Seal system in situ lifetime measurement |
US8216463B1 (en) * | 2009-06-29 | 2012-07-10 | Baird Michael T | Refrigerator water filter cartridge with leakage indicator |
US20110186305A1 (en) * | 2010-01-29 | 2011-08-04 | Optimum Production Technologies Inc. | Gas-blanketed piping connections |
US8528385B2 (en) | 2010-12-30 | 2013-09-10 | Eaton Corporation | Leak detection system |
US9291521B2 (en) | 2010-12-30 | 2016-03-22 | Eaton Corporation | Leak detection system |
US9349621B2 (en) * | 2011-05-23 | 2016-05-24 | Lam Research Corporation | Vacuum seal arrangement useful in plasma processing chamber |
US8746041B2 (en) | 2012-01-18 | 2014-06-10 | Joseph J. Howard | Systems and methods for detecting and communicating moisture leaks in fluid conduits |
CN104126091B (en) * | 2012-04-10 | 2017-03-08 | 哈茨有限公司 | Assembling pipe joint with purification gas |
NO335676B1 (en) | 2012-12-07 | 2015-01-19 | Apl Technology As | Pipe connector for releasable connection of two connector parts in connection with gas tight connection of riser to vessel |
US20140246192A1 (en) * | 2013-03-01 | 2014-09-04 | Cameron International Corporation | Multi-stage seal for well fracturing |
AU2013201246B1 (en) * | 2013-03-04 | 2013-09-12 | Rubicon Research Pty Ltd | Seal for box culverts |
WO2014179089A1 (en) * | 2013-04-29 | 2014-11-06 | Carrier Corporation | Low leakage seal for low pressure system |
US9797514B2 (en) * | 2013-08-30 | 2017-10-24 | Schlumberger Technology Corporation | Bidirectionally testable seal configuration |
FR3011903B1 (en) * | 2013-10-14 | 2016-01-01 | Techlam Sas | FLEXIBLE JOINT FOR HYDROCARBON PIPES, METHOD OF DETECTING LEAKAGE IN SUCH JOINT, AND SYSTEM FOR DETECTING HYDROCARBON LEAKAGE IN SUCH A SEAL. |
EP2927471A1 (en) * | 2014-04-04 | 2015-10-07 | Caterpillar Motoren GmbH & Co. KG | Double-walled fuel supply line element and connecting flange for the same |
US9799201B2 (en) * | 2015-03-05 | 2017-10-24 | Honeywell International Inc. | Water heater leak detection system |
US10408386B2 (en) * | 2015-08-21 | 2019-09-10 | Fab-Tech, Inc. | Hot tap system and method for coated ductwork |
FI126927B (en) * | 2016-06-09 | 2017-08-15 | Janesko Oy | Measuring device sealing arrangement and sealing method |
EP3514851B1 (en) | 2018-01-23 | 2019-12-04 | Samsung SDI Co., Ltd. | Coolant distribution interface for a battery module housing |
WO2019146984A1 (en) * | 2018-01-23 | 2019-08-01 | 삼성에스디아이 주식회사 | Refrigerant distribution interface for battery module housing |
WO2020028357A1 (en) | 2018-07-31 | 2020-02-06 | Bio-Chem Fluidics, Inc. | Fluidic fittings comprising electro-fluidic leak detection elements and fluid handling systems incorporating the same |
US11009423B2 (en) * | 2018-08-13 | 2021-05-18 | The Boeing Company | External leak detection system to detect a leak in a conduit |
CN109458568A (en) * | 2018-12-13 | 2019-03-12 | 上海因士环保科技有限公司 | A kind of VOCs leakage miniature monitor and on-line monitoring system |
US20220196507A1 (en) * | 2020-12-23 | 2022-06-23 | Intel Corporation | Liquid cooling system leak detection improvements |
CN113309613B (en) * | 2021-05-25 | 2022-06-10 | 中国商用飞机有限责任公司 | Gas leakage detection piece, gas leakage detection assembly, bleed air pipeline structure and aircraft |
FR3128759A1 (en) * | 2021-10-28 | 2023-05-05 | Airbus | OPTIMIZED CONNECTION ASSEMBLY BETWEEN TWO PORTIONS OF A CRYOGENIC PIPE, COMPRISING A DOUBLE BARRIER, A FLUID EXPANSION CHAMBER AND A FLUID PRESENCE DETECTOR IN SAID CHAMBER. |
US12060930B1 (en) | 2023-04-26 | 2024-08-13 | Deere & Company | Sealing system for multiple fluids |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2239270A (en) * | 1940-01-31 | 1941-04-22 | John L Hutton | Device for detecting pump failure |
US3176623A (en) * | 1962-07-20 | 1965-04-06 | American Instr Co Inc | Protective system for a diaphragm pump |
US3299417A (en) * | 1962-07-24 | 1967-01-17 | Dk Mfg Company | Flexible pressure tubes and conduits |
US4288105A (en) * | 1979-02-21 | 1981-09-08 | Resistoflex Corporation | Pipe union with both pre-load dependent and independent seals |
US4838491A (en) * | 1982-08-18 | 1989-06-13 | Imperial Chemical Industries Plc | Coupling |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH396543A (en) * | 1961-12-27 | 1965-07-31 | Alpura Ag | seal |
JPS504155B1 (en) * | 1970-10-09 | 1975-02-15 | ||
JPS5045157U (en) * | 1973-08-25 | 1975-05-07 | ||
JPS533944B2 (en) * | 1973-11-08 | 1978-02-13 | ||
JPS5329533U (en) * | 1976-08-19 | 1978-03-14 | ||
US4209205A (en) * | 1977-12-20 | 1980-06-24 | Caterpillar Tractor Co. | Inspection of track assemblies |
GB2032562B (en) * | 1978-10-03 | 1982-11-24 | Marsh D | Pipe joints |
JPS5843201B2 (en) * | 1979-06-15 | 1983-09-26 | 西岡金属株式会社 | ring cutting equipment |
JPS5632990A (en) * | 1979-08-24 | 1981-04-02 | Mitsubishi Chem Ind Ltd | T-ran (guanosine-2') metahyl transferase |
JPS57169414A (en) * | 1981-04-10 | 1982-10-19 | Tokyo Eizai Kenkyusho:Kk | Skin-protecting agent |
JPS58122059A (en) * | 1982-01-14 | 1983-07-20 | Nippon Steel Corp | Bag filter type electric dust collector |
JPS6043780A (en) * | 1983-08-22 | 1985-03-08 | Akira Kawabata | Multi-purpose detector |
JPH0756401B2 (en) * | 1986-04-04 | 1995-06-14 | 富士電機株式会社 | Dust collector for tunnel |
DE3732547A1 (en) * | 1986-12-17 | 1988-06-30 | Klaus Doehrer | Device for producing and monitoring varying connections between in each case two lines for liquids and/or gases |
JPS63176909A (en) * | 1987-01-14 | 1988-07-21 | Mitsubishi Heavy Ind Ltd | Dust collection equipment |
JPS63234198A (en) * | 1987-03-24 | 1988-09-29 | 株式会社東芝 | Flange partition leakage detector |
-
1991
- 1991-02-12 US US07/656,304 patent/US5090871A/en not_active Expired - Lifetime
-
1992
- 1992-01-09 KR KR1019930702400A patent/KR0128805B1/en not_active IP Right Cessation
- 1992-01-09 WO PCT/US1992/000154 patent/WO1992014058A1/en active IP Right Grant
- 1992-01-09 AT AT92904696T patent/ATE132234T1/en not_active IP Right Cessation
- 1992-01-09 EP EP92904696A patent/EP0604422B1/en not_active Expired - Lifetime
- 1992-01-09 JP JP4505308A patent/JPH06501300A/en active Pending
- 1992-01-09 DE DE69207199T patent/DE69207199T2/en not_active Expired - Fee Related
-
1995
- 1995-05-29 JP JP006149U patent/JPH0745094U/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2239270A (en) * | 1940-01-31 | 1941-04-22 | John L Hutton | Device for detecting pump failure |
US3176623A (en) * | 1962-07-20 | 1965-04-06 | American Instr Co Inc | Protective system for a diaphragm pump |
US3299417A (en) * | 1962-07-24 | 1967-01-17 | Dk Mfg Company | Flexible pressure tubes and conduits |
US4288105A (en) * | 1979-02-21 | 1981-09-08 | Resistoflex Corporation | Pipe union with both pre-load dependent and independent seals |
US4838491A (en) * | 1982-08-18 | 1989-06-13 | Imperial Chemical Industries Plc | Coupling |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998001696A1 (en) * | 1996-07-03 | 1998-01-15 | Codelast Limited | Joints |
Also Published As
Publication number | Publication date |
---|---|
KR0128805B1 (en) | 1998-04-09 |
EP0604422B1 (en) | 1995-12-27 |
EP0604422A1 (en) | 1994-07-06 |
ATE132234T1 (en) | 1996-01-15 |
US5090871A (en) | 1992-02-25 |
EP0604422A4 (en) | 1994-03-28 |
DE69207199D1 (en) | 1996-02-08 |
DE69207199T2 (en) | 1996-08-08 |
KR930703537A (en) | 1993-11-30 |
JPH0745094U (en) | 1995-12-19 |
JPH06501300A (en) | 1994-02-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5090871A (en) | Junction assembly with leak detection means | |
JP2552957B2 (en) | Fluid control valves and systems with leak detection and containment | |
US5062770A (en) | Fluid pumping apparatus and system with leak detection and containment | |
US5452082A (en) | Flow cell with leakage detection | |
KR100389188B1 (en) | Non-contaminating pressure transducer module | |
JP3323513B2 (en) | Pressure sensor module with non-polluting body | |
FI72810C (en) | ANORDING FOER LEDNING AV VAETSKETRYCK TILL EN DIFFERENTIALTRYCKOMVANDLARE. | |
US6106246A (en) | Free-diaphragm pump | |
DK0589800T3 (en) | Plastic lined double-secured pipe system and method for detecting leaks | |
WO1995033191A1 (en) | Leak-sensing apparatus | |
US5343736A (en) | Optical leak sensor and position detector | |
WO1996035933A1 (en) | Double-diaphragm gauge protector | |
US6695593B1 (en) | Fiber optics systems for high purity pump diagnostics | |
KR20180096555A (en) | Real-time check system for leakage of hazardous chemical pipelines | |
US5203378A (en) | High-flexibility, noncollapsing lightweight hose | |
USRE38557E1 (en) | Non-contaminating pressure transducer module | |
JPS61280541A (en) | Method for detecting leakage of liquid | |
CN117622887A (en) | Leakage monitoring device and system for pulverized coal conveying pipeline | |
CN108613019A (en) | Double-skin duct leak-checking apparatus | |
CN109900637B (en) | Optical measuring device, refractometer and arrangement for optical measurement | |
JPS63277989A (en) | Photoelectric detector | |
JPH01169335A (en) | Probe for tank airtightness tester |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP KR |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LU MC NL SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1992904696 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1992904696 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1992904696 Country of ref document: EP |