WO2002070934A1 - Systeme de securite pour conduit de fluide - Google Patents

Systeme de securite pour conduit de fluide Download PDF

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Publication number
WO2002070934A1
WO2002070934A1 PCT/US2001/006278 US0106278W WO02070934A1 WO 2002070934 A1 WO2002070934 A1 WO 2002070934A1 US 0106278 W US0106278 W US 0106278W WO 02070934 A1 WO02070934 A1 WO 02070934A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
conduit
fluid
bodies
seats
Prior art date
Application number
PCT/US2001/006278
Other languages
English (en)
Inventor
Joseph H. Abrams
Original Assignee
Smart-Hose Technologies, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Smart-Hose Technologies, Inc. filed Critical Smart-Hose Technologies, Inc.
Priority to PCT/US2001/006278 priority Critical patent/WO2002070934A1/fr
Publication of WO2002070934A1 publication Critical patent/WO2002070934A1/fr

Links

Classifications

    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/005—Devices restraining ruptured tubes from whipping
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/26—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in either direction
    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/1007—Couplings closed automatically when broken

Definitions

  • This invention relates to high pressure fluid delivery systems and more particularly to a safety system for a conduit which is part of the high pressure delivery system.
  • a prevailing problem in high pressure fluid delivery systems such as those used to fill containers with compressed gases such as oxygen, nitrogen, carbon dioxide and the like is the risk that a conduit which is part of the fluid delivery system may fail.
  • these conduits are made of hardy flexible material, such as treated and reinforced rubber, neoprene, nylon, TEFLON, stainless steel and the like.
  • the conduits fail by rupturing or splitting.
  • a hose ruptures two hazards are present.
  • the two pieces of the conduit which result from the rupture are free to whip around wildly under the force of the compressed gases which are being discharged through the ruptured conduit from the container being filled and from the discharge manifold of the fluid supply.
  • the conduit can be constrained, substantial risk of injury to personnel and damage to equipment exists.
  • a discharge of gas from the manifold and the container through the ruptured hose conduit can lead to a costly waste of gas, or even worse, can fill an environment with hazardous fumes.
  • the invention relates to a fluid conduit safety system comprising a flexible conduit.
  • a valve is at each end of the conduit.
  • Each valve includes a valve seat and a valve body.
  • the valve bodies are retained at fixed predetermined distance from each other which distance is slightly greater than the distance between the valve seats so that in normal operation the compressed fluid can pass between the valve and valve seat at each end of the conduit.
  • the valve bodies are retained at their predetermined distance from each other by an elongated cable that extends between them and through the conduit.
  • the cable would prevent the ends of the hose from whipping.
  • the invention relates to a method for stopping the flow of fluid through a conduit which has failed and preventing the conduit from whipping. It comprises the steps of providing a flexible conduit with a first valve member at each end of the conduit where the first valve members are spaced from each other a predetermined distance.
  • a second valve member is provided adjacent each of the first valve members with means for retaining the second valve members a second predetermined distance from each other which second distance is greater than the distance between the first valve members.
  • Means are provided for restraining the second valve members from moving relative to the conduit until the conduit fails whereupon the first and second valve members engage each other and block flow through the conduit.
  • FIG. 1 is a schematic drawing of an apparatus for filling cylinder with compressed fluid under high pressure
  • FIG. 2 is a view of a conduit constructed in accordance with a presently preferred form of the invention with the valves therein positioned to permit fluid flow;
  • FIG. 3 is a section view taken along lines 4—4 of FIG. 2;
  • FIG. 4 is a view similar to FIG. 3 but showing the valves positioned to block fluid flow;
  • FIG. 5 is a diagram of a fluid/gas transport vehicle delivering or receiving fluid/gas to or from a source/destination through fluid/gas conduit safety system in accordance with the present invention
  • FIG. 6 is a cut away view of a breakaway connector for use with a fluid/gas conduit safety system in accordance with the present invention.
  • FIG. 7 is a cut away view of a breakaway connector for use with a fluid/gas conduit safety system in accordance with the present invention
  • FIG. 8 is a cut away view of an additional embodiment of a fluid/gas conduit safety system in accordance with the present invention.
  • FIG. 1 a delivery system for filling containers or other destinations with compressed fluids is illustrated as comprising fluid supply 10 such as a reservoir, or fluid compressing means, or the like.
  • the supply 10 may be connected by a discharge manifold 12 to a plurality of containers 14 to which the fluid is to be transferred.
  • the fluid destinations, such as containers 14 may be gas cylinders, bulk tankers or storage tanks which are well known in the art.
  • Conduits 20 which may be elongated flexible members are connected between the discharge manifold 12 and the containers 14.
  • the conduits 20 are hoses made of reinforced neoprene, rubber, neoprene, nylon, TEFLON, stainless steel and the like so that they have a high degree of flexibility and are capable of withstanding the high pressures which they encounter from the compressed fluids that move through them.
  • Conduits 20 may be non-flexible, depending upon the particular application.
  • FIG. 2 one of the conduits 20 is shown in detail.
  • the conduit 20 includes a housing 22 at one end and an identical housing 24 at its other end.
  • the housings 22 and 24 are connectors which enable the conduit 20 to be connected other elements in the fluid handling system. Since the two housings are identical, the following detailed description of housing 22 will also suffice as a description of housing 24.
  • Housing 22 is connected to conduit 20 by a ferrule 26 which cooperates with a complementary elongated cylindrical hollow member 30 that extends from the end wall 32 of the housing 22 and into the passage 34 defined by the conduit 20.
  • the housing 22 is an elongated, hollow, cylindrical element which is connected by end wall 32 and member 30 to the conduit 20 and has threads 36 at its other end for connection to another element in the fluid handling system.
  • the housing 22 has an inner wall that includes a valve chamber 38 which is defined by a ledge 40 that faces away from end wall 32 and a tapered valve seat 42 that lies adjacent end wall 32.
  • the tapered valve seat 42 lies between the ledge 40 and the end wall 32 and faces ledge 40.
  • member 30 cooperates with the ferrule 26 to clamp the conduit 20 between them so that the housing 22 is securely connected to the conduit 20 for the receipt of and transmission of fluid under high pressure. It also serves as a cable guide as will be explained herein.
  • valve body 44 is disposed in the valve chamber 38.
  • the valve body 44 includes an elongated, cylindrical member 46 having a tapered end 48 and a rear wall 50.
  • the taper at end 48 corresponds to the taper of the valve seat 42 so that they can cooperate to prevent the flow of fluid when they are in engagement with each other.
  • a distal end 52 extends from the rear wall 50 of the valve body 40 and comprises an elongated stem-like member 54 of relatively small diameter relative to the elongated, cylindrical member 46. Stem-like member 54 extends away from the valve seat 40.
  • Each of the valve bodies 44 and stem-like members 54 include a longitudinally extending, axial passage 56 of relatively small diameter through which a relatively stiff cable 58 or other suitable flexible and bendable member of predetermined length can be received.
  • the valve body 44 may be connected to the cable 58 by swaging, welding, or other suitable means so that the cable 58 cannot separated from the valve body 44 under the strong forces which will be present should the conduit 20 rupture.
  • cable 58 is positioned inside conduit 20 in a serpentine position.
  • valve body retainers 60 and 62 are provided in housings 22 and 24 respectively. Since the two retainers 60 and 62 are identical the following detailed description of retainer 60 will also suffice as a description of retainer 62.
  • retainer 60 is a disc that includes a generally annular central member 64 having a plurality of arms 66 extending radially outwardly from it.
  • the center of the annular member 64 comprises an aperture 68.
  • Retainers 60 and 62 are disposed on ledges 40 in each housing 22 and 24. Each retainer is fixed on the ledge by being force fit, clamped, welded or secured by any suitable means that will hold it in place for a reason that will become apparent. The distance between the retainers 60 and 62 is about the same as the distance between the rear walls 50 of the valve bodies 44.
  • the member 30 and the stiffness of the cable 58 cause the valve bodies 44 to lie with their rear walls 50 against their respective retainers 60 and 62 with their respective stems 54 extending through the apertures 68.
  • conduit 20 Under normal operating conditions, compressed fluids flow through conduit 20, through the fluid passages 70 defined by the space between the arms 66 on each retainer 60 and 62 and the inner wall of the housings 22 and 24, and through the opening between each valve seat 42 and its respective valve body 44.
  • valve bodies 44 and valve seats 42 will move into engagement with each other thereby stopping the flow through the conduit 20 at each of its ends as seen in FIG. 4. Accordingly, not only will discharge from the supply manifold be stopped, but also discharge from the container being filled will be stopped.
  • the conduit 20 may fail. In this case the ends of the conduit will move with the item to which they are connected. Therefore, the valve seats 42 will be drawn away from each other and into engagement with their respective valve bodies 44 since the cable 58 will be drawn taut by the movement the conduit ends away from each other.
  • conduit 20 fails, cable 58 is released from its confinement within the conduit and can flex to permit the valve bodies 44 to move toward the valve seats 42. Further, because the cable 58 extends through the conduit 20, it will serve as a guide for a ruptured conduit, thereby preventing the ends of the conduit from being whipped about by the discharging fluid.
  • an external cable takes the place of or operates in conjunction with internal cable 58.
  • the external cable would be connected through a sealed linkage to the valve bodies, the internal cable, and/or the connection point of internal cable 58 to valve body 44.
  • internal cable 58 is a pressurized tube that retains valve bodies 44 in an open position when pressurized. When the pressure in the pressurized tube drops below a predetermined amount, there is insufficient pressure to maintain valve bodies 44 in an open position. At that point, valve bodies 44 seat with valve seats 42, closing the valve.
  • an electronic circuit measures fluid/gas flow-rate and/or pressure within the hose of conduit 20. When pressure or flow rate reaches a predetermined level, the electronic circuit signals a valve close condition. This signal would activate a valve closing means to release any retaining member that was maintaining the valve bodies in the open position, such as by severing or contracting an internal cable 58, or depressurizing an internal pressurized tube.
  • the predetermined level in such an embodiment could also be set to account for extreme changes in flow rate or pressure, if it was desired that such a condition should result in a valve closure. Such a system could provide a monitoring or early warning system for hose/system integrity.
  • valve bodies 44 and valve seats 42 are replaced by an external valve.
  • an external valve is a valve located outside or beyond housing 22.
  • the external valve is actuated through a sealed linkage. Valve closure would result from the same conditions as described above with respect to internal valve bodies 44 and valve seats 42.
  • valve body 44/valve seat 42 is used at a single end of the hose of conduit 20.
  • FIG. 5 shows a fluid/gas transport vehicle 85 connected to a source/destination container 14 through fluid/gas conduit safety system 20.
  • Transport vehicle 85 can be delivering or receiving fluid/gas, depending upon the particular application.
  • a first end of fluid/gas conduit 20 is connected to a filling container 14, while the second end of fluid/gas conduit 20 is connected to a receiving container.
  • the term filling container is meant to represent a filling source and the term receiving container is meant to represent a receiving destination, regardless of whether either or both is actually a container.
  • the exact nature of the filling container and the receiving container depends upon the ultimate application.
  • the filling container may be a transport vehicle or connected through a hose or routing system before the connection is made to the fluid/gas conduit of the present invention. A similar situation may apply to the receiving container.
  • the receiving container may be the actual use of the gas or fluid which is thus not actually contained.
  • Breakaway coupling system 90 is shown for use with the present invention. Breakaway coupling system 90 is used as an alternative form of coupling or connection to a pressurized fluid transfer or delivery system to that of the threads 36 of housing 22 shown in the previous embodiments. While not expressly shown, the valve assemblies previously described are disposed inside of the housings 22.
  • Breakaway coupling system 90 is comprised of a barb 92, a fitting 94, a release collar 96, a snap ring 98 and ball bearings 100. O-rings 102 are also shown to provide a seal. Threads 36 are shown for mating with the delivery source and/or receiving destination of the pressurized fluid, similar to threads 36 shown and described with respect to previous embodiments.
  • Barb 92 is inserted into a hose, such as the hose of conduit 20.
  • a plurality of ridges 104 may be formed on the surface of barb 92 to assist in securing barb 92 to hose 20.
  • a securing means such as a crimped ferrule 106 or screw tightened securing ring (not shown) is used to secure hose 20 to barb 92.
  • Barb 92 has grooves for o-rings 102b, 102c, and 102d. Fewer or greater number of o-ring grooves and corresponding o-rings may be used, depending upon the application. O-rings 102 act as seal to prevent leakage of pressurized fluid.
  • Barb 92 also has an indentation or groove 110, in which a ball bearing 100 can sit. In an exemplary embodiment, 12 ball bearings 100 are used with a corresponding groove 110. Fewer or greater number of ball bearings 100 and corresponding indentations or groove 110 may be used, depending upon the application.
  • Fitting 94 provides the structural detail to mount breakaway system 90 to the delivery /destination equipment for the pressurized fluid. In the exemplary embodiment shown, threads 36 are shown. Other connection or coupling means may be used as understood by those skilled in the art.
  • Fitting 94 has an opening for mating with barb 92.
  • O-rings 102b and 102c form a seal against the internal walls of the barb receiving opening of fitting 92.
  • Holes 112 extend through fitting 94 and have a diameter sufficient to receive ball bearings 100. If not blocked, ball bearings 100 can freely pass through holes 112. Holes 112 are designed to align with radiused groove 110 when barb 92 is fully inserted into fitting 94.
  • Fitting 94 also has a groove for o-ring 102a. O-rings 102a and 102d are used to seal against release collar 96.
  • a ramp sided groove 114 is for retaining a snap ring 98.
  • Ramp sided groove 114 has inclined walls, wherein the inclination of the walls determines the release force necessary to overcome the retaining spring force of snap ring 98. The force necessary to allow a release condition can be set or adjusted by varying the ramp angle of ramp sided groove 114 and/or the spring force of snap ring 98
  • Release collar 96 has a recess or clearance groove 116 for snap ring 98 and a recess or clearance groove 118 for ball bearing 100.
  • snap ring 98 is positioned in both clearance groove 116 and ramp sided groove 114, aligning and securing the components of breakaway system 90.
  • Release collar 96 can slide laterally over fitting 94.
  • release collar 96 has a tapered or stepped internal cavity which allows fitting 94 to be inserted from one side only. Upon release, this prevents fitting 94 from being pulled out along with barb 92.
  • Release collar 96 is mounted via a mounting means, such as a bracket (not shown) to the delivery and/or destination equipment.
  • breakaway system 90 Operation of breakaway system 90 is shown , first with respect to FIG. 14 with release collar 96 in the neutral or engaged position. In the neutral position, release collar 96 is positioned such that the inner wall of the opening in which fitting 94 is positioned presses against ball bearing 100, keeping ball bearing 100 pressed into groove 110 of barb 92. This downward force from the internal wall of fitting 94 maintains barb 92 locked to fitting 94, which is in turn, locked to release collar 96 by snap ring 98.
  • a force such as the pulling of hose 20 away from fitting 94 (in the release direction), pulls on barb 92. Because barb 92 is locked to fitting 94 and release collar 96 is fixedly mounted to the delivery and/or destination equipment, the barb 92/ fitting 94 combination will move laterally with respect to collar 96, from the neutral position shown in FIG. 14 to the release position shown in FIG. 13. In order for this movement to occur, the force pulling on barb 92 must be sufficient to overcome the snap ring force of snap ring 98. This force causes snap ring 98 to bear against the ramps of ramp sided groove 114. This cause the snap ring to expand and be forced out of ramp sided groove 114. This then allows fitting 94 to move relative to release collar 96.
  • FIG. 8 Still another embodiment is shown in FIG. 8, with an outer, second hose 80 surrounding an inner, hose 20 from the safety hose system. Each of the inner and outer hoses is connected to a housing, such as connector housing 22. A gap or space (cavity) 82 is defined between inner hose 20 and outer hose 80. Gap 82 is filled with a material 84 which serves to indicate whether a hose fault, such as a tear or puncture in inner hose 50 has occurred. Outer hose 80 serves as an indicator of a problem or potential problem with hose 20.
  • Pressurized gas can be sealed in gap 82 at the factory or pressurized by an optional separate fill valve shown as fill valve 86.
  • Fill valve 86 may be disposed on the outer hose or on the housing, so long as it is in fluid communication with the cavity formed between the inner and outer hoses.
  • a separate fill valve 86 allows the pressurized gas to be "topped off” to maintain pressure.
  • a separate fill valve 86 also allows for the pressurized gas to be replaced, or if desired, replaced with a different pressurized gas.
  • Such an indicator system is particularly useful where the hose failure has not caused a cut off condition, causing the valve bodies to seat, as described previously.
  • Gap 82 is filled with a pressurized fluid/gas as material 84 that will indicate that a tear, cut, puncture or other breach of outer hose 80 has occurred. For example, a pinhole type puncture may not be sufficient to activate the valve seating.
  • a pressurized fluid/gas as material 84 that will indicate that a tear, cut, puncture or other breach of outer hose 80 has occurred.
  • a pinhole type puncture may not be sufficient to activate the valve seating.
  • the hose material of the outer, second hose changes color when stretched by the increase in pressure from the inner hose leak. This change in color may be more readily identifiable to the user, indicating the leak or inner hose failure.
  • gap 82 is filled with a pressurized fluid/gas as material 84 that will indicate that a tear, cut, puncture or other breach of outer hose 80 has occurred.
  • the pressurized gas can indicate this failure condition of outer hose 80 by being a distinct color that will be recognized by a user.
  • a pressurized gas will be a different color than any fluid being transported through the hose system.
  • a pressurized gas may also be used that reacts with the fluid being transported through the hose system so that in the event of a hose failure. In this way, a first distinct color would be evident if there was only a failure with outer hose 80. A second distinct color would be evident if the pressurized gas was contaminated with the fluid being transported through the hose system. In this way, the user could tell if there was an outer hose 80 failure or a failure of both inner hose 20 and outer hose 80.
  • gap 82 is filled with a sealing material that can seal a puncture, small tear, small cut or other minor breach of either hose 20 or hose 80.
  • a sealing material would harden or flexibly harden to match the flexible properties of the respective hose when in contact with the either the fluid being transported through the hose system (in the case of a breach of hose 20) or by the outside air (in the case of a breach of outer hose 80).
  • a sealing material of this type would preferably appear as a deformation (bump, irregularity, ridge, blob) or distinct color on the surface of outer hose 80 in the case of a breach of outer hose 80.
  • a sealing material of this type, in conjunction with the material of outer hose 80 would preferably show a deformation in the shape of outer hose 80 in the event of a hose breach of inner hose 20 where there is no breach of outer hose 80.
  • a hose system of the present invention is a safety system, it is desirable that an outer hose with a sealing material in gap 82 be used in conjunction with a cut off system, such as one of those described throughout this specification. In this way, the sealing material would only serve as a temporary fix to a minor hose breach problem, with the main cut off system still in place in the event that the hose breach problem worsened or was not temporarily solved by the sealing material.
  • a sealing mechanism also controls the amount of gas that can leak into the atmosphere.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

Cette invention se rapporte à un système de sécurité pour conduit de fluide, qui comprend des vannes (44) situées à chaque extrémité du conduit (20) et qui sont raccordées par un câble souple mais relativement rigide (58). En cas de rupture du conduit, les vannes (44) se ferment, empêchant ainsi toute fuite de fluide de l'alimentation en fluide et toute fuite de fluide du récipient en cours de remplissage, tandis que simultanément le câble (58) empêche toute projection brutale des extrémités du conduit (20) risquant de causer des dommages ou des blessures. Une variante de ce système comprend un second conduit (80) qui entoure le premier conduit (20) et forme un espace libre (82), rempli de matériau via une vanne (86), afin d'indiquer toute défaillance dans le premier conduit (20), telle que déchirure ou crevaison.
PCT/US2001/006278 2001-02-28 2001-02-28 Systeme de securite pour conduit de fluide WO2002070934A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2001/006278 WO2002070934A1 (fr) 2001-02-28 2001-02-28 Systeme de securite pour conduit de fluide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2001/006278 WO2002070934A1 (fr) 2001-02-28 2001-02-28 Systeme de securite pour conduit de fluide

Publications (1)

Publication Number Publication Date
WO2002070934A1 true WO2002070934A1 (fr) 2002-09-12

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PCT/US2001/006278 WO2002070934A1 (fr) 2001-02-28 2001-02-28 Systeme de securite pour conduit de fluide

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2881206A1 (fr) * 2005-01-26 2006-07-28 Air Liquide Necessaire et dispositif de raccordement et de transfert de fluide et utilisation d'un tel dispositif
CN104976464A (zh) * 2014-04-11 2015-10-14 艾默生过程管理调节技术公司 双向软管脱离组件

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US345156A (en) * 1886-07-06 Joseph bull little
US2607227A (en) * 1947-07-17 1952-08-19 Saf T Visi Gauge Corp Liquid level gauge
US4523454A (en) * 1983-10-21 1985-06-18 Sharp Bruce R External jacket system as secondary containment for storage tanks
US4827977A (en) * 1988-10-11 1989-05-09 Husky Corporation Breakaway hose coupling
US5054523A (en) * 1990-03-23 1991-10-08 Unidynamics Corporation Containment system for flexible underground piping
US5357998A (en) * 1990-08-23 1994-10-25 Woodland Technologies, Inc. Safety system for fluid conduit
US5921266A (en) * 1997-06-03 1999-07-13 Mapco, Inc. Safety system for transfer of pressurized fluid

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US345156A (en) * 1886-07-06 Joseph bull little
US2607227A (en) * 1947-07-17 1952-08-19 Saf T Visi Gauge Corp Liquid level gauge
US4523454A (en) * 1983-10-21 1985-06-18 Sharp Bruce R External jacket system as secondary containment for storage tanks
US4827977A (en) * 1988-10-11 1989-05-09 Husky Corporation Breakaway hose coupling
US5054523A (en) * 1990-03-23 1991-10-08 Unidynamics Corporation Containment system for flexible underground piping
US5357998A (en) * 1990-08-23 1994-10-25 Woodland Technologies, Inc. Safety system for fluid conduit
US5921266A (en) * 1997-06-03 1999-07-13 Mapco, Inc. Safety system for transfer of pressurized fluid

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2881206A1 (fr) * 2005-01-26 2006-07-28 Air Liquide Necessaire et dispositif de raccordement et de transfert de fluide et utilisation d'un tel dispositif
WO2006079734A1 (fr) * 2005-01-26 2006-08-03 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Necessaire et dispositif de raccordement et de transfert de fluide et utilisation d'un tel dispositif
US8453688B2 (en) 2005-01-26 2013-06-04 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Kit and device for connecting and transferring fluid and the use of said device
CN104976464A (zh) * 2014-04-11 2015-10-14 艾默生过程管理调节技术公司 双向软管脱离组件
WO2015157586A1 (fr) * 2014-04-11 2015-10-15 Emerson Process Management Regulator Technologies, Inc. Ensemble auto-obturant de tuyau flexible bidirectionnel
US9611949B2 (en) 2014-04-11 2017-04-04 Emerson Process Management Regulator Technologies, Inc. Bi-directional hose break-away assembly

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