WO2002039558A2 - Recipient sous pression et ensemble joint d'etancheite pour cable - Google Patents

Recipient sous pression et ensemble joint d'etancheite pour cable Download PDF

Info

Publication number
WO2002039558A2
WO2002039558A2 PCT/US2001/043813 US0143813W WO0239558A2 WO 2002039558 A2 WO2002039558 A2 WO 2002039558A2 US 0143813 W US0143813 W US 0143813W WO 0239558 A2 WO0239558 A2 WO 0239558A2
Authority
WO
WIPO (PCT)
Prior art keywords
cable
rings
shell
heat
tube
Prior art date
Application number
PCT/US2001/043813
Other languages
English (en)
Other versions
WO2002039558A3 (fr
Inventor
Dennis Paul Dyer
Kenneth Leroy Heybrook
Alan David Tysinger
James Reinhart
Paul Joseph Elliot
Original Assignee
General Dynamics Advanced Techology Systems, 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
Priority claimed from US09/711,616 external-priority patent/US6326550B1/en
Priority claimed from US09/711,542 external-priority patent/US6434317B1/en
Application filed by General Dynamics Advanced Techology Systems, Inc. filed Critical General Dynamics Advanced Techology Systems, Inc.
Priority to AU2002228631A priority Critical patent/AU2002228631A1/en
Priority to GB0312765A priority patent/GB2386002B/en
Publication of WO2002039558A2 publication Critical patent/WO2002039558A2/fr
Publication of WO2002039558A3 publication Critical patent/WO2002039558A3/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4415—Cables for special applications
    • G02B6/4427—Pressure resistant cables, e.g. undersea cables
    • G02B6/4428—Penetrator systems in pressure-resistant devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/013—Sealing means for cable inlets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H02G15/12—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes for incorporating transformers, loading coils or amplifiers
    • H02G15/14—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes for incorporating transformers, loading coils or amplifiers specially adapted for submarine cables

Definitions

  • This invention relates generally to a pressure vessel and cable seal assembly, and more particularly to a pressure vessel and cable seal assembly for housing electronic components in an underwater environment.
  • Underwater communication systems provide signal transmission between, or to, land-based positions.
  • a typical system generally comprises a cable for signal transmission and one or more housings containing electrical components which are spaced along the cable between the land-based positions.
  • the signal cable has a core which may include electrical conductors, fiber optic cable, or other signal transmission elements surrounded by a protective jacket.
  • Metal strength members are disposed about the core of the cable between the cable core and the outer surface of the jacket. The strength members bear the tensile and compressive loads placed on the cable while in operation.
  • the cable may carry various signals, including low voltage signals such as information and data signals, higher voltage signals for providing electrical power, or other types of signals.
  • a pressure vessel is typically a cylindrical tube with open ends capped by circular bulkheads.
  • the signal cable is terminated adjacent to each of the bulkheads in a termination assembly.
  • the termination assemblies are secured to the bulkheads and provide mechanical continuity between the cable ends and the pressure vessel while relieving the stress on the signal transmission elements of the cable.
  • the signal transmission elements pass into the pressure vessel through seals in the bulkheads for connection to the electronic components in the pressure vessel.
  • the pressure vessel assembly must protect the electronic components, signal cable and their connections from exposure to water at depths of up to 20,000 feet and pressures of up to 10,000 pounds per square inch for periods of up to 25 years. This harsh environment contributes to problems related to the performance reliability and product life of pressure vessel assemblies.
  • the termination assemblies are overmolded with polyethylene to prevent water from accessing the internal portions of the signal cable and pressure vessel.
  • high density polyethylene is molded around the cable termination assembly thereby sealing the areas between the outer surface of the cable jacket and the termination assembly.
  • portions of the cable and the pressure vessel are also overmolded with polyethylene.
  • polyethylene overmolding is not cost effective in most applications because the required molding equipment is expensive and the process time consuming thereby restricting production rates.
  • the overmolding is a difficult process, requiring a high operator skill level and has yield and reliability problems.
  • a further object of the present invention is to provide moisture protection to the electronic components in the pressure vessel.
  • a related object is to provide a simple, effective seal for the signal transmission elements passage into the pressure vessel.
  • a still further object of the present invention is to provide a seal and method for readily and simply sealing a cable termination assembly for use in connecting signal cable to the pressure vessel.
  • the termination assembly seal and method should allow for adaptability to various cable types.
  • Another object of the present invention is to provide a pressure vessel assembly which is reliable and durable enough for an extended useful life submerged in the underwater environment.
  • a pressure vessel for housing electronic components in an underwater environment and permitting connection of the components to signal transmission elements of a signal cable.
  • the pressure vessel comprises a hollow steel shell defining an interior chamber adapted to house the electronic components.
  • a layer of thermal-sprayed aluminum covers the shell.
  • the shell has an opening adapted to pass the signal transmission elements into the interior chamber.
  • a seal adapted to sealingly surround the transmission elements is disposed in the opening in the shell so that an outer peripheral surface of the seal contacts an inner peripheral surface of the opening in the shell for preventing moisture penetration into the interior chamber.
  • the seal may be formed of epoxy and the outer peripheral surface have a plurality of compressible o-rings disposed in axially-spaced circumferential grooves for contacting the inner peripheral surface of the opening in the shell.
  • an underwater telecommunication system comprising electronic components and a hollow steel shell for housing the electronic components.
  • the shell is covered by a layer of thermal- sprayed aluminum.
  • a signal cable is mechanically connected to the shell in watertight relation.
  • the signal cable includes at least one transmission element and the shell has an opening for passing the transmission element into the interior chamber for connecting the transmission element to the electronic components for signal transmission.
  • a seal surrounding the transmission element is disposed in the opening in the shell for preventing moisture penetration into the shell.
  • a cable seal for sealing the passage of a cable into a cable-receiving structure.
  • the seal comprises a first plurality of o-rings disposed along a length of the cable adjacent the cable-receiving structure and a first length of heat-shrinkable tube which fits over the cable and o-rings for compressive engagement with the cable and o-rings when the first tube is heated to prevent moisture penetration between an inner surface of the first tube and the outer surface of the cable.
  • a second plurality of o- rings is disposed over the first heat-shrinkable tube adjacent the first plurality of o- rings.
  • a second length of heat-shrinkable tube fits over the second plurality of o- rings, the first heat-shrinkable tube, the first plurality of o-rings, the cable and a portion of the cable-receiving structure for compressive engagement with the second plurality of o-rings, the first heat-shrinkable tube, the first plurality of o-rings, the cable and the portion of the cable-receiving structure when heated to prevent moisture penetration between an inner surface of the second tube and an outer surface of the cable-receiving structure and between the inner surface of the second tube and the outer surface of the cable.
  • a sealed cable end assembly comprises a structure having a through passage for receiving a cable end and means for preventing relative axial movement of the structure and cable.
  • a first plurality of o-rings is disposed along a length of the cable adjacent the cable- receiving structure.
  • a first length of heat-shrinkable tube is positioned around the cable and o-rings for compressive engagement with the cable and o-rings when the first tube is heated to prevent moisture penetration between an inner surface of the first tube and the outer surface of the cable.
  • a second plurality of o-rings is disposed over the first heat-shrinkable tube, the second plurality of o-rings positioned adjacent the first plurality of o-rings.
  • a second length of heat-shrinkable tube fits over the second plurality of o-rings, the first heat-shrinkable tube, the first plurality of o-rings, the cable and a portion of the cable-receiving structure for compressive engagement with the second plurality of o-rings, the first heat- shrinkable tube, the first plurality of o-rings, the cable and the portion of the cable- receiving structure when heated to prevent moisture penetration between an inner surface of the second tube and an outer surface of the cable-receiving structure and between the inner surface of the second tube and the outer surface of the cable.
  • a method for sealing a cable termination including a cable end positioned in an opening of a cable- receiving structure for preventing relative axial movement of the cable end and structure.
  • the sealing method comprises disposing a first plurality of o-rings along a length of the cable adjacent the cable-receiving structure and positioning a first length of heat-shrinkable tube around the cable and o-rings.
  • the first heat- shrinkable tube is heated causing the tube to compressively engage the cable and o- rings to prevent moisture penetration between an inner surface of the first tube and the outer surface of the cable.
  • a second plurality of o-rings is disposed around the first heat-shrinkable tube adjacent the first plurality of o-rings and a second length of heat-shrinkable tube is positioned around the second plurality of o-rings, the first heat-shrinkable tube, the first plurality of o-rings, the cable and a portion of the cable-receiving structure.
  • the second heat-shrinkable tube is then heated causing the tube to compressively engage the second plurality of o-rings, the first heat- shrinkable tube, the first plurality of o-rings, the cable and the portion of the cable- receiving structure to prevent moisture penetration between an inner surface of the second tube and an outer surface of the portion of the structure and between a portion of the inner surface of the second tube and the outer surface of the cable.
  • the pressure vessel assembly of the present invention provides a low cost, structurally robust, reliable, and durable device for use in underwater communication systems.
  • the thermal-sprayed aluminum coating of the steel pressure vessel provides a housing for the electronic components of the system which is resistant to corrosion, particularly galvanic corrosion in seawater.
  • the two- layers of heat-shrinkable tubes over sets of o-rings function as multiple redundant seals for the cable termination assembly.
  • the components of the pressure vessel assembly of the present invention are low cost and require minimal assembly expertise and time.
  • FIG. 1 is a perspective view of a pressure vessel assembly according to the present invention showing a portion of the cables extending from each end;
  • FIG. 2 is an exploded view of an electronics pressure vessel assembly as shown in FIG. 1;
  • FIG. 3 is a close-up exploded view of a bulkhead assembly for use with the electronics pressure vessel assembly as shown in FIG. 2;
  • FIG. 4 is a close up view of a cable seal for use in the present invention.
  • FIG. 5 is a partial cross-section of an electronics pressure vessel assembly taken along line 5-5 of FIG. 2;
  • FIG. 6 is a perspective view of a first plurality of o-rings in place along a cable leading into a cable termination assembly
  • FIG. 7 shows a first heat-shrink tube in place around the first set of o-rings shown in FIG. 6;
  • FIG. 8 shows a second set of o-rings in place around the shrunken first heat shrink tube around a cable leading into a termination assembly as shown in FIG. 7;
  • FIG 9. shows a second heat-shrink tube around the second set of o-rings shown in FIG. 8;
  • FIG. 10 shows the shrunken second heat-shrink tube around a cable leading into a termination assembly as shown in FIG. 9;
  • FIG. 11 shows a third heat-shrink tube positioned around a cable termination housing as shown in FIG. 10;
  • FIG. 12 shows the shrunken third heat-shrink tube around the cable termination housing as shown in FIG. 11;
  • FIG. 13 is a side elevational view partially cut-away of the sealed cable termination assembly shown in FIG. 12;
  • FIG. 14 is side elevational view partially cut-away of another embodiment of a sealed cable and cable termination assembly.
  • FIG. 1 a pressure vessel assembly according to the present invention, generally designated at 20, for use in an underwater communication system.
  • the pressure vessel assembly includes a pressure vessel 22, a signal cable 24, portions of which are shown extending from each end of the pressure vessel assembly 20, and a bend strain relief 26 surrounding the signal cable 24 at each end of the pressure vessel 22.
  • FIG. 2 Other components of the pressure vessel assembly 20, are seen in the exploded view of FIG. 2, including bulkheads 28, 30 for sealing the ends 32, 34 of the pressure vessel 22 in cooperation with a lock ring 36, and termination assemblies 38 at each end of the signal cable 24.
  • the pressure vessel 22 is a hollow, cylindrical shell formed from carbon or stainless steel for housing a card cage assembly 40 (shown in phantom in FIG. 2) supporting card trays carying electronic components of the communications system.
  • the pressure vessel 22 has an inner surface defining a cylindrical bore having annular seats 42 on each end.
  • the outer surface pressure vessel 22 is coated with a layer of aluminum 44 42 (FIG. 5).
  • the aluminum layer 44 is applied using a thermal spraying process.
  • Thermal spraying is a process of depositing on substrate materials molten or semi-molten materials which solidify and bond to the substrate. The process is also called metallizing and flame or metal spraying.
  • the spray materials may be in the form of wire, rod, or powder. As the materials pass through the spray unit, they are heated to a molten or semi-molten state and then projected onto the substrate.
  • TSA thermal-sprayed aluminum
  • the TSA coating improves corrosion resistance by providing a "sacrificial" aluminum anode over components susceptible to corrosion in seawater.
  • the TSA layer 44 will galvanically protect the carbon steel base material of the pressure vessel 22 thereby slowing the corrosion of the pressure vessel to a negligible level.
  • a layer of silicone aluminum sealer 46 is applied over the TSA layer 44 to further increase the life of the pressure vessel.
  • the bulkheads 28, 30 form the ends of the pressure vessel 22 and are preferably machined from the same grade of carbon steel as the pressure vessel.
  • the bulkheads 28, 30 are generally circular in cross section with an outwardly extending central cylindrical coaxial portion 48. Each bulkhead 28, 30 is secured to the card cage assembly 40.
  • One of the bulkheads 28 has a cross section which is slightly less than the diameter of the inner cylindrical bore of the pressure vessel 22 for allowing insertion of the assembled bulkheads 28, 30 and card cage assembly 40 through one end of the pressure vessel.
  • This smaller bulkhead 28 is externally threaded 50 for receiving the lock ring 36 which has an inner thread 52 for engaging the external threads 50 on the bulkhead 28 so that the inner surface of the lock ring contacts the seat (not shown) inside the end of the pressure vessel 22.
  • the outward extension 48 includes three portions of varying diameter, including a large externally threaded portion 54, a small intermediate portion 56 having external circumferential grooves, and a distal housing 58 having circumferentially-spaced threaded openings 60.
  • the bulkheads 28, 30 electrical power lines 66, fiber optic cable 68 are provided with axial openings 62 which allow them to pass signal transmission elements 64 in the signal cable 24, such as telecommunication lines 70, and the like, into the pressure vessel 22.
  • the openings 62 into the pressure vessel 22 are protected against moisture penetration using seals 72.
  • the seal comprises a cylindrical body 74 formed to correspond to the size of the outer end of the bulkhead openings 62.
  • the seal 72 is formed from a thermal setting polymeric material such as an epoxy resin or cross-linked polymer, for example, a cross-linked elastic polymer.
  • the seals 72 are formed by casting the transmission elements 64 in an epoxy base that hardens to provide a strong, non-porous moisture seal around the transmission elements 64. Short lengths of transmission elements 64 extend out from the ends of the seal 72 for connection to components of system.
  • the formed epoxy seal 72 has three, spaced annular grooves 76 for holding two radial o-rings 78 and one face-seal o-ring 80, respectively.
  • Back-up rings 82 fit in two of the radial seal grooves 76 of the epoxy seal -to prevent extrusion of the radial o-rings 78 at high pressure and also compensate for loose tolerance in the bulkhead openings 62.
  • the epoxy seals 72 are slid into the outer end of the bulkhead openings 62 for introducing the transmission elements 64 through the openings and into the pressure vessel 22 where the transmission elements may be connected to the electrical components. Insertion depth of the seals 72 into the bulkhead 30 is limited by the depth of a larger diameter outer bore of the openings 62.
  • the seals 72 are positively secured within the bores by retaining c-clips 84. so that the face seal o-ring 80 engages the bottom of the bore.
  • the radial o-rings 78 seal the periphery of the epoxy seal 72 against the inner surface of the bore to provide a fluid tight seal that prevents any fluid from reaching the interior of the pressure vessel 22.
  • the transmission element 64 ends from the outer end of the seal 72 extends externally of the bulkhead 30.
  • a fiber splice tray 86 (FIG. 3) is attached in bulkhead housing 58 using a c-clip 88 when necessary for splicing fiber optic cable.
  • a third axial opening 90 in the bulkhead is provided for vacuum evacuation of the pressure vessel 22 and for filling the evacuated vessel with nitrogen, as is known in the art
  • cable termination may be accomplished using standard cable termination assemblies 38, which are generally of the cone-in-socket or crimp type.
  • the termination assembly housing 92 is mechanically fastened to the signal cable 24 end using conventional fastening means for securing the metal strength members in the signal cable 64 to the housing 92.
  • the termination assembly 38 functions to pass the signal transmission elements 64 while assuming the mechanical stress on the signal cable 24.
  • the termination assembly housing 92 holding the terminal end of the signal cable 24 is designed to prevent the entry of water into the internal portions of the signal cable.
  • a fiber splice tray 94 is provided when necessary for splicing of fiber optic cable.
  • a carbon steel connector sleeve 96 is provided for connecting the pressure vessel 22 and termination assembly 38.
  • the ends of the sleeve 96 fit tightly over the termination assembly housing 92 and bulkhead housing 58.
  • the ends of sleeve 96 have circumferentially-spaced holes 98 in the periphery which align with corresponding holes 99 in the termination assembly housing 92 and the holes in the bulkhead housing.
  • the holes in the sleeve 96 receive screws or other fasteners (not shown) for securing the bulkhead housing 58 and the termination assembly 38.
  • the sleeve 96 houses the optical fiber splice trays assemblies 86, 94 and defines an area where other transmission elements 64 are spliced or branched.
  • the sleeve 96 thus becomes a load bearing member of the pressure vessel assembly 22 to prevent mechanical stress from being applied to the transmission elements 64.
  • the signal cable 24 is secured relative to the pressure vessel 22 such that the application of force to pull the cable from the cable termination assembly 38 will not be transmitted to connections between the signal cable transmission elements 64 and electronic components in the pressure vessel 22.
  • the internal area defined by the cable termination assembly 38, bulkhead housing 58 and sleeve 96 not otherwise occupied is substantially filled with a water blocking compound, such as a polybutene compound, to substantially prevent the entry of moisture into the area and the vessel 22.
  • a water blocking compound such as a polybutene compound
  • two opposed screw holes 60 are left open and polybutene is added to the area through one hole until the polybutene exits the opposed hole indicating the area is filled.
  • Heat-shrink tubes are known and include, for example, polyolefin polymeric materials with a low shrinking temperature such as the polyolefin marketed under the trade name "Sigmaform" by the Raychem which shrinks completely at a low temperature of about 250degrees Fahrenheit.
  • a length of cable adjacent the termination assembly housing 92 (FIG. 6) and a portion of the housing 92 are lightly abraded .
  • the abraded surfaces are then cleaned with industrial grade alcohol.
  • a first set of three o-rings 108 is installed along the cable 24 adjacent the housing 92.
  • the first heat-shrink tube 102 is positioned over the o-rings 108 and cable 24 (FIG. 7).
  • the tube 102 is selected to have a slightly greater inside diameter than the outside diameter of the o- rings 108 so that the tube slips easily over the o-rings.
  • One end of the tube 102 seats against the termination assembly housing 92 .
  • the inside of the tube 102 is coated with an adhesive sealing material which, along with the roughened cable surface, promotes adherence and sealing by the tubing 102.
  • a suitable adhesive is available under the designation "S-1030"_”from the Raychem company.
  • a heat gun (not shown) is used to shrink the diameter of the tube 102 (FIG. 8). The shrinking of the tube 102 causes a portion of an inner surface of the heat-shrinkable tube to come into compressive engagement with the outer jacket of the cable 24 and the o- rings 108 and causes the adhesive to flow providing an excellent water blocking seal even in the presence of high exterior water pressure.
  • the compressive engagement of the tube 102 with the jacket and o-rings 108 also provides a series of redundant , seals between a portion of an inner surface of the heat-shrink tube and the signal cable 24 jacket.
  • the surface of the first heat shrink tubing 102 is abraded to form a rough surface and cleaned with alcohol.
  • a second set of three o-rings 110 is installed over the first heat shrink tubing 102 just behind the first three, already-installed o-rings 108.
  • a second, larger heat-shrinkable tube 104 is positioned over the o-rings 110 and cable 24 over a portion of the termination assembly housing 92 (FIG. 9).
  • the prefened length of the second heat-shrink tube 104 is sufficient to cover the first tube 102.
  • the second tube 104 is heated and shrunk down over the cable 24, and o-rings 110 and housing 92 (FIG. 10).
  • the termination assembly housing 92 includes a peripheral flange which is engaged by the shrunken tube 104 for sealing the end of the tube 104 around the housing 92.
  • a third heat-shrinkable tube 106 is then placed over the sleeve 68 and portions of the bulkhead housing 58 and termination assembly housing 92 and shrunk into place (FIG. 12).
  • the shrunken tube 106 engages the series of grooves provided around the intermediate portion 56 of the axial extension of the bulkhead 30 for sealing the corresponding end of the tube 106.
  • the third heat-shrink tube seal works to keep moisture from the area in the sleeve 96 and to retain the polybutene in the sleeve 96.
  • the rubber bend strain 26 relief is attached to each bulkhead 28, 30 to protect the signal cable 24 from being bent at a radius that could damage the cable.
  • the bend strain relief 26 (FIG. 2) has a profiled passage extending therethrough for passing the cable 24.
  • the profiled passage has a forward bore 112 which is sized to accept the termination assembly 38.
  • the end of the bend strain relief 26 holds a metal ring 114 which is internally threaded to cooperate with the external threads of the larger portion 54 of the bulkhead extension 48 to close and seal the end of the pressure vessel assembly 20
  • Moisture ingress barriers to the electronics within the pressure vessel 22 are provided by the heat-shrinkable tubing 102, 104, 106, o-rings 108, 110, the water- excluding polybutene compound, and the epoxy seals 72.
  • the electrical components are enclosed inside a watertight pressure vessel assembly 20 with all points of possible moisture entry sealed at several levels by mechanical and fluid seals.
  • the pressure vessel assembly, due to the aluminum coating, of the present invention is particularly effective in shallow water, or "splash zones", where the oxygen content of seawater is high.
  • shallow water or "splash zones”
  • oxygen-poor seawater corrodes steel only at a rate of 0.004" per year
  • a vessel made according to the present invention is adequate for long life applications beyond 20 years.
  • the pressure vessel and cable termination assembly seals of the present invention thus provide a reliable, durable pressure vessel assembly for housing electronic components in the underwater environment.
  • the materials and production methods used result in inexpensive pressure vessels.
  • reduced product costs are realized by replacing the beryllium copper material used for conventional pressure vessels and bulkheads with carbon steel, thereby reducing costs on the order of about ten to one.
  • Epoxy cable seals described herein are about one fourth the cost of Bridgman-type seals and installation is more reliable.
  • the use of heat-shrinkable tubing to seal the termination assemblies eliminates the need for costly, specialized capital equipment for polyethylene molding and reduces manufacturing time.
  • manufacturing and assembly of the pressure vessel assembly of the present invention are less costly, less complex, require lower skill levels, and are less time-consuming than present pressure vessels.
  • the manufacturing process of the pressure vessel assembly removes process dependent characteristics inherent with present pressure vessels by providing a more robust, repeatable product.
  • means-plus-function clauses are intended to cover the structures described herein as performing the recited function and not only structural equivalents, but also equivalent structures.
  • a nail and a screw may not be structural equivalents in that a nail employs a cylindrical surface to secure wooden parts together, whereas a screw employs a helical surface, in the environment of fastening wooden parts, a nail and a screw may be equivalent structures.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Cable Accessories (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

L'invention concerne un récipient sous pression (22) destiné à renfermer des composants électroniques dans un environnement sous l'eau. Le récipient sous pression (22) comprend une enveloppe en acier creuse renfermant les composants électroniques. Une couche (44) d'aluminium vaporisée de manière thermique recouvre l'enveloppe. Un joint d'étanchéité (72) destiné à entourer hermétiquement les éléments de transmission du câble (64) passant à travers une ouverture de l'enveloppe est disposé dans l'ouverture de manière qu'une surface périphérique extérieure du joint d'étanchéité vienne en contact avec une surface périphérique intérieure de l'ouverture de l'enveloppe afin de prévenir la pénétration de l'humidité dans la chambre intérieure. Le joint pour câble (72) est destiné à fermer hermétiquement (72) le passage d'un câble dans la structure de réception du câble. Le joint (72) comprend un premier groupe de joints toriques (78 & 80) disposés sur une longueur du câble adjacente à la structure de réception du câble et une première longueur d'un tube thermorétractable (102) située au-dessus du câble et des joints toriques. Un second groupe de joints toriques (80) est disposé au-dessus du premier tube thermorétractable (102) adjacent au premier groupe de joints toriques et une seconde longueur du tube thermorétractable est placée au-dessus du second groupe de joints toriques, du premier tube thermorétractable, du premier groupe de joints toriques, du câble et d'une partie de la structure de réception du câble.
PCT/US2001/043813 2000-11-13 2001-11-13 Recipient sous pression et ensemble joint d'etancheite pour cable WO2002039558A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002228631A AU2002228631A1 (en) 2000-11-13 2001-11-13 Pressure vessel and cable seal assembly
GB0312765A GB2386002B (en) 2000-11-13 2001-11-13 Pressure vessel and cable seal assembly

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/711,616 US6326550B1 (en) 2000-11-13 2000-11-13 Cable seal
US09/711,542 2000-11-13
US09/711,542 US6434317B1 (en) 2000-11-13 2000-11-13 Pressure vessel assembly
US09/711,616 2000-11-13

Publications (2)

Publication Number Publication Date
WO2002039558A2 true WO2002039558A2 (fr) 2002-05-16
WO2002039558A3 WO2002039558A3 (fr) 2002-10-03

Family

ID=27108654

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/043813 WO2002039558A2 (fr) 2000-11-13 2001-11-13 Recipient sous pression et ensemble joint d'etancheite pour cable

Country Status (3)

Country Link
AU (1) AU2002228631A1 (fr)
GB (1) GB2386002B (fr)
WO (1) WO2002039558A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7761945B2 (en) 2004-05-28 2010-07-27 Life Support Technologies, Inc. Apparatus and methods for preventing pressure ulcers in bedfast patients
US7815668B2 (en) 2002-07-03 2010-10-19 Life Support Technologies, Inc. Methods and apparatus for light therapy
EP2354828A1 (fr) * 2004-03-12 2011-08-10 Huawei Marine Networks Co., Limited Répétiteur optique surmoulé à facteur de forme très petit
US8251057B2 (en) 2003-06-30 2012-08-28 Life Support Technologies, Inc. Hyperbaric chamber control and/or monitoring system and methods for using the same
US9737450B2 (en) 2013-09-04 2017-08-22 Microbaric Oxyygen Systems, Llc Hyperoxic therapy systems, methods and apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2481852B (en) * 2010-07-09 2014-07-16 J & S Ltd Cable connection apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5657811A (en) * 1993-06-04 1997-08-19 Pcc Composites, Inc. Cast-in hermetic electrical feed-throughs
US5672433A (en) * 1993-06-02 1997-09-30 Pcc Composites, Inc. Magnesium composite electronic packages
US6167947B1 (en) * 1998-12-18 2001-01-02 Silicon Graphics, Inc. High performance gas cooling system and method
US6332318B1 (en) * 2000-04-28 2001-12-25 Lucent Technologies Inc. Solidification engine and thermal management system for electronics

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5672433A (en) * 1993-06-02 1997-09-30 Pcc Composites, Inc. Magnesium composite electronic packages
US5657811A (en) * 1993-06-04 1997-08-19 Pcc Composites, Inc. Cast-in hermetic electrical feed-throughs
US6167947B1 (en) * 1998-12-18 2001-01-02 Silicon Graphics, Inc. High performance gas cooling system and method
US6332318B1 (en) * 2000-04-28 2001-12-25 Lucent Technologies Inc. Solidification engine and thermal management system for electronics

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7815668B2 (en) 2002-07-03 2010-10-19 Life Support Technologies, Inc. Methods and apparatus for light therapy
US8251057B2 (en) 2003-06-30 2012-08-28 Life Support Technologies, Inc. Hyperbaric chamber control and/or monitoring system and methods for using the same
EP2354828A1 (fr) * 2004-03-12 2011-08-10 Huawei Marine Networks Co., Limited Répétiteur optique surmoulé à facteur de forme très petit
US7761945B2 (en) 2004-05-28 2010-07-27 Life Support Technologies, Inc. Apparatus and methods for preventing pressure ulcers in bedfast patients
US9737450B2 (en) 2013-09-04 2017-08-22 Microbaric Oxyygen Systems, Llc Hyperoxic therapy systems, methods and apparatus
US10092471B2 (en) 2013-09-04 2018-10-09 Microbaric Oxygen Systems, Llc Hyperoxic therapy systems, methods and apparatus

Also Published As

Publication number Publication date
GB0312765D0 (en) 2003-07-09
AU2002228631A1 (en) 2002-05-21
GB2386002B (en) 2004-08-04
WO2002039558A3 (fr) 2002-10-03
GB2386002A (en) 2003-09-03

Similar Documents

Publication Publication Date Title
US6326550B1 (en) Cable seal
EP0105597B1 (fr) Système de connexion à fibre optique
US4958903A (en) Splice closure
US5183966A (en) Termination assembly with improved waterblock
EP0430533B1 (fr) Portion impérmeable de câble et moyen de le fabriquer
EP0389206B1 (fr) Jointure des câbles à fibre optique
US6434317B1 (en) Pressure vessel assembly
FI80974B (fi) Submarin telekommunikationsledning baserad pao optisk kabel.
US4598290A (en) Fiber optic penetrator for offshore oil well exploration and production
US4653846A (en) Optical fiber hermetic fixing structure of feedthrough for optical submarine repeater
EP3304665B1 (fr) Ensemble joint rigide
US20030228783A1 (en) Field installable cable termination assembly
US7526175B2 (en) Feedthrough of submarine repeater and submarine repeater
GB2228340A (en) Hermetic gland for optical fibres
CA2350586A1 (fr) Reseau de cable utilisable dans un environnement dangereux
US4717232A (en) Submarine cable joint with optoelectronic repeaters
WO2002039558A2 (fr) Recipient sous pression et ensemble joint d'etancheite pour cable
US20220050249A1 (en) Two-part and terminal connectors with conductor management device for use in hazardous environments
CA1104678A (fr) Dispositif d'etancheisation des traversees de conducteurs sur moteurs electriques
GB2399235A (en) Heat-shrink cable seal
CN105954847B (zh) 一种海陆缆接头盒
EP0493796A1 (fr) Boîte de branchement à fibre optique
EP1313190B1 (fr) Etanchéite mécanique pour cable installé dans un tube ondulé
CN212569014U (zh) 一种用于布设过程中检测海光缆导电性能的接头盒
US7189312B2 (en) Under water cable system having an earthing electrode

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PH PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

ENP Entry into the national phase in:

Ref document number: 0312765

Country of ref document: GB

Kind code of ref document: A

Free format text: PCT FILING DATE = 20011113

Format of ref document f/p: F

AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PH PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase in:

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP