WO2025149482A1 - Dispositif de raccordement de tubes a double paroi isolés sous vide - Google Patents

Dispositif de raccordement de tubes a double paroi isolés sous vide

Info

Publication number
WO2025149482A1
WO2025149482A1 PCT/EP2025/050249 EP2025050249W WO2025149482A1 WO 2025149482 A1 WO2025149482 A1 WO 2025149482A1 EP 2025050249 W EP2025050249 W EP 2025050249W WO 2025149482 A1 WO2025149482 A1 WO 2025149482A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum
double
walled
insulated
tubes
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/EP2025/050249
Other languages
German (de)
English (en)
Inventor
Julian Gregor KUNTZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PFW Aerospace GmbH
Original Assignee
PFW Aerospace GmbH
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 PFW Aerospace GmbH filed Critical PFW Aerospace GmbH
Publication of WO2025149482A1 publication Critical patent/WO2025149482A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
    • F16L39/005—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies for concentric pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D37/00—Arrangements in connection with fuel supply for power plant
    • B64D37/005—Accessories not provided for in the groups B64D37/02 - B64D37/28
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/08—Means for preventing radiation, e.g. with metal foil
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/141—Arrangements for the insulation of pipes or pipe systems in which the temperature of the medium is below that of the ambient temperature
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/143—Pre-insulated pipes
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
    • F16L59/18—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints
    • F16L59/184—Flanged joints
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
    • F16L59/21—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for expansion-compensation devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D37/00—Arrangements in connection with fuel supply for power plant
    • B64D37/30—Fuel systems for specific fuels
    • 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
    • F16L23/04—Flanged joints the flanges being connected by members tensioned in the radial plane
    • 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
    • F16L51/00—Expansion-compensation arrangements for pipe-lines
    • F16L51/02—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
    • 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
    • F16L51/00—Expansion-compensation arrangements for pipe-lines
    • F16L51/02—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
    • F16L51/025—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube with several corrugations
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies

Definitions

  • the invention relates to a device for connecting vacuum-insulated first and second double-walled pipes, the pipe ends of which are arranged opposite one another as flanges and through whose flow cross-section a gaseous or liquid cryogenic, cryogenic medium flows. Furthermore, the invention relates to the use of the device in an aircraft for conveying liquid or gaseous cryogenic media, in particular hydrogen.
  • the most well-known coupling for cryogenic liquids and gases is the so-called Johnston coupling, also known as a bayonet coupling.
  • Johnston coupling also known as a bayonet coupling.
  • This is a plug-in connection in which a vacuum-insulated inner tube is pushed into a vacuum-insulated outer tube.
  • the overlapping area of the two nested tubes extends the path that heat must travel to reach the cryogenic medium from the outside, thus contributing to the insulation. Since the vacuum space in these double-walled tubes must usually be surrounded by a metallic wall that is closed on all sides in order to permanently maintain the vacuum, the tubes in the overlapping area are also metallic and therefore conduct heat through the vacuum space along their surface in an axial direction, but not in a radial direction.
  • Previous solutions create a maximally extended path in the space between the inner and outer pipes, which are usually each highly vacuum insulated, thus extending the heat transfer across the material. This solution requires that the two coupling elements be pushed axially into one another for installation over a length that exceeds several times the pipe diameter. Typical lengths range from 300 mm to 600 mm for diameters in the range of approximately 25 mm. which better address the problem of axial mounting dimensions usually do not have a sufficiently dimensioned heat transfer for satisfactory thermal decoupling.
  • US 2023/0139421 A1 relates to a connecting arrangement for two sections of a conveying pipe for a cryogenic fluid, including an additional thermal insulation chamber and a fluid expansion chamber.
  • the disclosed arrangement comprises one end that can be at least partially inserted into a complementarily formed end, creating a sealed mechanical connection extending over several centimeters.
  • a thermal insulation chamber is provided for two pipe sections and a further thermal insulation chamber that thermally insulates the connecting zone of the two interconnected sections.
  • an expansion chamber for the cryogenic fluid is provided, which is configured such that it is equipped with a detection-sensitive sensor for cryogenic fluids, which is located in the connecting zone between the two tubular sections. This allows two pipe sections carrying a cryogenic fluid to be represented.
  • a device for connecting vacuum-insulated first and second double-walled pipes, the pipe ends of which are arranged opposite one another as flanges, and in whose flow cross-section a gaseous or liquid cryogenic, deep-cold medium flows.
  • the first and second vacuum-insulated double-walled pipes are each enclosed in their end regions by a further, third vacuum-insulated double-walled pipe, which is axially displaceable on the first and second vacuum-insulated double-walled pipes in such a way that opposing flanges become accessible.
  • the solution proposed according to the invention advantageously makes it possible to achieve a butt connection between pipe ends that does not require any axial disassembly or assembly path, since after an axial movement of the vacuum-insulated double-walled pipe into one of the end regions, a radial movement of the adjacent first and second vacuum-insulated double-walled pipes is possible.
  • the solution proposed by the invention is designed such that the third vacuum-insulated double-wall pipe covers a joint between the first and second flanges. Therefore, only a slight axial displacement of the third vacuum-insulated double-wall pipe is required to expose the joint.
  • the device proposed according to the invention is further characterized in that the connecting joint between the first and second vacuum-insulated double-wall pipes is closed and held together by means of a clamping device, in particular a V-band clamping ring.
  • the connecting joint is sealed by means of a sealing element, in particular by means of a first inner sealing ring.
  • the third vacuum-insulated double-walled pipe contains several layers of a multi-layer insulation material, comprising alternating layers of a heat-reflecting foil and a spacer layer.
  • This solution significantly reduces heat absorption by the third vacuum-insulated double-walled pipe covering the joint and, ideally, completely eliminates it.
  • the device proposed according to the invention provides that the V-band clamping ring is made of a material that has a higher coefficient of thermal expansion than the material from which the flanges at the end regions are made, so that the V-band clamping ring contracts more strongly than the flanges upon cooling. This ensures that the clamping effect of the V-band clamping ring is maintained under all operating conditions.
  • the device proposed according to the invention is designed such that sliding rings made of a PTFE material or PTFE foam are arranged on an outer casing of the first and second vacuum-insulated double-walled pipes, in particular their outer pipes, which allow the axial movement of the third vacuum-insulated double-walled pipe.
  • the vacuum-insulated double-walled pipe serving as a connecting sleeve can thus be moved more easily within its axial displacement range.
  • the device proposed according to the invention is designed such that the outer tubes are joined to the inner tubes of the double-walled tubes in a material-to-material manner in order to hermetically seal off a vacuum space inside the double-walled tubes.
  • the device proposed according to the invention provides that an axial displacement range of the third vacuum-insulated, double-walled pipe is delimited by at least one L-shaped profile ring.
  • the vacuum-insulated third double-walled pipe designed as a sliding sleeve, is fixed and the first and second vacuum-insulated double-walled pipes are held therein, wherein an external fixation is fixed by means of a clamping piece, a profile ring and an annular groove, or a removable clamping piece and an additional clamp each engage on one side of the profile ring and the connecting sleeve.
  • the device proposed according to the invention is designed such that the inner pipe of the third vacuum-insulated, double-walled pipe serving as a sliding sleeve a first metallic bellows, and the outer tubes of the first and second vacuum-insulated double-wall tubes are provided with a second metallic bellows.
  • the first and second metallic bellows can significantly extend the path for heat flow.
  • the device proposed according to the invention further provides that an air volume between the first metallic bellows on the one hand and the second metallic bellows on the other hand is filled with a filling material with low thermal conductivity. This can improve the insulation effect in the area of the connecting joint, covered by the metallic bellows.
  • annular insulation layers are filled with annular insulation inserts made of a material with low thermal conductivity.
  • a displaceable ring is arranged in the region of the connecting joint above the two outer sealing rings, which ring is positioned by at least one annularly divisible insulation layer and is made of a material which has a higher thermal volume expansion compared to the material of the vacuum-insulated double-wall pipes.
  • the overlap length between the first and second vacuum-insulated double-walled pipes and the third pipe, which is also double-walled and vacuum-insulated and serves as an insulation sleeve, extends the path that heat must flow along a metal wall to create an insulating effect.
  • Figure 4 shows a variant of the device according to the invention with insulating inserts arranged in the area of the two outer sealing rings
  • outside the second outer sealing rings 4b are several sliding rings 10, for example made of PTFE, which can also have a sealing function, also to reduce the penetration of water vapor and ice formation, but whose further function is also to improve the sliding of the sliding sleeve 3 on the outer pipes 1b, 2b.
  • An axial displacement range 36 of the sliding sleeve 3 is limited by two profile rings 11, for example, L-shaped, welded onto the outer pipes 1b, 2b. These are positioned such that one of the profile rings 11 serves as a stop for the closed position, and the other profile ring 11, attached to the opposite pipe, serves as a stop for the open position. In the closed position, the sliding sleeve 3 is positioned such that the heat flow resistance from both ends of the sliding sleeve 3 to the inner connection is almost equal. With a nearly symmetrical connection and equal pipe wall thicknesses, an inner coupling is located centrally in the sliding sleeve 3.
  • Figure 2 shows a modified version of the illustration according to Figure 1, wherein the inner tube 3a of the sliding sleeve 3 and the outer tubes 1b, 2b of the vacuum-insulated pipes are provided with metallic first and second bellows 15, 16, which are hermetically welded or soldered to the respective walls in order to maintain the vacuum therein.
  • the purpose of these first and second bellows 15, 16 in this case is to extend the path that heat must travel along the respective metal walls in order to reach the cryogenic medium from the outside, either to improve the insulating effect of the connection or to shorten the installation space of the sliding sleeve 3 in the longitudinal direction of the pipe while maintaining the same insulating effect, which thus also shortens the distance required for displacement. Since the vacuum insulated double-walled pipes are straight in the area of the connection and in the axial displacement area 36, this shortens the required distance to the next bend or branch of the vacuum insulated double-walled pipes.
  • the air volume in the first and second bellows 15, 16 is optionally filled with a filling material 17 with low thermal conductivity, which ideally also improves the sliding of the sliding sleeve 3 and has a certain degree of flexibility, such as PTFE or PTFE foam.
  • the third bellows 20 on the inner tube 3a of the vacuum-insulated sliding sleeve 3 also cover the largest possible portion, only the areas of the seal seats are excluded.
  • the entire vacuum-insulated sliding sleeve 3 exhibits greater flexibility, allowing it to be moved even when the connected vacuum-insulated double-wall pipes exhibit a bend, for example, a bend in the area of a removable clamping piece 13.
  • this removable clamping piece 13 must also be precisely designed to fit the bent pipe. This bend is not shown in Figure 3 for reasons of clarity.
  • the removable clamping piece 13 is also shaped in this case to prevent displacement of the sleeve end there in both directions.
  • an additional clamp 19 is provided on the opposite side.
  • bellows which may have to withstand higher internal pressures in the event of a failure for redundancy reasons, are wrapped with a reinforcing braid, which increases resistance to the internal pressure while still ensuring flexibility.
  • MMI multi-layer insulation material 12
  • Figure 4 shows a further embodiment of the solution proposed according to the invention, wherein the removable clamping piece 13 here has an alternative design 23 and is clamped over the sliding sleeve 3. It also engages over the stop for the closed state and thus fixes the sliding sleeve 3 against bilateral displacement relative to the first vacuum-insulated double-walled pipe.
  • an annular groove 24 is located in the outer pipe 2b of the second vacuum-insulated double-walled pipe, into which the alternative design of the clamping piece 23 engages when folded in. This simultaneously protects the second vacuum-insulated double-walled pipe from slipping out due to the internal pressure in the pipe.
  • a further filler piece in the form of an annular, separable insulation layer 27 made of the same or a similar material is provided in the central region of the connection.
  • This filler piece is designed so that it can be removed, for example by being separable or hinged, either through precisely fitting plug-in connections, through sufficient inherent flexibility of the material, or through flexible, hinged sections of the filler piece.
  • the volumes of the insulation layers 25, 26, and 27 could also be filled with an inert gas that is non-explosive upon contact with hydrogen and ideally does not condense in the operating temperature range.
  • Figure 6 also shows another movable seal 28, against which the second outer sealing rings 4b seal.
  • this movable seal 28 When closed, this movable seal 28 covers the two outer sealing rings 4b on both sides of the connecting joint 32 and is held in position by a flange at one end through the insulation layer 27. If, after opening the sliding sleeve 3, the insulation layer 27 is removed for disassembly, the movable sealing ring 28 can be pushed laterally into a cavity provided for this purpose in the first annular insulation layer 25, so that this connection is also opened and the vacuum-insulated double-wall pipes can be separated from one another by lateral displacement.
  • annular insulation layers 25, 26, 27, formed by the additional walls 1c, 1d, 2c, 2d can also be combined with the V-band clamping ring 5 described in Figures 1 to 3 and the flanges 14a, 14b instead of the movable sealing ring 28.
  • additional seals can be inserted between the inner pipe 3a of the sliding sleeve 3 and the outer pipes 1b, 2b, as is also the case in the embodiments according to Figures 1 to 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Thermal Insulation (AREA)

Abstract

L'invention se rapporte à un dispositif de raccordement de premier et deuxième tubes à double paroi isolés sous vide (1a, 1b, 1c, 1d ; 2a, 2b, 2c, 2d), dont les extrémités se présentent sous la forme de brides (14a, 14b) et se trouvent en regard l'une de l'autre, lesdits tubes présentant une section transversale d'écoulement (6) dans laquelle circule un milieu cryogénique gazeux ou liquide. Chacune des régions d'extrémité (30, 31) des premier et deuxième tubes à double paroi isolés sous vide (1a, 1b, 1c, 1d ; 2a, 2b, 2c, 2d) est entourée par un autre troisième tube à double paroi isolé sous vide (3, 3a, 3b). Le troisième tube à double paroi peut être poussé axialement sur les premier et deuxième tubes à double paroi isolés sous vide (1a, 1b, 1c, 1d ; 2a, 2b, 2c, 2d) de telle sorte que les brides (14a, 14b) se trouvant en regard l'une de l'autre sont librement accessibles. L'invention se rapporte en outre à l'utilisation du dispositif pour raccorder des tubes à double paroi isolés sous vide (1a, 1b, 1c, 1d ; 2a, 2b, 2c, 2d) dans un système de conduit dans lequel des milieux cryogéniques gazeux ou liquides circulent, en particulier dans un aéronef.
PCT/EP2025/050249 2024-01-08 2025-01-07 Dispositif de raccordement de tubes a double paroi isolés sous vide Pending WO2025149482A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102024100344.8 2024-01-08
DE102024100344.8A DE102024100344A1 (de) 2024-01-08 2024-01-08 Vorrichtung zur Verbindung doppelwandiger vakuumisolierter Rohre

Publications (1)

Publication Number Publication Date
WO2025149482A1 true WO2025149482A1 (fr) 2025-07-17

Family

ID=94341204

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/050249 Pending WO2025149482A1 (fr) 2024-01-08 2025-01-07 Dispositif de raccordement de tubes a double paroi isolés sous vide

Country Status (2)

Country Link
DE (1) DE102024100344A1 (fr)
WO (1) WO2025149482A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1567373A (en) * 1977-03-25 1980-05-14 Boc Ltd Vacuum-insulated conduit joints
US20230139421A1 (en) 2021-10-28 2023-05-04 Airbus Sas Optimized connection assembly between two portions of a supply line for a cryogenic fluid, including an additional thermal insulation chamber and a fluid expansion chamber

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3207533A (en) * 1963-01-17 1965-09-21 Donald A Van Gundy Double bayonet insulated transfer line coupling
JPWO2018021509A1 (ja) * 2016-07-29 2019-05-23 古河電気工業株式会社 輸送管
US20200362997A1 (en) * 2017-11-14 2020-11-19 Concept Group Llc Insulated connector components

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1567373A (en) * 1977-03-25 1980-05-14 Boc Ltd Vacuum-insulated conduit joints
US20230139421A1 (en) 2021-10-28 2023-05-04 Airbus Sas Optimized connection assembly between two portions of a supply line for a cryogenic fluid, including an additional thermal insulation chamber and a fluid expansion chamber

Also Published As

Publication number Publication date
DE102024100344A1 (de) 2025-07-10

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