EP4357662A1 - Récipient composite sous pression - Google Patents

Récipient composite sous pression Download PDF

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Publication number
EP4357662A1
EP4357662A1 EP22202977.9A EP22202977A EP4357662A1 EP 4357662 A1 EP4357662 A1 EP 4357662A1 EP 22202977 A EP22202977 A EP 22202977A EP 4357662 A1 EP4357662 A1 EP 4357662A1
Authority
EP
European Patent Office
Prior art keywords
liner
plastic
base body
pressure vessel
connection assembly
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
EP22202977.9A
Other languages
German (de)
English (en)
Inventor
Rainer Puchleitner
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.)
Magna Energy Storage Systems GmbH
Original Assignee
Magna Energy Storage Systems 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 Magna Energy Storage Systems GmbH filed Critical Magna Energy Storage Systems GmbH
Priority to EP22202977.9A priority Critical patent/EP4357662A1/fr
Publication of EP4357662A1 publication Critical patent/EP4357662A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0604—Liners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0619—Single wall with two layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0305—Bosses, e.g. boss collars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2109—Moulding
    • F17C2209/2118—Moulding by injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/036—Very high pressure (>80 bar)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/013—Reducing manufacturing time or effort
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/036—Avoiding leaks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles

Definitions

  • the present invention relates to a composite pressure vessel and a method for producing a composite pressure vessel.
  • pressure vessels in particular for installation in motor vehicles, can be constructed as Type IV pressure vessels.
  • Such composite pressure vessels can be used in particular as a hydrogen tank in a hydrogen-powered motor vehicle.
  • Such pressure vessels comprise a plastic liner and a fiber-reinforced outer shell. It is known to use a so-called boss part to fill and/or remove medium from such a pressure vessel.
  • metal bosses are used to provide a suitable transition between a plastic liner and a metal-screwed valve.
  • the sealing of the metal boss part to the plastic of the liner must be solved in a suitable way, for example by using a groove and a sealing ring.
  • connection assembly in particular a valve assembly or distributor assembly, wherein the connection assembly has a tight connection to the liner and can be manufactured simply and inexpensively.
  • a further object of the invention is to provide a simple and inexpensive method for producing such a composite pressure vessel.
  • a composite pressure vessel comprising an internal liner for receiving a medium, in particular hydrogen, and a shell surrounding the liner made of a fiber-reinforced material, further comprising a connection assembly, in particular a valve assembly or distributor assembly, wherein on the one hand the connection assembly is connected to the liner in a gas-tight manner and on the other hand the connection assembly has at least one screw, plug or weld connection, wherein the connection assembly, in addition to a base body of the connection assembly, has a liner interface part, wherein the liner interface part is designed as a gas-tight overmolding of the base body with a first plastic, wherein the liner interface part is connected to the liner in a gas-tight manner by a joining process.
  • connection assembly in particular a valve assembly, which has at least one screw, plug or weld connection and also seals off the liner, thus usually being formed by a metallic boss part, can optionally be made of another, non-metallic material, since the connection of the The connection assembly to the liner is made via a plastic overmold, which can be joined gas-tight to the plastic of the liner.
  • a multi-component injection-molded part can, to a certain extent, take on the interface function of a boss part and the sealing function between boss and liner.
  • This functional integration of interface and seal means that the use of a metal boss part can be dispensed with and a simple sealing point can also be ensured by joining, in particular welding, the liner and boss.
  • the gas-tight connection of the liner interface part to the liner by a joining process is preferably carried out by fusing or welding.
  • connection assembly is preferably arranged at a front end, on the central axis of the preferably cylindrical pressure vessel.
  • the base body consists at least substantially of a second plastic, wherein the second plastic is preferably different from the first plastic, particularly preferably of polyamide.
  • the base body consists essentially of fiber-reinforced plastic, in particular with a glass fiber reinforcement, in particular polyamide with a glass fiber reinforcement.
  • the at least one screw, plug or weld connection of the connection assembly is preferably formed by a connecting element, preferably a sleeve, and the base body forms an overmolding of the connecting element, preferably the sleeve.
  • the connecting element preferably the sleeve, is preferably made of metal.
  • the connecting element can have a screw thread, in particular an internal thread, and/or a spline and/or a welding surface.
  • the liner interface part is preferably designed as a material-locking overmolding of the base body with the first plastic.
  • the first and second plastics are preferably selected such that the first plastic melts with the second plastic during overmolding.
  • the first plastic is a compatibilized plastic ("compatibilizer"), which enables an indirect connection between the plastic of the liner, preferably PE or HDPE, and the second plastic of the base body, preferably polyamide.
  • the compatibilized plastic of the liner interface part preferably forms a material-locking connection to the plastic of the liner.
  • the first plastic can in particular be PE (polyethylene) or HDPE (high density polyethylene) with a functional polymer, for example PE-MAH or HDPE-MAH (maleic anhydride).
  • PE polyethylene
  • HDPE high density polyethylene
  • a functional polymer for example PE-MAH or HDPE-MAH (maleic anhydride).
  • the first plastic of the liner interface part is preferably welded to the liner.
  • a method according to the invention for producing such a composite pressure vessel comprises overmolding a base body of the connection assembly with a first plastic in order to form the liner interface part, wherein the liner interface part is then connected to the liner by a joining process, preferably by welding, particularly preferably by laser welding.
  • the base body is first formed as an overmolding of the second plastic of at least one sleeve, which forms a screw, plug or welded connection of the connection assembly.
  • the base body is then overmolding with the first plastic in order to form the liner interface part.
  • This first plastic is then joined, preferably welded, to the liner of the pressure vessel.
  • a composite pressure vessel according to the invention is shown in a front area in which a connection assembly 2 is arranged.
  • the connection assembly 2 is arranged on an end cap of the pressure vessel and extends along the center axis of the cylindrical type IV pressure vessel in the axial direction.
  • the composite pressure vessel comprises an internal liner 1 for receiving a medium, in particular hydrogen, and a - in the Fig.1 and 2 not shown - the shell surrounding the liner 1 made of a fiber-reinforced material.
  • the pressure vessel further comprises the connection assembly 2, namely a valve assembly or distributor assembly.
  • the connection assembly 2 is connected to the liner 1 in a gas-tight manner and the connection assembly 2 has two screw, plug or welded connections 3, for example for coupling a supply and a removal pipe for the medium in the pressure vessel.
  • connection assembly 2 has a base body 4 of the connection assembly 2, which consists of a second plastic, namely polyamide.
  • the base body 4 has a fiber reinforcement, in particular a glass fiber reinforcement.
  • the connection assembly 2 also has a liner interface part 5, wherein the liner interface part 5 is designed as a gas-tight overmolding of the base body 4, in that the base body 4 has been overmolding with a first plastic.
  • the liner interface part 5 forms a material-locking overmolding of the base body 4 with the first plastic.
  • the first plastic is a compatibilized plastic that enables a material-locking connection to the plastic of the liner 1, namely HDPE.
  • the first plastic is, for example, HDPE-MAH.
  • connection module 2 can, for example, as in Fig.1 shown, be arranged on the front side of the pressure vessel such that the liner interface part 5 essentially forms a flat continuation of the liner 1 and/or lies in a recess of the liner 1 on the front side of the pressure vessel.
  • the liner interface part 5 can encompass one end of the base body 4 and/or be positively connected to the base body 4.
  • the liner interface part 5 is connected to the liner 1 in a gas-tight manner by a joining process, namely by welding, preferably by laser welding.
  • the at least one screw, plug or weld connection 3 of the connection assembly 2 is formed by a metallic sleeve 6, which can have an internal screw thread, for example.
  • the base body 4 was designed as an overmolding of the sleeve 6.
  • the base body 4 can first be formed by overmolding the two sleeves 6 with the second plastic, for example polyamide.
  • the base body 4 can be overmolded with the first plastic, for example HDPE-MAH, in order to form the liner interface part 5.
  • the first plastic for example HDPE-MAH
  • the liner interface part 5 is then welded to the liner 1.
  • the procedure can therefore include, for example, the following steps: Injection molding of the base body 4 of the connection assembly 2, i.e. the distributor and/or a drainage valve, with one or more metallic sleeves 6 for plug or screw connection, preferably made of GF-reinforced polyamide.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP22202977.9A 2022-10-21 2022-10-21 Récipient composite sous pression Pending EP4357662A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22202977.9A EP4357662A1 (fr) 2022-10-21 2022-10-21 Récipient composite sous pression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22202977.9A EP4357662A1 (fr) 2022-10-21 2022-10-21 Récipient composite sous pression

Publications (1)

Publication Number Publication Date
EP4357662A1 true EP4357662A1 (fr) 2024-04-24

Family

ID=83902980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22202977.9A Pending EP4357662A1 (fr) 2022-10-21 2022-10-21 Récipient composite sous pression

Country Status (1)

Country Link
EP (1) EP4357662A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009049948A1 (de) * 2009-10-19 2011-05-19 Kautex Maschinenbau Gmbh Druckbehälter
FR3025565A1 (fr) * 2014-09-04 2016-03-11 Inergy Automotive Systems Res Insert monobloc surmoule avec un systeme d'etancheite
CN109681769A (zh) * 2017-10-19 2019-04-26 海控复合材料科技有限公司 复合材料耐高压储运气瓶
DE102019007820A1 (de) * 2019-11-11 2020-07-16 Daimler Ag Vorrichtung zum Egalisieren einer Schweißnaht
EP2726773B1 (fr) * 2011-06-28 2020-11-04 Hexagon Ragasco AS Bossage amélioré pour récipient composite
EP4030095A1 (fr) * 2021-01-13 2022-07-20 Magna Energy Storage Systems GesmbH Procédé de fabrication d'un corps creux

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009049948A1 (de) * 2009-10-19 2011-05-19 Kautex Maschinenbau Gmbh Druckbehälter
EP2726773B1 (fr) * 2011-06-28 2020-11-04 Hexagon Ragasco AS Bossage amélioré pour récipient composite
FR3025565A1 (fr) * 2014-09-04 2016-03-11 Inergy Automotive Systems Res Insert monobloc surmoule avec un systeme d'etancheite
CN109681769A (zh) * 2017-10-19 2019-04-26 海控复合材料科技有限公司 复合材料耐高压储运气瓶
DE102019007820A1 (de) * 2019-11-11 2020-07-16 Daimler Ag Vorrichtung zum Egalisieren einer Schweißnaht
EP4030095A1 (fr) * 2021-01-13 2022-07-20 Magna Energy Storage Systems GesmbH Procédé de fabrication d'un corps creux

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