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WO2019201567A1 - Procédé de fabrication d'un accumulateur de pression - Google Patents

Procédé de fabrication d'un accumulateur de pression Download PDF

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Publication number
WO2019201567A1
WO2019201567A1 PCT/EP2019/057898 EP2019057898W WO2019201567A1 WO 2019201567 A1 WO2019201567 A1 WO 2019201567A1 EP 2019057898 W EP2019057898 W EP 2019057898W WO 2019201567 A1 WO2019201567 A1 WO 2019201567A1
Authority
WO
WIPO (PCT)
Prior art keywords
reinforcing
inliner
layer
rotation
axis angle
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.)
Ceased
Application number
PCT/EP2019/057898
Other languages
German (de)
English (en)
Inventor
Thomas Lanzl
Gerald Haidenhofer
Stefan Horn
Dominik Linster
Stefan Spörl
Kevin Wild
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.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
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 Rehau AG and Co filed Critical Rehau AG and Co
Publication of WO2019201567A1 publication Critical patent/WO2019201567A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
    • B29C53/602—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels for tubular articles having closed or nearly closed ends, e.g. vessels, tanks, containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/32—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
    • 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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • F17C1/04—Protecting sheathings
    • F17C1/06—Protecting sheathings built-up from wound-on bands or filamentary material, e.g. wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
    • B29C53/62—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels rotatable about the winding axis
    • 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
    • F17C2203/066—Plastics
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2109—Moulding
    • F17C2209/2127—Moulding by blowing
    • 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
    • F17C2209/2154—Winding
    • 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
    • F17C2209/23—Manufacturing of particular parts or at special locations
    • F17C2209/234—Manufacturing of particular parts or at special locations of closing end pieces, e.g. caps
    • 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
    • F17C2260/03—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

Definitions

  • the invention relates to a method for producing a pressure accumulator, in particular for storing hydrogen in motor vehicles,
  • pressure accumulators are characterized by a lower weight with a plastic liner.
  • plastic inliners in order to be able to withstand the high pressures required for storing a sufficiently large amount of hydrogen, usually about 700 bar, such plastic inliners must be provided with a reinforcing layer on a regular basis. This is applied to the inliner, for example, by means of a braiding or winding method. By means of the braiding process, comparatively thin reinforcing layers can be achieved which withstand the above-mentioned loads. As a result, the storage capacity of the pressure accumulator increases for a given space and at the same time reinforcing material can be saved.
  • the invention has for its object to provide a method with the features described above, which ensures a more uniform distribution of the crossing areas within the reinforcing layer.
  • the inliner expediently made of plastic, is rotatably mounted on an axle, preferably on its axis of rotation, and the inliner is moved in a direction of rotation about or during the application of a first reinforcement layer Achswinkel rotated, so that when braiding a to be applied to the first Arm michslage second Arm michslage crossing areas of the adjacent first and second Arm michslage be offset from each other.
  • the aforementioned first reinforcement layer may be the innermost reinforcement layer of the reinforcement layer, which may be e.g. directly on the inliner rests.
  • one or more reinforcement layers to be located below the aforementioned "first" reinforcement layer.
  • the invention is based on the finding that a "small stacking" of the crossing regions is prevented by a comparatively small rotational movement of the inliner, and thus overall weaving can be made uniform.
  • the inliner oscillates about its axis by being turned back in the opposite direction of rotation during or after the application of a second reinforcement layer to the first reinforcement layer by a second axis angle and a third reinforcement layer is applied to the second reinforcement layer.
  • the inliner is rotated in the direction of rotation during or after the application of a second reinforcement layer to the first reinforcement layer by a second axis angle and a third reinforcement layer is applied to the second reinforcement layer. is brought.
  • the size of the second axis angle corresponds to the size of the (first) axis angle.
  • the second axis angle and the (first) axis angle may be different.
  • the inliner is rotated during or after the application of a third reinforcement layer to the second reinforcement layer by a third axis angle in the direction of rotation or counter-rotation direction and a fourth reinforcement layer is applied to the third reinforcement layer.
  • the size of the third axis angle may correspond to the size of the (first) axis angle.
  • the third axis angle and the (first) axis angle may be of different sizes.
  • the at least one axis angle at the braiding surface corresponds to a rotation by less than a mesh width of the braid, preferably the rotation being 10 - 60% of a mesh, in particular 20-30% (eg 14) or 30-40% (eg 1/3). or 40 - 60% (eg 14) corresponds to a mesh size.
  • the at least one axis angle at the braiding surface corresponds to a rotation of more than one mesh width of the braiding, e.g.
  • the twist corresponds to 110-160% of a mesh, in particular 120-130% (e.g., 14) or 130-140% (e.g., 1 1/3) or 140-160% (e.g., 14) of a mesh size.
  • the mesh size m here is the distance between the centers of two adjacent crossing regions of the first reinforcement layer in the circumferential direction of the inliner (see FIG.
  • the reinforcing layers may be constructed of band-shaped reinforcing strands braided together, each having a plurality of, preferably unidirectionally oriented, reinforcing fibers.
  • ribbon-shaped means that the width of a reinforcing strand resting on the inliner, e.g. due to the plurality of juxtaposed reinforcing fibers, at least twice, preferably at least five times, e.g. at least ten times its height.
  • the first reinforcement layer and the second reinforcement layer jointly cover the inliner at least 90%, preferably completely.
  • the reinforcing fibers may be formed as carbon and / or glass fibers.
  • the determination of the size and / or the direction of the first and / or the second and / or the third axis angle during the braiding can take place on the basis of a, preferably automated, optical online detection of the surface structure of the braiding, for example by means of a camera. So can / can eg use a computer program The size and / or direction of the axle angle (s) are calculated on the basis of the data determined by the camera.
  • the reinforcing layer after its application to the inliner, is impregnated with a resin, preferably an epoxy resin.
  • the inliner is expediently inserted into a suitable tool.
  • the resin can be introduced into the reinforcing layer by means of an infiltration (negative pressure method) or alternatively by means of an injection (overpressure method). After complete curing of the resin, the pressure accumulator is removed from the mold.
  • the inliner which expediently has a cylindrical center section, can have at least one pole cap, wherein a fiber supply cap whose outer surface is spaced from the pole region of the pole cap can be applied to the pole cap before the application of the reinforcing fibers.
  • the reinforcing fibers may be applied to the cylindrical portion of the liner and the pole portion respectively on the outer surface of the fiber reservoir, so that due to the distance between the outer surface of the fiber reservoir and the pole portion of the pole cap, the inner Armismeslagen the reinforcing layer in the pole area are provided with a fiber supply.
  • the fiber supply cap and the polar cap can jointly form a cavity during the application of the reinforcing layer.
  • the filler cap is expediently fixed during the application of the reinforcing layer by a fixing device which ensures the spacing of the fiber reservoir from the pole region during this working step.
  • the inliner can be introduced into a tool enclosing the reinforcing layer and subjected to an internal overpressure, so that the pressure accumulator presses against the inner surface of the tool.
  • the fixing device can be released after the application of the reinforcing layer and due to the internal overpressure in the inliner the fiber supply cap is pushed to the pole region and thereby released the fiber supply.
  • the invention further relates to a pressure accumulator, in particular for the storage of hydrogen, which is produced by a method according to the invention.
  • a pressure accumulator in particular for the storage of hydrogen, which is produced by a method according to the invention.
  • a pressure accumulator during a manufacturing process according to the invention for applying a reinforcing layer of the pressure accumulator in a side view or a three-dimensional view;
  • FIGS. 1a-2b are fragmentary cross-sectional views of the pressure accumulator shown in FIGS. 1a-2b during the manufacturing process;
  • FIG. 4 shows a photograph of a reinforcing layer produced according to the prior art in a sectional representation
  • FIG. 5 shows a photograph of a reinforcing layer produced according to the invention in a sectional representation
  • FIGS. 1 a, b and 2 a, b show a pressure accumulator 1 for storing hydrogen in a motor vehicle.
  • the pressure accumulator 1 has a two pole caps 2, 2 'auf usden, made of plastic, preferably polyamide inliner 3 with a cylindric middle section 4. At this middle section 4, the two pole caps 2, 2' are integrally formed.
  • the polar cap 2 of the pressure accumulator 1 additionally comprises a nozzle 5, also referred to as a boss, with an opening 6 for filling or dispensing hydrogen.
  • the polar cap 2 'provided at the opposite end of the pressure accumulator 1 additionally comprises a so-called blind boss 7, which serves only for mounting the pressure accumulator 1 in the vehicle.
  • a reinforcement layer 9 having reinforcing fibers 8 and having braided layers 9, which have braided layers 10, 10 ', 10 ", 10'" (see FIG.
  • the reinforcing fibers 8 are designed as carbon fibers in the exemplary embodiment and are only indicated individually in FIGS. 1 a to 2 b for the purpose of improving clarity.
  • the reinforcing layer 9 is shown schematically only in FIGS. 1 a and 2 a, and in FIGS. 1 b and 2 b, however, only by reinforcing fibers 8. It can be seen from FIGS. 1a and 2a that between the pole caps 2, 2 'and the reinforcing layer 9 there is respectively provided a fiber supply cap 20, 20', which during the application of the reinforcing fibers 8 to the inliner 3 a fiber supply 22 (see FIG.
  • FIGS. 2a and b show that in the finished state of the pressure accumulator 1, the shape of the fiber storage caps 20, 20 'is adapted to the outer contour of the pole caps 2, 2'.
  • the Faservorrats- caps 20, 20 'in the outer region 13 an elastic deformability, which allows the adaptation to the outer contour of the pole caps 2, 2'. This can be seen in particular from a comparison of FIGS. 1a and 2a.
  • the inliner 3 of the pressure accumulator 1 constructed from the cylindrical center section 4 with end pole caps 2, 2 'is produced by means of a plastic blow molding process.
  • the inliner 3 is braided on the outside with the reinforcing fibers 8 having multilayer reinforcing layer 9 (for simplicity of illustration, Fig. 3 shows only the innermost layers of the reinforcing layer 9, in particular the reinforcing layers 10, 10 ', 10 "and 10th '", Which will be referred to in detail).
  • the reinforcing fibers 8 are applied to the body of the inliner 3 and in the pole areas 21, 21 'correspondingly on the outer surface of the fiber storage caps 2, 2'. Due to the distance between the outer surface of the fiber storage caps 20, 20 'and the pole region 21, 21' of the pole caps 2, 2 ', the inner layers formed by the reinforcing fibers 8, i.a. the reinforcing layers 10, 10 ', 10 "and 10'" of the polishing layer 9 are provided with a fiber supply 22 in the pole regions 21, 21 '.
  • FIG. 3 shows that the fiber supply cap 20 and the polar cap 2 together with the boss 5 form a cavity 11 during the application of the reinforcing layer 9.
  • the fiber supply cap 20 is fixed by a fixing device 12, which ensures the spacing of the fiber pre-storage cap 20 from the pole region 21 during this working step.
  • the pressure accumulator 1 is introduced into an unillustrated infiltration or injection tool which completely surrounds the reinforcing layer 9 and adapted to the outer contour of the reinforcing layer 9 (not shown), the fixing device 12 is released and the inliner 3 subjected to an internal overpressure.
  • the reinforcing layer 9 applies under pressing action on the inner surface of the tool. Due to the tensile stress of the applied reinforcing fibers 8, the fiber supply cap 20 shifts to the pole region 21 in the direction of arrow z and in this case the fiber supply 22 is released.
  • the fiber storage caps 20, 20 ' adapt to the outer contour of the pole caps 2, 2', which is formed in each case by boss 5 or blind boss 7 (see also FIGS. 2a, b).
  • the outer region 13 of the fiber storage caps 20, 20 ' is elastic.
  • the transition from the rigid inner region 16 to the elastic outer region 13 of the fiber supply cap 20 with respect to the outer surface of the polar cap 2 essentially corresponds to the transition from Boss 5 to the blow molded part of the inliner 3.
  • the rigid inner region 16 of the fiber supply cap 20 abuts against the surface of the boss 5, whereas the outer region 13 adapts to a circumferential material weakening 14 of the fiber supply cap 20 to the adjacent surface contour of the blow molding of the inliner 3 under a rule elastic deformation.
  • the individual layers of the reinforcing layer 9 were applied in such a way that the reversal points 23 formed on the fiber supply cap 20 move axially in the direction of the inliner at the transition between the individual layers with increasing layer thickness 3 are moved.
  • the fiber supply cap 20 itself ensures a predetermined distance D z to the polar cap 2, which determines the size of the fiber supply 22 significantly.
  • the reinforcing layer 9 is soaked in the infiltration or injection tool with a (also not shown) resin to fill the befindli Chen between the individual reinforcing fibers 8 cavities and the strength of the reinforcing layer 9 thereby further strengthen. Due to the internal overpressure in the inliner 3, the reinforcing layer 9 is radial Pressed and thus has a reduced wall thickness. At the same time reduced by this radial compression, the total volume of the cavities between the fibers 8, which must be filled up by the resin.
  • the reinforcing fibers 8 have a multiplicity due to the braiding of the inliner 3 with a plurality of reinforcing layers 10, 10 ', 10 ", 10'” arranged one above the other of layered superimposed crossing regions 50 form.
  • the reinforcing layers 10, 10 ', 10 ", 10'” are each constructed of band-shaped reinforcing strands 60 interwoven with each other, which in turn each have a multiplicity of reinforcing fibers 8 aligned unidirectionally in the exemplary embodiment (see also FIG. 5).
  • the inliner 3 is rotatably mounted on an axis, in the exemplary embodiment on its axis of rotation x (see Fig. 1 b).
  • a first reinforcement layer 10 which in the exemplary embodiment represents the innermost reinforcement layer applied directly to the inliner 3
  • the inliner 3 is rotated about the axis x in a direction of rotation directed clockwise in FIG. so that, when braiding a second reinforcement layer 10 to be applied to the first reinforcement layer 10, intersection regions 50 of the adjacent first and second reinforcement layers 10, 10 'are offset relative to each other.
  • FIG. 4 shows the application of a second reinforcement layer 10 'to a first reinforcement layer 10 according to the prior art. Because of the lack of rotation of the inliner 3 between the application of the first reinforcement layer 10 and the second reinforcement layer 10 ', the crossing regions 50 of the two layers 10, 10' are practically directly adjacent to one another, while free spaces 70 remain in between the inliner 3 remains visible.
  • the second reinforcing layer 10 'according to the invention to the first reinforcing layer 10 shown in FIG. 5 on the other hand, after application of the first Layer 10 of the inliner 3 is first rotated by the axis angle f and thereby conditionally the second layer 10 'by half a mesh size m, that is offset by m / 2 applied.
  • the crossing regions 50 of the second reinforcing layer 10 ' lie practically exactly in the free spaces of the first reinforcing layer 10 and both layers 10, 10' jointly cover the inliner 3 (thus no longer visible) in FIG. 5.
  • the above-described rotation of the inliner 3 about its axis x during the braiding process can now take place several times.
  • the inliner 3 oscillate about its axis x by being turned back in the opposite direction of rotation after the application of the second reinforcement layer 10 'on the first reinforcement layer 10 by a second axis angle cp' and then a third reinforcement layer 10 "is applied to the second reinforcement layer 10 ( See Fig. 1 b, bottom view of the Drehwin- angle cp ').
  • the inliner 3 is again rotated in the direction of rotation after application of the second reinforcing layer 10 'to the first reinforcing layer 10 by a second axial angle cp', and then the third reinforcing layer 10 on the second reinforcing layer 10 ' Is applied (see Fig. 1 b, top view of the rotation angle cp ').
  • the size of the second axis angle cp ' may correspond to the size of the axis angle f; however, the two angles cp 'and f can also be different in size.
  • the inliner 3 can then be rotated by a third axis angle cp" in the direction of rotation or counter-rotation (see Fig. 1 b) and subsequently to the third reinforcing layer 10 ".
  • a fourth reinforcement layer 10 '" are applied.
  • size of the third axis angle cp may in turn correspond to the size of the (first) axis angle f; however, the angles cp "and cp can also be different in size.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un accumulateur de pression (1), en particulier d'accumulation d'hydrogène dans des véhicules automobiles. Une garniture intérieure (3) de l'accumulateur de pression (1) est fabriquée dans un premier temps. Puis la garniture intérieure (3) constituée de préférence de polyamide est tressée côté extérieur avec une couche d'armature (9) comportant des fibres de renforcement (8), comprenant plusieurs strates d'armature (10, 10', 10'', 10''') de sorte que les fibres de renforcement (8) forment, du fait du tressage multicouche, une pluralité de zones de croisement (50) superposées couche par couche. Selon l'invention, aux fins d'une répartition plus homogène des zones de croisement (50) à l'intérieur de la couche d'armature (9), la garniture intérieure (3) est montée de manière mobile en rotation sur un axe (x), de préférence sur son axe de rotation, et la garniture intérieure (3) est tournée dans une direction de rotation selon un angle axial (ϕ) pendant ou après l'application d'une première strate d'armature (10) de sorte que lors du tressage d'une deuxième strate d'armature (10') à appliquer sur la première strate d'armature (10), des zones de croisement (50) de la première et de la deuxième strate d'armature (10, 10') adjacentes sont disposées de manière décalée les unes par rapport aux autres.
PCT/EP2019/057898 2018-04-17 2019-03-28 Procédé de fabrication d'un accumulateur de pression Ceased WO2019201567A1 (fr)

Applications Claiming Priority (2)

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DE102018109018.8 2018-04-17
DE102018109018.8A DE102018109018A1 (de) 2018-04-17 2018-04-17 Verfahren zur Herstellung eines Druckspeichers

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WO2019201567A1 true WO2019201567A1 (fr) 2019-10-24

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
DE102020124545A1 (de) 2020-09-21 2022-03-24 Bayerische Motoren Werke Aktiengesellschaft Druckbehälter und Druckbehältersystem

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US5575875A (en) * 1994-02-24 1996-11-19 Wilson Sporting Goods Co. Filament wound fiber reinforced thermoplastic frame for a game racquet
US20030186038A1 (en) * 1999-11-18 2003-10-02 Ashton Larry J. Multi orientation composite material impregnated with non-liquid resin
DE102010033623A1 (de) * 2010-08-06 2012-02-09 Daimler Ag Vorrichtung zum Speichern eines Mediums und Verfahren zum Herstellen einer solchen
JP2012052588A (ja) * 2010-08-31 2012-03-15 Universal Shipbuilding Corp 圧力容器の製造法および圧力容器
WO2015078555A1 (fr) 2013-11-29 2015-06-04 Rehau Ag + Co Procédé permettant de produire un accumulateur de pression et accumulateur de pression
DE202015105815U1 (de) * 2015-09-24 2016-12-28 Rehau Ag + Co Druckbehälter zur Speicherung von Gasen oder Flüssigkeiten unter Drücken oberhalb von 200 bar

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JPS5741920A (en) * 1980-08-27 1982-03-09 Mitsubishi Electric Corp Manufacture of fiber-reinforced plastic product
US8511214B2 (en) * 2011-04-21 2013-08-20 Aga Medical Corporation Tubular structure and method for making the same

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Publication number Priority date Publication date Assignee Title
US5575875A (en) * 1994-02-24 1996-11-19 Wilson Sporting Goods Co. Filament wound fiber reinforced thermoplastic frame for a game racquet
US20030186038A1 (en) * 1999-11-18 2003-10-02 Ashton Larry J. Multi orientation composite material impregnated with non-liquid resin
DE102010033623A1 (de) * 2010-08-06 2012-02-09 Daimler Ag Vorrichtung zum Speichern eines Mediums und Verfahren zum Herstellen einer solchen
JP2012052588A (ja) * 2010-08-31 2012-03-15 Universal Shipbuilding Corp 圧力容器の製造法および圧力容器
WO2015078555A1 (fr) 2013-11-29 2015-06-04 Rehau Ag + Co Procédé permettant de produire un accumulateur de pression et accumulateur de pression
DE202015105815U1 (de) * 2015-09-24 2016-12-28 Rehau Ag + Co Druckbehälter zur Speicherung von Gasen oder Flüssigkeiten unter Drücken oberhalb von 200 bar

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020124545A1 (de) 2020-09-21 2022-03-24 Bayerische Motoren Werke Aktiengesellschaft Druckbehälter und Druckbehältersystem

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