CN105333302A - Manufacturing method of wounded composite shell of high-capacity high-pressure hydrogen storage container - Google Patents
Manufacturing method of wounded composite shell of high-capacity high-pressure hydrogen storage container Download PDFInfo
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- CN105333302A CN105333302A CN201510619882.4A CN201510619882A CN105333302A CN 105333302 A CN105333302 A CN 105333302A CN 201510619882 A CN201510619882 A CN 201510619882A CN 105333302 A CN105333302 A CN 105333302A
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- bottle
- carbon fiber
- composite bed
- steel inner
- shoulder
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Classifications
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
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- 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
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- 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
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- 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
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- 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
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- 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
Abstract
The invention provides a manufacturing method of a wounded composite shell of a high-capacity high-pressure hydrogen storage container and belongs to the technical field of manufacturing of high-capacity high-pressure gas storage equipment. A steel inner container which is formed through spinning and meets the design requirement serves as an embryo, and the method includes the process that bottle openings, bottle shoulders and a bottle body are enveloped in the form of high-strength fiber through thermosetting resin and cured to form a composite structure. The manufacturing method includes the steps that the outer surface of the steel inner container is treated, an inner isolation layer is manufactured on the outer surface of the steel inner container, a high-strength carbon fiber composite layer is manufactured on the inner isolation layer through sectional treatment, a protective layer is manufactured on the outer surface of the high-strength carbon fiber composite layer, and the steel inner container intertwined with the composite layer is placed into a curing furnace to be dried, cured and shaped. Omnibearing high-strength fiber winding and strengthening are conducted on the bottle body, the bottle shoulders and the bottle openings of the steel inner container, so that the working pressure of the hydrogen storage container can reach 100 MPa and the volume can reach over 500 L.
Description
Technical field
The invention belongs to Large Copacity high-pressure gas equipment manufacturing technology field, be specifically related to the making method being wound around composite shell in a kind of Large Copacity high-pressure hydrogen storage.
Background technique
Along with the development of new energy technology, the particularly breakthrough of hydrogen energy source technology, the demand for the large-volume receptacle of accumulating hydrogen increases thereupon.Due to the condensing temperature of hydrogen lower (-252.8 DEG C), the power consumption of liquefaction is very large.It is so the high pressure, the transport of normal temperature gaseous state that adopt capacity increasing and improve withstand voltage level that the simplest, practical, economic hydrogen conveying method is appointed.Due to the difficulty in manufacturing technology, Large Copacity high-pressure hydrogen storage cylinder project is put among 863 high-tech tracking plans.
High-pressure metal material property is defined as 70MPa in current product standard.For ensureing safety, the diameter of container, thickness of pipe wall, volume are all provided with strict standard, are the features of this kind of container.The breakthrough of any index all can cause a series of great change.Huge about the technique change that the invention improving pressure and upper volume bound is adjoint at present.
At present, along with the innovation and application of composite technology, improve the volume to weight ratio of product gas cylinder by the strengthening means under compound condition and bearing capacity has had hope.Widely use composite reinforcement process in various fields, can be used for the bearing capacity of the seamless inner bag of reinforced metal and increases volumetric completely.The special technological means determined by certain experiment and rule are come composite winding high strength fibre and high-performance and are strengthened the focus that resin solid becomes composite layer to become to pay close attention in the industry.
Namely carbon fiber is the ideal material for above technique.Be wound around Al-alloy inner bag and enter the application stage.But application practice is only limitted to little volume, generally at below 120L, bearing capacity is low, general 20 ~ 35MPa.This with store up on a large scale hydrogen, transport, use condition can not compared with.Improving the hydrogen storage ability of container, by strengthening the volume of hydrogen storage vessel, the bearing capacity of hydrogen storage vessel will be improved again.And the raising of above-mentioned two aspects, not after the size increasing vessel volume, with increasing wall thickness and soluble.Because namely the Pinch technology that first increasing weldless tube wall thickness meets with is the problem of homogeneous in the rolling technique of thick walled tube.The another sealability due to hydrogen storage vessel, deadweight and Bottle structure when being wound around form many restraining factors to large volume and high pressure.Pressure is larger, requires higher to sealability, and relevant failpoint conversion produces sizable relevance with canoe; Inner bag thickeies point of shoulder and the process treating of reducing place in tube wall and spinning process and the mechanical property of material changes, require to produce irregular change to the structure of winding layer and Thickness Design; The thickness of winding layer neither only can solve with thickening, and its structure stability is also limited by the structure of bottle.So the technological method research in the hydrogen cylinder cow of large volume, ultrahigh pressure has become the problem paid close attention in industry.
Summary of the invention
The object of the invention is to provide the making method being wound around composite shell in a kind of Large Copacity high-pressure hydrogen storage, seamless steel inner bag is prepared by spinning, strengthening is wound around by means of at the bottle of steel inner bag, shoulder, the comprehensive high-intensity fiber of bottle mouth position, make hydrogen storage vessel working pressure reach 100MPa, volume reaches more than 500L requirement.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of Large Copacity high-pressure hydrogen storage is wound around the making method of composite shell, the method is based on through rotary press modelling and the steel inner bag reaching designing requirement is tire, comprise technique bottleneck, shoulder, bottle three position being realized respectively to the envelope of high-intensity fiber, the formation composite structure of solidification by thermosetting resin, its key is that the step used in said method comprises:
Step one, the process of steel outer surface of liner: comprise oil removing, purification, preservative treatment;
Step 2, on steel outer surface of liner make isolation internal layer:
Through resin-dipping and through the glass fiber bundle of pressure rolling process, from bottle left port vertically spiral reciprocating type be looped around between a bottle left port, the left shoulder of bottle, bottle portion, the right shoulder of bottle, bottle right output port, forming thickness is 2-6mm glass fibre isolation internal layer,
Step 3, isolation internal layer on gravity cascade system make powerful carbon fiber composite bed:
1) left and right port strengthening composite bed makes: through the carbon fiber bundle of insulating varnish and pressure rolling slabbing, be wound around at the region reciprocating spiral that bottle left port designs, form the left port reinforced composite layer that thickness is 5-20mm thickness, left port reinforced composite layer end face distance bottle left shoulder 5-15mm forms break-in orientation groove; By break-in orientation groove, carbon fiber bundle is directed to a bottle right output port; With the right output port reinforced composite layer in the symmetrical coiling symmetrical position of same step;
2) left and right shoulder strengthening composite bed makes in advance: by the reciprocating winding turning to the winding screw angle increments of change of setting carbon fiber bundle to realize between left and right port of break-in orientation groove, reaches the full coverage of left and right shoulder and makes the thickness of formed left and right shoulder strengthening composite bed reach the 70%-85% of design thickness;
3) making of bottle strengthening composite bed: the setting realizing back-roll helix angle in bottle end by means of break-in orientation groove, realize in whole bottle scope the reciprocating winding that helix angle is 48-65 °, while forming bottle strengthening composite bed design thickness, realize the thickening to left and right shoulder strengthening composite bed;
Step 4, on powerful carbon fiber composite bed outer surface, make protective layer:
Through resin-dipping and through the glass fiber bundle of pressure rolling process, from bottle left port vertically spiral reciprocating type be looped around between a bottle left port, the left shoulder of bottle, bottle portion, the right shoulder of bottle, bottle right output port, forming thickness is that the protection of 4-10mm glass fibre is outer;
Step 5, the steel inner bag winding composite bed inserted in curing oven dry, solidification, Shape correction.
Further: in step 3, at steel inner bag shoulder and bottle handing-over position lay by the prefabricated fibre-reinforced layer of unidirectional fiber cloth impregnation of fibers glue.
In step 3, at steel inner bag shoulder and bottleneck handing-over position lay by the prefabricated fibre-reinforced layer of unidirectional fiber cloth impregnation of fibers glue.
In step 3, the winding thickness of powerful carbon fiber composite bed is 30-80mm, and when in powerful carbon fiber composite bed winding process, thickness is more than half, inserts in curing oven by steel inner bag, the furnace temperature of 80-100 ° is adopted to carry out Procuring process, till Procuring degree occurs gel state with glue.
In step 3, in the winding process of powerful carbon fiber composite bed, spray short carbon fiber or whisker.
In step 5, adopt staged curing processing mode in curing oven, the highest solidifying temperature is between 100-180 °, and the processing time is 6 ~ 18h.
The beneficial effect adopting technique scheme to produce is: the Large Copacity high-pressure hydrogen storage that (1) adopts the making method of winding composite shell of the present invention to prepare, the pressure-bearing force pressure that can meet Large Copacity high-pressure hydrogen storage reaches 92MPa, and volume reaches the technical requirements of more than 500L; (2) by spray-on carbon fiber or whisker in the winding process of powerful carbon fiber composite bed, improve the structural strength of powerful carbon fiber composite bed and ability that is counter-bending, that stretch; (3) join position and steel inner bag shoulder and bottleneck handing-over position at steel inner bag shoulder and bottleneck straight section and set up fibre-reinforced layer, further enhance the bearing capacity of steel inner bag surrender weak spot.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the enlarged diagram of A in Fig. 1;
Fig. 3 is steel inner bag hydraulic bursting test result figure;
Fig. 4 is the making schematic diagram of left and right port strengthening composite bed and left and right shoulder strengthening composite bed;
Fig. 5 is the making effect left view of left and right shoulder strengthening composite bed;
Fig. 6 is the making schematic diagram of bottle strengthening composite bed;
Fig. 7 is high-pressure hydrogen storage hydraulic bursting test result figure;
Wherein: 1 is steel inner bag; 1-1 is glass fibre isolation internal layer; 1-2 is powerful carbon fiber composite bed; 1-2-1 is left port reinforced composite layer, and 1-2-2 is right output port reinforced composite layer, and 1-2-3 is break-in orientation groove; 1-2-4 is left shoulder strengthening composite bed; 1-2-5 is right shoulder strengthening composite bed, and 1-2-6 is bottle strengthening composite bed, and 1-3 is that glass fibre protection is outer.
Embodiment
Steel inner bag 1 material selection Cr-Mo steel 4130X in the present embodiment, it is high that this kind of material has intensity, and good toughness, resistance to hydrogen embrittlement energy, for filling the ripe steel of rock gas and hydrogen both at home and abroad.Steel inner bag 1 sized data after rotary press modelling is diameter 559mm, length 3200mm and volume 583L.The steel inner bag 1 prepared by the present embodiment spinning carries out hydraulic bursting test, photo after explosion is see Fig. 3, result shows: cut length 925mm, width 535mm, break location: longitudinally, the cylindrical shell broken of steel inner bag, cut is characterized as sheared edge, actual bursting pressure is 75.22MPa, yield pressure is 69.34MPa, Volume variation rate 12.1%, total pressure rising time 3987s.Above result shows: defect does not appear in shoulder and the bottleneck of rotary press modelling, and intensity meets the requirements; The surrender weak spot main manifestations of steel inner bag 1 is that the radial ability to bear of steel inner bag 1 bottle is inadequate.
For the pressure-bearing pressure meeting Large Copacity high-pressure hydrogen storage reaches the technical requirements of 90MPa, need adopt and be wound around strengthening composite shell to strengthen bearing capacity and to overcome the surrender weak spot existed of steel inner bag 1 own at steel inner bag 1 outer wall.Radial ability to bear, the axial ability to bear of shoulder, the radial ability to bear of bottleneck of bottle is comprised according to the surrender weak spot of finite element analysis computation and steel inner bag 1 hydraulic bursting test summary analysis bright steel inner bag 1.
In sum, referring to accompanying drawing 1-2, by winding composite shell structural design for comprising the powerful carbon fiber composite bed 1-2 of 2-6mm glass fibre isolation internal layer 1-1,30-80mm from the inside to the outside successively and outer 1-3 protected by 2-6mm glass fibre.Because inner bag is steel inner bag, powerful carbon fiber composite bed 1-2 is carbon fiber/epoxy resin, for avoiding producing electrochemical corrosion therebetween, realizing the protection to powerful carbon fiber composite bed 1-2 simultaneously, increasing glass fibre isolation internal layer 1-1 in the inner side of powerful carbon fiber composite bed 1-2; In addition; although carbon fibre material has higher intensity; but impact resistance is more weak, increases glass fibre in the outside of powerful carbon fiber composite bed 1-2 and protect outer 1-3, avoid powerful carbon fiber composite bed 1-2 directly and the contact of external environment condition from colliding with, scratching.
Referring to accompanying drawing 4-6, for meeting and realizing strengthening composite shell Structural Design Requirement, manufacturing process is adopted to comprise:
The method is based on reaching the steel inner bag 1 of designing requirement for tire through rotary press modelling, comprise technique bottleneck, shoulder, bottle three position being realized respectively to the envelope of high-intensity fiber, the formation composite structure of solidification by thermosetting resin, the step used in said method comprises:
Step one, the process of steel inner bag 1 outer surface: comprise oil removing, purification, preservative treatment;
Step 2, on steel inner bag 1 outer surface make isolation internal layer:
Through resin-dipping and through the glass fiber bundle of pressure rolling process, from bottle left port vertically spiral reciprocating type be looped around between a bottle left port, the left shoulder of bottle, bottle portion, the right shoulder of bottle, bottle right output port, forming thickness is 2-6mm glass fibre isolation internal layer 1-1,
Step 3, isolation internal layer on gravity cascade system make powerful carbon fiber composite bed 1-2:
1) left and right port strengthening composite bed makes: through the carbon fiber bundle of insulating varnish and pressure rolling slabbing, be wound around at the region reciprocating spiral that bottle left port designs, form the left port reinforced composite layer 1-2-1 that thickness is 5-20mm thickness, left port reinforced composite layer 1-2-1 end face distance bottle left shoulder 5-15mm forms break-in orientation groove 1-2-3; By break-in orientation groove 1-2-3, carbon fiber bundle is directed to a bottle right output port; With the right output port reinforced composite layer 1-2-2 in the symmetrical coiling symmetrical position of same step;
2) left and right shoulder strengthening composite bed makes in advance: by the reciprocating winding turning to the winding screw angle increments of change of setting carbon fiber bundle to realize between left and right port of break-in orientation groove 1-2-3, reaches the full coverage of left and right shoulder and makes the thickness of formed left and right shoulder strengthening composite bed 1-2-4,1-2-5 reach the 70%-85% of design thickness; Strengthen the axial bearing capacity at shoulder position.
3) making of bottle strengthening composite bed: the setting realizing back-roll helix angle in bottle end by means of break-in orientation groove 1-2-3, realize in whole bottle scope the reciprocating winding that helix angle is 48-65 °, while forming bottle strengthening composite bed 1-2-6 design thickness, realize the thickening to left and right shoulder strengthening composite bed 1-2-4,1-2-5; Strengthen the radial bearing capacity at shoulder position.
Step 4, on powerful carbon fiber composite bed outer surface, make protective layer:
Through resin-dipping and through the glass fiber bundle of pressure rolling process, from bottle left port vertically spiral reciprocating type be looped around between a bottle left port, the left shoulder of bottle, bottle portion, the right shoulder of bottle, bottle right output port, forming thickness is that outer 1-3 protected by 4-10mm glass fibre;
Step 5, the steel inner bag 1 winding composite bed inserted in curing oven dry, solidification, Shape correction.
In step 3, at steel inner bag 1 shoulder and bottle handing-over position lay by the prefabricated fibre-reinforced layer of unidirectional fiber cloth impregnation of fibers glue.Fibre-reinforced layer strengthens the bearing capacity of shoulder surrender weak spot.
In step 3, at steel inner bag 1 shoulder and bottleneck handing-over position lay by the prefabricated fibre-reinforced layer of unidirectional fiber cloth impregnation of fibers glue.Fibre-reinforced layer strengthens the bearing capacity of shoulder surrender weak spot.
In step 3, the winding thickness of powerful carbon fiber composite bed 1-2 is 30-80mm, and when in powerful carbon fiber composite bed 1-2 winding process, thickness is more than half, steel inner bag 1 is inserted in curing oven, the furnace temperature of 80-100 ° is adopted to carry out Procuring process, till Procuring degree occurs gel state with glue.
In step 3, in the winding process of powerful carbon fiber composite bed 1-2, spray short carbon fiber or whisker.Strengthen the structural strength of the powerful carbon fiber composite bed 1-2 of body and ability that is counter-bending, that stretch.
In step 5, adopt staged curing processing mode in curing oven, the highest solidifying temperature is between 100-180 °, and the processing time is 6 ~ 18h.
The high-pressure hydrogen storage adopting above-mentioned winding making method to produce is carried out hydraulic bursting test, test(ing) medium according to ST1315-2013 attached sheet " steel inner bag is wound around hydrogen storage vessel hydrostatic test bursting test code entirely ": water; Medium temperature: 5 DEG C; Ambient temperature: 9 DEG C.Test result: bursting pressure 256MPa, Volume variation rate 4%; Point initiation is at bottle position, and inner bag fracture is the pattern of 45 ° of shear lips, and " V " font is symmetrically fallen in seam broken both sides, produces in explosion without fragment; Explosion mouth edge far from gas cylinder steel seal end bottleneck end face 700mm, explosion mouth length 1000mm, width 600mm; The minimum 19.4mm of explosion mouth thickness, maximum 20.7mm, concrete pattern is see accompanying drawing 7.Above result shows: do not occur yield point in high-pressure hydrogen storage explosion, intensity meets the requirements.
Above result shows: the bursting pressure of the present embodiment is 2.8 times of design work pressure 92MPa, does not occur yield point in explosion.Show that strengthening composite shell of the present invention meets design requirement in conjunction with steel inner bag 1, and open a new road for large capacity high pressure stores up hydrogen.
Claims (6)
1. the making method of a Large Copacity high-pressure hydrogen storage winding composite shell, the method is based on through rotary press modelling and the steel inner bag (1) reaching designing requirement is tire, comprise technique bottleneck, shoulder, bottle three position being realized respectively to the envelope of high-intensity fiber, the formation composite structure of solidification by thermosetting resin, it is characterized in that the step used in said method comprises:
Step one, steel inner bag (1) outer surface process: comprise oil removing, purification, preservative treatment;
Step 2, on steel inner bag (1) outer surface make isolation internal layer:
Through resin-dipping and through the glass fiber bundle of pressure rolling process, from bottle left port vertically spiral reciprocating type be looped around between a bottle left port, the left shoulder of bottle, bottle portion, the right shoulder of bottle, bottle right output port, forming thickness is 2-6mm glass fibre isolation internal layer (1-1),
Step 3, isolation internal layer on gravity cascade system make powerful carbon fiber composite bed:
1) left and right port strengthening composite bed makes: through the carbon fiber bundle of insulating varnish and pressure rolling slabbing, be wound around at the region reciprocating spiral that bottle left port designs, form the left port reinforced composite layer (1-2-1) that thickness is 5-20mm thickness, left port reinforced composite layer (1-2-1) end face distance bottle left shoulder 5-15mm forms break-in orientation groove (1-2-3); By break-in orientation groove (1-2-3), carbon fiber bundle is directed to a bottle right output port; With the right output port reinforced composite layer (1-2-2) in the symmetrical coiling symmetrical position of same step;
2) left and right shoulder strengthening composite bed makes in advance: by the reciprocating winding turning to the winding screw angle increments of change of setting carbon fiber bundle to realize between left and right port in break-in orientation groove (1-2-3), reaches the full coverage of left and right shoulder and makes the thickness of formed left and right shoulder strengthening composite bed (1-2-4,1-2-5) reach the 70%-85% of design thickness;
3) making of bottle strengthening composite bed: the setting realizing back-roll helix angle in bottle end by means of break-in orientation groove (1-2-3), realize in whole bottle scope the reciprocating winding that helix angle is 48-65 °, while forming bottle strengthening composite bed (1-2-6) design thickness, realize the thickening to left and right shoulder strengthening composite bed (1-2-4,1-2-5);
Step 4, on powerful carbon fiber composite bed outer surface, make protective layer:
Through resin-dipping and through the glass fiber bundle of pressure rolling process, from bottle left port vertically spiral reciprocating type be looped around between a bottle left port, the left shoulder of bottle, bottle portion, the right shoulder of bottle, bottle right output port, forming thickness is 4-10mm glass fibre protection outer (1-3);
Step 5, the steel inner bag (1) winding composite bed inserted in curing oven dry, solidification, Shape correction.
2. Large Copacity high-pressure hydrogen storage according to claim 1 is wound around the making method of composite shell, it is characterized in that: in step 3, at steel inner bag (1) shoulder and bottle handing-over position lay by the prefabricated fibre-reinforced layer of unidirectional fiber cloth impregnation of fibers glue.
3. Large Copacity high-pressure hydrogen storage according to claim 1 is wound around the making method of composite shell, it is characterized in that: in step 3, at steel inner bag (1) shoulder and bottleneck handing-over position lay by the prefabricated fibre-reinforced layer of unidirectional fiber cloth impregnation of fibers glue.
4. Large Copacity high-pressure hydrogen storage according to claim 1 is wound around the making method of composite shell, it is characterized in that: in step 3, the winding thickness of powerful carbon fiber composite bed (1-2) is 30-80mm, and when in powerful carbon fiber composite bed (1-2) winding process, thickness is more than half, steel inner bag (1) is inserted in curing oven, the furnace temperature of 80-100 ° is adopted to carry out Procuring process, till Procuring degree occurs gel state with glue.
5. Large Copacity high-pressure hydrogen storage according to claim 1 is wound around the making method of composite shell, it is characterized in that: in step 3, sprays short carbon fiber or whisker in the winding process of powerful carbon fiber composite bed (1-2).
6. Large Copacity high-pressure hydrogen storage according to claim 1 is wound around the making method of composite shell, and it is characterized in that: in step 5, adopt staged curing processing mode in curing oven, the highest solidifying temperature is between 100-180 °, and the processing time is 6-18h.
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| WO2024041262A1 (en) * | 2022-08-25 | 2024-02-29 | 中材科技（苏州）有限公司 | Method for manufacturing compositely molded 99-mpa-grade hydrogen storage container for hydrogen refueling station |
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