CN113324165B - Defect-containing IV-type hydrogen storage bottle sample bottle and preparation method thereof - Google Patents
Defect-containing IV-type hydrogen storage bottle sample bottle and preparation method thereof Download PDFInfo
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- CN113324165B CN113324165B CN202110642077.9A CN202110642077A CN113324165B CN 113324165 B CN113324165 B CN 113324165B CN 202110642077 A CN202110642077 A CN 202110642077A CN 113324165 B CN113324165 B CN 113324165B
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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
- 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
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- 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
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/84—Heating or cooling
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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
- F17C1/16—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of plastics materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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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
- 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
- F17C2203/0621—Single wall with three layers
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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
- 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
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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
- 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
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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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/21—Shaping processes
- F17C2209/219—Working processes for non metal materials, e.g. extruding
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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
- F17C2209/23—Manufacturing of particular parts or at special locations
- F17C2209/232—Manufacturing of particular parts or at special locations of walls
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N2033/0078—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00 testing material properties on manufactured objects
- G01N2033/0081—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00 testing material properties on manufactured objects containers; packages; bottles
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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 present invention provides a defect-containing type IV hydrogen storage cylinder sample bottle comprising: the inner container is made of plastic materials, the winding layer is formed by carbon fibers and resin, the protective layer is formed by glass fibers and resin, wherein a defect is arranged on the inner container and/or the winding layer and used for simulating the defect of the IV-type hydrogen storage bottle in the actual use process. The invention also provides a preparation method of the IV-type hydrogen storage bottle sample bottle containing defects. The invention can provide a defect sample for the nondestructive testing/monitoring technology of the IV-type hydrogen storage bottle.
Description
Technical Field
The invention relates to a sample bottle of an IV-type hydrogen storage bottle, in particular to a sample bottle of an IV-type hydrogen storage bottle containing defects and a preparation method thereof.
Background
With the rapid development and industrialization of hydrogen fuel cells and electric automobiles, IV-type hydrogen storage cylinders are becoming a worldwide research hotspot due to the characteristics of light weight, fatigue resistance and the like. The IV-type hydrogen storage cylinder generally comprises a liner, a fiber-wound composite material reinforcing layer, a fiber-wound composite material protective layer and the like, and the IV-type hydrogen storage cylinder can generate damage (also called defects) such as broken wires, delamination, liner buckling, liner bubbling, liner cracks and the like in the use process. If these injuries are not discovered in a timely manner, they can lead to a misestimated disaster. At present, the nondestructive detection technology is generally adopted to detect the internal defects of the material, so the nondestructive detection technology is utilized to detect the internal defects of the IV-type hydrogen storage cylinder, and the method has very important significance for ensuring the use safety of the vehicle-mounted hydrogen storage cylinder.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a defective IV-type hydrogen storage bottle and a method for manufacturing the same, which can enable defect detection of the IV-type hydrogen storage bottle to be more accurate.
The technical scheme adopted by the invention is as follows:
the embodiment of the invention provides a defective IV type hydrogen storage bottle sample bottle, which comprises: the inner container is made of plastic materials, the winding layer is formed by carbon fibers and resin, the protective layer is formed by glass fibers and resin, wherein a defect is arranged on the inner container and/or the winding layer and used for simulating the defect of the IV-type hydrogen storage bottle in the actual use process.
Optionally, the inner container is provided with a defect, the defect on the inner container comprises a groove and/or a concave hole, the groove is used for simulating a crack defect of the inner container in the actual use process, and the concave hole is used for simulating a bubble defect of the inner container in the actual use process.
Optionally, in the case of having a weld on the inner container, the groove is formed in the weld and in a region a predetermined distance away from the weld, wherein the groove formed in the weld is formed along an extending direction of the weld, and the groove formed in the region a predetermined distance away from the weld includes a groove formed along a circumferential direction of the inner container, an axial direction, and an inclined direction inclined with respect to the extending direction of the weld.
Optionally, the preset distance is 5cm to 10cm.
Optionally, the winding layer is provided with a defect, the defect on the winding layer includes a cut formed on a carbon fiber and/or a layered piece arranged between two adjacent carbon fibers, the cut is used for simulating a yarn breaking defect of the winding layer in an actual use process, and the layered piece is used for simulating a layered defect of the winding layer in the actual use process.
Optionally, the winding layer is formed by winding in a preset plurality of different winding directions D = (D) 1 ，d 2 ，…，d n ) Winding the carbon fiber dipped with the resin and heating and curing to form n is more than or equal to 3;
whereinIn the direction of winding d i When a cut is formed in the carbon fiber obtained by winding, the cut is formed in the winding direction d i+1 The width of the wound carbon fibres being greater than the width of the cuts formed, d i I is the ith winding direction and has a value of 1 to n.
The embodiment of the invention also provides a preparation method of the sample bottle of the IV-type hydrogen storage bottle containing defects, which is used for preparing the sample bottle.
According to the defective IV-type hydrogen storage bottle sample bottle and the preparation method thereof provided by the embodiment of the invention, the defect simulating the actual occurrence of the IV-type hydrogen storage bottle is pre-embedded in the preparation process of the IV-type hydrogen storage bottle, so that a defect sample can be provided for the nondestructive detection/monitoring of the IV-type hydrogen storage bottle.
Drawings
FIG. 1 is a schematic illustration of a type IV hydrogen storage cylinder-like bottle having a defect on the inner liner provided by an embodiment of the present invention;
FIG. 2 is a diagram of relative location of defects on an inner bladder in accordance with an embodiment of the present invention.
FIG. 3 is a schematic illustration of a type IV hydrogen storage cylinder sample cylinder containing defects on the wrapping layer and protective layer as provided by an embodiment of the present invention;
FIG. 4 is a graph showing relative position distribution of defects on a wrapping layer and a protective layer according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 4, an embodiment of the present invention provides a defective type IV hydrogen storage bottle-like bottle, including: an inner container 1, a wrapping layer 2, and a protective layer (not shown). The inner container 1 is made of plastic material, the winding layer 2 is formed by carbon fiber and resin, and the protective layer can be formed by glass fiber and resin.
Wherein, the inner container 1 and/or the winding layer 2 are/is provided with defects which are used for simulating the defects of the IV-type hydrogen storage bottle in the actual use process, such as the delamination defects and the broken filament defects of the fiber layers which can occur between the fiber layers in the actual use process of the IV-type hydrogen storage bottle, and the crack defects and the foaming defects which can occur on the inner container.
In an embodiment of the present invention, a defect can be disposed on the inner container 1. The defects on the inner container can comprise grooves and/or concave holes. In the embodiment of the present invention, a defect may be provided on the inner surface or the outer surface of the inner container 1. The inner container in the embodiment of the invention can comprise an inner container main body and a bottle opening, and can be an inner container structure of the existing IV-type hydrogen storage bottle.
In the embodiment of the invention, the groove is used for simulating the crack defect of the inner container in the actual use process. In the case of a weld seam on the liner, a recess can be formed in the weld seam and in the region of a predetermined distance from the weld seam, wherein the recess formed in the weld seam is formed in the direction of extension of the weld seam, generally in the circumferential direction of the plastic liner. The groove formed in the region spaced apart from the weld by a predetermined distance may include a groove formed in a circumferential direction of the inner bladder, an axial direction, and an inclined direction inclined with respect to an extending direction of the weld. The preset distance can be 5 cm-10 cm. The included angle between the inclined direction and the extending direction (i.e. the central line) of the welding seam can be an included angle larger than 0, the specific numerical value of the included angle can be determined according to the actual situation, and the invention is not particularly limited. The grooves can be obtained by etching with a cutter, laser and the like, and the forming position, the number and the specific size (including the length, the width and the height) of the grooves can be set according to actual needs. Typically, the minimum width of the groove may be 0.2mm or a minimum width that can be machined, the maximum width not exceeding 0.5mm, in order to be able to simulate actual crack defects. That is, in the case where there is a weld in the inner bladder, the groove may be formed in four directions. If no weld seam is present in the inner container, the grooves can be provided only in the circumferential direction and in the axial direction of the inner container.
In the embodiment of the invention, the concave hole is used for simulating the foaming defect of the inner container in the actual use process. The concave hole can be obtained by milling or grinding. The shape, forming position, number and specific size (including diameter and hole depth) of the concave hole can be set according to actual requirements. In one example, the cross-section of the concave hole can be circular, so that the bubble defect of the inner container can be simulated more accurately. The depth of the concave hole is not more than the wall thickness of the plastic liner.
In an embodiment of the invention, the winding layer 2 may be provided with defects. Defects in the wound layer 2 may include cuts formed in the carbon fibers and/or delamination disposed between two adjacent carbon fibers.
In the embodiment of the present invention, the winding layer may be formed by winding D = (D) in a plurality of different preset winding directions 1 ，d 2 ，…，d n ) Winding the carbon fiber impregnated with the resin and heating and curing, wherein n is greater than or equal to 3. In a preferred embodiment, n =3, the winding direction may include two diagonal directions along the plastic liner along the circumferential direction of the plastic liner, but is not limited thereto, and other winding directions may be adopted. In an embodiment of the present invention, the heat curing may be performed after partially winding the carbon fiber impregnated with the resin, and in another embodiment, the heat curing may be performed after fully winding the carbon fiber impregnated with the resin.
The cutting is used for simulating the wire breaking defect of the winding layer (particularly carbon fiber) in the actual use process, and the cutting can be obtained by cutting the carbon fiber needing to be cut by tools such as a cutter and scissors. The cuts may be formed during the winding of the carbon fibers. In particular, in the winding direction d i Forming a cut C on the carbon fiber obtained by winding i According to the winding direction d i+1 Width W of the wound carbon fiber i+1 Greater than the formed nick C i Width W of i E.g. W i+1 ＝W i + w, w is 5-10cm i The value of i is 1 to n for the ith winding direction. The position and specific size (including length, width and height) of the cut can be determined according to actual conditions. Wherein the width of the cut is determined based on the width of the instrument used, preferably, the width of the cut should be [0.2mm,0.5mm ]]Meanwhile, the length of the cut depends on the number of the cut carbon fibers, for example, if 3 carbon fibers are cut, the length of the cut is equal to 3 × a, a being the width of each carbon fiber. The height of the cut depends on the number of layers of carbon fibers cut, e.g. if 4 layers of carbon fibers are cut, the length of the cut is equal to 4 xb, b being the thickness of each carbon fiber. In the embodiment of the invention, each bundle is woundThe carbon fibers are dip-coated with resin, and when a cut needs to be formed on the carbon fibers in a certain winding direction, the cut needs to be formed on the carbon fibers in the winding direction when a preset number of carbon fibers are wound in the next winding direction, so that the carbon fibers can be prevented from being cracked due to the cut, and the specified cut can be formed on the carbon fibers.
The layered parts are used for simulating the layered defects of the winding layers (particularly between carbon fibers) in the actual use process. The layered member may be bonded to the predetermined carbon fiber in a manner of bonding during the winding of the carbon fiber. The material of layering spare can select for use the material that can be discerned by laser, promptly with the material of carbon fiber and resin all different, as long as can be distinguished from carbon fiber and resin easily by any material of laser discernment all can, for example, can include hardboard, polytetrafluoroethylene, steel band, iron sheet etc.. The pasting position, size, number and the like of the layered pieces can be determined according to actual conditions.
In the embodiment of the present invention, the winding manner, the winding thickness, the addition amount of the resin, and the like of the carbon fiber may be determined according to actual needs, the present invention is not particularly limited, the present invention is intended to protect the type IV hydrogen storage bottle-like bottle having defects formed, the defects of the specific arrangement may be selectively arranged according to actual needs, and the present invention is not particularly limited. Hereinafter, the present invention is schematically illustrated by the first example and the second example for a type IV hydrogen storage bottle-like bottle containing defects.
[ first embodiment ] A method for manufacturing a semiconductor device
In this example, a type IV hydrogen storage bottle containing a defect was provided with cuts and delaminations on the wrapping and protective layers to simulate delamination and wire breakage defects, respectively, as shown in fig. 1. Wherein the relative positions of the nicks and the layered article are shown in figure 2. Wherein, the position and the size of the cut are shown in a table 1, the position and the size of the layered product are shown in a table 2, in the figure, reference numerals F1 to F18 represent the adding position of the layered product, reference numerals CZ1-CZ12 and CL1-CL12 represent the cut position, and reference numerals h1 and h2 represent the position of one half and one third of the whole thickness of the winding layer and the protective layer respectively. TABLE 1 location and size of delamination Defect
TABLE 2 location and size of filament breakage Defect
Note: marking a-120-degree positioning point at the defect position corresponding to the bottle mouth after finishing the shearing defect at the 1/2 winding layer.
[ second embodiment ]
In this example, a defective type IV hydrogen storage bottle sample bottle was provided with a groove and a recess hole in the liner having a weld for simulating a crack and a blister defect of the liner, respectively, as shown in fig. 3. The relative positions of the recesses and recesses are shown in figure 4. The positions and sizes of the grooves are shown in Table 3, and the positions and sizes of the concave holes are shown in Table 4. In fig. 3 and 4, reference numerals H1 to H5 denote groove positions formed in the weld, reference numerals H6 to H20 denote groove positions formed in regions other than the weld, and Q1 to Q9 denote recessed hole forming positions.
TABLE 3 liner weld defect position and size
TABLE 4 blister Defect location and size
Another embodiment of the present invention further provides a method for preparing a defective type IV hydrogen storage cylinder sample bottle, which is used for preparing the defective type IV hydrogen storage cylinder sample bottle. Specifically, the method for preparing a type IV hydrogen storage cylinder sample bottle containing defects provided by the embodiments of the present invention may include the following steps:
s100, preparing a plastic inner container;
and S110, respectively forming a plurality of grooves and/or concave holes on the plastic inner container, wherein the forming positions of the grooves and the concave holes are different.
In the embodiment of the invention, the groove is used for simulating the crack defect of the liner in the actual use process, and the groove and/or the concave hole can be arranged on the inner surface or the outer surface of the liner 1. In the case of a weld seam on the liner, a recess can be formed in the weld seam and in the region of a predetermined distance from the weld seam, wherein the recess formed in the weld seam is formed in the direction of extension of the weld seam, generally in the circumferential direction of the plastic liner. The groove formed in the region spaced apart from the weld by a predetermined distance may include a groove formed in a circumferential direction of the inner bladder, an axial direction, and an inclined direction inclined with respect to an extending direction of the weld. The preset distance can be 5 cm-10 cm. The included angle between the inclined direction and the extending direction of the welding seam can be an included angle larger than 0, the specific numerical value of the included angle can be determined according to the actual situation, and the invention is not particularly limited. The grooves can be obtained by etching with a cutter, laser and the like, and the forming position, the number and the specific size (including the length, the width and the height) of the grooves can be set according to actual needs. Typically, the minimum width of the groove may be 0.2mm or a minimum width that can be machined, the maximum width not exceeding 0.5mm, in order to be able to simulate actual crack defects. That is, in the case where there is a weld in the inner bladder, the groove may be formed in four directions. If no weld is present in the inner container, the grooves may be provided only in the circumferential and axial directions of the inner container.
In the embodiment of the invention, the concave hole is used for simulating the foaming defect of the inner container in the actual use process. The concave hole can be obtained by milling or grinding. The shape, forming position, number and specific size (including diameter and hole depth) of the concave hole can be set according to actual needs. In one example, the cross-section of the concave hole can be circular, so that the bubble defect of the inner container can be simulated more accurately. The depth of the concave hole is not more than the wall thickness of the plastic liner.
And S120, winding carbon fibers dipped and coated with resin on the plastic liner, heating and curing to form a winding layer, wherein a plurality of cuts and/or multi-component layer pieces are formed on the preset carbon fibers in the winding process, and the forming positions of the cuts are different from the adding positions of the layered pieces.
In the embodiment of the invention, the cutting is used for simulating the wire breaking defect of the winding layer (particularly carbon fiber) in the actual use process, and the cutting can be obtained by cutting the carbon fiber needing to be cut by tools such as a cutter and scissors. The position and specific size (including length, width and height) of the cut can be determined according to actual conditions. Wherein the width of the cut is determined based on the width of the tool used, preferably the width of the cut should be between [0.2mm,0.5mm ], and the length of the cut depends on the number of carbon fibers cut, e.g. if 3 carbon fibers are cut, the length of the cut equals 3 xa, a for the width of each carbon fiber. The height of the cut depends on the number of layers of carbon fibers cut, e.g. if 4 carbon fibers are cut, the length of the cut equals 4 × b, b being the thickness of each carbon fiber.
Further, in the embodiment of the present invention, the carbon fibers dip-coated with the resin may be sequentially wound in a preset plurality of different winding directions D = (D) in a preset winding order 1 ，d 2 ，…，d n ) And winding to wind the carbon fibers on the plastic liner layer by layer. In the embodiment of the invention, n is greater than or equal to 3. In a preferred embodiment, n =3, the winding direction may include two diagonal directions along the plastic liner along the circumferential direction of the plastic liner, but is not limited thereto, and other winding directions may be adopted. The specific winding mode can be carried out according to the defects arranged according to actual needs.
In an embodiment of the present invention, the heat curing may be performed after partially winding the carbon fiber impregnated with the resin, and in another embodiment, the heat curing may be performed after fully winding the carbon fiber impregnated with the resin. Wherein, in the embodiment of the invention, the winding direction d is i Forming a cut C in the carbon fiber obtained by winding i According to the winding direction d i+1 Width W of the wound carbon fiber i+1 Greater than the formed nick C i Width W of i E.g. W i+1 ＝W i + w, w is 5-10cm i I is the ith winding direction and has a value of 1 to n. The inventionIn the embodiment, each bundle of wound carbon fibers is coated with resin in a dip mode, and when a cut needs to be formed on a carbon fiber in a certain winding direction, a preset number of carbon fibers need to be wound in the next winding direction, and then the cut is formed on the carbon fiber in the winding direction, so that the carbon fiber can be prevented from being cracked when the cut is formed, and the specified cut can be formed on the carbon fiber.
In an embodiment of the invention, the layered parts are used for simulating the layered defects of the winding layers (particularly between carbon fibers) in the actual use process. The layered member may be bonded to the predetermined carbon fiber by means of bonding. The material of layering spare can be chooseed for use and can be discerned by the laser the material, promptly with the carbon fiber and the material of resin all different, as long as can be distinguished from carbon fiber and resin easily by any material of laser discernment all can, for example, can include cardboard, polytetrafluoroethylene, steel band, iron sheet etc.. The pasting position, size, number and the like of the layered pieces can be determined according to the actual situation.
And S130, forming a protective layer on the winding layer.
In the embodiment of the present invention, the protective layer may be obtained by winding glass fibers and adding a resin on the winding layer, and specifically may be obtained by winding glass fibers and casting a resin and heating to cure. The method for forming the protective layer may be an existing method.
In the embodiment of the present invention, the steps S100 to S130 can be selectively performed according to actual requirements. For example, the steps can be performed on the same bottle body in sequence, and a sample bottle with the layering defect, the broken filament defect, the crack defect and the foaming defect can be formed simultaneously. Alternatively, the steps S100 to S110 may be performed on one body and the steps S120 to S130 may be performed on another body, so that a sample bottle having only a crack defect and a bubble defect, or a sample bottle having only a delamination defect and a thread breakage defect may be formed. Of course, sample bottles with other types of defects can be produced according to actual needs, and all of them are included in the protection scope of the present invention.
The IV type hydrogen storage bottle sample bottle containing the defects provided by the embodiment can provide defect samples for nondestructive testing/monitoring technology of the IV type hydrogen storage bottle in practical application. Specifically, when the nondestructive testing is performed on the IV-type hydrogen storage bottle, the nondestructive testing equipment can be used for detecting the defects arranged in the sample bottle to obtain the testing data, and then the testing data is compared with the preset defect data in the sample bottle to verify whether the used testing means is correct or not, so that the testing result can be ensured to be accurate.
The above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. A defective type IV hydrogen storage cylinder-like bottle comprising: the novel IV-type hydrogen storage bottle comprises an inner container, a winding layer and a protective layer, wherein the inner container is made of a plastic material, the winding layer is formed by carbon fibers and resin, the protective layer is formed by glass fibers and resin, and defects are arranged on the outer surface of the inner container and the winding layer and used for simulating defects generated in the actual use process of the IV-type hydrogen storage bottle;
the defects on the liner comprise grooves and/or concave holes, the grooves are used for simulating crack defects of the liner in the actual use process, and the concave holes are used for simulating bubble defects of the liner in the actual use process;
in the case of having a weld on the inner bladder, the groove is formed in the weld and in a region a predetermined distance from the weld, wherein the groove formed in the weld is formed in an extending direction of the weld, and the groove formed in the region a predetermined distance from the weld includes a groove formed in a circumferential direction of the inner bladder, an axial direction, and an inclined direction inclined with respect to the extending direction of the weld;
the defects on the winding layer comprise cuts formed on the carbon fibers, and the cuts are used for simulating the wire breaking defects of the winding layer in the actual use process;
the winding layers are wound in a plurality of preset different winding directions D = (D) 1 ，d 2 ，…，d n ) Winding the carbon fiber dipped with the resin and heating and curing to form n is more than or equal to 3;
wherein in the winding direction d i When a cut is formed in the carbon fiber obtained by winding, the cut is formed in the winding direction d i+1 The width of the wound carbon fibres being greater than the width of the cuts formed, d i The value of i is 1 to n in the ith winding direction;
the preset distance is 5 cm-10 cm.
2. The defective-containing type IV hydrogen storage bottle-like bottle according to claim 1, wherein the defect on the winding layer further comprises forming a delamination member disposed between two adjacent carbon fibers, the delamination member simulating a delamination defect of the winding layer occurring during actual use.
3. A method for producing a type IV hydrogen storage bottle-like bottle containing a defect, characterized by being used for producing the type IV hydrogen storage bottle-like bottle containing a defect according to any one of claims 1 to 2.
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