CN111947018B - Winding forming method of composite material gas cylinder with internal grid ribs - Google Patents

Winding forming method of composite material gas cylinder with internal grid ribs Download PDF

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Publication number
CN111947018B
CN111947018B CN202010793950.XA CN202010793950A CN111947018B CN 111947018 B CN111947018 B CN 111947018B CN 202010793950 A CN202010793950 A CN 202010793950A CN 111947018 B CN111947018 B CN 111947018B
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China
Prior art keywords
winding
grid
gas cylinder
grid section
side end
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CN202010793950.XA
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Chinese (zh)
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CN111947018A (en
Inventor
崔磊
朱江
麻永帅
高岩
刘千
季宝锋
刘含洋
丁常方
张鹏
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Sichuan Aerospace Fenghuo Servo Control Technology Co ltd
Tianjin Aisida New Material Technology Co ltd
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Sichuan Aerospace Fenghuo Servo Control Technology Co ltd
Tianjin Aisida New Material Technology Co ltd
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Priority to CN202010793950.XA priority Critical patent/CN111947018B/en
Publication of CN111947018A publication Critical patent/CN111947018A/en
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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
    • F17C1/08—Integral reinforcements, e.g. ribs
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/76—Cores
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • 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
    • 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
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/545—Perforating, cutting or machining during or after moulding
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles
    • 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
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0114—Shape cylindrical with interiorly 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
    • 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
    • F17C2203/0626—Multiple walls
    • F17C2203/0629—Two walls
    • 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
    • F17C2209/2154—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
    • F17C2209/22—Assembling processes
    • F17C2209/227—Assembling processes by adhesive means

Abstract

The invention discloses a winding forming method of a composite material gas cylinder with internal grid ribs, and belongs to the technical field of gas cylinder structures. The composite material gas cylinder with the internal grid ribs comprises a gas cylinder outer layer and a grid inner layer; the outer layer of the gas cylinder and the inner layer of the grid are both made of composite materials; the inner layer of the grid is in a bottle liner shape, and the inner layer of the grid is in a grid rib structure; the outer layer of the gas cylinder is wound and connected with the outer part of the inner layer of the grid. The gas cylinder solves the problems that in the prior art, the gas cylinder adopts a plastic inner container, so that the whole structure is relatively thin and the axial compression resistance is weak; the gas cylinder adopts the metal inner bag, leads to whole weight heavy, can't satisfy the technical problem of user demand. According to the invention, the grid inner layer is arranged in the outer layer of the gas cylinder, and is of an intensive inner grid rib structure, so that the axial compression resistance of the whole gas cylinder is improved, and the gas cylinder is made of a composite material, so that the light weight of the gas cylinder is realized.

Description

Winding forming method of composite material gas cylinder with internal grid ribs
Technical Field
The invention relates to the technical field of gas cylinder structures, in particular to a composite material gas cylinder with internal grid ribs and a winding forming method thereof.
Background
The composite gas cylinder has light weight and high pressure resistance, so the composite gas cylinder has wide application foundation in the fields of aerospace and civil use. In the prior art, the composite gas cylinder is of a structure with an inner container and an outer layer made of composite materials, so that the overall pressure resistance of the gas cylinder is improved.
The inner container of the composite material gas cylinder is usually made of two materials, namely a metal inner container and a plastic inner container, so that the integral bearing internal pressure of the composite material gas cylinder can reach 100MPa, and the use requirement is met.
However, when the gas cylinder in the prior art adopts a plastic inner container, the plastic inner container and the composite material outer layer both adopt thin-wall structures, so that the whole structure of the gas cylinder is thinner, and the axial compression resistance of the gas cylinder is weaker.
When the gas cylinder adopts the metal inner container, the total weight of the whole gas cylinder can be greatly increased due to the heavy weight of the metal inner container, so that the use requirement can not be met.
Disclosure of Invention
The invention aims to provide a composite material gas cylinder with internal grid ribs, which aims to solve the problems that in the prior art, the gas cylinder adopts a plastic inner container, so that the integral structure is thinner and the axial pressure resistance is weak; the gas cylinder adopts the metal inner bag, leads to whole weight heavy, can't satisfy the technical problem of user demand.
The invention provides a composite material gas cylinder with internal grid ribs, which comprises a gas cylinder outer layer and a grid inner layer;
the outer layer of the gas cylinder and the inner layer of the grid are both made of composite materials;
the inner layer of the grid is in a bottle liner shape, and the inner layer of the grid is in a grid rib structure;
the outer layer of the gas cylinder is wound and connected with the outer part of the inner layer of the grid.
Further, the grid inner layer comprises a first grid section and a second grid section;
the inner side end of the first grid section is fixedly bonded with the inner side end of the second grid section;
the first grid section has the same structure as the second grid section.
Furthermore, a first connecting end is arranged at the inner side end of the first grid section, and a second connecting end is arranged at the inner side end of the second grid section;
the first connecting end is connected with the second connecting end to realize the connection of the first grid section and the second grid section.
Further, the first connecting end is an annular groove formed at the inner side end of the first grid section;
the second connection end is an annular boss formed at an inner side end of the second mesh section.
Furthermore, a first connecting hole is formed in the outer side end of the first grid section and connected with the first flange;
and the outer side end of the second grid section is provided with a second connecting hole, and the second connecting hole is connected with a second flange.
Furthermore, the grids in the grid inner layer are rhombic grids.
The invention also provides a winding forming method of the composite material gas cylinder with the internal grid ribs, which comprises the following steps:
(a) assembly core mould
Two core molds are prepared, namely: a first core mold and a second core mold, which are assembled;
(b) installation rubber mold
Respectively installing rubber molds on the outer surface of the first core mold and the outer surface of the second core mold;
(c) first winding
Respectively installing a first core mould and a rubber mould thereof, a second core mould and a rubber mould thereof on a winding machine, and winding fibers in the grooves of the two rubber moulds in sequence by using a wet winding mode until the grooves are completely filled;
when wet winding is carried out, 2 strands of yarns are adopted for winding, the winding tension is 80N, the winding angle is 16.4 degrees, and the number of winding layers is 20;
(d) second winding
The wet-process fiber winding is respectively carried out on the surfaces of the two rubber molds, 2 layers of spiral winding and 2 layers of annular winding are adopted during winding, 2 strands of yarns are adopted for winding, the tension is 75N, and the winding angle is 16.4 degrees;
then, winding 2 layers along the ring direction of the two rubber molds, and winding by adopting 4 strands of yarns with the tension of 75N;
(e) curing
Putting the wound rubber mold into a hot-pressing tank for rotary heating and curing, wherein the curing temperature is 80 ℃, and the curing time is 8 hours;
(f) demoulding and forming
Cutting the cured product from the middle part, and demolding the formed grid layer from the rubber mold to form a first grid section and a second grid section;
(g) grid section processing
Respectively processing the inner side end of the first grid section and the inner side end of the second grid section, processing a first connecting end at the inner side end of the first grid section by using mechanical equipment, and processing a second connecting end at the inner side end of the second grid section;
(h) forming of inner layer of grid
Respectively coating adhesive on the first connecting end and the second connecting end, and bonding the inner side end of the first grid section and the inner side end of the second grid section into a whole to form a grid inner layer with complex inner grid ribs;
(i) mounting flange
The first connecting holes at the outer side end of the first grid section are bonded with the first flange by glue, and the second connecting holes at the outer side end of the second grid section are bonded with the second flange by glue;
(j) outer layer forming of gas cylinder
Install the net inlayer on the coiler, at the surface of net inlayer, carry out spiral winding, hoop winding in proper order through wet process fibre in turn, spiral winding and hoop winding twine 8 layers respectively, form the gas cylinder skin, whole product can the shaping.
Compared with the prior art, the composite material gas cylinder with the internal grid ribs has the following advantages:
the outer layer and the inner layer of the gas cylinder are both made of composite materials, so that the weight of the whole gas cylinder is light; the grid inner layer forms a bottle liner shape so as to be adapted to the structure of the outer layer of the gas bottle; the grid inner layer is of a grid rib structure so as to improve the supporting force of the grid inner layer and improve the axial pressure of the outer layer of the gas cylinder. The outer layer of the gas cylinder is wound and connected outside the grid inner layer to manufacture the composite material gas cylinder with the complex inner grid ribs, and the grid reinforcing ribs on the grid inner layer are utilized to support the outer layer of the gas cylinder, so that the axial compression resistance of the gas cylinder is improved, and the use requirement is met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is an external schematic view of a composite gas cylinder with internal grid ribs provided by an embodiment of the invention;
FIG. 2 is a partially cut-away schematic view of a composite cylinder with internal grid ribs provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of a disassembled state of the composite material gas cylinder with the internal grid ribs according to the embodiment of the invention;
FIG. 4 is an internal schematic view of a first grid segment according to an embodiment of the present invention;
FIG. 5 is an internal schematic view of a second grid section provided in accordance with an embodiment of the present invention;
fig. 6 is a flowchart of a winding method for forming a composite gas cylinder with internal grid ribs according to an embodiment of the present invention.
Description of reference numerals:
100-outer layer of gas cylinder; 200-mesh inner layer;
201-a first grid segment; 202-a second grid segment;
203-a first connection hole; 204-a first flange;
205-second connection hole; 206-second flange.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 5, the composite gas cylinder with internal grid ribs provided by the invention comprises a gas cylinder outer layer 100 and a grid inner layer 200;
the outer layer 100 of the gas cylinder and the inner layer 200 of the grid are both made of composite materials;
the grid inner layer 200 is in a bottle liner shape, and the grid inner layer 200 is in a grid rib structure;
the outer cylinder layer 100 is wound on the outside of the inner mesh layer 200.
In the above embodiments of the present application, as shown in fig. 1 and fig. 2, the gas cylinder outer layer 100 and the mesh inner layer 200 are both made of a composite material, the composite material is composed of a resin system and a fiber material, the resin matrix is one or more of 50% to 60% of epoxy resin, 35% to 45% of a curing agent, and 0.5% to 3% of an auxiliary agent, and the fiber material is one or more of glass fiber, carbon fiber, and aramid fiber. The whole gas cylinder is made of composite materials, so that the gas cylinder is light in weight.
The grid inner layer 200 is an intensive inner grid rib, so that the gas cylinder can effectively bear the load, can bear larger axial pressure, and can meet the higher use environment requirement when meeting the requirement of partial axial compression resistance.
The outer layer 100 of the gas cylinder is formed by winding continuous fibers, and when the gas cylinder bears internal pressure, the gas cylinder can bear force uniformly through an outer layer composite material, so that the basic internal pressure bearing requirement of the gas cylinder is met.
Further, the mesh inner layer 200 includes a first mesh segment 201 and a second mesh segment 202;
the inner end of the first grid section 201 is fixedly bonded with the inner end of the second grid section 202;
the structure of the first grid section 201 is the same as the structure of the second grid section 202.
In one embodiment of the present invention, as shown in fig. 3, 4 and 5, the grid inner layer 200 is directly bonded and fixed by two grid segments with the same structure, the connection position is firm, and the grid inner layer is bonded and fixed by glue, so that the weight is further reduced.
Further, a first connecting end is arranged at the inner side end of the first grid section 201, and a second connecting end is arranged at the inner side end of the second grid section 202;
the first connection end is connected to the second connection end, so that the first grid section 201 is connected to the second grid section 202.
In the embodiment of the present invention, the first connection end is disposed at the inner end of the first grid section 201, the second connection end is disposed at the inner end of the second grid section 202, and the two connection ends are used to realize connection and fixation between the two grid sections, so as to ensure that the connection positions of the two grid sections are firm.
Further, the first connection end is an annular groove formed at an inner side end of the first mesh section 201;
the second connection end is an annular boss formed at the inner side end of the second mesh section 202.
In the embodiment of the invention, the annular groove is arranged at the inner side end of the first grid section 201, the annular boss is arranged at the inner side end of the second grid section 202, and after the annular boss and the annular groove are clamped, the annular boss and the annular boss are fixedly bonded by glue, so that no gap is left at the connecting position of the two grid sections, and the stability of the connecting position is ensured.
In other embodiments, the first connection end may also be an arc-shaped groove formed at the inner side end of the first grid section 201, and the second connection end is an arc-shaped protrusion formed at the inner side end of the second grid section 202, so that the arc-shaped structure is utilized, the material is saved, and the connection position can be connected firmly.
Further, the outer end of the first grid section 201 is provided with a first connection hole 203, and the first connection hole 203 is connected with the first flange 204;
the outer end of the second grid section 202 is provided with a second connection hole 205, and the second connection hole 205 is connected with a second flange 206.
In this embodiment, two flanges are the metal material, and other structures are combined material, not only can ensure the light in weight of gas cylinder, can also guarantee the gas tightness of gas cylinder.
Further, the grid of the grid inner layer 200 is a diamond grid.
In this embodiment, the grid ribs of the grid inner layer 200 form a diamond-shaped structure, and the diamond shape can improve the axial pressure resistance of the gas cylinder to the maximum extent.
As shown in fig. 6, the invention also provides a winding forming method of the composite material gas cylinder with the internal grid ribs, which comprises the following steps:
(a) assembly core mould
Two core molds are prepared, namely: a first core mold and a second core mold, which are assembled;
(b) installation rubber mold
Respectively installing rubber molds on the outer surface of the first core mold and the outer surface of the second core mold;
(c) first winding
Respectively installing a first core mould and a rubber mould thereof, a second core mould and a rubber mould thereof on a winding machine, and winding fibers in the grooves of the two rubber moulds in sequence by using a wet winding mode until the grooves are completely filled;
when wet winding is carried out, 2 strands of yarns are adopted for winding, the winding tension is 80N, the winding angle is 16.4 degrees, and the number of winding layers is 20;
(d) second winding
The wet-process fiber winding is respectively carried out on the surfaces of the two rubber molds, 2 layers of spiral winding and 2 layers of annular winding are adopted during winding, 2 strands of yarns are adopted for winding, the tension is 75N, and the winding angle is 16.4 degrees;
then, winding 2 layers along the ring direction of the two rubber molds, and winding by adopting 4 strands of yarns with the tension of 75N;
(e) curing
Putting the wound rubber mold into a hot-pressing tank for rotary heating and curing, wherein the curing temperature is 80 ℃, and the curing time is 8 hours;
(f) demoulding and forming
Cutting the cured product from the middle part, and demolding the formed grid layer from the rubber mold to form a first grid section 201 and a second grid section 202;
(g) grid section processing
Respectively processing the inner side end of the first grid section 201 and the inner side end of the second grid section 202, processing a first connecting end at the inner side end of the first grid section 201 by using mechanical equipment, and processing a second connecting end at the inner side end of the second grid section 202;
(h) forming of inner layer of grid
Respectively coating adhesive on the first connecting end and the second connecting end, and bonding the inner side end of the first grid section 201 and the inner side end of the second grid section 202 into a whole to form a grid inner layer 200 with complex inner grid ribs;
(i) mounting flange
A first connecting hole 203 at the outer end of the first grid section 201 is bonded with a first flange 204 by glue, and a second connecting hole 205 at the outer end of the second grid section 202 is bonded with a second flange 206 by glue;
(j) outer layer forming of gas cylinder
Install net inlayer 200 on the coiler, at net inlayer 200's surface, carry out spiral winding, hoop winding in proper order through wet process fibre in turn, spiral winding and hoop winding twine 8 layers respectively, form gas cylinder skin 100, whole product can the shaping.
According to the forming method, the complex grid ribs and the skin are formed on the silicon rubber mold, after solidification, the product is cut off, the core mold and the silicon rubber are taken out, two pieces of grid sections are bonded and fixed through the adhesive, the grid inner layer 200 of the gas cylinder is formed, the outer layer is wound on the grid inner layer 200 of the gas cylinder, the gas cylinder outer layer 100 is formed, and finally the composite material gas cylinder structure with the complex inner grid ribs is formed.
This gas cylinder is because inside is equipped with intensive interior net muscle, when bearing axial pressure, can effectually bear great axial pressure, satisfies the higher service environment of part axial resistance to compression requirement. The composite material of the outer layer of the gas cylinder is formed by winding continuous fibers, and when the gas cylinder bears internal pressure, the composite material of the outer layer can bear force, so that the basic internal pressure bearing requirement of the gas cylinder is met; the gas cylinder is formed by adopting carbon fiber composite materials except for flanges at two ends, the density of the gas cylinder material is low, and the whole weight is small.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (1)

1. A winding forming method of a composite material gas cylinder with internal grid ribs is characterized by comprising the following steps:
(a) assembly core mould
Two core molds are prepared, namely: a first core mold and a second core mold, which are assembled;
(b) installation rubber mold
Respectively installing rubber molds on the outer surface of the first core mold and the outer surface of the second core mold;
(c) first winding
Respectively installing a first core mould and a rubber mould thereof, a second core mould and a rubber mould thereof on a winding machine, and winding fibers in the grooves of the two rubber moulds in sequence by using a wet winding mode until the grooves are completely filled;
when wet winding is carried out, 2 strands of yarns are adopted for winding, the winding tension is 80N, the winding angle is 16.4 degrees, and the number of winding layers is 20;
(d) second winding
The wet-process fiber winding is respectively carried out on the surfaces of the two rubber molds, 2 layers of spiral winding and 2 layers of annular winding are adopted during winding, 2 strands of yarns are adopted for winding, the tension is 75N, and the winding angle is 16.4 degrees;
then, winding 2 layers along the ring direction of the two rubber molds, and winding by adopting 4 strands of yarns with the tension of 75N;
(e) curing
Putting the wound rubber mold into a hot-pressing tank for rotary heating and curing, wherein the curing temperature is 80 ℃, and the curing time is 8 hours;
(f) demoulding and forming
Cutting the cured product from the middle part, and demolding the formed grid layer from the rubber mold to form a first grid section (201) and a second grid section (202);
(g) grid section processing
Respectively processing the inner side end of the first grid section (201) and the inner side end of the second grid section (202), processing a first connecting end at the inner side end of the first grid section (201) by using mechanical equipment, and processing a second connecting end at the inner side end of the second grid section (202);
(h) forming of inner layer of grid
Respectively coating adhesive on the first connecting end and the second connecting end, and bonding the inner side end of the first grid section (201) and the inner side end of the second grid section (202) into a whole to form a grid inner layer (200) with complex inner grid ribs;
(i) mounting flange
A first connecting hole (203) at the outer side end of the first grid section (201) is glued with a first flange (204), and a second connecting hole (205) at the outer side end of the second grid section (202) is glued with a second flange (206);
(j) outer layer forming of gas cylinder
Install net inlayer (200) on the coiler, at the surface of net inlayer (200), carry out spiral winding, hoop winding in proper order through wet process fibre in turn, spiral winding and hoop winding twine 8 layers respectively, form outer (100) of gas cylinder, whole product can the shaping.
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