CN214535657U - Plastic inner container composite material high-pressure hydrogen storage bottle - Google Patents
Plastic inner container composite material high-pressure hydrogen storage bottle Download PDFInfo
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- CN214535657U CN214535657U CN202120636602.1U CN202120636602U CN214535657U CN 214535657 U CN214535657 U CN 214535657U CN 202120636602 U CN202120636602 U CN 202120636602U CN 214535657 U CN214535657 U CN 214535657U
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Abstract
The utility model discloses a plastics inner bag combined material high pressure hydrogen storage bottle, including bottle and metal bottleneck subassembly, the bottle includes by interior plastics inner bag, winding layer and the outer protective layer that connects gradually outside to, and the plastics inner bag includes by interior plastics inner bag inlayer, plastics inner bag isolation layer and the plastics inner bag skin that bonds in proper order outside to, and the metal bottleneck subassembly is including inlaying base and disk seat, inlays that the base fuses with the plastics inner bag and bonds as an organic wholely. The utility model is provided with the plastic inner container which adopts the multilayer structure design, thereby effectively improving the hydrogen permeability resistance of the inner container; the surface treatment of the embedded base enhances the bonding capability with the polymer and can reduce the hidden trouble of leakage; the sealing capability and the pressure resistance capability of the hydrogen cylinder are greatly enhanced by using the spring energy storage sealing ring; in addition, on the premise of ensuring high performance, the winding scheme is optimized, and carbon fibers with lower cost are adopted, so that the manufacturing cost is reduced.
Description
Technical Field
The utility model relates to a carbon fiber full winding combined material high pressure hydrogen storage cylinder especially relates to a plastics inner bag combined material high pressure hydrogen storage cylinder for saving 70Mpa high pressure gaseous state hydrogen.
Background
Hydrogen energy is a high-efficiency clean energy, has the advantages of rich sources, cleanness, environmental protection, storage and transportation and the like, is known as the secondary energy with the most development potential in the century, and particularly in the field of automobiles, the hydrogen energy and the electric energy are regarded as the best choices of future alternative energy.
The vehicle-mounted hydrogen storage technology is the key for the development of hydrogen fuel cell automobiles, and directly influences the endurance mileage, the cost and the like of the hydrogen fuel cell automobiles. The gaseous hydrogen storage technology is mature, has wide application and low cost, and is the main mode of the current hydrogen storage application. The hydrogen storage bottle is the core of the hydrogen storage system, the cost accounts for about 1/3 of the cost of the hydrogen storage system, and the hydrogen storage bottle for the vehicle is developed towards the high pressure, light weight, low cost and stable quality.
At present, the non-metal liner fiber fully-wound high-pressure hydrogen storage cylinder developed by many foreign well-known enterprises has the design working pressure of 70MPa, and has the characteristics of long fatigue life, corrosion resistance, small weight-to-volume ratio and the like; however, the plastic non-metal liner has the problems of poor permeability resistance, unstable quality, potential leakage hidden trouble possibly existing in the welding process with the metal valve seat and the like, and in addition, the process is relatively complex and the manufacturing cost is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model designs a plastic liner composite material high-pressure hydrogen storage bottle.
The utility model adopts the following technical scheme:
the utility model provides a plastics inner bag combined material high pressure hydrogen storage bottle, including bottle and metal bottleneck subassembly, the bottle includes the plastics inner bag that connects gradually by inside to outside, winding layer and outer protective layer, the plastics inner bag includes the plastics inner bag inlayer that bonds in proper order by inside to outside, plastics inner bag barrier layer and plastics inner bag are outer, metal bottleneck subassembly is including inlaying base and disk seat, it fuses the bonding as an organic wholely with the plastics inner bag to inlay the base, it is provided with the central connecting hole to inlay the base center, inlay the central connecting hole of base and pass through screw thread and disk seat threaded connection, disk seat outside bottom extrusion and the inboard plastics inner bag part of fusing the bonding of inlaying the base form sealedly.
Preferably, the inner layer of the plastic liner and the outer layer of the plastic liner are preferably HDPE layers or PA layers. So as to improve the toughness, high and low temperature aging resistance, low temperature impact resistance, hydrogen charging and discharging fatigue performance and the compatibility with the barrier layer of the material.
Preferably, the barrier layer of the plastic liner is an EVOH layer. The EVOH layer has better gas barrier property so as to improve the hydrogen permeation resistance of the gas cylinder liner. The plastic inner container is manufactured by adopting a rotational molding process.
Preferably, the bottom of the inlaid base is provided with a spherical surface which is contacted with the plastic liner to be fused and bonded into a whole.
Preferably, the bottom in the central connecting hole of the embedding base is provided with an annular groove with a tooth-shaped section, and the embedding base is contacted with the plastic liner through the annular groove at the bottom in the central connecting hole to be fused and bonded into a whole.
Preferably, a conical internal thread is arranged in a central connecting hole of the embedding base, a conical external thread is correspondingly arranged on the upper portion of the valve seat, the embedding base is in threaded connection with the valve seat, the embedding base is preferably an aluminum alloy base, and the surface of the embedding base is subjected to silanization pretreatment. The conical internal thread connection ensures sealing and connection. The aluminum alloy base can be selected from 7075-T6 or 6061-T6. The silanization pretreatment is carried out to improve the bonding strength of the metal and polymer interface, and the resin and the plastic liner are bonded into a whole through the rotational molding process, so that the resin and the surface of the metal bottle mouth component form reliable bonding.
Preferably, the valve seat is of a sleeve structure, a plurality of sealing grooves are formed in the lower portion of the outer side of the valve seat, spring energy storage sealing rings are respectively installed in the plurality of sealing grooves, the spring energy storage sealing rings are extruded with the plastic inner container to form sealing, and a threaded connection interface or a quick insertion interface is arranged at the top of the valve seat. The valve seat material is preferably stainless steel.
Preferably, the winding layer is a carbon fiber winding layer and is formed by alternately winding a plurality of layers of carbon fibers outside the plastic inner container in a longitudinal spiral winding mode and a circumferential winding mode, and an adhesive layer is connected between the winding layer and the plastic inner container. The winding scheme is obtained by simulation optimization design, the adhesive exists between the winding layer and the plastic liner, and a cross-linked network structure is formed at the interface of the winding layer composite material and the adhesive through co-curing, so that the winding layer and the liner are efficiently bonded. The T700-grade carbon fiber of the large tow 24K is preferably selected as the material of the winding layer, so that the cost is lower, the efficiency is higher, and the cost can be reduced.
Preferably, the outer protective layer is a glass fiber reinforced resin layer and is formed by alternately winding a plurality of layers of glass fibers outside the winding layer in a longitudinal spiral winding mode and a circumferential winding mode. And curing the embedded base and the winding layer together into a whole through a winding process.
The utility model has the advantages that: the utility model is provided with the plastic inner container which adopts the multilayer structure design, thereby effectively improving the hydrogen permeability resistance of the inner container; the surface treatment of the embedded base enhances the bonding capability with the polymer and can reduce the hidden trouble of leakage; the sealing capability and the pressure resistance capability of the hydrogen cylinder are greatly enhanced by using the spring energy storage sealing ring; in addition, on the premise of ensuring high performance, the winding scheme is optimized, and carbon fibers with lower cost are adopted, so that the manufacturing cost is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the cross section of the plastic liner of the present invention;
FIG. 3 is a schematic view of a metal bottle mouth assembly according to the present invention;
FIG. 4 is a schematic structural view of the bonding between the plastic liner and the winding layer of the present invention;
in the figure: 1. a plastic inner container; 1-1, inner layer of plastic inner container; 1-2, a plastic liner barrier layer; 1-3, an outer layer of the plastic inner container; 1-4, embedding a base; 1-5, valve seat; 2. a winding layer; 3. an outer protective layer; 4. a spring energy storage sealing ring; 5. an adhesive layer.
Detailed Description
The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:
example (b): as shown in attached figures 1-4, the plastic liner composite high-pressure hydrogen storage bottle comprises a bottle body and a metal bottle mouth assembly, wherein the bottle body comprises a plastic liner 1, a winding layer 2 and an outer protection layer 3 which are sequentially connected from inside to outside, the plastic liner comprises a plastic liner inner layer 1-1, a plastic liner blocking layer 1-2 and a plastic liner outer layer 1-3 which are sequentially bonded from inside to outside, the metal bottle mouth assembly comprises an embedded base 1-4 and a valve seat 1-5, the embedded base and the plastic liner are fused and bonded into a whole, a central connecting hole is formed in the center of the embedded base, the central connecting hole of the embedded base is in threaded connection with the valve seat through threads, and the bottom of the outer side of the valve seat extrudes the plastic liner part fused and bonded with the inner side of the embedded base to form sealing.
The inner layer of the plastic liner and the outer layer of the plastic liner are preferably HDPE layers. So as to improve the toughness, high and low temperature aging resistance, low temperature impact resistance, hydrogen charging and discharging fatigue performance and the compatibility with the barrier layer of the material.
The barrier layer of the plastic liner is preferably an EVOH layer. The EVOH layer has better gas barrier property so as to improve the hydrogen permeation resistance of the gas cylinder liner. The plastic inner container is manufactured by adopting a rotational molding process.
The bottom of the embedded base is provided with a spherical surface which is contacted with the plastic liner to be fused and bonded into a whole.
The bottom in the central connecting hole of the embedded base is provided with an annular groove with a tooth-shaped section, and the embedded base is contacted with the plastic liner through the annular groove at the bottom in the central connecting hole to be fused and bonded into a whole.
The base is embedded, the base is preferably an aluminum alloy base, and the surface of the embedded base is subjected to silanization pretreatment. The conical internal thread connection ensures sealing and connection. The aluminum alloy base can be selected from 7075-T6. The silanization pretreatment is carried out to improve the bonding strength of the metal and polymer interface, and the resin and the plastic liner are bonded into a whole through the rotational molding process, so that the resin and the surface of the metal bottle mouth component form reliable bonding.
The valve seat is of a sleeve structure, two sealing grooves are formed in the lower portion of the outer side of the valve seat, spring energy storage sealing rings 4 are respectively installed in the two sealing grooves, the spring energy storage sealing rings and the plastic inner container are extruded to form sealing, and a threaded connection interface or a quick insertion interface is arranged at the top of the valve seat. The valve seat material is preferably stainless steel.
The winding layer is a carbon fiber winding layer and is formed by alternately winding a plurality of layers of carbon fibers outside the plastic inner container in a longitudinal spiral winding mode and a circumferential winding mode, and an adhesive layer 5 is connected between the winding layer and the plastic inner container. The winding scheme is obtained by simulation optimization design, the adhesive exists between the winding layer and the plastic liner, and a cross-linked network structure is formed at the interface of the winding layer composite material and the adhesive through co-curing, so that the winding layer and the liner are efficiently bonded. The T700-grade carbon fiber of the large tow 24K is preferably selected as the material of the winding layer, so that the cost is lower, the efficiency is higher, and the cost can be reduced.
The outer protective layer is a glass fiber reinforced resin layer and is formed by alternately winding a plurality of layers of glass fibers outside the winding layer in a longitudinal spiral winding mode and a circumferential winding mode. And curing the embedded base and the winding layer together into a whole through a winding process.
The manufacturing method of the plastic liner composite material high-pressure hydrogen storage bottle comprises the following steps:
firstly, respectively welding the embedded base and two ends of a blank body of the plastic inner container together;
secondly, forming the plastic liner layer by layer from the blank of the plastic liner through a rotational molding process;
coating a binder layer outside the plastic liner, alternately winding a plurality of layers of carbon fibers outside the plastic liner in a longitudinal spiral winding mode and a circumferential winding mode to form winding layers, and alternately winding a plurality of layers of glass fibers outside the winding layers in a longitudinal spiral winding mode and a circumferential winding mode to form an outer protective layer;
and fourthly, the valve seat is screwed up through the conical external thread and the internal thread of the embedded base, and after the valve seat is screwed up, the spring energy storage sealing rings in the plurality of sealing grooves at the lower part of the outer side of the valve seat are extruded with the plastic liner to form sealing, so that the whole plastic liner composite material high-pressure hydrogen storage bottle is manufactured.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (9)
1. The utility model provides a plastics inner bag combined material high pressure hydrogen storage bottle, includes bottle and metal bottleneck subassembly, and the bottle includes by interior plastics inner bag, winding layer and the outer protective layer that connects gradually outside to, characterized by, the plastics inner bag includes by interior plastics inner bag inlayer, plastics inner bag barrier layer and the plastics inner bag skin that bonds in proper order outside to, and metal bottleneck subassembly is including inlaying base and disk seat, inlays base and plastics inner bag and fuses the bonding as an organic whole, inlays the base center and is provided with the central connecting hole, inlays the central connecting hole of base in through screw thread and disk seat threaded connection, disk seat outside bottom extrusion and inlay the inboard plastics inner bag part that fuses the bonding of base and form sealedly.
2. The high-pressure hydrogen storage bottle with the plastic liner composite material as claimed in claim 1, wherein the inner layer of the plastic liner and the outer layer of the plastic liner are HDPE layers or PA layers.
3. The plastic liner composite high pressure hydrogen storage bottle as claimed in claim 1, wherein the barrier layer is an EVOH layer.
4. The composite high pressure hydrogen storage bottle with plastic inner container as claimed in claim 1, wherein the bottom of the inlaid base has a spherical surface to contact with the plastic inner container for fusion and bonding.
5. The high pressure hydrogen storage bottle with plastic inner container and composite material as claimed in claim 1, wherein the bottom of the central connecting hole of the inlaid base is provided with an annular groove with a tooth-shaped cross section, and the inlaid base is contacted with the plastic inner container through the annular groove at the bottom of the central connecting hole and fused and bonded into a whole.
6. The high pressure hydrogen storage bottle with plastic liner and composite material as claimed in claim 1, wherein the central connection hole of the inlaid base is internally provided with a conical internal thread, the upper part of the valve seat is correspondingly provided with a conical external thread, the inlaid base is in threaded connection with the valve seat, the inlaid base is an aluminum alloy base, and the surface of the inlaid base is subjected to silanization pretreatment.
7. The plastic liner composite material high-pressure hydrogen storage bottle as claimed in claim 1, wherein the valve seat is of a sleeve structure, a plurality of sealing grooves are formed in the lower portion of the outer side of the valve seat, spring energy storage sealing rings are respectively installed in the plurality of sealing grooves, the spring energy storage sealing rings are extruded with the plastic liner to form sealing, and a threaded connection port or a quick insertion connection port is formed in the top of the valve seat.
8. The high pressure hydrogen storage bottle with a plastic liner made of composite material as claimed in claim 1, wherein the winding layer is a carbon fiber winding layer formed by alternately winding a plurality of layers of carbon fiber on the outside of the plastic liner in a longitudinal spiral winding manner and a circumferential winding manner, and an adhesive layer is connected between the winding layer and the plastic liner.
9. The high pressure hydrogen storage bottle with plastic liner made of composite material as claimed in claim 1, wherein the outer protective layer is a glass fiber reinforced resin layer and is formed by alternately winding a plurality of layers of glass fiber outside the winding layer in longitudinal spiral winding and circumferential winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120636602.1U CN214535657U (en) | 2021-03-30 | 2021-03-30 | Plastic inner container composite material high-pressure hydrogen storage bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120636602.1U CN214535657U (en) | 2021-03-30 | 2021-03-30 | Plastic inner container composite material high-pressure hydrogen storage bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214535657U true CN214535657U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120636602.1U Active CN214535657U (en) | 2021-03-30 | 2021-03-30 | Plastic inner container composite material high-pressure hydrogen storage bottle |
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| CN (1) | CN214535657U (en) |
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2021
- 2021-03-30 CN CN202120636602.1U patent/CN214535657U/en active Active
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