阅读说明：本技术 一种碳纤维连丝结构储氢罐箱 (Carbon fiber continuous structure hydrogen storage tank box ) 是由 李锡放 于 2021-07-21 设计创作，主要内容包括：本发明公开了一种碳纤维连丝结构储氢罐箱,包括一个框架和若干个扁平型储氢容器,若干个扁平型储氢容器上下叠置并固定在框架内,每一个扁平型储氢容器均由一个紧密的碳纤维连丝结构扁平型储氢容器纤维预制体充填基体材料后固化成型,碳纤维连丝结构扁平型储氢容器纤维预制体采用碳纤维经纱、碳纤维纬纱和碳纤维垂纱以三维机织的方式制作而成。本发明可以用较小的壁厚来制作很高压力的扁平型压力容器,既节省了材料,又充分利用了集装箱内的空间,安全性好,储氢容积大,自重较轻,有很高的储氢质量密度和容积密度,既解决了长途公路运输的问题,也可直接用于加氢站的储氢容器,降低了加氢站的建设成本,提高了储氢罐的充装效率和安全性。(The invention discloses a carbon fiber connecting wire structure hydrogen storage tank box which comprises a frame and a plurality of flat hydrogen storage containers, wherein the flat hydrogen storage containers are vertically overlapped and fixed in the frame, each flat hydrogen storage container is formed by filling a compact carbon fiber connecting wire structure flat hydrogen storage container fiber preform with a matrix material and then curing, and the carbon fiber connecting wire structure flat hydrogen storage container fiber preform is manufactured by adopting a carbon fiber warp, a carbon fiber weft and a carbon fiber vertical yarn in a three-dimensional weaving mode. The invention can manufacture a flat pressure container with high pressure by using smaller wall thickness, not only saves materials, but also fully utilizes the space in the container, has good safety, large hydrogen storage volume, lighter self weight and higher hydrogen storage mass density and volume density, solves the problem of long-distance road transportation, can also be directly used for the hydrogen storage container of a hydrogen station, reduces the construction cost of the hydrogen station, and improves the filling efficiency and the safety of a hydrogen storage tank.)

1. The utility model provides a carbon fiber is hydrogen storage tank case of silk structure even which characterized in that: the flat hydrogen storage container comprises a frame (1) and a plurality of flat hydrogen storage containers (2), wherein the flat hydrogen storage containers (2) are vertically stacked and fixed in the frame (1), each flat hydrogen storage container (2) is formed by filling a compact carbon fiber continuous filament structure flat hydrogen storage container fiber preform with a matrix material and then curing, and the carbon fiber continuous filament structure flat hydrogen storage container fiber preform is manufactured by adopting carbon fiber warp yarns, carbon fiber weft yarns and carbon fiber vertical yarns in a three-dimensional weaving manner.

2. The carbon fiber wire structure hydrogen storage tank box according to claim 1, characterized in that: the carbon fiber continuous filament structure flat hydrogen storage container fiber preform is composed of an external three-dimensional woven carbon fiber shell (3) and an internal carbon fiber continuous filament structure (4), the three-dimensional woven carbon fiber shell (3) is of a four-side-sealed flat structure, a plurality of three-dimensional woven pipelines (5) used for being connected with a valve are arranged on the surface of the three-dimensional woven carbon fiber shell (3), the three-dimensional woven pipelines (5) and the three-dimensional woven carbon fiber shell (3) are integrally formed in a three-dimensional weaving mode, the carbon fiber continuous filament structure (4) is a plurality of double-wall-penetrating carbon fiber tows (401) uniformly distributed between the upper wall and the lower wall of the three-dimensional woven carbon fiber shell (3), and each carbon fiber tow (401) is positioned and fixed by a three-dimensional woven fabric of the double walls of the three-dimensional woven carbon fiber shell (3), so that the double walls of the three-dimensional woven carbon fiber shell (3) and the three-dimensional woven carbon fiber shell are positioned and fixed by the three-dimensional woven carbon fiber shell The carbon fiber connecting wire structure (4) positioned and fixed on the double walls of the body (3) jointly bears the internal pressure of the flat hydrogen storage container (2).

3. The carbon fiber wire structure hydrogen storage tank box according to claim 2, characterized in that: the actual distribution density of the carbon fiber tows (401) is not less than the theoretical distribution density, and the theoretical distribution density is calculated by the following formula:

C＝P/(T*S)

wherein C is the distribution density of the connecting filaments in the unit of root/cm²(ii) a P is the pressure in the container in kgf/cm²(ii) a T is the tensile strength of the carbon fiber and has a unit of kgf/mm²(ii) a S is the cross section area of the filament bundle and the unit is mm²。

4. The carbon fiber wire structure hydrogen storage tank box according to claim 2, characterized in that: be provided with banding (6) around flat type hydrogen storage container (2), banding (6) are the edge joint portion of two walls about three-dimensional woven carbon fiber casing (3), banding (6) are by running through the integrative structure that forms after the continuous perpendicular yarn of two wall limit portion layer thickness about three-dimensional woven carbon fiber casing (3) is binded and is tightened up, just be provided with on banding (6) be used for with the fixed trompil of frame (1).

5. The carbon fiber wire structure hydrogen storage tank box according to claim 2, characterized in that: the fiber material of the three-dimensional woven carbon fiber shell (3) is carbon fiber directly or is replaced by one or a mixture of a plurality of basalt fiber, aramid fiber, ultra-high molecular weight polyethylene fiber, glass fiber, quartz fiber, ceramic fiber or metal fiber according to the functional requirement; the base material is one or a mixture of a polymer material, a metal material and a ceramic material; the matrix material is well combined with the carbon fiber continuous filament structure flat hydrogen storage container fiber preform to form a container wall capable of preventing hydrogen leakage; or after the matrix material is solidified, covering a layer of hydrogen-blocking layer on the outer wall of the flat hydrogen storage container (2) so as to improve the effect of preventing hydrogen leakage.

6. The carbon fiber wire structure hydrogen storage tank box according to claim 2, characterized in that: the fiber material of the three-dimensional woven carbon fiber shell (3) is mixed with a high-conductivity material for preventing static electricity, and the high-conductivity material is a metal wire.

7. The carbon fiber wire structure hydrogen storage tank box according to claim 1, characterized in that: the side layer by layer of frame (1) is provided with the crossbeam, it has a plurality of screw holes that are used for fixing flat type hydrogen storage container (2) to open on the crossbeam, the size of frame (1) is standard container size, just the length and width size of flat type hydrogen storage container (2) with the length and width size of frame (1) is corresponding.

8. The carbon fiber wire structure hydrogen storage tank box according to claim 7, characterized in that: baffles (7) are arranged on six surfaces of the frame (1), the six baffles (7) seal the interior of the frame (1), and heat insulation materials are filled in the sealed frame (1) to insulate the flat hydrogen storage container (2); or on the basis of the above, the refrigerating system is set to keep low temperature for a longer time.

9. The carbon fiber wire structure hydrogen storage tank box according to claim 8, characterized in that: and a hydrogen sensor for detecting whether the substances stored in the flat hydrogen storage container (2) leak or not is arranged in the closed frame (1).

10. The carbon fiber wire structure hydrogen storage tank box according to claim 9, characterized in that: the closed hydrogen sensor is characterized in that a controller with a satellite positioning function is arranged in the frame (1), the hydrogen sensor is in signal connection with the controller, the controller is connected with the Internet of things, and safety monitoring is conducted in the whole process.

Technical Field

The invention belongs to the field of pressure vessels, and particularly relates to a hydrogen storage tank box with a carbon fiber connecting wire structure.

Background

Hydrogen storage pressure vessels, commonly referred to as hydrogen storage tanks, have undergone four types of development: the type I is a metal gas cylinder, the type II is a gas cylinder wound by metal liner reinforced fibers in the circumferential direction, the type III is a gas cylinder wound by metal liner reinforced fibers in the full direction, and the type IV is a gas cylinder wound by nonmetal liner reinforced fibers in the full directionAnd (5) maintaining the fully wound gas cylinder. These four-type hydrogen storage pressure vessels are all cylindrical in shape and are therefore referred to as gas cylinders. GB150.3-2011 gives the calculation formula of the internal pressure cylinder pressure container as follows:wherein δ is the calculated thickness of the cylinder, mm; do is the outer diameter of the gas cylinder, mm; pc is calculated pressure, MPa; σ is the calculated stress of the material, MPa.

From the above calculation formula, it can be seen that the wall thickness of the cylinder is proportional to the pressure and the outer diameter. Almost all internal pressure vessels on the market today are cylindrical, because the circular wall material resists the pressure better, the circumferential self-closing structure limits the deformation well and the forces are uniform. The wall of the structure is equivalent to a suspended beam structure without intermediate support, the circumference is equivalent to span without intermediate support, and when the load is increased, the wall thickness must be increased or the span, namely the diameter of the cylinder, must be reduced.

This structure also severely limits the development of pressure vessels, particularly hydrogen storage tanks. Because of the low density of hydrogen, two parameters, mass hydrogen storage density and volume hydrogen storage density, are adopted in the industry to evaluate the hydrogen storage capacity of the hydrogen storage system. The increase in the wall thickness, i.e., the weight of the cylinder, is required to increase the pressure or increase the radius to increase the hydrogen storage capacity of the cylinder, so that the improvement in the mass and volume hydrogen storage densities is limited.

Today, for the field of hydrogen transport, the technical requirements and challenges are: development of a hydrogen distribution and delivery system with lower cost and more reliability; development of advanced technologies and concepts for hydrogen distribution, including liquefaction and chemical hydrogen carrier; right of way and permission of hydrogen transportation, and reduction of investment risk of deploying hydrogen transportation infrastructure. Through expert research and analysis, the long-tube trailer hydrogen delivery is still the best solution for the development plan of thousands of fuel cell automobiles with scale.

At present, the gas cylinder of the long tube trailer is mostly an I-shaped cylinder, and the mass density of the I-shaped cylinder is only about 1 percent, so the transportation efficiency is low, the transportation cost is increased, and the transportation oil consumption is eaten by the dead weight of the steel cylinder. If the large-sized gas cylinder is wound by carbon fibers, ultra-large equipment is needed, and the large-sized gas cylinder can only be used as a II-type gas cylinder, namely, unidirectional winding; if multi-directional full winding is required, the device does not exist at home, similar large-scale devices exist abroad, but the device is mainly used in high-end fields such as aerospace, rocket manufacturing and the like. Therefore, the construction of the hydrogenation station is severely restricted by the problem of the transportation cost of the hydrogen.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a carbon fiber hydrogen storage tank box with a continuous wire structure, so as to reduce the cost of hydrogen transportation.

In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:

a carbon fiber continuous structure hydrogen storage tank box comprises a frame and a plurality of flat hydrogen storage containers, wherein the flat hydrogen storage containers are vertically stacked and fixed in the frame, each flat hydrogen storage container is formed by filling a compact carbon fiber continuous structure flat hydrogen storage container fiber preform with a matrix material and then curing, and the carbon fiber continuous structure flat hydrogen storage container fiber preform is manufactured and enclosed in a three-dimensional weaving mode through carbon fiber warp yarns, carbon fiber weft yarns and carbon fiber vertical yarns.

Furthermore, the carbon fiber continuous filament structure flat hydrogen storage container fiber preform is composed of an external three-dimensional woven carbon fiber shell and an internal carbon fiber continuous filament structure, the three-dimensional woven carbon fiber shell is of a flat structure with four sealed sides, a plurality of three-dimensional woven pipelines used for connecting valves are arranged on the surface of the three-dimensional woven carbon fiber shell, the three-dimensional woven pipelines and the three-dimensional woven carbon fiber shell are integrally formed in a three-dimensional weaving mode, the carbon fiber continuous filament structure is a plurality of carbon fiber tows which penetrate through the double walls and are uniformly distributed between the upper wall and the lower wall of the three-dimensional woven carbon fiber shell, each carbon fiber tow is positioned and fixed by the three-dimensional woven carbon fiber shell double-wall woven fabric, and therefore the double walls of the three-dimensional woven carbon fiber shell and the carbon fiber continuous filament structure positioned and fixed by the three-dimensional woven carbon fiber shell double walls jointly bear the internal pressure of the flat hydrogen storage container Force.

Further, the actual distribution density of the carbon fiber tows should not be less than the theoretical distribution density, and the theoretical distribution density is calculated by the following formula:

C＝P/(T*S)

wherein C is the distribution density of the connecting filaments in the unit of root/cm²(ii) a P is the pressure in the container in kgf/cm²(ii) a T is the tensile strength of the carbon fiber and has a unit of kgf/mm²(ii) a S is the cross section area of the filament bundle and the unit is mm²。

Furthermore, edge seals are arranged on the periphery of the flat hydrogen storage container, the edge seals are edge joint parts of the upper wall and the lower wall of the three-dimensional woven carbon fiber shell, the edge seals are of an integral structure formed by binding and tightening continuous vertical yarns penetrating through the thickness of edge layers of the upper wall and the lower wall of the three-dimensional woven carbon fiber shell, and openings used for fixing the frame are formed in the edge seals.

Furthermore, the fiber material of the three-dimensional woven carbon fiber shell can be directly carbon fiber, and can be replaced by one or a mixture of a plurality of basalt fiber, aramid fiber, ultra-high molecular weight polyethylene fiber, glass fiber, quartz fiber, ceramic fiber or metal fiber according to the functional requirements.

Further, the matrix material is one or a mixture of a polymer material, a metal material and a ceramic material; the matrix material should bond well with the carbon fiber continuous filament structure flat hydrogen storage vessel fiber preform to form a vessel wall that can prevent hydrogen leakage.

Furthermore, after the matrix material is solidified, a layer of hydrogen blocking layer can be covered on the outer wall of the flat hydrogen storage container so as to improve the effect of preventing hydrogen leakage.

Furthermore, a high-conductivity material for preventing static electricity is mixed in the fiber material of the three-dimensional woven carbon fiber shell, and the high-conductivity material is a metal wire.

Furthermore, the side of the frame is provided with a beam layer by layer, the beam is provided with a plurality of screw holes for fixing the flat hydrogen storage container, the size of the frame is the size of a standard container, and the length and width of the flat hydrogen storage container correspond to the length and width of the frame.

Furthermore, baffles are arranged on six surfaces of the frame, the interior of the frame is sealed by the six baffles, and heat insulation materials are filled in the sealed frame to insulate the flat hydrogen storage container.

Further, a refrigeration system can be arranged to keep low temperature for a long time on the basis of heat insulation. Because the hydrogen gas with the low temperature of 50 ℃ below zero is injected into the tank, the tank mainly keeps the low temperature and has the function of heat insulation, and the additional arrangement of a refrigeration system can keep the low temperature for a long time.

Further, a hydrogen sensor for detecting whether the substances stored in the flat hydrogen storage container leak or not is arranged in the closed frame.

Further, after the hydrogen sensor is sealed, a controller with a satellite positioning function is arranged in the frame, the hydrogen sensor is in signal connection with the controller, the controller is connected with the Internet of things, and safety monitoring is conducted in the whole process.

Compared with the prior art, the invention has the beneficial effects that:

the invention adopts three-dimensional weaving technology, directly organizes carbon fiber tows into a compact and firm hydrogen storage container preform in a three-dimensional orthogonal form, and carbon fiber connecting wire structures for bearing the internal pressure of the hydrogen storage container are uniformly and densely distributed between two walls of the hydrogen storage container preform, so that the hydrogen storage container can be used for manufacturing a pressure container with high pressure by using a smaller wall thickness, and the shape of the pressure container can be a non-cylindrical flat structure, thereby saving materials, fully utilizing the internal space of the container, and having good safety, large hydrogen storage volume, light self weight, and high hydrogen storage mass density and volume density.

The internal hydrogen storage volume of the hydrogen storage tank box designed according to the international standard 40-foot container frame size can reach 52.5m³According to the hydrogen pressure of 70MPa and the temperature of 20 DEG CThe total hydrogen storage capacity can reach 2.2 tons by density calculation. The hydrogen storage and transportation system has great significance in the hydrogen storage and transportation industry, the construction of a hydrogen filling station is severely restricted due to the problems of difficult hydrogen storage and high long-distance transportation cost, a hydrogen source production place and a use place are usually at a distance of hundreds of kilometers to thousands of kilometers, hydrogen is transported in the conventional long-tube trailer mode, each vehicle can only load more than 300 kilograms of hydrogen, the long-distance transportation is quite uneconomical, and a strange circle of 'few vehicles, no station and no vehicle purchase' appears in the popularization of hydrogen fuel cells. However, the carbon fiber hydrogen storage tank box with the continuous filament structure not only solves the problem of long-distance road transportation, but also can be directly used for a hydrogen storage container of a hydrogen station, reduces the construction cost of the hydrogen station, and improves the filling efficiency and the safety of the hydrogen storage tank.

The technical scheme of the invention can also be used for designing and manufacturing the CNG transport tank.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is made with reference to the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic view showing the overall structure of a hydrogen storage tank case of a carbon fiber continuous filament structure according to the present invention;

FIG. 2 is a schematic view of the frame of the present invention;

FIG. 3 is an external view of a single flat-type hydrogen storage vessel of the present invention;

FIG. 4 is a schematic view of a carbon fiber chain structure of the present invention;

FIG. 5 is a schematic cross-sectional view of a double wall edge seal of the present invention;

FIG. 6 is a schematic view of the three-dimensional woven fiber preform with the vertical weaving method of the present invention;

fig. 7 is an external structural view of the present invention with a sealing baffle attached.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1-3, a carbon fiber hydrogen storage tank box with a continuous filament structure comprises a frame 1 and a plurality of flat hydrogen storage containers 2, wherein the flat hydrogen storage containers 2 are stacked up and down and fixed in the frame 1, each flat hydrogen storage container 2 is formed by filling a compact carbon fiber continuous filament structure flat hydrogen storage container fiber preform with a matrix material and then curing, and the carbon fiber continuous filament structure flat hydrogen storage container fiber preform is manufactured and enclosed by carbon fiber warp yarns, carbon fiber weft yarns and carbon fiber vertical yarns in a three-dimensional weaving manner.

Further, referring to fig. 1 and 2, a beam is disposed on a side surface of the frame 1 layer by layer, and a plurality of screw holes are formed on the beam to fix the flat hydrogen storage container 2.

Further, referring to fig. 3-5, the flat hydrogen storage container fiber preform with the carbon fiber continuous filament structure is composed of an outer three-dimensional woven carbon fiber shell 3 and an inner carbon fiber continuous filament structure 4, the three-dimensional woven carbon fiber shell 3 is of a four-side sealed flat structure, a plurality of three-dimensional woven pipelines 5 for connecting valves are arranged on the surface of the three-dimensional woven carbon fiber shell 3, the three-dimensional woven pipelines 5 and the three-dimensional woven carbon fiber shell 3 are integrally formed in a three-dimensional weaving manner, the carbon fiber continuous filament structure 4 is a plurality of through double-wall carbon fibers 401 uniformly distributed between the upper wall and the lower wall of the three-dimensional woven carbon fiber shell 3, each carbon fiber bundle 401 is positioned and fixed by the double-wall three-dimensional woven carbon fiber shell 3 and the double-wall of the three-dimensional woven carbon fiber shell 3, so that the double-wall of the three-dimensional woven carbon fiber shell 3 and the double-wall positioned and fixed by the three-dimensional woven carbon fiber shell 3 are fixed The carbon fiber connecting wire structure 4 bears the internal pressure of the flat hydrogen storage container 2 together.

The integral forming technology of the three-dimensional woven fabric is one of the superior technologies to the traditional metal material. When a large-scale closed container is manufactured by using a traditional metal material, seams are inevitably required to be processed, and the common welding, flange, bolt, riveting and the like have strength problems and sealing problems. The integral forming technology of the three-dimensional woven fabric is also a seamless integral forming technology, is very suitable for manufacturing large pressure containers, and does not have the strength problem and the leakage problem caused by seams. The tank body mentioned here is used for connecting pipes of valves, and the three-dimensional weaving technology can be easily processed without seams, which is difficult in the conventional metal material.

Further, the actual distribution density of the carbon fiber tow 401 should not be less than the theoretical distribution density, and the theoretical distribution density is calculated by the following formula:

C＝P/(T*S)

wherein C is the distribution density of the connecting filaments in the unit of root/cm²(ii) a P is the pressure in the container in kgf/cm²(ii) a T is the tensile strength of the carbon fiber and has a unit of kgf/mm²(ii) a S is the cross section area of the filament bundle and the unit is mm²。

For example, if a 70MPa hydrogen storage pressure vessel is designed and manufactured, and the safety factor is 2.0, the pressure in the vessel is 70MPa 2-140 MPa, and the tensile strength of the T300 carbon fiber is 360kgf/mm²The cross section area of the 24K carbon fiber tows is 0.9236mm²，

According to the formula C/(T S) 140 100/9.8/(360 0.9236) 4.3 pieces/cm²，

The T300 carbon fiber is the lowest grade carbon fiber and the cheapest carbon fiber, but in the hydrogen storage pressure container with the continuous filament structure, the continuous filament distribution density is more than or equal to 4.3 pieces/cm²Therefore, the 70MPa hydrogen storage pressure vessel can be safely manufactured, and the low cost and high performance are clear at a glance. The weft distribution density of the connecting wires is set to be 2 pieces/cm and the warp beating-up density is set to be 2 pieces/9 mm in the weaving process, so that the requirement can be met. Particularly, the design is only related to the pressure in the container and the tensile strength of the connecting wire, and is not related to the volume of the container, which means that the pressure container with a large-volume connecting wire structure is manufactured, and the advantages of the mass density and the volume density of hydrogen storage are betterAnd (5) displaying.

The three-dimensional weaving technology adopted by the invention can uniformly and densely distribute the high-performance reinforced fiber tows between the opposite container walls, and the high-performance reinforced fiber tows with equal length can also play a role in limiting the deformation and uniform stress of the pressure container, so that the non-cylindrical pressure container, such as the pressure container with a flat shape, can be manufactured.

The uniformly dense carbon fiber tow can be seen in fig. 4 and 5. Because of the excellent tensile strength of carbon fibers, the pressure vessel of this construction can withstand large pressures with a small wall thickness. Therefore, the using amount of the carbon fiber is reduced, the weight of the pressure vessel is reduced, the cost is reduced, and the mass density and the volume density value of the hydrogen storage pressure vessel can be greatly improved. The flat hydrogen storage container 2 is designed according to the hydrogen storage pressure of 70MPa, and the internal volume of the flat hydrogen storage container can reach 8.76m³。

Furthermore, edge seals 6 are arranged on the periphery of the flat hydrogen storage container 2, the edge seals 6 are edge joint parts of the upper wall and the lower wall of the three-dimensional woven carbon fiber shell 3, and the edge seals 6 are of an integral structure formed by binding and tightening continuous vertical yarns penetrating through the thickness of edge layers of the upper wall and the lower wall of the three-dimensional woven carbon fiber shell 3; and the seal edge 6 is provided with an opening and can be fixed with a beam on the frame 1.

The use of drop yarns is of critical importance in three-dimensional weaving processes. On one hand, the vertical yarns increase the distribution of the reinforced fibers of the three-dimensional woven fabric in the thickness direction, and are beneficial to improving the mechanical strength of the composite material in the thickness direction; in the other direction, the fly of the vertical yarns and the connecting vertical yarns realizes interlayer tightening and binding of the three-dimensional multilayer fabric, so that the warp yarns, the weft yarns and the vertical yarns in the three-dimensional woven fabric form a tightly connected whole. The adoption of the weaving method of the vertical yarns can also weave a closed container integrally.

Referring to fig. 6, fig. 6 is a schematic view showing the upper and lower walls and the sealing edge of a carbon fiber filament structure flat hydrogen storage container fiber preform woven into a flat hydrogen storage container by a vertical weaving method. In the context of figure 6, it is shown,

a1 denotes a No. 1 drop, which tightens the seal and the upper wall, noting that the thickness of the upper wall is only 1/2 of the seal; a2 represents No. 2 hang yarn, which is the complement of No. 1 hang yarn, i.e. the upward flight of No. 1 hang yarn is corresponding to the downward flight of No. 2 hang yarn, and the No. 1 hang yarn and the No. 2 hang yarn are alternately applied, so that the upper wall of the carbon fiber continuous filament structure flat hydrogen storage container fiber preform and the edge sealing are integrated;

a3 represents No. 3 drop yarns, the edge sealing and the lower wall are tightened, the thickness of the lower wall is only 1/2 of the edge sealing, A4 represents No. 4 drop yarns, the No. 3 drop yarns are complement to the No. 3 drop yarns, namely the upward flight of the No. 3 drop yarns corresponds to the downward flight of the No. 4 drop yarns, and the No. 3 drop yarns and the No. 4 drop yarns are alternately applied, so that the lower wall of the carbon fiber continuous filament structure flat hydrogen storage container fiber preform and the edge sealing are integrated;

a5 shows the effect of the alternative application of No. 1-4 drop yarns, and the effect of the integral weaving and forming of the edge sealing and the two walls of the flat hydrogen storage container fiber preform with the carbon fiber continuous filament structure can be seen under the constraint, tightening and binding of the drop yarns.

Further, the fiber material of the three-dimensional woven carbon fiber shell 3 can be directly carbon fiber, and can be replaced by one or a mixture of a plurality of basalt fiber, aramid fiber, ultra-high molecular weight polyethylene fiber, glass fiber, quartz fiber, ceramic fiber or metal fiber according to the functional requirements.

Further, the matrix material is one or a mixture of a polymer material, a metal material and a ceramic material; the matrix material should bond well with the carbon fiber continuous filament structure flat hydrogen storage vessel fiber preform to form a vessel wall that can prevent hydrogen leakage.

Furthermore, after the matrix material is solidified, a hydrogen barrier layer can be covered on the outer wall of the flat hydrogen storage container 2 to improve the effect of preventing hydrogen leakage.

Further, a high conductive material for preventing static electricity is mixed in the fiber material of the three-dimensional woven carbon fiber shell 3, and the high conductive material is a metal wire.

Further, as shown in fig. 1 and 2, the frame 1 has a size of a 40-foot international container, and the flat type hydrogen storage vessel 2 has a length and width dimension corresponding to that of the frame 1, thereby facilitating lifting, transportation, and stacking; a plurality of hydrogen storage tank boxes can be stacked, so that the high-pressure hydrogen tank box solves the problem of hydrogen transportation; even the hydrogen storage tank can be directly used as the hydrogen storage tank of the hydrogenation station, thus solving the problem of high construction cost of the hydrogenation station.

Referring to FIG. 1, 6 flat hydrogen storage vessels are installed in a standard 40 foot container frame to achieve a total volume of 52.5m³The total hydrogen storage capacity can reach 2.2 tons according to the density calculation of hydrogen at the pressure of 70MPa and the temperature of 20 ℃.

Further, as shown in fig. 7, baffles 7 are provided on six surfaces of the frame 1, the frame 1 is internally sealed by the six baffles 7, and the flat hydrogen storage container 2 is thermally insulated by filling a thermal insulating material into the sealed frame 1.

Further, a refrigeration system can be arranged to keep low temperature for a long time on the basis of heat insulation. Because the hydrogen gas with the low temperature of 50 ℃ below zero is injected into the tank, the tank mainly keeps the low temperature and has the function of heat insulation, and the additional arrangement of a refrigeration system can keep the low temperature for a long time.

The hydrogen storage amount of the hydrogen storage tank box with the carbon fiber continuous filament structure is shown in the following table at different pressure and temperature:

pressure @ temperature	Hydrogen storage capacity
		[email protected]℃	3064.622114 ton
[email protected]℃	2729.993017 ton
		[email protected]℃	2589.027629 ton
[email protected]℃	2242.035904 ton

Since the pressure density curve of hydrogen decreases after 70MPa, the simplest method is to increase the hydrogen storage density at low temperature and high pressure, and neither 0 ℃ can meet the requirements, at least-50 ℃. As can be seen from the above table, the hydrogen storage capacity of the large-sized can body of the invention can reach 3 tons at 100MPa @ 50 ℃ and is 36 percent higher than that of the large-sized can body at 70MPa @20 ℃, so that the large-sized can body is economical for long-distance transportation at low temperature and high pressure.

Further, a hydrogen sensor for detecting whether the substances stored in the flat hydrogen storage container 2 leak or not is arranged in the closed frame 1.

Further, a controller with a satellite positioning function is arranged in the closed frame 1, the hydrogen sensor is in signal connection with the controller, the controller is connected with the Internet of things, and safety monitoring is conducted in the whole process.

Therefore, the carbon fiber continuous structure hydrogen storage tank box has the advantages of large volume, light weight, high bearable pressure and high hydrogen storage mass density and volume density. Compared with the traditional steel gas cylinder, the invention can meet the hydrogen storage requirement with smaller wall thickness under the condition of the same pressure and volume. Meanwhile, the hydrogen storage tank box with the carbon fiber continuous structure has the outstanding advantage of safety.

The traditional steel gas cylinder is constructed in the same model as a bomb, so the high-pressure gas cylinder always has terror feeling of a big bomb. Although the carbon fiber wound gas cylinder is better, the metal liner or the nonmetal liner of the carbon fiber wound gas cylinder is a bomb model, and thick high-strength carbon fiber wires are only wrapped outside the carbon fiber wound gas cylinder, so that the carbon fiber wound gas cylinder is safe when the carbon fiber is thick enough, and particularly, the principle of 'explosion before leakage' ensures that the carbon fiber wound gas cylinder is an 'bomb' which cannot be exploded.

The carbon fiber continuous wire structure hydrogen storage tank box is completely different from a bomb in forming models, each square centimeter of the container wall is drawn by a plurality of high-performance reinforced fibers in a limiting mode, the container wall is formed by weaving the high-performance reinforced fibers in a three-dimensional mode in a criss-cross mode, bomb fragments are not generated at all, even if the container wall is damaged by a strong force, part of the high-performance reinforced fibers are broken, leakage occurs, the bomb explosion does not occur, and the carbon fiber continuous wire structure hydrogen storage tank box is a structure naturally meeting the principle that a pressure container leaks before explosion occurs. Therefore, compared with the pressure container of the traditional steel gas cylinder, the carbon fiber hydrogen storage tank box with the continuous wire structure has higher safety. The technical scheme of the invention can also be used for designing and manufacturing the CNG transport tank.

The project of the invention has great significance for 'carbon peak reaching and carbon neutralization' plans in China, because the problems of storage and transportation of hydrogen energy sources are solved. With the carbon fiber continuous wire structure hydrogen storage tank box, wind power generation, hydrogen production, hydrogen storage, transportation and photoelectricity, hydrogen production, hydrogen storage and transportation are carried out, so that an unattended and automatically-operated hydrogen energy station can be established in an unmanned wasteland and an unmanned desert.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.