CN115789499A - Capillary tube hydrogen storage device and manufacturing method of capillary tube hydrogen storage unit thereof - Google Patents
Capillary tube hydrogen storage device and manufacturing method of capillary tube hydrogen storage unit thereof Download PDFInfo
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- CN115789499A CN115789499A CN202211558558.2A CN202211558558A CN115789499A CN 115789499 A CN115789499 A CN 115789499A CN 202211558558 A CN202211558558 A CN 202211558558A CN 115789499 A CN115789499 A CN 115789499A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
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Abstract
The invention discloses a capillary tube hydrogen storage device and a manufacturing method of a capillary tube hydrogen storage unit thereof. Wherein capillary stores up hydrogen unit including capillary, capillary stores up hydrogen unit and includes storing up hydrogen unit stay tube, stores up the upper end of hydrogen unit stay tube and is storing up the hydrogen unit open end, stores up hydrogen unit open end and is connected with the encapsulation valve, stores up the lower extreme of hydrogen unit stay tube and is storing up hydrogen unit blind end, stores up and is equipped with a plurality of once compound pipes in the hydrogen unit stay tube, is equipped with the capillary tube in the compound pipe of once, the clearance of once compound pipe and storing up hydrogen unit stay tube. The capillary hydrogen storage unit is wrapped by the shell and the buffer layer, and the shell is made of thin-wall metal and provides impact protection for the capillary hydrogen storage unit inside. The buffer layer is arranged between the shell and the capillary hydrogen storage unit and is made of relatively soft organic materials such as foam rubber or epoxy resin, and the damage of external impact force to the internal capillary hydrogen storage unit can be reduced. The capillary hydrogen storage device has compact structure, light weight and high mechanical strength.
Description
Technical Field
The invention belongs to the technical field of hydrogen storage, and particularly relates to a capillary hydrogen storage device and a manufacturing method of a capillary hydrogen storage unit thereof.
Background
Hydrogen energy is a recognized green energy source, and the combustion product of the hydrogen energy is only water, so that the hydrogen energy is a low-carbon and zero-carbon energy source. The hydrogen energy industry becomes the key development direction of future industry in China. In addition, hydrogen has a high energy density and is an ideal fuel for fuel cells. In the process of production and utilization of hydrogen, a hydrogen storage technology runs through an industrial chain from a hydrogen energy end to a fuel cell end, and is an important link for controlling the cost of the hydrogen.
In the prior art, a high-pressure metal gas cylinder for storing conventional gas is difficult to store hydrogen at high pressure due to the hydrogen embrittlement phenomenon of metal. In order to solve the hydrogen embrittlement problem of metal high-pressure gas cylinders, glass capillary arrays have been proposed as storage containers for high-pressure hydrogen gas. The invention discloses a microtubule hydrogen storage device with the application number of CN202110756468.3, and provides a microtubule structure in regular hexagonal arrangement, wherein a hexagonal glass tube is adopted as a supporting framework inside the microtubule structure to form a honeycomb-like structure, so that the overall structure of the microtubule hydrogen storage device is enhanced. However, the conventional glass tubes on the market are all cylindrical, the hexagonal glass tubes are complex to process, cost is inevitably increased, the hexagonal arrangement process is complex, dislocation of a hexagonal structure is easily caused due to uneven stress in the drawing process, and stress concentration positions are formed in the microcolumns, so that the overall compressive strength of the microcolumns is reduced.
Disclosure of Invention
In view of the above-mentioned disadvantages in the prior art, an object of the present invention is to provide a capillary hydrogen storage device which has a compact and light structure, high mechanical strength, simple manufacturing process, and easily available raw materials. Another object of the present invention is to provide a method for manufacturing a capillary hydrogen storage unit in the capillary hydrogen storage device.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
on the one hand, provide a capillary tube hydrogen storage device, it includes capillary tube hydrogen storage unit, capillary tube hydrogen storage unit includes stores up hydrogen unit stay tube, stores up the upper end of hydrogen unit stay tube and is storing up hydrogen unit open end, stores up hydrogen unit open end and is connected with the encapsulation valve, stores up the lower extreme of hydrogen unit stay tube and is storing up hydrogen unit blind end, stores up and is equipped with a plurality of once compound pipes in the hydrogen unit stay tube, in once compound pipe, once compound pipe and store up hydrogen unit stay tube's clearance and be equipped with the capillary tube.
Furthermore, the hydrogen storage unit supporting tube, the primary composite tube and the capillary tube are all glass round tubes.
Furthermore, the hydrogen storage unit supporting tube is sleeved with a buffer layer made of organic materials.
Further, the buffer layer overcoat is equipped with metal casing.
Furthermore, a gas valve is arranged on the packaging valve.
Furthermore, the diameter of the capillary hydrogen storage sheet is 5-60mm, and the length is 100-2000mm.
Furthermore, the thickness of the buffer layer is 1-20mm, and the thickness of the shell is 0.5-5mm.
In another aspect, there is provided a method for manufacturing a capillary hydrogen storage unit, the method comprising the steps of:
s1, putting a thin-wall glass tube into a heating furnace, heating the thin-wall glass tube to a softening state, and drawing the thin-wall glass tube into a capillary tube;
s2, filling thin and orderly arranged capillary tubes in the wall glass tube to form a primary composite bar;
s3, placing the primary composite bar into a heating furnace, heating and softening, and drawing to form a primary composite pipe;
s4, filling the primary composite tube in the thin-wall glass tube, and filling a gap of the primary composite tube and a gap between the primary composite tube and the thin-wall glass tube by using a capillary tube to form a secondary composite bar;
s5, placing the secondary composite bar into a heating furnace, heating and softening, and drawing and cutting to form a hydrogen storage unit blank tube;
and S6, heating one end of the hydrogen storage unit billet tube by adopting a high-temperature spray gun, melting, self-sealing to form a water-drop-shaped closed end, and finishing the manufacture of the capillary hydrogen storage unit.
Further, in steps S1, S2, and S4, the thin-walled glass tube is a circular glass tube made of borosilicate glass or quartz glass.
Further, in step S1, the diameter ratio of the thin-walled glass tube to the capillary tube is greater than 10.
The invention has the beneficial effects that:
1. the capillary hydrogen storage unit comprises a plurality of glass tubes bonded together through a high-temperature drawing process, and the capillary tubes and the primary composite tubes in the capillary hydrogen storage unit are firmly wrapped by the outermost hydrogen storage unit supporting tube. The hydrogen storage unit supporting tube can enhance the capability of the capillary tube and the primary composite tube for bearing hydrogen pressure, and improve the upper limit of the hydrogen pressure bearing value of the capillary hydrogen storage unit.
2. The primary composite tube gap and the primary composite tube and hydrogen storage unit supporting tube gap are filled with the capillary tubes, so that on one hand, stress concentration caused by deformation of the primary composite tube in the drawing process can be reduced, on the other hand, the duty ratio of the capillary hydrogen storage unit can be increased, and the hydrogen storage capacity of the capillary hydrogen storage unit is improved.
3. The primary composite tube and the capillary tube form a net structure which is mutually supported like plant cell walls in the capillary hydrogen storage unit, on one hand, the overall strength of the capillary hydrogen storage unit can be improved, on the other hand, the capillary tube is divided into different units, and the damage to the capillary hydrogen storage unit caused by the damage of part of the capillary tube can be reduced.
4. The capillary hydrogen storage unit is wrapped by the shell and the buffer layer, and the shell is made of thin-wall metal and provides impact protection for the capillary hydrogen storage unit inside. The buffer layer is arranged between the shell and the capillary hydrogen storage unit and is made of relatively soft organic materials such as foam rubber or epoxy resin, and the damage of external impact force to the internal capillary hydrogen storage unit can be reduced. The open end of the capillary tube hydrogen storage unit is connected with the packaging valve by packaging glue, and the packaging valve is provided with a switch to control the on-off of the gas inside the capillary tube hydrogen storage device and the external gas.
5. The capillary hydrogen storage unit is drawn by glass round tubes, glass tubes with special shapes are not needed, and the material cost is low. The die is not needed in the filament arrangement process, the filament arrangement process is simpler, the capillary hydrogen storage unit is directly drawn, the whole process flow is simple and efficient, and the large-scale mass production is easier to realize.
Drawings
FIG. 1 is a schematic front and top sectional view of the apparatus of the present invention;
FIG. 2 is a schematic diagram of the structure of a capillary hydrogen storage unit of the device of the present invention;
wherein: 1. a capillary hydrogen storage unit; 1-1, an open end of the hydrogen storage unit; 1-2, a closed end of the hydrogen storage unit; 2. a buffer layer; 3. a housing; 4. packaging the valve; 5. a hydrogen storage unit supporting tube; 6. primary composite pipe; 7. a capillary tube.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
Example 1
A capillary tube hydrogen storage device is provided, which comprises a capillary tube hydrogen storage unit 1, wherein the diameter of the capillary tube hydrogen storage unit 1 is 5-60mm, and the length is 100-2000mm. The capillary hydrogen storage unit 1 comprises a hydrogen storage unit supporting tube 5, and a buffer layer 2 made of organic materials is sleeved outside the hydrogen storage unit supporting tube 5. The buffer layer 2 is sleeved with a metal shell 3. The thickness of the buffer layer 2 is 1-20mm, and the thickness of the shell 3 is 0.5-5mm. The upper end of the hydrogen storage unit supporting tube 5 is a hydrogen storage unit opening end 1-1, the hydrogen storage unit opening end 1-1 is connected with a packaging valve 4, and the packaging valve 4 is provided with a gas valve. The lower end of the hydrogen storage unit supporting tube 5 is a closed end 1-2 of the hydrogen storage unit, a plurality of primary composite tubes 6 are arranged in the hydrogen storage unit supporting tube 5, and capillary tubes 7 are arranged in the primary composite tubes 6 and gaps between the primary composite tubes 6 and the hydrogen storage unit supporting tube 5.
Specifically, the hydrogen storage unit support tube 5, the primary composite tube 6 and the capillary tube 7 are all glass round tubes. The capillary hydrogen storage unit 1 is wrapped by the shell 3 and the buffer layer 2, and the shell 3 is made of thin-wall metal and provides impact protection for the capillary hydrogen storage unit 1 inside. Buffer layer 2 is between shell 3 and capillary hydrogen storage unit 1, and buffer layer 2 is the relatively soft organic material such as foamed glue or epoxy, can reduce the damage of external impact to inside capillary hydrogen storage unit 1. The open end of the capillary hydrogen storage unit 1 is connected with the packaging valve 4 by packaging glue, and the packaging valve 4 is provided with a switch to control the on-off of the gas in the capillary hydrogen storage device and the external gas.
Example 2
There is provided a method of manufacturing the capillary hydrogen storage unit of example 1, the method including the steps of:
s1, selecting a group of borosilicate glass tubes with the tube diameter of 5-60mm and the wall thickness of 1-10mm as a mother tube for drawing a capillary hydrogen storage unit 1, cleaning the mother tube with acid-base solution, cleaning the mother tube with purified water, and drying the glass mother tube by using inert gas;
s2, fixing one end of the cleaned glass main pipe on a stepping motor, and feeding the other end of the cleaned glass main pipe into a cylindrical hollow heating furnace, wherein the central axis of the glass main pipe is consistent with that of the heating furnace, so that the glass main pipe is uniformly heated in the heating furnace, and the temperature of the heating furnace is 500-1000 ℃;
s3, after the glass mother tube is softened in a heating furnace, leading out the glass mother tube with the softened lower end from the heating furnace, placing the glass mother tube on a wire drawing workpiece below, sending the glass mother tube into the heating furnace by an upper stepping motor at a uniform speed of 0.5-100 mm/min, drawing the glass mother tube softened by the heating furnace by the wire drawing workpiece at a uniform speed of 1-10000 mm/min to form a glass thin tube with the diameter of 50-5000 mu m, and cutting the glass thin tube with a fixed length to form a capillary tube 7;
s4, plugging a plurality of capillary tubes 7 into a glass mother tube, wherein the diameter ratio of the glass mother tube to the capillary tubes 7 is larger than 10, the glass mother tube full of the glass sub tubes is called a primary composite bar, and one end of the primary composite bar is sintered and solidified by a high-temperature spray gun to form a water-drop-shaped closed end;
s5, placing the closed end of the primary composite rod downwards into a heating furnace, fixing the open end of the primary composite rod on a stepping motor at the upper end, and drawing the primary composite rod to form a primary composite tube 6 similar to the process of drawing the capillary tube in the steps S2 and S3, wherein the diameter of the primary composite glass tube is 1-5mm;
s6, the primary composite pipe 6 is plugged into a glass mother pipe, a gap between the primary composite pipe 6 and the glass mother pipe is filled with the capillary tube 7, the glass mother pipe filled with the primary composite pipe 6 and the capillary tube 7 becomes a secondary composite bar, and one end of the secondary composite bar is sintered by a high-temperature spray gun to form a water drop-shaped closed end;
and S7, repeating the steps S2 and S3 again on the secondary composite bar to obtain an unsealed capillary hydrogen storage unit 1, and sintering and sealing one end of the unsealed capillary hydrogen storage unit 1 by using a high-temperature spray gun to finish the drawing of the capillary hydrogen storage unit 1.
The capillary hydrogen storage unit provided by the invention is drawn by glass round tubes, glass tubes with special shapes are not needed, and the material cost is low. The die is not needed in the filament arranging process, the filament arranging process is simpler, the capillary hydrogen storage unit is directly drawn, the whole process flow is simple and efficient, and the large-scale mass production is easier to realize.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The capillary hydrogen storage device is characterized by comprising a capillary hydrogen storage unit (1), wherein the capillary hydrogen storage unit (1) comprises a hydrogen storage unit supporting pipe (5), the upper end of the hydrogen storage unit supporting pipe (5) is a hydrogen storage unit opening end (1-1), the hydrogen storage unit opening end (1-1) is connected with a packaging valve (4), the lower end of the hydrogen storage unit supporting pipe (5) is a hydrogen storage unit closed end (1-2), a plurality of primary composite pipes (6) are arranged in the hydrogen storage unit supporting pipe (5), and capillary pipes (7) are arranged in gaps between the primary composite pipes (6) and the hydrogen storage unit supporting pipe (5).
2. The capillary hydrogen storage device according to claim 1, wherein the hydrogen storage unit support tube (5), the primary composite tube (6) and the capillary tube (7) are all glass round tubes.
3. Capillary hydrogen storage device according to claim 1, characterized in that the hydrogen storage unit support tube (5) is sheathed with a buffer layer (2) made of organic material.
4. Capillary hydrogen storage device according to claim 3, characterized in that the buffer layer (2) is externally sheathed with a metal casing (3).
5. Capillary hydrogen storage device according to claim 1, characterized in that the encapsulation valve (4) is provided with a gas valve.
6. Capillary hydrogen storage device according to claim 1, characterized in that the capillary hydrogen storage unit (1) has a diameter of 5-60mm and a length of 100-2000mm.
7. Capillary hydrogen storage device according to claim 4, characterized in that the thickness of the buffer layer (2) is 1-20mm and the thickness of the housing (3) is 0.5-5mm.
8. A method of manufacturing a capillary hydrogen storage unit according to claim 1, comprising the steps of:
s1, putting a thin-wall glass tube into a heating furnace, heating the thin-wall glass tube to a softening state, and drawing the thin-wall glass tube into a capillary tube (7);
s2, filling thin and orderly arranged plugged capillary sub-tubes (7) in the wall glass tube to form a primary composite bar;
s3, placing the primary composite bar into a heating furnace, heating and softening, and drawing to form a primary composite pipe (6);
s4, filling the thin-wall glass tube with a primary composite tube (6), and filling a gap of the primary composite tube (6) and a gap between the primary composite tube (6) and the thin-wall glass tube with a capillary tube (7) to form a secondary composite bar;
s5, placing the secondary composite bar into a heating furnace, heating and softening, and drawing and cutting to form a hydrogen storage unit blank tube;
s6, heating one end of the hydrogen storage unit billet tube by adopting a high-temperature spray gun, melting, and self-sealing to form a water-drop-shaped closed end (1-2), thus completing the manufacture of the capillary hydrogen storage unit (1).
9. The method for manufacturing a capillary hydrogen storage unit according to claim 8, wherein in steps S1, S2, S4, the thin-walled glass tube is a circular glass tube made of borosilicate glass or quartz glass.
10. The method for manufacturing a capillary hydrogen storage unit according to claim 8, wherein in step S1, the ratio of the thin-walled glass tube to the capillary tube (7) is greater than 10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211558558.2A CN115789499A (en) | 2022-12-06 | 2022-12-06 | Capillary tube hydrogen storage device and manufacturing method of capillary tube hydrogen storage unit thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211558558.2A CN115789499A (en) | 2022-12-06 | 2022-12-06 | Capillary tube hydrogen storage device and manufacturing method of capillary tube hydrogen storage unit thereof |
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| CN202211558558.2A Pending CN115789499A (en) | 2022-12-06 | 2022-12-06 | Capillary tube hydrogen storage device and manufacturing method of capillary tube hydrogen storage unit thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116535087A (en) * | 2023-04-28 | 2023-08-04 | 北方夜视科技(南京)研究院有限公司 | Glass capillary array for gas storage and preparation method thereof |
| CN117069367A (en) * | 2023-10-17 | 2023-11-17 | 扬州众鑫特种玻璃有限公司 | Preparation device and method of glass micro hydrogen storage tube |
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2022
- 2022-12-06 CN CN202211558558.2A patent/CN115789499A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116535087A (en) * | 2023-04-28 | 2023-08-04 | 北方夜视科技(南京)研究院有限公司 | Glass capillary array for gas storage and preparation method thereof |
| CN117069367A (en) * | 2023-10-17 | 2023-11-17 | 扬州众鑫特种玻璃有限公司 | Preparation device and method of glass micro hydrogen storage tube |
| CN117069367B (en) * | 2023-10-17 | 2024-01-02 | 扬州众鑫特种玻璃有限公司 | Preparation device and method of glass micro hydrogen storage tube |
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