Temporary explosion-proof storage tank for hydrogen

Abstract

The invention relates to the technical field of anti-explosion storage tanks, in particular to a temporary hydrogen anti-explosion storage tank which comprises a shell, a first frame is fixedly connected to the upper end of the shell, unfolding mechanisms are arranged on the surfaces of the two ends of the shell, and pressure relief mechanisms are arranged at the ends, close to the unfolding mechanisms, of the two ends of the shell. A diluting mechanism is arranged on the surface of each shell, sealing cloth is fixedly connected to one end of each shell, the multiple shells are connected through carbon fiber rubber through the arranged structure, the shells can be folded, the multiple shells are unfolded to form included angles to relieve pressure of internal hydrogen, and meanwhile the sealing cloth can be unfolded to store hydrogen. Meanwhile, the multiple shells can play a warning role when being unfolded, the larger the unfolding angle of the multiple shells is, the larger the hydrogen pressure in the shells is, the arranged structure can automatically release pressure when the hydrogen pressure in the sealing cloth is too large when the shells are unfolded to a certain angle, and the hydrogen in the shells is automatically released into the outside air.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof storage tanks, in particular to a temporary explosion-proof storage tank for hydrogen. Background Art

[0002] A temporary explosion-proof hydrogen storage tank is a special container for storing hydrogen. It is designed to ensure the safety of hydrogen during temporary storage and prevent explosion accidents caused by hydrogen leakage, accumulation or accidental ignition. A temporary explosion-proof hydrogen storage tank is a constant pressure variable volume (wet gas storage cabinet) or variable pressure constant volume container specially used to store hydrogen.

[0003] Although many hydrogen storage tanks are made of high-strength, corrosion-resistant materials, such as 316L stainless steel or alloy materials, these materials may still suffer from stress corrosion and hydrogen embrittlement after long-term contact with hydrogen, thus affecting the strength and safety of the tank. When the hydrogen storage pressure is high, the weight of hydrogen in gas cylinders made of ordinary steel is low, which limits its hydrogen storage efficiency and may increase safety hazards. If there are defects in the design of hydrogen storage tanks, such as unstable structure and poor interface sealing, it may lead to accidents such as hydrogen leakage or explosion.

[0004] During the use of existing hydrogen storage tanks, when hydrogen is compressed and stored in high-pressure tanks, if the tank material cannot withstand the internal high pressure, or there are defects in the tank (such as cracks, corrosion, etc.), it may rupture. At this time, the high-pressure hydrogen will be rapidly released to form a shock wave, leading to an explosion. The power of this explosion depends on the pressure and temperature of the hydrogen in the tank and the material and structure of the tank. In addition, during the use of existing hydrogen storage tanks, there is a possibility of direct pressure relief when the gas pressure is too high, which will cause the hydrogen to be exhausted quickly and increase the risk of explosion, because the rapid gas flow may generate static electricity or friction sparks, thereby causing an explosion. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides a temporary explosion-proof storage tank for hydrogen.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a temporary explosion-proof storage tank for hydrogen, comprising an outer shell, the upper end of which is fixedly connected to a first frame, both end surfaces of the outer shell are provided with an unfolding mechanism, both ends of the outer shell close to the unfolding mechanism are provided with a pressure relief mechanism, a dilution mechanism is provided on the surface of the outer shell, and one end of the outer shell is fixedly connected to a sealing cloth.

[0007] Preferably, a first circular hole is opened on the surface of the shell, one end of the shell is fixedly connected to a carbon fiber rubber, both sides of the carbon fiber rubber are fixedly connected to the shell, and a rubber tube is fixedly connected to the surface of the shell.

[0008] Preferably, an air core is fixedly connected to the upper end of the first frame.

[0009] Preferably, the unfolding mechanism includes a first movable frame, the surface of the first movable frame is fixedly connected to the outer shell, a hollow groove is provided inside the first movable frame, a second circular hole is provided on a side of the first movable frame close to the outer shell, and a third circular hole is provided on a side of the first movable frame away from the outer shell, one end of the first movable frame is rotatably connected to a rotating shaft, the rotating shaft passes through the carbon fiber rubber and is fixedly connected thereto, the surface of the rotating shaft is rotatably connected to the second movable frame, a torsion spring is provided on the outside of the rotating shaft, and the first movable frame and the second movable frame are elastically connected via the torsion spring.

[0010] Preferably, the pressure relief mechanism comprises a sliding block, the sliding block is slidably connected to the hollow groove in the first movable frame, and a pull rope is fixedly connected to the surface of the sliding block.

[0011] Preferably, the dilution mechanism comprises an arc block, a plurality of surfaces of the arc block are fixedly connected to the outer shell, both ends of the arc block are fixedly connected to the first movable frame, a spring is fixedly connected to the inner surface of the arc block, and one end of the spring is fixedly connected to the sliding block.

[0012] Beneficial effects of the present invention:

[0013] (1) The temporary explosion-proof storage tank for hydrogen described in the present invention adopts a plurality of arc blocks arranged on the outer surface of the shell to play a role of buffering and shock absorption. At the same time, a certain pressure of inert gas carbon dioxide can be filled inside the plurality of arc blocks. Since the arc blocks are arranged in a wavy shape on the surface of the shell, the arc blocks can also play an anti-slip role, avoiding the shell from sliding and colliding during transportation and causing damage, thereby indirectly improving the explosion-proof effect of the explosion-proof storage tank.

[0014] (2) The temporary explosion-proof storage tank for hydrogen described in the present invention connects multiple shells through carbon fiber rubber through a set structure, so that they can be folded, thereby improving their temporary nature and facilitating quick and easy carrying. The angles of the two shells are connected and sealed by a sealing cloth to form an enclosed space that can be unfolded when the multiple shells are unfolded. The sealing cloth and the angle between the two shells are used to release pressure and store hydrogen to avoid explosion caused by excessive hydrogen pressure inside the shells. In this way, the angle formed by the unfolding of the multiple shells can release the pressure of the internal hydrogen, and the sealing cloth can also be unfolded to store hydrogen. At the same time, the unfolding of the multiple shells can serve as a warning, warning that the internal pressure is too high and needs to be released in time. The larger the angle of the unfolding of the multiple shells, the greater the internal hydrogen pressure.

[0015] (3) The temporary explosion-proof storage tank for hydrogen described in the present invention has a structure that automatically releases pressure when the shell is unfolded to a certain angle and the hydrogen pressure in the sealing cloth is too high, and automatically releases the hydrogen in the shell into the outside air. When the sliding block moves away from the second circular hole, the hydrogen pressure inside the shell is sprayed out through the third circular hole and released into the outside air to avoid explosion. When the sliding block moves away from the first movable frame, the sliding block also moves away from the fit with the arc block. At this time, the inert gas carbon dioxide inside the arc block will spray out from the third circular hole. The carbon dioxide sprayed from the third circular hole will dilute the hydrogen sprayed from the third circular hole to avoid the risk of explosion caused by rapid discharge of hydrogen. This is because rapid gas flow may generate static electricity or friction sparks, thereby causing an explosion. Hydrogen is a flammable gas. When hydrogen is diluted by the inert gas carbon dioxide, it will not explode. When the flow rate of hydrogen sprayed from the third circular hole inside the shell is too high, as more hydrogen is sprayed, the internal pressure decreases, and the flow rate of hydrogen sprayed from the shell also decreases accordingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0018] Figure 2 Schematic diagram of carbon fiber rubber structure;

[0019] Figure 3 It is a schematic diagram of the shell structure;

[0020] Figure 4 is a schematic diagram of a first frame structure;

[0021] Figure 5 is a schematic diagram of the structure of the first movable frame;

[0022] Figure 6 It is a schematic diagram of the connection structure between the housing and the first movable frame;

[0023] Figure 7 for Figure 3 The enlarged structural diagram of part A is shown;

[0024] Figure 8 It is a schematic diagram of the connection structure between the carbon fiber rubber and the shell;

[0025] Fig. 9 It is a schematic diagram of the connection structure between the sliding block and the pull rope;

[0026] Fig.10 for Fig. 9 The enlarged structural diagram of part B is shown;

[0027] Fig.11It is a schematic diagram of the connection structure between the sliding block and the first movable frame;

[0028] Fig.12 Schematic diagram of the connection structure between the arc block and the spring.

[0029] In the figure: 100, shell; 1001, first circular hole; 101, carbon fiber rubber; 102, rubber tube; 200, first frame; 201, air core; 300, unfolding mechanism; 301, first movable frame; 3011, hollow groove; 3012, second circular hole; 3013, third circular hole; 302, rotating shaft; 303, second movable frame; 400, pressure relief mechanism; 401, sliding block; 402, pull rope; 500, dilution mechanism; 501, arc block; 502, spring; 600, sealing cloth. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figure 1-Figure 12 As shown, a temporary explosion-proof storage tank for hydrogen described in the present invention comprises a shell 100, the upper end of the shell 100 is fixedly connected to a first frame 200, the surfaces of both ends of the shell 100 are provided with unfolding mechanisms 300, the ends of the shell 100 close to the unfolding mechanisms 300 are provided with pressure relief mechanisms 400, the surface of the shell 100 is provided with a dilution mechanism 500, and one end of the shell 100 is fixedly connected with a sealing cloth 600; a plurality of shells 100 are connected by a carbon fiber rubber 101 through a set structure so that they can be folded, and the angle formed by unfolding the plurality of shells 100 can relieve the pressure of the internal hydrogen, and the sealing cloth 600 can also be unfolded to store hydrogen, and the unfolding of the plurality of shells 100 can play a warning role, and the larger the unfolding angle of the plurality of shells 100 represents the greater the internal hydrogen pressure, and the set structure is adopted when the shell 100 is unfolded to a certain angle and the hydrogen pressure in the sealing cloth 600 is too large, the pressure will be automatically relieved, and the hydrogen in the shell 100 will be automatically released into the outside air.

[0032] Preferably, a first circular hole 1001 is opened on the surface of the shell 100, a carbon fiber rubber 101 is fixedly connected to one end of the shell 100, both sides of the carbon fiber rubber 101 are fixedly connected to the shell 100, and a rubber tube 102 is fixedly connected to the surface of the shell 100.

[0033] Preferably, a gas core 201 is fixedly connected to the upper end of the first frame 200 ; hydrogen is introduced into the interior of the housing 100 through the gas core 201 , and the interior of the arc block 501 is filled with inert gas carbon dioxide.

[0034] Preferably, the unfolding mechanism 300 includes a first movable frame 301, the surface of the first movable frame 301 is fixedly connected to the shell 100, a hollow groove 3011 is provided inside the first movable frame 301, a second circular hole 3012 is provided on the side of the first movable frame 301 close to the shell 100, and a third circular hole 3013 is provided on the side of the first movable frame 301 away from the shell 100, one end of the first movable frame 301 is rotatably connected to a rotating shaft 302, the rotating shaft 302 passes through the carbon fiber rubber 101 and is fixedly connected thereto, the surface of the rotating shaft 302 is rotatably connected to a second movable frame 303, the outer surface of the rotating shaft 302 is sleeved with a torsion spring, and the first movable frame 301 and the second movable frame 303 are rotatably connected. The movable frame 303 is elastically connected by a torsion spring; the first movable frame 301 and the second movable frame 303 are fixedly connected to the side surfaces of the two shells 100, and the first movable frame 301 and the second movable frame 303 are elastically connected by a torsion spring, so that the two shells 100 can be tightly fitted together, and the angles of the two shells 100 are connected and sealed by a sealing cloth 600 to form an enclosed space that can be unfolded when multiple shells 100 are unfolded, and is used to relieve pressure and store hydrogen to avoid explosion caused by excessive hydrogen pressure inside the shell 100. The rubber tubes 102 on the surfaces of the two shells 100 will fit tightly together. When the hydrogen pressure inside the shell 100 reaches a certain pressure, the hydrogen inside the shell 100 will be vented. The outer shell 100 is connected to the first movable frame 301 and the second movable frame 303 by the rubber tube 102. The first movable frame 301 and the second movable frame 303 are connected to each other by the torsion spring. The two shells 100 are tightly fitted together, and the angles of the two shells 100 are connected and sealed by a sealing cloth 600 to form an enclosed space that can be unfolded when multiple shells 100 are unfolded. The sealing cloth 600 and the angle between the two shells 100 are used to release pressure and store hydrogen to prevent the hydrogen pressure inside the shell 100 from being too high and causing an explosion. In this way, the angle formed by the unfolding of the multiple shells 100 can release the internal hydrogen pressure, and the sealing cloth 600 can also be unfolded to store hydrogen. At the same time, the unfolding of the multiple shells 100 can serve as a warning, warning that the internal pressure is too high and needs to be released in time. The larger the unfolding angle of the multiple shells 100, the greater the internal hydrogen pressure.

[0035] Preferably, the pressure relief mechanism 400 includes a sliding block 401, the sliding block 401 is slidably connected to the hollow groove 3011 in the first movable frame 301, and a pull rope 402 is fixedly connected to the surface of the sliding block 401; when the two shells 100 are unfolded, the pull rope 402 will be stretched straight, and when the unfolding angle of the two shells 100 continues to increase, the pull rope 402 will pull the sliding block 401 to slide outward from the first movable frame 301, and the sliding block 401 sliding outward from the first movable frame 301 will stretch the spring 502, and the sliding block 401 sliding outward from the first movable frame 301 will move away from the second circular hole 301. 012, the third circular hole 3013, at this time, the hydrogen inside the shell 100 will be discharged through the first circular hole 1001, and the hydrogen discharged through the first circular hole 1001 will be discharged from the tank body through the second circular hole 3012 and the third circular hole 3013. At this time, the inert gas carbon dioxide inside the arc block 501 is also discharged from the tank body from the third circular hole 3013. The inert gas carbon dioxide can dilute the rapidly discharged hydrogen to further avoid the possibility of hydrogen explosion; the structure is set up so that when the shell 100 is unfolded to a certain angle, the hydrogen pressure in the sealing cloth 600 is too large, and the shell 100 will be automatically depressurized. 0 is automatically released into the outside air. When the angle between the multiple shells 100 is expanded to a certain angle, the pull rope 402 will be straightened. When the angle continues to increase, the pull rope 402 will pull the sliding block 401 away from the first movable frame 301. At this time, the sliding block 401 is away from the second circular hole 3012, and the hydrogen pressure inside the shell 100 will be ejected through the third circular hole 3013 and released into the outside air to avoid explosion. When the sliding block 401 is away from the first movable frame 301, the sliding block 401 will also be away from the fit of the arc block 501. At this time, the inertia inside the arc block 501 Gaseous carbon dioxide will be ejected from the third circular hole 3013, and the carbon dioxide ejected from the third circular hole 3013 will dilute the hydrogen ejected from the third circular hole 3013 to avoid the risk of explosion due to rapid discharge of hydrogen, because rapid gas flow may generate static electricity or friction sparks, thereby causing an explosion. Hydrogen is a flammable gas and will not explode when diluted by the inert gas carbon dioxide. The inside of the shell 100 is as if the flow rate of hydrogen ejected from the third circular hole 3013 is too high at the beginning. As more hydrogen is ejected, the internal pressure decreases, and the flow rate of hydrogen ejected from the inside of the shell 100 also decreases accordingly.

[0036] Preferably, the dilution mechanism 500 includes an arc block 501, a plurality of surfaces of the arc blocks 501 are fixedly connected to the housing 100, both ends of the arc blocks 501 are fixedly connected to the first movable frame 301, a spring 502 is fixedly connected to the inner surface of the arc block 501, and one end of the spring 502 is fixedly connected to the sliding block 401; a plurality of arc blocks 501 are arranged on the outer surface of the housing 100, the arc blocks 501 are arranged in a wavy shape on the surface of the housing and are hollow inside, the two ends of the arc blocks 501 are hard rubber, and the rest is soft rubber that can expand and contract, and the plurality of arc blocks 501 are arranged on the outer surface of the housing 100 to play a role in buffering and shock absorption, and at the same time, a certain pressure of inert gas carbon dioxide can be filled in the plurality of arc blocks 501, and since the arc blocks 501 are arranged in a wavy shape on the surface of the housing, the arc blocks 501 can also play an anti-slip role, avoiding the housing 100 from sliding and colliding during transportation and causing damage, thereby indirectly improving the explosion-proof effect of the explosion-proof storage tank.

[0037] Working principle: When in use, the present invention first passes hydrogen into the interior of the outer shell 100 through the gas core 201, and fills the interior of the arc block 501 with inert gas carbon dioxide. Multiple arc blocks 501 are arranged on the outer surface of the outer shell 100. The arc blocks 501 are arranged in a wavy shape on the outer shell surface and are hollow inside. The two ends of the arc blocks 501 are hard rubber, and the rest is soft rubber that can expand and contract. Multiple arc blocks 501 are arranged on the outer surface of the outer shell 100 to play a role in buffering and shock absorption. At the same time, a certain pressure of inert gas carbon dioxide can be filled inside the multiple arc blocks 501. Since the arc blocks 501 are arranged in a wavy shape on the outer shell surface, the arc blocks 501 can also play an anti-slip role, avoiding damage caused by sliding and collision during transportation of the outer shell 100, thereby indirectly improving the explosion-proof effect of the explosion-proof storage tank.

[0038] The side surfaces of the two shells 100 are fixedly connected with a first movable frame 301 and a second movable frame 303. The first movable frame 301 and the second movable frame 303 are elastically connected by a torsion spring, so that the two shells 100 can be tightly fitted together. The angles of the two shells 100 are connected and sealed by a sealing cloth 600 to form a closed space that can be unfolded when multiple shells 100 are unfolded to relieve pressure and store hydrogen to prevent the explosion caused by excessive hydrogen pressure inside the shell 100. The rubber tubes 102 on the surfaces of the two shells 100 will fit tightly together. When the hydrogen pressure inside the shell 100 reaches a certain pressure, the hydrogen inside it will flow out from the rubber tube 102 into the angle between the sealing cloth 600 and the two shells 100. At this time, the shell 100 will be unfolded. The unfolding of the two fitted shells 100 will drive the rubber tubes 102 on their surfaces away, so that the hydrogen inside the shell 100 will be discharged from the rubber tube 102 into the space between the sealing cloth 600 and the shell 100. By setting the structure The multiple shells 100 are connected by carbon fiber rubber 101 so that they can be folded, which improves their temporary nature and facilitates quick carrying. The side surfaces of the two shells 100 are fixedly connected with the first movable frame 301 and the second movable frame 303. The first movable frame 301 and the second movable frame 303 are elastically connected by a torsion spring, so that the two shells 100 can be tightly fitted together. The angles of the two shells 100 are connected and sealed by a sealing cloth 600 to form an enclosed space that can be unfolded when the multiple shells 100 are unfolded. The angle between the sealing cloth 600 and the two shells 100 is used to release pressure and store hydrogen to avoid explosion caused by excessive hydrogen pressure inside the shell 100. In this way, the angle formed by the unfolding of the multiple shells 100 can release pressure on the internal hydrogen, and the sealing cloth 600 can also be unfolded to store hydrogen. At the same time, the unfolding of the multiple shells 100 can serve as a warning, warning that the internal pressure is too high and needs to be released in time. The larger the angle of the unfolding of the multiple shells 100, the greater the internal hydrogen pressure.

[0039] When the two shells 100 are unfolded, the pull rope 402 will be stretched straight. When the unfolding angle of the two shells 100 continues to increase, the pull rope 402 will pull the sliding block 401 to slide outward from the first movable frame 301. The sliding of the sliding block 401 outward from the first movable frame 301 will stretch the spring 502. The sliding of the sliding block 401 outward from the first movable frame 301 will move away from the second circular hole 3012 and the third circular hole 3013. At this time, the hydrogen inside the shell 100 will be discharged through the first circular hole 1001. The hydrogen discharged through the first circular hole 1001 will The inert gas carbon dioxide in the arc block 501 is also discharged from the tank body through the second circular hole 3012 and the third circular hole 3013. The inert gas carbon dioxide can dilute the rapidly discharged hydrogen to further avoid the possibility of hydrogen explosion. The structure is set up so that when the shell 100 is unfolded to a certain angle and the hydrogen pressure in the sealing cloth 600 is too large, the pressure will be automatically relieved, and the hydrogen in the shell 100 will be automatically released into the outside air. The angles between the multiple shells 100 are unfolded to a certain angle. When the angle continues to increase, the pull rope 402 will pull the sliding block 401 away from the first movable frame 301. At this time, the sliding block 401 is away from the second circular hole 3012, and the hydrogen pressure inside the housing 100 will be ejected through the third circular hole 3013 to release into the external air to avoid explosion. When the sliding block 401 is away from the first movable frame 301, the sliding block 401 will also be away from the fit of the arc block 501. At this time, the inert gas carbon dioxide inside the arc block 501 will be ejected from the third circular hole 3013. The carbon dioxide sprayed from the third circular hole 3013 will dilute the hydrogen sprayed from the third circular hole 3013, avoiding the risk of explosion due to rapid discharge of hydrogen, because rapid gas flow may generate static electricity or friction sparks, thereby causing an explosion. Hydrogen is a flammable gas, and it will not explode when diluted by the inert gas carbon dioxide. The flow rate of hydrogen sprayed from the third circular hole 3013 inside the shell 100 is too high at the beginning. As more hydrogen is sprayed, the internal pressure decreases, and the flow rate of hydrogen sprayed from the shell 100 also decreases accordingly.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A temporary explosion-proof storage tank for hydrogen, comprising a housing (100), characterized in that: The upper end of the shell (100) is fixedly connected to a first frame (200), the surfaces of both ends of the shell (100) are provided with unfolding mechanisms (300), one end of the two ends of the shell (100) close to the unfolding mechanism (300) is provided with a pressure relief mechanism (400), the surface of the shell (100) is provided with a dilution mechanism (500), and one end of the shell (100) is fixedly connected to a sealing cloth (600).

2. A temporary explosion-proof storage tank for hydrogen according to claim 1, characterized in that: A first circular hole (1001) is opened on the surface of the shell (100); one end of the shell (100) is fixedly connected to a carbon fiber rubber (101); both sides of the carbon fiber rubber (101) are fixedly connected to the shell (100); and a rubber tube (102) is fixedly connected to the surface of the shell (100).

3. A temporary explosion-proof storage tank for hydrogen according to claim 1, characterized in that: An air core (201) is fixedly connected to the upper end of the first frame (200).

4. A temporary explosion-proof storage tank for hydrogen according to claim 1, characterized in that: The unfolding mechanism (300) comprises a first movable frame (301), the surface of the first movable frame (301) is fixedly connected to the outer shell (100), a hollow groove (3011) is provided inside the first movable frame (301), a second circular hole (3012) is provided on a side of the first movable frame (301) close to the outer shell (100), and a third circular hole (3013) is provided on a side of the first movable frame (301) away from the outer shell (100), one end of the first movable frame (301) is rotatably connected to a rotating shaft (302), the rotating shaft (302) penetrates the carbon fiber rubber (101) and is fixedly connected thereto, the surface of the rotating shaft (302) is rotatably connected to a second movable frame (303), a torsion spring is sleeved on the outside of the rotating shaft (302), and the first movable frame (301) and the second movable frame (303) are elastically connected via the torsion spring.

5. A temporary explosion-proof storage tank for hydrogen according to claim 4, characterized in that: The pressure relief mechanism (400) comprises a sliding block (401), the sliding block (401) is slidably connected to a hollow groove (3011) in the first movable frame (301), and a pull rope (402) is fixedly connected to the surface of the sliding block (401).

6. A temporary explosion-proof storage tank for hydrogen according to claim 1, characterized in that: The dilution mechanism (500) comprises an arc block (501), a plurality of surfaces of the arc block (501) are fixedly connected to the housing (100), two ends of the arc block (501) are fixedly connected to the first movable frame (301), a spring (502) is fixedly connected to the inner surface of the arc block (501), and one end of the spring (502) is fixedly connected to the sliding block (401).

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