End reducing sealing structure for large-diameter fiber winding pipe of hydrogen storage tank

Abstract

The utility model relates to the field of hydrogen storage tanks, in particular to an end reducing sealing structure for a large-diameter fiber winding pipe of a hydrogen storage tank. According to the end reducing sealing structure for the large-diameter fiber winding pipe of the hydrogen storage tank, hydrogen can be sealed and stored, the conical end is conical, the pressure contact area is large, leakage is prevented, and waste is reduced. An end reducing sealing structure for a large-diameter fiber winding pipe of a hydrogen storage tank comprises a shell, conical ends, bases and the like, the conical ends are connected to the left side and the right side of the shell, and the bases are connected to the lower sides of the left side and the right side of the shell. According to the hydrogen storage device, the sealing valve is rotated to be opened, so that hydrogen enters the conical end heads, the shell and the inner cavity to be stored, the sealing head is used for sealing, the sealing valve is rotated to be closed after enough hydrogen is filled, and the conical end heads are all conical, so that the hydrogen can be sealed and stored; and the stress at the end socket is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen storage tanks, and in particular to an end-diameter reduction sealing structure for large-diameter fiber-wound tubes in hydrogen storage tanks. Background Technology

[0002] Against the backdrop of the accelerated transformation of the global energy structure, hydrogen energy, as a clean, efficient, and renewable energy carrier, is receiving increasing attention and importance. Hydrogen energy has shown great application potential in many fields such as transportation, power storage, and distributed generation. As a key piece of equipment for hydrogen storage and transportation, the performance and safety of hydrogen storage tanks are directly related to the healthy development of the hydrogen energy industry.

[0003] Current hydrogen storage methods typically involve filling hydrogen into a storage tank and then sealing it for storage. However, the current storage tanks are subjected to high pressure at both ends. Because the ends are usually circular with a small diameter, the pressure contact area is relatively small, resulting in uneven stress distribution, which increases the risk of leakage, leads to hydrogen waste, and may even pose safety hazards.

[0004] Therefore, it is necessary to design a diameter-reducing sealing structure for the end of the large-diameter fiber-wound tube of hydrogen storage tank that can seal and store hydrogen with conical ends, large pressure contact area, prevent leakage, and reduce waste. Utility Model Content

[0005] To overcome the shortcomings of current hydrogen storage tanks, which are subjected to high pressure at both ends and have relatively small pressure contact area due to the circular structure and small diameter of the ends, resulting in uneven stress distribution, increased risk of leakage, hydrogen waste, and even safety hazards, this utility model provides a diameter-reducing sealing structure for the ends of large-diameter fiber-wound tubes in hydrogen storage tanks. This structure can seal and store hydrogen with conical ends that are all conical, have a large pressure contact area, prevent leakage, and reduce waste.

[0006] The end-diameter reduction sealing structure for large-diameter fiber-wound tubes in hydrogen storage tanks includes an outer shell, tapered ends, bases, connecting flanges, screws, fixing nuts, sealing valves, explosion-proof valves, sealing heads, sealing caps, and an inner cavity. The connecting flanges on both sides of the outer shell are detachably connected to sealing caps via screws and fixing nuts. Tapered ends are connected to the inner sides of the connecting flanges. Bases are connected to the lower sides of both sides of the outer shell, and these bases are connected to the connecting flanges. An explosion-proof valve is connected to the right side of the sealing cap, and a sealing valve is detachably connected to the right side of the explosion-proof valve. Sealing heads are connected to the inner sides of the tapered ends, and an inner cavity connects the tapered ends.

[0007] To further clarify, the outer shell is made of fiberglass composite material or steel.

[0008] To further clarify, all bases are H-shaped.

[0009] To further clarify, all the fixing nuts are hexagonal.

[0010] To further explain, it also includes temperature sensors, with temperature sensors connected to both the front and rear of the sealing head.

[0011] To further explain, it also includes steel wires, with steel wires connecting the outer shell and the inner cavity.

[0012] The present invention has the following advantages: 1. The present invention opens by rotating the sealing valve, allowing hydrogen to enter the conical end, outer shell and inner cavity for storage. It is sealed by the sealing head. After filling with enough hydrogen, the sealing valve is closed by rotating it. The conical end is conical, which can seal and store hydrogen. The conical end is conical, which reduces the stress at the sealing head.

[0013] 2. When the internal pressure of the outer shell reaches the set threshold, the explosion-proof valve will respond quickly and open, allowing the medium to be discharged rapidly, reducing the internal pressure and achieving pressure relief. This enables automatic pressure relief when the pressure is high, preventing rupture or explosion and improving the safety of use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the sealing valve and other components of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the sealing cap and steel wire components of this utility model.

[0017] Figure 4 This is a three-dimensional cross-sectional view of the outer shell and inner cavity of this utility model.

[0018] Figure 5 This is a three-dimensional cross-sectional view of the sealing valve and sealing head components of this utility model.

[0019] The component names and serial numbers in the diagram are as follows: 1_Outer shell, 2_Conical end, 3_Base, 4_Connecting flange, 5_Screw, 6_Fixing nut, 7_Sealing valve, 8_Temperature sensor, 9_Explosion-proof valve, 10_Sealing head, 11_Sealing cover, 12_Steel wire, 13_Inner cavity. Detailed Implementation

[0020] The preferred technical solution of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] End-diameter reduction sealing structure for large-diameter fiber-wound tubes in hydrogen storage tanks, such as Figures 1-5As shown, the structure includes an outer shell 1, a conical end 2, a base 3, a connecting flange 4, a screw 5, a fixing nut 6, a sealing valve 7, an explosion-proof valve 9, a sealing head 10, a sealing cover 11, and an inner cavity 13. The outer shell 1 is made of fiberglass composite material or steel. The sealing cover 11 is detachably connected to the connecting flange 4 on both the left and right sides of the outer shell 1 via the screw 5 and the fixing nut 6. The fixing nuts 6 are all hexagonal. The conical end 2 is connected to the inner side of the connecting flange 4. The base 3 is connected to the lower side of both the left and right sides of the outer shell 1. The base 3 is connected to the connecting flange 4. The base 3 is H-shaped for easy support. The explosion-proof valve 9 is connected to the right side of the sealing cover 11. The sealing valve 7 is detachably connected to the right side of the explosion-proof valve 9. The sealing head 10 is connected to the inner side of the conical end 2. Temperature sensors 8 are connected to the front and rear of the sealing head 10 for temperature detection. The inner cavity 13 is connected between the conical ends 2. A steel wire 12 is connected between the outer shell 1 and the inner cavity 13 to enhance the structural strength.

[0022] When hydrogen storage tanks are needed for sealed storage of hydrogen, this device can be used. The base 3 is in contact with the ground. The base 3 is H-shaped for easy support. Then, the sealing cover 11 is in contact with the connecting flange 4 on the outer shell 1, so that the temperature sensor 8 is in contact with the sealing cover 11. The sealing cover 11 is then fixed by the screw 5 and the fixing nut 6. The fixing nut 6 is hexagonal. Then, the sealing valve 7 is connected to the hydrogen delivery pipeline. The sealing valve 7 is then turned to open, so that the hydrogen enters the conical end 2, the outer shell 1 and the inner cavity 13 for storage. The inner cavity 13 has a structure with tapered ends. The outer shell 1 is made of fiberglass composite material or steel. The temperature inside the outer shell 1 is detected by the temperature sensor 8. The structural strength is increased by the steel wire 12. The sealing is achieved by the sealing head 10.

[0023] When the internal pressure of the outer casing 1 reaches the set threshold, the explosion-proof valve 9 will respond quickly and open, allowing the medium to be discharged rapidly, reducing the internal pressure and achieving pressure relief. This enables automatic pressure relief when the pressure is high, preventing rupture or explosion and improving the safety of use. After sufficient hydrogen is filled in, the sealing valve 7 is turned to close, thereby sealing and storing the hydrogen. The conical ends 2 are all conical, which enables the sealing and storage of hydrogen. The conical ends 2 are all conical or ellipsoidal, reducing the stress at the end cap.

[0024] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A diameter reduction sealing structure for the end of a large-diameter fiber-wound tube used in a hydrogen storage tank, characterized in that: It includes an outer shell (1), a conical end (2), a base (3), a connecting flange (4), a screw (5), a fixing nut (6), a sealing valve (7), an explosion-proof valve (9), a sealing head (10), a sealing cover (11), and an inner cavity (13). The connecting flanges (4) on both sides of the outer shell (1) are detachably connected to the sealing cover (11) by the screw (5) and the fixing nut (6). The inner side of the connecting flange (4) is connected to the conical end (2). The lower sides of both the left and right sides of the outer shell (1) are connected to the base (3). The base (3) is connected to the connecting flange (4). The right side of the sealing cover (11) is connected to the explosion-proof valve (9). The right side of the explosion-proof valve (9) is detachably connected to the sealing valve (7). The inner side of the conical end (2) is connected to the sealing head (10). The inner cavity (13) is connected between the conical ends (2).

2. The end-diameter reduction sealing structure for large-diameter fiber-wound tubes in hydrogen storage tanks according to claim 1, characterized in that: The inner cavity (13) has a tapered structure at both ends, and the outer shell (1) is made of glass fiber composite material or steel.

3. The end-diameter reduction sealing structure for large-diameter fiber-wound tubes in hydrogen storage tanks according to claim 1, characterized in that: The bases (3) are all H-shaped.

4. The end-diameter reduction sealing structure for large-diameter fiber-wound tubes in hydrogen storage tanks according to claim 1, characterized in that: All the fixing nuts (6) are hexagonal.

5. The end-diameter reduction sealing structure for large-diameter fiber-wound tubes in hydrogen storage tanks according to claim 1, characterized in that: It also includes a temperature sensor (8), and the sealing head (10) has temperature sensors (8) connected to both the front and rear.

6. The end-diameter reduction sealing structure for large-diameter fiber-wound tubes in hydrogen storage tanks according to claim 1, characterized in that: It also includes a steel wire (12), and the outer shell (1) and the inner cavity (13) are connected by a steel wire (12).

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