Safety pressure relief device for water electrolyser

Abstract

The utility model relates to the technical field of water electrolysers, in particular to a safety pressure relief device for a water electrolyser, which comprises a base, the base is welded at an automatic pressure relief position, the top of the base is in threaded connection with a shell, the top of the shell is in threaded connection with a top cover, a sealing ring is fixedly connected in the base, and a compression spring is elastically connected in the shell. The bottom of the compression spring is fixedly connected with a pressure relief ejector pin, the pressure relief ejector pin is arranged at the top of the sealing ring, a plurality of through holes are formed in the outer portion of the shell, the through holes are distributed in the shell at equal angles, and the radiuses of the through holes are the same. Through cooperative use of the base, the shell, the top cover, the pressure relief ejector pin, the compression spring and the sealing ring, the device can automatically relieve pressure in a mechanical mode when pressure suddenly increases in a pipeline and equipment, and can automatically reset after pressure relief to ensure that the whole system is still in a sealed state and can be immediately put into normal work; and the equipment can be quickly recovered to be normal even if the equipment is subjected to tempering.

Description

Technical Field

[0001] The utility model relates to the technical field of water electrolysis tanks, in particular to a safety pressure relief device for water electrolysis tanks. Background Art

[0002] At present, hydrogen-oxygen generators mainly provide stable hydrogen-oxygen mixture for flame cutting on continuous casting in steel plants. If used improperly, flashback will occur, causing combustion and implosion of the hydrogen-oxygen mixture in the pipeline. Although there are several anti-flashback devices when the equipment is running, it cannot effectively relieve pressure when implosion occurs. Once the equipment flashes back, it will become unusable. Therefore, we proposed a safety pressure relief device for water electrolyzers. Utility Model Content

[0003] The utility model aims to provide a safety pressure relief device for a water electrolyzer, so as to solve the problem in the above background technology that flashback may occur in case of improper use, causing combustion and implosion of hydrogen-oxygen mixture in the pipeline, and although there are several anti-flashback devices when the equipment is running, the pressure cannot be effectively relieved when implosion occurs, and the equipment will become unusable once it flashes back.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A safety pressure relief device for a water electrolyzer comprises a base, wherein the base is welded and installed in an automatic pressure relief position, the top of the base is threadedly connected to a shell, the top of the shell is threadedly connected to a top cover, a sealing ring is fixedly connected inside the base, a compression spring is elastically connected inside the shell, a pressure relief ejector pin is fixedly connected to the bottom of the compression spring, and the pressure relief ejector pin is arranged on the top of the sealing ring.

[0006] As a preferred solution of the utility model, a plurality of through holes are opened on the outside of the shell, the plurality of through holes are evenly distributed at angles in the shell, and the radii of the plurality of through holes are the same.

[0007] As a preferred solution of the utility model, the top cover is cylindrical in shape, and the top cover is opposite to the outer shell.

[0008] As a preferred solution of the utility model, the pressure relief ejector pin is arranged at the bottom center of the compression spring, and the shape of the pressure relief ejector pin is circular.

[0009] As a preferred solution of the utility model, the base is made of stainless steel, the base is cylindrical, and the sealing ring is arranged at the center of the base.

[0010] As a preferred solution of the utility model, the cross-sectional areas of the shell and the base are the same, and the shape of the shell is cylindrical.

[0011] As a preferred solution of the utility model, the compression spring is arranged at the center of the housing, and the compression spring is opposite to the pressure relief ejector pin.

[0012] As a preferred solution of the utility model, the material of the sealing ring is rubber, and the inner diameter of the sealing ring is opposite to the position of the pressure relief ejector pin.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, by setting a base, a shell, a top cover, a pressure relief ejector pin, a compression spring and a sealing ring for coordinated use, the device can automatically release pressure mechanically when a sudden pressure increase occurs in the pipeline or the equipment. After the pressure relief is completed, it can automatically reset to ensure that the entire system is still in a sealed state, and can immediately continue to work normally, ensuring that the equipment can quickly return to normal even if it encounters a backfire.

[0015] 2. In the utility model, by setting the outer shell and the top cover for coordinated use, since the outer shell and the top cover are connected by threads, the top cover can be easily disassembled, making the entire pressure relief device more practical and convenient in use, and more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the normal assembly structure of the pressure relief device of the utility model;

[0018] Figure 3 This is a schematic diagram of the pressure relief structure of the pressure relief device of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the pressure relief ejector pin and the shell of the utility model.

[0020] In the figure: 1. base; 2. outer shell; 3. top cover; 4. pressure relief ejector pin; 5. compression spring; 6. sealing ring; 7. through hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] For examples, see Figure 1-4 , the utility model provides a technical solution:

[0023] A safety pressure relief device for a water electrolyzer comprises a base 1, which is welded and installed in an automatic pressure relief position, the top of the base 1 is threadedly connected to a shell 2, the top of the shell 2 is threadedly connected to a top cover 3, a sealing ring 6 is fixedly connected inside the base 1, a compression spring 5 is elastically connected inside the shell 2, a pressure relief ejector pin 4 is fixedly connected to the bottom of the compression spring 5, the pressure in the gas supply system is about 0.04-0.09MPa in a non-pressure relief state, the compression spring 5 in the pressure relief device presses the sealing ring 6 in the base 1 downward against the pressure relief ejector pin 4, the sealing performance is good at this time, the gas in the gas supply system can only enter the empty space at the lower end of the pressure relief ejector pin 4, and the pressure relief ejector pin 4 is arranged on the top of the sealing ring 6.

[0024] In this embodiment, Figure 2 and Figure 3 As shown, a plurality of through holes 7 are provided on the outside of the shell 2, and the plurality of through holes 7 are evenly distributed in the shell 2, and the radii of the plurality of through holes 7 are the same. The top cover 3 is cylindrical in shape, and the top cover 3 is opposite to the shell 2. The pressure relief ejector pin 4 is arranged at the bottom center of the compression spring 5, and the shape of the pressure relief ejector pin 4 is circular.

[0025] Among them, by setting up the base 1, the shell 2, the top cover 3, the pressure relief pin 4, the compression spring 5 and the sealing ring 6, the device can automatically release the pressure mechanically when a sudden pressure increase occurs in the pipeline or the equipment. After the pressure relief is completed, it can automatically reset to ensure that the entire system is still in a sealed state, and can immediately continue to work normally, ensuring that the equipment can quickly return to normal even if it encounters a backfire.

[0026] In this embodiment, Figure 1 and Figure 4 As shown, the base 1 is made of stainless steel and is cylindrical in shape. The sealing ring 6 is arranged at the center of the base 1. The cross-sectional areas of the outer shell 2 and the base 1 are the same and the shape of the outer shell 2 is cylindrical. When a sudden pressure surge occurs in the air supply system (exceeding 0.12MPa), the pressure is greater than the downward elastic force of the compression spring 5, and the pressure relief pin 4 is pushed open by the high pressure of the air supply system. The pressure in the system enters the pressure relief device through the hole in the pressure relief pin 4, and is then released to the external environment through the hole in the outer shell 2. After the pressure relief is completed, the pressure in the system returns to normal. When the pressure of the compression spring 5 is greater than the pressure in the system, the pressure relief pin 4 is pressed downward on the sealing ring 6 by the compression spring 5 to complete the sealing of the system, and the air supply system returns to normal use. The compression spring 5 is arranged at the center of the outer shell 2, and the compression spring 5 is opposite to the pressure relief pin 4. The sealing ring 6 is made of rubber, and the inner diameter of the sealing ring 6 is opposite to the pressure relief pin 4.

[0027] Among them, by setting the outer shell 2 and the top cover 3 for coordinated use, since the outer shell 2 and the top cover 3 are connected by threads, the top cover 3 can be easily disassembled, making the entire pressure relief device more practical and convenient when in use, and more convenient to operate.

[0028] Working process of the utility model: when the safety pressure relief device for water electrolyzer designed by the present scheme is in operation, the pressure in the gas supply system is about 0.04-0.09MPa in the non-pressure relief state, and the compression spring 5 in the pressure relief device presses the pressure relief ejector pin 4 downward to tightly press the sealing ring 6 in the base 1. At this time, the sealing is good, and the gas in the gas supply system can only enter the empty space at the lower end of the pressure relief ejector pin 4. At this time, the pressure is normal and cannot push open the pressure relief ejector pin 4. When the pressure in the gas supply system increases sharply (exceeds 0.12MPa), the pressure is greater than the downward elastic force of the compression spring 5, and the pressure relief ejector pin 4 is pushed open by the high pressure of the gas supply system. The pressure in the system enters the pressure relief device through the hole on the pressure relief ejector pin 4, and is then released to the external environment through the hole on the shell 2. After the pressure relief is completed, the pressure in the system returns to normal. When the pressure of the compression spring 5 is greater than the pressure in the system, the pressure relief ejector pin 4 is pressed downward by the compression spring 5 on the sealing ring 6 to complete the sealing of the system, and the gas supply system returns to normal use.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety pressure relief device for a water electrolyzer, comprising a base (1), characterized in that: The base (1) is welded and installed at an automatic pressure relief position; the top of the base (1) is threadedly connected to the outer shell (2); the top of the outer shell (2) is threadedly connected to the top cover (3); a sealing ring (6) is fixedly connected inside the base (1); a compression spring (5) is elastically connected inside the outer shell (2); the bottom of the compression spring (5) is fixedly connected to a pressure relief ejector pin (4); and the pressure relief ejector pin (4) is arranged on the top of the sealing ring (6).

2. A safety pressure relief device for a water electrolyzer according to claim 1, characterized in that: A plurality of through holes (7) are provided on the outside of the shell (2); the plurality of through holes (7) are evenly distributed at angles inside the shell (2); and the radii of the plurality of through holes (7) are all the same.

3. A safety pressure relief device for a water electrolyzer according to claim 1, characterized in that: The top cover (3) is cylindrical in shape, and the top cover (3) is located opposite to the outer shell (2).

4. A safety pressure relief device for a water electrolyzer according to claim 1, characterized in that: The pressure relief ejector pin (4) is arranged at the bottom center of the compression spring (5), and the shape of the pressure relief ejector pin (4) is circular.

5. A safety pressure relief device for a water electrolyzer according to claim 1, characterized in that: The base (1) is made of stainless steel and is cylindrical in shape. The sealing ring (6) is arranged at the center of the base (1).

6. A safety pressure relief device for a water electrolyzer according to claim 1, characterized in that: The cross-sectional areas of the shell (2) and the base (1) are the same, and the shell (2) is cylindrical in shape.

7. A safety pressure relief device for a water electrolyzer according to claim 1, characterized in that: The compression spring (5) is arranged at the center of the housing (2), and the compression spring (5) is located opposite to the pressure relief ejector pin (4).

8. A safety pressure relief device for a water electrolyzer according to claim 1, characterized in that: The sealing ring (6) is made of rubber, and the inner diameter of the sealing ring (6) is opposite to the pressure relief ejector pin (4).

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