Explosion-proof pressure relief device
By designing the explosion-proof pressure relief device of the fire cover shell and pressure relief valve, the ventilation runner structure of the gap and edge through holes is used to prevent the flame from passing through, and filter gas particles through the filter, the safety problem of flame erupting in the prior art is solved, and efficient pressure relief and safety improvement is achieved.
Patent Information
- Application Number
- CN202421233339.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The existing explosion-proof pressure relief device cannot effectively prevent the flame from jumping out during the pressure relief process, resulting in the possible ignition of external combustible substances, which is insufficient safety.
An explosion-proof pressure relief device is designed, including a fire cover shell, a pressure relief valve, a front gasket, an intermediate gasket and a rear gasket. By setting gaps and edge through holes between the gaskets, a narrow ventilation runner is formed to prevent flames from passing, and the pressure relief is opened at the pressure relief valve to ensure that there is no flame gas leaking out.
It effectively prevents the flames inside the explosion-proof chamber from jumping out during the pressure relief process, avoids igniting the outside combustible gases, greatly improves the overall safety, and filters gas particles through the filter to ensure the stability and reliability of the pressure relief.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of explosion-proof, in particular to an explosion-proof pressure relief device. Background Art
[0002] In working conditions with explosion-proof requirements, such as coal mines, metal mines, chemical sites, etc., there are a large number of combustible substances in the environment, such as gas and coal, which puts higher requirements on the power equipment used in the above environment. In order to meet the corresponding explosion-proof requirements, it is necessary to set up a flameproof cavity for flammable and explosive devices. For example, lithium-ion batteries are placed in an independent flameproof cavity, and corresponding pressure relief devices need to be installed on the flameproof cavity. When the internal devices of the flameproof cavity explode, flames will be generated. If a transmission pressure relief device is used, the flame will be ejected with the gas during the pressure relief process, igniting the combustible materials in the environment, which is not safe. Summary of the invention
[0003] The purpose of the utility model is to provide an explosion-proof pressure relief device, which can prevent flames from jumping out during the pressure relief process on the basis of achieving pressure relief, avoid igniting external combustible materials, and greatly improve the overall safety.
[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an explosion-proof pressure relief device, comprising: a fireproof cover shell, a pressure relief valve arranged at one end of the fireproof cover shell, and a front gasket, a middle gasket and a rear gasket arranged in sequence at the other end of the fireproof cover shell, and the peripheries of the front gasket and the rear gasket are respectively sealed and connected with the inner wall of the fireproof cover shell;
[0005] A central through hole is formed at the center of each of the front gasket and the rear gasket, a first gap is formed between the front gasket and the middle gasket, a second gap is formed between the middle gasket and the rear gasket, at least two first gasket blocks located in the first gap are arranged between the front gasket and the middle gasket, at least two second gasket blocks located in the second gap are arranged between the middle gasket and the rear gasket, and a plurality of edge through holes are arranged at intervals along the circumferential direction on the edge area of the middle gasket in contact with the fireproof cover shell.
[0006] The further improved scheme in the above technical scheme is as follows:
[0007] 1. In the above solution, the edge through hole is located at the edge of the middle gasket.
[0008] 2. In the above solution, a filter screen is provided at the other end of the fireproof cover shell, and the filter screen is located on the side opposite to the front gasket and the middle gasket.
[0009] 3. In the above solution, the gap width of the first gap is the same as that of the second gap.
[0010] 4. In the above solution, the number of the first pads is 4, which are evenly distributed around the central through hole.
[0011] 5. In the above solution, the number of the second pads is 4, which are evenly distributed around the central through hole.
[0012] 6. In the above solution, the first gasket is integrally arranged with the front gasket or the middle gasket.
[0013] 7. In the above solution, the second gasket is integrally arranged with the rear gasket or the middle gasket.
[0014] 8. In the above solution, the first cushion block and the second cushion block are circular cushion blocks.
[0015] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:
[0016] 1. The utility model explosion-proof pressure relief device has a front gasket and a rear gasket, each of which has a central through hole at its center, a first gap between the front gasket and the middle gasket, a second gap between the middle gasket and the rear gasket, and a plurality of edge through holes are arranged at intervals along the circumferential direction on the edge area where the middle gasket contacts the fireproof cover shell. After the high-temperature and high-pressure gas with flame in the explosion-proof cavity enters the fireproof cover shell, it passes through the central through hole of the front gasket and passes through the first gap, the edge through hole and the second gap in sequence. The narrow and small ventilation flow channel formed by the first gap, the edge through hole and the second gap can block the flame from passing through, and then flows out through the central through hole of the rear gasket and is opened by the push-top pressure relief valve to release the flameless high-pressure gas. On the basis of achieving pressure relief, it can prevent the flame inside the explosion-proof cavity from jumping out during the pressure relief process to avoid igniting external combustible materials, thereby greatly improving the overall safety.
[0017] 2. The explosion-proof pressure relief device of the utility model has a filter screen arranged at the other end of the fireproof cover shell. The filter screen is located on the side opposite to the front gasket and the middle gasket, which is beneficial for filtering out larger particles in the airflow generated by the explosion, thereby avoiding entering the gaps between the front gasket, the middle gasket and the rear gasket and the edge through holes, thereby greatly reducing the probability of blockage, ensuring the stability of the pressure relief, and improving the reliability of the use of the pressure relief device. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Attached Figure 1 This is a schematic diagram of the overall structure of the explosion-proof pressure relief device of the utility model;
[0019] Attached Figure 2 It is a partial structural sectional stereogram of the explosion-proof pressure relief device of the utility model;
[0020] Attached Figure 3 It is a partial structural exploded schematic diagram of the explosion-proof pressure relief device of the utility model;
[0021] Attached Figure 4 It is a partial structural sectional front view of the explosion-proof pressure relief device of the utility model.
[0022] In the above figures: 1, fireproof cover shell; 2, pressure relief valve; 3, front gasket; 4, middle gasket; 5, rear gasket; 6, center through hole; 7, first gap; 8, second gap; 9, first pad; 10, second pad; 12, edge through hole; 13, filter. DETAILED DESCRIPTION
[0023] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.
[0024] Embodiment 1: An explosion-proof pressure relief device, comprising: a fireproof housing 1, a pressure relief valve 2 disposed at one end of the fireproof housing 1, a front gasket 3, a middle gasket 4 and a rear gasket 5 disposed in sequence at the other end of the fireproof housing 1, and the peripheries of the front gasket 3 and the rear gasket 5 are sealed and connected to the inner wall of the fireproof housing 1;
[0025] After the high-temperature, high-pressure gas with flames in the explosion-proof cavity enters the fireproof cover shell, it passes through the central through hole of the front gasket and passes through the first gap, the edge through hole, and the second gap in sequence. The narrow and small ventilation flow channel formed by the first gap, the edge through hole, and the second gap can block the flame from passing through, and then flows out through the central through hole of the rear gasket and opens through the push-top pressure relief valve to release the flameless high-pressure gas;
[0026] A central through hole 6 is formed at the center of each of the front gasket 3 and the rear gasket 5. A first gap 7 is formed between the front gasket 3 and the middle gasket 4. A second gap 8 is formed between the middle gasket 4 and the rear gasket 5. At least two first gasket blocks 9 located in the first gap 7 are arranged between the front gasket 3 and the middle gasket 4. At least two second gasket blocks 10 located in the second gap 8 are arranged between the middle gasket 4 and the rear gasket 5. A plurality of edge through holes 12 are arranged at intervals along the circumferential direction at the edge area where the middle gasket 4 contacts the fireproof cover shell 1.
[0027] On the basis of achieving pressure relief, it can prevent the flame inside the explosion-proof cavity from jumping out during the pressure relief process, avoid igniting external flammable gases, and greatly improve the overall safety.
[0028] The edge through hole 12 is located at the edge of the middle gasket 4 .
[0029] A filter screen 13 is provided at the other end of the fireproof cover shell 1. The filter screen 13 is located on the side opposite to the front gasket 3 and the middle gasket 4. The gas ejected from the explosion-proof cavity is filtered through the filter screen to prevent the particles carried by the gas when rushing out from clogging the central through hole and the first gap of the front gasket, thereby improving the reliability of the pressure relief device.
[0030] The number of the first cushion blocks 9 is four, which are evenly spaced around the central through hole 6 .
[0031] The number of the second cushion blocks 10 is four, which are evenly spaced around the central through hole 6 .
[0032] The first cushion block 9 is integrally provided with the front cushion plate 3 , and the second cushion block 10 is integrally provided with the middle cushion plate 4 .
[0033] Embodiment 2: An explosion-proof pressure relief device, comprising: a fireproof housing 1, a pressure relief valve 2 disposed at one end of the fireproof housing 1, a front gasket 3, a middle gasket 4 and a rear gasket 5 disposed in sequence at the other end of the fireproof housing 1, and the peripheries of the front gasket 3 and the rear gasket 5 are sealed and connected to the inner wall of the fireproof housing 1;
[0034] A central through hole 6 is formed at the center of each of the front gasket 3 and the rear gasket 5. A first gap 7 is formed between the front gasket 3 and the middle gasket 4. A second gap 8 is formed between the middle gasket 4 and the rear gasket 5. At least two first gasket blocks 9 located in the first gap 7 are arranged between the front gasket 3 and the middle gasket 4. At least two second gasket blocks 10 located in the second gap 8 are arranged between the middle gasket 4 and the rear gasket 5. A plurality of edge through holes 12 are arranged at intervals along the circumferential direction at the edge area where the middle gasket 4 contacts the fireproof cover shell 1.
[0035] The peripheries of the front gasket and the rear gasket are sealed and connected to the inner wall of the fireproof cover shell, at least two first gaskets located in the first gap are arranged between the front gasket and the middle gasket, and at least two second gaskets located in the second gap are arranged between the middle gasket and the rear gasket. By respectively arranging the first gasket and the second gasket inside the first gap and the second gap, a support can be formed between the front gasket, the middle gasket and the rear gasket, which is beneficial to maintaining the gap channel and also improves the overall pressure bearing performance.
[0036] The edge through hole 12 is located at the edge of the middle gasket 4 .
[0037] The gap widths of the first gap 7 and the second gap 8 are the same.
[0038] The number of the first cushion blocks 9 is four, which are evenly spaced around the central through hole 6 .
[0039] The number of the second cushion blocks 10 is four, which are evenly spaced around the central through hole 6 .
[0040] The first cushion block 9 is integrally formed with the front cushion plate 3 .
[0041] The second cushion block 10 is integrally arranged with the middle cushion 4, and the first cushion block 9 and the second cushion block 10 are circular cushion blocks.
[0042] When the above explosion-proof pressure relief device is used, the high-temperature, high-pressure gas with flames in the explosion-proof cavity enters the fireproof cover shell through the central through hole of the front gasket and passes through the first gap, the edge through hole, and the second gap in sequence. The narrow and small ventilation flow channel formed by the first gap, the edge through hole, and the second gap can block the flame from passing through, and then flows out through the central through hole of the rear gasket and is opened by the push-top pressure relief valve to release the flameless high-pressure gas. On the basis of achieving pressure relief, it can prevent the flame inside the explosion-proof cavity from jumping out during the pressure relief process to avoid igniting external combustible gases, thereby greatly improving the overall safety;
[0043] Furthermore, by arranging the first cushion block and the second cushion block inside the first gap and the second gap respectively, a support can be formed between the front cushion block, the middle cushion block and the rear cushion, which is beneficial to maintaining the gap channel and also improves the overall pressure bearing performance;
[0044] In addition, the gas ejected from the explosion-proof cavity is filtered through a filter to prevent larger particles carried by the gas when rushing out from clogging the central through hole of the front gasket, the gaps between the front gasket, the middle gasket and the rear gasket, and the edge through holes, thereby ensuring the stability of the pressure relief and improving the reliability of the use of the pressure relief device.
[0045] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. An explosion-proof pressure relief device, characterized in that: include: A fireproof cover shell (1), a pressure relief valve (2) is arranged at one end of the fireproof cover shell (1), and a front gasket (3), a middle gasket (4) and a rear gasket (5) are arranged in sequence at the other end of the fireproof cover shell (1), and the peripheries of the front gasket (3) and the rear gasket (5) are respectively sealed and connected to the inner wall of the fireproof cover shell (1); The front gasket (3) and the rear gasket (5) each have a central through hole (6) at their centers, a first gap (7) is provided between the front gasket (3) and the middle gasket (4), a second gap (8) is provided between the middle gasket (4) and the rear gasket (5), at least two first gasket blocks (9) located in the first gap (7) are arranged between the front gasket (3) and the middle gasket (4), at least two second gasket blocks (10) located in the second gap (8) are arranged between the middle gasket (4) and the rear gasket (5), and a plurality of edge through holes (12) are provided at intervals along the circumferential direction at the edge region of the middle gasket (4) in contact with the fireproof cover shell (1).
2. The explosion-proof pressure relief device according to claim 1, characterized in that: The edge through hole (12) is located at the edge of the middle gasket (4).
3. The explosion-proof pressure relief device according to claim 1, characterized in that: A filter screen (13) is provided at the other end of the fireproof cover shell (1), and the filter screen (13) is located on the side opposite to the front gasket (3) and the middle gasket (4).
4. The explosion-proof pressure relief device according to claim 1, characterized in that: The first gap (7) and the second gap (8) have the same gap width.
5. The explosion-proof pressure relief device according to claim 1, characterized in that: The number of the first cushion blocks (9) is four, which are evenly spaced and distributed around the central through hole (6).
6. The explosion-proof pressure relief device according to claim 1, characterized in that: The number of the second cushion blocks (10) is four, which are distributed at equal intervals around the central through hole (6).
7. The explosion-proof pressure relief device according to claim 1, characterized in that: The first cushion block (9) is integrally arranged with the front cushion (3) or the middle cushion (4).
8. The explosion-proof pressure relief device according to claim 1, characterized in that: The second cushion block (10) is integrally arranged with the rear cushion (5) or the middle cushion (4).
9. The explosion-proof pressure relief device according to claim 1, characterized in that: The first cushion block (9) and the second cushion block (10) are circular cushion blocks.