Lithium battery electrolyte explosion characteristics and fire suppression mechanism test platform

Abstract

The present invention discloses a test platform for the explosion characteristics and fire suppression mechanism of lithium battery electrolyte, including a box, a transparent window, a high-speed camera, a temperature detector, a pressure detector, and a nozzle for spraying ultra-fine water mist. A connection hole is provided on the top of the box, and the hole wall of the connection hole is provided with an annular sealing groove, and a high-temperature resistant metal sealing ring is provided in the sealing groove, and the cross-section of the metal sealing ring is a honeycomb structure; a seal made of memory metal is provided at a position inside the box corresponding to the nozzle, and the seal includes an annular connector coaxially connected to the nozzle and an abutment connected to the annular connector, and the position of the abutment corresponding to the metal sealing ring is set as an inclined surface, and the inclined surface abuts the metal sealing ring, and when the seal exceeds the abnormal temperature, the abutment deforms toward the metal sealing ring to fit the metal sealing ring. This solution can make the sealing state more stable, has a sealing compensation effect, and can resist the sealing influence caused by aging.

Description

Technical Field

[0001] The present invention relates to lithium battery detection, and in particular to a testing platform for the explosion characteristics and fire extinguishing and suppression mechanism of lithium battery electrolyte. Background Art

[0002] The thermal runaway problem of lithium iron phosphate batteries has become one of the key issues in the field of new energy vehicles and energy storage.

[0003] Once a battery experiences thermal runaway, external protective devices are unlikely to effectively prevent the self-accelerating chain reaction of internal chemical materials. Therefore, improving the thermal stability of internal battery materials is a fundamental measure to reduce the potential safety hazards of battery fires.

[0004] The electrolyte also participates in the multi-step chain reaction of battery thermal runaway. The combustion of the electrolyte determines the development speed, spread direction and optimal time of fire fighting of lithium battery fire. In addition, the physical and chemical properties of the electrolyte are quite different from those of ordinary hydrides, and it is easy to burn. Therefore, it is necessary to study the combustion characteristics of the electrolyte under high temperature environment to reveal the difference between it and the combustion characteristics of ordinary hydrides. HRR is the most important combustion characteristic parameter. At present, cone calorimeter is mainly used to study the HRR of solid combustibles. Although the fluidity and vertical radiation of liquid fuel are somewhat inapplicable to liquid fuel, liquid combustion is also a kind of oxygen-consuming combustion. Therefore, there are also a large number of studies that use cone calorimeter to study the combustion characteristics of liquid fuel.

[0005] Generally, a special test platform is needed to study lithium battery electrolytes. According to the needs of the test, it is divided into three types: small size, medium size, and large size. The small size test platform is mainly adiabatic accelerated calorimeter (ARC), differential scanning calorimeter (DSC), and flash point tester. This detection range is small, while the medium size generally uses a cone calorimeter, and the large size is a large-size room fire test-ISO9705. This type of test platform involves spraying ultra-fine water mist to cool down to prevent deflagration or suppress deflagration. Referring to a lithium-ion battery combustion and fine water mist suppression test device (CN117491424A) disclosed in a Chinese invention patent in the prior art, the basic test platform structure and composition are disclosed in the scheme, but the specific installation method of the water mist nozzle is not disclosed. Different installations of the water mist nozzle will at least have the following problems: airtightness problems, how to ensure the sealing state, prevent water and air leakage, and improve the variable control effect during the test process, and also need to overcome how to resist the impact of aging in a high-temperature test environment to avoid component aging and cause the sealing state to fail. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a test platform for the explosion characteristics and fire extinguishing suppression mechanism of lithium battery electrolyte, which can make the sealing state more stable and have a sealing compensation function to resist the sealing influence caused by aging.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lithium battery electrolyte explosion characteristics and fire extinguishing suppression mechanism test platform, comprising a box for combustion testing, a transparent window arranged on the box, a high-speed camera arranged at a position corresponding to the transparent window, a temperature detector arranged in the box, a pressure detector arranged in the box, and a nozzle installed on the box for spraying ultra-fine water mist, wherein the nozzle is located at the top of the box and corresponds to the center, a connecting hole for installing the nozzle is arranged on the top of the box, and an annular sealing groove is arranged on the hole wall of the connecting hole along the circumferential extension, a high-temperature resistant metal sealing ring is arranged in the sealing groove, and the metal sealing ring is provided in the sealing groove. The cross-section of the ring is a honeycomb structure, and inert gas is filled inside it; the connecting end of the nozzle extends out from the box through the connecting hole, and is connected to the external pipe in cooperation with a nut; a seal made of memory metal is arranged at a position inside the box corresponding to the nozzle and close to the connecting hole, and the seal includes an annular connector coaxially connected to the nozzle and an abutment connected to the annular connector, the abutment is annular and coaxially arranged with the annular connector, and the position of the abutment corresponding to the metal sealing ring is arranged as an inclined surface, and the inclined surface abuts the metal sealing ring, the transformation temperature of the seal is 50°C, and when the temperature exceeds this temperature, the abutment deforms toward the metal sealing ring to fit the metal sealing ring.

[0008] As a further improvement of the present invention, the honeycomb structure is filled with a C-shaped expansion piece, which is made of memory metal and has a transformation temperature of 50° C. When the temperature exceeds this temperature, the expansion piece expands to support or expand the metal sealing ring.

[0009] As a further improvement of the present invention, a detachable cover is further provided at a position corresponding to the connecting hole on the outside of the box body, and the cover body is connected to a filter. When the temperature of the seal and the expansion member is lower than 50°C, a gap is formed between the seal and the metal sealing ring, and air passing through the filter and the cover body is allowed to enter and exit. The box body can also be detachably connected to a vacuum pump for extracting air from the box body, and introducing air passing through the filter and the cover body into the box body after negative pressure is formed.

[0010] As a further improvement of the present invention, a plurality of notches connected to the sealing grooves are provided at positions corresponding to the nuts on the box body, so as to cooperate with the metal sealing rings for air inlet and outlet.

[0011] As a further improvement of the present invention, a ring-shaped matching piece for matching with the abutment piece is provided at a position corresponding to the abutment piece on the metal sealing ring. When the pressure in the box increases, the abutment piece and the matching piece tightly abut against each other through the pressure inside the box.

[0012] As a further improvement of the present invention, the cover body can be slidably arranged on the pipe of the nozzle, and a mounting hole is arranged on the cover body at a position corresponding to the pipe, a rubber ring is sleeved on the pipe, and a step is arranged in the mounting hole, the step is used to support the sealing ring, the inner diameter of the sealing ring is larger than the outer diameter of the pipe, a thread is arranged in the mounting hole and a sealing nut is arranged in the mounting hole, the sealing nut is sleeved on the pipe and is provided with an external thread matching the mounting hole, the sealing nut is threadedly connected to the mounting hole and is used to extrude the sealing ring so that the sealing ring is tightened to seal the pipe after deformation and is fixed to the pipe.

[0013] As a further improvement of the present invention, a strong magnetic magnet is provided on the edge of one end of the cover body corresponding to the surface of the box body, and a rubber sealing ring is provided at the end of the cover body, and the cover body is adhered to the surface of the box body through the strong magnetic magnet and sealed with the surface of the box body through the rubber sealing ring, and the cover body is positioned on the surface of the box body through the strong magnetic magnet and fixed to the pipe through the sealing nut.

[0014] The beneficial effects of the present invention are:

[0015] 1. The honeycomb structure in the metal sealing ring can provide better axial deformation and better radial support. It can make the state of the metal sealing ring more stable, the sealing effect more stable, and the sealing structure formed by cooperating with the nozzle and the inner wall of the sealing groove is better.

[0016] 2. The metal sealing ring is also sealed in conjunction with a seal made of memory metal, which can respond to the test in the box, causing the seal to deform, and then cooperate with the edge of the metal sealing ring to abut against it to produce a sealing effect, so that a better sealing effect can be produced during the test and the sealing effect can be ensured.

[0017] 3. Under abnormal temperature, the seal can have a certain deformation margin when matched with the metal sealing ring, which can provide sealing compensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the nozzle position structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the nozzle position of the present invention;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the test box of the present invention;

[0022] Figure 5 for Figure 3 A magnified view of part A in FIG.

[0023] Figure 6 It is a schematic diagram of a honeycomb structure inside the metal sealing ring of the present invention.

[0024] Figure numbers: 1. Box body; 11. Connecting hole; 12. Sealing groove; 13. Metal sealing ring; 131. Matching part; 14. Honeycomb structure; 15. Expansion part; 2. Transparent window; 3. Temperature detector; 4. Pressure detector; 5. Nozzle; 6. Nut; 7. Sealing part; 71. Ring connecting part; 72. Abutment part; 8. Cover body; 81. Mounting hole; 82. Rubber ring; 83. Step; 84. Sealing nut; 85. Strong magnetic magnet; 86. Rubber sealing ring; 9. Pipeline. DETAILED DESCRIPTION

[0025] The present invention will be further described below in detail with reference to the embodiments shown in the accompanying drawings.

[0026] Reference Figure 1-6 As shown,

[0027] A test platform for the explosion characteristics and fire suppression mechanism of lithium battery electrolyte, comprising a box 1 for combustion testing, a transparent window 2 arranged on the box 1, a high-speed camera arranged at a position corresponding to the transparent window 2, a temperature detector 3 arranged in the box 1, a pressure detector 4 arranged in the box 1, and a nozzle 5 installed on the box 1 for spraying ultrafine water mist, wherein the nozzle 5 is located at the top of the box 1 and corresponds to the center, a connecting hole 11 for installing the nozzle 5 is arranged on the top of the box 1, and an annular sealing groove 12 is arranged on the hole wall of the connecting hole 11 along the circumferential direction, a high-temperature resistant metal sealing ring 13 is arranged in the sealing groove 12, and the cross-section of the metal sealing ring 13 is a honeycomb structure 14, and its interior Filled with inert gas; the connecting end of the nozzle 5 extends from the box body 1 through the connecting hole 11, and is connected to the external pipe 9 in cooperation with the nut 6; the nozzle 5 is provided with a seal 7 made of memory metal at a position inside the box body 1 and close to the connecting hole 11, the seal 7 comprises an annular connector 71 coaxially connected to the nozzle 5 and an abutment 72 connected to the annular connector 71, the abutment 72 is annular and coaxially arranged with the annular connector 71, and the position of the abutment 72 corresponding to the metal sealing ring 13 is arranged as an inclined surface, and the inclined surface abuts the metal sealing ring 13, the deformation temperature of the seal 7 is 50°C, and when the temperature is exceeded, the abutment 72 is deformed toward the metal sealing ring 13 to fit the metal sealing ring 13.

[0028] In this solution, the box 1 is used for deflagration testing, and the flame conditions and gas ratios generated by the deflagration are used for analysis. The high-speed camera can record the images of the deflagration through the transparent window 2. At the same time, the exhaust gas from the combustion can be analyzed, and the ratios of each component can be calculated to determine whether the current electrolyte composition or battery condition meets the target. The temperature detector 3 and the pressure detector 4 can feedback the temperature and pressure conditions generated by the current combustion, and fully feedback the values ​​of the test environment, while the nozzle 5 is used to spray ultrafine water mist, which can determine whether the current deflagration test can be suppressed or alleviated by spraying ultrafine water mist. By adjusting the ratio of the electrolyte components, repeated tests can be performed to obtain a better ratio composition. The temperature detector 3 can use a thermocouple, which has a high temperature resistance effect. The nozzle 5 will be atomized during use, and will generate certain vibrations during the combustion test, which is a high-temperature environment. The sealing groove 12 cooperates with the metal sealing ring 13 for sealing, which can produce a better sealing effect in a high-temperature environment, and the interior of the honeycomb structure 14 can produce a better deformation support effect. It should be noted that the honeycomb structure 14 is on the cross-section of the metal sealing ring 13, which can provide a better axial deformation effect and better radial support. The state of the metal sealing ring 13 can be more stable, the sealing effect is more stable, and the sealing structure formed by cooperating with the nozzle 5 and the inner wall of the sealing groove 12 is better. Among them, the metal sealing ring 13 is also sealed with a seal 7 made of memory metal. When the experiment is carried out in the box 1, the temperature inside it will rise to more than 50°C, that is, the temperature at a higher temperature in the normal temperature state. After exceeding 50°C, the seal 7 will be deformed, and then cooperate with the edge of the metal sealing ring 13 to produce a sealing effect. This solution can adapt to the test process, so that a better sealing effect can be produced during the test, and the sealing effect can be ensured. Moreover, the seal 7 can have a certain deformation margin when cooperating with the metal sealing ring 13 under the cooperation of the abnormal temperature, that is, the seal 7 still has a certain deformation space after abutting the metal sealing ring 13, but because it is in an abutting state with the metal sealing ring 13, its deformation is suppressed, but the abutting sealing effect is retained, thereby playing a sealing compensation role.

[0029] In order to further improve the sealing effect, the honeycomb structure 14 is filled with a C-shaped expansion member 15 . The expansion member 15 is made of memory metal and has a transformation temperature of 50° C. When the temperature exceeds this value, the expansion member 15 expands to support or expand the metal sealing ring 13 .

[0030] The expansion piece 15 inside the metal sealing ring 13 can expand during the test, allowing the metal sealing ring 13 to swell, forming a tighter abutment with the sealing member 7, and cooperating with the sealing member 7 for bidirectional sealing compensation. Better sealing can be achieved through the bidirectional mutual extrusion effect, and the channel formed by the honeycomb structure 14 can make the distribution of the expansion piece 15 more uniform, the expansion more uniform, and the shape of the metal sealing ring 13 can be better maintained, making the sealing effect more stable.

[0031] In the above structure, the sealing is mainly achieved by deformation and mutual abutment between the metal sealing ring 13 and the sealing member 7. Generally, the air in the box 1 is replaced before the test, and the gas inside is replaced with a component that does not interfere with the experiment. Therefore, it is also necessary to evacuate the air through a vacuum. Although it is mentioned above that a pressure regulating hole is provided on the box 1, as another option, the following solution is also provided:

[0032] A detachable cover 8 is also provided at a position corresponding to the connecting hole 11 on the outside of the box body 1, and the cover body 8 is connected to a filter. When the temperature of the seal 7 and the expansion member 15 is lower than 50°C, a gap is formed between the seal 7 and the metal sealing ring 13, and air passing through the filter and the cover body 8 is allowed to enter and exit. The box body 1 is also detachably connected to a vacuum pump for extracting air from the box body 1 and introducing the air passing through the filter and the cover body 8 into the box body 1 after negative pressure is formed.

[0033] Before the side view begins, the temperature of the seal 7 and the metal sealing ring 13 is still lower than 50°C. At this time, the seal 7 and the expansion member 15 are still in the first state (i.e., the state of not reaching the transformation temperature). At this time, a gap will be generated between the seal 7 and the metal sealing ring 13. By allowing the cover body 8 to fit on the box body 1 and cover the corresponding connection hole 11 position, the vacuum pump is allowed to work, and then the purified air passing through the filter and the cover body 8 is introduced into the box body 1 from the gap between the seal 7 and the metal sealing ring 13, ensuring that the box body 1 is in an undisturbed state when the test starts. In addition, after the test is completed, the interior needs to be cleaned and dried. The gap between the metal sealing ring 13 and the seal 7 can still cooperate with the cover body 8 for negative pressure extraction to quickly discharge moisture. After the test, the temperature will quickly exceed 50°C, and the seal 7 and the metal sealing ring 13 will quickly fit tightly to achieve sealing. After the test is completed, only when the temperature drops to a safe temperature below 50°C, will the gap between the metal sealing ring 13 and the seal 7 be re-formed to avoid hot air leaking from the gap and causing safety hazards. At the same time, it can avoid gas leakage during the test and affect the test results.

[0034] Preferably, the box body 1 is provided with a plurality of notches connected to the sealing groove 12 at positions corresponding to the nut 6, for air to enter and exit in cooperation with the metal sealing ring 13. The notches are mainly used for ventilation in cooperation with the cover body 8, so that the gap between the sealing member 7 and the metal sealing ring 13 can be smoothly connected with the outside of the box body 1, and then cooperate with the cover body 8 for air to enter and exit.

[0035] In a further configuration, a ring-shaped matching piece 131 for matching the abutment piece 72 is provided at a position corresponding to the abutment piece 72 on the metal sealing ring 13. When the pressure in the box 1 increases, the abutment piece 72 and the matching piece 131 are closely abutted against each other through the pressure inside the box 1. The matching piece 131 and the abutment piece 72 in this scheme can further promote sealing when pressure is generated inside the box 1 during the test, and the matching piece 131 and the abutment piece 72 are compressed by the internal pressure drop to improve the sealing effect. It should be noted that the matching piece 131 can be a structure with a thickness less than that of the abutment piece 72. The abutment piece 72 is made of memory metal, so it has a larger deformation and extension space, while the matching piece 131 is made of the same material as the metal sealing ring 13. Reducing its thickness can make it easier to form a match with the abutment piece 72 and easier to match the pressure inside the box 1.

[0036] In order to use the cover body 8, the cover body 8 can be slidably arranged on the pipe 9 of the nozzle 5, and a mounting hole 81 is arranged on the cover body 8 at a position corresponding to the pipe 9, a rubber ring 82 is sleeved on the pipe 9, and a step 83 is arranged in the mounting hole 81, and the step 83 is used to support the sealing ring, the inner diameter of the sealing ring is larger than the outer diameter of the pipe 9, a thread is arranged in the mounting hole 81, and a sealing nut 846 is arranged in the mounting hole 81, the sealing nut 84 is sleeved on the pipe 9, and is provided with an external thread adapted to the mounting hole 81, the sealing nut 846 is threadedly connected to the mounting hole 81, and is used to extrude the sealing ring so that the sealing ring can be tightened and sealed to the pipe 9 after deformation, and is fixed to the pipe 9.

[0037] The cover body 8 can be slidably mounted on the pipe 9, and can be conveniently disengaged from the box body 1 during internal testing, so as to avoid the influence of high temperature on the cover body 8, which may reduce its service life. At the same time, the sealing effect of the cover body 8 can be improved during use. When the air in the box body 1 needs to be allowed to enter and exit, the cover body 8 is first pressed against the surface of the box body 1, and then the sealing nut 846 is pushed, and the rubber ring 82 is brought into contact with the step 83. As the sealing nut 846 is threadedly connected to the mounting hole 81, the sealing nut 846 will cooperate with the step 83 to squeeze the rubber ring 82, causing it to deform and clamp the pipe 9. This solution is more convenient to install, and will not damage the pipe 9. It is also convenient to disengage the seal to allow the cover body 8 to move on the pipe 9.

[0038] As a solution to further improve the installation efficiency and sealing effect of the cover body 8, a strong magnetic magnet 85 is provided on the edge of one end of the cover body 8 corresponding to the surface of the box body 1, and a rubber sealing ring 86 is provided at the end of the cover body 8. The cover body 8 is attached to the surface of the box body 1 through the strong magnetic magnet 85, and is sealed with the surface of the box body 1 through the rubber sealing ring 86. After the cover body 8 is positioned on the surface of the box body 1 by the strong magnetic magnet 85, it is fixed to the pipe 9 through the sealing nut 84.

[0039] The strong magnetic magnet 85 and the rubber sealing ring 86 can make the cover body 8 fit the part of the box body 1 to form a better sealing effect, and the strong magnetic magnet 85 can make the cover body 8 be attracted to the box body 1 for positioning, making the sealing nut 84 faster to install. There is no need to press the cover body 8 while turning the sealing nut 84. The sealing nut 84 can be directly operated with both hands, which is more efficient and convenient, and can improve the sealing effect.

[0040] The strong magnetic magnet 85 can be located inside the cover 8, and the rubber sealing ring 86 is located outside the cover 8. The rubber sealing ring 86 and the strong magnetic magnet 85 are separated by the cover 8 to prevent the strong magnetic magnet 85 from sticking the rubber sealing ring 86 to the surface of the box 1, causing the rubber sealing ring 86 to be torn and separated from the cover 8 when the cover 8 is removed.

[0041] In summary, this solution enables the connection at the nozzle 5 to be flexibly switched between sealed and unsealed, and will automatically adjust as the test progresses. It will not be reconnected to the outside world until the temperature inside the box 1 drops to a safe temperature, which is convenient for drying and gas treatment. It also has a sealing compensation effect, and makes full use of the air pressure generated during the test inside the box 1 to promote sealing, thereby further improving the sealing effect.

[0042] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A test platform for the explosion characteristics and fire suppression mechanism of lithium battery electrolyte, comprising a box for combustion testing, a transparent window arranged on the box, a high-speed camera arranged at a position corresponding to the transparent window, a temperature detector arranged in the box, a pressure detector arranged in the box, and a nozzle installed on the box for spraying ultra-fine water mist, characterized in that: The nozzle is located at the top of the box body and corresponds to the center position. A connecting hole for installing the nozzle is provided on the top of the box body, and an annular sealing groove is provided on the hole wall of the connecting hole along the circumferential extension. A high-temperature resistant metal sealing ring is provided in the sealing groove. The cross-section of the metal sealing ring is a honeycomb structure, and an inert gas is filled inside it. The connecting end of the nozzle extends out from the box body through the connecting hole, and is connected to the external pipeline in cooperation with a nut. A sealing member made of memory metal is provided at a position of the nozzle corresponding to the inside of the box body and close to the connecting hole. The sealing member includes an annular connecting member coaxially connected to the nozzle and an abutting member connected to the annular connecting member. The abutting member is annular and coaxially arranged with the annular connecting member, and the position of the abutting member corresponding to the metal sealing ring is set to an inclined surface, and the inclined surface abuts the metal sealing ring. The transformation temperature of the seal is 50°C, and when the temperature exceeds this temperature, the abutting member deforms toward the metal sealing ring to fit the metal sealing ring.

2. The lithium battery electrolyte explosion characteristics and fire extinguishing suppression mechanism test platform according to claim 1, characterized in that: The honeycomb structure is filled with a C-shaped expansion piece, which is made of memory metal and has a transformation temperature of 50° C. When the temperature exceeds this temperature, the expansion piece expands to support or expand the metal sealing ring.

3. The lithium battery electrolyte explosion characteristics and fire extinguishing suppression mechanism test platform according to claim 2, characterized in that: A detachable cover is also provided at a position corresponding to the connecting hole on the outside of the box body, and the cover body is connected to a filter. When the temperature of the seal and the expansion member is lower than 50°C, a gap is formed between the seal and the metal sealing ring, and air passing through the filter and the cover body is allowed to enter and exit. The box body is also detachably connected to a vacuum pump for extracting air from the box body and introducing air passing through the filter and the cover body into the box body after negative pressure is formed.

4. The lithium battery electrolyte explosion characteristics and fire suppression mechanism test platform according to claim 3, characterized in that: A plurality of notches connected to the sealing grooves are arranged at positions corresponding to the nuts on the box body, and are used to cooperate with the metal sealing rings for air to enter and exit.

5. The lithium battery electrolyte explosion characteristics and fire suppression mechanism test platform according to claim 4, characterized in that: An annular matching piece for matching the abutment piece is arranged at a position on the metal sealing ring corresponding to the abutment piece. When the pressure in the box increases, the abutment piece and the matching piece are tightly abutted against each other by the pressure inside the box.

6. The lithium battery electrolyte explosion characteristics and fire suppression mechanism test platform according to claim 5, characterized in that: The cover body is slidably arranged on the pipe of the nozzle, and a mounting hole is arranged on the cover body at a position corresponding to the pipe, a rubber ring is sleeved on the pipe, and a step is arranged in the mounting hole, the step is used to support the sealing ring, the inner diameter of the sealing ring is larger than the outer diameter of the pipe, a thread is arranged in the mounting hole, and a sealing nut is arranged in the mounting hole, the sealing nut is sleeved on the pipe and is provided with an external thread adapted to the mounting hole, the sealing nut is threadedly connected to the mounting hole, and is used to extrude the sealing ring so that the sealing ring is tightened to seal the pipe after deformation, and is fixed to the pipe.

7. The lithium battery electrolyte explosion characteristics and fire suppression mechanism test platform according to claim 6, characterized in that: A strong magnetic magnet is arranged on the edge of one end of the cover body corresponding to the surface of the box body, and a rubber sealing ring is arranged on the end of the cover body. The cover body is attached to the surface of the box body through the strong magnetic magnet and is sealed with the surface of the box body through the rubber sealing ring. After the cover body is positioned on the surface of the box body through the strong magnetic magnet, it is fixed to the pipe through the sealing nut.

Images