A venting panel

Abstract

This invention discloses an explosion relief plate, comprising: a flange support; a first cover and a second cover, which are mounted on the flange support in a split manner and are both in sealing contact with the flange support, with the edge of the first cover pressing against the edge of the second cover to form a sealing contact; and an explosion relief bolt module for locking the first cover relative to the flange support, comprising a fixing seat on the flange support, an adjusting ring having an escape hole in the fixing seat, a deformable gasket in the adjusting ring covering the escape hole, an explosion relief bolt connected to the first cover and passing through the adjusting ring and the deformable gasket, and a limiting member at the end of the explosion relief bolt pressing against the deformable gasket; when excessive pressure pushes the first cover and / or the second cover to pull the explosion relief bolt upward, the limiting member at the lower end of the explosion relief bolt pulls the deformable gasket to drive the central hole of the deformable gasket to deform and expand, and the limiting member disengages along the central hole and separates from the escape hole, thereby unlocking.

Description

Technical Field

[0001] This invention relates to the field of explosion venting technology, and specifically to an explosion venting plate. Background Technology

[0002] With the continuous development of energy storage technology, energy storage containers are an important part of energy systems such as photovoltaic power stations and wind-solar hybrid power stations. The safety of the entire energy storage battery cabinet is very important, including the cabinet and the energy storage battery. When the battery experiences thermal runaway, it will cause a large amount of flammable gas to accumulate, and the pressure inside the cabinet will rise rapidly, which can easily lead to the risk of cabinet explosion, seriously endangering equipment and personal safety.

[0003] Chinese utility model patent application number 202320816409.5 discloses a pressure relief plate for energy storage equipment. The plate includes a rectangular body, comprising, from top to bottom, a climate protection cover, insulation cotton, an outlet flange, an upper gasket, a strength membrane, and a lower gasket. One side of the climate protection cover is an installation side, the side of the strength membrane corresponding to the installation side is a sealing side, and the other three sides are pressure relief sides. Each pressure relief side has an opening that can be opened for pressure relief at a preset pressure threshold. This design uses a climate protection cover to limit the opening direction, reducing the impact of climate on the plate and extending its overall service life, while minimizing the impact on the pressure relief. The insulation cotton provides insulation and weather resistance, the strength membrane enables pressure relief at a preset pressure threshold, and the first and second limiting rings improve the stability of the metal structure.

[0004] The pressure relief method of the above-mentioned explosion relief plate is as follows: one side of the strength membrane corresponding to the installation side is the sealing side, and the other three sides are the pressure relief sides. Several openings are provided at equal intervals on the pressure relief sides. These openings can meet the requirement that the strength membrane opens under a specific pressure threshold, thereby realizing the pressure relief function.

[0005] The aforementioned single-opening explosion relief plate can only be torn and vented along the direction of the pressure relief edge. The weather protection cover is prone to getting stuck due to the material, and its explosion relief opening angle is small, which reduces the explosion relief rate.

[0006] In view of the above, the inventors propose the following technical solution. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a venting plate.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The explosion relief plate includes: a flange bracket; a first cover and a second cover, which are installed on the flange bracket in a split manner and are both in sealed contact with the flange bracket, and the edge of the first cover overlaps the edge of the second cover to form a sealed contact; an explosion relief bolt module, which is disposed between the first cover and the flange bracket and is used to lock the first cover relative to the flange bracket; the explosion relief bolt module includes a fixing seat disposed on the flange bracket, and a device disposed within the fixing seat and having an escape function. The escape hole includes an adjusting ring, a deformable shim located inside the adjusting ring and covering the escape hole, a venting bolt connected to the first cover and passing through the central hole of the adjusting ring and the deformable shim, and a limiting member located at the end of the venting bolt and pressing against the deformable shim. When excessive pressure pushes the first cover and / or the second cover to pull the venting bolt upward, the limiting member at the lower end of the venting bolt pulls the deformable shim to cause the central hole of the deformable shim to deform and expand. The limiting member then disengages along the central hole of the deformable shim and leaves the escape hole, thus unlocking the device.

[0009] Furthermore, in the above technical solution, the limiting member is a nut that is spirally fixed to the lower end of the explosion venting bolt. The outer diameter of the nut is larger than the inner diameter of the central hole, and the nut is in contact with the deformable washer. Alternatively, the limiting member includes a baffle sleeved on the lower end of the explosion venting bolt and a nut that is spirally fixed to the lower end of the explosion venting bolt and in contact with the baffle. The outer diameter of the baffle is larger than the inner diameter of the central hole, and the baffle is in contact with the deformable washer.

[0010] Furthermore, the above technical solution also includes a venting spring assembly, which is disposed between the flange bracket and the first and second covers, and provides outward elastic force to the first and second covers; when unlocked, the venting spring assembly pops the first and second covers outward.

[0011] Furthermore, in the above technical solution, the explosion relief spring assembly includes a first spring and a second spring installed on the fixed base, the upper ends of the first spring and the second spring respectively pressing against the inner walls of the first cover and the second cover to be compressed.

[0012] Furthermore, in the above technical solution, the fixed seat is provided with a movable groove, the adjusting ring is installed in the movable groove through the second pin and can swing in the movable groove with the second pin as the axis, and the adjusting ring can also adjust the relative position relative to the second pin. The two ends of the second pin are respectively placed in the transverse shaft groove provided on the lower end face of the fixed seat.

[0013] Furthermore, in the above technical solution, the deformable gasket is in the shape of a flat plate; or, the deformable gasket is in the shape of a downwardly convex spherical surface.

[0014] Furthermore, in the above technical solution, the explosion relief bolt is movably installed in the mounting base, and the lower end of the explosion relief bolt extends beyond the lower end face of the mounting base. The mounting base is locked to the inner wall of the first cover by a first screw. The mounting base is provided with a mounting groove, and a universal joint is provided on the upper outer side of the explosion relief bolt. The bolt is movably installed in the mounting groove in a horizontally swinging manner through the universal joint.

[0015] Furthermore, in the above technical solution, a protective cover is also provided at the bottom of the fixing base, which covers the adjusting ring, the explosion vent bolt, the deformable gasket, and the limiting component; a first frame for increasing structural strength is fixed on the inner side of the first cover, the first frame is provided with a plurality of spaced first mounting grooves, the first mounting grooves are provided with first insulation cotton, and a first cover plate is also fixed on the first frame to seal and limit the first insulation cotton; a second frame for increasing structural strength is fixed on the inner side of the second cover, the second frame is provided with a plurality of spaced second mounting grooves, the second mounting grooves are provided with second insulation cotton, and a second cover plate is also fixed on the second frame to seal and limit the second insulation cotton.

[0016] Furthermore, in the above technical solution, the fixing base is also provided with a relief groove for accommodating the mounting base, and the fixing base is also provided with a first groove and a second groove on both sides of the relief groove. A first washer is embedded between the two lowermost spring coils of the first spring, and the lower end of the first spring is embedded in the first groove. A third screw passes through the first washer and is screwed to the bottom of the first groove. A second washer is embedded between the two lowermost spring coils of the second spring, and the lower end of the second spring is embedded in the second groove. A fourth screw passes through the second washer and is screwed to the bottom of the second groove.

[0017] Furthermore, in the above technical solution, both the first and second covers are mounted to the flange bracket via hinges on the other side of the explosion vent bolt module; the second cover has a window through which the lower end of the explosion vent bolt module and the first spring pass; when the explosion vent plate is in use, the second cover is first placed on the flange bracket, and the second cover contacts the second spring; then the first cover is placed on the flange bracket, and the edge of the first cover presses against the edge of the second cover and onto the first spring, and the first cover is connected to the flange bracket via the explosion vent bolt module, so that after compressing the first and second springs, the first and second covers are tightened relative to the flange bracket.

[0018] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention uses a venting bolt module to tighten and lock the first and second covers relative to the flange support. Its connection structure is stable and will not cause the first and second covers to open unexpectedly relative to the flange support. Moreover, in the later stage, when the pressure is too high and pushes the first and second covers, the venting bolt is pulled outward, causing the limiting member at the lower end of the venting bolt to come out along the center hole of the deformable gasket and disengage from the escape hole. After unlocking, the first and second covers will be pushed outward by the pressure, so that the first and second covers can be opened outward more effectively, thereby ensuring the stable pressure relief. Its opening angle is large, so as to form a larger pressure relief channel, thus having a better pressure relief effect. In particular, because the protective cover has a double-opening structure, and the first and second covers open from the middle to both sides, it is easier to open and has a larger opening angle. At the same time, it reduces the height of the entire product to the minimum and is not prone to jamming due to material limitations. In addition, it has a larger explosion venting opening angle and a higher explosion venting rate. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention.

[0020] Figure 2 This is a perspective view of the invention from another angle.

[0021] Figure 3 This is an exploded view of the present invention.

[0022] Figure 4 This is a partial cross-sectional view of the present invention.

[0023] Figure 5 This is a cross-sectional view (partial) from another perspective of the present invention.

[0024] Figure 6 This is an exploded perspective view of the explosion relief spring assembly in this invention.

[0025] Figure 7 This is an exploded perspective view of the explosion relief spring assembly in this invention.

[0026] Figure 8 This is an assembly diagram of the first cover and the explosion vent bolt module in this invention.

[0027] Figure 9 This is an assembly diagram of the explosion vent bolt module in this invention.

[0028] Figure 10 yes Figure 9 Exploded view.

[0029] Figure 11 This is a perspective view of the explosion vent bolt module in this invention.

[0030] Figure 12 This is an exploded view of the first cover in this invention.

[0031] Figure 13 This is an exploded view of the second cover in this invention. Detailed Implementation

[0032] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0033] See Figure 1-13 As shown, the present invention is an explosion relief plate, which includes a flange bracket 1, a protective cover 200 rotatably mounted on the flange bracket 1, and thermal insulation cotton disposed inside the protective cover 200.

[0034] Specifically, the protective cover 200 includes a first cover 2 and a second cover 3, which are installed on the flange bracket 1 in a mutually openable manner and are in sealing contact with the flange bracket 1. Both the first cover 2 and the second cover 3 are provided with the aforementioned insulation cotton. The edge of the first cover 2 overlaps the edge of the second cover 3 to form a sealing contact, thereby securing the second cover 3 to the flange bracket 1 as well. Because the protective cover has a double-opening structure, consisting of two parts, the first cover 2 and the second cover 3, when the explosion relief device opens due to excessive pressure, the first and second covers open from the center outwards, making opening easier and resulting in a larger opening angle. This also minimizes the overall height of the product and avoids the risk of jamming due to material limitations. Furthermore, it offers a larger explosion relief opening angle and a higher explosion relief rate.

[0035] The flange bracket 1 adopts a flange mounting type, which corresponds one-to-one with the flanges preset on the installation interface of products such as containers and battery pack sealing boxes. The installation and fixing can be done with ordinary screws, nuts and washers. When there are special requirements for the installation height, rivet nuts can also be used for installation.

[0036] A lower sealing gasket 11 is attached to the lower end of the flange bracket 1. The size of the lower sealing gasket 11 is smaller than the size of the lower end of the flange bracket 1. An upper sealing gasket 12 is provided at the upper end of the flange bracket 1 for sealing assembly with the inner surfaces of the first cover 2 and the second cover 3. This upper sealing gasket 12 is an internal structure, which solves the problem of accelerated aging of the upper sealing gasket 12 caused by long-term exposure to the external environment. Furthermore, the inner edge of the first cover 2 and the outer edge of the second cover 3 are also sealed together by a sealing ring 20, which achieves a stable seal.

[0037] To enhance the overall strength of the pressure relief plate and improve product quality, improvements were made to both the first cover 2 and the second cover 3. Specifically: The inner side of the first cover 2 is fixed with a first frame 21 to increase structural strength. The first frame 21 has several spaced first mounting grooves 211, and first insulation cotton 22 is placed inside each first mounting groove 211. A first cover plate 23 is also fixed to the first frame 21 to seal and confine the first insulation cotton 22. The inner side of the second cover 3 is fixed with a second frame 31 to increase structural strength. The second frame 31 has several spaced second mounting grooves 311, and second insulation cotton 32 is placed inside each second mounting groove 311. A second cover plate 33 is also fixed to the second frame 31 to seal and confine the second insulation cotton 32.

[0038] The inner sides of the first cover 2 and the second cover 3 are respectively provided with a first frame 21 and a second frame 31. The first frame 21 and the second frame 31 can act as reinforcing ribs, thereby enhancing the structural strength of the first cover 2 and the second cover 3. This effectively solves the problem of pressure resistance under harsh working conditions, such as under special hail conditions, preventing deformation of the first cover 2 and the second cover 3, thus improving product quality. In addition, the first frame 21 and the second frame 31 also serve to install the first insulation cotton 22 and the second insulation cotton 32. The first cover plate 23 and the second cover plate 33 respectively seal and limit the first insulation cotton 22 and the second insulation cotton 32, ensuring the installation stability of the first insulation cotton 22 and the second insulation cotton 32, and can also hide the insulation cotton, so that the entire explosion relief plate also has a heat preservation function.

[0039] An explosion vent bolt module 500 is provided between the first cover 2 and the flange bracket 1. The explosion vent bolt module 500 is used to lock the first cover 2 relative to the flange bracket 1. Preferably, there are two sets of explosion vent bolt modules 500, which make the connection more stable and the locking effect better.

[0040] Specifically, the explosion vent bolt module 500 includes a fixed base 41 mounted on the flange bracket 1, an adjusting ring 55 disposed within the fixed base 41 and having an escape hole 551, a deformable gasket 56 disposed within the adjusting ring 55 and covering the escape hole 551, an explosion vent bolt 5 connected to the first cover 2 and passing through the central hole 561 of the adjusting ring 55 and the deformable gasket 56, and a limiting member 57 disposed at the end of the explosion vent bolt 5 and pressing against the deformable gasket 56; that is, one end of the explosion vent bolt 5 is connected to the first cover 2, and the other end presses against the deformable gasket 56 through the limiting member 57, thereby connecting it to the fixed base 41. This locks the first cover 2 relative to the flange bracket 1. When excessive pressure pushes the first cover 2 and / or the second cover 3 to pull the explosion relief bolt 5 upward, the limiting member 57 at the lower end of the explosion relief bolt 5 pulls the deformable gasket 56 to cause the deformable gasket 56 to deform. Specifically, the limiting member 57 squeezes and deforms the center hole 561 of the deformable gasket 56 to expand its inner diameter, so that the limiting member 57 will later come out along the center hole 561 of the deformable gasket 56 and disengage from the escape hole 551, thus unlocking. Finally, the pressure pushes the first cover 2 and the second cover 3 outward to relieve pressure and achieve the purpose of explosion relief. In this invention, the explosion-proof bolt module 500 is used to tighten and lock the first cover 2 and the second cover 3 relative to the flange bracket 1. The connection structure is stable and will not cause the first cover 2 and the second cover 3 to open unexpectedly relative to the flange bracket 1. In the later stage, if the pressure is too high and pushes the first cover 2 and the second cover 3, the explosion-proof bolt 5 will be pulled outward, causing the limiting member 57 at the lower end of the explosion-proof bolt 5 to disengage along the central hole 561 of the deformable gasket 56 and disengage from the escape hole 551. After unlocking, the first cover 2 and the second cover 3 will be pushed outward by the pressure, so that the first cover 2 and the second cover 3 can be opened outward more effectively, thereby ensuring the stable pressure relief. The large opening angle forms a larger pressure relief channel, thus having a better pressure relief effect. In particular, because the protective cover has a double-opening structure, and the first and second covers open from the middle to both sides, it is easier to open and has a larger opening angle. At the same time, it reduces the height of the entire product to the minimum and is not prone to jamming due to material limitations. In addition, it has a larger explosion venting opening angle and a higher explosion venting rate.

[0041] The structure of the limiting member 57 includes at least the following two types:

[0042] The first type is: the limiting member 57 is a nut that is screwed to the lower end of the explosion relief bolt 5. The outer diameter of the nut is larger than the inner diameter of the central hole 561, and the nut is in contact with the deformable washer 56. By the depth to which the nut is screwed into the lower end of the explosion relief bolt 5, it can better tighten the first cover relative to the flange bracket 1, thereby achieving stable locking.

[0043] The second type is: the limiting member 57 includes a baffle 571 sleeved on the lower end of the explosion relief bolt 5 and a nut 572 screwed on the lower end of the explosion relief bolt 5 and in contact with the baffle 571. The outer diameter of the baffle 571 is larger than the inner diameter of the central hole 561, and the baffle 571 is in contact with the deformable gasket 56. By the depth to which the nut is screwed into the lower end of the explosion relief bolt 5, it can better tighten the first cover relative to the flange bracket 1, thereby achieving stable locking.

[0044] In some embodiments, the explosion relief plate of the present invention further includes an explosion relief spring-off assembly 4. Preferably, the number of explosion relief spring-off assemblies 4 is at least two sets, which correspond to the explosion relief bolt module 500.

[0045] The explosion-proof spring-loaded assembly 4 is disposed between the flange bracket 1 and the first cover 2 and the second cover 3, and provides an outward elastic force to the first cover 2 and the second cover 3. When unlocked, the explosion-proof spring-loaded assembly 4 pushes the first cover 2 and the second cover 3 outward. That is to say, the first spring 42 and the second spring 43 provide an outward elastic force to the first cover 2 and the second cover 3, so as to more effectively drive the first cover 2 and the second cover 3 to open outward, thereby ensuring the stable pressure relief and avoiding the problem that the gas pressure cannot fully open the first cover 2 and the second cover 3 under their own weight, resulting in a small gap pressure relief channel between the first cover 2 and the second cover 3 and the flange bracket 1, and the pressure relief effect is poor.

[0046] The explosion relief spring assembly 4 includes a first spring 42 and a second spring 43 mounted on the fixed base 41. The upper ends of the first spring 42 and the second spring 43 press against the inner walls of the first cover 2 and the second cover 3 respectively to be compressed, thereby providing an outward elastic force to the first cover 2 and the second cover 3.

[0047] The fixed base 41 and the flange bracket 1 are fixedly connected by the second screw 410.

[0048] The first cover 2 and the second cover 3 are both mounted to the flange bracket 1 on the other side of the explosion relief bolt module via hinges 300, so that the first cover 2 and the second cover 3 can rotate smoothly relative to the flange bracket 1, thereby achieving stable and smooth opening and closing actions.

[0049] The second cover 3 has a window 30 through which the explosion relief bolt module 500 and the first spring 42 pass, allowing the explosion relief bolt 5 and adjusting ring 55 in the explosion relief bolt module 500 to pass smoothly through the window 30 and connect to the fixing base 41. The first spring 42 can also pass through the window 30 and contact the inner wall of the first cover 2, so that it can be compressed by the first cover 2 later, thereby generating an outward elastic force on the first cover 2. This facilitates a larger opening angle of the first cover 2 when it is opened, which is beneficial for pressure relief and explosion venting.

[0050] The function of the adjusting retaining ring 55 is to better or more conveniently form a movable connection between the explosion relief bolt 5 and the fixed seat 41.

[0051] Specifically, the fixed base 41 is provided with a movable groove 411. The adjusting ring 55 is installed in the movable groove 411 through the second pin 552 and can swing in the movable groove 411 with the second pin 552 as the axis. The adjusting ring 55 can also adjust its relative position relative to the second pin 552 to meet different installation requirements, ensuring that the adjusting ring 55 and the lower end of the explosion vent bolt 5 will not be offset relative to the explosion vent bolt 5, thereby ensuring the stability of the installation. It also allows the explosion vent bolt 5 to be better detached from the deformable gasket 56 later. The two ends of the second pin 552 are respectively placed in the transverse shaft groove 412 provided on the lower end surface of the fixed base 41.

[0052] The deformable gasket 56 is in the shape of a flat plate, which is the solution adopted in this embodiment; or, the deformable gasket 56 is in the shape of a downwardly raised spherical surface, which can better deform the central hole of the deformable gasket 56 and enlarge the hole diameter.

[0053] The explosion vent bolt 5 is movably installed in the mounting base 51, with its lower end extending beyond the lower end face of the mounting base 51. The mounting base 51 is secured to the inner wall of the first cover 2 by a first screw 511. The mounting base 51 is provided with a mounting groove 512. A universal joint 53 is provided on the upper outer side of the explosion vent bolt 5, and the bolt is movably installed in the mounting groove 512 in a horizontally swinging manner through the universal joint 53. This provides good redundancy, avoids misalignment problems, and eliminates the need for precise installation. It also avoids the problem of the explosion vent bolt 5 being difficult to detach from the center hole of the deformable gasket 56 due to tilted installation.

[0054] The bottom of the fixed base 41 is also provided with a protective cover 44, which covers the adjusting ring 55, the explosion vent bolt 5, the deformable washer 56, and the limiting member 57. It can prevent foreign objects from colliding with the adjusting ring 55, the explosion vent bolt 5, the deformable washer 56, and the limiting member 57, thus providing good protection.

[0055] The fixed base 41 is also provided with a relief groove 413 for accommodating the mounting base 51. When the first cover 2 is closed relative to the second cover 3, the mounting base 51 partially penetrates the relief groove 413, thereby achieving the purpose of avoiding the mounting base 51, making the first cover 2 more tightly closed relative to the second cover 3, and the structure more stable.

[0056] The first spring 42 and the second spring 43 are stably assembled with the fixed base 41, which effectively prevents the first spring 42 and the second spring 43 from detaching from the fixed base 41, ensuring the stability of the assembly structure, and enabling the first spring 42 and the second spring 43 to more stably push open the first cover 2 and the second cover 3 later. Specifically, the fixed base 41 is provided with a first groove 414 and a second groove 415 on both sides of the clearance groove 413. A first washer 421 is embedded between the two spring coils at the lower end of the first spring 42. The lower end of the first spring 42 is embedded in the first groove 414. The third screw 422 passes through the first washer 421 and is screwed to the bottom of the first groove 414, thereby achieving the purpose of locking the lower end of the first spring 42 to the bottom of the first groove 414. Its structure is simple, easy to install, and can effectively prevent the first spring 42 from detaching from the first groove 414. A second washer 431 is embedded between the two spring coils at the lowest end of the second spring 43. The lower end of the second spring 43 is embedded in the second groove 415. The fourth screw 432 passes through the second washer 431 and is screwed to the bottom of the second groove 415. This achieves the purpose of locking the lower end of the second spring 43 to the bottom of the second groove 415. Moreover, its structure is simple and easy to install, and it can effectively prevent the second spring 43 from detaching from the second groove 415.

[0057] In summary, this invention uses a pressure relief bolt module 500 to tighten and lock the first cover 2 and the second cover 3 relative to the flange bracket 1. This connection structure is stable and prevents the first cover 2 and the second cover 3 from accidentally opening relative to the flange bracket 1. Furthermore, if excessive pressure later pushes the first cover 2 and the second cover 3, it pulls the pressure relief bolt 5 outward, causing the limiting member 57 at the lower end of the pressure relief bolt 5 to disengage along the central hole 561 of the deformable gasket 56 and separate from the escape hole 551. After unlocking, the first cover 2 and the second cover 3 are pushed outward by pressure, allowing for more effective opening of the first cover 2 and the second cover 3, thus ensuring stable pressure relief. The large opening angle creates a larger pressure relief channel, resulting in a superior pressure relief effect. In particular, because the protective cover has a double-opening structure, and the first and second covers open from the middle to both sides, it is easier to open and has a larger opening angle. At the same time, it reduces the height of the entire product to the minimum and is not prone to jamming due to material limitations. In addition, it has a larger explosion venting opening angle and a higher explosion venting rate.

[0058] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A venting plate, characterized in that: It includes: Flange support (1); The first cover (2) and the second cover (3) are installed on the flange bracket (1) in a split manner and are in sealed contact with the flange bracket (1), and the edge of the first cover (2) presses against the edge of the second cover (3) to form a sealed contact; An explosion venting bolt module (500) is disposed between a first cover (2) and a flange bracket (1) and is used to lock the first cover (2) relative to the flange bracket (1); the explosion venting bolt module (500) includes a fixed seat (41) disposed on the flange bracket (1), an adjusting ring (55) disposed in the fixed seat (41) and having an escape hole (551), a deformable gasket (56) disposed in the adjusting ring (55) and covering the escape hole (551), an explosion venting bolt (5) connected to the first cover (2) and passing through the center hole (561) of the adjusting ring (55) and the deformable gasket (56), and a limiting member (57) disposed at the end of the explosion venting bolt (5) and pressing against the deformable gasket (56); When excessive pressure pushes the first cover (2) and / or the second cover (3) to pull the explosion relief bolt (5) upward, the limiting member (57) at the lower end of the explosion relief bolt (5) pulls the deformable gasket (56) to drive the central hole (561) of the deformable gasket (56) to deform and expand. The limiting member (57) comes out along the central hole (561) of the deformable gasket (56) and disengages from the escape hole (551), thus unlocking.

2. The explosion relief plate according to claim 1, characterized in that: The limiting member (57) is a nut that is screwed to the lower end of the explosion relief bolt (5), the outer diameter of which is larger than the inner diameter of the central hole (561), and the nut is in contact with the deformable washer (56); or, the limiting member (57) includes a baffle (571) sleeved on the lower end of the explosion relief bolt (5) and a nut (572) that is screwed to the lower end of the explosion relief bolt (5) and in contact with the baffle (571), the outer diameter of which is larger than the inner diameter of the central hole (561), and the baffle (571) is in contact with the deformable washer (56).

3. The explosion relief plate according to claim 1, characterized in that: It also includes a venting spring assembly (4), which is disposed between the flange bracket (1) and the first cover (2) and the second cover (3), and provides an outward elastic force to the first cover (2) and the second cover (3); when unlocked, the venting spring assembly (4) pushes the first cover (2) and the second cover (3) outward.

4. The explosion relief plate according to claim 3, characterized in that: The explosion relief spring assembly (4) includes a first spring (42) and a second spring (43) mounted on the fixed base (41). The upper ends of the first spring (42) and the second spring (43) press against the inner walls of the first cover (2) and the second cover (3) respectively to be compressed.

5. A venting plate according to any one of claims 1-4, characterized in that: The fixed base (41) is provided with a movable groove (411). The adjusting ring (55) is installed in the movable groove (411) through the second pin (552) and can swing in the movable groove (411) with the second pin (552) as the axis. The adjusting ring (55) can also adjust its relative position relative to the second pin (552). The two ends of the second pin (552) are respectively placed in the transverse shaft groove (412) provided on the lower end face of the fixed base (41).

6. A venting plate according to any one of claims 1-4, characterized in that: The deformable gasket (56) is flat; or, the deformable gasket (56) is a spherical shape with a downward bulge.

7. A venting plate according to any one of claims 1-4, characterized in that: The explosion relief bolt (5) is movably installed in the mounting base (51), and the lower end of the explosion relief bolt (5) extends out of the lower end face of the mounting base (51). The mounting base (51) is locked to the inner wall of the first cover (2) by the first screw (511). The mounting base (51) is provided with a mounting groove (512). A universal joint (53) is provided on the upper outer side of the explosion relief bolt (5), and it is movably installed in the mounting groove (512) in a horizontal swing manner through the universal joint (53).

8. A venting plate according to any one of claims 1-4, characterized in that: The bottom of the fixed base (41) is also provided with a protective cover (44), which covers the adjusting ring (55), the explosion relief bolt (5), the deformable gasket (56) and the limiting member (57). The inner side of the first cover (2) is fixed with a first frame (21) for increasing structural strength. The first frame (21) is provided with a plurality of spaced first mounting grooves (211). The first mounting grooves (211) are provided with first insulation cotton (22). The first frame (21) is also fixed with a first cover plate (23) to seal and limit the first insulation cotton (22). The inner side of the second cover (3) is fixed with a second frame (31) for increasing structural strength. The second frame (31) is provided with a number of spaced second mounting grooves (311). The second mounting grooves (311) are provided with second insulation cotton (32). The second frame (31) is also fixed with a second cover plate (33) to seal and limit the second insulation cotton (32).

9. A venting plate according to claim 7, characterized in that: The fixing seat (41) is also provided with a relief groove (413) for accommodating the mounting seat (51), and the fixing seat (41) is also provided with a first groove (414) and a second groove (415) on both sides of the relief groove (413). A first washer (421) is embedded between the two spring coils at the bottom of the first spring (42), and the lower end of the first spring (42) is embedded in the first groove (414). A third screw (422) passes through the first washer (421) and is screwed to the bottom of the first groove (414). A second washer (431) is embedded between the two spring coils at the bottom of the second spring (43), and the lower end of the second spring (43) is embedded in the second groove (415). A fourth screw (432) passes through the second washer (431) and is screwed to the bottom of the second groove (415).

10. A venting plate according to claim 3, characterized in that: The first cover (2) and the second cover (3) are both installed on the other side of the explosion relief bolt module via hinges (300) and flange brackets (1); a window (30) is provided on the second cover (3), through which the lower end of the explosion relief bolt module (500) and the first spring (42) pass; when the explosion relief plate is in use, the second cover (3) is first covered on the flange bracket (1), and the second cover (3) is in contact with the second spring (43); then the first cover (2) is covered relative to the flange bracket (1), and the edge of the first cover (2) presses against the edge of the second cover (3) and presses against the first spring (42), and the first cover (2) and the flange bracket (1) are connected by the explosion relief bolt module (500) so that after compressing the first spring (42) and the second spring (43), the first cover (2) and the second cover (3) are tightened relative to the flange bracket (1).

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