Visualizing high voltage switchgear and its pressure relief assembly

Abstract

This invention specifically relates to a visualized high-voltage switchgear and its pressure relief component, belonging to the field of high-voltage switchgear application technology. It includes a high-voltage installation cabinet with adjustable linkage compartments at both ends. Ventilation louvers are connected to both sides of the high-voltage installation cabinet, and angle adjustment components are installed at the lower ends of the ventilation louvers. A ventilation adjustment frame is installed inside the adjustable linkage compartment. Ventilation mounting grooves are designed on both sides of the high-voltage installation cabinet, and pressure relief components are installed inside the ventilation mounting grooves. By using the angle adjustment components in conjunction with the ventilation louvers, the ventilation effect on both sides of the device can be flexibly adjusted. The pressure relief component in this device can release sudden high pressure inside the device, and when the pressure relief component is retracted, it pushes the ventilation louvers to close tightly, forming a sealed space inside the device. This prevents continuous combustion in the event of an arcing fault, reducing fault losses.

Description

Technical Field

[0001] This invention specifically relates to a visualized high-voltage switchgear and its pressure relief components, belonging to the field of high-voltage switchgear application technology. Background Technology

[0002] High-voltage switchgear refers to a complete set of high-voltage power distribution equipment consisting of high-voltage electrical equipment such as high-voltage circuit breakers, high-voltage load switches, high-voltage contactors, high-voltage fuses, high-voltage disconnect switches, high-voltage grounding switches, high-voltage instrument transformers and station service transformers, as well as related control, measurement, protection and regulation devices, internal connecting parts, auxiliary parts, enclosures and supporting parts.

[0003] A pressure relief device for a high-voltage switchgear and a high-voltage switchgear are disclosed in application number CN202311557246.4. The pressure relief device includes a pressure relief box and a protective enclosure. The pressure relief box includes a first housing and a pressure relief cover, with a first mesh opening on the cover. Inside the first housing, along the gas release direction, a flat mesh plate, an arc-blocking plate, and a fan are arranged sequentially. In the event of an arcing fault, the flat mesh plate decomposes the gas pressure, and the arc-blocking plate changes the direction of gas pressure release. During this process, the fan draws out the gas, accelerating its passage through the flat mesh plate and the arc-blocking plate, thereby opening the pressure relief cover and completely releasing the gas. This device improves pressure relief efficiency while reducing outlet pressure, ensuring the safety of equipment and maintenance personnel. Orienting the opening of the protective enclosure away from the maintenance passage further enhances safety. During normal operation, the fan and the first mesh opening on the pressure relief cover reduce the internal temperature of the switchgear.

[0004] The aforementioned device improves the efficiency of gas release and increases the safety of equipment use. However, it cannot adjust the connection area between the switch cabinet and the outside world. Furthermore, when an arcing failure occurs, the device will continue to burn inside. After depressurization, the existing device will increase the connection area between itself and the outside air, increasing the oxygen supply inside the device, which will fuel the flame and amplify the losses caused by the arcing failure. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a visualized high-voltage switchgear and its pressure relief components, so as to achieve rapid pressure relief, timely air isolation, and reduce losses caused by arcing faults.

[0006] The present invention achieves the above-mentioned objectives through the following technical solution: a visual high-voltage switchgear and its pressure relief component, comprising a high-voltage installation cabinet, wherein adjustable linkage compartments are provided at the upper and lower ends of the high-voltage installation cabinet, and ventilated louvers are connected to both sides of the high-voltage installation cabinet. An angle adjustment component is installed at the lower end of the ventilated louvers. A ventilated adjustment frame is installed inside the adjustable linkage compartment, and a transparent protective door is hinged to the outside of the ventilated adjustment frame. An intelligent control panel is installed inside the transparent protective door. A pressure relief mounting groove is designed on both sides of the high-voltage installation cabinet, and a pressure relief component is installed inside the pressure relief mounting groove.

[0007] Preferably, in order to adjust the ventilation effect on both sides of the device, positioning transition holes are evenly provided at both ends of the adjustment linkage chamber, and a positioning transition shaft is designed on one side of the ventilation louver. The positioning transition shaft and the positioning transition hole are rotatably connected to each other. Adjustment linkage shafts are provided at both ends of the other side of the ventilation louver. A synchronous linkage plate is installed on the outside of the adjustment linkage shaft. Linkage transition holes are evenly provided inside the synchronous linkage plate. The linkage transition holes and the adjustment linkage shaft are rotatably connected to each other. The ventilation louver unfolds outward of the device, and the unfolding directions of the ventilation louvers on both sides of the device are opposite.

[0008] Preferably, in order to control the unfolding angle of the ventilated louvers, the angle adjustment component includes an angle adjustment motor. The lower end of the adjustment linkage chamber is provided with an angle adjustment power groove. The angle adjustment motor is embedded in the angle adjustment power groove. A rotating linkage rod is fixedly installed at the output end of the angle adjustment motor. Linkage telescopic grooves are provided at both ends of the rotating linkage rod. A telescopic adjustment rod is slidably engaged inside the linkage telescopic groove. A connecting spring is fixedly installed at one end of the telescopic adjustment rod. The other end of the connecting spring is fixedly connected to the linkage telescopic groove. A rotating connecting hole is provided at the other end of the telescopic adjustment rod. A movable connecting shaft is rotatably engaged inside the rotating connecting hole. The upper surface of the movable connecting shaft is fixedly welded to the synchronous linkage plate.

[0009] Preferably, to enhance the closing effect of the breathable louvers, a sealing locking groove is provided on the upper side of one end of the telescopic adjustment rod, and a locking connection hole is designed on the upper side of one end of the linkage telescopic groove. A locking block is slidably engaged inside the locking connection hole, and an inclined guide surface is designed on the lower end of the locking block. The locking block can slide and engage with the sealing locking groove. An operation limit plate is fixedly welded to the upper end of the locking block, and a locking spring is fixedly installed on the lower surface of the operation limit plate. The lower end of the locking spring is fixedly connected to the rotating linkage rod. An unlocking electric telescopic rod is fixedly installed on one side of the rotating linkage rod, and a lifting limit rod is fixedly welded to the upper surface of the rotating linkage rod. A lifting limit hole is provided inside the operation limit plate, and the lifting limit hole and the lifting limit rod slide and engage with each other.

[0010] Preferably, in order to control the air permeability on both sides of the device, the air permeability adjustment frame includes a sealing baffle, the outer side of the adjustment linkage chamber is designed with a telescopic locking hole, the sealing baffle is slidably locked into the inside of the telescopic locking hole, the inside of the adjustment linkage chamber is evenly provided with venting holes, the inside of the sealing baffle is evenly provided with output connection holes, the output connection holes are staggered between the venting holes, and a tension spring is evenly fixedly installed at one end of the sealing baffle.

[0011] Preferably, to improve the convenience of device control, a positioning and mounting frame is fixedly welded to the other end of the sealing baffle. A protective inner ring is designed on the inner side of the positioning and mounting frame. The protective inner ring is slidably engaged with the high-voltage installation cabinet. One side of the transparent protective door is hinged to the positioning and mounting frame. Transparent tempered glass is inlaid inside the transparent protective door. A venting operation handle is designed on one side of the transparent protective door. The intelligent control panel is inlaid in the center of the transparent protective door. A convenient operation handle is fixedly installed on the other side of the transparent protective door.

[0012] A pressure relief assembly for a visual high-voltage switchgear includes a return spring, which is fixedly installed inside the venting mounting groove. A pressure relief limit rod is fixedly installed at the other end of the return spring, and a protective mounting frame is fixedly installed at the other end of the pressure relief limit rod. Waterproof and ventilated holes are evenly distributed inside the protective mounting frame.

[0013] Preferably, in order to facilitate the rapid closure of the ventilated louvers, positioning springs are fixedly installed at the four internal corners of the protective mounting frame, and a sealing push frame is slidably engaged inside the protective mounting frame. The sealing push frame and the positioning springs are fixedly connected to each other, and the sealing push frame and the high-pressure mounting frame are slidably engaged to each other.

[0014] The beneficial effects of this invention are as follows: By using the angle adjustment component in conjunction with the ventilated louvers, users can flexibly adjust the ventilation effect on both sides of the device as needed, improving the convenience and adaptability of the device. The ventilated adjustment frame allows users to perform pressure relief before turning on the device, enabling the internal hot airflow to be quickly discharged to the outside from all sides, improving the safety of the staff. The pressure relief component in this device can release the high pressure that suddenly appears inside the device, and when the pressure relief component is retracted, it pushes the ventilated louvers to close tightly, forming a sealed space inside the device, preventing continuous combustion when an arc fault occurs, and reducing the loss from the fault. Attached Figure Description

[0015] Figure 1 This is a side sectional view of the present invention. Figure 2 This is a schematic diagram of the closed structure of the present invention; Figure 3 This is a schematic diagram of the unfolded structure of the present invention; Figure 4 This is a schematic diagram of the main cross-sectional structure of the present invention; Figure 5 This is a schematic diagram of the high-voltage installation cabinet in this invention; Figure 6 This is a schematic diagram of the angle adjustment component in this invention; Figure 7 for Figure 6 A magnified view of a section at point A in the middle; Figure 8 This is a schematic diagram of the structure of the breathable adjustment frame in this invention; Figure 9 This is a structural connection diagram of the high-voltage installation cabinet in this invention; Figure 10 This is a schematic diagram of the pressure relief component in this invention.

[0016] In the diagram: 1. High-voltage installation cabinet; 2. Adjustment linkage compartment; 3. Ventilation louver; 301. Adjustment linkage shaft; 302. Synchronous linkage plate; 4. Angle adjustment component; 401. Angle adjustment motor; 402. Rotary linkage rod; 403. Telescopic adjustment rod; 404. Connecting spring; 405. Locking block; 406. Operating limit plate; 407. Locking spring; 408. Unlocking electric telescopic rod; 5. Ventilation adjustment frame; 501. Sealing baffle; 502. Tension spring; 503. Positioning installation frame; 504. Protective inner ring; 6. Transparent protective door; 601. Transparent tempered glass; 602. Air release operating handle; 603. Convenient operating handle; 7. Intelligent control panel; 8. Pressure relief assembly; 801. Return spring; 802. Pressure relief limit rod; 803. Protective installation frame; 804. Positioning spring; 805. Sealing push frame. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-10 As shown, a visualized high-voltage switchgear includes a high-voltage mounting cabinet 1, which serves as the main body of the entire device. The high-voltage mounting cabinet 1 is used to install high-voltage electrical equipment. Adjustable linkage compartments 2 are located at the top and bottom of the high-voltage mounting cabinet 1 to regulate the temperature, humidity, or air pressure inside the cabinet, ensuring the high-voltage equipment operates under optimal conditions. Ventilation louvers 3 are connected to both sides of the high-voltage mounting cabinet 1 to allow air circulation, aiding in heat dissipation and maintaining fresh air inside the cabinet. An angle adjustment component 4 is installed at the lower end of the ventilation louvers 3, allowing operators to adjust the angle of the louvers as needed to optimize airflow or prevent rainwater intrusion. A ventilation adjustment frame 5 is installed inside the adjustment linkage compartment 2. Adjustable openings or grilles are used to further control the amount of air exchange between the inside and outside of the cabinet. A transparent protective door 6 is hinged to the outside of the ventilation adjustment frame 5, providing operators with a window to observe the status of the equipment inside the cabinet, while protecting them from the risk of direct contact with high-voltage equipment. An intelligent control panel 7 is installed inside the transparent protective door 6, allowing operators to monitor the environmental parameters inside the cabinet and control the equipment in the linkage compartment 2 through a touch interface. The high-voltage installation cabinet 1 is designed with venting installation slots on both sides, and pressure relief components 8 are installed inside the venting installation slots to quickly release pressure when the pressure inside the cabinet rises abnormally, protecting the equipment from damage and enhancing the safety of operators.

[0019] The two ends of the adjusting linkage chamber 2 are evenly provided with positioning transition holes. One side of the ventilated louver 3 is designed with a positioning transition shaft, which is rotatably connected to the positioning transition hole. The other side of the ventilated louver 3 is provided with adjusting linkage shafts 301 at both ends. A synchronous linkage plate 302 is installed on the outer side of the adjusting linkage shaft 301. The synchronous linkage plate 302 has evenly provided linkage transition holes inside, which are rotatably connected to the adjusting linkage shaft 301. The ventilated louver 3 unfolds outwards from the device, and the unfolding directions of the ventilated louvers 3 on both sides of the device are opposite. Through the precise connection design between the adjusting linkage chamber 2 and the ventilated louver 3, operation... Personnel can flexibly adjust the angle of the ventilation louvers 3 to control the amount and direction of air entering the high-voltage installation cabinet 1. This design not only improves the ventilation efficiency of the equipment, but also helps to quickly adjust the environmental conditions inside the cabinet when necessary, such as reducing the temperature or expelling harmful gases. The use of the synchronous linkage plate 302 ensures the synchronicity and coordination of the movement of the ventilation louvers 3 on both sides, avoiding the imbalance problem caused by unilateral operation. In actual operation, operators may need to adjust the angle of the ventilation louvers 3 through the intelligent control panel 7 or manual device according to the operating status of the equipment inside the cabinet and the external environmental conditions to achieve the best environmental control and energy efficiency performance.

[0020] The angle adjustment component 4 includes an angle adjustment motor 401. An angle adjustment power groove is provided at the lower end of the adjustment linkage chamber 2. The angle adjustment motor 401 is embedded inside the angle adjustment power groove. A rotating linkage rod 402 is fixedly installed at the output end of the angle adjustment motor 401. Linkage telescopic grooves are provided at both ends of the rotating linkage rod 402. A telescopic adjustment rod 403 is slidably engaged inside the linkage telescopic groove. A connecting spring 404 is fixedly installed at one end of the telescopic adjustment rod 403. The other end of the connecting spring 404 is fixedly connected to the linkage telescopic groove. A rotating connecting hole is provided at the other end of the telescopic adjustment rod 403. A movable connecting shaft is rotatably engaged inside the rotating connecting hole. The upper surface of the movable connecting shaft is fixedly welded to the synchronous linkage plate 302. A sealing locking groove is provided on the upper side of one end of the telescopic adjustment rod 403. The telescopic groove is located at one end... The upper side is designed with a locking connection hole, and a locking block 405 is slidably engaged inside the locking connection hole. The lower end of the locking block 405 is designed with an inclined guide surface. The locking block 405 can slide and engage with the sealing locking groove. An operation limit plate 406 is fixedly welded to the upper end of the locking block 405. A locking spring 407 is fixedly installed on the lower surface of the operation limit plate 406. The lower end of the locking spring 407 is fixedly connected to the rotating linkage rod 402. An unlocking electric telescopic rod 408 is fixedly installed on one side of the rotating linkage rod 402. A lifting limit rod is fixedly welded to the upper surface of the rotating linkage rod 402. A lifting limit hole is opened inside the operation limit plate 406. The lifting limit hole and the lifting limit rod slide and engage with each other. When the angle adjustment motor 401 is started, it will drive the rotating linkage rod 402 to rotate.

[0021] The rotation of the rotating linkage rod 402 causes the telescopic adjustment rod 403 to slide within the linkage telescopic groove, and pushes the synchronous linkage plate 302 through the moving connecting shaft, thereby realizing the angle adjustment of the ventilation louver 3. During the adjustment process, the locking mechanism ensures that the telescopic adjustment rod 403 remains stable in a specific position. When unlocking is required, the unlocking electric telescopic rod 408 pushes the operating limit plate 406, causing the locking block 405 to slide out of the sealed locking groove, thereby realizing unlocking. The locking spring 407 and the connecting spring 404 provide the necessary restoring force and stability throughout the process, ensuring the accuracy and reliability of the adjustment. The cooperation between the lifting limit rod and the lifting limit hole ensures the stable movement of the operating limit plate 406 in the vertical direction, avoiding unnecessary shaking or offset.

[0022] The ventilated adjustment frame 5 includes a sealing baffle 501. The outer side of the adjustment linkage chamber 2 is designed with telescopic locking holes. The sealing baffle 501 is slidably engaged with the inside of the telescopic locking holes. Vent holes are evenly distributed inside the adjustment linkage chamber 2. Output connection holes are evenly distributed inside the sealing baffle 501, and are staggered among the vent holes. A tension spring 502 is evenly fixedly installed at one end of the sealing baffle 501. A positioning mounting frame 503 is fixedly welded to the other end of the sealing baffle 501. A protective inner ring 504 is designed on the inner side of the positioning mounting frame 503. The protective inner ring 504 is slidably engaged with the high-voltage installation cabinet 1. One side of the transparent protective door 6 is hinged to the positioning mounting frame 503. Transparent tempered glass 601 is inlaid inside the transparent protective door 6. One side of the transparent protective door 6 is designed with… The transparent protective door 6 has a venting handle 602 and an intelligent control panel 7 embedded in the center of the transparent protective door 6. A convenient operating handle 603 is fixedly installed on the other side of the transparent protective door 6. The operator can adjust the position of the sealing baffle 501 through the intelligent control panel 7 or the venting handle 602, thereby controlling the connection between the venting hole and the output connection hole, and thus adjusting the airflow exchange inside and outside the cabinet. The tension spring 502 may be used to automatically restore the sealing baffle 501 to the initial position after adjustment, or to provide a reset force after unlocking. The transparent protective door 6 is connected to the high-voltage installation cabinet 1 through the positioning mounting frame 503 and the protective inner ring 504, which provides an observation window and ensures the safety of operation. The convenient operating handle 603 allows the operator to quickly open or close the transparent protective door 6 when needed.

[0023] The pressure relief assembly 8 includes a return spring 801, which is fixedly installed inside the venting mounting groove. A pressure relief limiting rod 802 is fixedly installed at one end of each return spring 801, and a protective mounting frame 803 is fixedly installed at the other end of each pressure relief limiting rod 802. The protective mounting frame 803 has evenly spaced waterproof and breathable holes inside. Positioning springs 804 are fixedly installed at each of the four corners inside the protective mounting frame 803. A sealing push frame 805 is slidably engaged inside the protective mounting frame 803. The sealing push frame 805 and the positioning springs 804 are fixedly connected to each other, and the sealing push frame 805 is slidably engaged with the high-pressure mounting frame. When the internal air pressure suddenly increases, the internal air pressure pushes the protective mounting frame 803 outwards rapidly. Lateral movement creates a gap around the protective mounting frame 803 and the high-voltage mounting cabinet 1, allowing the internal airflow to be quickly discharged to the outside, achieving a pressure relief function. This causes the internal air pressure of the device to drop rapidly. Under the pulling force of the return spring 801, the protective mounting frame 803 quickly rebounds and comes into contact with the high-voltage mounting cabinet 1, stopping the contact. Under the action of inertia, the internal sealing push frame 805 continues to move rapidly inward. The sealing push frame 805 pushes the ventilated louver 3 to rotate inward, making the ventilated louver 3 completely sealed. It also pushes the telescopic adjustment rod 403 to make the sealing locking groove and the locking block 405 slide and engage with each other, improving the sealing effect of the device, reducing the air content inside the device, and reducing the losses caused by internal combustion hazards.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A visualized high-voltage switchgear, comprising a high-voltage mounting cabinet (1), characterized in that: The high-voltage installation cabinet (1) is provided with adjustment linkage compartments (2) at both the top and bottom. The high-voltage installation cabinet (1) is connected to the two sides with ventilated louvers (3). An angle adjustment component (4) is installed at the lower end of the ventilated louvers (3). A ventilated adjustment frame (5) is installed inside the adjustment linkage compartment (2). A transparent protective door (6) is hinged to the outside of the ventilated adjustment frame (5). An intelligent control panel (7) is installed inside the transparent protective door (6). A venting installation groove is designed on both sides of the high-voltage installation cabinet (1). A pressure relief component (8) is installed inside the venting installation groove.

2. The visualized high-voltage switchgear as described in claim 1, characterized in that: The two ends of the adjustment linkage chamber (2) are evenly provided with positioning transition holes. One side of the breathable louver (3) is designed with a positioning transition shaft. The positioning transition shaft and the positioning transition hole are rotatably connected to each other. The two ends of the other side of the breathable louver (3) are provided with adjustment linkage shafts (301). A synchronous linkage plate (302) is installed on the outside of the adjustment linkage shaft (301). The inside of the synchronous linkage plate (302) is evenly provided with linkage transition holes. The linkage transition holes and the adjustment linkage shaft (301) are rotatably connected to each other. The breathable louver (3) unfolds to the outside of the device, and the unfolding directions of the breathable louver (3) on both sides of the device are opposite.

3. The visualized high-voltage switchgear as described in claim 2, characterized in that: The angle adjustment component (4) includes an angle adjustment motor (401). An angle adjustment power groove is provided at the lower end of the adjustment linkage chamber (2). The angle adjustment motor (401) is embedded in the inside of the angle adjustment power groove. A rotating linkage rod (402) is fixedly installed at the output end of the angle adjustment motor (401). Linkage telescopic grooves are provided at both ends of the rotating linkage rod (402). A telescopic adjustment rod (403) is slidably engaged inside the linkage telescopic groove. A connecting spring (404) is fixedly installed at one end of the telescopic adjustment rod (403). The other end of the connecting spring (404) is fixedly connected to the linkage telescopic groove. A rotating connecting hole is provided at the other end of the telescopic adjustment rod (403). A movable connecting shaft is rotatably engaged inside the rotating connecting hole. The upper surface of the movable connecting shaft is fixedly welded to the synchronous linkage plate (302).

4. The visualized high-voltage switchgear as described in claim 3, characterized in that: A sealing locking groove is provided on the upper side of one end of the telescopic adjustment rod (403). A locking connection hole is designed on the upper side of one end of the linkage telescopic groove. A locking block (405) is slidably engaged inside the locking connection hole. An inclined guide surface is designed on the lower end of the locking block (405). The locking block (405) can slide and engage with the sealing locking groove. An operation limit plate (406) is fixedly welded to the upper end of the locking block (405). A locking spring (407) is fixedly installed on the lower surface of the operation limit plate (406). The lower end of the locking spring (407) is fixedly connected to the rotating linkage rod (402). An unlocking electric telescopic rod (408) is fixedly installed on one side of the rotating linkage rod (402). A lifting limit rod is fixedly welded to the upper surface of the rotating linkage rod (402). A lifting limit hole is provided inside the operation limit plate (406). The lifting limit hole and the lifting limit rod slide and engage with each other.

5. The visualized high-voltage switchgear as described in claim 4, characterized in that: The ventilated adjustment frame (5) includes a sealing baffle (501). The outer side of the adjustment linkage chamber (2) is designed with telescopic locking holes. The sealing baffle (501) is slidably locked inside the telescopic locking holes. The interior of the adjustment linkage chamber (2) is uniformly provided with venting holes. The interior of the sealing baffle (501) is uniformly provided with output connection holes. The output connection holes are staggered between the venting holes. A tension spring (502) is uniformly fixedly installed at one end of the sealing baffle (501).

6. The visualized high-voltage switchgear as described in claim 5, characterized in that: The other end of the sealing baffle (501) is fixedly welded with a positioning mounting frame (503). The inner side of the positioning mounting frame (503) is designed with a protective inner ring (504). The protective inner ring (504) is slidably engaged with the high-voltage installation cabinet (1). One side of the transparent protective door (6) is hinged to the positioning mounting frame (503). The transparent protective door (6) is inlaid with transparent tempered glass (601). One side of the transparent protective door (6) is designed with a venting operation handle (602). The intelligent control panel (7) is inlaid in the center of the transparent protective door (6). The other side of the transparent protective door (6) is fixedly installed with a convenient operation handle (603).

7. A pressure relief assembly, characterized in that: The pressure relief assembly (8) includes a return spring (801), which is fixedly installed inside the venting mounting groove. The other end of the return spring (801) is fixedly installed with a pressure relief limiting rod (802), and the other end of the pressure relief limiting rod (802) is fixedly installed with a protective mounting frame (803). The interior of the protective mounting frame (803) is evenly provided with waterproof and breathable holes.

8. A pressure relief assembly as described in claim 7, characterized in that: Positioning springs (804) are fixedly installed at the four corners inside the protective mounting frame (803). A sealing push frame (805) is slidably engaged inside the protective mounting frame (803). The sealing push frame (805) and the positioning springs (804) are fixedly connected to each other. The sealing push frame (805) and the high-pressure mounting frame are slidably engaged to each other.

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