A high-voltage circuit breaker with an emergency self-destroying open circuit structure

Abstract

The application discloses a high-voltage circuit breaker with an emergency self-destruction open circuit structure, comprising a controller, a box body, a circuit breaker main body, a fire extinguishing mechanism and three self-destruction open circuit structures, wherein the circuit breaker main body is arranged in the box body, the self-destruction open circuit structure comprises a box body and a high-voltage fuse, the box body is arranged outside the box body, the high-voltage fuses are all arranged in the box body, and the high-voltage fuses are connected in series with one phase of the circuit breaker main body; the fire extinguishing mechanism is connected with each box body, respectively, and each box body is provided with a first flame sensor; the controller is electrically connected with the fire extinguishing mechanism and each first flame sensor, respectively, and is used for controlling the fire extinguishing mechanism to extinguish fire in the box body according to first temperature data. In the technical scheme, the first flame sensor in the box body is matched with the controller, the controller can automatically drive the fire extinguishing mechanism to extinguish fire in the ignited box body at the first time when the high temperature or the open flame is generated due to the melting of the fuse, the fault current is cut off, and the fire hazard caused by the melting arc is fundamentally eliminated.

Description

Technical Field

[0001] This invention relates to the field of high-voltage circuit breaker technology, and in particular to a high-voltage circuit breaker with an emergency self-destruct opening structure. Background Technology

[0002] High-voltage circuit breakers are among the most important and frequently used primary equipment in power systems, undertaking the dual mission of control and protection. They not only need to reliably interrupt no-load and load currents during normal operation, but more importantly, when a line fault generates a short-circuit current, they must quickly and reliably isolate the fault location, disconnecting the faulty section from the power grid, thereby ensuring the safe and stable operation of the entire power system. The performance of high-voltage circuit breakers directly affects the normal and safe operation of the power grid; the failure of a single circuit breaker can affect the power supply of a region or even a province. Therefore, the reliability, breaking capacity, and intelligence level of high-voltage circuit breakers have always been core issues in the development of power system equipment technology.

[0003] When the load is too high, the circuit breaker itself cannot disconnect in time. The overload current will continue to flow through the main contacts of the circuit breaker, generating intense heat, which may eventually lead to contact welding, arc extinguishing chamber rupture, transformer burnout, or even fire. Summary of the Invention

[0004] The main objective of this invention is to provide a high-voltage circuit breaker with an emergency self-destruct opening structure, which aims to solve the problem that existing circuit breakers cannot disconnect in a timely manner.

[0005] To achieve the above objectives, the technical solution proposed by this invention is as follows: A high-voltage circuit breaker with an emergency self-destruct mechanism includes a controller, a housing, a circuit breaker body, a fire extinguishing mechanism, and three self-destruct structures. The circuit breaker body is housed within the housing. Each self-destruct structure includes a housing and a high-voltage fuse. The housing is located on the outside of the housing, and the high-voltage fuses are all located within the housings. Each high-voltage fuse is connected in series with one phase of the circuit breaker body. Each self-destruct structure is used to automatically disconnect the high-voltage fuse within its structure when the voltage value of any phase is greater than or equal to a preset value, thereby disconnecting the circuit breaker body from the load. The fire extinguishing mechanism is connected to each housing. Each housing is equipped with a first flame sensor, which detects a first temperature data within its housing. The controller is electrically connected to the fire extinguishing mechanism and each of the first flame sensors, and is used to control the fire extinguishing mechanism to extinguish a fire within the housing based on the first temperature data.

[0006] Preferably, the fire extinguishing mechanism includes a liquid storage tank, a main electric control valve, a main pipeline, and three first connecting pipelines. The liquid storage tank is located on the top side of the housing and is used to store perfluorohexanone liquid. Each of the first connecting pipelines is connected to one of the housings, and the end of each first connecting pipeline away from the housing is connected to one end of the main pipeline. The other end of the main pipeline is connected to the liquid storage tank. The main electric control valve is located on the main pipeline. Each of the first connecting pipelines is equipped with a first sub-electric control valve. The controller is electrically connected to the main electric control valve and each of the first sub-electric control valves, and the controller is used to control the main electric control valve and each of the first sub-electric control valves according to the first temperature data.

[0007] Preferably, the fire extinguishing mechanism further includes a second connecting pipe and a second sub-electric control valve. One end of the second connecting pipe is connected to the main pipe, and the other end of the second connecting pipe passes through the housing and faces the circuit breaker body. The second sub-electric control valve is disposed in the second connecting pipe. A second flame sensor is disposed in the housing, and the second flame sensor is used to detect a second temperature data in the housing. The controller is electrically connected to the second flame sensor and the second sub-electric control valve respectively, and the controller is used to control the main electric control valve and the second sub-electric control valve respectively according to the second temperature data.

[0008] Preferably, a lifting mechanism is also provided on the outside of the enclosure. The lifting mechanism includes an electrically controlled slide, a track, and a connecting frame. The track is vertically fixed to the wall surface. The electrically controlled slide is slidably connected to the track. The connecting frame is located on the side of the electrically controlled slide opposite to the track. The electrically controlled slide is driven to connect to the enclosure through the connecting frame. A controller is electrically connected to the electrically controlled slide. The controller is used to control the electrically controlled slide to drive the enclosure to rise along the track to a first preset height. The controller is also used to control the electrically controlled slide to drive the enclosure to descend along the track to a second preset height when the enclosure is being maintained.

[0009] Preferably, an isolation net cover is provided at the top of the track, and an accommodating space is formed inside the isolation net cover. An inlet and outlet are formed on the side of the isolation net cover facing the bottom of the track. The electrically controlled slide is used to drive the box into the isolation net cover through the connecting frame.

[0010] Preferably, the connecting frame includes a connecting plate, a base plate, and a bottom mesh plate. The electrically controlled slide is driven and connected to the connecting plate. The connecting plate is arranged vertically, and the bottom end of the connecting plate is connected to the base plate. The base plate is arranged horizontally, and the bottom mesh plate is provided on the bottom side of the base plate. The housing is located on the side of the base plate away from the bottom mesh plate. The bottom mesh plate is used to fit the inlet and outlet and close the inlet and outlet.

[0011] Preferably, a rain shield is provided on the side of the isolation netting away from the inlet and outlet.

[0012] Preferably, a first camera and a projection lamp are provided on the side of the connecting frame away from the housing. The controller is electrically connected to the first camera and the projection lamp respectively. The controller is used to control the projection lamp to project a light spot onto a preset position on the ground when the housing is raised to the first preset height. The first camera is used to identify facial information located in the preset position and send it to the controller. When the facial information matches the preset information, the controller is used to control the electrically controlled slide to drive the housing to descend to the second preset height.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects: When any phase voltage is over-voltaged, the corresponding high-voltage fuse immediately self-destructs, physically disconnecting that phase from the load side. This achieves precise phase isolation of the faulty phase, preventing the entire circuit breaker from burning out due to a single-phase fault. By placing the high-voltage fuse in an independent box outside the main circuit breaker enclosure, the fuse is physically isolated from the main circuit breaker body. If the fuse explodes due to overvoltage, the fragments and arc are confined within the box, preventing them from affecting the main enclosure. In conjunction with the first flame sensor inside the box, the controller can automatically activate the fire extinguishing mechanism to target and extinguish the fire in the box the moment the fuse melts and generates high temperature or open flame. This not only cuts off the fault current but also fundamentally eliminates the fire hazard caused by the arc from the fuse melting. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of an embodiment of a high-voltage circuit breaker with an emergency self-destruct opening structure according to the present invention; Figure 2 This is a side view of the structure of the enclosure.

[0016] Explanation of icon numbers: 1. Box body; 2. Fire extinguishing mechanism; 21. Liquid storage tank; 22. Main electric control valve; 23. Main pipeline; 24. First connecting pipeline; 25. First sub-electric control valve; 26. Second connecting pipeline; 27. Second sub-electric control valve; 3. Self-destructing open-circuit structure; 4. Lifting mechanism; 41. Projector lamp; 42. Track; 43. First camera; 44. Base plate; 45. Bottom mesh plate; 46. Isolation mesh cover; 47. Buzzer; The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0019] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0022] This invention proposes a high-voltage circuit breaker with an emergency self-destruct opening structure.

[0023] like Figure 1 and Figure 2 The high-voltage circuit breaker shown includes a controller, a housing 1, a circuit breaker body, a fire extinguishing mechanism 2, and three self-destruction structures 3. The circuit breaker body is housed inside the housing 1. Each self-destruction structure 3 includes a housing and a high-voltage fuse. The housing is located outside the housing 1, and the high-voltage fuses are all located inside the housing. Each high-voltage fuse is connected in series with one phase of the circuit breaker body. Each self-destruction structure 3 is used to automatically disconnect the high-voltage fuse inside the self-destruction structure 3 when the voltage value of any phase is greater than or equal to a preset value, thus disconnecting the circuit breaker body from the load. The fire extinguishing mechanism 2 is connected to each housing. Each housing is equipped with a first flame sensor, which is used to detect the first temperature data inside the housing. The controller is electrically connected to the fire extinguishing mechanism 2 and each first flame sensor. The controller is used to control the fire extinguishing mechanism 2 to extinguish the fire inside the housing based on the first temperature data.

[0024] When any phase voltage is over-voltaged, the corresponding high-voltage fuse immediately self-destructs and blows, physically disconnecting that phase from the load side, achieving precise isolation of the faulty phase and preventing the entire circuit breaker from burning out due to a single-phase fault. By placing the high-voltage fuse in an independent box outside enclosure 1, the fuse is physically isolated from the main circuit breaker body. If the fuse blows and explodes due to overvoltage, the fragments and arc are confined within the box and will not affect the main enclosure 1. In conjunction with the first flame sensor inside the box, the controller can automatically drive the fire extinguishing mechanism 2 to extinguish the fire in the box at the first moment when the fuse blows and generates high temperature or open flame, not only cutting off the fault current but also fundamentally eliminating the fire hazard caused by the arc from the blown fuse.

[0025] The fire extinguishing mechanism 2 includes a liquid storage tank 21, a main electric control valve 22, a main pipeline 23, and three first connecting pipelines 24. The liquid storage tank 21 is located on the top side of the housing 1 and is used to store perfluorohexanone liquid. Each first connecting pipeline 24 is connected to one of the housings, and the end of each first connecting pipeline 24 away from the housing is connected to one end of the main pipeline 23. The other end of the main pipeline 23 is connected to the liquid storage tank 21. The main electric control valve 22 is located on the main pipeline 23. Each first connecting pipeline 24 is equipped with a first sub-electric control valve 25. The controller is electrically connected to the main electric control valve 22 and each first sub-electric control valve 25 respectively, and the controller is used to control the main electric control valve 22 and each first sub-electric control valve 25 according to the first temperature data.

[0026] A tree-like fire extinguishing agent delivery network was constructed, consisting of a main pipeline 23 and three first connecting pipelines 24. The main electrical control valve 22 controls the overall on / off state, while each first sub-electric control valve 25 controls the branch on / off state of each housing. Perfluorohexanone liquid is used as the extinguishing medium; it has strong insulation properties, leaves no residue, and will not corrode or short-circuit other structures such as fuse mounting bases within the housing. The controller can activate only the sub-electric control valve of the housing with an abnormal temperature, achieving precise point-to-point spraying, greatly improving extinguishing efficiency while reducing extinguishing agent waste and avoiding unnecessary downtime caused by accidental spraying to other normal housings.

[0027] The fire extinguishing mechanism 2 also includes a second connecting pipe 26 and a second sub-electric control valve 27. One end of the second connecting pipe 26 is connected to the main pipe 23, and the other end of the second connecting pipe 26 passes through the housing 1 and faces the circuit breaker body. The second sub-electric control valve 27 is installed in the second connecting pipe 26. A second flame sensor is installed inside the housing 1 to detect the second temperature data inside the housing 1. The controller is electrically connected to the second flame sensor and the second sub-electric control valve 27 respectively. The controller is used to control the main electric control valve 22 and the second sub-electric control valve 27 respectively according to the second temperature data.

[0028] A separate second connecting pipe 26 is led out from the main pipeline, directly connecting to the circuit breaker body inside enclosure 1, adding a second line of fire protection to enclosure 1. When the circuit breaker body itself (rather than the external enclosure) catches fire due to insulation breakdown or mechanical failure, the second flame sensor detects the high temperature inside enclosure 1, and the controller also opens the main electrical control valve 22 and the second sub-electric control valve 27, spraying perfluorohexanone directly onto the surface of the circuit breaker body. The fire extinguishing system simultaneously covers both the enclosure (fuse side) and enclosure 1 (circuit breaker body side), achieving full-range fire monitoring and suppression of the high-voltage circuit breaker, eliminating blind spots in protection.

[0029] A lifting mechanism 4 is also provided on the outside of the housing 1. The lifting mechanism 4 includes an electrically controlled slide, a rail 42 and a connecting frame. The rail 42 is fixed vertically to the wall surface. The electrically controlled slide is slidably connected to the rail 42. The connecting frame is located on the side of the electrically controlled slide away from the rail 42. The electrically controlled slide is driven to connect to the housing 1 through the connecting frame. The controller is electrically connected to the electrically controlled slide. The controller is used to control the electrically controlled slide to drive the housing 1 to rise along the rail 42 to a first preset height. The controller is also used to control the electrically controlled slide to drive the housing 1 to descend along the rail 42 to a second preset height when the housing 1 is being maintained.

[0030] A lifting mechanism 4, consisting of an electrically controlled slide, a track 42, and a connecting frame, transforms the originally fixed enclosure 1 into a movable one. When enclosure 1 is operating normally, the controller raises it to a first preset height, keeping live parts away from personnel on the ground, meeting high-voltage electrical safety clearance requirements, and preventing accidental contact by unauthorized personnel or small animals. During maintenance: When enclosure 1 is being maintained, the controller lowers it to a lower second preset height, allowing maintenance personnel to safely and easily inspect and repair the circuit breaker from the ground without climbing ladders. This significantly reduces the risk of falls from heights and greatly improves the convenience and safety of daily inspections and emergency repairs.

[0031] Specifically, the first preset height is set to 2.8 meters to 4.5 meters, preferably 3.5 meters.

[0032] The lower limit of this height range (≥2.8 meters) is higher than the maximum height that an average adult can reach when standing with their hand raised (approximately 2.5 meters), and is also greater than the safe clearance between the exposed live parts of the equipment and the ground (the safe clearance is usually 0.2 meters to 1.0 meters). Combined with the grounding protection of the enclosure 1, it can ensure that even if unrelated personnel walk under the enclosure 1, they cannot directly touch or climb the live enclosure 1.

[0033] This height range (preferably 3.5 meters) is based on the conventional fixed height of the pre-installed power grid side inlet terminals and load side outlet terminals on the wall (usually embedded in the wall at a height of 3.0 to 4.0 meters). When the enclosure 1 is raised to this height, the inlet and outlet sleeves at the top of the enclosure 1 are at the same horizontal level or slightly lower than the external wiring terminals fixed on the wall. At this time, the flexible copper busbars or flexible cables used for connection are in a natural or slightly sag state, which will not be pulled and broken due to excessive height, nor will they be piled up and bent due to excessive low height, ensuring contact pressure and heat dissipation space during high current transmission, and ensuring normal connection between the power grid and the load. Specifically, the second preset height is 0.5 meters to 0.8 meters.

[0034] The second preset height must ensure that when workers are standing on the ground performing maintenance operations, the distance between their body (including the tools they carry) and the live parts inside the enclosure 1 is not less than the aforementioned unshielded safety distance. When the bottom of enclosure 1 is lowered to 0.5 to 0.8 meters, the live parts such as wiring terminals are approximately 1.2 to 1.5 meters above the ground, which, combined with insulation measures, can meet the safety requirements of the equipment.

[0035] An isolation net cover 46 is installed at the top of the track 42, forming an accommodating space. An inlet / outlet is formed on the side of the isolation net cover 46 facing the bottom of the track 42. An electrically controlled slide is used to drive the housing 1 into the isolation net cover 46 via a connecting frame. A fixed isolation net cover 46 at the top of the track 42 forms a top protective space. When the housing 1 rises to the first preset height, the electrically controlled slide drives the housing 1 completely into the isolation net cover 46. As a physical barrier, the isolation net cover 46 effectively prevents external objects such as falling objects, bird nests, and spliced ​​branches from contacting the housing 1 during energized operation. It also provides some guidance and protection during wind and rain, ensuring the stable operation of the external power grid and load connection lines under severe weather conditions.

[0036] The connecting frame includes a connecting plate, a base plate 44, and a bottom mesh plate 45. The connecting plate is connected to the electrically controlled slide. The connecting plate is set vertically, and the bottom end of the connecting plate is connected to the base plate 44. The base plate 44 is set horizontally, and the bottom mesh plate 45 is set on the bottom side of the base plate 44. The box body 1 is set on the side of the base plate 44 away from the bottom mesh plate 45. The bottom mesh plate 45 is used to fit the inlet and outlet and close the inlet and outlet.

[0037] The enclosure 1 is fixed to the base plate 44, and the bottom mesh plate 45 rises and falls with the enclosure 1. When the enclosure 1 rises into the isolation mesh cover 46, the bottom mesh plate 45 fits precisely to cover the inlet and outlet at the bottom of the mesh cover. The lifting base plate 44 and the bottom mesh plate 45 seal the inlet and outlet in one unit, eliminating the need for an additional power door mechanism. After the enclosure 1 is raised, the bottom mesh plate 45 completely seals the inlet and outlet, making the isolation mesh cover 46 a six-sided enclosed metal cage, providing all-around protection for the internal equipment, and its structure is extremely simple and reliable. A rain shield is installed on the side of the isolation mesh cover 46 opposite to the inlet and outlet.

[0038] Specifically, a buzzer 47 is also installed on the top of the isolation net cover 46. The controller is electrically connected to the buzzer 47 and is used to control the buzzer 47 to sound during a preset time period. The buzzer 47 on the isolation net cover 46 is used to scare away birds and prevent them from nesting between the isolation net cover 46 and the rain shield.

[0039] A first camera 43 and a projection lamp 41 are installed on the side of the connecting frame away from the housing 1. The controller is electrically connected to the first camera 43 and the projection lamp 41 respectively. The controller is used to control the projection lamp 41 to project a light spot onto a preset position on the ground when the housing 1 is raised to a first preset height. The first camera 43 is used to identify facial information located in the preset position and send it to the controller. When the facial information matches the preset information, the controller is used to control the electric sliding block to drive the housing 1 to descend to a second preset height.

[0040] Specifically, the bottom mesh plate 45 is ring-shaped and is arranged around the camera and the projection lamp 41.

[0041] After enclosure 1 is raised, projection lamp 41 projects a light spot onto a preset position on the ground, clearly informing maintenance personnel that they must stand in the preset position for facial recognition. When enclosure 1 needs to be lowered for maintenance, projection lamp 41 guides personnel to stand in the preset position, and the camera captures facial information and verifies whether the personnel are authorized. Only after successful identity verification will the controller allow enclosure 1 to descend.

[0042] Specifically, the high-voltage circuit breaker with emergency self-destruct opening structure 3 also includes a handheld terminal and a communicator. The communicator is located in the enclosure 1, and the controller is electrically connected to the communicator. The communicator is signal-connected to the handheld terminal. The handheld terminal is used to send a descent signal via the communicator. The controller is used to control the projection lamp 41 to send a light spot to a preset position based on the descent signal. The handheld terminal is either a mobile phone app or a dedicated controller. Through the cooperation of the handheld terminal and the projection lamp 41, it is possible to prevent unauthorized personnel from triggering the raising and lowering of the enclosure 1. Only when an employee sends a descent signal using the handheld terminal, and the employee is within the preset position and passes facial recognition, can the controller control the lowering of the enclosure 1. This effectively prevents accidental activation by unauthorized personnel and ensures that professional personnel are present during the raising and lowering of the enclosure 1 to prevent injury to others during the process.

[0043] Specifically, a control button is also provided on one side of the housing 1 on the base plate 44. The control button is electrically connected to the controller and is used to send control signals to the controller. The handheld end is used to send a lifting signal through the communicator. The controller is used to control the electric sliding block to drive the housing 1 to rise and fall according to the control signal and the lifting signal.

[0044] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A high-voltage circuit breaker with an emergency self-destruct opening structure, characterized in that, The system includes a controller, a housing, a circuit breaker body, a fire extinguishing mechanism, and three self-destruct mechanisms. The circuit breaker body is housed within the housing. Each self-destruct mechanism includes a housing and a high-voltage fuse. The housing is located on the outside of the housing, while the high-voltage fuses are all located within the housing. Each high-voltage fuse is connected in series with one phase of the circuit breaker body. Each self-destruct mechanism is used to automatically disconnect the high-voltage fuse within its respective self-destruct mechanism when the voltage value of any phase is greater than or equal to a preset value, thus disconnecting the circuit breaker body from the load. The fire extinguishing mechanism is connected to each of the housings. Each housing is equipped with a first flame sensor, which detects a first temperature data within its housing. The controller is electrically connected to the fire extinguishing mechanism and each of the first flame sensors, and is used to control the fire extinguishing mechanism to extinguish the fire within the housing based on the first temperature data.

2. A high-voltage circuit breaker with an emergency self-destruct opening structure according to claim 1, characterized in that, The fire extinguishing mechanism includes a liquid storage tank, a main electric control valve, a main pipeline, and three first connecting pipelines. The liquid storage tank is located on the top side of the housing and is used to store perfluorohexanone liquid. Each of the first connecting pipelines is connected to one of the housings, and the end of each first connecting pipeline away from the housing is connected to one end of the main pipeline. The other end of the main pipeline is connected to the liquid storage tank. The main electric control valve is located on the main pipeline. Each of the first connecting pipelines is equipped with a first sub-electric control valve. The controller is electrically connected to the main electric control valve and each of the first sub-electric control valves, and the controller is used to control the main electric control valve and each of the first sub-electric control valves according to the first temperature data.

3. A high-voltage circuit breaker with an emergency self-destruct opening structure according to claim 2, characterized in that, The fire extinguishing mechanism further includes a second connecting pipe and a second sub-electric control valve. One end of the second connecting pipe is connected to the main pipe, and the other end of the second connecting pipe passes through the housing and faces the circuit breaker body. The second sub-electric control valve is disposed in the second connecting pipe. A second flame sensor is disposed in the housing and is used to detect a second temperature data inside the housing. The controller is electrically connected to the second flame sensor and the second sub-electric control valve respectively, and the controller is used to control the main electric control valve and the second sub-electric control valve respectively according to the second temperature data.

4. A high-voltage circuit breaker with an emergency self-destruct opening structure according to any one of claims 1-3, characterized in that, A lifting mechanism is also provided on the outside of the enclosure. The lifting mechanism includes an electrically controlled slide, a rail, and a connecting frame. The rail is fixed vertically to the wall surface. The electrically controlled slide is slidably connected to the rail. The connecting frame is located on the side of the electrically controlled slide away from the rail. The electrically controlled slide is driven to connect to the enclosure through the connecting frame. A controller is electrically connected to the electrically controlled slide. The controller is used to control the electrically controlled slide to drive the enclosure to rise along the rail to a first preset height. The controller is also used to control the electrically controlled slide to drive the enclosure to descend along the rail to a second preset height when the enclosure is being maintained.

5. A high-voltage circuit breaker with an emergency self-destruct opening structure according to claim 4, characterized in that, An isolation net cover is installed at the top of the track, and an accommodating space is formed inside the isolation net cover. An inlet and outlet are formed on the side of the isolation net cover facing the bottom of the track. The electrically controlled slide is used to drive the box into the isolation net cover through the connecting frame.

6. A high-voltage circuit breaker with an emergency self-destruct opening structure according to claim 5, characterized in that, The connecting frame includes a connecting plate, a base plate, and a bottom mesh plate. The electrically controlled slide is driven and connected to the connecting plate. The connecting plate is arranged vertically, and the bottom end of the connecting plate is connected to the base plate. The base plate is arranged horizontally, and the bottom mesh plate is provided on the bottom side of the base plate. The housing is located on the side of the base plate away from the bottom mesh plate. The bottom mesh plate is used to fit the inlet and outlet and close the inlet and outlet.

7. A high-voltage circuit breaker with an emergency self-destruct opening structure according to claim 5, characterized in that, A rain shield is installed on the side of the isolation netting away from the entrance and exit.

8. A high-voltage circuit breaker with an emergency self-destruct opening structure according to claim 4, characterized in that, A first camera and a projection lamp are installed on the side of the connecting frame away from the box body. The controller is electrically connected to the first camera and the projection lamp respectively. The controller is used to control the projection lamp to project a light spot onto a preset position on the ground when the box body is raised to the first preset height. The first camera is used to identify facial information located in the preset position and send it to the controller; the controller is used to control the electronically controlled slide to drive the box to descend to the second preset height when the facial information matches the preset information.

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