Main loop structure for vacuum circuit breaker

Abstract

The utility model discloses a major loop structure for a vacuum circuit breaker, and belongs to the technical field of vacuum circuit breakers, the major loop structure comprises an upper wire outlet seat, a vacuum arc-extinguishing chamber, a conductive flexible connector, a lower wire outlet seat and an insulating pull rod, the top of the vacuum arc-extinguishing chamber is provided with a heat dissipation frame, the heat dissipation frame is internally provided with a plurality of groups of heat pipes, and the heat pipes are filled with ethanol. A heat dissipation reinforcing frame is fixedly mounted at the top of the heat dissipation frame, the heat dissipation reinforcing frame comprises a plurality of groups of heat dissipation fins, the plurality of groups of heat dissipation fins are annularly arranged, and a temperature monitor is fixedly mounted on the outer wall of the vacuum arc-extinguishing chamber; when the vacuum circuit breaker works, generated heat is transmitted to the heat dissipation fins through the heat pipes, the multiple sets of heat dissipation fins are annularly arranged, the heat dissipation area is effectively increased, heat is dissipated to the surrounding environment in an air convection or radiation mode, the heat dissipation capacity of the vacuum circuit breaker is further improved, and the service life of the vacuum circuit breaker is prolonged. And the operation stability and reliability of the device are improved.

Description

Technical Field

[0001] This application relates to the technical field of vacuum circuit breakers, and particularly to a main circuit structure for a vacuum circuit breaker. Background Art

[0002] With the continuous development of the national economy, the power grid structure and load characteristics are becoming increasingly complex. To protect equipment and personal safety, higher requirements are put forward for power supply security and reliability. The most common circuit safety device is a vacuum circuit breaker.

[0003] The main circuit of a vacuum circuit breaker generates heat during equipment operation. When the overcurrent increases, the generated heat also increases. Therefore, a stronger heat dissipation structure is required.

[0004] For this reason, this application provides a main circuit structure for a vacuum circuit breaker. Utility Model Content

[0005] Aiming at the deficiencies of the prior art, this application provides a main circuit structure for a vacuum circuit breaker, which overcomes the deficiencies of the prior art and aims to solve the problem that the main circuit of a vacuum circuit breaker generates heat during equipment operation. When the overcurrent increases, the generated heat also increases. Therefore, a stronger heat dissipation structure is required.

[0006] To achieve the above object, this application provides the following technical solution: A main circuit structure for a vacuum circuit breaker includes an upper outgoing line seat, the upper outgoing line seat, a vacuum interrupter, a conductive flexible connection, a lower outgoing line seat, and an insulating pull rod. A heat dissipation frame is installed at the top of the vacuum interrupter. Several groups of heat pipes are arranged inside the heat dissipation frame. Ethanol is filled inside the heat pipes. A heat dissipation enhancement frame is fixedly installed at the top of the heat dissipation frame. The heat dissipation enhancement frame includes several groups of heat dissipation fins, and several groups of the heat dissipation fins are arranged in a circular pattern. A temperature monitor is fixedly installed on the outer wall of the vacuum interrupter.

[0007] By adopting the above technical solution, the upper outgoing line seat and the lower outgoing line seat in the vacuum circuit breaker serve as current input and output terminals respectively. The conductive flexible connection ensures smooth current flow. The vacuum interrupter extinguishes the arc during breaking. The insulating pull rod is used to operate the vacuum interrupter. Among them, several groups of heat pipes are arranged inside the heat dissipation frame, and the evaporation and condensation processes of ethanol inside the heat pipes are used to transfer heat. When the vacuum circuit breaker works, the generated heat is transferred to the heat dissipation fins through the heat pipes. Several groups of the heat dissipation fins are arranged in a circular pattern, effectively increasing the heat dissipation area, and are dissipated to the surrounding environment through air convection or radiation, thereby further enhancing the heat dissipation ability of the vacuum circuit breaker and improving the stability and reliability of the operation of this device.

[0008] As a preferred technical solution of the present application, a thread ring is provided on the outer wall of the heat pipe, and a thread groove matching the heat pipe is provided inside the heat dissipation rack.

[0009] By adopting the above technical solution, when the heat pipe is screwed into the thread groove of the heat dissipation rack, the connection between the two is realized, and at the same time, it is also convenient for the installation and maintenance of the heat pipe.

[0010] As a preferred technical solution of the present application, the material of the heat pipe is copper alloy.

[0011] By adopting the above technical solution, since copper alloy has excellent heat conduction performance, in a vacuum circuit breaker, using copper alloy material for the heat pipe can quickly and effectively transfer the heat generated inside to the heat dissipation fins, improving the heat dissipation efficiency.

[0012] As a preferred technical solution of the present application, the temperature monitor is in signal connection with an external wireless device.

[0013] By adopting the above technical solution, the temperature monitor is used to monitor the temperature of the vacuum interrupter inside the vacuum circuit breaker in real time, which helps to timely detect and handle potential overheating problems and improves the safety during use.

[0014] As a preferred technical solution of the present application, a graphene coating is applied on the outer surface of the heat pipe.

[0015] By adopting the above technical solution, since the graphene coating has excellent heat conduction performance, it can further improve the heat conduction efficiency between the heat pipe and the heat dissipation fins, thereby facilitating the faster transfer of the heat generated inside the heat pipe to the heat dissipation fins and further improving the heat dissipation efficiency.

[0016] As a preferred technical solution of the present application, fixing bolts are threadedly connected to the four corners of the heat dissipation rack.

[0017] By adopting the above technical solution, the heat dissipation rack is firmly fixed on the frame of the vacuum circuit breaker through the fixing bolts, and the threaded connection design facilitates the installation and disassembly of the fixing bolts, so that when the heat dissipation rack needs to be maintained, it is convenient to load and unload the heat dissipation rack.

[0018] As a preferred technical solution of the present application, a signal lamp is fixedly installed on the outer surface of the temperature monitor, and the signal lamp is in signal connection with the temperature monitor.

[0019] By adopting the above technical solution, when the temperature exceeds the threshold set by the temperature monitor, the signal lamp receives the signal and gives an alarm, which is beneficial to timely remind the staff to handle it.

[0020] As a preferred technical solution of the present application, the outer layer material of the conductive flexible connection is a copper-plated silver braided mesh.

[0021] By adopting the above technical solution, the copper-plated silver braided mesh can effectively reflect and absorb electromagnetic waves, which is beneficial to the stable transmission of current inside the conductive flexible connection.

[0022] Advantages of the present application:

[0023] 1. The upper outgoing line seat and the lower outgoing line seat serve as current input and output terminals respectively. The conductive flexible connection ensures the smooth flow of current. The vacuum interrupter extinguishes the arc during breaking. The insulating pull rod is used to operate the vacuum interrupter. Among them, several groups of heat pipes are built in the heat dissipation frame, and the heat is transferred by the evaporation and condensation process of ethanol in the heat pipes. When the vacuum circuit breaker works, the generated heat is transferred to the heat dissipation fins through the heat pipes. Several groups of the heat dissipation fins are arranged in a ring shape, effectively increasing the heat dissipation area, and are dissipated to the surrounding environment through air convection or radiation, thereby further enhancing the heat dissipation ability of the vacuum circuit breaker and improving the stability and reliability of the operation of this device.

[0024] 2. When the heat pipe is screwed into the threaded groove of the heat dissipation frame, the connection between the two is achieved, and at the same time, it is also convenient for the installation and maintenance of the heat pipe. Description of the drawings

[0025] Figure 1 is the overall structural schematic diagram of the present application;

[0026] Figure 2 is the sectional structural schematic diagram of the present application;

[0027] Figure 3 is the internal structural schematic diagram of the present application.

[0028] In the figure: 1, upper outgoing line seat; 3, vacuum interrupter; 4, conductive flexible connection; 5, lower outgoing line seat; 6, insulating pull rod; 7, heat dissipation frame; 701, heat pipe; 8, heat dissipation enhancement frame; 801, heat dissipation fin; 9, temperature monitor; 10, fixing bolt; 11, signal lamp. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0030] Refer to Figures 1-3, A main circuit structure for a vacuum circuit breaker, comprising an upper outgoing line seat 1, a vacuum interrupter 3, a conductive flexible connection 4, a lower outgoing line seat 5, and an insulating pull rod 6. A heat dissipation frame 7 is installed on the top of the vacuum interrupter 3. Inside the heat dissipation frame 7, there are several groups of heat pipes 701 filled with ethanol. On the top of the heat dissipation frame 7, a heat dissipation enhancement frame 8 is fixedly installed. The heat dissipation enhancement frame 8 includes several groups of heat dissipation fins 801, and the several groups of heat dissipation fins 801 are arranged in a circular pattern. A temperature monitor 9 is fixedly installed on the outer wall of the vacuum interrupter 3; the heat pipes 701 are made of copper alloy.

[0031] The upper outgoing line seat 1 and the lower outgoing line seat 5 in the vacuum circuit breaker serve as current input and output terminals respectively. The conductive flexible connection 4 ensures smooth current flow. The vacuum interrupter 3 extinguishes the arc during breaking, and the insulating pull rod 6 is used to operate the vacuum interrupter 3. Among them, several groups of heat pipes 701 are built into the heat dissipation frame 7, and the evaporation and condensation processes of ethanol in the heat pipes 701 are utilized to transfer heat. When the vacuum circuit breaker is working, the generated heat is transferred to the heat dissipation fins 801 through the heat pipes 701. The several groups of heat dissipation fins 801 are arranged in a circular pattern, effectively increasing the heat dissipation area, and are dissipated to the surrounding environment through air convection or radiation, thereby further enhancing the heat dissipation ability of the vacuum circuit breaker and improving the stability and reliability of the operation of this device; due to the excellent thermal conductivity of copper alloy, in the vacuum circuit breaker, using copper alloy for the heat pipes 701 can quickly and effectively transfer the internally generated heat to the heat dissipation fins 801, improving the heat dissipation efficiency.

[0032] Refer to Figures 1-3 , Threaded rings are provided on the outer walls of the heat pipes 701, and threaded grooves matching the heat pipes 701 are opened inside the heat dissipation frame 7; the temperature monitor 9 is signal-connected to external wireless devices; fixing bolts 10 are threadedly connected to the four corners of the heat dissipation frame 7;

[0033] When the heat pipes 701 are screwed into the threaded grooves of the heat dissipation frame 7, the connection between the two is achieved, and at the same time, it is also convenient for the installation and maintenance of the heat pipes 701; the temperature monitor 9 is used to monitor the temperature of the vacuum interrupter 3 inside the vacuum circuit breaker in real time, which helps to promptly discover and handle potential overheating problems and improves the safety during use; the fixing bolts 10 firmly fix the heat dissipation frame 7 on the frame of the vacuum circuit breaker, and the threaded connection design facilitates the installation and disassembly of the fixing bolts 10, so that when the heat dissipation frame 7 needs to be maintained, it is convenient to load and unload the heat dissipation frame 7.

[0034] Refer to Figures 1-3, the outer surface of the heat pipe 701 is coated with a graphene coating; a signal lamp 11 is fixedly installed on the outer surface of the temperature monitor 9, and the signal lamp 11 is signal-connected to the temperature monitor 9; due to the excellent heat conduction performance of the graphene coating, it can further improve the heat conduction efficiency between the heat pipe 701 and the heat dissipation fin 801, thereby facilitating the faster transfer of the heat generated inside the heat pipe 701 to the heat dissipation fin 801, and further improving the heat dissipation efficiency; when the temperature exceeds the threshold set by the temperature monitor 9, the signal lamp 11 emits an alarm after receiving the signal, which is conducive to timely reminding the staff to handle it.

[0035] Refer to Figure 1 , the outer layer material of the flexible conductive connection 4 is a copper-plated silver braided mesh; the copper-plated silver braided mesh can effectively reflect and absorb electromagnetic waves, thereby facilitating the stable transmission of the current inside the flexible conductive connection 4.

[0036] Working principle: The upper outgoing line seat 1 and the lower outgoing line seat 5 serve as current input and output terminals respectively. The flexible conductive connection 4 ensures the smooth flow of current. The vacuum interrupter 3 extinguishes the arc during breaking. The insulating pull rod 6 is used to operate the vacuum interrupter 3. Among them, the heat dissipation frame 7 is internally provided with several groups of heat pipes 701, and the evaporation and condensation processes of ethanol inside the heat pipes 701 are used to transfer heat. When the vacuum circuit breaker works, the generated heat is transferred to the heat dissipation fins 801 through the heat pipes 701. Several groups of heat dissipation fins 801 are arranged in a ring, effectively increasing the heat dissipation area, and are dissipated to the surrounding environment through air convection or radiation, thereby further enhancing the heat dissipation ability of the vacuum circuit breaker and improving the stability and reliability of the operation of this device. When the heat pipe 701 is screwed into the threaded groove of the heat dissipation frame 7, the connection between the two is achieved, and at the same time, it is also convenient for the installation and maintenance of the heat pipe 701;

[0037] Among them, due to the excellent heat conduction performance of the copper alloy, in the vacuum circuit breaker, using the copper alloy material for the heat pipe 701 can quickly and effectively transfer the heat generated inside to the heat dissipation fin 801, improving the heat dissipation efficiency. The temperature monitor 9 is used to monitor the temperature of the vacuum interrupter 3 inside the vacuum circuit breaker in real time, which helps to promptly discover and handle potential overheating problems and improves the safety during use;

[0038] At the same time, due to the excellent heat conduction performance of the graphene coating, it can further improve the heat conduction efficiency between the heat pipe 701 and the heat dissipation fin 801, thereby facilitating the faster transfer of the heat generated inside the heat pipe 701 to the heat dissipation fin 801, and further improving the heat dissipation efficiency; the heat dissipation frame 7 is firmly fixed to the frame of the vacuum circuit breaker through the fixing bolts 10, and at the same time, the threaded connection design facilitates the installation and disassembly of the fixing bolts 10, so that when the heat dissipation frame 7 needs to be maintained, it is convenient to load and unload the heat dissipation frame 7;

[0039] In addition, when the temperature exceeds the threshold set by the temperature monitor 9, the signal lamp 11 emits an alarm after receiving the signal, which is conducive to timely reminding the staff to handle it. The copper-plated silver braided mesh can effectively reflect and absorb electromagnetic waves, thereby facilitating the stable transmission of current in the conductive flexible connection 4.

[0040] The foregoing are only the preferred embodiments of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A main circuit structure for a vacuum circuit breaker, comprising an upper outgoing line seat (1), a vacuum arc extinguishing chamber (3), a conductive flexible connection (4), a lower outgoing line seat (5), and an insulating pull rod (6), characterized in that, A heat dissipation frame (7) is installed at the top of the vacuum interrupter (3). A number of groups of heat pipes (701) are arranged inside the heat dissipation frame (7). Ethanol is filled inside the heat pipes (701). A heat dissipation enhancement frame (8) is fixedly installed at the top of the heat dissipation frame (7). The heat dissipation enhancement frame (8) includes a number of groups of heat dissipation fins (801), and the number of groups of the heat dissipation fins (801) are arranged in a circular pattern. A temperature monitor (9) is fixedly installed on the outer wall of the vacuum interrupter (3).

2. The main circuit structure for a vacuum circuit breaker according to claim 1, characterized in that Threaded rings are arranged on the outer wall of the heat pipe (701), and threaded grooves matching the heat pipe (701) are formed inside the heat dissipation frame (7).

3. The main circuit structure for a vacuum circuit breaker according to claim 2, characterized in that, The heat pipe (701) is made of copper alloy.

4. A main circuit structure for a vacuum circuit breaker according to claim 1, characterized in that, The temperature monitor (9) is in signal connection with an external wireless device.

5. A main circuit structure for a vacuum circuit breaker according to claim 1, characterized in that, A graphene coating is coated on the outer surface of the heat pipe (701).

6. The main circuit structure for a vacuum circuit breaker according to claim 1, characterized in that, Fixing bolts (10) are threadedly connected to the four corners of the heat dissipation frame (7).

7. The main circuit structure for a vacuum circuit breaker according to claim 1, characterized in that, A signal lamp (11) is fixedly installed on the outer surface of the temperature monitor (9), and the signal lamp (11) is in signal connection with the temperature monitor (9).

8. The main circuit structure for a vacuum circuit breaker according to claim 1, characterized in that, The outer layer material of the conductive flexible connection (4) is copper-plated silver braided mesh.

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