Solid-sealed polar pole of vacuum circuit breaker

Abstract

The utility model relates to the technical field of electrical equipment, and provides a solid-sealed polar pole of a vacuum circuit breaker, which is not easy to overheat and has longer service life, and comprises an insulating shell and a vacuum cavity arranged in the insulating shell, a lead-in column of which one end penetrates through the vacuum cavity is embedded in one side of the insulating shell, and the other end of the lead-in column penetrates through the vacuum cavity. A lead-out column with one end penetrating through the vacuum cavity is further embedded in one side of the insulating shell, a heat dissipation ring is fixedly connected to the outer wall of the insulating shell, and heat generated by the insulating shell is dissipated into external air through the heat dissipation ring.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a sealed pole of a vacuum circuit breaker. Background Art

[0002] The sealed pole is formed by embedding the vacuum interrupter and the conductive parts related to the circuit breaker into easily solidified solid insulating materials such as epoxy resin or thermoplastic materials, so that the entire circuit breaker becomes an integral component. The sealed pole is modularly designed with a simple structure and fewer detachable parts, thus having high reliability. At the same time, it has extremely high insulating rod capacity and reduces the size of the circuit breaker, which is conducive to the miniaturization of electrical equipment such as switch cabinets.

[0003] Although the above-mentioned existing technology can solve the corresponding technical problems, it still has certain defects: during the use of the existing sealed pole, due to the extremely large resistance of the sealed pole, when the current passes through, part of the electrical energy will be converted into heat energy. When a large current is input, the sealed pole will generate a high amount of heat. After working for a long time, the solid insulating material is prone to melt due to overheating, thereby reducing its support for the conductive parts, which not only affects the service life of the sealed pole, but also easily causes the conductive parts to contact each other and lose their insulation performance. Utility Model Content

[0004] The utility model aims to provide a sealed pole of a vacuum circuit breaker which is not prone to overheating and has a long service life in view of the defects and shortcomings of the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sealed pole of a vacuum circuit breaker, comprising an insulating shell and a vacuum chamber arranged in the insulating shell, an inlet column with one end penetrating the vacuum chamber is embedded on one side of the insulating shell, and an outlet column with one end penetrating the vacuum chamber is also embedded on one side of the insulating shell, and a heat dissipation ring is fixedly connected to the outer wall of the insulating shell, and the heat generated by the insulating shell is dissipated to the outside air through the heat dissipation ring.

[0006] A further improvement is that a mounting block is provided below the insulating shell.

[0007] A further improvement is that the heat dissipation ring comprises a copper heat conducting ring fixedly arranged on the outer wall of the insulating shell and a radiating tube embedded in the outer wall of the heat conducting ring, and the radiating tube is filled with liquid ethanol.

[0008] A further improvement is that an insulating layer is also provided on the outer wall of the diverging tube.

[0009] A further improvement is that: a plurality of heat dissipation cavities are provided on the insulating layer.

[0010] A further improvement is that: the outer wall of the insulating layer is also provided with a plurality of enhanced diverging pipes, and a rising steam pipe is provided between the enhanced diverging pipes and the diverging pipes.

[0011] A further improvement is that the enhanced diverging pipe includes a cooling pipe body arranged on the outer wall of the insulating layer and connected to the end of the rising steam pipe, and a plurality of heat sinks arranged on the outer wall of the cooling pipe body.

[0012] A further improvement is that: the inner wall of the cooling tube body is provided with a plurality of guide blocks.

[0013] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: when the utility model is in use, the heat generated by the use of the sealed pole can be introduced into the dissipation tube through the provided heat-conducting ring, and the heat can be quickly dissipated through the larger heat-conducting ring and the stronger thermal conductivity of copper metal. At the same time, part of the heat is input into the dissipation tube to make the liquid ethanol evaporate quickly, taking away a large amount of heat, and making the evaporated gas enter the enhanced dissipation tube and then condense and reflux, thereby repeatedly ensuring that the temperature of the sealed pole is low during operation, avoiding the heat melting caused by excessive temperature of the sealed pole, ensuring the insulation effect, and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 This is a schematic diagram of the structure of the front cross section of the solid-sealed pole of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the heat dissipation ring of the utility model in a top view of the cross section;

[0017] Figure 3 It is a structural schematic diagram of a front view cross section of a heat dissipation ring of the utility model;

[0018] Figure 4 It is a structural schematic diagram of a front view cross section of the enhanced diverging pipe of the utility model. DETAILED DESCRIPTION

[0019] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0020] See also Figure 1-4As shown, the technical solution adopted in this specific embodiment is: a sealed pole of a vacuum circuit breaker, comprising an insulating shell 1 and a vacuum chamber 2 arranged in the insulating shell 1, an introduction column 3 with one end penetrating the vacuum chamber 2 is embedded on one side of the insulating shell 1, and an outlet column 4 with one end penetrating the vacuum chamber 2 is also embedded on one side of the insulating shell 1, a heat dissipation ring 5 is fixedly connected to the outer wall of the insulating shell 1, and the heat dissipation ring 5 comprises a copper heat conducting ring 51 fixedly arranged on the outer wall of the insulating shell 1 and a radiating pipe 52 embedded in the outer wall of the heat conducting ring 51, and the radiating pipe 52 is filled with liquid ethanol, and the heat generated by the insulating shell 1 is dissipated to the outside air through the heat dissipation ring 5. When in use, the circuit is connected through the introduction column 3 and the outlet column 4, and the vacuum Cavity 2 is used to avoid sparks generated during the process of connecting or disconnecting the circuit and to provide insulation. When in use, the high resistance will cause the insulating shell 1 to generate a large amount of heat. At this time, the heat will be absorbed by the copper heat conducting ring 51 and begin to dissipate the heat into the air through a larger area. At the same time, part of the heat will be introduced into the dissipation tube 52 to increase the internal temperature. At the same time, the dissipation tube 52 can also dissipate the heat synchronously. When the temperature is too high, the liquid ethanol filled inside will be heated to evaporate, thereby quickly taking away a large amount of heat and re-condensing after the temperature drops. In this way, the heat generated by the insulating shell 1 can be quickly dissipated, the working temperature can be reduced, and the hot melt phenomenon can be avoided, thereby ensuring the insulation effect and extending the service life;

[0021] A mounting block 6 is also provided below the insulating housing 1, which facilitates easier installation and fixation of the sealed pole;

[0022] The outer wall of the diverging tube 52 is also provided with an insulating layer 53, which is helpful to avoid current breakdown and improve safety;

[0023] The insulating layer 53 is provided with a plurality of heat dissipation cavities 55. In this embodiment, eight heat dissipation cavities 55 are provided, which is beneficial for increasing the contact area between the heat dissipation ring 5 and the air through the heat dissipation cavities 55, thereby reducing the heat dissipation side effect of the insulating layer 53 on the heat dissipation ring 5;

[0024] The outer wall of the insulating layer 53 is also provided with a plurality of enhanced diverging tubes 54, eight of which are provided in this embodiment. The enhanced diverging tube 54 includes a cooling tube body 541 provided on the outer wall of the insulating layer 53 and connected to the end of the rising steam tube 56, and a plurality of heat sinks 542 provided on the outer wall of the cooling tube body 541, six of which are provided in this embodiment. A rising steam tube 56 is provided between the enhanced diverging tube 54 and the diverging tube 52. When the liquid ethanol evaporates, the evaporated gas will enter the enhanced diverging tube 54 through the rising steam tube 56 and The heat is simultaneously brought into the enhanced dissipation pipe 54, and at this time, the cooling pipe body 541 can be in contact with the steam. The cooling pipe body 541 can be made of copper, which has good thermal conductivity. After the steam enters, the heat is absorbed by the cooling pipe body 541 in large quantities and dissipated into the air through its outer surface. At the same time, part of the heat is also sent into the heat sink 542, thereby greatly increasing the contact area with the air, making the heat dissipation efficiency higher, thereby allowing the heat carried by the steam to be quickly volatilized into the air, allowing the steam to quickly condense and reflux, greatly enhancing the heat dissipation performance;

[0025] The inner wall of the cooling tube body 541 is provided with a plurality of guide blocks 543. In this embodiment, five guide blocks 543 are provided, which is beneficial to increase the contact area of ​​the steam, accelerate the heat conduction speed, and guide the steam to reflux better after condensation.

[0026] Working principle of the utility model: When the utility model is used, the circuit is connected through the introduction column 3 and the outlet column 4, and the vacuum chamber 2 is cooperated to avoid electric sparks generated during the circuit connection or disconnection process and provide insulation. When in use, the higher resistance will cause the insulating shell 1 to generate a large amount of heat. At this time, the heat will be absorbed by the copper heat conductive ring 51, and the heat will be guided and dissipated into the air through a larger area. At the same time, part of the heat will be introduced into the dissipation tube 52 to increase its internal temperature. At the same time, the dissipation tube 52 can also dissipate heat synchronously. When the temperature is too high, the liquid ethanol filled inside it will be heated to evaporate, and then quickly take away a large amount of heat, and re-condense after the temperature drops, thereby quickly dissipating the heat generated by the insulating shell 1, reducing its working temperature, avoiding hot melting, ensuring the insulation effect and extending the service life.

[0027] The utility model is intended to protect the structure of the product. The model of each component is not the content of the utility model, and it is also a known technology. Any component on the market that can achieve the above functions of the utility model can be used as a choice. Therefore, the model and other parameters of the component are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of various components.

[0028] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A sealed pole of a vacuum circuit breaker, comprising an insulating shell (1) and a vacuum chamber (2) arranged in the insulating shell (1), an introduction column (3) having one end penetrating the vacuum chamber (2) being embedded on one side of the insulating shell (1), and an outlet column (4) having one end penetrating the vacuum chamber (2) being embedded on one side of the insulating shell (1), characterized in that: A heat dissipation ring (5) is fixedly connected to the outer wall of the insulating shell (1), and the heat generated by the insulating shell (1) is dissipated into the outside air through the heat dissipation ring (5).

2. The sealed pole of a vacuum circuit breaker according to claim 1, characterized in that: A mounting block (6) is also provided below the insulating housing (1).

3. The sealed pole of a vacuum circuit breaker according to claim 1, characterized in that: The heat dissipation ring (5) comprises a copper heat conducting ring (51) fixedly arranged on the outer wall of the insulating housing (1) and a radiating tube (52) embedded in the outer wall of the heat conducting ring (51), wherein the radiating tube (52) is filled with liquid ethanol.

4. The sealed pole of a vacuum circuit breaker according to claim 3, characterized in that: The outer wall of the diverging tube (52) is also provided with an insulating layer (53).

5. The sealed pole of a vacuum circuit breaker according to claim 4, characterized in that: A plurality of heat dissipation cavities (55) are provided on the insulating layer (53).

6. The sealed pole of a vacuum circuit breaker according to claim 4, characterized in that: The outer wall of the insulating layer (53) is further provided with a plurality of enhanced diverging pipes (54), and a rising steam pipe (56) is provided between the enhanced diverging pipe (54) and the diverging pipe (52).

7. The sealed pole of a vacuum circuit breaker according to claim 6, characterized in that: The enhanced diverging pipe (54) comprises a cooling pipe body (541) arranged on the outer wall of the insulating layer (53) and connected to the end of the rising steam pipe (56), and a plurality of cooling fins (542) arranged on the outer wall of the cooling pipe body (541).

8. The sealed pole of a vacuum circuit breaker according to claim 7, characterized in that: The inner wall of the cooling tube body (541) is provided with a plurality of guide blocks (543).

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