Insulation frame and vacuum circuit breaker

Abstract

The utility model relates to the field of power distribution devices, in particular to an insulating frame and a vacuum circuit breaker. On one hand, the insulation frame provided by the utility model comprises a main body frame, the main body frame is provided with a cylindrical insulation side wall, and the interior of the insulation side wall is an installation space used for installing a pole; and the mounting space penetrates through the two ends of the main body frame. On the other hand, the utility model provides a vacuum circuit breaker, which comprises a case, a pole and the insulating frame, a mounting platform is arranged on the case, and the insulating frame is arranged on the mounting platform; and the pole is arranged in the insulating frame and is fixedly connected with the insulating frame. Due to the fact that the insulation frame structure is adopted, the cylindrical insulation side wall of the insulation frame structure can effectively isolate the circuit breaker pole and the machine case or other metal parts, the discharging phenomenon is remarkably reduced, and the safety of equipment is improved.

Description

Technical Field

[0001] This application relates to the field of distribution devices, and in particular, to an insulating frame and a vacuum circuit breaker. Background Art

[0002] A circuit breaker is a switching device that can close, carry, and interrupt the current under normal and abnormal circuit conditions, thereby being used to distribute electric energy and protect power supply lines, motors, etc. It has the advantages of small volume, light weight, being suitable for frequent operation, and having no need for maintenance of arc extinguishing, and is widely used in high-voltage distribution networks.

[0003] A circuit breaker generally includes two major parts: a pole column and an operating mechanism. The pole column usually includes a vacuum interrupter and an outgoing line seat, etc., and the form of the operating mechanism can be a spring operating mechanism, an electromagnetic operating mechanism, and an energy storage operating mechanism, which are used to control the on-off of the power grid line. And a circuit breaker usually has a chassis, and the operating mechanism is arranged inside the chassis.

[0004] However, since the circuit breaker is at high voltage and is installed in a switch cabinet, when the environmental humidity is relatively high (such as in summer), there is a high probability that discharge will occur between the pole column of the circuit breaker and the frame plate of the switch cabinet. Therefore, how to effectively prevent the discharge between the pole column of the circuit breaker and other metal components has become an urgent problem to be solved in this field. Summary of the Utility Model

[0005] In order to solve the problem of discharge between the pole column of the circuit breaker and the frame plate, this application provides an insulating frame and a vacuum circuit breaker.

[0006] On the one hand, this application provides an insulating frame, adopting the following technical solution:

[0007] An insulating frame includes a main frame, the main frame has a cylindrical insulating side wall, and the inside of the insulating side wall is an installation space for installing a pole column; and the installation space penetrates through both ends of the main frame.

[0008] By adopting the above technical solution, the main frame can effectively isolate the pole column of the circuit breaker from the external environment, especially from the chassis or other metal components, thereby avoiding the possible discharge phenomenon in a high-humidity environment.

[0009] Preferably, heat dissipation holes are opened on the insulating side wall.

[0010] By adopting the above technical solution, the heat dissipation effect can be improved, and the working efficiency and service life of the equipment are improved.

[0011] Preferably, installation holes are opened on the insulating side wall for cooperating with the outgoing line seat.

[0012] By adopting the above technical solution, when the terminal post is loaded inside the insulating frame, the cooperation between the outgoing line seat and the mounting hole can effectively improve the connection stability between the two.

[0013] Preferably, the main frame further includes a fixing platform, which is arranged on the insulating side wall and is used for bolt connection with the terminal post.

[0014] By adopting the above technical solution, the setting of the fixing platform provides support for the installation and fixation of the terminal post, ensures the stability of the terminal post, and is also convenient for installation and disassembly.

[0015] On the other hand, the present application provides a vacuum circuit breaker, adopting the following technical solution:

[0016] A vacuum circuit breaker includes a chassis, a terminal post, and the insulating frame described above;

[0017] An installation platform is provided on the chassis, and the insulating frame is arranged at the installation platform; the terminal post is arranged inside the insulating frame and is fixedly connected to the insulating frame.

[0018] By adopting the above technical solution, the insulating frame is arranged on the installation platform, which can improve the integration with the chassis, and the terminal post is installed inside the insulating frame, which can ensure that the circuit breaker can operate safely and reliably even in a high-humidity environment, reducing the risk of discharge.

[0019] Preferably, the terminal post includes a heat dissipation frame, and the heat dissipation frame is connected to the insulating frame.

[0020] By adopting the above technical solution, the heat dissipation performance of the circuit breaker is improved, which helps to extend the service life of the equipment.

[0021] Preferably, the terminal post further includes heat dissipation fins fixedly connected to the heat dissipation frame. A notch is provided at the end of the insulating side wall, and the notch and the area of the installation space at the end of the main frame form a heat dissipation groove, and the heat dissipation fins are located in the heat dissipation groove.

[0022] By adopting the above technical solution, the setting of the heat dissipation fins further improves the heat dissipation effect, and the setting of the heat dissipation groove provides an effective heat exchange channel to ensure the heat dissipation efficiency.

[0023] Preferably, there are multiple terminal posts, and multiple insulating frames are provided and correspond to the multiple terminal posts one by one.

[0024] By adopting the above technical solution, each terminal post is separately isolated, which on the one hand ensures the insulation effect, and on the other hand can also ensure the independence between each terminal post.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. Since the present application adopts an insulating frame structure, its cylindrical insulating sidewall can effectively isolate the breaker pole column from the chassis or other metal components, thus significantly reducing the occurrence of discharge phenomena and improving the safety of the equipment.

[0027] 2. Through the design of heat dissipation holes, heat sinks and heat dissipation grooves on the insulating sidewall, the present application effectively improves the heat dissipation performance of the circuit breaker, ensuring the stability and lifespan of the equipment during high-load operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the vacuum circuit breaker in the embodiment of the present application;

[0029] Figure 2 is a schematic structural diagram of the insulating frame in the embodiment of the present application;

[0030] Figure 3 is a schematic overall structural diagram of the vacuum circuit breaker after adding the insulating frame in the embodiment of the present application.

[0031] Reference numerals in the drawings: 1, main body frame; 11, insulating sidewall; 111, heat dissipation hole; 112, mounting hole; 12, fixing platform; 13, heat dissipation groove; 2, chassis; 21, mounting platform; 3, pole column; 31, lower bracket; 32, outgoing line seat; 33, vacuum interrupter; 34, heat dissipation frame; 35, heat sink. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will further elaborate on the present application in conjunction with the attached Figures 1-3 drawings.

[0033] The present application provides an insulating frame and a vacuum circuit breaker.

[0034] Specifically, as Figure 1 shown, it is the main structure of the vacuum circuit breaker provided by the present application, which includes a chassis 2 and a pole column 3. The pole column 3 successively includes a lower bracket 31, an outgoing line seat 32, a vacuum interrupter 33, a heat dissipation frame 34 and a heat sink 35 from bottom to top.

[0035] The vacuum circuit breaker in the embodiment of the present application further includes an insulating frame.

[0036] Specifically, referring to Figure 2 and Figure 3 , an insulating frame includes a main body frame 1, and the main body frame 1 has a cylindrical insulating sidewall 11, which can be in a cylindrical shape or a square cylindrical shape. The embodiment of the present application takes the square cylindrical shape as an example for specific illustration.

[0037] For the convenience of installing the insulating frame, a mounting platform 21 is provided on the chassis 2, and the insulating frame can be fixedly installed on the mounting platform 21, thereby being integrated with the chassis 2 to improve the integrity of the vacuum circuit breaker.

[0038] Furthermore, the interior of the insulating sidewall 11 is an installation space, in which the pole column 3 is installed, and this installation space penetrates through both ends of the main frame 1. Such a design facilitates the installation and fixation of the pole column 3, and at the same time ensures the effective isolation of the pole column 3 from the surrounding metal components.

[0039] The main frame 1 further includes fixing platforms 12, and there are two groups of fixing platforms 12 which are respectively located on the upper and lower sides of the insulating sidewall 11. The heat dissipation frame 34 is connected to the upper fixing platform 12 by bolts, while the lower bracket 31 is connected to the lower fixing platform 12 by bolts, so as to fix the pole column 3 on the insulating frame.

[0040] Heat dissipation holes 111 are formed in the insulating sidewall 11. These heat dissipation holes 111 can enhance the heat dissipation performance of the insulating frame and prevent the decline or damage of the equipment performance caused by heat accumulation.

[0041] Mounting holes 112 are also formed in the insulating sidewall 11. The outgoing line seat 32 can be installed in the outgoing line holes, thereby further enhancing the stability of the pole column 3 and the insulating frame.

[0042] A notch is formed at the upper end of the insulating sidewall 11, and the notch and the upper region of the installation space form a heat dissipation groove 13, while the heat dissipation fin 35 is located in this heat dissipation groove 13, so that the heat dissipation fin 35 is exposed to ensure the heat dissipation effect.

[0043] The vacuum circuit breaker in the embodiment of the present application has a plurality of pole columns 3, generally three, and the insulating frames are also correspondingly provided with three. Each insulating frame matches the corresponding pole column 3. This design meets the requirements of a multi-pole circuit breaker and at the same time ensures that each pole column 3 can obtain effective insulation protection.

[0044] The insulating frame is made of insulating material, and its function is to prevent discharge phenomena from occurring between the pole column 3 of the circuit breaker and the chassis 2 or other metal components. This insulating material has excellent electrical insulation performance and can significantly improve the safety of the equipment.

[0045] The insulating material can be epoxy resin or ceramic material, both of which have good insulation performance and mechanical strength and can meet the performance requirements of the insulating frame in various working environments.

[0046] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An insulating frame, characterized in that: It includes a main body frame (1), the main body frame (1) having a cylindrical insulating side wall (11), the interior of the insulating side wall (11) being an installation space for installing a pole column (3); and the installation space runs through both ends of the main body frame (1).

2. The insulating frame according to claim 1, characterized in that: Heat dissipation holes (111) are provided on the insulating side wall (11).

3. The insulating frame according to claim 1, wherein: Mounting holes (112) are provided on the insulating side wall (11) for mating with an outgoing line base (32).

4. The insulating frame according to claim 1, characterized in that: The main body frame (1) further includes a fixing platform (12), the fixing platform (12) being provided on the insulating side wall (11) and used for bolt connection with the pole column (3).

5. A vacuum circuit breaker, characterized in that: It includes a chassis (2), a pole column (3), and the insulating frame according to any one of claims 1 - 4; An installation platform (21) is provided on the chassis (2), the insulating frame being disposed at the installation platform (21); the pole column (3) is disposed within the insulating frame and fixedly connected to the insulating frame.

6. The vacuum circuit breaker according to claim 5, wherein: The pole column (3) includes a heat dissipation frame (34), the heat dissipation frame (34) being connected to the insulating frame.

7. The vacuum circuit breaker according to claim 6, characterized in that: The pole column (3) further includes heat dissipation fins (35) fixedly connected to the heat dissipation frame (34), a notch being provided at the end of the insulating side wall (11), the notch and the area of the installation space at the end of the main body frame (1) forming a heat dissipation groove (13), the heat dissipation fins (35) being located within the heat dissipation groove (13).

8. The vacuum circuit breaker according to claim 5, characterized in that: There are multiple pole columns (3), and multiple insulating frames are provided and correspond one - to - one with the multiple pole columns (3).

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