Solid-sealed polar pole

Abstract

The utility model relates to a solid-sealed polar pole, which comprises an epoxy resin main body, an upper wire outlet seat, a vacuum arc-extinguishing chamber, a voltage-sharing cover, an operating rod, a flexible connector, a grounding shielding piece and a mounting insert, the vacuum arc-extinguishing chamber is encapsulated at the upper part of the epoxy resin main body, the lower part of the epoxy resin is provided with a mounting cavity, the upper end of the vacuum arc-extinguishing chamber is connected with the upper outgoing line seat, the flexible connector is arranged in the mounting cavity and connected with the lower end of the vacuum arc-extinguishing chamber, the voltage-sharing cover is fixed at the upper end of the flexible connector, and the operating rod is fixed at the middle part of the flexible connector; the epoxy resin body is further provided with a heat dissipation channel, the lower end of the heat dissipation channel communicates with the mounting cavity, and the upper end of the heat dissipation channel extends to the top face of the epoxy resin body. The grounding shielding piece and the mounting insert are pre-embedded in the epoxy resin main body and are connected with each other, the grounding shielding piece is used for shielding a deformed electric field outside the solid-sealed polar pole, and the mounting insert is used for mounting the solid-sealed polar pole. The utility model aims to provide a high-weather-resistance and low-temperature-rise solid-sealed polar pole.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of switchgear, especially a solid-sealed pole. BACKGROUND

[0002] With the rapid development of smart grid technology, the power system has increasingly improved requirements for power supply quality and safety and reliability. In the field of high-voltage switchgear engineering applications, as a key component, the circuit breaker directly affects the stable operation of the entire power grid. When dealing with complex and changing external environments and increasingly high voltage levels, traditional circuit breakers face challenges such as reduced insulation performance, insufficient mechanical strength, and poor heat dissipation. Therefore, solid-sealed pole circuit breakers, with their unique advantages, have gradually become the preferred solution in high-voltage switchgear engineering selection.

[0003] Solid-sealed pole circuit breakers use high-performance epoxy resin materials to encapsulate key components, not only significantly improving the weather resistance and mechanical support strength of the equipment, but also achieving uniformity of field strength distribution through optimized structural design, thereby effectively reducing insulation size and reducing the use of fixed connectors. This innovative design not only reduces equipment failure rates, but also significantly improves the operational stability and safety of the equipment in high-voltage, high-current environments.

[0004] However, the use environment of solid-sealed poles is extremely harsh, and many technical difficulties are faced during the design and manufacturing process. First, the solid-sealed insulation material must have excellent electrical insulation performance, mechanical strength, heat resistance, and weather resistance to withstand long-term stable operation under high voltage. Second, the design of the solid-sealed insulation structure must fully consider the uniformity of the electric field distribution to avoid the problem of extremely uneven electric field caused by intermediate grounding metal longitudinal beams and other structures, which directly relates to the insulation performance and overall safety of the circuit breaker.

[0005] In terms of heat dissipation, solid-sealed pole circuit breakers also face challenges. Circuit breakers generate a large amount of heat during operation, which will seriously affect the operational efficiency and stability of the equipment if not dissipated in time. Therefore, how to optimize the heat dissipation design while ensuring insulation performance and improve the heat dissipation capacity of the solid-sealed pole has become a technical problem that needs to be solved urgently. INVENTION CONTENTS

[0006] The utility model aims at solving the above technical problem, providing a solid-sealed pole, the application is to improve the structure of the solid-sealed pole, improve the heat dissipation effect of the solid-sealed pole, improve the uneven electric field of the solid-sealed pole, and provide a high-weather-resistance low-temperature-rise solid-sealed pole.

[0007] A solid-sealed electrode post includes an epoxy resin body, an upper outlet socket, a vacuum interrupter, a voltage equalization shield, an operating lever, a flexible connection, a grounding shield, and a mounting insert. The vacuum interrupter is encapsulated in the upper part of the epoxy resin body, and the lower part of the epoxy resin body has a mounting cavity. The upper end of the vacuum interrupter is connected to the upper outlet socket, and the flexible connection is connected to the lower end of the vacuum interrupter within the mounting cavity. The voltage equalization shield is fixed to the upper end of the flexible connection, and the operating lever is fixed to the middle of the flexible connection. The epoxy resin body also has a heat dissipation channel, the lower end of which communicates with the mounting cavity, and the upper end of which extends to the top surface of the epoxy resin body. The grounding shield and the mounting insert are embedded in the epoxy resin body and connected to each other. The grounding shield is used to shield the non-uniform electric field outside the solid-sealed electrode post, and the mounting insert is used to mount the solid-sealed electrode post.

[0008] According to the solid-sealed pole of this application, the vacuum interrupter is encapsulated in epoxy resin to maintain insulation. The moving end electrical connection of the vacuum interrupter adopts a flexible connection structure. Since the flexible connection is an irregular structure, the electric field is uneven. This application fixes it to the upper part of the flexible connection through an equalizing cover, which evens out the electric field inside the solid-sealed pole. The solid-sealed pole is installed and fixed by a pre-embedded mounting insert. At the same time as installation, the grounding shield is grounded, thereby improving the uneven electric field outside the solid-sealed pole. Furthermore, the flexible connection structure of the moving end electrical connection of the vacuum interrupter can increase the heat dissipation area, which is beneficial for heat dissipation. The heat generated by the vacuum interrupter and the flexible connection in the mounting cavity is dissipated from bottom to top to the outside of the solid-sealed pole through the heat dissipation channel.

[0009] Furthermore, the lower end of the heat dissipation channel corresponds to the connection point between the flexible connector and the vacuum interrupter. This allows heat generated at the connection point between the vacuum interrupter and the flexible connector to be easily dissipated directly through the heat dissipation channel.

[0010] Furthermore, the operating lever has a portion of its body extending downwards into the mounting cavity. This allows for easy connection of the operating lever to an external operating mechanism.

[0011] Furthermore, the grounding shield and mounting insert are positioned in the middle of the epoxy resin body. This ensures that the solidified electrode post is vertically balanced and stable when fixed in place by the mounting insert.

[0012] Furthermore, the pressure equalization shield is a circular pressure equalization shield.

[0013] Furthermore, the epoxy resin body is made of epoxy resin material with high heat dissipation performance, thereby improving the heat dissipation effect of the solidified electrode. Attached Figure Description

[0014] Figure 1 This is a partial cross-sectional view of the solid-sealed pole of this utility model.

[0015] Figure 2 This is a partial cross-sectional view of the solid-sealed pole of this utility model from another direction.

[0016] Figure 3 This is a front view of the solid-sealed pole of this utility model.

[0017] Figure 4 This is a side view of the solid-sealed pole of this utility model.

[0018] Figure 5 This is a top view of the solid-sealed pole of this utility model. Detailed Implementation

[0019] A solid-sealed pole of this utility model is described in conjunction with the accompanying drawings.

[0020] like Figures 1 to 5 The solid-sealed pole shown includes an epoxy resin body 1, an upper outlet socket 2, a vacuum interrupter 3, an equalizing cover 4, an operating lever 5, a flexible connection 6, a grounding shield 7, and a mounting insert 8. The vacuum interrupter 3 is encapsulated in the upper part of the epoxy resin body 1, and the lower part of the epoxy resin body has a mounting cavity. The upper end of the vacuum interrupter 3 is connected to the upper outlet socket 2, which is used to connect to a contact head seat or other structures. The flexible connection 6 is connected to the vacuum interrupter 3 within the mounting cavity. The lower end is connected to the flexible connection 6, which includes a middle part at the upper end and a wing part at the lower end. The flexible connection 6 is connected to the lower end of the vacuum interrupter 3 through the middle part. The equalizing cover 4 is fixed to the upper end of the flexible connection 6, that is, the equalizing cover 4 is fixed on the outer wall of the middle part. Preferably, the equalizing cover 4 is a circular equalizing cover 4. Since the flexible connection 6 has an irregular structure, especially the wing part, the electric field is not uniform. In this application, the equalizing cover 4 is fixed to the upper part of the flexible connection 6, and the equalizing cover 4 uniformly seals the inside of the pole post. Electric field; the operating rod 5 is fixed in the middle of the flexible connection 6, and a fixing hole is provided in the middle part. The fixing hole is set downward and the operating rod 5 is fixed in the fixing hole, so that the operating rod 5 is accommodated in the wings on both sides. The wings can increase the heat dissipation area and facilitate heat dissipation; the epoxy resin body 1 is also provided with a heat dissipation channel 11. The lower end of the heat dissipation channel 11 is connected to the mounting cavity, and the upper end of the heat dissipation channel 11 extends to the top surface of the epoxy resin body 1. The heat generated by the vacuum interrupter 3 and the flexible connection 6 in the mounting cavity is dissipated from bottom to top to the solid-sealed pole through the heat dissipation channel 11; the grounding shield 7 and the mounting insert 8 are embedded in the epoxy resin body 1 and connected to each other. The grounding shield 7 and the mounting insert 8 are used to ground when installing the solid-sealed pole. The grounding shield 7 is grounded at the same time as the installation. The grounding shield 7 is used to shield the non-uniform electric field outside the solid-sealed pole, thereby improving the non-uniform electric field situation outside the solid-sealed pole.

[0021] like Figure 1As shown, the lower end position of the heat dissipation channel 11 corresponds to the position of the connection between the flexible connection 6 and the vacuum interrupter 3, and the lower end position of the heat dissipation channel 11 is substantially at the same horizontal position as the position of the connection between the flexible connection 6 and the vacuum interrupter 3, so that the heat generated at the connection between the vacuum interrupter 3 and the flexible connection 6 can be directly discharged from the heat dissipation channel 11.

[0022] As shown in Figure 3 and Figure 4 As shown, the operating rod 5 has a part of the rod body extending downward into the installation cavity, so that the operating rod 5 can be conveniently connected with the operating mechanism.

[0023] As shown in Figure 3 As shown, the grounding shield 7 and the installation insert 8 are arranged at the middle position of the epoxy resin body 1, and the middle position of the epoxy resin body 1 is formed with an installation plane, and the installation inserts 8 are uniformly arranged on the installation plane, so that the solid-sealed pole can be balanced up and down when fixedly installed through the installation inserts 8, thereby maintaining stability.

[0024] The epoxy resin body 1 is made of high-heat-dissipation epoxy resin material, which can be special modified epoxy resin, for example, metal oxides (such as aluminum oxide, zinc oxide, etc.), silicon carbide, graphite or nanomaterials can be added to the epoxy resin matrix, which can significantly improve the thermal conductivity of the epoxy resin; it can also be alicyclic epoxy resin: the alicyclic epoxy resin has the advantages of high purity, small viscosity, good operability, high heat resistance and small shrinkage rate, etc., and its unique molecular structure enables it to form a dense network structure after curing, which is conducive to improving the heat conduction efficiency; it can also be a blended modified epoxy resin, which can combine the advantages of different epoxy resins to obtain an epoxy resin material with more excellent performance. For example, blending an epoxy resin with high thermal conductivity with an epoxy resin with good processing performance can improve the processing performance of the material while maintaining high thermal conductivity.

[0025] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should also fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the present specification, these terms are only for convenience of explanation and do not constitute any limitation on the present application.

Claims

1. A dead tank pole, characterized by, The device comprises an epoxy body, an upper outgoing line seat, a vacuum arc-extinguishing chamber, a voltage-sharing cover, an operating rod, a flexible connection, a grounding shield and a mounting insert; the vacuum arc-extinguishing chamber is enclosed in the upper part of the epoxy body, the lower part of the epoxy body is provided with a mounting cavity, the upper end of the vacuum arc-extinguishing chamber is connected with the upper outgoing line seat, the flexible connection is connected with the lower end of the vacuum arc-extinguishing chamber in the mounting cavity, the voltage-sharing cover is fixed on the upper end of the flexible connection, and the operating rod is fixed on the middle part of the flexible connection; the epoxy body is further provided with a heat dissipation channel, the lower end of the heat dissipation channel is communicated with the mounting cavity, and the upper end of the heat dissipation channel extends to the top surface of the epoxy body; the grounding shield and the mounting insert are embedded in the epoxy body and are connected with each other, the grounding shield is used for shielding the uneven electric field outside the solidified pole, and the mounting insert is used for mounting the solidified pole.

2. The deadfront pole as claimed in claim 1, characterized in that The lower end of the heat dissipation channel corresponds to the position of the connection between the flexible connection and the vacuum arc-extinguishing chamber.

3. The deadfront pole as recited in claim 1, wherein, The operating rod has a part of the rod body extending downward into the mounting cavity.

4. The deadfront pole as recited in claim 1, wherein, The grounding shield and the mounting insert are arranged at the middle part of the epoxy body.

5. The deadfront pole as recited in claim 1, wherein, The voltage-sharing cover is a circular voltage-sharing cover.

6. The deadfront pole as recited in claim 1, wherein, The epoxy body is made of an epoxy material with high heat dissipation performance.

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