An environmentally friendly gas-insulated switchgear contact structure

Abstract

This utility model discloses an environmentally friendly gas-insulated switchgear contact structure, specifically relating to the field of power distribution switch control equipment manufacturing technology. It includes two mirror-symmetrically arranged copper contact pieces; a spacer sleeve disposed between the two copper contact pieces; an adjusting bolt assembly passing through the spacer sleeve and the copper contact pieces; and a switching arm connecting the middle of the two copper contact pieces. The adjusting bolt assembly includes an adjusting bolt, a pressure spring, and a spring cap. The pressure spring, pre-tightened by the spring cap, provides an adjustable elastic clamping force, enabling flexible switching between the copper contact pieces and the terminal. This utility model uses a pressure spring to provide buffering, significantly reducing the switching operation force; elastic clamping avoids rigid friction, improving service life; external adjusting bolts dynamically compensate for wear, avoiding the need to replace the entire switchgear; and the spring pre-tightening force ensures a tight contact between the contact and the terminal, reducing arc erosion.

Description

Technical Field

[0001] This utility model relates to the field of power distribution switch control equipment manufacturing technology, specifically to an environmentally friendly gas-insulated cabinet knife switch contact structure. Background Technology

[0002] The knife switch in a high-voltage gas-insulated switchgear is an essential component for the operation of high-voltage gas-filled ring network equipment. In existing technology, the common practice for the knife switch contacts in traditional gas-insulated switchgear is to use metal gaskets to secure them. The contacts are clamped onto the terminals using the slight elasticity of the gaskets, enabling the opening and closing of the knife switch contacts. This process requires significant force, and because both the terminals and contacts are made of copper, they are prone to wear, leading to loosening and instability in power supply, and even switch burnout. This severely shortens the switch's lifespan. Furthermore, the knife switches in gas-insulated switchgear are sealed in an enclosed enclosure filled with insulating gas, making them impossible to disassemble for repair. Damage requires replacing the entire enclosure, resulting in very high maintenance costs.

[0003] Therefore, an environmentally friendly gas-insulated cabinet knife switch contact structure is provided. Utility Model Content

[0004] The purpose of this invention is to provide an environmentally friendly gas-insulated cabinet knife switch contact structure to address the shortcomings of the aforementioned technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an environmentally friendly gas-insulated cabinet knife switch contact structure, comprising two mirror-symmetrically arranged copper contact pieces; a spacer sleeve disposed between the two copper contact pieces; an adjusting bolt assembly passing through the spacer sleeve and the copper contact pieces; and a splitting and engaging swing arm connecting the middle of the two copper contact pieces; the adjusting bolt assembly includes an adjusting bolt, a pressure spring, and a spring cap, wherein the pressure spring is pre-tightened by the spring cap to provide an adjustable elastic clamping force, enabling the copper contact pieces to flexibly separate and engage with the terminal.

[0006] According to one embodiment of the present invention, the copper contact component is divided into a contact end and a fixed end. The contact end is provided with a groove that matches the pile head, and the fixed end is provided with a mounting hole.

[0007] According to one embodiment of the present invention, the adjusting bolt assembly is symmetrically arranged on both sides of the contact end and the fixed end. By tightening the adjusting bolts to compress the pressure spring, the clamping force of the copper contact piece is dynamically adjusted.

[0008] According to one embodiment of the present invention, the spacer sleeve is a metal round tube, which limits the minimum distance between the contact ends of the two copper contact pieces.

[0009] According to one embodiment of the present invention, the splitting and opening swing arm is an insulating component, with its two ends embedded in the middle of two copper contact pieces, driving the copper contact pieces to split and open with the pile head.

[0010] According to one embodiment of the present invention, the power unit is a servo motor, the output shaft is connected to the drive gear and the middle section tooth pattern meshing, and the servo motor is fixed on the inner side wall of the main body.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0012] 1. This utility model provides buffering through pressure springs, greatly reducing the operating force for opening and closing the circuit breaker; elastic clamping avoids rigid friction and improves service life; external adjusting bolts dynamically compensate for wear, avoiding the need to replace the entire cabinet; spring preload ensures tight contact between the contact and the terminal, reducing arc erosion. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the planar structure of the present invention;

[0016] Figure 3 This is a partially enlarged schematic diagram of the present invention;

[0017] Figure 4 This is a schematic diagram showing the detailed composition of the contact of this utility model.

[0018] Components and their numbers shown in the picture:

[0019] 1. Knife switch; 2. Spacer sleeve; 3. Copper contact component; 4. Opening / closing swing arm; 5. Contact end; 6. Fixed end; 7. Adjusting bolt assembly; 8. Adjusting bolt; 9. Spring cap; 10. Pressure spring. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] This utility model provides, for example Figure 1-4The diagram shows a contact structure for an environmentally friendly gas-insulated switchgear, comprising two mirror-symmetrically arranged copper contact pieces 3; a spacer sleeve 2 located between the two copper contact pieces 3; an adjusting bolt assembly 7 passing through the spacer sleeve 2 and the copper contact pieces 3; and a splitting / closing swing arm 4 connecting the middle of the two copper contact pieces 3. The adjusting bolt assembly 7 includes an adjusting bolt 8, a pressure spring 10, and a spring cap 9. The pressure spring 10 is pre-tightened by the spring cap 9 to provide an adjustable elastic clamping force, enabling the copper contact pieces 3 to flexibly separate and close with the terminals. The copper contact pieces 3 are used for conducting electricity and clamping the terminals. The spacer sleeve 2 limits the minimum contact spacing. The adjusting bolt assembly 7 passes through the spacer sleeve 2 and the copper contact pieces 3, and provides an adjustable elastic clamping force through the pre-tightened pressure spring 10. The splitting / closing swing arm 4 is made of insulating material and connects the middle of the two copper contact pieces 3, driving the contacts to separate and close with the terminals.

[0022] Furthermore, such as Figure 2 As shown, the copper contact 3 is divided into a contact end 5 and a fixed end 6. The contact end 5 is provided with a groove that matches the pile head, and the fixed end 6 is provided with a mounting hole. The contact end 5 is provided with a groove that matches the shape of the pile head to ensure a tight fit when the switch is closed. The fixed end 6 has a mounting hole for fixing to the main body of the knife switch 1.

[0023] The adjusting bolt assembly 7 is symmetrically arranged on both sides of the contact end 5 and the fixed end 6. By tightening the adjusting bolt 8 to compress the pressure spring 10, the clamping force of the copper contact 3 is dynamically adjusted.

[0024] In this embodiment, as Figure 3 , 4 As shown, the spacer sleeve 2 is a metal round tube that limits the minimum distance between the contact ends 5 of the two copper contact pieces 3; it forcibly constrains the minimum distance between the contact ends 5 of the two copper contact pieces 3 to avoid excessive compression leading to wear.

[0025] In this embodiment, the splitting and opening swing arm 4 is an insulating component, with its two ends embedded in the middle of two copper contact pieces 3, driving the copper contact pieces 3 to split and open with the pile head.

[0026] Installation process:

[0027] First, fit the spring cap 9 and pressure spring 10 onto the adjusting bolt 8 as the 7 adjusting bolt assembly for later use; align the holes of the contact ends 5 of the two copper contact pieces 3 mirror-aligned, left and right, and clamp the spacer sleeve 2 into the contact ends 5 between the two copper contact pieces 3. Screw the adjusting bolt assembly 7 into the spacer sleeve 2 from both sides to clamp the copper contact pieces 3. Connect the copper contact pieces 3 to the opening and closing swing arm 4 on the knife switch 1. When connecting, the opening and closing swing arm 4 should be clamped in the middle of the copper contact pieces 3. Finally, clamp the fixed end 6 of the copper contact pieces 3 into the installation position of the knife switch 1, align the holes, and screw the adjusting bolt assembly 7 into the hole from both sides. Use a torque wrench to adjust and tighten the adjusting bolts 8 of the contact ends 5 and the fixed end 6 to complete the entire installation process.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An environmentally friendly gas insulated switchgear contact structure of a knife switch, characterized in that, include: Two mirror-symmetrically arranged copper contact pieces (3); A spacer sleeve (2) is provided between two copper contact pieces (3); An adjusting bolt assembly (7) passing through the spacer sleeve (2) and the copper contact (3); A splitting and opening swing arm (4) connects the middle of the two copper contact pieces (3); The adjusting bolt assembly (7) includes an adjusting bolt (8), a pressure spring (10) and a spring cap (9). The pressure spring (10) is pre-tightened by the spring cap (9) to provide an adjustable elastic clamping force, so that the copper contact (3) and the pile head can be flexibly separated and joined.

2. An environmentally friendly gas insulated switchgear contact structure of a knife switch according to claim 1, characterized in that: The copper contact (3) is divided into a contact end (5) and a fixed end (6). The contact end (5) is provided with a groove that matches the pile head, and the fixed end (6) is provided with a mounting hole.

3. The environmentally friendly gas insulated switchgear contact structure of claim 2, wherein: The adjusting bolt assembly (7) is symmetrically arranged on both sides of the contact end (5) and the fixed end (6). By tightening the adjusting bolt (8) to compress the pressure spring (10), the clamping force of the copper contact (3) is dynamically adjusted.

4. The environmentally friendly gas insulated switchgear contact structure of claim 2, wherein: The spacer sleeve (2) is a metal round tube that limits the minimum distance between the contact ends (5) of the two copper contact pieces (3).

5. The environmentally friendly gas insulated switchgear contact structure of claim 1, wherein: The splitting and opening swing arm (4) is an insulating component, with its two ends embedded in the middle of two copper contact pieces (3), driving the copper contact pieces (3) to split and open with the pile head.

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