A 110kV GW4-126 type disconnector switch maintenance tooling

Abstract

This invention discloses a maintenance fixture for a 110kV GW4-126 disconnector switch, comprising a base, a first limiting block, a second limiting block, a third limiting block, and a fixing component. The fixing component, the first limiting block, the second limiting block, and the third limiting block are fixed to the base from left to right. The height of the third limiting block is higher than that of the first and second limiting blocks, and the third limiting block, the first limiting block, and the second limiting block are parallel to each other. This fixture can fix the position of the disconnector seat and the contact arm, thereby improving the efficiency of disconnector switch maintenance.

Description

Technical Field

[0001] This invention relates to a maintenance fixture, specifically a maintenance fixture for a 110kV GW4-126 type disconnecting switch. Background Technology

[0002] With the continuous increase in power grid load, disconnecting switches are prone to the aforementioned problems during peak load periods. After handling these issues multiple times, the disassembly and assembly process of single-pole disconnectors has drawn our attention. The assembly of single-pole disconnectors has strict process requirements; if the on-site maintenance process is not up to standard, it will create safety hazards and affect the safe operation of the power grid.

[0003] The 110kV GW4-126 disconnector is a widely used disconnector in the Xi'an 110kV power grid. While the improved GW4 model has addressed some issues found in the original model through design and material selection, problems such as contact point overheating and jamming during the opening and closing process still occur due to operating conditions and environmental factors. To address these issues, during routine maintenance and temporary troubleshooting, after inspecting the disconnector's appearance and contact surfaces, maintenance personnel often need to completely remove the single-pole disconnector from the support insulator, disassemble it on the ground, and inspect each component, cleaning and replacing any damaged parts before reassembling it. During assembly, the limited space makes it difficult for maintenance personnel to effectively secure the disconnector's back seat and contact arm, making the assembly process time-consuming and labor-intensive, requiring multiple people to work simultaneously and causing considerable inconvenience.

[0004] In current on-site maintenance processes, assembled single-pole disconnectors require multiple adjustments to meet process requirements, consuming significant maintenance time and labor costs. Therefore, we decided to develop a tooling system suitable for the maintenance of 110kV GW4-126 series disconnectors, taking into account on-site operating conditions. This tooling system will not only facilitate the disassembly and assembly of the disconnector but also fix its components, making on-site work easier for maintenance personnel, effectively improving the efficiency of disconnector maintenance, while ensuring maintenance quality and meeting installation process requirements. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a 110kV GW4-126 disconnector maintenance fixture. This fixture can fix the back seat and contact arm of the disconnector, thereby improving the efficiency of disconnector maintenance.

[0006] To achieve the above objectives, the 110kV GW4-126 disconnector maintenance fixture of the present invention includes a base, a first limiting block, a second limiting block, a third limiting block, and a fixing component. The fixing component, the first limiting block, the second limiting block, and the third limiting block are fixed to the base from left to right. The height of the third limiting block is higher than that of the first and second limiting blocks, and the third limiting block, the first limiting block, and the second limiting block are distributed in parallel.

[0007] When the 110kV GW4-126 disconnector is leveled in the horizontal direction, the back seat of the disconnector is fixed to the base by the fixing component, and the contact arm of the 110kV GW4-126 disconnector is located on the third limit block.

[0008] When the 110kV GW4-126 disconnector is leveled vertically, it stands between the first and second limit blocks. The disconnector seat of the 110kV GW4-126 disconnector is engaged between the first and second limit blocks.

[0009] The fixing assembly includes four bolts, which are vertically fixed to the base.

[0010] The four bolts are arranged in a square.

[0011] The first limiting block is fixed to the base by fixing bolts.

[0012] The upper surface of the base is provided with a first sliding groove and a second sliding groove, wherein the first sliding groove and the second sliding groove are distributed in parallel. A baffle is provided on the side of the base. A first slider that cooperates with the first sliding groove is provided at the bottom of the first limiting block. A second slider that cooperates with the second sliding groove is provided at the bottom of the second limiting block. The first slider and the second slider are limited by the baffle.

[0013] The base has a symmetrical stepped structure on both sides.

[0014] The first limiting block has a first limiting plate at its end, and the second limiting block has a second limiting plate at its end. The first limiting plate and the baffle are located on both sides of the base, and the second limiting plate and the baffle are located on both sides of the base.

[0015] Insulating pads are provided on the surface of the base and the upper surface of the third limiting block.

[0016] The present invention has the following beneficial effects:

[0017] In specific operation, when the 110kV GW4-126 disconnector maintenance fixture of the present invention is used for horizontal leveling, the disconnector seat of the 110kV GW4-126 disconnector is fixed to the base by a fixing component, and the contact arm of the 110kV GW4-126 disconnector is located on the third limiting block; when the 110kV GW4-126 disconnector is used for vertical leveling, the 110kV GW4-126 disconnector is erected between the first limiting block and the second limiting block, wherein the disconnector seat of the 110kV GW4-126 disconnector is engaged between the first limiting block and the second limiting block to fix the position of the disconnector seat and the contact arm, thereby improving the efficiency of disconnector maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Among them, 1 is a fixed component, 2 is a base, 3 is a first limiting block, 4 is a second limiting block, 5 is a third limiting block, and 6 is a baffle. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings:

[0021] refer to Figure 1 The 110kV GW4-126 disconnector maintenance fixture of the present invention includes a base 2, a first limiting block 3, a second limiting block 4, a third limiting block 5, and a fixing component 1. The fixing component 1, the first limiting block 3, the second limiting block 4, and the third limiting block 5 are fixed to the base 2 from left to right. The height of the third limiting block 5 is higher than that of the first limiting block 3 and the second limiting block 4, and the third limiting block 5, the first limiting block 3, and the second limiting block 4 are parallel to each other. When the 110kV GW4-126 disconnector is horizontally leveled, the disconnector seat of the 110kV GW4-126 disconnector is fixed to the base 2 by the fixing component 1, and the contact arm of the 110kV GW4-126 disconnector is located on the third limiting block 5. When the 110kV GW4-126 disconnector is vertically leveled, the 110kV... The GW4-126 disconnector is erected between the first limit block 3 and the second limit block 4. In the 110kV GW4-126 disconnector, the knife switch seat is engaged between the first limit block 3 and the second limit block 4.

[0022] The fixing component 1 includes four bolts, which are vertically fixed to the base 2 and are arranged in a square.

[0023] The first limiting block 3 is fixed to the base 2 by fixing bolts; the upper surface of the base 2 is provided with a first sliding groove and a second sliding groove, wherein the first sliding groove and the second sliding groove are distributed in parallel; a baffle 6 is provided on the side of the base 2; a first slider that cooperates with the first sliding groove is provided at the bottom of the first limiting block 3; a second slider that cooperates with the second sliding groove is provided at the bottom of the second limiting block 4; the first slider and the second slider are limited by the baffle 6.

[0024] The two sides of the bottom of base 2 are symmetrical stepped structures.

[0025] The first limiting block 3 is provided with a first limiting plate at its end, and the second limiting block 4 is provided with a second limiting plate at its end. The first limiting plate and the baffle 6 are respectively located on both sides of the base 2, and the second limiting plate and the baffle 6 are respectively located on both sides of the base 2. Insulating pads are provided on the surface of the base 2 and the upper surface of the third limiting block 5.

[0026] Disconnecting switch disassembly and maintenance process:

[0027] refer to Figure 1 When the 110kV GW4-126 disconnector is leveled horizontally, the fixed knife switch seat of the 110kV GW4-126 disconnector is fixed to the base 2 by the fixing component 1, and the contact arm of the 110kV GW4-126 disconnector is located on the third limit block 5, so as to solve the problem of heat generation and bolt corrosion at the horizontal connection between the contact finger and the contact arm and the flexible connection, and to successfully level the switch.

[0028] When the 110kV GW4-126 disconnector is vertically leveled, it stands between the first limit block 3 and the second limit block 4. The fixed knife switch seat in the 110kV GW4-126 disconnector is engaged between the first limit block 3 and the second limit block 4 to achieve heat treatment at the vertical connection between the contact finger and the contact arm.

[0029] In the design and manufacturing process of this invention, insulating pads are provided on all contact surfaces with the disconnecting switch to ensure that the surface metal material of the disconnecting switch is not damaged during disassembly and assembly.

Claims

1. A maintenance fixture for a 110kV GW4-126 type disconnecting switch, characterized in that, It includes a base (2), a first limiting block (3), a second limiting block (4), a third limiting block (5) and a fixing component (1), wherein the fixing component (1), the first limiting block (3), the second limiting block (4) and the third limiting block (5) are fixed on the base (2) from left to right, the height of the third limiting block (5) is higher than the first limiting block (3) and the second limiting block (4), and the third limiting block (5), the first limiting block (3) and the second limiting block (4) are distributed in parallel. When the 110kV GW4-126 disconnector is leveled in the horizontal direction, the back seat of the disconnector of the 110kV GW4-126 disconnector is fixed to the base (2) by the fixing component (1), and the contact arm of the 110kV GW4-126 disconnector is located on the third limit block (5). When the 110kV GW4-126 disconnector is leveled vertically, it stands upright between the first limit block (3) and the second limit block (4), wherein the disconnector seat of the 110kV GW4-126 disconnector is engaged between the first limit block (3) and the second limit block (4); The upper surface of the base (2) is provided with a first sliding groove and a second sliding groove, wherein the first sliding groove and the second sliding groove are distributed in parallel. A baffle (6) is provided on the side of the base (2). The bottom of the third limiting block (5) is provided with a first slider that cooperates with the first sliding groove. The bottom of the second limiting block (4) is provided with a second slider that cooperates with the second sliding groove. The first slider and the second slider are limited by the baffle (6). The base (2) has a symmetrical stepped structure on both sides at the bottom; The end of the third limiting block (5) is provided with a first limiting plate, and the end of the second limiting block (4) is provided with a second limiting plate. The first limiting plate and the baffle (6) are located on both sides of the base (2), and the second limiting plate and the baffle (6) are located on both sides of the base (2).

2. The 110kV GW4-126 disconnector maintenance fixture according to claim 1, characterized in that, The fixing component (1) includes four bolts, which are vertically fixed to the base (2).

3. The 110kV GW4-126 disconnector maintenance fixture according to claim 2, characterized in that, The four bolts are arranged in a square.

4. The 110kV GW4-126 disconnector maintenance fixture according to claim 1, characterized in that, The first limiting block (3) is fixed to the base (2) by fixing bolts.

5. The 110kV GW4-126 disconnector maintenance fixture according to claim 1, characterized in that, Insulating pads are provided on the surface of the base (2) and the upper surface of the third limiting block (5).

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