Disassembling and assembling jig for movable side assembly of GIS circuit breaker arc extinguish chamber

Abstract

The utility model discloses a dismounting tool for a moving side assembly of a GIS breaker arc extinguish chamber, comprising an operation board, a fixed support and a plurality of positioning pins, the operation board comprises an axial through center hole, the plurality of positioning pins are fixed on the top surface of the operation board and are uniformly distributed along the circumferential direction of the operation board; the top end of the fixing support is connected with the bottom face of the operation board. The fixing support of the disassembling and assembling jig is fixed on the workbench, the operation board is in a horizontal state, and the receiving disc of the movable side assembly is placed on the top face of the operation board. And after being circumferentially positioned by the positioning pin on the top surface of the operating panel, the connecting hole on the connecting disc can be conveniently in threaded connection with a connecting rod or a contact seat, and a rated torque is achieved.

Description

Technical Field

[0001] This utility model relates to a jig for disassembling and assembling gas-insulated switchgear, and more particularly to a jig for disassembling and assembling the moving side component of the arc-extinguishing chamber of a GIS circuit breaker. Background Technology

[0002] Gas-insulated switchgear (gas-insulated fully enclosed switchgear), abbreviated as GIS, is highly popular among users and has experienced rapid development due to its advantages such as small size, small footprint, insensitivity to external environmental influences, safe and reliable operation, simple maintenance, and long maintenance cycles. The arc-extinguishing chamber of the circuit breaker in gas-insulated switchgear is one of the core components of the circuit breaker, responsible for extinguishing the electric arc when the circuit is disconnected, preventing the continued flow of current and protecting the electrical system from damage.

[0003] The structure of the moving side assembly of the arc-extinguishing chamber of a GIS circuit breaker is as follows: Figures 1 to 3 As shown, it includes a connecting rod 20, a flange 30, and a contact seat 40. The functions performed by the moving side assembly of the arc-extinguishing chamber during circuit breaker opening include: (1) rapid separation of the moving and stationary contacts, cutting off the current path and generating an arc; (2) driving gas flow through mechanical movement to form a high-speed airflow that blows away the arc, accelerating arc cooling and energy dissipation; and (3) ensuring rapid restoration of insulation strength between the breaks after the arc is extinguished, preventing arc reignition. As one of the core components of the circuit breaker, the moving side assembly of the arc-extinguishing chamber directly affects the circuit breaker's opening and closing performance, arc extinguishing capability, and equipment reliability. Figures 1 to 3 As shown, the receiving plate 30 includes a flange 31 and a hollow shaft 32. The hollow shaft 32 includes internal and external threads, and the flange 31 has three arc-shaped connecting holes 311. During the assembly of the moving side assembly of the GIS circuit breaker arc-extinguishing chamber, the shaft end of the connecting rod 20 is inserted into the inner hole of the hollow shaft 32, and the external thread of the connecting rod 20 is connected to the internal thread in the inner hole of the receiving plate hollow shaft 32. The inner hole of the contact seat 40 is fitted over the hollow shaft 32 of the receiving plate, and the internal thread in the inner hole of the contact seat 40 is connected to the internal thread of the receiving plate hollow shaft 32.

[0004] During the assembly of the arc-extinguishing chamber of a GIS circuit breaker, it is necessary to consider the ease of assembly between various components and ensure installation quality. The threaded connections must reach the rated torque. The following difficulties exist in the assembly of the arc-extinguishing chamber of a 252kV circuit breaker: Due to the compact structure of the arc-extinguishing chamber, the installation positions of the junction box and connecting rod are located inside the equipment and adjacent to other components, resulting in limited operating space for torque wrenches or other disassembly tools, leading to deviations in the torque application angle and preventing the rated value from being reached; the non-planar design of the connection surfaces of the junction box and connecting rod results in inaccurate alignment of the threaded holes and uneven force during tightening; the junction box is made of cast aluminum ZL101A-T6, while the connecting rod is made of 45 cold-drawn round steel. Due to the different hardness of the materials, deformation may occur during tightening, leading to inaccurate torque transmission or thread damage. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a jig for disassembling and assembling the moving side assembly of the arc-extinguishing chamber of a GIS circuit breaker, which facilitates the threaded connection of the connecting rod and the contact seat to the receiving plate and achieves the rated torque.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is a disassembly and assembly fixture for the moving side component of the arc-extinguishing chamber of a GIS circuit breaker, including an operating panel, a fixed bracket and a plurality of positioning pins. The operating panel includes an axially penetrating central hole, and the plurality of positioning pins are fixed on the top surface of the operating panel and evenly distributed along the circumference of the operating panel; the top of the fixed bracket is connected to the bottom surface of the operating panel.

[0007] The disassembly and assembly fixture described above uses hexagon socket head cap screws as positioning pins. The top surface of the operating panel includes three threaded holes, and the three hexagon socket head cap screws are screwed into the corresponding threaded holes.

[0008] The aforementioned disassembly and assembly fixture has a fixing block as the fixing bracket, which is arranged outside the central hole; the top of the fixing block is welded to the bottom surface of the operating panel.

[0009] The disassembly and assembly fixture described above has a fixing block comprising two fixture fixing holes, the axis of which is parallel to the bottom surface of the operating panel.

[0010] The disassembly and assembly fixtures described above have a central hole diameter larger than the outer diameter of the hollow shaft of the moving side assembly receiving plate.

[0011] The disassembly and assembly fixture described above has the same number of locating pins as the number of connecting holes on the moving side component receiving plate, and the radial distance between the locating pins and the center of the operating plate is equal to the radial distance between the connecting holes and the center of the moving side component receiving plate.

[0012] The mounting bracket of the moving side assembly / disassembly fixture for the arc-extinguishing chamber of this utility model is fixed on the workbench, with the operating panel in a horizontal position. The receiving plate of the moving side assembly is placed on the top surface of the operating panel. After the connecting hole on the receiving plate is circumferentially positioned by the locating pin on the top surface of the operating panel, it can be easily threadedly connected to the connecting rod or contact seat to achieve the rated torque. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a front view of the moving side component of the arc-extinguishing chamber of a GIS circuit breaker in existing technology.

[0015] Figure 2 yes Figure 1 AA section view in the image.

[0016] Figure 3 This is a 3D view of the moving side component of the arc-extinguishing chamber of a GIS circuit breaker using existing technology.

[0017] Figure 4 This is a front view of the disassembly and assembly fixture for the moving side component of the arc-extinguishing chamber of the GIS circuit breaker according to an embodiment of this utility model.

[0018] Figure 5 This is a perspective view of the disassembly and assembly fixture for the moving side component of the arc-extinguishing chamber of the GIS circuit breaker according to an embodiment of this utility model.

[0019] Figure 6 This is a front view of the assembly of the connecting rod and the connecting plate on the disassembly and assembly fixture according to an embodiment of this utility model.

[0020] Figure 7 yes Figure 6 BB section view in the middle.

[0021] Figure 8 This is a perspective view of the assembly of the connecting rod and the connecting plate on the disassembly and assembly fixture according to an embodiment of this utility model.

[0022] Figure 9 This is a front view of the assembly of the contact seat and the receiving plate on the disassembly and assembly fixture according to an embodiment of this utility model.

[0023] Figure 10 yes Figure 9 CC section view in the image.

[0024] Figure 11 This is a perspective view of the assembly of the contact seat and the receiving plate on the disassembly and assembly fixture according to an embodiment of the present invention.

[0025] Figure 12 This is a front view of an embodiment of the present invention showing the assembly of a connecting rod, contact seat, and receiving plate on a disassembly and assembly fixture.

[0026] Figure 13 yes Figure 12 DD section view in the image.

[0027] Figure 14 This is a perspective view of an embodiment of the present invention showing the assembly of a connecting rod, a contact seat, and a receiving plate on a disassembly and assembly fixture. Detailed Implementation

[0028] The structure of the disassembly and assembly fixture for the moving side assembly of the arc-extinguishing chamber of the GIS circuit breaker in this embodiment is as follows: Figure 4 and Figure 5 As shown, the disassembly and assembly fixture 10 includes an operating plate 11, a fixed bracket, and three socket head cap screws 13 serving as locating pins. The operating plate 11 includes an axially penetrating central hole 111, and the three socket head cap screws 13 are fixed to the top surface of the operating plate 11 and are evenly distributed along the circumference of the operating plate 11.

[0029] In this embodiment, the fixing bracket of the disassembly and assembly fixture 10 is a fixing block 12, which is arranged outside the central hole 111. The top of the fixing block 12 is welded to the bottom surface of the operating panel 11.

[0030] The diameter of the center hole 111 is larger than the outer diameter of the hollow shaft 32 of the moving side assembly receiving plate.

[0031] The top surface of the operating panel 11 has three threaded holes, and three hex socket screws 13 are screwed into the corresponding threaded holes. The radial distance between the hex socket screws 13 and the center of the operating panel 11 is equal to the radial distance between the connecting hole 311 and the center of the moving side assembly receiving plate 30.

[0032] When the disassembly / assembly fixture 10 is in operation, the fixing block 12 can be clamped in the vise of the workbench or directly fixed to the workbench. The fixing block 12 includes two fixture fixing holes 121, the axis of which is parallel to the bottom surface of the operating panel 11. When the disassembly / assembly fixture 10 is directly fixed to the workbench, the two fixture fixing holes 121 are used to fix the disassembly / assembly fixture 10 to the vertical surface of the workbench with bolts or screws.

[0033] like Figures 6 to 8 As shown, in this embodiment of the invention, when assembling the connecting rod 20 and the receiving plate 30 on the disassembly and assembly fixture 10, the hollow shaft 32 of the receiving plate 30 passes downward through the central hole 111 of the operating plate 11, and the flange 31 of the receiving plate 30 sits on the top surface of the operating plate 11. Three hexagonal socket screws 13 on the operating plate 11, acting as locating pins, are inserted into the three arc-shaped connecting holes 311 on the flange 31 of the receiving plate 30 to circumferentially position the receiving plate 30. At this time, the shaft end of the connecting rod 20 can be inserted into the inner hole of the hollow shaft 32, and the external thread of the shaft end of the connecting rod 20 is connected to the internal thread in the inner hole of the hollow shaft 32 of the receiving plate. The operator uses a manual preset torque wrench with a pipe wrench head to apply torque to the connecting rod 20, so that the threaded connection between the connecting rod 20 and the receiving plate 30 reaches the rated assembly torque.

[0034] like Figures 9 to 11 As shown, in this embodiment of the invention, when assembling the contact seat 40 and the receiving plate 30 on the disassembly and assembly fixture 10, the hollow shaft 32 of the receiving plate 30 faces upwards, and the flange 31 of the receiving plate 30 sits on the top surface of the operating plate 11. Three hexagonal socket screws 13 on the operating plate 11, acting as locating pins, are inserted into the three arc-shaped connecting holes 311 on the flange 31 of the receiving plate 30 to circumferentially position the receiving plate 30. At this time, the inner hole of the contact seat 40 can be fitted over the hollow shaft 32 of the receiving plate 30, and the internal thread in the inner hole of the contact seat 40 connects with the internal thread of the hollow shaft 32 of the receiving plate. The operator uses a manual preset torque wrench and a pipe wrench head to apply torque to the contact seat 40, so that the threaded connection between the contact seat 40 and the receiving plate 30 reaches the rated assembly torque.

[0035] like Figures 12 to 14As shown, in this embodiment of the present invention, after assembling the connecting rod 20 and the receiving plate 30, when assembling the contact seat 40 and the receiving plate 30 on the disassembly and assembly fixture 10, the connecting rod 20 assembled with the receiving plate 30 passes downward through the central hole 111 of the operating plate 11. The flange 31 of the receiving plate 30 sits on the top surface of the operating plate 11. The three internal hexagon screws 13 on the operating plate 11, which serve as positioning pins, are inserted into the three arc-shaped connecting holes 311 on the flange 31 of the receiving plate 30 to perform circumferential positioning of the receiving plate 30. At this time, the hollow shaft 32 of the receiving plate 30 faces upward, and the inner hole of the contact seat 40 can be fitted over the hollow shaft 32 of the receiving plate 30. The internal thread in the inner hole of the contact seat 40 is connected to the internal thread of the hollow shaft 32 of the receiving plate.

[0036] The fixing bracket of the disassembly and assembly fixture for the moving side component of the GIS circuit breaker arc-extinguishing chamber in the above embodiments of this utility model is fixed on the workbench, the operating panel is in a horizontal state, and the receiving plate of the moving side component is placed on the top surface of the operating panel. After the connecting hole on the receiving plate is circumferentially positioned by the hexagonal socket screws acting as locating pins on the top surface of the operating panel, it can be easily threaded to the connecting rod or contact seat using a torque wrench to achieve the rated torque.

Claims

1. A jig for disassembling and assembling the moving side assembly of the arc-extinguishing chamber of a GIS circuit breaker, comprising an operating panel, characterized in that, It includes a fixed bracket and a plurality of positioning pins. The operating plate includes an axially penetrating central hole. The plurality of positioning pins are fixed on the top surface of the operating plate and are evenly distributed along the circumference of the operating plate. The top of the fixed bracket is connected to the bottom surface of the operating plate.

2. The disassembly and assembly fixture according to claim 1, characterized in that, The locating pin is a hexagon socket screw, and the top surface of the operating panel includes three threaded holes. The three hexagon socket screws are screwed into the corresponding threaded holes.

3. The disassembly and assembly fixture according to claim 1, characterized in that, The fixed bracket is a fixed block, which is arranged outside the central hole; the top of the fixed block is welded to the bottom surface of the operating panel.

4. The disassembly and assembly fixture according to claim 1, characterized in that, The fixing block includes two fixture fixing holes, the axis of which is parallel to the bottom surface of the operating panel.

5. The disassembly and assembly fixture according to claim 1, characterized in that, The diameter of the central hole is larger than the outer diameter of the hollow shaft of the moving side assembly receiving plate.

6. The disassembly and assembly fixture according to claim 1, characterized in that, The number of locating pins is the same as the number of connecting holes on the moving side assembly plate, and the radial distance between the locating pins and the center of the operating panel is equal to the radial distance between the connecting holes and the center of the moving side assembly plate.

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