220kV isolating switch and grounding wire mechanical locking device
By designing a mechanical interlocking system that includes an interlocking device, the problem of the lack of mechanical interlock between the disconnecting switch and the grounding wire is solved, and a reliable mechanical interlock between the disconnecting switch and the grounding wire is achieved, avoiding accidental misoperation and ensuring the safe operation of the power system.
Patent Information
- Application Number
- CN202422555513.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-10-15
AI Technical Summary
The existing 220kV disconnector switch lacks a mechanical interlocking mechanism with the grounding wire, which could lead to a serious misoperation accident of closing the disconnector switch with the grounding wire connected, endangering the safety and stability of the power grid and substation equipment, as well as the personal safety of operators.
Design a mechanical interlocking system comprising a locking device, a vertical connecting rod of the disconnecting switch, an operating handle, a grounding wire connector, a grounding bolt, a nut, a locking rod, a buckle, a fixing plug, and a return spring, to ensure that the disconnecting switch can only be closed after the grounding wire is removed, thereby achieving mechanical interlocking.
It effectively prevents serious misoperation accidents caused by closing disconnecting switches with grounding wires, ensures the safe and reliable operation of the power system, and guarantees the safety of equipment and personnel.
Smart Images
Figure CN223612298U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of mechanical locking of disconnectors, and particularly relates to a 220kV disconnector and grounding wire mechanical locking device. BACKGROUND
[0002] In the power system, in order to ensure the safe and reliable operation of power equipment and personal safety, which is one of the primary and most important requirements, there is no mechanical interlocking mechanism between the disconnectors and the grounding wires at present, which has a design defect. When the disconnector or the wire and the line are provided with the grounding wire, the disconnector can be closed, such as when the interval is wrong, which causes a vicious misoperation accident of closing the disconnector with the grounding wire, and brings great hidden troubles to the safety and stability of the power grid and the substation equipment and the personal safety of the operating personnel. In order to ensure the safety and stability of the power grid and the substation equipment and the personal safety of the operating personnel, and prevent the vicious misoperation accident of closing the disconnector with the grounding wire, the 220kV disconnector and grounding wire mechanical locking device must be used. CONTENT OF THE UTILITY MODEL
[0003] Therefore, the purpose of the present application is to provide a 220kV disconnector and grounding wire mechanical locking device, which overcomes the defects of the prior art and mainly solves the problems of the prior art. The present application provides a 220kV disconnector and grounding wire mechanical locking device with advanced design, simple and reasonable structure, complete functions, reliable and firm locking and other advantages.
[0004] In order to achieve the above-mentioned purpose, one embodiment of the present application provides a 220kV disconnector and grounding wire mechanical locking device, which comprises: a locking device, a disconnector vertical connecting rod, an operating handle, a grounding wire connector, a grounding bolt, a nut, a locking rod, a buckle, a fixed plug, a reset spring, a mounting hole, a locking hole, a fixed hole I, a grounding connection hole, a fixed hole II, and a connecting hole. The locking device is composed of the locking rod, the buckle, the fixed plug, the reset spring, the mounting hole, the fixed hole I, the fixed hole II, and the connecting hole. The locking rod is inserted into the reset spring and mounted in the mounting hole. The fixed plug is arranged on the locking rod through the connecting hole and is pressed in the mounting hole. The buckle is inserted into the fixed hole I and the fixed hole II to fix the fixed plug.
[0005] The grounding wire connector is arranged on the grounding bolt through the grounding connection hole, and then the nut is mounted on the grounding bolt. Then the nut is tightened to insert the locking rod into the locking hole. The locking device and the grounding bolt are integrated. The disconnector vertical connecting rod and the operating handle are integrated. The entire locking device is made of metal material.
[0006] The utility model discloses beneficial effect is: disconnecting switch closing position, cannot install ground wire, only disconnecting switch pulls open after breaking, can install ground wire, when disconnecting switch or wire and line install ground wire, this time cannot close disconnecting switch, close disconnecting switch and lock in the opening position, only when ground wire removes, can close disconnecting switch, guarantee the safe and reliable operation of electrical network or equipment in power system, avoid the vicious misoperation accident of closing disconnecting switch with ground wire. BRIEF DESCRIPTION OF DRAWINGS
[0007] In order to make the technical scheme of the embodiments of the utility model or the prior art clearer, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the following description drawings are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.
[0008] Figure 1 It is the locking structure schematic view of the utility model 220kV disconnecting switch, ground wire locking device
[0009] Figure 2 It is the open structure schematic view of the utility model 220kV disconnecting switch, ground wire locking device
[0010] Figure 3 It is the locking structure sectional view of the utility model 220kV disconnecting switch, ground wire locking device
[0011] Figure 4 It is the structure schematic view of the utility model 220kV disconnecting switch, ground wire locking device.
[0012] Mark explanation: locking device 1, disconnecting switch vertical connecting rod 2, operating handle 3, ground wire connector 4, ground bolt 5, nut 6, locking rod 7, buckle 8, fixed plug 9, reset spring 10, mounting hole 11, locking hole 12, fixed hole I 13, ground connection hole 14, fixed hole II 15, connecting hole 16; DETAILED DESCRIPTION
[0013] In order to make the technical scheme of the embodiments of the utility model or the prior art clearer, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the following description drawings are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.
[0014] Figure 1 is a locking structure schematic view of the 220kV isolating switch and grounding wire locking device of the utility model, Figure 2 is an open structure schematic view of the 220kV isolating switch and grounding wire locking device of the utility model, Figure 3 is a locking structure sectional view of the 220kV isolating switch and grounding wire locking device of the utility model, Figure 4 is a structure schematic view of the 220kV isolating switch and grounding wire locking device of the utility model, Figure 1 、 2 , 3, 4 shown, the 220kV isolating switch and grounding wire mechanical locking device in the utility model includes: locking device 1, isolating switch vertical connecting rod 2, operating handle 3, grounding wire connector 4, grounding bolt 5, nut 6, locking rod 7, buckle 8, fixed plug 9, reset spring 10, mounting hole 11, locking hole 12, fixed hole I 13, grounding connection hole 14, fixed hole II 15, connecting hole 16.
[0015] As shown in the drawing, the locking device is composed of locking rod 7, buckle 8, fixed plug 9, reset spring 10, mounting hole 11, fixed hole I 13, fixed hole II 15, connecting hole 16, locking rod 7 is inserted into reset spring 10 and installed in mounting hole 11, fixed plug 9 is arranged on locking rod 7 through connecting hole 16 and is extruded in mounting hole 11, buckle 8 is inserted into fixed hole I 13 and fixed hole II 15 to fix fixed plug 9, grounding wire connector 4 is arranged on grounding bolt 5 through grounding connection hole 14, then nut 6 is installed on grounding bolt 5, then locking rod 7 is fixed in locking hole 12 by tightening nut 6, and mechanical locking between the isolating switch and the grounding wire is realized.
[0016] When the isolating switch is in the closed position, the grounding wire cannot be installed, and only when the isolating switch is pulled open can the grounding wire be installed, when the isolating switch or the conductor and the line is provided with the grounding wire, the isolating switch cannot be closed, and the isolating switch is locked in the open position, and only when the grounding wire is removed, the locking rod 7 is reset by the reset spring 10 to close the isolating switch. Reach the mechanical locking between the isolating switch or the conductor and the line provided with the grounding wire and the isolating switch is firm and reliable. The mechanical principle is used, and the design is advanced, the structure is simple and reasonable, the function is complete, the locking is reliable and firm and the like. Achieve the purpose of preventing the vicious misoperation accident of closing the isolating switch with the grounding wire, and ensure the safe and reliable operation of the power system equipment. At the same time, benefits are created.
[0017] In addition to the above embodiments, any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the utility model.
Claims
1. A 220 kV isolating switch, grounding wire mechanical locking device, characterized in that, Include: Locking device, disconnecting switch vertical connecting rod, operating handle, ground wire connector, ground bolt, nut, locking rod, buckle, fixed plug, reset spring, mounting hole, locking hole, fixed hole I, ground connection hole, fixed hole II; The locking device is composed of a locking rod, a buckle, a fixed plug, a reset spring, a mounting hole, a fixed hole I, a fixed hole II, and a connecting hole; The locking rod is inserted into the reset spring and mounted in the mounting hole; The fixed plug is arranged on the locking rod through the connecting hole and pressed in the mounting hole; The buckle is inserted into the fixed hole I and the fixed hole II to fix the fixed plug.
2. The 220 kV disconnector, grounding line mechanical locking device according to claim 1, characterized in that: The ground wire connector is arranged on the ground bolt through the ground connection hole, and then the nut is mounted on the ground bolt. Then, the locking rod is inserted into the locking hole by tightening the nut; The locking device is integrated with the ground bolt; The disconnecting switch vertical connecting rod is integrated with the operating handle; The entire locking device is made of metal.