220kV isolating switch and grounding wire mechanical locking device
By designing a mechanical locking device for 220kV isolating switch and grounding wire, the mechanical locking structure is used to ensure a firm connection between the isolation switch and the grounding wire, the problem of vicious misoperation accidents caused by the lack of mechanical chain mechanism in the prior art is solved, and the power system is realized safe and reliable operation.
Patent Information
- Application Number
- CN202411487149.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-02-18
AI Technical Summary
In the prior art, there is a lack of a mechanical linkage mechanism between the isolating switch and the grounding wire, resulting in a vicious misoperation accident with a grounding wire-connected isolation switch, threatening the safety and stability of the power grid and substation equipment and the personal safety of the operators.
Design a 220kV isolating switch and grounding wire mechanical locking device, including locking device, vertical connecting rod of isolating switch, operating handle, grounding wire connector, grounding bolt, nut, locking rod, snap, fixing plug, return spring, etc. In part, the mechanical locking structure ensures a firm connection between the isolating switch and the grounding wire.
It is realized that the grounding wire cannot be installed when the isolation switch is closed. The grounding wire can only be installed after the isolation switch is opened. When the grounding wire exists, the isolation switch is locked in the opening position to avoid vicious misoperation accidents and ensure that The power system is safe and reliable.
Smart Images
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Abstract
Description
Technical Field
[0001] The invention mainly relates to the field of mechanical locking of disconnecting switches, and mainly relates to a mechanical locking device for a 220kV disconnecting switch and a grounding wire. Background Art
[0002] In the power system, in order to ensure the safe and reliable operation of power equipment and personal safety, this is also one of the first and most important requirements. At present, there is no mechanical interlocking mechanism between the disconnector and the grounding wire, and there are design defects. When the disconnector or the conductor and the line are equipped with a grounding wire, the disconnector can be closed. If the interval is wrong, it will cause a malicious misoperation accident of closing the disconnector with the grounding wire, which will bring great hidden dangers to the safety and stability of the power grid and substation equipment and the personal safety of operators. In order to ensure the safety and stability of the power grid and substation equipment and the personal safety and reliability of operators, and to prevent the malicious misoperation accident of closing the disconnector with the grounding wire, 220kV disconnectors and grounding wire mechanical locking devices must be used. Summary of the invention
[0003] In view of this, the purpose of the present invention is to provide a 220kV disconnector and grounding wire mechanical locking device, which overcomes the defects of the prior art and mainly solves the shortcomings of the prior art. It provides a 220kV disconnector and grounding wire mechanical locking device with the advantages of advanced design, simple and reasonable structure, complete functions, reliable and firm locking, etc.
[0004] To achieve the above-mentioned purpose, an embodiment of the present invention provides a 220kV disconnector and grounding wire mechanical locking device, including: a locking device, a vertical connecting rod of the disconnector, an operating handle, a grounding wire connector, a grounding bolt, a nut, a locking rod, a buckle, a fixing plug, a reset spring, a mounting hole, a locking hole, a fixing hole I, a grounding connecting hole, a fixing hole II, and a connecting hole; the locking device consists of a locking rod, a buckle, a fixing plug, a reset spring, a mounting hole, a fixing hole I, a fixing hole II, and a connecting hole; the locking rod is inserted into the reset spring and installed in the mounting hole; the fixing plug is arranged on the locking rod through the connecting hole and squeezed into the mounting hole; the buckle is inserted into the fixing hole I and the fixing hole II to fix the fixing plug.
[0005] The grounding wire connector is arranged on the grounding bolt through the grounding connection hole, and then the nut is installed on the grounding bolt, and then the nut is tightened to insert the locking rod into the locking hole; the locking device is integrated with the grounding bolt; the vertical connecting rod of the isolating switch is integrated with the operating handle; the entire locking device is made of metal.
[0006] The beneficial effects of the present invention are: when the isolating switch is in the closed position, the grounding wire cannot be installed. The grounding wire can only be installed after the isolating switch is disconnected. When the grounding wire is installed on the isolating switch or the conductor and the line, the isolating switch cannot be closed at this time. The isolating switch is locked in the open position. The isolating switch can only be closed after the grounding wire is removed, which ensures the safe and reliable operation of the electrical network or equipment in the power system and avoids the occurrence of malicious misoperation accidents when closing the isolating switch with the grounding wire. The 220kV isolating switch and grounding wire mechanical locking device has the advantages of advanced design, simple and reasonable structure, complete functions, reliable and firm locking, etc. It is a new type of 220kV isolating switch and grounding wire mechanical locking device. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0008] Figure 1 This is a schematic diagram of the locking structure of the 220kV disconnector and grounding wire locking device of the present invention.
[0009] Figure 2 This is a schematic diagram of the open structure of the 220kV disconnector and grounding wire locking device of the present invention.
[0010] Figure 3 This is a broken view of the locking structure of the 220kV disconnector and grounding wire locking device of the present invention
[0011] Figure 4 It is a structural schematic diagram of a 220kV disconnector and grounding wire locking device of the present invention.
[0012] Description of reference numerals: 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, fixing plug 9, reset spring 10, mounting hole 11, locking hole 12, fixing hole I13, grounding connection hole 14, fixing hole II15, connection hole 16; DETAILED DESCRIPTION
[0013] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0014] Figure 1 This is a schematic diagram of the locking structure of the 220kV disconnector and grounding wire locking device of the present invention. Figure 2 This is a schematic diagram of the open structure of the 220kV disconnector and grounding wire locking device of the present invention. Figure 3 This is a broken view of the locking structure of the 220kV disconnector and grounding wire locking device of the present invention. Figure 4 It is a schematic diagram of the structure of the 220kV disconnector and grounding wire locking device of the present invention. Figure 1 , 2 As shown in Figures 3 and 4, the 220kV disconnector and grounding wire mechanical locking device of the present invention comprises: a locking device 1, a disconnector vertical connecting rod 2, an operating handle 3, a grounding wire connector 4, a grounding bolt 5, a nut 6, a locking rod 7, a buckle 8, a fixing plug 9, a reset spring 10, a mounting hole 11, a locking hole 12, a fixing hole I13, a grounding connection hole 14, a fixing hole II15, and a connection hole 16.
[0015] As can be seen from the figure, the locking device consists of a locking rod 7, a buckle 8, a fixing plug 9, a reset spring 10, a mounting hole 11, a fixing hole I13, a fixing hole II15, and a connecting hole 16. The locking rod 7 is inserted into the reset spring 10 and installed in the mounting hole 11. The fixing plug 9 is arranged on the locking rod 7 through the connecting hole 16 and squeezed into the mounting hole 11. The buckle 8 is inserted into the fixing hole I13 and the fixing hole II15 to fix the fixing plug 9. The grounding wire connector 4 is arranged on the grounding bolt 5 through the grounding connecting hole 14, and then the nut 6 is installed on the grounding bolt 5. Then, the nut 6 is tightened to insert the locking rod 7 into the locking hole 12 to realize mechanical locking between the isolating switch and the grounding wire.
[0016] When the isolating switch is in the closed position, the grounding wire cannot be installed. The grounding wire can only be installed after the isolating switch is pulled open. When the isolating switch or the wire and the line are equipped with a grounding wire, the isolating switch cannot be closed at this time. The isolating switch is locked in the open position. Only when the grounding wire is removed, the reset spring 10 resets the locking rod 7 to close the isolating switch. When the isolating switch or the wire and the line are equipped with a grounding wire, the mechanical locking between the isolating switch and the wire is firm and reliable. The mechanical principle is utilized, and the design is advanced, the structure is simple and reasonable, the functions are complete, and the locking is reliable and firm. The purpose of preventing the malicious misoperation accident of closing the isolating switch with a grounding wire is achieved, and the safe and reliable operation of the power system equipment is ensured, and benefits are created at the same time.
[0017] In addition to the above embodiments, all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.
Claims
1. A 220kV disconnector and grounding wire mechanical locking device, characterized in that: include: A locking device, a vertical connecting rod of the isolating switch, an operating handle, a grounding wire connector, a grounding bolt, a nut, a locking rod, a buckle, a fixing plug, a reset spring, a mounting hole, a locking hole, a fixing hole I, a grounding connecting hole, and a fixing hole II; the locking device consists of a locking rod, a buckle, a fixing plug, a reset spring, a mounting hole, a fixing hole I, a fixing hole II, and a connecting hole; the locking rod is inserted into the reset spring and installed in the mounting hole; the fixing plug is arranged on the locking rod through the connecting hole and squeezed into the mounting hole; the buckle is inserted into the fixing hole I and the fixing hole II to fix the fixing plug.
2. The 220kV disconnector and grounding wire mechanical locking device according to claim 1 is characterized in that: The grounding wire connector is arranged on the grounding bolt through the grounding connection hole, and then the nut is installed on the grounding bolt, and then the nut is tightened to insert the locking rod into the locking hole; the locking device is integrated with the grounding bolt; the vertical connecting rod of the isolating switch is integrated with the operating handle; the entire locking device is made of metal.