Operating tool for hot-line replacement of ring-type mount-point suspended insulator and operating method thereof
A technology of insulator string and live replacement, which is applied in the direction of overhead line/cable equipment, etc., can solve the problems of high difficulty of operation, cumbersome operation process, small safety clearance, etc., and achieve the effect of simple operation method, complex structure and small operation space
Active Publication Date: 2013-07-03
STATE GRID CORP OF CHINA +1
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Problems solved by technology
However, the surface of this type of steel pipe pole is smooth, the cross arm is short and narrow, resulting in a narrow operating space, and the steel pipe pole cross arm structure and insulator string hanging point types are various, generally double or more than four rounds are erected on the same tower, and the safety clearance It is also small; in contrast, the traditional working tools and methods for live replacement of insulators require the cooperation of multiple people, and sufficient operating space and safety clearance are required. The tools are scattered and the operation process is relatively cumbersome. None of the safety gaps can meet the requirements of traditional operations, and the operation is extremely difficult. Therefore, there are currently no operating tools and methods for live replacement of steel pipe pole insulators on 110 kV lines, especially for ring-type hanging point suspension insulator strings. Since there is no place on the cross arm for ordinary clamps to be installed, if the suspension ring at the suspension of the insulator is used, the structure of the suspension ring is thin and narrow, which cannot meet the requirements of safe operation
As the reliability of power supply becomes higher and higher, if you still rely on power grid outage operations, you will not be able to adapt to the requirements of the power grid development situation
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[0041] Best practice:
[0042] The operating tool for replacing the hanging insulator with the ring type hanging point with electricity includes a fixture and a wire tightening device. The fixture includes a main splint 1 and an auxiliary splint 2, the details are as follows:
[0043] The structure of the main splint refers to the attached figure 1 , attached figure 2 and attached image 3, there is a crossbeam 11 on the main splint, the two ends of the crossbeam 11 are symmetrically distributed with annular connecting parts 12 perpendicular to the crossbeam, the middle position of the crossbeam 11 is equipped with an operation hole 13, and the two sides of the operation hole 13 are symmetrically distributed with positioning holes 14; the main splint crossbeam Part 11 protrudes forward with a long strip-type limiter 15, which is an integrated structure with the beam 11. The shape of both sides is the same as the inner edge shape of the insulator string connection ring, and ...
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The invention relates to a device for live replacement of insulators on a high-voltage line, in particular to a working tool and a working method for live replacement of hanging ring type suspension insulators. It is suitable for 110kV~220kV transmission line steel pole cross-arm hanging ring type hanging point or similar ring type hanging point type power pole tower. The operation tool is mainly a clamping fixture. The original fastening bolt is used as the operation connection point, which integrates movement and operation in one place, which solves the problems of complex structure and cumbersome operation steps of the original operation tool. The structure is simple and the parts less, easy to operate; the operation method based on this operation tool is a live replacement operation of the ring method, which is simple and easy to operate, requires a small operating space, and has low requirements for safety clearances. The live replacement operation of insulators avoids a series of economic, production and power supply problems caused by power outages, and fills the gap in the maintenance of steel pipe pole power tower insulators during live work.
Description
technical field [0001] The invention relates to a device for live replacement of insulators on a high-voltage line, in particular to a working tool and a working method for live replacement of ring-type hanging point suspension type insulator strings. It can be applied to 110 kV~220 kV transmission line steel pole cross-arm hanging ring type hanging point or similar ring type hanging point type power pole tower. Background technique [0002] In recent years, in the construction of urban power grids, a large number of steel pipe poles have been used as materials for the construction of high-voltage power poles and towers. This is because steel pipe poles occupy less space, require less investment, and are fast in construction, beautiful and practical. However, the surface of this type of steel pipe pole is smooth, the cross arm is short and narrow, resulting in a narrow operating space, and the steel pipe pole cross arm structure and insulator string hanging point types are v...
Claims
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IPC IPC(8): H02G1/02
Inventor 陈国信陈安郑联发许仁来严有祥游小华洪炳黑郭懂事余恺吴李焕
Owner STATE GRID CORP OF CHINA