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Connecting plate for replacing 220kV double bundle conductor strain insulator with centricity and method thereof

A technology of double-split conductors and tensile insulators, which is applied to the suspension devices of cables, overhead lines/cable equipment, etc., can solve the problems affecting the normal operation of transmission lines, and there is no live replacement of 220kV double-split conductors. Time-saving effect

Inactive Publication Date: 2010-06-23
DALI POWER SUPPLY BUREAU YUNNAN POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the use of double-split conductors in 220kV lines has become the main wiring method for 220kV lines. When replacing the tension insulators of 220kV double-split conductors, it is usually necessary to switch off and cut off the power, which affects the normal operation of the transmission line.
Currently there is no means to replace the tension insulators of 220kV double-split conductors live

Method used

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  • Connecting plate for replacing 220kV double bundle conductor strain insulator with centricity and method thereof
  • Connecting plate for replacing 220kV double bundle conductor strain insulator with centricity and method thereof
  • Connecting plate for replacing 220kV double bundle conductor strain insulator with centricity and method thereof

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Embodiment Construction

[0018] Such as figure 1 As shown, the present invention includes a tie plate 1 and a screw 2 connected to each other in a transverse direction; an opposite connecting plate 3 is symmetrically installed on the outer ends of the pulling plate and the screw mandrel, and a connecting hole 4 is provided at the free end of the connecting plate. The connecting plate 3 is an L-shaped connecting plate, one end of which is connected with the pull plate by a screw 5, and the other end is provided with a connecting hole 4. The pull plate 1, the screw mandrel 2 and the connecting plate 3 are all insulators.

[0019] Such as figure 2 As shown, on the cross arm 6 of the power tower, a two-joint plate 7 with a set of mounting holes 10 is installed through components, and an insulator 8 is installed on the two-joint plate, and the insulator 8 is installed on the two-joint plate 7 through an insulator pin 9 . When the insulator 8 needs to be replaced, proceed as follows:

[0020] (1) The el...

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Abstract

The invention relates to a connecting plate for replacing an 220kV double bundle conductor strain insulator with centricity and a method thereof; the connecting plate comprises a pulling plate (1) and a screw rod (2) which are connected laterally, opposite junction plates (3) are symmetrically arranged at the outer ends of the pulling plate and the screw rod, and the free end of the junction plate is provided with a connecting hole (4); when the insulator is replaced, the insulation pulling plate is arranged at outer side of an insulator chain, the horizontal load supported by the insulator is transferred by tightening the screw rod, an insulator cradle is used for solving vertical load generated by the own weight after the horizontal load is transferred, and excessive traction force is controlled simultaneously; and finally, the electrical connection of the insulator and the lead wire is disconnected; the invention realizes electrified replacement of the 220kV double bundle conductor strain insulator, the operating process is time saving and labor saving, and is safe and reliable.

Description

technical field [0001] The invention belongs to the technical field of a maintenance tool structure for a power transmission line and a method for using the maintenance tool to replace a tension insulator of a 220kV double-split conductor with electricity. Background technique [0002] The transmission line is operated in the field for a long time, and the insulators of the line will have different degrees of zero value, low value or be struck by lightning due to the long-term impact of power frequency voltage, atmospheric overvoltage, operating overvoltage and mechanical load and the influence of the external environment. etc., reduce the insulation level of the line, and affect the safe and stable operation of the transmission line. For this reason, in the maintenance of transmission lines, it is often necessary to replace insulators. In recent years, the use of double-split conductors for 220kV lines has become the main wiring method for 220kV lines. When replacing the t...

Claims

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Application Information

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IPC IPC(8): H02G1/02H02G7/05
Inventor 李仁杰李建云黄修乾史良池杨学全张灿昆赖炬强杨军苏沛轩熊西林杨文波肖鹏飞张玉春张建飞杨晋赵向东
Owner DALI POWER SUPPLY BUREAU YUNNAN POWER GRID
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