A kind of fitting for live replacement of tension insulator strings for transmission lines above 500kV and its use method

Abstract

A metal fitting for live replacement of tension insulator strings for power transmission lines above 500KV and its use method, comprising a fitting body (3), one side of the fitting body is connected to a first connecting plate (7) in the shape of an isosceles triangle or an isosceles trapezoid ), the cross arm side of the first connecting plate (7) is connected with multiple strings of insulator strings with a total weight of several tons, the other side of the fitting body is connected with the second connecting plate (14), and the second connecting plate (14 ) is transmitted to the first connecting plate (7), the second connecting plate (14) is used to parallelly and evenly connect multi-split conductors, and the fitting body (3) is used to connect the first connecting plate (7) A groove for embedding and fixing the hypotenuse of the first connecting plate (7) is formed at the position, the shape of the groove closely matches the hypotenuse of the first connecting plate, and the fitting body (3) is provided with a The hook (1) and walk two and three tackles. According to the present invention, the detachment weight of the tension insulator string above 500KV can be reduced, and the hardware is not easy to slip out, which reduces the difficulty of work and facilitates easy live swapping of the insulator string.

Description

technical field [0001] The invention relates to an electric power maintenance tool, in particular to a metal tool for live replacement of tension insulator strings for power transmission lines above 500KV and a use method thereof. When the above 500KV tension insulator strings are replaced, the fittings can be used in conjunction with the two-way three-way block and the winch, which can reduce the detachment weight when the 500KV above tension insulator strings are replaced live, and the fittings are not easy to slip out, reducing the work load. Difficulty, it is convenient to easily replace the insulator string with electricity. Background technique [0002] In the past, extra-high voltage transmission lines, such as 220kV transmission lines, generally used double-split conductors, and the matching insulators also used double-string types. Its live exchange transmission line and its string insulators are important items in live work projects, and it is necessary to tighten...

AI Technical Summary

Problems solved by technology

In addition, due to the limitations of existing production specifications, usage habits, and manufacturing cost requirements, the existing connecting plates or fixtures used in series for live exchange insulators and used as main connecting components are standardized isosceles triangles or isosceles trapezoids, with oblique As a result, the operation of the tension insulator strings is unstable and easy to slip out, resulting in the inability to easily replace the tension insulator strings above 500KV, and even lead to safety accidents in severe cases

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