A lightweight UHV composite insulating cross-arm filled with inner

Abstract

The invention discloses an inner-filled light-weight ultra-high voltage composite insulating cross-arm, which belongs to the technical field of insulating cross-arm for power facilities, and comprises a main cylinder body, a left flange, a right flange and an inner filling body; the main cylinder body is a ring Oxygen glass fiber tube, the left and right ends are respectively connected to the left flange and the right flange, the left flange is connected to the iron tower frame, and the right flange is connected to the wire hanging point hardware; the inner filling body is densely filled in the In the cylindrical space formed by the main cylinder body, the left flange and the right flange, the inner filling body is made of modified epoxy resin material. The invention is filled with light ultra-high voltage composite insulation cross arm, which has light weight and good insulation performance, and avoids inflation and saves post-commissioning monitoring work.

Description

technical field [0001] The invention relates to the technical field of insulating cross-arms for power facilities, in particular to an inner-filled lightweight UHV composite insulating cross-arm. Background technique [0002] At present, my country's transmission lines are still operating in the form of traditional iron towers, steel pipe poles, and concrete poles equipped with steel cross arms and suspended insulator strings. There are problems such as heavy weight, construction, transportation, and operation and maintenance difficulties. The higher the voltage level of the transmission line, the longer the corresponding insulator string, which increases the height of the iron tower, increases the steel consumption of the iron tower, and increases the workload for the daily operation and maintenance of the transmission line. At present, UHV transmission lines are generally more than 60 meters; the average height of the double-circuit 1000 kV line tower is about 100 meters. ...

AI Technical Summary

Problems solved by technology

For a single solid insulating cross-arm, the manufacturing process of the insulating cross-arm mandrel above 500kV is difficult, the production cost is high, and the quality of the finished product is high, and transportation and installation are difficult.

The insulating crossarm of the hollow pipe is generally filled with nitrogen gas as the inner insulation. The biggest problem is that there is a risk of insulation breakdown after air leakage, which is not safe enough. In addition, a barometer must be installed after it is put into operation, which increases the service life. post monitoring work

Therefore, the composite insulation cross-arm has been unable to be popularized on a large scale at high voltage levels

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