Mountainous-area anti-up pull transmission line straight-line tower with Chinese character "ba"-shaped glass fiber reinforced plastic strings

Abstract

The invention relates to a mountainous-area anti-up pull transmission line straight-line tower with Chinese character "ba"-shaped glass fiber reinforced plastic strings. The straight-line tower comprises a tower body, a ground wire support, an upper cross arm, an intermediate cross arm, a lower cross arm, and Chinese character "ba"-shaped glass fiber reinforced plastic strings. The ground wire support, the upper cross arm, the intermediate cross arm, and the lower cross arm are arranged at the tower body. The Chinese character "ba"-shaped glass fiber reinforced plastic strings are formed by cylindrical glass fiber reinforced plastic insulation rods, connecting plates and suspension wire clamps; and the lower ends of the two string units of the Chinese character "ba"-shaped glass fiber reinforced plastic strings are respectively connected with the suspension wire hanging plates of the upper cross arm, the intermediate cross arm, and the lower cross arm by Z-shaped hanging plates. According to the invention, because the voltage withstanding and insulating performances of the glass fiber reinforced plastic material are combined with the loading feature of the Chinese character "ba"-shaped string, the phenomenon of shedding or damage of the conventional suspension string under pressure can be avoided, the lead wind offset at the tower head is effectively limited, and the electric clearance distance is guaranteed.

Description

[0001] Technical field: [0002] The invention relates to the technical field of high-voltage transmission lines, in particular to a linear tower for anti-uplift transmission lines in mountainous areas using glass fiber reinforced plastic strings. Background technique: [0003] In mountainous power transmission lines, due to terrain restrictions, when the straight pole tower is located in a mountain stream, the vertical span is negative, and the upward pull-out force of the wires on both sides will cause the suspension string to be stressed, resulting in pressure damage to the insulator string and causing the live part to be damaged by the tower. The safety gap of the components is not enough, and the existing conventional solutions are: ① adjust the position of the tower; ② add a heavy hammer; ③ reduce the design stress of the wire; However, the main limitations of the above schemes are as follows: [0004] 1) Adjusting the position, raising the tower position, changing th...

AI Technical Summary

Problems solved by technology

[0004] 1) Adjusting the position, raising the tower position, changing the tower type, adding a weight and reducing the design stress of the wire can only reduce the swing angle in a small range, and the effect is not obvious

[0005] 2) Replacing the linear tower with a strain tower can completely solve the problem of insufficient clearance caused by the swing angle and excessive pull-out force of the wire, but it will lead to a substantial increase in the project cost

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