CN205046931U - Steel pipe shaft tower is cut -off to two sides in two return circuits that adopt triangle -shaped cross arm to arrange - Google Patents

Abstract

The utility model relates to a double-circuit double-side breaking steel pipe tower adopting a triangular cross-arm arrangement. It includes a tower body, a top-level ground wire cross-arm, an upper-level wire cross-arm, and a lower-layer wire cross-arm. One triangular cross arm is arranged on the broken side; the upper conductor cross arm is divided into three layers, each layer is arranged with two cross arms parallel to the target breaking line from the tower body, and one side cross arm is arranged perpendicular to the target breaking line from the back of the tower body to the breaking side ; The lower conductor cross-arm is divided into three layers, and each layer is arranged with a triangular cross-arm from the tower body to the breaking side. The utility model only adopts one base pole tower to realize double-circuit double-side disconnection, which reduces the number of pole towers; after disconnection, a four-circuit circuit is formed to continue routing, avoiding the use of four-circuit branch poles, and does not change the wire layout of adjacent pole towers, reducing the Possibility of renovation of adjacent tower.

Description

A kind of double loop bilateral adopting triangle cross-arm to arrange cut-offs steel pipe tower

technical field:

The utility model relates to ultra-high-tension power transmission line technical field, particularly relates to a kind of double loop bilateral adopting triangle cross-arm to arrange and cut-offs steel pipe tower.

background technology:

In existing High Voltage Transmission Line Engineering, often occur that double back transmission line cut-offs the situation accessing newly-built transformer station simultaneously, be typically employed in newly-built two base double loop strain rod towers below former double-circuit line, form two double-circuit lines and continue cabling, along with high pressure corridor, city is nervous gradually, after requiring line disconnection, form four loop line road cablings by four branch of a circuit bars, it is more to there is newly-built shaft tower quantity in this mode of cut-offfing, floor space is comparatively large, and the problems such as line corridor is wider implement difficulty larger.

summary of the invention:

The purpose of this utility model is to provide a kind of double loop bilateral adopting triangle cross-arm to arrange and cut-offs steel pipe tower, only adopts a base shaft tower to realize double loop bilateral and cut-offs, decrease shaft tower quantity; Cut-off rear formation four loop and continue cabling, avoid the use of four branch of a circuit bars, do not change the wire arrangements mode of adjacent shaft tower, reduce the possibility of adjacent tower transformation.

In order to solve Problems existing in background technology, the utility model is by the following technical solutions: it comprises tower body, top layer ground wire cross-arm, topping wire cross-arm, lower layer conductor cross-arm, described tower body top is provided with top layer ground wire cross-arm, be provided with topping wire cross-arm below top layer ground wire cross-arm, below topping wire cross-arm, be provided with lower layer conductor cross-arm;

Described top layer ground wire cross-arm cut-offs side dorsad from tower body and arranges while cut-off the cross-arm of circuit perpendicular to target, arranges triangle cross-arm towards cut-offfing side;

Described topping wire cross-arm divides three layers, and every layer is cut-off line arrangement both sides cross-arm from tower body parallel object, cut-offs side vertical target dorsad cut-off line arrangement cross-arm from tower body;

Described lower layer conductor cross-arm divides three layers, arranges triangle cross-arm for every layer from tower body towards cut-offfing side;

Three limit cross-arms of described triangle cross-arm are that isosceles triangle is arranged, from the drift angle of tower body fixed triangle shape cross-arm, the base parallel object of triangle cross-arm cut-offs line direction.

The utility model has the following advantages compared to prior art:

1) do not change target to cut-off line conductor and arrange, reduce target and cut-off the possibility that the adjacent shaft tower of circuit is difficult to meet electric clearance requirement;

2) only utilize a basic patent shaft tower can complete double loop bilateral to cut-off, newly-built shaft tower negligible amounts, investment reduction;

3) cut-off formation four loop line road and continue cabling, former four branch of a circuit towers can adopt straight line pole (or low-angle angle pole) to replace according to on-site actual situations, reduce shaft tower service condition, reduce line corridor;

4) triangle cross-arm is conducive to offsetting target and cut-offs circuit and cut-off stressed to cross-arm of rear formation circuit, and overall structure is more stable.

accompanying drawing illustrates:

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is the structural representation of top layer ground wire cross-arm;

Fig. 4 is the structural representation of topping wire cross-arm;

Fig. 5 is the structural representation of lower layer conductor cross-arm;

Fig. 6 is the utility model wiring schematic diagram.

detailed description of the invention:

With reference to Fig. 1-2, the utility model it comprise tower body 1, top layer ground wire cross-arm 2, topping wire cross-arm 3, lower layer conductor cross-arm 4, described tower body 1 top is provided with top layer ground wire cross-arm 2, be provided with topping wire cross-arm 3 below top layer ground wire cross-arm 2, below topping wire cross-arm 3, be provided with lower layer conductor cross-arm 4;

With reference to Fig. 3, described top layer ground wire cross-arm 2 cut-offs side dorsad from tower body 1 and arranges the cross-arm cut-offfing circuit perpendicular to target, arranges triangle cross-arm on one side towards cut-offfing side.

With reference to Fig. 4, described topping wire cross-arm 3 points three layers, every layer all in T font, every layer is cut-off line arrangement both sides cross-arm from tower body 1 parallel object, cut-offs side vertical target dorsad cut-off line arrangement cross-arm from tower body 1.

With reference to Fig. 5, described lower layer conductor cross-arm 4 points three layers, arranges triangle cross-arm from tower body 1 towards cut-offfing side for every layer.

With reference to Fig. 1-5, three limit cross-arms of described triangle cross-arm are that isosceles triangle is arranged, from the drift angle of tower body fixed triangle shape cross-arm, the base parallel object of triangle cross-arm cut-offs line direction.Described triangle cross-arm summit arranges decision perpendicular to the length that base is high by former circuit lead wire and earth wire; The length on described triangle cross-arm base forms four loop line road lead wire and earth wire layout decisions by cut-offfing.

With reference to Fig. 6, newly-built one basic utility model shaft tower below target line, on the cross-arm cut-offfing circuit in topping wire cross-arm perpendicular to target, suspension line great distance leaves the wire of disconnected side, be parallel to cross-arm that target cut-offs circuit hangs and cut-off rear formation circuit, utilize the cross-arm ending being parallel to line direction in topping wire cross-arm to hang jumper string, utilize jumper string and wire jumper to realize circuit and be communicated with.Hang after target is cut-off line conductor and cut-off at the two ends place on lower layer conductor cross-arm intermediate cam shape base and form line conductor, one side cross-arm cut-offfing line grounding wire perpendicular to target of top layer ground wire cross-arm hangs the ground wire that target cut-offs circuit, and the two ends place of the base cross-arm of the triangle cross-arm of top layer ground wire cross-arm hangs cut-offs line grounding wire and cut-off rear formation line grounding wire.

Described topping wire cross-arm is parallel to the cross-arm length that target cut-offs line direction and determines by cut-offfing the rear wire arrangements mode forming circuit, and the cross-arm length of cut-offfing line direction perpendicular to target is determined by the wire arrangements mode of former circuit.

Described top layer ground wire cross-arm, topping wire cross-arm, lower layer conductor cross-arm length and spacing need to be considered between wire and minimum level offset distance between lead wire and earth wire between the electrical distance of electrical distance, wire and tower body, levels adjacent wires.

Claims (1)

1. A steel pipe pole tower with double circuits and double-side breaking steel pipes arranged in a triangular cross arm, is characterized in that it comprises a tower body, a ground wire cross arm on the top floor, an upper floor wire cross arm, and a lower floor wire cross arm, and the top of the tower body is provided with There is a top-layer ground wire cross-arm, an upper-layer wire cross-arm is arranged under the top-layer ground wire cross-arm, and a lower-layer wire cross-arm is arranged under the upper-layer wire cross-arm; The ground wire cross arm on the top floor is arranged from the back of the tower body to the breaking side, and a cross arm perpendicular to the target breaking line is arranged, and a triangular cross arm is arranged facing the breaking side; The upper conductor crossarm is divided into three layers, each layer is arranged with two crossarms parallel to the target breaking line from the tower body, and one side crossarm is arranged perpendicular to the target breaking line from the back of the tower body to the breaking side; The lower conductor cross-arm is divided into three layers, and each layer is arranged with a triangular cross-arm from the tower body to the breaking side; The three sides of the triangular cross arm are arranged in an isosceles triangle, the top angle of the triangular cross arm is fixed from the tower body, and the bottom edge of the triangular cross arm is parallel to the direction of the target breaking line.