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 double-circuit double-side breaking steel pipe pole tower with triangular cross-arm arrangement

Technical field:

The utility model relates to the technical field of high-voltage transmission lines, in particular to a steel pipe pole tower with double-circuit double-side breaking and adopting triangular cross-arm arrangement.

Background technique:

In existing high-voltage transmission line projects, double-circuit transmission lines are often disconnected and connected to new substations at the same time. Usually, two bases and double-circuit tension towers are built under the original double-circuit line to form two double-circuit lines and continue to run. , as the high-voltage corridor in the urban area is gradually tense, it is required to form a four-circuit line route through the four-circuit branch pole after the line is disconnected. This breaking method has problems such as a large number of new towers, a large footprint, and a wide line corridor. It is difficult to implement.

Invention content:

The purpose of this utility model is to provide a double-circuit double-side breaking steel pipe pole tower with a triangular cross-arm arrangement. Only one base pole tower is used to realize double-circuit double-side breaking, which reduces the number of pole towers; after breaking, four circuits are formed to continue routing , avoid the use of four-circuit branch poles, do not change the wire arrangement of adjacent towers, and reduce the possibility of transformation of adjacent towers.

In order to solve the problems existing in the background technology, the utility model adopts the following technical scheme: it includes a tower body, a top ground wire cross arm, an upper layer wire cross arm, and a lower layer wire cross arm, and the top of the tower body is provided with a top ground wire cross arm , there is an upper-layer wire cross-arm 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.

Compared with the prior art solutions, the utility model has the following advantages:

1) The wire layout of the target breaking line is not changed, which reduces the possibility that the adjacent towers of the target breaking line are difficult to meet the electrical clearance requirements;

2) Only one basic patent tower can be used to complete double-circuit double-sided breaking, and the number of new towers is small, saving investment;

3) The four-circuit line is disconnected and continues to run. The original four-circuit branch tower can be replaced by a straight pole (or a small-angle corner pole) according to the actual situation on site, which reduces the use conditions of the pole tower and reduces the line corridor;

4) The triangular cross-arm is beneficial to offset the force on the cross-arm of the target breaking line and the formed line after breaking, and the overall structure is more stable.

Description of drawings:

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

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

Fig. 3 is a structural schematic diagram of the cross arm of the ground wire on the top floor;

Fig. 4 is a structural schematic diagram of the upper-layer conductor cross-arm;

Fig. 5 is a structural schematic diagram of the lower conductor cross-arm;

Fig. 6 is a schematic diagram of wiring of the utility model.

detailed description:

Referring to Fig. 1-2, the utility model comprises a tower body 1, a top ground wire cross arm 2, an upper layer wire cross arm 3, and a lower layer wire cross arm 4, the top of the tower body 1 is provided with a top ground wire cross arm 2, and An upper-layer wire cross-arm 3 is arranged below the ground wire cross-arm 2 , and a lower-layer wire cross-arm 4 is arranged below the upper-layer wire cross-arm 3 ;

Referring to FIG. 3 , the top-floor ground wire crossarm 2 is arranged from the back of the tower body 1 to the breaking side with a crossarm perpendicular to the target breaking line, and a triangular crossarm is arranged facing the breaking side.

Referring to Figure 4, the upper conductor cross arm 3 is divided into three layers, each layer is T-shaped, and each layer is arranged with cross arms on both sides from the tower body 1 parallel to the target breaking line, and from the tower body 1 back to the breaking side vertical target The breaking line is arranged on one side of the cross arm.

Referring to Fig. 5, the lower conductor cross-arm 4 is divided into three layers, and each layer is arranged with a triangular cross-arm from the tower body 1 to the breaking side.

Referring to Figures 1-5, 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. The length of the apex of the triangular cross-arm perpendicular to the height of the base is determined by the arrangement of the ground wires of the original line; the length of the bottom of the triangular cross-arm is determined by the arrangement of the ground wires of the disconnected and formed four-circuit line.

With reference to Fig. 6, build a new basic utility model pole tower below the target line, hang the wire on the cross arm perpendicular to the target breaking line on the cross arm of the upper layer conductor far away from the broken side, and parallel to the cross arm of the target breaking line The line is formed after the suspension is broken, and the jumper string is suspended from the cross-arm point parallel to the line direction in the upper-layer conductor cross-arm, and the line connection is realized by using the jumper string and the jumper wire. Suspend the target breaking line conductor at the two ends of the bottom edge of the triangle in the lower layer conductor cross arm and form the line conductor after breaking, and hang the target breaking line on the side of the top floor ground wire cross arm Ground wire, the two ends of the bottom side cross arm of the triangular cross arm of the ground wire cross arm of the top layer are suspended to break the line ground wire and form the line ground wire after breaking.

The length of the cross arm of the upper layer wire parallel to the direction of the target breaking line is determined by the arrangement of the wires forming the line after breaking, and the length of the cross arm perpendicular to the direction of the target breaking line is determined by the arrangement of the wires of the original line.

The length and spacing of the top-layer ground wire cross-arm, upper-layer wire cross-arm, and lower-layer wire cross-arm need to consider the electrical distance between the wires and the ground wires, the electrical distance between the wires and the tower body, and the minimum horizontal deviation between the upper and lower adjacent wires. Move distance.

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.