CN205046915U - Adopt two sides in two return circuits of V style of calligraphy combination cluster to cut -off steel pipe shaft tower - Google Patents

Abstract

The utility model relates to a double-circuit double-side breaking steel pipe tower adopting a V-shaped combination string. 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 side of the triangular cross arm is arranged on the broken side, and the upper conductor cross arm is divided into three layers, and each layer is arranged from the tower body parallel to the target breaking line on both sides, and from the back of the tower body to the breaking side perpendicular to the target breaking line is arranged on one side of the cross arm. Bearing; the lower conductor cross arm is divided into three layers, and 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 from the tower body facing the breaking side perpendicular to the target breaking line. 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; Possibility of renovation of adjacent tower.

Description

A double-circuit double-sided breaking steel pipe tower using a V-shaped combination string

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 a V-shaped combination string.

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, a new 2-base double-circuit tension tower is built under the original double-circuit line to form 2 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-sided breaking steel pipe tower using a V-shaped combination string. Only one base tower is used to realize double-circuit double-sided breaking, which reduces the number of poles and towers; after breaking, four circuits are formed to continue walking Lines, avoiding the use of four-circuit branch poles; not changing the wire layout of adjacent towers, reducing the possibility of adjacent tower transformation.

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 crossarm on the top floor is arranged from the back of the tower body to the breaking side, and one side is perpendicular to the target breaking line, and a triangular crossarm is arranged facing the breaking side. The three sides of the triangular crossarm are equal Arranged in a waist 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 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, 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 from the tower body facing the breaking side perpendicular to the target breaking line;

In each layer of the upper layer conductor cross arm and the lower layer conductor cross arm, a V-shaped combined insulator string is arranged under the cross arm perpendicular to the direction of the target breaking line. The V-shaped combined insulator string consists of two resistant The tension strings are butted, and at the same time, the V-shaped connecting fittings are connected in the direction of the vertical line at the joints of the two tensile strings, and the V-shaped connecting fittings are then connected to the cross-arm.

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 conducive to offsetting the force of the target breaking line and the formed line on the cross arm after breaking, and the overall structure is more stable;

5) The insulator string on the side of the target breaking line is designed with a V-shaped combined insulator string, which can compress the width of the tower head without changing the suspension characteristics of the line in the direction of the target breaking line.

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 schematic structural view of the upper 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;

Fig. 7 is a schematic structural diagram of a V-shaped combined insulator string;

Fig. 8 is a left view of the V-shaped connecting hardware in Fig. 7 .

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 cross arm 2 is arranged from the back of the tower body 1 to the breaking side with a cross arm perpendicular to the target breaking line, and a triangular cross arm is arranged facing the breaking side, and the triangular cross arm The three-sided cross-arms are arranged in an isosceles triangle, the top angle of the triangular cross-arm is fixed from the tower body 1, and the bottom edge of the triangular cross-arm is parallel to the target breaking line direction. The length of the apex of the triangular cross-arm perpendicular to the height of the base is determined by the ground wire layout of the target breaking line, and the length of the bottom side of the triangular cross-arm is determined by the ground wire layout of the circuit formed after breaking.

Referring to Fig. 4, the upper conductor cross arm 3 is divided into three layers, each layer is arranged with two cross arms parallel to the target breaking line from the tower body 1, and one side cross arm is arranged from the back of the tower body 1 to the breaking side perpendicular to the target breaking line.

Referring to Fig. 5, the lower conductor crossarm 4 is divided into three layers, and each layer is arranged with two crossarms parallel to the target breaking line from the tower body 1, and one side crossarm is arranged from the tower body 1 facing the breaking side perpendicular to the target breaking line.

With reference to Fig. 6-8, build a new pole tower of the basic invention below the target breaking line, and the four-circuit conductors formed after hanging and breaking on the cross arm parallel to the direction of the target breaking line in the upper layer conductor cross arm and the lower layer conductor cross arm are perpendicular to each other on each layer. The V-shaped composite insulator string 5 is suspended under the cross arm in the direction of the target breaking line, and the V-shaped composite insulator string 5 is connected by two tension strings 6 arranged horizontally along the line direction, and at the same time vertically connected at the joint of the two tension strings 6 . Connect the V-shaped connecting fitting 7 in the line direction, and the V-shaped connecting fitting 7 is connected with the cross arm again. The target breaking line conductor is suspended on the V-shaped combined insulator string, and the jumper string is suspended at the cross arm of the upper layer conductor and the lower layer conductor parallel to the cross arm tip of the target breaking line, and the target breaking line conductor and the line conductor are formed after breaking Use jumper strings and jumpers to achieve connectivity. The top-layer ground wire cross-arm is perpendicular to the target breaking line conductor on one side of the cross-arm to hang the target breaking line ground wire, and the bottom cross-arm of the triangular ground wire Suspension breaks the ground wire of the line and forms the ground wire of the line after breaking.

The length of the cross-arm parallel to the direction of the target breaking line in the upper-layer wire cross-arm and the lower-layer wire cross-arm is determined by the arrangement of the wires forming the line after breaking, and a V-shaped composite insulator is suspended below the cross-arm perpendicular to the direction of the target breaking line. The target breaking line conductor is suspended on the V-shaped composite insulator string, and the length of the cross-arm is determined by the structure of the V-shaped composite insulator string and the layout of the target breaking line conductor.

The length and spacing of the top layer ground wire cross arm, the upper layer wire cross arm, and the 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-circuit double-side breaking steel pipes adopting a V-shaped combination string, is characterized in that it comprises a tower body, a top floor ground wire cross arm, an upper floor wire cross arm, and a lower floor wire cross arm, and the top of the tower body A top-layer ground wire cross-arm is provided, an upper-layer wire cross-arm is arranged below 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 crossarm on the top floor is arranged from the back of the tower body to the breaking side, and one side is perpendicular to the target breaking line, and a triangular crossarm is arranged facing the breaking side. The three sides of the triangular crossarm are equal Arranged in a waist 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 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, 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 from the tower body facing the breaking side perpendicular to the target breaking line; In each layer of the upper layer conductor cross arm and the lower layer conductor cross arm, a V-shaped combined insulator string is arranged under the cross arm perpendicular to the direction of the target breaking line. The V-shaped combined insulator string consists of two resistant The tension strings are butted, and at the same time, the V-shaped connecting fittings are connected in the direction of the vertical line at the joints of the two tensile strings, and the V-shaped connecting fittings are then connected to the cross-arm.