CN105178678A - Two-circuit line breaking and four-circuit cable leading-down tower - Google Patents

Abstract

The double-circuit breaking four-circuit cable leads down the tower. It includes a tower body and a ground wire support. The ground wire support is arranged on the top of the tower body, the upper wire cross arm is arranged under the ground wire support, the middle wire cross arm is arranged under the upper wire cross arm, and the lower Conductor cross-arm, under the lower conductor cross-arm, there is a cable guide auxiliary cross-arm, the ground wire support is perpendicular to the direction of the target line, the upper conductor cross-arm, middle conductor cross-arm, lower conductor cross-arm, cable guide auxiliary The cross arms are all in the shape of a cross, and each cross arm of the upper conductor cross arm, the middle conductor cross arm, the lower conductor cross arm, and the cable lead auxiliary cross arm forms an angle of 45° with the respective connected wires. The invention samples one base pole tower to realize the disconnection of the double-circuit line and the cable lead-down, avoids the use of two base pole towers, reduces line investment, and minimizes the impact on the target line.

Description

Double-circuit breaking four-circuit cable down-leading tower

Technical field:

The invention relates to the technical field of high-voltage transmission lines, in particular to a double-circuit breaking four-circuit cable down-leading tower.

Background technique:

In the existing transmission line project, the double-circuit double-side breaking cable down-conduction scheme usually adopts two-base double-circuit cable terminal rods (see Figure 1), and the suspension is realized by adding a layer of auxiliary cross-arms under the double-circuit tension rod lower cross-arms. Effective fixation of strings and arresters, and use jumpers to guide the wires to the connection of the hanging strings, arresters and cable heads, so as to realize the disconnection and down-leading of the lines.

The main disadvantages of the existing breaking schemes are:

It is necessary to build two base towers to complete the disconnection. The number of towers is large, the construction cost is high, and the tower base occupies a large area.

Invention content:

The purpose of the present invention is to provide a double-circuit breaking and four-circuit cable lead-off tower, which can realize the breaking of double-circuit lines and cable lead-off by sampling one base tower, avoiding the use of two base towers, reducing line investment, and minimizing Little impact on the target line.

In order to solve the problems existing in the background technology, the present invention adopts the following technical solutions: it includes a tower body and a ground wire support. A cross-arm for the middle conductor is arranged under the pole, a cross-arm for the lower conductor is arranged under the cross-arm for the middle conductor, and an auxiliary cross-arm for cable leads is arranged under the cross-arm for the lower conductor. cross-arm, middle conductor cross-arm, down-conductor cross-arm, and cable-lead auxiliary cross-arm are all cross-shaped, and each cross-arm of upper conductor, middle conductor, lower conductor and cable-lead auxiliary cross-arm is It forms an angle of 45° with the wires connected to each other.

Compared with conventional breaking solutions, the present invention has the following advantages:

(1) Compared with the conventional double-circuit breaking and down-leading scheme, the double-circuit breaking and four-circuit down-leading tower of the present invention reduces the number of new towers, reduces the land occupation of tower foundations and civil coordination resistance, and reduces project investment.

(2) Compared with the conventional double-circuit breaking and down-leading scheme, the construction time of the double-circuit breaking four-circuit cable down-leading tower of the present invention is significantly shortened in foundation pouring, tower resistance and line setting-out, which can reduce the power outage time of the breaking target line , to minimize the impact on the target line.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a wiring diagram of the present invention.

Detailed ways:

Referring to Figure 1-2, it includes a tower body 1 and a ground wire support 2, the top of the tower body 1 is provided with a ground wire support 2, an upper wire cross arm 3 is arranged below the ground wire support 2, and an upper wire cross arm 3 is arranged below There is a middle conductor cross arm 4, a lower conductor cross arm 5 is arranged under the middle conductor cross arm 4, a cable guide auxiliary cross arm 6 is arranged under the lower conductor cross arm 5, the ground wire support 2 is perpendicular to the direction of the target line, and the The upper conductor crossarm 3, the middle conductor crossarm 4, the lower conductor crossarm 5, and the cable guide auxiliary crossarm 6 are all cross-shaped, and the upper conductor crossarm 3, the middle conductor crossarm 4, the lower conductor crossarm 5, and the cable Each cross-arm of the auxiliary lower-lead cross-arm 6 is at an angle of 45° with the wires respectively connected.

Between the corresponding cross-arms of the upper conductor cross-arm and the middle conductor cross-arm, between the corresponding cross-arms of the middle conductor cross-arm and the lower conductor cross-arm, between the corresponding cross-arms of the lower conductor cross-arm and the cable auxiliary auxiliary cross-arm Cable brackets, post insulators and cable heads are installed between the poles, and the present invention is arranged in the middle of the target line. The present invention breaks the target line on both sides, connects the corresponding wires to the insulator strings of the corresponding cross arms, and The jumper is connected to the cable head on the lower cable bracket, so as to meet the condition of electrical clearance, and use a base tower to realize the breaking of the double-circuit line and the leading down of the cable.

Claims (1)

1. tower under four times cable leadings is cut-off in double loop, it is characterized in that, it comprises tower body, earth wire support, described tower body top is provided with earth wire support, upper conductor cross-arm is provided with below earth wire support, middle wire cross-arm is provided with below upper conductor cross-arm, below middle wire cross-arm, lower wire cross-arm is set, auxiliary cross-arm under being provided with cable leading below lower wire cross-arm, described earth wire support is perpendicular to target line direction, described upper conductor cross-arm, middle wire cross-arm, lower wire cross-arm, under cable leading, auxiliary cross-arm is all in cross, and upper conductor cross-arm, middle wire cross-arm, lower wire cross-arm, under cable leading, each cross-arm of auxiliary cross-arm is all 45 ° of angles with the respective wire be connected.