CN206220620U - A kind of four return cables cut-off anchor support - Google Patents

Abstract

Anchor support is cut-off the utility model discloses a kind of four return cable, including tower body, be provided with tower body top layer ground wire cross-arm, on double back wire cross-arm, lower double back wire cross-arm and bottom auxiliary cross-arm, the top layer ground wire cross-arm, upper double back wire cross-arm arrange both sides cross-arm from tower body side perpendicular to line direction, and above-below direction is consistent；The lower double back wire cross-arm, bottom auxiliary cross-arm arrange that above-below direction is consistent in T fonts, and adjacent both sides cross-arm angle is in 90 degree.Cable suspension support is respectively connected with each ending of lower double back wire cross-arm, fore-telling font cable is respectively connected with each cable suspension support and is drawn lower terminal.The tower is applied to overhead transmission line corner, can be used for four loop unilateral or bilaterals and cut-off as the angle tower of 90 degree of the corner number of degrees 45 degree, preferably adjacent to tangent tower construction, compared with scheme compared to a base shaft tower is saved, construction cost is reduced, reduce floor space.

Description

A four-circuit cable breaking strain tower

technical field

The utility model relates to the technical field of high-voltage transmission lines, in particular to a four-circuit cable breaking tension tower.

Background technique

In the existing four-circuit overhead transmission line cable breaking project, two-base four-circuit cable terminal towers are usually used to suspend the overhead transmission lines on both sides of the breaking point. The conventional four-circuit cable terminal tower is formed by adding cable auxiliary crossarms to achieve effective fixing of cable terminals. The disadvantage of this scheme is that it is necessary to build a new two-base four-circuit pole tower to complete the breaking, the number of pole towers is large, the construction cost is high, and the floor area is large.

Utility model content

The purpose of the utility model is to provide a four-circuit cable breaking tension tower for the deficiencies of the prior art.

In order to achieve the above object, the technical solution adopted by the utility model is:

A four-circuit cable breaking tension-resistant tower, including a tower body, on the tower body is provided with a top ground wire cross arm, an upper double-circuit wire cross arm, a lower double-circuit wire cross arm and a bottom auxiliary cross arm, the top ground wire The crossarms and the upper double-circuit conductor crossarms are arranged from the side of the tower body perpendicular to the line direction on both sides, with the same up and down directions; the lower double-circuit conductor crossarms and the bottom auxiliary crossarms are arranged in a T shape, with the same up and down directions.

Each point of the cross arm of the lower double-circuit wire is connected with a cable suspension bracket, and each cable suspension bracket is connected with a BU-shaped cable down-lead terminal.

The BU-shaped cable down-conductor terminal is composed of a cable head, a suspension insulator string and a lightning arrester, the suspension insulator string and the lightning arrester are vertically arranged, and the lightning arrester is located above the suspension insulator string.

The upper double-circuit conductor cross-arm has a three-layer structure, and each layer of cross-arms is arranged from the side of the tower body perpendicular to the direction of the line on both sides, with the same up and down directions.

The cross-arm of the lower double-circuit conductor has a three-layer structure, and each layer of cross-arm is arranged in a T-shape with the same up and down directions.

The upper double-circuit conductor cross-arm uses two-side cross-arm conductors for each layer, and the lower double-circuit conductor cross-arm uses two-side cross-arms for each layer to suspend the outer conductor at the corner of the transmission line, and each layer uses one crossarm to suspend the inner conductor at the corner of the transmission line.

Beneficial effects of the utility model: the tower is suitable for the corner of the overhead transmission line, and can be used as a corner tower with a rotation angle of 45 degrees to 90 degrees. It can be used for one-sided or double-sided breaking of four circuits. Compared with the existing scheme, one base pole tower is saved, the construction cost is reduced, and the occupied area is reduced.

Description of drawings

Fig. 1 is the perspective view of the utility model;

Fig. 2 is the front view of the utility model;

Fig. 3 is the left view of the utility model;

Fig. 4 is the top view of the utility model upper double circuit tower;

Fig. 5 is a top view of the lower double circuit tower of the utility model.

detailed description

Below in conjunction with embodiment the utility model is described further.

Example

A four-circuit cable breaking tension tower as shown in Figures 1-5 includes a tower body 1, a ground wire cross arm 2 on the top floor, an upper double-circuit wire cross arm 3, a lower double-circuit wire cross arm 4, and bottom auxiliary Cross arm 5, cable suspension bracket 6 and B-shaped cable down-lead terminal 7. The top-floor ground wire cross-arm and the upper double-circuit wire cross-arm are arranged on both sides perpendicular to the line direction from the side of the tower body, and the up and down directions are consistent. The lower double-circuit conductor cross-arm and the bottom auxiliary cross-arm are arranged in a T-shape, with the same up and down directions, and the angle between the cross-arms on two adjacent sides is 90 degrees.

The BU-shaped cable down-conductor terminal is composed of a cable head, a suspension insulator string and a lightning arrester. The suspension insulator string and the lightning arrester are arranged vertically. The lightning arrester is located above the suspension insulator string. The cable head and the lightning arrester form a certain angle.

(1) When the above-mentioned four-circuit overhead transmission line cable disconnection guides the lower corner tower to implement the double-sided disconnection scheme.

The upper double-circuit wire cross arm, the outer cross arm of the corner uses one cross arm to suspend the outer ground wire at the corner of the transmission line, and the inner cross arm of the corner uses one cross arm to suspend the outer ground wire at the corner of the transmission line, the cross arm and the ground wire The line is at an angle.

The lower double-circuit wire cross-arm, the bottom auxiliary cross-arm and the cable suspension bracket are between the wire cross-arms of the outer wire at the corner of the suspension transmission line, and between the outer wire cross-arm of the suspension transmission line corner and the lower bottom auxiliary cross-arm Fix the cable terminal, the fixed position is located at the tip of the conductor cross-arm and the bottom auxiliary cross-arm, and a cable terminal can be fixed between the cross-arms.

The lower double-circuit conductor cross-arm, the middle-level conductor cross-arm, the lower-layer conductor cross-arm and the bottom-layer auxiliary cross-arm are located between the conductor cross-arms of the inner conductor at the corner of the suspended transmission line, and at and below the inner conductor cross-arm of the corner of the suspended transmission line. The cable terminal is fixed between the bottom auxiliary cross arms, and the fixed position is located on the cable suspension bracket extending along the wire cross arm and the bottom auxiliary cross arm, and two cable terminals can be fixed between the cross arms.

The conductors suspended at the tip of the conductor cross-arm are wound and led to the B-shaped cable terminal located under the cross-arm by jumpers, so as to realize double-sided cable disconnection of the four-circuit overhead transmission line.

(2) When the above-mentioned double-circuit overhead transmission line cable breaks the single-side break scheme of the double circuit of the down-leading corner tower.

The lower double-circuit conductor cross-arm and the bottom auxiliary cross-arm, the fixed cable terminals between the wire cross-arms of the inner conductor at the corner of the suspended transmission line, and between the inner conductor cross-arm at the corner of the suspension transmission line and the lower bottom auxiliary cross-arm are cancelled. , simultaneously cancel the bottom auxiliary cross arm 6 and be positioned at the cross arm below the inner conductor cross arm at the corner of the suspension transmission line.

The outer conductors suspended at the tip of the conductor cross-arm are wound and led to the terminal of the B-shaped cable under the cross-arm by jumpers; the inner conductors suspended at the tip of the conductor cross-arm are directly connected to realize single-sided double-circuit overhead transmission lines cable is disconnected.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the description is only to illustrate the principle of the utility model. Simple modifications and replacements by ordinary technicians are within the protection scope of the present utility model.

Claims (4)

1. A four-circuit cable breaking tension-resistant tower, including a tower body, is characterized in that: the tower body is provided with a top floor ground wire crossarm, an upper double-circuit wire crossarm, a lower double-circuit wire crossarm and a bottom auxiliary crossarm , the top floor ground wire crossarm and the upper double-circuit conductor crossarm are arranged from the side of the tower body perpendicular to the line direction, and the upper and lower directions are consistent; the lower double-circuit conductor crossarm and the bottom auxiliary crossarm are arranged in a T shape , in the same direction up and down. 2. A kind of four-circuit cable breaking strain tower according to claim 1, characterized in that: a cable suspension bracket is connected to the inner side of the lower double-circuit conductor cross-arm, and each cable suspension bracket Both are connected with BU-shaped cable down-lead terminals; at the outer conductor cross-arm part of the lower double-circuit conductor cross-arm, there are BU-shaped cable down-lead terminals connected. 3. A four-circuit cable breaking strain tower according to claim 2, characterized in that: the down-conductor terminal of the B-shaped cable is composed of a cable head, a string of hanging insulators and a lightning arrester, and the string of hanging insulators and the lightning arrester are vertical Arranged, the arrester is located above the suspension insulator string. 4. A four-circuit cable breaking tension tower according to claim 1, characterized in that: the upper double-circuit wire crossarm uses two-side cross-arm wires for each layer, and the lower double-circuit wire cross-arm uses two-side cross-arm wires for each layer Suspend the outer wire at the corner of the transmission line, and use one side of the cross arm to hang the inner wire at the corner of the transmission line on each layer.