CN206220622U - A kind of single time overhead transmission line cable cut-offs and draws lower angle tower - Google Patents

Abstract

A single-circuit overhead transmission line cable disconnection lead-down corner tower, including a tower body, a top-level ground wire cross-arm, an upper-level conductor cross-arm, a middle-level wire cross-arm, and a lower-level auxiliary cross-arm; the top-level ground wire cross-arm is arranged on the tower The top of the body is V-shaped, and the cross-arms on both sides are arranged perpendicular to the direction of the lines on both sides; Fix the tension string to suspend the medium-phase conductor at the slightly part of the cross arm, and fix the B-shaped cable terminal at the slightly part of the cross arm. Beneficial effects of the utility model: a single-circuit overhead power transmission line cable disconnection lead-down corner tower, the tower is suitable for the corner of the overhead power transmission line, can be used as a corner tower with a rotation angle of 45-90 degrees, and only needs to be used at the same time A basic single-circuit cable breaking tension tower realizes cable breaking, has low construction costs, occupies a small area, does not change the original line arrangement, and is suitable for the construction of adjacent linear towers.

Description

A single-circuit overhead transmission line cable breaking lead down corner tower

technical field

The utility model relates to the technical field of high-voltage power transmission lines, in particular to a single-circuit overhead power transmission line cable breaking lead down corner tower.

Background technique

At present, existing solutions in the prior art usually adopt two solutions, and the specific solutions are as follows:

(1) Two basic single-circuit cable terminal towers are used, and jumpers are used to guide the wires to the connection of the suspension string, the arrester and the cable head, so as to realize the breaking and leading of the line, but the construction cost and the occupied area are relatively large , which is not conducive to implementation.

(2) Adopt a base double-circuit cable terminal tower, use the single-side wire cross arm of the double-circuit terminal tower to hang the wire, and lead the wire to the cable terminal through the jumper wire, so as to realize the breaking and leading of the overhead line cable. However, the construction cost is relatively high, the tower base covers a large area, and the vertical arrangement of the conductor suspension points at the breaking point is different from the conventional triangular or upper font arrangement, which causes the suspension strings of adjacent straight tower conductors to deviate from the vertical state. When the electrical clearance does not meet the requirements, the adjacent tower needs to be rebuilt, which will greatly increase the construction cost and occupied area.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a single-circuit overhead power transmission line cable breaking lead-down corner tower, which is suitable for the corner of the overhead power transmission line and can be used as a corner tower with a rotation angle of 45°-90° , At the same time, only one basic single-circuit cable breaking tension tower is needed to realize cable breaking, the construction cost is low, the floor area is small, and the original line arrangement is not changed, which is suitable for the construction of adjacent straight line towers.

The technical solution adopted by the utility model to solve the problems of the technologies described above is:

The utility model relates to a single-circuit overhead power transmission line cable disconnection down-leading corner tower, which includes a tower body, a ground wire cross arm on the top floor, an upper layer conductor cross arm, a middle layer conductor cross arm, and a lower layer auxiliary cross arm.

The top floor ground wire cross arm is arranged on the top of the tower body, which is V-shaped, and the two side cross arms are arranged perpendicular to the direction of the lines on both sides.

The upper-layer conductor cross-arm is set under the top-layer ground wire cross-arm, which is V-shaped, and the two-side cross-arms are arranged perpendicular to the direction of the lines on both sides. Set the cable suspension bracket to fix the B-shaped cable terminal.

The cross arm of the middle conductor is installed under the cross arm of the upper conductor in a cross-shaped arrangement, and the cross arms on both sides are arranged from the tower body parallel to the line direction, and the tension string is fixed at the slightly part of the cross arm to hang the side-phase conductor, and fixed at the slightly part of the cross arm B-shaped cable terminal; arrange cross-arms on both sides from the vertical line direction of the tower body, fix the tension string suspension side-phase conductor at the slightly part of the cross-arm, and fix the B-shaped cable terminal at the slightly part of the cross-arm.

The auxiliary cross arm of the lower layer is installed under the cross arm of the middle layer conductor, and is arranged in a cross shape. The cross arms on both sides are arranged parallel to the direction of the line from the tower body, and the cable suspension bracket is set at the slightly part of the cross arm to fix the B-shaped cable terminal; vertically from the tower body The cross-arms on both sides are arranged in the direction of the line, and the cable suspension brackets are set at the apex of the cross-arms to fix the B-shaped cable terminals.

The bu-shaped cable terminal is composed of a cable head, a suspension insulator string and a lightning arrester, and is located between the upper conductor crossarm and the middle conductor crossarm, and the middle conductor crossarm and the lower auxiliary crossarm.

Beneficial effects of the utility model: a single-circuit overhead transmission line cable disconnection lead-down corner tower, the tower is suitable for the corner of the overhead transmission line, can be used as a corner tower with a rotation angle of 45 degrees to 90 degrees, and only needs to be used A basic single-circuit cable breaking tension tower realizes cable breaking, has low construction costs, occupies a small area, does not change the original line arrangement, and is suitable for the construction of adjacent linear towers.

Description of drawings

Further description will be given below in conjunction with the accompanying drawings and embodiments.

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

Fig. 2 is a side view of the utility model;

Fig. 3 is the wiring schematic diagram of the present utility model;

FIG. 4 is a top view of FIG. 3 .

detailed description

As shown in Figures 1-3, a single-circuit overhead transmission line cable disconnection lead-down corner tower includes a tower body 1, a ground wire cross arm 2 on the top floor, an upper conductor cross arm 3, a middle conductor cross arm 4, and a lower auxiliary tower. Cross arm 5.

The top floor ground wire cross arm 2 is arranged on the top of the tower body 1 in a V shape, and the two side cross arms are arranged perpendicular to the direction of the lines on both sides.

The upper-layer conductor cross-arm 3 is arranged below the top-layer ground wire cross-arm 2, which is V-shaped. The two-side cross-arms are arranged perpendicular to the direction of the lines on both sides. Bear a little portion to arrange cable suspension bracket 6 to fix the bu-shaped cable terminal 7.

The middle layer wire cross arm 4 is installed under the upper layer wire cross arm 3 in a cross-shaped arrangement. The two side arms are arranged from the tower body 1 parallel to the line direction. Fix the B-shaped cable terminal 7 at the slight part; arrange cross arms on both sides from the vertical line direction of the tower body 1, fix the tension string hanging side-phase conductors at the slightly part of the cross-arm, and fix the B-shaped cable terminal 7 at the slightly part of the cross-arm.

The auxiliary 5 crossarms of the lower layer are installed under the crossarm 4 of the middle layer conductors, arranged in a cross shape, and the crossarms on both sides are arranged from the tower body 1 parallel to the line direction, and the cable suspension bracket 6 is installed on the crossarm to fix the B-shaped cable terminal 7 Arrange crossarms on both sides from the tower body 1 perpendicular to the line direction, and set cable suspension brackets 6 on the crossarms to fix the B-shaped cable terminals 7.

The bu-shaped cable terminal 7 is composed of a cable head, a suspension insulator string and a lightning arrester, and is located between the upper conductor cross-arm 3 and the middle conductor cross-arm 4 , the middle conductor cross-arm 4 and the lower auxiliary cross-arm 5 .

The middle-phase conductor 8 is wound and led to the lower part of the conductor by a jumper wire, and the B-shaped cable terminal 7 between the cross-arm 3 of the upper-layer conductor and the cross-arm 4 of the middle-layer conductor; The dot-shaped cable terminal 7 between the cross-arm 4 and the lower-layer auxiliary cross-arm 5; the other side phase wire is wound to the middle-level wire cross-arm 4 of the parallel line and the lower-layer auxiliary cross-arm 5 by using a jumper wire. Type cable terminal 7.

The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of illustration and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, those skilled in the art can understand that the utility model is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teaching of the utility model, and these variations and modifications all fall within the scope of the utility model. within the scope of protection.

Claims (4)

1. A single-circuit overhead transmission line cable breaking and leading down corner tower is characterized in that it includes a tower body, a top floor ground wire cross arm, an upper floor wire cross arm, a middle layer wire cross arm, and a lower floor auxiliary cross arm; The line cross-arm is set on the top of the tower body, which is V-shaped, and the cross-arms on both sides are arranged perpendicular to the direction of the lines on both sides; Arrange the cross-arms on both sides in the direction, fix the tension string suspension medium-phase conductor at the slightly part of the cross-arm, and set the cable suspension bracket at the slightly part of the cross-arm to fix the B-shaped cable terminal. 2. A single-circuit overhead transmission line cable breaker lead-down corner tower according to claim 1, characterized in that, the middle-level conductor cross-arm is installed under the upper-level conductor cross-arm in a cross-shaped arrangement, from the tower body Arrange cross-arms on both sides parallel to the line direction, fix the tension string suspension side-phase conductors at the slightly part of the cross-arm, and fix the BU-shaped cable terminal at the slightly part of the cross-arm; Fix the tension string to hang the side-phase conductors, and fix the BU-shaped cable terminal at the cross-arm. 3. A single-circuit overhead transmission line cable breaker lead-down corner tower according to claim 1, characterized in that, the lower layer auxiliary cross arm is installed under the middle layer conductor cross arm, arranged in a cross shape, and starts from the tower body Arrange cross-arms on both sides parallel to the line direction, and set cable suspension brackets at the top of the cross-arms to fix the B-shaped cable terminals; arrange cross-arms on both sides perpendicular to the line from the tower body, and set cable suspension brackets at the top of the cross-arms to fix the B-shaped cable terminals . 4. A single-circuit overhead transmission line cable breaker lead-down corner tower according to claim 1, characterized in that, the D-shaped cable terminal is composed of a cable head, a suspension insulator string and a lightning arrester, and is located on the upper layer of the wire. Between the arm and the middle-level conductor cross-arm, the middle-level conductor cross-arm and the lower-level auxiliary cross-arm.