CN206220619U - A kind of single time overhead transmission line cable T joint draws lower anchor support - Google Patents

Abstract

A single-circuit overhead transmission line cable T-lead lower tension tower, including tower body, ground wire cross arm, upper auxiliary cross arm, middle layer conductor cross arm, lower layer auxiliary cross arm, cable suspension bracket, and B-shaped cable down lead Terminal and post insulators; the ground wire cross arm is arranged on the top of the tower body, and the two side cross arms are arranged perpendicular to the line direction; the upper layer auxiliary cross arm is arranged under the ground wire cross arm, and one side arm is arranged perpendicular to the line direction, The lower portion of the auxiliary cross arm on the upper layer is fixed with a bulge-shaped cable down-lead terminal and the post insulator; the lower portion of the upper layer of the auxiliary cross arm is fixed with a tension string to suspend the middle phase conductor. Beneficial effects of the utility model: the single-circuit overhead transmission line cable T-connection under the tension tower proposes a single-circuit tension T-connection scheme, only need to use a basic single-circuit cable T connection tension tower to realize the cable T connection , the construction cost is low, the floor area is small, and the original line arrangement is not changed, it is suitable for the construction of adjacent linear towers, and can be used as a tension tower.

Description

A tension tower under the T-connection of single-circuit overhead transmission line cables

technical field

The utility model relates to the technical field of high-voltage transmission lines, in particular to a tension-resistant tower under the cable T connection of a single-circuit overhead transmission line.

Background technique

At present, existing solutions in the prior art usually adopt a base double-circuit cable terminal tower, which is usually arranged in a drum shape, and a layer of auxiliary cross-arm is added below the lower conductor cross-arm. In the single-circuit overhead line cable T connection project, use the three-layer conductor cross arm on one side of the double-circuit terminal tower to suspend the conductor, use the conductor cross arm and auxiliary cross arm to suspend the cable terminal, and lead the conductor through the jumper To the hanging string of the cable terminal, the lightning arrester and the connection of the cable head, so as to realize the T connection of the overhead line cable.

The double-circuit tension pole tower is used to realize the T connection, the construction cost is high, and the tower base occupies a large area. The vertical arrangement of the wire suspension points at the T connection is different from the conventional triangular or upper-shaped arrangement, resulting in adjacent straight-line towers. The wire suspension string deviates from the vertical state. When the electrical clearance does not meet the requirements, the adjacent tower needs to be rebuilt, which greatly increases the construction cost and floor space.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a single-circuit overhead transmission line cable T-connection lower tension tower. The single-circuit overhead transmission line cable T-connection lower tension tower proposes a single-circuit The down-leading scheme only needs to use a basic single-circuit cable T-connection to the tension tower to realize the cable T-connection. The construction cost is low, the floor space is small, and the original line arrangement is not changed. It is suitable for the construction of adjacent straight-line towers and can be used as a tension tower. tower use.

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

A single-circuit overhead transmission line cable T-lead lower tension tower, including tower body, ground wire cross arm, upper layer auxiliary cross arm, middle layer conductor cross arm, lower layer auxiliary cross arm, cable suspension bracket, and B-shaped cable down lead Terminal and post insulators.

The ground wire cross arms are arranged on the top of the tower body, and the cross arms on both sides are arranged perpendicular to the line direction.

The upper layer auxiliary cross arm is arranged below the ground wire cross arm, and one side arm is arranged perpendicular to the line direction, and the upper auxiliary cross arm is fixed with a D-shaped cable down-lead terminal and a post insulator. The middle-phase conductor is suspended by fixed tension strings at the lower part where the upper cross arm connects with the tower body.

The middle-level conductor cross-arm is arranged below the upper-level auxiliary cross-arm, and the cross-arms on both sides are arranged perpendicular to the direction of the line. Cable suspension brackets for down-conductor terminals.

The auxiliary cross arm of the lower layer is arranged under the cross arm of the middle layer conductor, and the cross arms on both sides are arranged perpendicular to the direction of the line. It is set on the cross arms on both sides of the auxiliary cross arms of the lower layer.

The bu-shaped cable down-conductor terminal is composed of a cable head, a string of hanging insulators and a lightning arrester.

Beneficial effects of the utility model: the single-circuit overhead transmission line cable T-connection under the tension tower, a single-circuit tension T-connection scheme is proposed, only need to use a basic single-circuit cable T connection tension tower to realize the cable T connection , the construction cost is low, the floor area is small, and the original line arrangement is not changed, it is suitable for the construction of adjacent linear towers, and can be used as a tension tower.

Description of drawings

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

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

Fig. 2 is the wiring schematic diagram of the present utility model;

FIG. 3 is a top view of FIG. 2 .

detailed description

As shown in Figures 1-3, a single-circuit overhead transmission line cable T-connected lower tension tower includes a tower body 1, a ground wire cross arm 2, an upper auxiliary cross arm 3, a middle wire cross arm 4, and a lower auxiliary cross arm. Cross arm 5, cable suspension bracket 6, BU-shaped cable down-lead terminal 7, post insulator 8.

The ground wire cross arm 2 is arranged on the top of the tower body 1 in the vertical line direction, which is used to suspend the ground wire; the upper floor auxiliary cross arm 3 is arranged in the vertical line direction below the ground wire cross arm 2, and its apex is used to fix the B-shaped cable down-lead terminal 7 and post insulator 8; the upper layer auxiliary cross arm 3 is vertical to the line direction and the middle layer conductor cross arm 4 is arranged on both sides of the tower body 1, the middle layer conductor cross arm 4 is slightly fixed to the tension string and the side phase conductor is suspended, and the middle layer conductor cross arm 4 is slightly A cable suspension bracket 6 is arranged at the bottom to fix the down-lead terminal 7 of the B-shaped cable; the lower auxiliary cross arm 5 is arranged on both sides of the tower body 1 in the direction of the vertical line under the middle conductor cross arm 4, and the lower auxiliary cross arm 5 is provided with a cable suspension The bracket 6 is used to fix the down-conducting terminal 7 of the B-shaped cable.

The lower part of the connection between the auxiliary cross arm 3 on the upper layer and the tower body 1 is fixed in a tension string to suspend the middle phase wire 9, and the middle phase wire 9 is connected to the down-lead terminal 7 of the B-shaped cable through a jumper wire through the post insulator 8; the middle wire cross arm 4 The tip is fixed in tension strings to suspend the side-phase conductors, and the side-phase conductors are connected to the down-lead terminal 7 of the BU-shaped cable by means of a jumper wire.

The BU-shaped cable down-conductor terminal 7 is composed of a cable head, a suspension insulator string and a lightning arrester.

Cross-arm spacing, length and other parameters are designed and determined comprehensively considering conditions such as electrical clearance, cable bending, terminal arrangement, and facility parameters.

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 T-connected lower tension tower is characterized in that it includes a tower body, a ground wire cross arm, an upper strata auxiliary cross arm, a middle layer conductor cross arm, a lower floor auxiliary cross arm, a cable suspension bracket, B-shaped cable down-lead terminal and post insulator, the ground wire cross arm is arranged on the top of the tower body, and the two side cross arms are arranged perpendicular to the line direction; the upper layer auxiliary cross arm is set under the ground wire cross arm, and is arranged perpendicular to the line direction One side of the cross-arm, and the upper part of the auxiliary cross-arm is fixed with a square-shaped cable down-lead terminal and post insulator. 2. A kind of single-circuit overhead transmission line cable T-connected lower tension tower according to claim 1, characterized in that, a middle-level conductor cross-arm is arranged on both sides of the tower body in the vertical line direction below the upper-level auxiliary cross-arm , the middle cross-arm is slightly fixed with tension strings to hang the side-phase conductors, and the middle cross-arm is provided with a cable suspension bracket for fixing the down-lead terminal of the BU-shaped cable. 3. A kind of single-circuit overhead transmission line cable T-connected lower tension tower according to claim 1, characterized in that, the lower layer of auxiliary cross-arms is arranged on both sides of the tower body in the vertical line direction under the middle-level conductor cross-arm , the lower part of the auxiliary cross-arm is provided with a cable suspension bracket for fixing the down-lead terminal of the B-shaped cable, and the cable suspension bracket is arranged on the two side arms of the lower auxiliary cross-arm. 4. A single-circuit overhead transmission line cable T-connected down-tension tower according to claim 1, characterized in that, the D-shaped cable down-lead terminal is composed of a cable head, a string of hanging insulators and a lightning arrester.