CN204920402U - Transmission line single loop chamfer tower - Google Patents

Abstract

The utility model discloses a single-circuit chamfering tower of a power transmission line, which comprises a tower body, an inner angle side ground line cross arm, a phase hanging point in the tower body, and an inner angle side cross arm installed sequentially on the inner angle side of the tower body from top to bottom. , the outer corner side ground wire cross arm and the outer corner side cross arm installed in sequence from top to bottom on the outer corner side of the tower body, the outer corner ground wire cross arm and the outer corner side cross arm are both T-shaped cross arms. The single-circuit chamfering tower of the power transmission line provided by the utility model has the advantages of compact structure, convenient disassembly and assembly, easy manufacture, safety and reliability, and strong practicability. The ground has less impact on the environment; at the same time, it realizes the requirement of large corners, and the range of corners is large, allowing the corners to reach 90 degrees to 150 degrees.

Description

A transmission line single-circuit chamfering tower

technical field

The utility model relates to a chamfering tower, in particular to a single-circuit chamfering tower of a power transmission line, which belongs to the technical field of electrical equipment.

Background technique

With the continuous development of the national economy and the rapid expansion of the city scale, the number of high-voltage transmission lines to be built is also increasing, and the corridors of high-voltage lines are becoming more and more tense. increasingly difficult.

For some situations with complex regions and narrow passages, in order to avoid continuous obstacles, multi-base corner towers are generally used in China to meet the requirements of large-angle avoidance. This method will cause towers to occupy more land, cost more, and have a greater impact on the environment. In some projects, it may even be impossible to erect multi-base strain towers. In order to reduce the engineering quantity, engineering cost and line footprint, it is necessary to design a strain tower scheme that can be chamfered at a large angle.

Utility model content

The main purpose of the utility model is to overcome the deficiencies in the prior art and provide a single-circuit chamfering tower for transmission lines with a new structure, which is especially suitable for the large-angle chamfering requirements of single-circuit lines.

The technical problem to be solved by the utility model is to provide a transmission line single-circuit chamfering tower with compact structure, convenient disassembly and assembly, easy manufacture, safety and reliability, and strong practicability. Line passages and iron towers occupy an area, which has little impact on the environment; at the same time, it can realize the demand for large corners, which is extremely valuable in industry.

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

A single-circuit chamfering tower of a power transmission line, including a tower body, an inner corner side ground wire cross arm, a phase hanging point in the tower body, and an inner corner side cross arm installed sequentially from top to bottom on the inner corner side of the tower body, The outer corner side ground wire cross arm and the outer corner side cross arm are installed sequentially from top to bottom on the outer corner side, and the outer corner ground wire cross arm and the outer corner side cross arm are both T-shaped cross arms.

The utility model is further configured as follows: the T-shaped cross arm includes a connecting rod and a suspension rod that vertically intersect to form a T shape, one end of the connecting rod is connected with the tower body, and the other end is connected with the center of the suspension rod.

The utility model is further configured as follows: the inner corner side ground wire cross arm and the inner corner side cross arm both adopt a short cross arm structure.

The utility model is further set as follows: it also includes three-phase wires, the three-phase wires adopt a triangular arrangement, and from top to bottom are the middle-phase wires hung on the middle phase hanging point of the tower body, and the three-phase wires are respectively hung on the inner corner side horizontal The phase wires on both sides of the arm and the cross arm on the outer corner.

The utility model is further configured as follows: it also includes the outer corner side tension strings, the outer corner side tension strings are installed at both ends of the outer corner side cross arms, and are connected by three jumper strings.

The utility model is further configured as follows: it also includes inner angle side tension strings, the inner angle side tension strings are installed on both sides of the phase hanging point in the tower body and on both sides of the inner angle side cross arms, and are connected to the wires with jumpers .

The utility model is further set as: the suspension rod is a square cross-arm structure.

Compared with the prior art, the utility model has the beneficial effects of:

1. Through the use of T-shaped cross-arms on the outer corner side cross arm and the outer corner side ground wire cross arm, the method of rebuilding or building a multi-base tower is simplified to a new one-base single-circuit transmission line chamfering tower, which greatly saves engineering investment and iron towers Occupy land.

2. By adopting T-shaped cross-arms on the outer corner side cross arm and the outer corner side ground wire cross arm, it can ensure that the electrical clearance between the wire and the tower body meets the requirements in the case of large rotation angles, and at the same time meet the lightning protection angle requirements of the ground wire to the wire.

3. The allowable corner angle can reach 90°~150°, and the corner range is large, which can meet the needs of most single-circuit lines with large angle chamfering.

4. The short cross arm structure is adopted through the inner corner side cross arm and the inner corner side ground wire cross arm, and the middle phase conductor is directly installed on the tower body hanging point through the inner corner side tension string, which reduces the tower material consumption to a minimum, thus greatly saving Engineering investment.

The above content is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly, the utility model will be further described below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the main view structure schematic diagram of a kind of power transmission line single circuit chamfering tower of the utility model;

Fig. 2 is a top view structure schematic diagram of a transmission line single-circuit chamfering tower of the utility model;

Fig. 3 is a side view structural schematic diagram of a transmission line single-circuit chamfering tower of the utility model;

Fig. 4 is a three-dimensional structural schematic diagram of a single-circuit chamfering tower of a power transmission line according to the present invention.

Detailed ways

Below in conjunction with accompanying drawing of description, the utility model is described further.

A transmission line single-circuit chamfering tower as shown in Figures 1 to 4, includes a tower body 1, an inner corner side ground wire cross arm 2 installed sequentially from top to bottom on the inner corner side of the tower body 1, and a phase in the tower body Hanging point 3 and inner corner side cross arm 4, the outer corner side ground wire cross arm 5 and the outer corner side cross arm 6 installed in sequence from top to bottom on the outer corner side of the tower body 1, the outer corner side ground wire cross arm 5 and the outer corner side The crossarms 6 are all T-shaped crossarms; the inner corner side ground wire crossarm 2 and the inner corner side crossarm 4 both adopt a short crossarm structure. The short crossarm structure here means that the length of the crossarm is shorter than that used for the same voltage level. The length of the cross arm is used to save the tower material.

As shown in Figure 2, the T-shaped cross arm includes a T-shaped connecting rod 11 and a suspension rod 12 that intersect vertically, one end of the connecting rod 11 is connected with the tower body 1, and the other end is connected with the center of the suspension rod 12, The suspension rod 12 is a square cross arm. The length of the suspension rod 12 of the outer corner side ground cross arm 5 is greater than the length of the outer corner side cross arm 6 suspension rod 12; the length of the connecting rod 11 of the outer corner side cross arm 6 is greater than that of the outer corner side ground wire cross arm 5 length.

As shown in Figure 3 and Figure 4, it also includes the outer corner side tension string 7, the outer corner side tension string 7 is installed at the two ends of the outer corner side cross arm 6, and is connected by three jumper strings; it also includes the inner corner side Tension strings 8, the inner corner side tension strings 8 are installed on both sides of the phase hanging point 3 in the tower body and on both sides of the inner corner cross arm 4, and are connected to the wires with jumpers; also include three-phase wires, The three-phase conductors adopt a triangular arrangement, and from top to bottom are the middle-phase conductors hung at the middle phase hanging point 3 of the tower body, and the phase conductors on both sides of the inner corner side cross arm 4 and the outer corner side cross arm 6 respectively. .

The innovation of the utility model lies in that it realizes the requirement of a large rotation angle of 90-150 degrees, and can effectively reduce project investment, line passage and iron tower occupation, and has less impact on the environment.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession, without departing from the scope of the technical solutions of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the technical solutions of the present utility model The content of the scheme, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (7)

1. a transmission line of electricity single loop chamfering tower, it is characterized in that: comprise tower body, phase hanging point and interior angle side cross-arm in the interior angle side ground wire cross-arm installed successively from top to bottom in the interior angle side of tower body, tower body, side, the exterior angle ground wire cross-arm installed successively from top to bottom in the side, exterior angle of tower body and side, exterior angle cross-arm, side, described exterior angle ground wire cross-arm and side, exterior angle cross-arm are T-shaped cross-arm.

2. a kind of transmission line of electricity single loop chamfering tower according to claim 1, it is characterized in that: described T-shaped cross-arm comprises intersect vertically T-shaped connecting rod and hanger bar, one end of described connecting rod is connected with tower body, the other end is connected with the center of hanger bar.

3. a kind of transmission line of electricity single loop chamfering tower according to claim 1, is characterized in that: described interior angle side ground wire cross-arm and interior angle side cross-arm all adopt hyphen to carry on a shoulder pole structure.

4. a kind of transmission line of electricity single loop chamfering tower according to claim 1, it is characterized in that: also comprise three-phase conducting wire, described three-phase conducting wire adopts triangle arrangement mode, is followed successively by the middle phase conductor hanging on phase hanging point in tower body, the both sides phase conductor hanging on interior angle side cross-arm and side, exterior angle cross-arm respectively from top to bottom.

5. a kind of transmission line of electricity single loop chamfering tower according to claim 1, is characterized in that: also comprise side, exterior angle strain insulator-string, and side, described exterior angle strain insulator-string is arranged on the two ends of side, exterior angle cross-arm and adopts three jumper strings to connect.

6. a kind of transmission line of electricity single loop chamfering tower according to claim 1, is characterized in that: also comprise interior angle side strain insulator-string, and described interior angle side strain insulator-string is arranged on the both sides of phase hanging point in tower body and the both sides of interior angle side cross-arm and all connects wire with wire jumper.

7. a kind of transmission line of electricity single loop chamfering tower according to claim 2, is characterized in that: described hanger bar is square cross arm structure.