CN205476772U - Two return circuit terminals of two bases shaft tower - Google Patents

Abstract

The utility model discloses a two-base double-circuit terminal pole tower, which comprises a 1# pole tower and a 2# pole tower whose center piles at the base tower position are on the same horizontal line. The three-layer wire cross-arm located below the ground wire cross-arm is composed of three wire cross-arms and the wire cross-arm of the 1# tower are composed of three uniformly distributed cross-arms at an angle of 120 degrees on the tower body; The 2# pole tower is composed of a tower body, a ground wire cross arm located at the top of the tower body, a three-layer upper circuit wire cross arm located below the ground wire cross arm, and a three-layer lower circuit wire cross arm located below the upper circuit wire cross arm. The utility model has the advantages of small footprint, low investment and compact layout, can complete system functions in a limited space, is simple to install, reduces operation risks, and is convenient for operation and maintenance.

Description

A two-base double-circuit terminal pole tower

technical field

The utility model relates to a pole tower of a power transmission line, in particular to a two-base double-circuit terminal pole tower.

Background technique

At present, most of the 110KV transmission lines are based on double circuits on the same tower. In actual use, due to the needs of the power system, in line design, for the situation that the double-circuit incoming lines of the same substation cannot be on the same section of the bus, the conventional incoming and outgoing line layout The method is to stagger the central piles of the two base terminal towers back and forth, so that the pole towers can be separated from the other line parallel to the opposite side by a safe distance. Wire. This kind of wiring method has the following disadvantages: firstly, it increases the investment cost, and increases the cost of cables, cable accessories and cable trenches; secondly, the overhead line on one side and the cable on the other side are arranged in the same tower with double circuits, which is not convenient for operation and maintenance.

Utility model content

The purpose of this utility model is to address the shortcomings of the above-mentioned prior art, to provide a two-base double-circuit terminal pole tower with small footprint, low investment, and compact arrangement, which can meet the requirement that the center piles of the two base towers are on the same horizontal line , It can also meet the electrical distance requirements between the tower and another circuit line erected in parallel, and at the same time meet the height requirements for the outgoing line of one busbar to cross the incoming line of the other busbar and the electrical distance requirement for the incoming line of the tower itself.

In order to achieve the above object, the technical solution adopted by the utility model is: a two-base double-circuit terminal tower, including a 1# tower and a 2# tower with the center pile of the base tower on the same horizontal line, and the 1# tower consists of a tower , the ground wire cross arm located at the top of the tower body, and the three-layer wire cross arm located below the ground wire cross arm. The 2# pole tower consists of a tower body, a ground wire cross arm located at the top of the tower body, a three-layer upper circuit wire cross arm located below the ground wire cross arm, and a ground wire cross arm located below the upper circuit wire cross arm. The three-layer lower circuit conductor cross arm is formed.

The utility model has the advantages of small footprint, low investment and compact arrangement, can complete the system function in a limited space, and is easy to install, reduces the operation risk, and is convenient for operation and maintenance.

Description of drawings

Fig. 1 and Fig. 2 are lead and ground wire arrangement drawing of the present utility model respectively;

Fig. 3 is the structural representation of 1# pole tower in the utility model;

Figure 4(a) and Figure 4(b) are the wiring diagrams of the ground wire crossarm and wire crossarm in the 1# tower;

Fig. 5 is the structural representation of 2# pole tower among the utility model;

Figure 6 (a), (b), and (c) are the wiring diagrams of the ground wire crossarm, the upper loop wire crossarm, and the lower loop wire crossarm in the 2# tower, respectively.

In the figure: 1-1# pole tower; 11-tower body; 12-ground cross arm; 13-conductor cross arm; 2-2# pole tower; 21-tower body; 22-ground cross arm; 23-upper circuit wire Cross arm; 24-lower circuit wire cross arm.

detailed description

The utility model will be further described in detail below in conjunction with the embodiments in the accompanying drawings, but it does not constitute any limitation to the utility model.

As shown in Figures 1 and 2, the utility model provides a two-base double-circuit terminal tower, and provides an electrical arrangement of wires and ground wires between the two towers. The two-base double-circuit terminal tower includes 1# Tower 1 and 2# tower 2, and the center piles of the bases of the two towers are on the same horizontal line.

As shown in Figure 3, the 1# pole tower 1 is composed of a tower body 11, a ground wire cross arm 12 positioned at the top of the tower body 11, and a three-layer wire cross arm 13 located below the ground wire cross arm 12. Both the arm 12 and the wire cross arm 13 are composed of three evenly distributed cross arms at an angle of 120 degrees on the tower body 11, and the arrangement of the ground wire cross arm 12 and the wire cross arm 13 is the same, that is, when forming the ground wire Among the three cross-arms of cross-arm 12 and wire cross-arm 13, one of the cross-arms is perpendicular to the direction of the line, and the angle between the other two cross-arms is facing the direction of the substation, as shown in Figure 4 (a) and (b). Middle: K indicates the safety factor of the hanging point of the ground wire and the hanging point of the wire, and the direction of the arrow indicates the direction of entry and exit of the line. The 1# pole tower 1 adopts the above-mentioned structural design and wiring method to ensure the electrical distance requirements of the incoming and outgoing lines of the two circuits, and also meet the electrical distance requirements of the other circuit erected in parallel.

As shown in Figure 5, the 2# pole tower 2 is composed of a tower body 21, a ground wire cross arm 22 positioned at the top of the tower body 21, a three-layer upper circuit wire cross arm 23 located below the ground wire cross arm 22, and an upper circuit wire cross arm 23 located below the ground wire cross arm 22. The three-layer lower loop conductor crossarm 24 below the crossarm 23 is composed of three layers, wherein the upper loop conductor crossarm 23 is perpendicular to the line direction, as shown in Figure 6 (b); the lower loop conductor crossarm 24 and the ground wire The cross arm 22 forms an angle of 45 degrees with the direction of the line, as shown in Figure 6 (a) and (c), in the figure: K represents the safety factor of the hanging point of the ground wire and the hanging point of the wire, and the direction of the arrow represents the line direction of entry and exit. The 2# pole tower 2 adopts the above-mentioned structural design and wiring method to ensure the electrical distance requirements of the incoming and outgoing lines of the three-circuit line, and at the same time meet the height requirement that the outgoing line of one circuit crosses the incoming line of the other circuit.

Claims (3)

1. A two-base double-circuit terminal pole tower, is characterized in that: comprise the 1# pole tower and the 2# pole tower that base tower position central pile is on the same horizontal line, described 1# pole tower is formed by tower body, the ground line that is positioned at tower body top The cross arm and the three-layer wire cross arm located below the ground wire cross arm are composed of three cross arms that are evenly distributed at an angle of 120 degrees on the tower body; The 2# pole tower is composed of a tower body, a ground wire cross arm located at the top of the tower body, a three-layer upper circuit wire cross arm located below the ground wire cross arm, and a three-layer lower circuit wire cross arm located below the upper circuit wire cross arm . 2. The two-base double-circuit terminal tower according to claim 1, characterized in that: among the three cross-arms forming the ground wire cross-arm and conductor cross-arm of the 1# tower, one of the cross-arms is perpendicular to the line direction, the angle between the other two cross-arms is facing the direction of the substation. 3. The two-base double-circuit terminal pole tower according to claim 1, characterized in that: the upper loop conductor crossarm in the 2# pole tower is perpendicular to the line direction, and the lower loop conductor crossarm and ground wire crossarm are in line with the line direction into a 45-degree angle.