A new type of tower with down-through and up-cross double call high single loop

Abstract

The utility model provides a kind of novel tower of lower crossing upper crossing double call height single loop, including tower body and tower head, the tower head includes ground wire support and wire cross arm, the iron tower has different call height in the front and rear sides along line direction, forms double call height structure;The tower head is asymmetric structure, to adapt to the different wire hanging point height of front and rear sides;The iron tower is jumper pair and draws type and realizes the electrical connection of front and rear side wire;The utility model can realize lower crossing and upper crossing function simultaneously on one base tower, solve the line laying problem of path limited area.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage transmission line engineering technology, and in particular to a novel single-circuit tower with underpass and overpass double-call tower. Background Technology

[0002] The poles and towers of overhead transmission lines are supporting structures used to support the power lines. They are mostly made of steel and are one of the important pieces of equipment for overhead transmission lines. Currently, the iron towers used in engineering are all of the conventional type, with a turning angle of 0° to 90° and a consistent height on both sides. On the same tower, the height and position of the conductor and ground wire suspension points on both sides are consistent.

[0003] Currently, due to economic development, high-voltage transmission lines are encountering more and more crossings, and people are paying more and more attention to environmental protection and water conservation, making tree felling more and more difficult. In line design, after passing under the line, it is often necessary to cross other obstacles immediately. It is difficult to meet the requirements using conventional types of towers. Sometimes, two towers can only be erected in a very close position, which makes the project difficult and uneconomical. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to provide a new type of underpass and overpass double-call single-circuit tower that can realize both underpass and overpass functions on a single tower, solving the problem of line laying in areas with limited routes.

[0005] This utility model is implemented using the following method: a novel single-circuit tower with double call heights and overhead crossover, comprising a tower body and a tower head, wherein the tower head includes a ground wire support and a conductor crossarm, and the front and rear sides of the tower along the line direction have different call heights, forming a double call height structure; the tower head is an asymmetrical structure to accommodate different conductor suspension point heights on the front and rear sides; the tower uses a jumper-type tie rod to realize the electrical connection of the conductors on the front and rear sides.

[0006] Furthermore, the difference in height between the front and rear sides is 6 meters or 9 meters.

[0007] Furthermore, the tower head is positioned higher on the side with the higher nominal height for the ground wire support and conductor crossarm than on the side with the lower nominal height.

[0008] The beneficial effects of this utility model are as follows: Under the premise of meeting the specifications, at the crossing position, this technology can solve the problem that the existing technology requires two towers with only one tower, which is easier to implement and more cost-effective; one tower can replace the underpass and overpass functions that the existing technology requires two towers to complete, which significantly reduces the number of tower bases, land area and overall project cost; strong adaptability: it is particularly suitable for areas with restricted paths and complex crossings, such as narrow corridor areas that need to simultaneously pass under the line and cross other obstacles, which improves the flexibility and feasibility of line planning; reasonable structure: through the asymmetrical tower head design and jumper tie method, the problem of conductor connection caused by different nominal heights is cleverly solved while ensuring electrical safety clearance and mechanical strength, and the structure is stable and reliable. Attached Figure Description

[0009] Figure 1 This is a front view (along the line direction) of the novel tower described in this utility model.

[0010] Figure 2 This is a side view of the novel tower described in this utility model.

[0011] Figure 3 This is a top view of the novel tower described in this utility model. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] like Figures 1 to 3 As shown, this utility model provides a novel single-circuit tower with a double-call overhead structure, the tower body 1 being a foundation support structure. The tower head includes a ground wire bracket 2, an upper conductor crossarm 3, and a lower conductor crossarm 4. (From the front view...) Figure 1 It can be clearly seen that the height H1 on the right side of the tower (assuming it is the direction of the line) is greater than the height H2 on the left side. The difference ΔH between the two can be designed as a standard value such as 6 meters or 9 meters according to the needs of the project.

[0014] Side view ( Figure 2 The diagram illustrates the asymmetrical arrangement of the tower heads. On the higher side (right), ground wire support 2 and conductor crossarms 3 and 4 are positioned higher to meet the clearance requirements for crossing obstacles. On the lower side (left), ground wire support and conductor crossarms are positioned lower to meet the low-hanging point requirements when passing under existing lines. (Top view) Figure 3 This shows the horizontal arrangement of the conductor crossarm.

[0015] The jumper connection adopts a pull-out type (the jumper is not shown in detail in the figure), which means that through flexible jumper arrangement and appropriate insulator strings, the conductors at different heights on the front and rear sides are safely and reliably connected in the air to ensure the current path.

[0016] During construction, the lower-profile tower is positioned so that its upper side faces the direction it needs to pass under (such as an existing power transmission line), while the higher-profile tower faces the direction it needs to cross over (such as a highway or railway). In this way, a single tower can simultaneously solve the problem of crossing in two directions.

[0017] Part 1: On the same tower, the front and rear sides are designed with inconsistent heights, differing by 6 meters or 9 meters. Part 2: The tower heads are rationally arranged, and jumpers are used in a pull-back configuration to solve the connection problem between the front and rear conductors; on the same tower, where the front and rear sides have inconsistent heights, jumpers are used in a pull-back configuration.

[0018] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A novel single-circuit tower with underpass and overpass double call points, comprising a tower body and a tower head, wherein the tower head includes a ground wire support and a conductor crossarm, characterized in that: The tower has different nominal heights on the front and rear sides along the line direction, forming a double nominal height structure; the tower head has an asymmetrical structure to accommodate the different conductor suspension point heights on the front and rear sides. The tower uses a jumper cable tie-type connection to achieve electrical connection between the front and rear conductors.

2. A novel single-circuit tower with underpass and overpass double call towers according to claim 1, characterized in that: The difference in height between the front and rear sides is 6 meters or 9 meters.

3. A novel single-loop tower with overhead double-call function as described in claim 1 or 2, characterized in that: The tower head is positioned higher than the ground wire support and conductor crossarm on the side with the higher nominal height.

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