Four-loop branch tower for overhead transmission line
By designing the four-loop branch tower of the overhead transmission line, a specific arrangement cross-burst structure made of alloy steel is used to realize the upper and lower open loops of the upper and lower layers of the double loops on the one-base tower, solving the problem of increased land occupation and cost of the double loop circuit, reducing line crossing and safety hazards.
Patent Information
- Application Number
- CN202421650204.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-07-12
AI Technical Summary
In the prior art, the double-return circuit breaker requires two base pole towers, resulting in an increase in the width of the power corridor and an increase in investment costs, and there are line crossing and safety hazards.
A four-loop branch tower of overhead transmission line is designed, and the upper and lower layers of the double-loop circuit are realized on a base pole tower. Through the specific arrangement of ground wire cross-body and wire cross-body, including the upper double-loop conductor wire cross-body and the lower double-loop conductor wire cross-body. The material is alloy steel, so that the vertical and symmetrical arrangement of the double loop is realized.
It reduces the number and footprint of the towers, reduces investment costs, avoids line crossing, and reduces safety hazards. It is especially suitable for resource-strapped areas.
Smart Images
Figure CN223227159U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a four-circuit branch tower for an overhead power transmission line, belonging to the technical field of power transmission and distribution. Background Art
[0002] With the continuous development of society and the continuous increase in electricity consumption, the power grid is becoming increasingly dense. However, with the continuous decline in land resources, in order to reduce the length of line corridors, in areas with limited access, the current and future construction of new lines will mainly focus on double-circuit or multi-circuit lines. As the power grid develops, existing lines will increasingly be disconnected and connected to new substations. Conventional double-circuit lines require two towers for disconnection, which widens the corridor, increases the land area, and increases investment costs. Summary of the Invention
[0003] In order to solve the shortcomings of the existing technology, the purpose of the present invention is to provide an overhead transmission line four-circuit branch tower. The overhead transmission line four-circuit branch tower of the utility model realizes the double open loops of the upper and lower layers of the double-circuit line on a single tower, thereby avoiding the crossing of the lines and reducing safety hazards.
[0004] In order to achieve the above objectives, the present invention adopts the following technical solutions:
[0005] A four-circuit branch tower for an overhead power transmission line comprises a tower body, a ground wire crossarm and a conductor crossarm, wherein the ground wire crossarm is located at the uppermost layer of the tower body, the conductor crossarm is located below the ground wire crossarm, and the conductor crossarm comprises an upper double-circuit conductor crossarm and a lower double-circuit conductor crossarm; the upper double-circuit conductor crossarm is located above the lower double-circuit conductor crossarm, and the upper double-circuit conductor crossarm and the lower double-circuit conductor crossarm have the same number of layers.
[0006] Furthermore, the angle between the ground wire cross arm, the upper double-circuit conductor cross arm and the lower double-circuit conductor cross arm in the horizontal direction is 90°.
[0007] Furthermore, the ground wire cross arm is a layer.
[0008] Furthermore, the conductor cross arm has 6 layers.
[0009] Furthermore, the vertical distance between each upper double-circuit conductor cross arm and the lower double-circuit conductor cross arm is 6.6 to 7.2 meters.
[0010] Furthermore, the upper double-circuit conductor cross arm and the lower double-circuit conductor cross arm are both drum-shaped structures.
[0011] Furthermore, the ground wire cross arm is connected to the tower body through a node plate, and the ground wire cross arm is arranged symmetrically with respect to the vertical center line of the tower body. The ground wire cross arm is also provided with a ground wire hanging point for hanging the ground wire, and there are multiple ground wire hanging points.
[0012] Furthermore, the conductor cross arms are connected to the tower body through node plates, and the conductor cross arms are arranged symmetrically with respect to the vertical center line of the tower body.
[0013] Furthermore, the ground wire cross arm includes a double-circuit side and a four-circuit side. The two double-circuit sides of the ground wire cross arm are respectively connected to two ground wires, and the four-circuit side is connected to three ground wires.
[0014] Furthermore, the tower body, ground wire cross arm and conductor cross arm are made of alloy steel. Beneficial effects
[0015] This utility model integrates two traditional double-circuit disconnect towers into a single, four-circuit tower. This reduces the number of towers and the actual floor space, narrows the corridor width, and saves investment costs. It is particularly suitable for double-circuit disconnection in areas with limited access resources. At the same time, a single tower allows for dual disconnection of the upper and lower layers of a double-circuit line, avoiding line crossing and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The utility model is a structural schematic diagram of a four-circuit branch tower for an overhead transmission line.
[0017] Figure 2 The utility model is a schematic diagram of the ground wire cross arm ground wire connection of the four-circuit branch tower of the overhead transmission line.
[0018] Figure numerals: 1, ground wire crossarm; 2, double-circuit conductor crossarm on the first floor; 3, double-circuit conductor crossarm on the second floor; 4, double-circuit conductor crossarm on the third floor; 5, double-circuit conductor crossarm on the first floor; 6, double-circuit conductor crossarm on the second floor; 7, double-circuit conductor crossarm on the third floor; 8, tower body; 9, first ground wire on the double-circuit side of one side; 10, second ground wire on the double-circuit side of one side; 11, first ground wire on the double-circuit side of two sides, 12, second ground wire on the double-circuit side of two sides; 13, first ground wire on the four-circuit side; 14, second ground wire on the four-circuit side; 15, third ground wire on the four-circuit side. DETAILED DESCRIPTION
[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Example
[0020] A four-circuit branch tower for an overhead power transmission line comprises a tower body 8, a ground wire crossarm, and a conductor crossarm. The ground wire crossarm is located at the topmost layer of the tower body 8, and the conductor crossarm is located below the ground wire crossarm. The conductor crossarms include an upper double-circuit conductor crossarm and a lower double-circuit conductor crossarm. The upper double-circuit conductor crossarm is located above the lower double-circuit conductor crossarm. The ground wire crossarm, the upper double-circuit conductor crossarm, and the lower double-circuit conductor crossarm are at a 90° horizontal angle, i.e., the upper four layers of crossarms are perpendicular to the lower three layers of crossarms. The ground wire crossarm is one layer, and the conductor crossarm is six layers; the upper double-circuit conductor crossarm and the lower double-circuit conductor crossarm have the same number of layers. The vertical distance between each upper double-circuit conductor crossarm and the lower double-circuit conductor crossarm is 6.6 to 7.2 meters. The upper double-circuit conductor crossarm and the lower double-circuit conductor crossarm each have a drum-shaped structure.
[0021] The ground wire cross arm is connected to the tower body through a node plate. The ground wire cross arm is arranged at the uppermost layer of the tower body and is symmetrically arranged with respect to the vertical center line of the tower body. The ground wire cross arm is also provided with a ground wire hanging point for hanging the ground wire, and there are multiple ground hanging points; the conductor cross arm is connected to the tower body through a node plate. The conductor cross arm is arranged symmetrically with respect to the vertical center line of the tower body. Example
[0022] A four-circuit branch tower for an overhead power transmission line comprises a tower body 8, a ground wire crossarm, and a conductor crossarm. The ground wire crossarm is located at the topmost layer of the tower body 8, and the conductor crossarm is located below the ground wire crossarm. The conductor crossarm comprises an upper double-circuit conductor crossarm and a lower double-circuit conductor crossarm. The upper double-circuit conductor crossarm is located above the lower double-circuit conductor crossarm. The horizontal angles of the ground wire crossarm, the upper double-circuit conductor crossarm, and the lower double-circuit conductor crossarm are 90°, i.e., the upper four layers of crossarms are perpendicular to the lower three layers of crossarms. The ground wire crossarm is one layer, and the conductor crossarm is six layers; the upper double-circuit conductor crossarm and the lower double-circuit conductor crossarm have the same number of layers.
[0023] The upper double-circuit conductor cross-arm includes a first-layer upper double-circuit conductor cross-arm 2, a second-layer upper double-circuit conductor cross-arm 3 and a third-layer upper double-circuit conductor cross-arm 4 arranged in sequence from top to bottom; the lower double-circuit conductor cross-arm includes a first-layer lower double-circuit conductor cross-arm 5, a second-layer lower double-circuit conductor cross-arm 6 and a third-layer lower double-circuit conductor cross-arm 7 arranged in sequence from top to bottom.
[0024] The ground wire crossarm includes a double-circuit side and a four-circuit side, which are respectively located in the straight direction and vertical direction of the double-circuit line. The two double-circuit sides of the ground wire crossarm can be connected to two ground wires respectively, wherein the double-circuit first side includes a first ground wire 9 on one double-circuit side and a second ground wire 10 on one double-circuit side, and the double-circuit second side includes a third ground wire 11 on two double-circuit sides and a fourth ground wire 12 on two double-circuit sides; the four-circuit side can be connected to three ground wires, including a first ground wire 13 on the four-circuit side, a second ground wire 14 on the four-circuit side, and a third ground wire 15 on the four-circuit side, with the connection points respectively located at the ends of the ground wire crossarm. The ground wire crossarm and the conductor crossarm are vertically connected to the tower body. The tower body, ground wire crossarm, and conductor crossarm are made of alloy steel, specifically Q420B, Q355B, and Q235B.
[0025] This overhead transmission line four-circuit branch tower can achieve dual open loops on the upper and lower levels of a double-circuit line. Existing double-circuit, double-open loop systems require two pole towers, resulting in a larger power corridor and floor space, increasing investment costs. With this four-circuit branch tower, only one pole tower is needed, reducing the actual tower footprint and the width of the power corridor, minimizing the impact of foundation construction on the surrounding environment, reducing the impact of the power corridor on planning, and saving investment costs. Furthermore, a single pole tower can achieve dual open loops on the upper and lower levels of a double-circuit line, avoiding line crossings and reducing safety hazards.
[0026] This utility model integrates two traditional double-circuit disconnect towers into a single, four-circuit tower. This reduces the number of towers and the actual floor space, narrows the corridor width, and saves investment costs. It is particularly suitable for double-circuit disconnection in areas with limited access resources. At the same time, a single tower allows for dual disconnection of the upper and lower layers of a double-circuit line, avoiding line crossing and reducing safety hazards.
[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the scope of protection of the present invention.
Claims
1. A four-circuit branch tower for an overhead transmission line, characterized in that: It includes a tower body, a ground wire cross arm and a conductor cross arm, wherein the ground wire cross arm is located at the uppermost layer of the tower body, and the conductor cross arm is located below the ground wire cross arm, and the conductor cross arm includes an upper double-circuit conductor cross arm and a lower double-circuit conductor cross arm; The upper double-circuit conductor crossarm is located above the lower double-circuit conductor crossarm, and the upper double-circuit conductor crossarm and the lower double-circuit conductor crossarm have the same number of layers; the ground wire crossarm includes a double-circuit side and a four-circuit side, the two double-circuit sides of the ground wire crossarm are respectively connected to two ground wires, and the four-circuit side is connected to three ground wires; the horizontal angle between the ground wire crossarm, the upper double-circuit conductor crossarm and the lower double-circuit conductor crossarm is 90°; the vertical distance between each conductor crossarm is 6.6~7.2 meters.
2. The four-circuit branch tower for overhead power transmission lines according to claim 1, characterized in that: The ground wire cross arm is one layer.
3. The four-circuit branch tower for overhead power transmission lines according to claim 1, characterized in that: The conductor cross arm has 6 layers.
4. The four-circuit branch tower for overhead power transmission lines according to claim 1, characterized in that: The upper double-circuit conductor cross arm and the lower double-circuit conductor cross arm are both drum-shaped structures.
5. The four-circuit branch tower for overhead power transmission lines according to claim 1, characterized in that: The ground wire cross arm is connected to the tower body through a node plate. The ground wire cross arm is arranged symmetrically with respect to the vertical center line of the tower body. The ground wire cross arm is also provided with a ground wire hanging point for hanging the ground wire, and a plurality of ground wire hanging points are provided.
6. The four-circuit branch tower for overhead power transmission lines according to claim 1, characterized in that: The conductor cross arms are connected to the tower body through node plates, and the conductor cross arms are arranged symmetrically with respect to the central vertical line of the tower body.
7. The four-circuit branch tower for overhead power transmission lines according to claim 1, characterized in that: The tower body, ground wire cross arm and conductor cross arm are made of alloy steel.