A new type of tower with double circuits

Abstract

The utility model provides a double circuit novel tower, including tower body and cross arm structure, the cross arm structure is cross -shaped arrangement, including front cross arm and rear cross arm, the front cross arm length is shorter than rear cross arm, is used for wire jumper to wind around and connects to realize big angle corner, the utility model discloses can realize the effect of reducing engineering cost and realizing single base tower to complete big angle corner.

Description

Technical Field

[0001] This utility model relates to the field of power transmission line tower structure technology, and in particular to a novel double-circuit tower. Background Technology

[0002] In overhead transmission lines, towers are crucial structures supporting the conductors. Currently, common double-circuit towers are suitable for turns from 0° to 90°. When the turn exceeds 90°, two angle towers are typically required for two separate turns, which not only occupies a large area but also involves complex construction and higher costs. This approach is often difficult to implement, especially in areas with restricted routes. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide a novel dual-loop tower that can reduce engineering costs and achieve large-angle rotation effect with a single tower.

[0004] This utility model is achieved by the following method: a novel double-circuit tower, including a tower body and a crossarm structure, wherein the crossarm structure is arranged in a cross shape, including a front crossarm and a rear crossarm, wherein the length of the front crossarm is shorter than that of the rear crossarm, and is used for wire jumper connection to achieve a large angle of rotation.

[0005] Furthermore, the length of the front crossbeam is 3 meters.

[0006] Furthermore, the rear crossarm is used to guide the jumper cable to the other side of the tower.

[0007] Furthermore, the tower head structure is optimized to accommodate jumper wire routing paths.

[0008] Furthermore, the novel dual-circuit tower is suitable for dual-circuit lines with turning angles of 90° to 170°.

[0009] The beneficial effects of this utility model are as follows: Through the cross-shaped crossarm structure design and the length difference between the front and rear crossarms, this utility model enables the conductor jumper winding path to adapt to the large-angle turning requirements, solving the problem that traditional double-circuit towers require multiple towers to turn in stages. It has the advantages of saving land resources, simplifying the construction process, reducing engineering costs, and enabling a single tower to complete a large-angle turning. Attached Figure Description

[0010] Figure 1 This is a front view of a novel dual-loop tower.

[0011] Figure 2 This is a top view of a novel dual-circuit tower.

[0012] Figure 3 This is a wiring diagram for a new type of dual-circuit tower. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Please see Figures 1 to 3 As shown, this utility model provides an embodiment: a novel double-circuit tower, including a tower body 1 and a crossarm structure 2. The crossarm structure 2 is arranged in a cross shape, including a front crossarm 21 and a rear crossarm 22. The front crossarm 21 is shorter than the rear crossarm 22 and is used for wire jumper connection to achieve a large angle of rotation.

[0015] The cross-shaped arrangement refers to four sets of crossarms orthogonally distributed on both sides of the tower. This can be achieved using a steel frame structure where the front and rear crossarm sets intersect perpendicularly with the left and right crossarm sets. This arrangement provides multi-dimensional space for conductor turning. The front crossarm being shorter than the rear crossarm means that the cantilever length of the front crossarm is less than the corresponding cantilever length of the rear crossarm. This length difference can be achieved by adjusting the position of the angle steel connection nodes. The shorter crossarm provides a near-end support point for the jumper, while the longer crossarm forms the far-end conductor guiding structure. Conductor jumper looping refers to creating an asymmetrical conductor channel through spatial misalignment between crossarms. This can be achieved by using suspension clamps and supporting insulators to achieve spatial turning of the conductor.

[0016] Specifically, the short front crossarm provides a fixed point for the jumper close to the tower, while the long rear crossarm extends further to form a conductor turning fulcrum. After the conductor is led out from the short front crossarm, it is three-dimensionally wound around the tower using the extended space of the long crossarm, avoiding the main tower structure. The tower head area optimizes the insulator string hanging point positions to form a three-dimensional channel to accommodate the jumper turning. In corner operation, conductors of different phases are arranged in layers using the length difference between the front and rear crossarms, eliminating the problem of insufficient electrical safety distance between multiple circuits.

[0017] Compared to existing technologies, traditional dual-tower schemes require two independent tower bases and two sets of crossarm systems, while this scheme can achieve turning using an asymmetrical crossarm layout on a single tower. In existing technologies, symmetrical crossarms lead to overlapping jumper paths; this scheme utilizes the difference in length between the front and rear crossarms to create staggered spaces, allowing the phase conductors to be arranged in layers within a three-dimensional space. Traditional schemes require additional land acquisition in restricted areas; this technology, through structural optimization, achieves a larger turning angle within the same land area.

[0018] Through the above technical solution, this application enables a single tower to support large-angle line turns from 90° to 170°, reducing the number of towers and foundation construction. In narrow terrains such as mountain valleys, this structure avoids the site requirements of two towers, reducing deforestation and earthwork excavation. During urban line reconstruction, this technology can complete large-angle turns within the existing line corridor without additional land acquisition and demolition.

[0019] Please continue reading. Figures 1 to 3 As shown, in one embodiment of this utility model, the length of the front crossbeam is 3 meters.

[0020] The length of the front crossarm refers to the horizontal extension distance of the transverse support member set on the front side of the tower. Specifically, it can be achieved by using a steel truss with bolt connection. This length is determined by comprehensively calculating the winding space required for the conductor jumper and the load-bearing capacity of the tower.

[0021] Specifically, when the length of the front crossarm is set to 3 meters, it can provide effective support for the wire jumper splicing within a limited space, while avoiding the tower body from becoming unbalanced due to excessive length. This length, combined with the extended layout of the rear crossarm, forms an asymmetrical cross-shaped structure, allowing the wire to complete the jumper splicing along the front crossarm within a 90° to 170° turning angle range, and then be guided to the other side of the tower body through the rear crossarm.

[0022] Compared with existing technologies, the front crossarm of traditional double-circuit towers is generally longer than 5 meters to meet the requirements of normal cornering, but it is prone to causing conflicts in jumper connection paths under large-angle working conditions. This solution shortens the front crossarm to 3 meters, making the tower head structure layout more compact while ensuring the jumper connection function, effectively reducing the lateral load on the tower body and reducing the footprint.

[0023] Through the above technical solution, this application enables a single tower to directly bear the conductor winding requirements under large-angle turning conditions, eliminating the drawback of the traditional solution requiring two corner towers, and significantly reducing the number of towers and construction complexity in areas with restricted routes.

[0024] Please continue reading. Figures 1 to 3 As shown, in one embodiment of this utility model, the rear crossarm is used to guide the jumper wire to the other side of the tower.

[0025] The rear crossarm refers to the support structure installed on the tower body facing away from the direction of the line's movement. It can be implemented using a horizontally extending steel truss structure, and its length design must meet the bending radius requirements of the jumper wire. Guiding the jumper wire to the other side of the tower body refers to adjusting the spatial orientation of the crossarm to create a continuous transition path for the jumper wire on the side of the tower body. This can be achieved by using conductor fixing hardware and suspension clamps at the ends of the crossarm.

[0026] Specifically, the rear crossarm extends symmetrically on both sides of the tower to form a supporting plane. The jumper cable extends from the end of this crossarm along the side wall of the tower to the other crossarm. When the line turns at an angle exceeding 90 degrees, the jumper cable completes the spatial turn guided by the rear crossarm, avoiding insufficient distance between the jumper cable and the tower due to excessive angle. The anti-torsion device installed at the end of the crossarm maintains the stable arrangement of the jumper cable under wind-induced vibration conditions.

[0027] Compared with existing technologies, traditional double-circuit towers require two towers to turn in sections when the turning angle exceeds 90 degrees. However, this solution uses the path guidance function of the rear crossarm to enable a single tower to achieve turning angles within 170 degrees, eliminating the land occupation requirement of the transition section between the towers.

[0028] Through the above technical solution, this application enables dual-circuit transmission lines to complete large-angle turns in restricted areas using a single tower, reducing the area occupied by the tower foundation and the number of erection operations, while avoiding the risk of sudden changes in conductor tension at the connection of multi-tower angle towers.

[0029] Please continue reading. Figures 1 to 3 As shown, in one embodiment of this utility model, the tower head structure is optimized to accommodate jumper wire routing paths.

[0030] The tower head structure refers to the supporting frame at the top of the transmission tower that carries the insulator strings and conductors. It can be implemented using a truss or beam structure, and its spatial layout can be adjusted to provide a bending channel for jumpers.

[0031] Among them, the jumper winding path refers to the electrical connection trajectory formed by the conductor on both sides of the corner tower. Specifically, it can be guided by setting suspension clamps or support hardware. The optimized tower head structure can avoid interference between the jumper and the tower body components.

[0032] Specifically, the crossarm connection points and support components of the tower head structure have been spatially adjusted to ensure that the jumper wire maintains a smooth bending arc when making large-angle turns. A staggered layout of the insulator string suspension points and conductor fixing points in the tower head area provides sufficient electrical clearance for jumper wire splicing. By redesigning the relative positions of the various components of the tower head, the jumper wire can still form a splice shape that meets electrical safety distance requirements even at a 170° turn.

[0033] Compared to existing technologies, traditional tower head structures do not consider the space requirements for jumpers at large turning angles, necessitating the use of two towers for segmented turning when the angle exceeds 90°. This solution, through optimized arrangement of tower head components, allows a single tower to meet the jumper connection requirements for 170° turning angles, eliminating the need for a second corner tower.

[0034] Through the above technical solution, this application effectively solves the problem of insufficient space for single-tower jumper wiring under large-angle turning conditions, and avoids the increase in land area and construction costs caused by adding a second tower. It is particularly suitable for high-voltage line construction scenarios in urban corridor restricted areas.

[0035] Please continue reading. Figures 1 to 3 As shown, in one embodiment of this utility model, the novel double-circuit tower is suitable for double-circuit lines with a turning angle of 90° to 170°.

[0036] Among them, the 90° to 170° turning angle condition for double-circuit lines refers to the range of horizontal turning angles that cover large-angle requirements. This can be achieved by adjusting the geometric relationship between the tower and the crossarm, for example, by using a cross-shaped crossarm structure to allocate jumper space. This feature ensures that a single tower can meet the large-angle turning requirements by limiting the boundary conditions of the turning angle range, avoiding the redundant design of multiple towers superimposed for turning in traditional solutions.

[0037] Specifically, the spatial layout of the tower body and crossarm structure is configured to allow the conductor to complete large-angle turns on a single tower. By optimizing the tower head structure to accommodate jumper routing paths, the length difference between the front and rear crossarms creates asymmetrical support, enabling the conductor to complete turns within a 90° to 170° turning range via jumper routing. The geometric constraints of the jumper routing paths are achieved through the crossarm length difference and tower head space optimization, without requiring an additional number of towers.

[0038] Compared to existing technologies, traditional double-circuit towers require two towers to be turned in stages when the angle exceeds 90°, resulting in increased floor space and a more complex construction process. This solution achieves large-angle turns using a single tower, reducing the constraints on route planning imposed by the number of towers, simplifying the construction steps for conductor turning, and reducing dependence on terrain conditions.

[0039] Through the above technical solution, this application solves the problems of excessive land occupation and complex construction caused by the need for multiple towers to cooperate when making large-angle turns using traditional double-circuit towers, making it particularly suitable for areas with restricted routes. Achieving large-angle turns with a single tower reduces the number of tower foundations and associated construction costs, improving the economy and implementation efficiency of the line turning scheme.

[0040] 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 double-circuit tower, comprising a tower body and a crossarm structure, characterized in that: The crossarm structure is arranged in a cross shape, including a front crossarm and a rear crossarm. The front crossarm is shorter than the rear crossarm and is used for wire jumper connections to achieve large-angle turns.

2. The novel dual-loop tower according to claim 1, characterized in that: The length of the front crossbeam is 3 meters.

3. A novel dual-loop tower according to claim 1, characterized in that: The rear crossarm is used to guide the jumper wire to the other side of the tower.

4. A novel dual-loop tower according to claim 1, characterized in that: The novel dual-circuit tower is suitable for dual-circuit lines with turning angles of 90° to 170°.

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