Outer-side single-open-loop self-drilling strain tower of double-circuit power transmission line
By adopting a single open-loop self-drilling tension tower arrangement method on the outside of the double-loop transmission line, the high cost and large-scale environmental impact of the open-loop method on the outside of the double-loop transmission line in the prior art is solved, and more efficient construction and lower environmental impact are achieved.
Patent Information
- Application Number
- CN202421327932.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-12
AI Technical Summary
The open loop method on the outside of the existing double-return transmission line has a large workload, high cost, and great impact on the environment, and a long power outage time.
The single open-loop self-drilling and crossing tension tower on the outer side of the double-loop transmission line is adopted. Through the combined arrangement of the common tower body, open-loop circuit ground crossing, direct-loop circuit ground crossing, direct-loop circuit conductor crossing and open-loop circuit conductor crossing, the single-side open-loop transmission line is realized.
It reduces workload and power outage time, reduces construction costs and environmental impact, while simplifying the structure of the tower and reducing the footprint.
Smart Images
Figure CN222835481U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a single open-loop self-drilling tension tower on the outer side of a double-circuit power transmission line. Background Art
[0002] With the massive development of my country's new energy transmission projects, the line density continues to increase, and the grid planning has become more complicated. For many transmission and collection lines, a large number of T-connections are required to be connected to the original main lines. For double-circuit transmission lines, one loop needs to be opened on the outside. Figure 1 As shown, in China, the iron towers on both sides of the original line opening point are generally transformed into tension towers with staggered arrangement of inner and outer loops, and a new tension tower is built on the open loop side. The three newly built iron towers are used to form a triangular site to meet the requirements of the outer loop opening. This method has a large workload, high cost, great impact on the environment, and long power outage time. Utility Model Content
[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.
[0004] The technical problem to be solved by the utility model is that the existing setting method has the problems of large workload, high cost, great impact on the environment and long power outage time for the system demand of double-circuit transmission line which requires one circuit to be open-loop on the outside.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a single open-loop self-drilling tension tower on the outer side of a double-circuit transmission line, comprising a common tower body, an open-loop ground wire crossarm, a straight-through loop ground wire crossarm, a straight-through loop conductor crossarm and an open-loop loop conductor crossarm, the open-loop ground wire crossarm and the straight-through loop ground wire crossarm are arranged horizontally, the straight-through loop conductor crossarm and the open-loop loop conductor crossarm are arranged vertically, the open-loop ground wire crossarm is arranged on one side of the top of the common tower body, and the straight-through loop ground wire crossarm is arranged on one side of the top of the common tower body. Placed on the other side of the common tower body, the straight-through loop ground wire is arranged on both sides of the straight-through loop ground wire crossarm through a tension string, the straight-through loop conductor crossarm is arranged below the straight-through loop ground wire crossarm, the straight-through loop conductor is arranged on both sides of the straight-through loop conductor crossarm through a tension string and connected with a jumper, the open-loop loop conductor crossarm is arranged in a 90° T-shape below the straight-through loop conductor crossarm, and the open-loop loop conductor is opened from the outside of the open-loop loop conductor crossarm and then turned sideways at the end of the open-loop loop conductor crossarm to form an outer open-loop line.
[0006] As a preferred solution for the single open-loop self-drilling tension tower on the outer side of the double-circuit transmission line described in the utility model, the straight-through loop conductor crossarm includes a straight-through loop upper phase conductor crossarm, a straight-through loop middle phase conductor crossarm and a straight-through loop lower phase conductor crossarm, and the straight-through loop upper phase conductor crossarm, the straight-through loop middle phase conductor crossarm and the straight-through loop lower phase conductor crossarm are arranged in sequence from top to bottom below the straight-through loop ground wire crossarm of the common tower body, so as to better achieve the effect of single-side open-loop self-drilling of the double-circuit transmission line.
[0007] As a preferred solution of the single open-loop self-drilling tension tower on the outer side of the double-circuit transmission line described in the utility model, the open-loop circuit conductor crossarm includes an open-loop circuit upper phase conductor crossarm, an open-loop circuit middle phase conductor crossarm and an open-loop circuit lower phase conductor crossarm, and the open-loop circuit upper phase conductor crossarm, the open-loop circuit middle phase conductor crossarm and the open-loop circuit lower phase conductor crossarm are arranged in sequence from top to bottom below the straight-through circuit lower phase conductor crossarm of the common tower body, so as to better achieve the effect of single-side open-loop self-drilling of the double-circuit transmission line.
[0008] As a preferred solution for the single open-loop self-drilling tension tower on the outer side of the double-circuit transmission line described in the utility model, the length of the open-loop ground wire crossarm is shorter than the length of the straight-loop ground wire crossarm, so that the ground wire can better protect the conductor and reduce the workload and construction cost.
[0009] As a preferred solution for the single open-loop self-drilling tension tower on the outer side of the double-circuit transmission line described in the utility model, the cross arm of the straight-through loop conductor is arranged on one side, and the cross arm of the open-loop loop conductor is arranged on both sides, so that there is a sufficient safety distance between the conductor and the tower and the construction cost is reduced.
[0010] As a preferred solution for the single open-loop self-drilling tension tower on the outer side of the double-circuit transmission line described in the utility model, the open-loop ground wire crossarm, the straight-through loop ground wire crossarm, the straight-through loop conductor crossarm and the open-loop loop conductor crossarm all adopt the structure of an ordinary flat crossarm, which not only ensures that there is a sufficient safety distance between the conductor and the tower, but also facilitates the processing of the tower.
[0011] Beneficial effect: The straight-through loop conductor crossarm and the open-loop loop conductor crossarm in the utility model are arranged in a 90° T-shaped structure, achieving the effect of single-sided open-loop self-drilling of the double-circuit transmission line, and simplifying the original three-base tension tower to one double-circuit transmission line outer open-loop tower, which not only reduces the workload and power outage time, but also reduces the construction cost, while also reducing the footprint of the tower and reducing the impact on the environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:
[0013] Figure 1 This is a structural schematic diagram of the conventional tower construction solution for the outer open loop.
[0014] Figure 2 This is the main view of the single open-loop self-drilling tension tower on the outer side of a double-circuit transmission line.
[0015] Figure 3 This is the left view of the single open-loop self-drilling tension tower on the outer side of a double-circuit transmission line.
[0016] Figure 4 It is a schematic diagram of the three-dimensional structure after the single open-loop self-drilling under the tension tower line on the outer side of the double-circuit transmission line.
[0017] In the figure: 1. Common tower body; 2. Open-loop ground wire cross arm; 3. Straight-through loop ground wire cross arm; 4. Straight-through loop conductor cross arm; 41. Straight-through loop upper phase conductor cross arm; 42. Straight-through loop middle phase conductor cross arm; 43. Straight-through loop lower phase conductor cross arm; 5. Open-loop loop conductor cross arm; 51. Open-loop loop upper phase conductor cross arm; 52. Open-loop loop middle phase conductor cross arm; 53. Open-loop loop lower phase conductor cross arm. DETAILED DESCRIPTION
[0018] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0020] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.
[0021] Example
[0022] Reference Figures 1 to 4The present embodiment provides a single open-loop self-drilling tension tower for a double-circuit transmission line, comprising a common tower body 1, an open-loop ground wire crossarm 2, a through-loop ground wire crossarm 3, a through-loop conductor crossarm 4 and an open-loop conductor crossarm 5. The open-loop ground wire crossarm 2 and the through-loop ground wire crossarm 3 are arranged horizontally, the through-loop conductor crossarm 4 and the open-loop conductor crossarm 5 are arranged vertically, the open-loop ground wire crossarm 2 is arranged on one side of the top of the common tower body 1, and the through-loop ground wire crossarm 3 is arranged on the common tower body. On the other side of 1, the straight-through loop ground wire is arranged on both sides of the straight-through loop ground wire cross arm 3 through a tension string, the straight-through loop conductor cross arm 4 is arranged below the straight-through loop ground wire cross arm 3, the straight-through loop conductor is arranged on both sides of the straight-through loop conductor cross arm 4 through a tension string and connected with a jumper, the open-loop loop conductor cross arm 5 is arranged in a 90° T-shape below the straight-through loop conductor cross arm 4, and the open-loop loop conductor is opened from the outside of the open-loop loop conductor cross arm 5 and then turned sideways at the end of the open-loop loop conductor cross arm 5 to form an outer open-loop circuit.
[0023] The public tower body 1, as the installation foundation of the entire tension tower, plays a supporting role, that is, the public tower body 1 bears all the loads. An open-loop ground wire crossarm 2 is fixedly installed horizontally on the left side of the top of the public tower body 1, which is used to install the open-loop ground wire, that is, the open-loop ground wire is led out from the end of the open-loop ground wire crossarm 2, and then is consistent with the direction of the open-loop conductor. A straight-through loop ground wire crossarm 3 is fixedly installed horizontally on the right side of the top of the public tower body 1. The open-loop ground wire crossarm 2 and the straight-through loop ground wire crossarm 3 are on the same horizontal line. The straight-through loop ground wire is installed on both sides of the straight-through loop ground wire crossarm 3 through a tension string. A straight-through loop conductor crossarm 4 is fixedly installed below the straight-through loop ground wire crossarm 3, so that the straight-through loop conductor can be installed on both sides of the straight-through loop conductor crossarm 4 through the tension string and connected with a jumper to form a straight-through loop. An open-loop loop conductor crossarm 5 is installed below the straight-through loop conductor crossarm 4. The line cross arm 5 and the straight-through loop conductor cross arm 4 are arranged in a 90° T-shaped structure, and the open-loop loop conductor is connected to one end of the open-loop loop conductor cross arm 5 in a direction parallel to the open-loop loop conductor cross arm 5 through the corresponding tension string, and is respectively led out from the other side of the open-loop loop conductor cross arm 5 in a direction perpendicular to the open-loop loop conductor cross arm 5, and the conductors are connected through jumpers to form an open-loop circuit, thereby achieving the effect of single-sided open-loop self-drilling of the double-circuit transmission line, and simplifying the original three tension towers to one double-circuit transmission line outer open-loop tower, which not only reduces the workload and power outage time, but also reduces the construction cost, while also reducing the permanent footprint of the iron tower and reducing the impact on the environment; it should be noted that the present embodiment adopts a tension-resistant iron tower, the straight-through loop allows a rotation angle range of -20 to 20 degrees, and the allowable rotation angle range after the open loop is -15 to 15 degrees, which can meet the needs of single-sided open loop of most double-circuit transmission lines.
[0024] Specifically, the straight-through loop conductor crossarm 4 includes a straight-through loop upper phase conductor crossarm 41, a straight-through loop middle phase conductor crossarm 42 and a straight-through loop lower phase conductor crossarm 43. The straight-through loop upper phase conductor crossarm 41, the straight-through loop middle phase conductor crossarm 42 and the straight-through loop lower phase conductor crossarm 43 are arranged in sequence from top to bottom below the straight-through loop ground wire crossarm 3 of the common tower body 1.
[0025] The through loop conductor cross arm 4 is mainly composed of a through loop upper phase conductor cross arm 41, a through loop middle phase conductor cross arm 42 and a through loop lower phase conductor cross arm 43. The through loop upper phase conductor cross arm 41 is fixedly installed at the bottom of the through loop ground wire cross arm 3, that is, the top of the through loop upper phase conductor cross arm 41 is in contact with the bottom of the through loop ground wire cross arm 3, and the through loop middle phase conductor cross arm 42 is fixedly installed below the through loop upper phase conductor cross arm 41. The through loop upper phase conductor cross arm 41 and the through loop middle phase conductor cross arm 43 are connected to each other. There is a certain distance between the phase conductor cross arms 42, and a direct loop lower phase conductor cross arm 43 is fixedly installed below the direct loop middle phase conductor cross arm 42. There is a certain distance between the direct loop middle phase conductor cross arm 42 and the direct loop lower phase conductor cross arm 43, that is, the direct loop upper phase conductor cross arm 41, the direct loop middle phase conductor cross arm 42 and the direct loop lower phase conductor cross arm 43 are vertically installed on the common tower body 1 from top to bottom in sequence, so as to better achieve the effect of single-side open-loop self-drilling of the double-circuit transmission line.
[0026] Specifically, the open-loop circuit conductor cross arm 5 includes an open-loop upper phase conductor cross arm 51, an open-loop middle phase conductor cross arm 52 and an open-loop lower phase conductor cross arm 53. The open-loop upper phase conductor cross arm 51, the open-loop middle phase conductor cross arm 52 and the open-loop lower phase conductor cross arm 53 are sequentially arranged from top to bottom below the through-loop lower phase conductor cross arm 43 of the common tower body 1.
[0027] The open-loop circuit conductor cross arm 5 is mainly composed of an upper phase conductor cross arm 51 of the open-loop circuit, a middle phase conductor cross arm 52 of the open-loop circuit, and a lower phase conductor cross arm 53 of the open-loop circuit. The upper phase conductor cross arm 51 of the open-loop circuit and the lower phase conductor cross arm 43 of the straight-through circuit are fixedly installed below the lower phase conductor cross arm 43 of the straight-through circuit in a 90° T-shape, and there is a certain distance between the upper phase conductor cross arm 51 of the open-loop circuit and the lower phase conductor cross arm 43 of the straight-through circuit. The middle phase conductor cross arm 52 of the open-loop circuit is fixedly installed directly below the upper phase conductor cross arm 51 of the open-loop circuit. The upper phase conductor cross arm 51 of the open-loop circuit and the middle phase conductor cross arm 43 of the open-loop circuit are fixedly installed below the upper phase conductor cross arm 51 of the open-loop circuit. There is a certain distance between the cross arms 52, and the lower phase conductor cross arm 53 of the open loop is fixedly installed directly below the middle phase conductor cross arm 52 of the open loop. There is a certain distance between the middle phase conductor cross arm 52 of the open loop and the lower phase conductor cross arm 53 of the open loop, that is, the upper phase conductor cross arm 51 of the open loop, the middle phase conductor cross arm 52 of the open loop and the lower phase conductor cross arm 53 of the open loop are vertically installed from top to bottom in sequence below the lower phase conductor cross arm 43 of the straight-through loop of the common tower body 1 in a 90° T-shape, so as to better achieve the effect of single-sided open-loop self-drilling of the double-circuit transmission line.
[0028] Furthermore, the length of the open-loop ground wire cross arm 2 in this embodiment is shorter than the length of the straight-loop ground wire cross arm 3, so that the ground wire can better protect the conductor and reduce the workload and construction cost.
[0029] Furthermore, the straight-through loop conductor crossarm 4 in this embodiment is arranged on one side, that is, the straight-through loop conductor crossarm 4 is only installed on one side of the common tower body 1, and is not installed on the other side, and the open-loop loop conductor crossarm 5 is arranged on both sides, that is, the open-loop loop conductor crossarm 5 is symmetrically installed on both sides of the common tower body 1, so that there is a sufficient safety distance between the conductor and the tower, and the construction cost of the entire tower is reduced.
[0030] Furthermore, the open-loop ground wire crossarm 2, the straight-through loop ground wire crossarm 3, the straight-through loop conductor crossarm 4 and the open-loop loop conductor crossarm 5 in this embodiment all adopt the structure of an ordinary flat crossarm, which not only ensures that there is a sufficient safety distance between the conductor and the tower, but also facilitates the processing of the entire tower.
[0031] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. Single open-loop self-drilling tension tower on the outer side of double-circuit transmission line, characterized by: The utility model comprises a common tower body (1), an open-loop ground wire cross arm (2), a straight-through loop ground wire cross arm (3), a straight-through loop conductor cross arm (4) and an open-loop loop conductor cross arm (5), wherein the open-loop ground wire cross arm (2) and the straight-through loop ground wire cross arm (3) are arranged horizontally, and the straight-through loop conductor cross arm (4) and the open-loop loop conductor cross arm (5) are arranged vertically, the open-loop ground wire cross arm (2) is arranged on one side of the top of the common tower body (1), and the straight-through loop ground wire cross arm (3) is arranged on the other side of the common tower body (1). The through-loop ground wire is arranged on both sides of the through-loop ground wire cross arm (3) through a tension string, the through-loop conductor cross arm (4) is arranged below the through-loop ground wire cross arm (3), the through-loop conductor is arranged on both sides of the through-loop conductor cross arm (4) through a tension string and connected with a jumper, the open-loop conductor cross arm (5) is arranged in a 90° T-shape below the through-loop conductor cross arm (4), and the open-loop conductor is opened from the outside of the open-loop conductor cross arm (5) and then turned sideways at the end of the open-loop conductor cross arm (5) to form an outer open-loop circuit.
2. The outer single open-loop self-drilling tension tower for double-circuit power transmission lines according to claim 1, characterized in that: The through loop conductor cross arm (4) comprises a through loop upper phase conductor cross arm (41), a through loop middle phase conductor cross arm (42) and a through loop lower phase conductor cross arm (43), wherein the through loop upper phase conductor cross arm (41), the through loop middle phase conductor cross arm (42) and the through loop lower phase conductor cross arm (43) are sequentially arranged from top to bottom below the through loop ground wire cross arm (3) of the common tower body (1).
3. The outer single open-loop self-drilling tension tower of a double-circuit power transmission line according to claim 2, characterized in that: The open loop conductor cross arm (5) comprises an open loop upper phase conductor cross arm (51), an open loop middle phase conductor cross arm (52) and an open loop lower phase conductor cross arm (53), wherein the open loop upper phase conductor cross arm (51), the open loop middle phase conductor cross arm (52) and the open loop lower phase conductor cross arm (53) are sequentially arranged from top to bottom below the through loop lower phase conductor cross arm (43) of the common tower body (1).
4. The outer single open-loop self-drilling tension tower for double-circuit power transmission lines according to claim 1, characterized in that: The length of the open-loop ground wire cross arm (2) is shorter than the length of the straight-through loop ground wire cross arm (3).
5. The outer single open-loop self-drilling tension tower for double-circuit power transmission lines according to claim 1, characterized in that: The straight-through loop conductor cross arm (4) is arranged on one side, and the open-loop loop conductor cross arm (5) is arranged on both sides.
6. The outer single open-loop self-drilling tension tower for double-circuit power transmission lines according to claim 1, characterized in that: The open-loop ground wire cross arm (2), the through-loop ground wire cross arm (3), the through-loop conductor cross arm (4) and the open-loop conductor cross arm (5) all adopt the structure of an ordinary flat cross arm.