Outer-side single-open-loop self-spanning strain tower of double-circuit power transmission line

Abstract

The utility model relates to an outer-side single-open-loop self-spanning strain tower of a double-circuit transmission line, which comprises a public tower body, an open-loop loop ground wire cross arm, a straight-through loop ground wire cross arm, an open-loop loop wire cross arm and a straight-through loop wire cross arm, and the open-loop loop ground wire cross arm and the straight-through loop ground wire cross arm are horizontally arranged. The open-loop loop wire cross arm and the straight-through loop wire cross arm are vertically arranged, the open-loop loop ground wire cross arm is arranged on one side of the top of the public tower body, and the straight-through loop ground wire cross arm is arranged on the other side of the public tower body. The open-loop loop wire cross arm is arranged below the open-loop loop ground wire cross arm in a 90-degree T shape, and the straight-through loop wire cross arm is arranged below the open-loop loop wire cross arm in a 90-degree T shape. The open-loop loop wire cross arm and the straight-through loop wire cross arm are arranged in a vertical 90-degree T-shaped structure, so that the single-side open-loop self-spanning effect of the double-circuit power transmission line is realized.

Description

Technical Field

[0001] The utility model relates to a single open-loop self-spanning 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-spanning 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, an open-loop conductor crossarm and a straight-through loop conductor crossarm, the open-loop ground wire crossarm and the straight-through loop ground wire crossarm are arranged horizontally, the open-loop conductor crossarm and the straight-through 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 the upper side of the tower body. 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 open-loop loop conductor crossarm is arranged in a 90° T-shape below the open-loop loop ground wire 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, the straight-through loop conductor crossarm is arranged in a 90° T-shape below the open-loop loop conductor crossarm, and 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.

[0006] As a preferred solution of the single open-loop self-spanning 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 open-loop circuit ground wire crossarm of the common tower body, so as to better achieve the effect of single-side open-loop self-spanning of the double-circuit transmission line.

[0007] As a preferred solution for the single open-loop self-spanning 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 open-loop lower phase conductor crossarm of the common tower body, so as to better achieve the effect of single-side open-loop self-spanning of the double-circuit transmission line.

[0008] As a preferred solution for the single open-loop self-spanning 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-spanning tension tower on the outer side of the double-circuit transmission line described in the utility model, the cross arms of the open-loop conductor are arranged on both sides, and the cross arms of the straight-through circuit conductor are arranged on one side, 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-spanning 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 open-loop conductor crossarm and the straight-through circuit conductor crossarm in the utility model are arranged in a 90° T-shaped structure, achieving the effect of single-sided open-loop self-crossing 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-spanning 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-spanning 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 of a double-circuit transmission line with a single open loop on the outside and a self-crossing tension tower 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. Open-loop loop conductor cross arm; 41. Open-loop upper phase conductor cross arm; 42. Open-loop middle phase conductor cross arm; 43. Open-loop lower phase conductor cross arm; 5. Straight-through loop conductor cross arm; 51. Straight-through loop upper phase conductor cross arm; 52. Straight-through loop middle phase conductor cross arm; 53. Straight-through 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-spanning tension tower for a double-circuit transmission line, comprising a common tower body 1, an open-loop ground wire crossarm 2, a straight-through loop ground wire crossarm 3, an open-loop conductor crossarm 4, and a straight-through loop conductor crossarm 5. The open-loop ground wire crossarm 2 and the straight-through loop ground wire crossarm 3 are arranged horizontally, and the open-loop conductor crossarm 4 and the straight-through 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 straight-through loop ground wire crossarm 3 is arranged on the other side of the common tower body 1. On one side, the straight-through loop ground wire is arranged on both sides of the straight-through loop ground wire crossarm 3 through a tension string, the open-loop loop conductor crossarm 4 is arranged in a 90° T-shape below the open-loop loop ground wire crossarm 2, and the open-loop loop conductor is opened from the outside of the open-loop loop conductor crossarm 4 and then turned sideways at the end of the open-loop loop conductor crossarm 4 to form an outer open-loop line, the straight-through loop conductor crossarm 5 is arranged in a 90° T-shape below the open-loop loop conductor crossarm 4, and the straight-through loop conductor is arranged on both sides of the straight-through loop conductor crossarm 5 through a tension string and connected with a jumper.

[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 cross arm 2 is horizontally fixedly installed 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 cross arm 2, and then is consistent with the direction of the open-loop conductor. A straight-through ground wire cross arm 3 is horizontally fixedly installed on the right side of the top of the public tower body 1. The open-loop ground wire cross arm 2 and the straight-through ground wire cross arm 3 are on the same horizontal line. The straight-through ground wire is installed on both sides of the straight-through ground wire cross arm 3 through a tension string. An open-loop conductor cross arm 4 is fixedly installed below the open-loop ground wire cross arm 2. The open-loop conductor cross arm 4 and the open-loop ground wire cross arm 2 are arranged in a 90° T-shaped structure. The open-loop conductor is connected to one end of the open-loop conductor cross arm 4 in a direction parallel to the open-loop conductor cross arm 4 through the corresponding tension strings, and is respectively connected from the open-loop conductor cross arm 4 The other side is led out in a direction perpendicular to the open-loop circuit conductor cross arm 4, and the conductors are connected by jumpers to form an open-loop circuit. A straight-through circuit conductor cross arm 5 is installed below the open-loop circuit conductor cross arm 4. A 90° T-shaped structure is arranged between the open-loop circuit conductor cross arm 4 and the straight-through circuit conductor cross arm 5, so that the straight-through circuit conductor can be installed on both sides of the straight-through circuit conductor cross arm 5 through a tension string, and connected by a jumper to form a straight-through circuit, thereby achieving the effect of single-sided open-loop self-crossing 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 circuit 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 open-loop circuit conductor crossarm 4 includes an open-loop upper phase conductor crossarm 41, an open-loop middle phase conductor crossarm 42 and an open-loop lower phase conductor crossarm 43. The open-loop upper phase conductor crossarm 41, the open-loop middle phase conductor crossarm 42 and the open-loop lower phase conductor crossarm 43 are sequentially arranged from top to bottom below the open-loop circuit ground wire crossarm 2 of the common tower body 1.

[0025] The open-loop circuit conductor cross arm 4 is mainly composed of an open-loop circuit upper phase conductor cross arm 41, an open-loop circuit middle phase conductor cross arm 42 and an open-loop circuit lower phase conductor cross arm 43. The open-loop circuit upper phase conductor cross arm 41 is fixedly installed in a 90° T-shape below the open-loop circuit ground wire cross arm 2. The open-loop circuit middle phase conductor cross arm 42 is fixedly installed directly below the open-loop circuit upper phase conductor cross arm 41. There is a certain distance between the open-loop circuit upper phase conductor cross arm 41 and the open-loop circuit middle phase conductor cross arm 42. An open-loop lower phase conductor cross arm 43 is fixedly installed directly below the mid-circuit phase conductor cross arm 42. There is a certain distance between the open-loop mid-circuit phase conductor cross arm 42 and the open-loop lower phase conductor cross arm 43, that is, the open-loop upper phase conductor cross arm 41, the open-loop mid-circuit phase conductor cross arm 42 and the open-loop lower phase conductor cross arm 43 are vertically installed on the common tower body 1 from top to bottom in a 90° T-shape with the open-loop ground wire cross arm 2, so as to better achieve the effect of single-side open-loop self-crossing of the double-circuit transmission line.

[0026] Specifically, the direct loop conductor cross arm 5 includes a direct loop upper phase conductor cross arm 51, a direct loop middle phase conductor cross arm 52 and a direct loop lower phase conductor cross arm 53. The direct loop upper phase conductor cross arm 51, the direct loop middle phase conductor cross arm 52 and the direct loop lower phase conductor cross arm 53 are arranged in sequence from top to bottom below the open-loop lower phase conductor cross arm 43 of the common tower body 1.

[0027] The through loop conductor cross arm 5 is mainly composed of a through loop upper phase conductor cross arm 51, a through loop middle phase conductor cross arm 52 and a through loop lower phase conductor cross arm 53. The through loop upper phase conductor cross arm 51 is fixedly installed below the open loop lower phase conductor cross arm 43 in a 90° T-shape, and there is a certain distance between the through loop upper phase conductor cross arm 51 and the open loop lower phase conductor cross arm 43. A through loop middle phase conductor cross arm 52 is fixedly installed directly below the through loop upper phase conductor cross arm 51. The through loop upper phase conductor cross arm 51 and the through loop middle phase conductor cross arm 43 are fixedly installed below the through loop upper phase conductor cross arm 51. There is a certain distance between the cross arms 52, and a direct-loop lower phase conductor cross arm 53 is fixedly installed directly below the direct-loop middle phase conductor cross arm 52. There is a certain distance between the direct-loop middle phase conductor cross arm 52 and the direct-loop lower phase conductor cross arm 53, that is, the direct-loop upper phase conductor cross arm 51, the direct-loop middle phase conductor cross arm 52 and the direct-loop lower phase conductor cross arm 53 are vertically installed in a 90° T-shape from top to bottom below the open-loop lower phase conductor cross arm 43 of the common tower body 1, so as to better achieve the effect of single-side open-loop self-crossing 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 open-loop conductor crossarm 4 in this embodiment is arranged on both sides, that is, the open-loop conductor crossarm 4 is symmetrically installed on both sides of the common tower body 1, and the straight-through conductor crossarm 5 is arranged on one side, that is, the straight-through conductor crossarm 5 is only installed on one side of the common tower body 1, and not installed on the other side, 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 open-loop conductor crossarm 4 and the straight-through 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-spanning tension tower on the outer side of double-circuit transmission line, characterized by: The utility tower comprises a public tower body (1), an open-loop ground wire cross arm (2), a straight-through loop ground wire cross arm (3), an open-loop conductor cross arm (4) and a straight-through 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 open-loop conductor cross arm (4) and the straight-through 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 public tower body (1), and the straight-through loop ground wire cross arm (3) is arranged on the other side of the public tower body (1). The ground wire is arranged on both sides of the straight-through loop ground wire cross arm (3) through a tension string, the open-loop loop conductor cross arm (4) is arranged in a 90° T-shape below the open-loop loop ground wire cross arm (2), the open-loop loop conductor is opened from the outside of the open-loop loop conductor cross arm (4) and then turned sideways at the end of the open-loop loop conductor cross arm (4) to form an outer open-loop line, the straight-through loop conductor cross arm (5) is arranged in a 90° T-shape below the open-loop loop conductor cross arm (4), the straight-through loop conductor is arranged on both sides of the straight-through loop conductor cross arm (5) through a tension string, and is connected by a jumper.

2. The outer single open-loop self-spanning tension tower of a double-circuit power transmission line according to claim 1, characterized in that: The open loop conductor cross arm (4) comprises an open loop upper phase conductor cross arm (41), an open loop middle phase conductor cross arm (42) and an open loop lower phase conductor cross arm (43), and the open loop upper phase conductor cross arm (41), the open loop middle phase conductor cross arm (42) and the open loop lower phase conductor cross arm (43) are sequentially arranged from top to bottom below the open loop ground wire cross arm (2) of the common tower body (1).

3. The outer single open-loop self-spanning tension tower of a double-circuit power transmission line according to claim 2, characterized in that: The through loop conductor cross arm (5) comprises a through loop upper phase conductor cross arm (51), a through loop middle phase conductor cross arm (52) and a through loop lower phase conductor cross arm (53), wherein the through loop upper phase conductor cross arm (51), the through loop middle phase conductor cross arm (52) and the through loop lower phase conductor cross arm (53) are sequentially arranged from top to bottom below the open loop lower phase conductor cross arm (43) of the common tower body (1).

4. The outer single open-loop self-spanning tension tower of a double-circuit power transmission line 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-spanning tension tower of a double-circuit power transmission line according to claim 1, characterized in that: The open-loop conductor cross arm (4) is arranged on both sides, and the straight-through loop conductor cross arm (5) is arranged on one side.

6. The outer single open-loop self-spanning tension tower of a double-circuit power transmission line according to claim 1, characterized in that: The open loop ground wire cross arm (2), the through loop ground wire cross arm (3), the open loop conductor cross arm (4) and the through loop conductor cross arm (5) all adopt the structure of an ordinary flat cross arm.

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