CN215055893U

CN215055893U - Narrow-sideline single-loop strain tower for area with limited sideline distance

Info

Publication number: CN215055893U
Application number: CN202120849387.3U
Authority: CN
Inventors: 张媛; 王学明; 朱梦伟; 袁俊; 石磊; 王绍辉
Original assignee: Northwest Electric Power Design Institute of China Power Engineering Consulting Group
Current assignee: Northwest Electric Power Design Institute of China Power Engineering Consulting Group
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-12-07
Anticipated expiration: 2031-04-23

Abstract

The utility model discloses a narrow sideline single loop strain tower for an area with limited sideline distance, which comprises a tower body, and a ground wire bracket, a jumper wire cross arm and a wire hanging point which are arranged on the same side of the tower body; the ground wire support is arranged at the top of the tower body, and a ground wire hanging point is arranged at the end part of the ground wire support; the jumper cross arm is arranged below the ground wire support and consists of an upper layer of cross arm, a middle layer of cross arm and a lower layer of cross arm, and a jumper hanging point is arranged at the end part of the jumper cross arm; the wire hanging points comprise an upper hanging point, a middle hanging point and a lower hanging point, wherein the upper hanging point and the lower hanging point are respectively arranged on the middle spacing surface of the tower body, which is correspondingly connected with the upper layer jumper cross arm and the lower layer jumper cross arm, and the middle hanging point is arranged at the root of the middle layer jumper cross arm. The utility model discloses can solve the cities and towns suburb area transmission line passageway nervous, single loop strain insulator tower stringing with build the not enough problem of circuit sideline safe distance, furthest's the corridor width that reduces transmission line and occupy.

Description

Narrow-sideline single-loop strain tower for area with limited sideline distance

Technical Field

The utility model belongs to the power equipment field relates to a narrow sideline single loop strain insulator tower that is used for sideline distance limited area.

Background

In recent years, with the vigorous construction and development of power transmission lines, the power transmission lines occupy a large number of corridor passages, and due to the limitation of the line corridors, the power transmission lines need to be laid under the condition that the passages are very crowded, and the power transmission lines need to be crossed with the existing old lines.

The traditional single-loop strain tower is basically a dry-shaped tower, the middle phase jumper wires are convenient to arrange, the experience of design, construction and operation is rich, and the economical efficiency is good. However, the three-phase wires are arranged in a triangular shape, so that the occupied corridor is wide, wiring of the lines from a crowded corridor cannot be met, in order to reduce the corridor as much as possible, a safety distance is guaranteed to be reserved between the three-phase wires and the existing lines, the lines can be smoothly wired, the engineering construction requirements are met, and the narrow-side-line power transmission tower capable of being vertically arranged needs to be designed urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a narrow limit line single loop strain insulator tower that is used for sideline distance limited area, furthest's the corridor width that reduces transmission line and occupy to the nervous of the suburb area transmission line passageway in the town among the above-mentioned prior art, single loop strain insulator tower overhead line and the problem that line sideline safe distance is not enough has been built.

In order to achieve the above object, the present invention provides the following technical solutions:

a narrow-sideline single-loop strain tower for an area with a limited sideline distance comprises a tower body, and a ground wire support, a jumper wire cross arm and a wire hanging point which are arranged on the same side of the tower body; the ground wire support is arranged at the top of the tower body, and a ground wire hanging point is arranged at the end part of the ground wire support; the jumper cross arm is arranged below the ground wire support and consists of an upper layer of cross arm, a middle layer of cross arm and a lower layer of cross arm, and a jumper hanging point is arranged at the end part of the jumper cross arm; the wire hanging points comprise an upper hanging point, a middle hanging point and a lower hanging point, wherein the upper hanging point and the lower hanging point are respectively arranged on the middle spacing surface of the tower body, which is correspondingly connected with the upper layer jumper cross arm and the lower layer jumper cross arm, and the middle hanging point is arranged at the root of the middle layer jumper cross arm.

As an optimal scheme of the utility model, the jumper wire through the jumper wire cross arm is hung the point and can be followed the body of the tower homonymy and hang the three-phase 330kV jumper wire, and every time the wire is arranged perpendicularly.

As an optimized proposal of the utility model, the wire hanging points all adopt double hanging points.

As an optimal scheme of the utility model, ground wire hang between some and the ground wire, the wire hang between some and the wire jumper hang between some and the wire jumper all adopt the bolt to connect through the gold utensil, the bolt that the wire hung the point wears to perpendicular with ground, the bolt that the wire jumper hung the point wears to perpendicular with the wire direction.

As an optimized scheme of the utility model, body of a tower bottom set up the tower leg, ground wire support, wire jumper cross arm, body of a tower and tower leg all adopt hot rolling equi-limb angle steel to make, hot rolling equi-limb angle steel include Q235B, Q355B, Q420B level specification angle steel.

As an optimized proposal of the utility model, the jumper cross arm is connected with the tower body through the steel plate.

As a preferred scheme of the utility model, the cross section of body of the tower is square.

As an optimized proposal of the utility model, the front of the ground wire cross arm is triangular, and the upper and lower planes are rectangular or trapezoidal.

As an optimized scheme of the utility model, the front of upper strata and lower floor's wire jumper cross arm is the triangle-shaped, and upper and lower plane is whole for trapezoidal or rectangle.

As an optimized proposal of the utility model, the front of the middle layer jumper wire cross arm is rectangular, and the upper and lower planes are all trapezoidal or rectangular.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

the utility model discloses the realization is arranged traditional three-phase wire to change into by the triangle and is arranged perpendicularly, has greatly reduced the corridor width of circuit, reduces horizontal line distance, and the circuit corridor who has solved urban planning district and suburb area leads to the problem that can't satisfy minimum safe distance. The utility model provides a distance between this kind of narrow sideline transmission tower line has reduced more than 50% than conventional angle-steel tower, can be fine with city construction development environment coordination. Furthermore, the utility model provides an iron tower structural style is pleasing to the eye, has adopted the perpendicular F type tower of arranging of wire, and the shaft tower is arranged rationally, passes power clearly, has reduced the body investment furthest.

Drawings

FIG. 1 is a schematic structural diagram of a conventional single-circuit strain tower shaped like a Chinese character 'gan';

FIG. 2 is a schematic view of a narrow sideline single loop strain tower structure for use in an area with a limited sideline distance;

in the drawings: 1-a ground wire support; 2-jumper cross arm; 3-wire hanging points; 4-a tower body; 5-tower legs; 2-1, an upper layer wire jumping cross arm; 2-2, middle layer jumper cross arm; 2-3, a lower layer jumper wire cross arm; 3-1, installing a wire hanging point; 3-2, a middle wire hanging point; and 3-3, arranging a wire hanging point.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

The utility model provides a narrow limit line single loop strain insulator tower can be used to hanging of 330kV three-phase wire jumper, and its structure is as shown in figure 2, including body of the tower 4 and set up at body of the tower 4 with the ground wire support 1 of one side, wire jumper cross arm 2 and wire string point 3. Three-phase 330kV jumper wires can be hung on the same side of the tower body through jumper wire hanging points of the jumper wire cross arm 2, and each circuit of the three-phase 330kV jumper wires is vertically arranged.

The ground wire support 1 is arranged at the top of the tower body 4, a ground wire hanging point is arranged at the end part of the ground wire support 1, and a ground wire or an optical cable can be hung on the ground wire hanging point. The jumper wire cross arm 2 is arranged below the ground wire support 1, the jumper wire cross arm 2 is composed of an upper layer cross arm, a middle layer cross arm and a lower layer cross arm, a jumper wire hanging point is arranged at the end of the jumper wire cross arm 2, and the jumper wire hanging point is used for hanging a jumper wire. The wire hanging points 3 comprise an upper hanging point, a middle hanging point and a lower hanging point, wherein the upper wire hanging point 3-1 and the lower wire hanging point 3-3 are respectively arranged on the middle spacing surface of the tower body 4 correspondingly connected with the upper layer jumper cross arm 2-1 and the lower layer jumper cross arm 2-3, and the middle wire hanging point 3-2 is arranged at the root of the middle layer jumper cross arm 2-2. The wire hanging points 3 are double hanging points and are used for hanging wires. The ground wire hanging point and the ground wire, the wire hanging point 3 and the wire jumper hanging point and the wire jumper are connected through hardware fittings, a bolt of the wire hanging point 3 penetrates to be perpendicular to the ground, and a bolt of the wire jumper hanging point penetrates to be perpendicular to the wire direction.

The utility model discloses the bottom of body of the tower 4 sets up tower leg 5, and ground wire support 1, wire jumper cross arm 2, body of the tower 4 and tower leg 5 all adopt limb angle steel such as hot rolling to make, and body of the tower 4 includes four main support angle steel, and limb angle steel such as hot rolling includes Q235B, Q355B, Q420B level specification angle steel. The jumper wire cross arm 2 is connected with the tower body 4 through a steel plate.

The cross section of the tower body 4 of the utility model is square.

The front surface of the ground wire cross arm 2 is triangular, and the upper plane and the lower plane are rectangular or trapezoidal.

The front faces of the upper layer jumper wire cross arm 2 and the lower layer jumper wire cross arm 2 are triangular, and the upper plane and the lower plane are all trapezoidal or rectangular.

The front surface of the middle layer jumper wire cross arm 2 is rectangular, and the upper plane and the lower plane are both trapezoidal or rectangular.

Combine fig. 1, the utility model discloses an in the embodiment, the tower head is high 24.3m, and the maximum horizontal interval of wire is 2m, and according to conventional iron tower design tower head is high 12m, and the maximum horizontal interval of wire is 16m, because the restriction of corridor passageway, the utility model discloses not only the wire horizontal interval that has significantly reduced, still smooth from passing through in crowded corridor passageway, make the engineering can be built smoothly.

To sum up, the utility model provides a narrow limit line single loop strain insulator tower structure compares in dry style of calligraphy single loop strain insulator tower in the past, has that the line space is narrow, simple structure, appearance advantage pleasing to the eye, coordinates more with urban environment. The utility model discloses narrow sideline power transmission tower's application can be fine solution transmission of electricity passageway corridor the not enough problem of safe distance that leads to.

The above description of the present invention is provided for the purpose of illustration and description, and it is not to be construed as a limitation on the scope of the present invention, but rather as a limitation on the scope of the invention, it is to be understood that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a narrow sideline single loop strain insulator tower that is used for sideline distance limited area which characterized in that: comprises a tower body (4), and a ground wire bracket (1), a jumper cross arm (2) and a wire hanging point (3) which are arranged on the same side of the tower body (4); the ground wire support (1) is arranged at the top of the tower body (4), and a ground wire hanging point is arranged at the end part of the ground wire support (1); the jumper cross arm (2) is arranged below the ground wire support (1), the jumper cross arm (2) consists of an upper layer of cross arm, a middle layer of cross arm and a lower layer of cross arm, and a jumper hanging point is arranged at the end part of the jumper cross arm (2); the wire hanging points (3) comprise an upper hanging point, a middle hanging point and a lower hanging point, wherein the upper wire hanging point (3-1) and the lower wire hanging point (3-3) are respectively arranged on the middle spacing surface of the tower body (4) correspondingly connected with the upper layer jumper cross arm (2-1) and the lower layer jumper cross arm (2-3), and the middle wire hanging point (3-2) is arranged at the root of the middle layer jumper cross arm (2-2).

2. The narrow sideline single loop strain tower for use in sideline distance limited areas of claim 1, wherein: three-phase 330kV jumper wires can be hung on the same side of the tower body through jumper wire hanging points of the jumper wire cross arm (2), and each circuit of the wires is vertically arranged.

3. The narrow sideline single loop strain tower for use in sideline distance limited areas of claim 1, wherein:

the wire hanging points (3) are double hanging points.

4. The narrow sideline single loop strain tower for use in sideline distance limited areas of claim 1, wherein:

the ground wire hanging points and the ground wire, the wire hanging points (3) and the wire jumper hanging points and the wire jumper are all connected through hardware fittings by bolts, the bolts of the wire hanging points (3) penetrate to be vertical to the ground, and the bolts of the wire jumper hanging points penetrate to be vertical to the wire direction.

5. The narrow sideline single loop strain tower for use in sideline distance limited areas of claim 1, wherein: the tower is characterized in that tower legs (5) are arranged at the bottom of the tower body (4), the ground wire support (1), the jumper cross arm (2), the tower body (4) and the tower legs (5) are all made of hot-rolled equal-limb angle steel, and the hot-rolled equal-limb angle steel comprises Q235B, Q355B and Q420B-grade specification angle steel.

6. The narrow sideline single loop strain tower for use in sideline distance limited areas of claim 5, wherein:

the jumper wire cross arms (2) are connected with the tower body (4) through steel plates.

7. The narrow sideline single loop strain tower for use in sideline distance limited areas of claim 5, wherein:

the cross section of the tower body (4) is square.

8. The narrow sideline single loop strain tower for use in sideline distance limited areas of claim 5, wherein:

the front surface of the ground wire cross arm (2) is triangular, and the upper plane and the lower plane are rectangular or trapezoidal.

9. The narrow sideline single loop strain tower for use in sideline distance limited areas of claim 5, wherein:

the front faces of the upper layer jumper wire cross arm (2) and the lower layer jumper wire cross arm (2) are triangular, and the upper plane and the lower plane are all trapezoidal or rectangular.

10. The narrow sideline single loop strain tower for use in sideline distance limited areas of claim 5, wherein:

the front surface of the middle layer jumper cross arm (2) is rectangular, and the upper plane and the lower plane are all trapezoidal or rectangular.