CN212957919U

CN212957919U - Be suitable for and be greater than single-column type strain insulator tower of 90 corners

Info

Publication number: CN212957919U
Application number: CN202021484467.5U
Authority: CN
Inventors: 石强; 林洋; 陈旭; 何珠岭; 蓝天驰; 康喜明
Original assignee: Construction Branch Of State Grid Inner Mongolia Eastern Power Co ltd; State Grid Corp of China SGCC
Current assignee: Construction Branch Of State Grid Inner Mongolia Eastern Power Co ltd; State Grid Corp of China SGCC
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-04-13
Anticipated expiration: 2030-07-24

Abstract

The utility model discloses a be suitable for and be greater than single-column type strain insulator tower of 90 corners, include tower leg, body of the tower, ground wire support, go up wire cross arm, well wire cross arm and lower wire cross arm, the body of the tower is connected with the tower leg, the ground wire support sets up the tower head top at the body of the tower, go up wire cross arm, well wire cross arm, lower wire cross arm top-down set gradually in the tower head lower part, and lie in same one side of body of the tower. The utility model discloses the body of the tower is pressed close to ground wire support, the wire cross arm of strain insulator tower, and the appearance is close to single post, has shortened the length of ground wire support, wire cross arm, has cancelled the wire jumper and has hung the point, has practiced thrift the tower weight, only adopts a strain insulator tower just to realize tin allies 500kV circuit corridor crowded area corner and is greater than 90 circuit steering arrangement, and area is little, and the consumptive material is little, and the cost of manufacture is low.

Description

Be suitable for and be greater than single-column type strain insulator tower of 90 corners

Technical Field

The utility model relates to a strain insulator tower, concretely relates to be suitable for tin ally oneself with area and be greater than single column type strain insulator tower of 90 corners.

Background

The single circuit of the 500kV power transmission line is common and is applied more, but with the development of economy, a line corridor is increasingly tense, the line corridor can be in a very crowded area inevitably, the number of line corner degrees of partial sections is more than 90 degrees, the conventional design method adopts two power transmission line strain towers with the angle of less than 90 degrees to realize line turning, the occupied area is large, the material consumption is large, and the investment is high.

The Chinese patent with the publication number of 210768060U discloses a 'dry' type conversion strain tower of a 500kV single-circuit compact line, which comprises a tower head and a tower body, wherein the whole strain tower with a wire cross arm is of a 'dry' type structure, the tower head is of an I-shaped structure, a wire hanging point, a ground wire hanging point and a jumper wire hanging point are arranged on the tower head, the wire hanging point is arranged at the bottom and the middle part of the tower head, the ground wire hanging point is arranged at the top of the tower head, and the jumper wire hanging point is arranged at the top and the bottom of the tower head. The utility model discloses a can solve the problem of the alternate electric clearance of wire when 500kV single-circuit compact line links up with conventional single-circuit line, it facilitates to use single-circuit compact line scheme in a flexible way in crowded district of local circuit corridor, has great economic benefits. However, the wire cross arms are arranged on the left side and the right side of the tower body, the structure is not compact, the tower weight is not saved, and the wire cross arms are only suitable for line steering arrangement with the rotation angle smaller than 90 degrees.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a be suitable for being greater than 90 exclusive column type strain insulator tower of corner is fit for tin union area 500kV circuit corridor crowded area corner and is greater than 90 the circuit of turning to arranging.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a single-column strain tower applicable to corners larger than 90 degrees comprises tower legs, a tower body, a ground wire support, an upper lead cross arm, a middle lead cross arm and a lower lead cross arm, wherein the tower body is connected with the tower legs, the ground wire support is arranged at the top of a tower head of the tower body, the upper lead cross arm, the middle lead cross arm and the lower lead cross arm are sequentially arranged at the lower part of the tower head from top to bottom and are positioned at the same side of the tower body, the distance from a ground wire hanging point of the ground wire support to a center line of the tower body is 1.8-2.2m, the distance from a lead hanging point of the upper lead cross arm to the center line of the tower body is 2.5-3m, the distance from a lead hanging point of the middle lead cross arm to the center line of the tower body is 3-3.5m, and the distance from a lead hanging point of the lower lead cross arm to the center line of the tower body is.

Preferably, the main material of the tower legs, the tower body, the ground wire support, the upper wire cross arm, the middle wire cross arm and the lower wire cross arm is Q420 high-strength steel, and the oblique material is Q345 or Q235 angle steel.

Preferably, the upper surface of the ground wire support is vertically spaced 6-8m from the lower surface of the upper wire cross arm.

Preferably, the vertical distance of the lower planes of the upper wire cross arm, the middle wire cross arm and the lower wire cross arm is 9-13 m.

Preferably, the distance from the ground wire hanging point of the ground wire support to the central line of the tower body is 2m, the distance from the wire hanging point of the upper wire cross arm to the central line of the tower body is 2.7m, the distance from the wire hanging point of the middle wire cross arm to the central line of the tower body is 3.2m, and the distance from the wire hanging point of the lower wire cross arm to the central line of the tower body is 3.7 m.

The utility model discloses an actively beneficial effect:

1. the utility model discloses the body of the tower is pressed close to the ground wire support of strain insulator tower, wire cross arm, the appearance is close to single post, compact structure has shortened the length of ground wire support, wire cross arm, the ground wire is hung and is established on the ground wire support, every layer of cross arm horizontal distribution is hung and is established a looks wire, the wire jumper has been cancelled and has been hung the point, the tower weight has been practiced thrift, only adopt a strain insulator tower just can realize tin ally allies 500kV circuit corridor crowded area corner and be greater than 90 the circuit steering arrangement, area is little, the consumptive material is little, the cost of manufacture is low.

2. The utility model discloses tower leg, body of the tower, ground wire support, go up wire cross arm, well wire cross arm, lower wire cross arm material have effectively reduced the tower weight, and node, hanging point simple structure, atress are clear.

Drawings

FIG. 1 is a schematic structural view of a single-column strain tower applicable to a corner of more than 90 degrees according to the present invention;

in the figure: 1-tower leg, 2-tower body, 3-ground wire support, 4-upper wire cross arm, 5-middle wire cross arm and 6-lower wire cross arm.

Detailed Description

The invention will be further described with reference to some specific embodiments.

Example 1

Referring to fig. 1, a be suitable for column type strain insulator tower that is greater than 90 corners, includes tower leg 1, body of the tower 2, ground wire support 3, goes up wire cross arm 4, well wire cross arm 5 and lower wire cross arm 6, body of the tower 2 and tower leg 1 fixed connection, and ground wire support 3 sets up at the tower head top of body of the tower 2, goes up wire cross arm 4, well wire cross arm 5, lower wire cross arm 6 and sets gradually in the tower head lower part from top to bottom, and lies in same one side of body of the tower 2.

The main materials of the tower legs 1, the tower body 2, the ground wire support 3, the upper lead cross arm 4, the middle lead cross arm 5 and the lower lead cross arm 6 are Q420 high-strength steel, and the oblique materials are Q345 or Q235 angle steel.

The upper surface of the ground support 3 is at a vertical distance 7m from the lower side of the upper wire cross arm 4.

The vertical distance of the lower planes of the upper wire cross arm 4, the middle wire cross arm 5 and the lower wire cross arm 6 is 11 m.

The distance from the ground wire hanging point of the ground wire support 3 to the central line of the tower body is 2m, the distance from the wire hanging point of the upper wire cross arm 4 to the central line of the tower body is 2.7m, the distance from the wire hanging point of the middle wire cross arm 5 to the central line of the tower body is 3.2m, and the distance from the wire hanging point of the lower wire cross arm 6 to the central line of the tower body is 3.7 m.

The utility model discloses strain insulator tower is applied to tin ally area 500kV circuit corridor crowded area and is greater than 90 lines and turns to arranging, height 56m, tower leg width 9.14m, the position width that the body of the tower is connected with lower wire cross arm is 3.4m, top of the tower width 2m (with ground wire leg joint's position), be applicable to and be greater than 90 corners, the wire adopts 4X JL/G1A-630/45 steel-cored aluminum strand wires, the ground wire adopts and adopts JLB20A-150 aluminium-clad steel strand wires, basic wind speed 29m/s, cover ice 10 mm.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The single-column strain tower applicable to the corner larger than 90 degrees is characterized by comprising tower legs, a tower body, a ground wire support, an upper lead cross arm, a middle lead cross arm and a lower lead cross arm, wherein the tower body is connected with the tower legs, the ground wire support is arranged at the top of a tower head of the tower body, the upper lead cross arm, the middle lead cross arm and the lower lead cross arm are sequentially arranged at the lower part of the tower head from top to bottom and are positioned at the same side of the tower body, the distance from a ground wire hanging point of the ground wire support to a central line of the tower body is 1.8-2.2m, the distance from a lead hanging point of the upper lead cross arm to the central line of the tower body is 2.5-3m, the distance from a lead hanging point of the middle lead cross arm to the central line of the tower body is 3-3.5m, and the distance from a lead hanging point of the lower lead cross arm to the central line of the tower body is.

2. The single-column tension tower applicable to corners larger than 90 degrees of the claim 1, wherein the main material of the tower legs, the tower body, the ground wire support, the upper wire cross arm, the middle wire cross arm and the lower wire cross arm is Q420 high-strength steel, and the diagonal material is Q345 or Q235 angle steel.

3. The tension tower of claim 1, wherein the vertical distance between the upper surface of the ground wire support and the lower surface of the upper wire cross arm is 6-8 m.

4. The tension tower of claim 1, wherein the vertical distance between the lower planes of the upper wire cross arm, the middle wire cross arm and the lower wire cross arm is 9-13 m.

5. The mono-column type tension tower suitable for the corner larger than 90 degrees according to claim 1, wherein the distance between the ground wire hanging point of the ground wire bracket and the central line of the tower body is 2m, the distance between the wire hanging point of the upper wire cross arm and the central line of the tower body is 2.7m, the distance between the wire hanging point of the middle wire cross arm and the central line of the tower body is 3.2m, and the distance between the wire hanging point of the lower wire cross arm and the central line of the tower body is 3.7 m.