CN203412348U

CN203412348U - Double-circuit single circuit cutoff power transmission steel pipe pole in Y-shaped cross arm arrangement

Info

Publication number: CN203412348U
Application number: CN201320494778.3U
Authority: CN
Inventors: 王力; 罗正帮; 刘西民; 陈彦焰; 胡祖伟; 于永洋; 郑少将; 梁东跃; 朱晓鹏; 董江戎; 邹本为; 杨雪锋; 肖俊俊
Original assignee: Anhui Huadian Engineering Consulting and Design Co Ltd
Current assignee: Anhui Huadian Engineering Consulting and Design Co Ltd
Priority date: 2013-08-06
Filing date: 2013-08-06
Publication date: 2014-01-29
Anticipated expiration: 2023-08-06

Abstract

The utility model discloses a double-circuit single circuit cutoff power transmission steel pipe pole in a Y-shaped cross arm arrangement, and relates to the technical field of high-voltage power transmission lines. The double-circuit single circuit cutoff power transmission steel pipe pole comprises a pole body, a guide wire cross arm and cutoff cross arms, wherein the guide wire cross arm is arranged on side of a tower body and is vertical to the line direction; the other side of the tower body is provided with two groups of cutoff cross arms; an included angle between the two groups of cutoff cross arms is of 90 degrees; the guide cross arm and two groups of cutoff cross arms are in the Y-shaped arrangement. Through the double-circuit single circuit cutoff power transmission steel pipe pole in the Y-shaped cross arm arrangement, the problem that the position of a cutoff pole tower is limited on the central line of an original line; a 1-based double-circuit strain power pole is omitted; the engineering investment is reduced; the cutoff side span length is increased; the utilization rate of the using conditions of a pole tower is improved, so that the engineering investment is lowered.

Description

The one-sided loop opening transmission of electricity in the double loop steel pipe pole that a kind of Y shape cross-arm is arranged

Technical field:

The utility model relates to ultra-high-tension power transmission line technical field, relates in particular to the one-sided loop opening transmission of electricity in a kind of double loop steel pipe pole.

Background technology:

In ultra-high-tension power transmission line, the one-sided mode of cut-offfing of the vertically arranged dual loop transmission line of wire mainly contains four kinds: the first is newly-built 1 base double loop tension-resistant rod under the loop of cut-offfing at needs, cross-arm is parallel to line direction to be arranged, will after one-sided loop opening, form double loop cabling; The second way is: at needs, cut-off newly-built 2 base tension-resistant rods on central lines of track, cross-arm is consistent with former overhead line structures cross-arm arrangement, utilizes a side cross-arm of tension-resistant rod that one-sided loop opening is become to double loop cabling; The third mode is: newly-built 1 base tension-resistant rod below the circuit cut-offfing at needs, the cross-arm that cut-offs side loop is made to T font, and wire and ground wire are all hung over to the both sides of T font cross-arm, this side loop is cut-off, form double loop cabling; The 4th kind of mode is: at the newly-built 1 base tension-resistant rod of line disconnection loop side, cross-arm is " T " font and arranges, " T " font cross-arm vertical line trackside cross-arm is arranged in and is cut-off under loop, lead wire and earth wire is fixed on cross-arm by hanging wire gold utensil, utilize the cross-arm of parallel circuit, former line conductor, with being fixed on cross-arm of jumper, has been completed to the one-sided scheme of cut-offfing in double loop, but these schemes all have some shortcomings, and concrete condition is as follows:

First kind of way, though utilized 1 base steel pipe pole just to complete the one-sided requirement of cut-offfing in double loop, when cut-offfing overhead line structures limited location, for example: central lines of track need be along in pergola on the city road (general width < 2m) during cabling, the position of newly-built shaft tower, not on former central lines of track, cannot meet the demands.

The second way, this scheme can solve cut-offs the not problem on former central lines of track of overhead line structures, but has increased by 1 base double loop tension-resistant rod, has increased shaft tower weight, has increased investment.

The third mode, puts owing to cut-offfing the landing tee of side cross arm of tower, from cross-arm structure stress angle, considers, cut-off side lead wire and earth wire tension force limited, the span that cut-offs side is too small, and causing cut-offfing overhead line structures quantity increases, and increases line construction investment.

The 4th kind of mode, cannot solve central lines of track cabling in pergola on the city road, does not allow the situation of newly-built shaft tower outside greenbelt.

Utility model content:

The utility model has been to provide the one-sided loop opening transmission of electricity in the double loop steel pipe pole that a kind of Y shape cross-arm is arranged, its wire cross-arm with cut-off the Y-shaped layout of cross-arm, utilize strain insulator string wire to be fixed on wire cross-arm not needing to cut-off circuit, arrange two groups of cross-arms that are 90 degree need to cut-off loop side, utilize strain insulator string respectively wire is fixed on both sides cut-off cross-arm hanging point place, thereby complete on 1 base steel pipe pole, the one-sided loop of double-circuit line is cut-off in the mode of cable.

In order to solve the existing problem of background technology, the utility model is by the following technical solutions: it comprises shaft, wire cross-arm, cut-offs cross-arm, wire cross-arm is arranged on tower body one side and perpendicular to line direction, at opposite side, be provided with two groups and cut-off cross-arm, two groups of cross-arm angles are 90 °, and wire cross-arm and two groups cut-off cross-arm and form " Y " font.

The utility model and conventional anchor support T connect and draw lower tower and compare and have the following advantages:

Solved cut-off shaft tower need be on the center line of former circuit the restricted problem in position, saved 1 base double loop tension-resistant rod, reduced construction investment, increased and cut-off side span length, improved shaft tower service condition utilization rate, reduced construction investment.

Accompanying drawing explanation:

Fig. 1 is structural representation of the present utility model.

specificallyembodiment:

With reference to Fig. 1, the one-sided loop opening transmission of electricity in the double loop steel pipe pole that a kind of Y shape cross-arm is arranged, it comprises shaft 1, wire cross-arm 2, cut-off cross-arm 3, wire cross-arm 2 is arranged on tower body 1 one sides and perpendicular to line direction, at opposite side, be provided with two groups and cut-off cross-arm 3, two groups of cross-arm 3 angles are 90 °, wire cross-arm 2 and two groups cut-off cross-arm 3 and form " Y " fonts, do not need the circuit cut-offfing to be fixed on the both sides strain insulator string of wire cross-arm, need cut-off circuit and be separately fixed at cut-offfing on cross-arm strain insulator string of both sides, with wire jumper, be connected with it simultaneously and complete that double loop is one-sided cut-offs, so both can make to cut-off overhead line structures on former central lines of track, cut-off side span moderate length, only need a beginning tower to complete.

Claims

1. the one-sided loop opening transmission of electricity in the double loop steel pipe pole that a Y shape cross-arm is arranged, it is characterized in that, it comprises shaft, wire cross-arm, cut-offs cross-arm, wire cross-arm is arranged on tower body one side and perpendicular to line direction, at opposite side, be provided with two groups and cut-off cross-arm, two groups of cross-arm angles are 90 °, and wire cross-arm and two groups cut-off cross-arm and form " Y " font.