CN203412346U

CN203412346U - Novel single circuit breaking pole tower

Info

Publication number: CN203412346U
Application number: CN201320494878.6U
Authority: CN
Inventors: 刘震; 王力; 罗正帮; 刘西民; 周转; 陈彦焰; 梁东跃; 邹本为; 朱晓鹏; 董江戎; 于永洋; 葛娜; 夏威
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 provides a novel single circuit breaking pole tower and relates to the technical field of high voltage transmission lines. The novel single circuit breaking pole tower comprises a tower body, a ground wire support, an upper wire cross arm, a middle wire cross arm, a lower wire cross arm, a ground wire cross arm and a wire cross arm, wherein the ground wire support, the upper wire cross arm, the middle wire cross arm and the lower wire cross arm are vertical to a circuit direction, the ground wire cross arm and the wire cross arm are parallel to the circuit direction, the ground wire cross arm is arranged below the ground wire support, and the wire cross arm is arranged below the lower wire cross arm. The novel single circuit breaking pole tower solves the problem that a single-circuit target circuit is broken while stress and electric clearance conditions of a pole tower are met, and the defects that a single circuit wire contracts inward, the electric clearance can not meet the requirement, steel consumption and foundation work amount are correspondingly increased and economical performance is poor are overcome.

Description

A kind of novel single loop cut-offs shaft tower

Technical field:

The utility model relates to ultra-high-tension power transmission line technical field, relates in particular to a kind of novel single loop and cut-offs shaft tower.

Background technology:

Existing ultra-high-tension power transmission line single loop target line shaft tower, when needs cut-off, often adopts a base double loop branch tower and two base single loop anchor supports (hereinafter to be referred as " routine is cut-off scheme one "); Or only adopt a base double loop anchor support (hereinafter to be referred as " routine is cut-off scheme two ") to cut-off former circuit, but above-mentioned 2 kinds are cut-off the main shortcoming of scheme and have:

1) though routine is cut-off former single loop tangent tower that scheme one can meet breaking point both sides or the electric clearance of anchor support, and this cut-offs scheme and need use shaft tower more, construction investment is larger;

2), though to cut-off scheme two construction investments less, there is the possibility that can not meet the requirement of former single loop shaft tower electric clearance.

Utility model content:

The purpose of this utility model is to provide a kind of novel single loop and cut-offs shaft tower, it adopts double loop anchor support, guarantor, meet under the condition of the stressed and electric clearance of shaft tower, solve single time target line and cut-off problem, solve receipts in single loop wire simultaneously, caused electric clearance not meet the demands, the increase corresponding to Foundation Design amount of steel consumption, the shortcoming that economy is poor.

In order to solve the existing problem of background technology, the utility model is by the following technical solutions: it comprises tower body, earth wire support, upper conductor cross-arm, middle wire cross-arm, lower wire cross-arm, ground wire cross-arm, wire cross-arm, described earth wire support, upper conductor cross-arm, middle wire cross-arm, lower wire cross-arm are perpendicular to line direction, ground wire cross-arm, wire cross-arm are parallel to line direction, ground wire cross-arm is arranged on the below of earth wire support, and wire cross-arm is arranged on the below of lower wire cross-arm.

The utility model and routine are cut-off scheme and are compared and have the following advantages:

(1) cut-offfing scheme one with routine compares, reduce newly-built shaft tower quantity and reduced tower service condition, a former base double loop branch tower can adopt tangent tower or low-angle angle tower to replace according to on-site actual situations, former two base single loop anchor supports can utilize the utility model to replace, thereby have saved construction investment.

(2) cut-offfing scheme two with routine compares, although tower head size constancy, on only cut-offfing the basis of tower in a base double loop, increase one deck ground wire cross-arm and a layer conductor cross-arm, thereby make to cut-off rear single back line wire and still keep triangular arrangement, cut-off tower both sides adjacent straight transmission tower wire suspension string and keep vertical state, can make the tower head electric clearance of the built shaft tower of former circuit meet rules requirement, after avoiding utilizing conventional double loop to cut-off tower cut-offfing, routine is cut-off adjacent straight transmission tower limit, tower both sides phase conductor suspension string to tower body lateral deviation shifting state.

The utility model is meeting under electric clearance condition, use the guiding of wire jumper self-conductance wire-wound logical, effectively solved and cut-off the poor shortcoming of steel consumption increase economy corresponding to Foundation Design amount that angle of wind deflection after causing that shaft tower wire list is two and converting and electric clearance problem or the increase of shaft tower quantity cause for single loop.

Accompanying drawing explanation

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

Fig. 2 is the right view of Fig. 1;

Fig. 3 is wiring schematic diagram of the present utility model.

The specific embodiment:

Referring to Fig. 1-3, a kind of novel single loop cut-offs shaft tower, it comprises tower body 1, earth wire support 2, upper conductor cross-arm 3, middle wire cross-arm 4, lower wire cross-arm 5, ground wire cross-arm 6, wire cross-arm 7, described earth wire support 2, upper conductor cross-arm 3, middle wire cross-arm 4, lower wire cross-arm 5 are perpendicular to line direction, ground wire cross-arm 6, wire cross-arm 7 are parallel to line direction, ground wire cross-arm 6 is arranged on the below of earth wire support 2, and wire cross-arm 7 is arranged on the below of lower wire cross-arm 5.

Three-phase conducting wire on single loop target line shaft tower and ground wire are received respectively on the upper, middle and lower wire cross-arm and earth wire support on the utility model, wherein, lower two phase conductors are connected to form by the wire on the strain insulator-string at wire jumper and wire cross-arm two ends and cut-off, also by wire jumper, the wire directly and on the strain insulator-string at upper conductor cross-arm two ends is connected to form and cut-offs upper phase conductor, and ground wire is connected to form and is cut-off by the wire on the strain insulator-string at wire jumper and ground wire cross-arm two ends.

The utility model tower adopts double loop anchor support arrangement, insulator string on upper, middle and lower wire cross-arm adopts " I " string mode, stressed identical with conventional branch tower, thereby avoid loaded down with trivial details processing setting-out, improved Tower processing quality and shortened the process-cycle, again by increasing ground wire cross-arm and wire cross-arm, reduce by two base single loop anchor supports, saving construction cost on the whole, the loading condition of the utility model shaft tower is with basic identical with the double loop branch tower of condition, be subject to the wind load of horizontal direction, longitudinal load is mainly derived from lead wire and earth wire Longitudinal Wind load, in accident when broken string, is along line direction tension force, stringing tension force during installation, vertical load is from lead wire and earth wire, gold utensil, ice load and shaft tower deadweight, maintainer and instrument gravity.

The utility model adopts double loop anchor support, meeting under the condition of the stressed and electric clearance of shaft tower, solve single time target line and cut-off problem, solve receipts in single loop wire simultaneously, caused electric clearance not meet the demands, the increase corresponding to Foundation Design amount of steel consumption, the shortcoming that economy is poor.

Claims

1. a novel single loop cut-offs shaft tower, it is characterized in that, it comprises tower body, earth wire support, upper conductor cross-arm, middle wire cross-arm, lower wire cross-arm, ground wire cross-arm, wire cross-arm, described earth wire support, upper conductor cross-arm, middle wire cross-arm, lower wire cross-arm are perpendicular to line direction, ground wire cross-arm, wire cross-arm are parallel to line direction, ground wire cross-arm is arranged on the below of earth wire support, and wire cross-arm is arranged on the below of lower wire cross-arm.