CN203412350U

CN203412350U - Cut-off power transmission steel pipe rod of double-loop unilateral loop cable manner

Info

Publication number: CN203412350U
Application number: CN201320494889.4U
Authority: CN
Inventors: 刘西民; 汪诚; 葛娜; 王力; 罗正帮; 陈彦焰; 朱晓鹏; 董江戎; 梁东跃; 邹本为; 杨雪锋; 于永洋; 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 discloses a cut-off power transmission steel pipe rod of a double-loop unilateral loop cable manner, and relates to the technical field of high pressure power transmission circuits. The cut-off power transmission steel pipe rod comprises a tower body, a ground wire support, an upper wire cross arm, a middle wire cross arm, a lower wire cross arm, a T connecting upper cross arm, a T connecting middle cross arm, a T connecting lower cross arm, a T connecting bottom cross arm and a T connecting ground wire cross arm, wherein the T connecting upper cross arm, the T connecting middle cross arm, the T connecting lower cross arm, the T connecting bottom cross arm and the T connecting ground wire cross arm are perpendicular to a circuit direction; the T connecting upper cross arm, the T connecting middle cross arm and the T connecting lower cross arm are respectively positioned above the upper wire cross arm, the middle wire cross arm and the lower wire cross arm, and the T connecting bottom cross arm is positioned below the lower wire cross arm; each suspension point of the ground wire support, the upper wire cross arm, the middle wire cross arm and the lower wire cross arm is provided with two strain insulator strings. The cut-off power transmission steel pipe rod disclosed by the utility model has the advantages that the position of a new rod tower is arranged on the center line of an original circuit, an urban road green belt is not occupied, and the new two-base cable terminal rod is also not required.

Description

The transmission of electricity steel pipe pole that the one-sided return cable mode in a kind of double loop is cut-off

Technical field:

The utility model relates to ultra-high-tension power transmission line technical field, relates in particular to the transmission of electricity steel pipe pole that the one-sided return cable mode in a kind of double loop is cut-off.

Background technology:

In ultra-high-tension power transmission line, wire is arranged vertically the one-sided mode of cut-offfing of dual loop transmission line and mainly contains two kinds: a kind of is newly-built 1 base double loop cable terminal pole under the loop of cut-offfing at needs, cross-arm is parallel to line direction to be arranged, one-sided loop opening is become to double loop cabling (referring to Fig. 1); Another kind of mode is: newly-built two base cable terminal poles on the former central lines of track cut-offfing at needs, cross-arm is consistent with former overhead line structures cross-arm arrangement, utilizes a side cross-arm of cable terminal pole that one-sided loop opening is become to double loop cabling (referring to Fig. 2).

The first is cut-off mode, though utilized a 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 cut-offs mode, although can solve the situation of central lines of track in pergola on the city road, shortcoming is: increased by a base double loop cable terminal pole more, increased shaft tower quantity, increased investment.

Utility model content:

The utility model is to provide the transmission of electricity steel pipe pole that the one-sided return cable mode in a kind of double loop is cut-off, it cut-offs by the hanging wire cross-arm of wire and power cable the steel pipe pole that auxiliary cross-arm combines, make the position of newly-built shaft tower on former central lines of track, can not take pergola on the city road, not need newly-built two base cable terminal poles yet.

In order to solve the existing problem of background technology, the present invention 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, T connects cross-arm, T connects middle cross-arm, T connects lower cross-arm, T connects end cross-arm, T grounding wire cross-arm, described T connects cross-arm, T connects middle cross-arm, T connects lower cross-arm, T connects end cross-arm, T grounding wire cross-arm is perpendicular to line direction, wherein T connects cross-arm, T connects middle cross-arm, T connects lower cross-arm and lays respectively at upper conductor cross-arm, middle wire cross-arm, the top of lower wire cross-arm, T connects the below that end cross-arm is positioned at lower wire cross-arm, described earth wire support, upper conductor cross-arm, middle wire cross-arm, each hitch point of lower wire cross-arm is provided with two strain insulator strings.

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

1. solved and cut-off shaft tower the problem that causes limited location system need be installed on the center line of former circuit.

2. save a base double loop cable terminal pole, reduced investment.

Accompanying drawing explanation:

Fig. 1 is the schematic diagram of background technology line disconnection mode 1;

Fig. 2 is the schematic diagram of background technology line disconnection mode 2:

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

Fig. 4 is the right view of Fig. 3;

Fig. 5 is wiring schematic diagram of the present utility model.

Embodiment

With reference to Fig. 3-4, the transmission of electricity steel pipe pole that the one-sided return cable mode in a kind of double loop is cut-off, it comprises tower body 1, earth wire support 2, upper conductor cross-arm 3, middle wire cross-arm 4, lower wire cross-arm 5, T connects cross-arm 6, T connects middle cross-arm 7, T connects lower cross-arm 8, T connects end cross-arm 9, T grounding wire cross-arm 10, described T connects cross-arm 6, T connects middle cross-arm 7, T connects lower cross-arm 8, T connects end cross-arm 9, T grounding wire cross-arm 10 is perpendicular to line direction, wherein T connects cross-arm 6, T connects middle cross-arm 7, T connects lower cross-arm 8 and lays respectively at upper conductor cross-arm 3, middle wire cross-arm 4, the top of lower wire cross-arm 5, T connects the below that end cross-arm 9 is positioned at lower wire cross-arm 5, described earth wire support 2, upper conductor cross-arm 3, middle wire cross-arm 4, each hitch point of lower wire cross-arm 5 is provided with strain insulator string.

Referring to Fig. 3-5, the common shaft tower in the utility model place is parallel to line direction increase T and connects cross-arm, T connects middle cross-arm, T connects lower cross-arm, T connects four layers of cross-arm of end cross-arm, wherein T connects cross-arm, T connects middle cross-arm, T connects lower cross-arm and is separately positioned on upper conductor cross-arm, middle wire cross-arm, the top of lower wire cross-arm, T connects the below that end cross-arm is arranged on lower wire cross-arm, simultaneously at earth wire support, upper conductor cross-arm, middle wire cross-arm, each hitch point of lower wire cross-arm is all installed two strain insulator strings, need cut-off like this circuit receives respectively on two strain insulator strings of wire cross-arm hitch point, then by going between, respectively both sides circuit is caused to both sides T and connect the cable shoe on cross-arm, because wire cross-arm hitch point adopts two strain insulator strings, just need must be cut-off to circuit disconnects, in addition T is connect to lower cross-arm and be separately positioned on upper conductor cross-arm, middle wire cross-arm, the top of lower wire cross-arm, T connects the below that end cross-arm is arranged on lower wire cross-arm, make so every adjacent two T connect cable shoe between cross-arm and beginning circuit on same level line, so the utility model is when being installed on the one-sided loop opening circuit in double loop, the position of newly-built shaft tower is on former central lines of track, can not take pergola on the city road, do not need newly-built two base cable terminal poles yet.

Claims

1. the transmission of electricity steel pipe pole that the one-sided return cable mode in double loop is cut-off, it is characterized in that, it comprises tower body, earth wire support, upper conductor cross-arm, middle wire cross-arm, lower wire cross-arm, T connects cross-arm, T connects middle cross-arm, T connects lower cross-arm, T connects end cross-arm, T grounding wire cross-arm, described T connects cross-arm, T connects middle cross-arm, T connects lower cross-arm, T connects end cross-arm, T grounding wire cross-arm is perpendicular to line direction, wherein T connects cross-arm, T connects middle cross-arm, T connects lower cross-arm and lays respectively at upper conductor cross-arm, middle wire cross-arm, the top of lower wire cross-arm, T connects the below that end cross-arm is positioned at lower wire cross-arm, described earth wire support, upper conductor cross-arm, middle wire cross-arm, each hitch point of lower wire cross-arm is provided with two strain insulator strings.