CN203412349U

CN203412349U - Double-loop unilateral cut-off power transmission circuit rod tower

Info

Publication number: CN203412349U
Application number: CN201320494880.3U
Authority: CN
Inventors: 陈彦焰; 刘西民; 王力; 罗正帮; 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-loop unilateral cut-off power transmission circuit rod tower, and relates to the technical field of high pressure power transmission circuits. The double-loop unilateral cut-off power transmission circuit rod tower comprises a tower body, lap joint cross arms and a cut-off cross arm, wherein the two sides of the tower body are respectively provided with the lap joint cross arms; the lap joint cross arms are parallel to a cut-off circuit, one side, which is close to the cut-off circuit, of the tower body is also provided with the cut-off cross arm, the cut-off cross arm is perpendicular to the cut-off circuit, and the two sides of the cut-off cross arm are connected with strain insulator-strings. According to the double-loop unilateral cut-off power transmission circuit rod tower disclosed by the utility model, the disadvantages that a loop circuit is cut off, two loop circuits are hung to cut off the rod tower, so that the cross arm interval of the rod tower wires is large, the height of the rod tower is increased, the rolled steel consumption amount and the basis quantities are correspondingly increased, and the economy is poor are overcome.

Description

The one-sided electric power line pole tower that cut-offs in a kind of double loop

Technical field:

The utility model relates to ultra-high-tension power transmission line technical field, relates in particular to the one-sided electric power line pole tower that cut-offs in a kind of double loop.

Background technology:

When needs are when to double loop ultra-high-tension power transmission line, wherein cut-off in a loop, the normal scheme adopting is newly-built 1 base double T extension bar tower under former circuit, and this cut-offs the main shortcoming of scheme has:

1) this cut-offs scheme needs newly-built 1 base double T extension bar tower, has increased steel and basic cost, and economy is poor.

2) this cut-offs the double T adopting in scheme to connect tower interlamellar spacing larger, easily causes adjacent tower magnitude of voltage to exceed shaft tower service condition, and electric clearance is caused to adverse effect.

Utility model content:

The purpose of this utility model is to provide the one-sided electric power line pole tower that cut-offs in a kind of double loop, it is meeting under electric clearance condition, avoided for cut-offfing a loop line road, two loop line roads being hung to cut-offfing shaft tower, cause between shaft tower wire cross-arm interlamellar spacing larger, cause the increase of shaft tower overall height, 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, overlaps cross-arm, cut-offs cross-arm, described tower body both sides are respectively arranged with overlap joint cross-arm, overlap joint cross-arm is parallel to and cut-offs circuit, tower body is also provided with and cut-offs cross-arm near cut-offfing circuit one side, cut-off cross-arm perpendicular to cut-offfing circuit, cut-off cross-arm both sides and be connected with strain insulator-string.

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

(1) avoid newly-built 1 base double T extension bar tower, reduced steel and basic use amount, saved construction cost.

(2) having avoided double T to connect tower interlamellar spacing causes adjacent tower electricity value to exceed the problem of shaft tower service condition compared with great Yi.

Accompanying drawing explanation:

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

The specific embodiment:

With reference to Fig. 1, the one-sided electric power line pole tower that cut-offs in a kind of double loop, it comprises tower body 1, overlap joint cross-arm 2, cut-off cross-arm 3, described tower body 1 both sides are respectively arranged with overlap joint cross-arm 2, overlap joint cross-arm 2 is parallel to and cut-offs circuit, tower body 1 is also provided with and cut-offs cross-arm 3 near cut-offfing circuit one side, cut-off cross-arm 3 perpendicular to cut-offfing circuit, cut-off cross-arm 3 both sides and be connected with strain insulator-string 4, when the utility model is installed, first according to the situation of another loop line line conductor windage yaw, guaranteeing under the prerequisite of electric clearance, calculative determination cut-offs the distance of the cheap former central lines of track of tower, then according to adjacent tower vertical span, horizontal span, the adjacent tower load of the situation verifications such as wire tension, guarantee to cut-off rear adjacent tower stressing conditions still in allowed band, at breaking point place, target loop wire is disconnected, and adopt strain insulator-string to hang to cut-offfing cross-arm, by wire jumper, the two loop line roads overlap joints that cut-off formation are completed and cut-off to overlapping cross-arm again.

Claims

1. the one-sided electric power line pole tower that cut-offs in double loop, it is characterized in that, it comprises tower body, overlaps cross-arm, cut-offs cross-arm, described tower body both sides are respectively arranged with overlap joint cross-arm, overlap joint cross-arm is parallel to and cut-offs circuit, tower body is also provided with and cut-offs cross-arm near cut-offfing circuit one side, cut-offs cross-arm perpendicular to cut-offfing circuit, cut-offs cross-arm both sides and is connected with strain insulator-string.