CN2713704Y

CN2713704Y - Four circuit steel tube rod for electric power transmission lines

Info

Publication number: CN2713704Y
Application number: CN 200420027567
Authority: CN
Inventors: 潘曙冰; 张颖璐; 周华
Original assignee: Changzhou Power Supply Co of Jiangsu Electric Power Co
Current assignee: Changzhou Power Supply Co of Jiangsu Electric Power Co
Priority date: 2004-05-26
Filing date: 2004-05-26
Publication date: 2005-07-27
Anticipated expiration: 2014-05-26

Abstract

A four circuit steel tube rod for electric power transmission lines can reduce the corridor width of a transmission line, reduce cost, save urban land, and satisfy operating requirements. The utility model comprises more than two polygonal taper steel tubes which are inserted in each other in sequence and conductor cross arms fixedly connected to the steel tubes; ground wire cross arms are arranged on the tops of the steel tubes, a connecting flange is arranged on the bottom of the steel tube in the lowest part, five layers of conductor cross arms are connected to the upper part of the steel tube, the upper three layers of conductor cross arms are arranged at equal intervals, and insulator chains connected with a double loop transmission line are hung on both ends of the three conductor cross arms; insulator chains connected with another double loop transmission line are hung on both ends of the lower two layers of conductor cross arms and the middle part of the lower conductor cross arm of the two lower conductor cross arms, the lower cross arm is over two times as long as the upper cross arm, and a safety distance >=6000 mm is arranged between the lower conductor cross arm of the upper layer and the upper conductor cross arm of the lower layer. The utility model has obvious advantages that the utility model can relax the conflict between the construction of electric power lines and the development of local economy and make use of line corridor resources reasonably, etc.

Description

Electric power transmission line four loop steel pipe poles

Technical field

The utility model relates to a kind of electric power transmission line steel pipe pole, especially relates to a kind of steel pipe pole that can set up four loop transmission lines.

Background technology

Usually 220kV double loop and 110kV dual loop transmission line adopt the angle steel pylon to establish, but because angle steel tower area occupied is big, and power circuit width of corridor broad and can not be applicable to the city.In urban distribution network is built, for reducing floor space, dwindle the power circuit width of corridor at present, it is attractive in appearance to increase the city, adopts steel pipe pole to erect power transmission lines more.But for 220kV double loop and 110kV dual loop transmission line, a kind of is to adopt two groups of two steel pipe poles respectively 220kV double loop and 110kV dual loop transmission line to be set up, the steel pipe pole floor space is more half as large than angle steel tower, but the cost height, has the problem of power circuit width of corridor broad equally.Another kind is to adopt two groups of steel pipe single poles to come respectively 220kV double loop and 110kV double loop to be erected power transmission lines, though floor space can further reduce, the width minimum in four transmission line corridors also will be about 32 meters.Continuous development and expansion along with city size, the power circuit corridor be subjected to building and city the restriction of supporting facility, the growing tension of urban land in addition, the problem of therefore setting up the power circuit width of corridor that four transmission lines can not fine solution city dwindle day by day with two groups of steel pipe poles.

Summary of the invention

The purpose of this utility model provides a kind ofly can further dwindle the transmission line width of corridor, reduces cost, and saves urban land, satisfies the electric power transmission line four loop steel pipe poles of instructions for use.

The utility model is that the technical scheme that achieves the above object is: a kind of electric power transmission line four loop steel pipe poles, comprise above polygon conical steel pipe of pegging graft successively mutually of two joints and the lead cross-arm that is fixedly connected on the steel pipe, the top of steel pipe is provided with the ground wire cross-arm of lightning-arrest usefulness, the steel pipe bottom of foot is provided with adpting flange, a, five layers of top that is connected steel pipe of described lead cross-arm, last three layers upper, middle and lower lead cross-arm equidistantly is provided with, and two ends are hung with the insulator string that is connected with dual loop transmission line; B, following two layers upper and lower lead cross-arm two ends and lower wire cross-arm middle part are hung with the insulator string that is connected with another dual loop transmission line, and its time cross-arm length is last cross-arm more than two times, is used to hang two phase conductors; The lower wire cross-arm on c, upper strata and the upper conductor cross-arm of lower floor be provided with 〉=safe distance of 6000mm.

The utility model is fixedly connected five layer conductor cross-arms on the single-column steel pipe pole, the lead cross-arm of wherein going up three layers vertically sets up the 220kV dual loop transmission line by the insulator string that hangs, and following two layers lead cross-arm also sets up the 110kV dual loop transmission line by the insulator string triangle that hangs, therefore can make 12 leads straggly in order, guarantee safe distance at interval between the aerial condutor.The utility model is owing to adopt the single-column steel pipe pole, can not only further reduce floor space, and four transmission lines have been realized joint using, reasonably use steel, reduce cost, the transmission line width of corridor can be contracted to about 14 meters simultaneously, saves urban land, solved the problem of the power circuit width of corridor that the city dwindles day by day, especially had remarkable economic efficiency and a social benefit in the developed area.

Description of drawings

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Fig. 1 is one of straight line pole structural representation of the present utility model.

Fig. 2 is the structural representation of Fig. 1 when erecting power transmission lines.

Fig. 3 is two of a strain insulator angle pole structural representation of the present utility model.

Fig. 4 is the structural representation of Fig. 3 when erecting power transmission lines.

Embodiment

See to be the steel pipe pole that sets up 220kV double loop and 110kV dual loop transmission line shown in Fig. 1,3; steel pipe pole comprises above polygon conical steel pipe of pegging graft successively mutually 1 of two joints and the lead cross-arm that is fixedly connected on the steel pipe 1; be provided with the ground wire cross-arm 4 of lightning-arrest usefulness at the top of steel pipe 1; ground wire cross-arm 4 long 2600mm; to wire-protecting angle, both sides 15 degree, improve the fail safe of operation.

See shown in Fig. 1,2, it is linear structure steel pipe pole of the present utility model, steel pipe 1 cross section is positive twelve edge type, be welded into tapered steel pipe by 5 sections backfins and be socketed to form, the socket degree of depth is got 1.5 times, and steel pipe combination back overall height is no more than 45 meters, whole tapering 1/50, the top diameter 360mm of steel pipe 1, base diameter are at 1260mm, and the bottom is provided with adpting flange and is connected with the basis.Five layers of top that is connected steel pipe 1 of lead cross-arm.Last three layers 220kV circuit, upper, middle and lower lead cross-arm 2-1,2-2,2-3 equidistantly are provided with, the lead minimum perpendicular distance is at 5500mm, upper and lower lead cross-arm 2-1, the long only 3600mm of 2-3, the middle long only 4400mm of lead cross-arm 2-2, two ends hang suspension insulator 3, are conventional drum type layout and set up the 220kV double loop.And following two layers 110kV circuit, the length of upper conductor cross-arm 2-4 is at 2800mm, length 〉=5900mm of lower wire cross-arm 2-5, be more than two times of upper conductor cross-arm 2-4, in the lower floor, lower wire cross-arm 2-4, lead minimum perpendicular distance between the 2-5 is at 3500mm, the horizontal spacing of two phase conductors also can be at 3600mm, the home record lead is to steel pipe clear distance 2300mm, on, lower wire cross-arm 2-4, the place hangs suspension insulator 3 in the middle of 2-5 two ends and the lower wire cross-arm 2-5, be triangularly arranged and set up the double loop of 110kV, see Fig. 1, shown in 2, the upper conductor cross-arm 2-4 of the lower wire cross-arm 2-3 on upper strata and lower floor is provided with 〉=safe distance of 6000mm, and safe distance of the present utility model can be arranged on 7000mm.

See shown in Fig. 3,4, it is the another kind of strain insulator corner structure of the utility model steel pipe pole, steel tube section is positive ten hexagonal, also the steel pipe by 5 sections backfin moulding is socketed to form, and the socket degree of depth is got 1.5 times, and the overall height after the steel pipe combination also is no more than 45 meters, be used for 50 ° with inside lock, the whole tapering 1/36 of steel pipe pole, the top diameter 740mm of steel pipe 1, base diameter 1990mm.Upper and lower lead cross-arm 2-1, the long only 3800mm of 2-3, the long only 4600mm of middle lead cross-arm 2-2, insulator string 3 adopts strain insulator string, is conventional drum type and arranges the 220kV double loop.The length of following two layers upper conductor cross-arm 2-4 is at 2800mm, length 〉=6100mm of lower wire cross-arm 2-5, minimum perpendicular distance between upper and lower lead cross-arm 2-4, the 2-5 is at 3500mm, the horizontal spacing 3800mm of two phase conductors, the home record lead is to steel pipe clear distance 2300mm, the place hangs strain insulator string 3 in the middle of upper and lower lead cross-arm 2-4,2-5 two ends and the lower wire cross-arm 2-5, the 110kV double-circuit line that is triangularly arranged, the upper conductor cross-arm 2-4 of the lower wire cross-arm 2-3 on upper strata and lower floor is provided with the safe distance greater than 6000mm.

The utility model can realize joint using four transmission lines in the urban distribution network construction, relaxing contradiction between power circuit construction and the local economic development, rationally utilizing aspect such as circuit corridor resource to have a clear superiority in, have remarkable economic efficiency and social benefit.

Claims

1, a kind of electric power transmission line four loop steel pipe poles, comprise the above polygon conical steel pipe (1) of pegging graft successively mutually of two joints and be fixedly connected on lead cross-arm on the steel pipe (1), the top of steel pipe (1) is provided with the ground wire cross-arm (4) of lightning-arrest usefulness, the steel pipe bottom of foot is provided with adpting flange, it is characterized in that:

A, five layers of top that is connected steel pipe (1) of described lead cross-arm, last three layers upper, middle and lower lead cross-arms (2-1), (2-2), (2-3) equidistant setting, two ends are hung with the insulator string (3) that is connected with dual loop transmission line;

B, following two layers upper and lower lead cross-arm (2-4), (2-5) two ends and lower wire cross-arm (2-5) middle part are hung with the insulator string (3) that is connected with another dual loop transmission line, its down cross-arm (2-5) length be last cross-arm (2-4) more than two times, be used to hang two phase conductors;

The lower wire cross-arm (2-3) on c, upper strata and the upper conductor cross-arm (2-4) of lower floor be provided with 〉=safe distance of 6000mm.

2, electric power transmission line four loop steel pipe poles according to claim 1 is characterized in that: the lead minimum perpendicular distance between described last three layers upper, middle and lower lead cross-arms (2-1), (2-2), (2-3) is at 5500mm.

3, electric power transmission line four loop steel pipe poles according to claim 1, it is characterized in that: the lead minimum perpendicular distance between described following two layers of upper and lower lead cross-arm (2-4), (2-5) is at 3500mm, and the length 〉=5900mm of lower wire cross-arm (2-5).

4, electric power transmission line four loop steel pipe poles according to claim 1, it is characterized in that: described insulator string (3) is suspension insulator or strain insulator string.