CN202672824U - Tangent tower for +/- 400 kV direct current transmission line - Google Patents
Tangent tower for +/- 400 kV direct current transmission line Download PDFInfo
- Publication number
- CN202672824U CN202672824U CN 201220313491 CN201220313491U CN202672824U CN 202672824 U CN202672824 U CN 202672824U CN 201220313491 CN201220313491 CN 201220313491 CN 201220313491 U CN201220313491 U CN 201220313491U CN 202672824 U CN202672824 U CN 202672824U
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Abstract
The utility model relates to a tangent tower for a +/- 400 kV direct current transmission line, comprising a tower body, conductor cross arms and an earth wire bracket; the conductor cross arms are symmetrically arranged on the top of the tower body; the total length of the conductor cross arms is 29.7 meters; two branches of the earth wire bracket are symmetrically arranged on the conductor cross arms; the lower plane of each conductor cross arm is trapezoidal; rest platforms are arranged at the connection part of the conductor cross arms and the tower body, and at the varying slope position of the tower body; and the width of the rest platform arranged at the connection part of the conductor cross arms and the tower body is 2.5 meters, and the width of the rest platform arranged at the varying slope position of the tower body is 3.9 meters. According to the tangent tower for the +/- 400 kV direct current transmission line, in order to save the weight of the tangent tower and reduce the manufacturing cost, the lower plane of each conductor cross arm is designed into trapezoid, and the left and right of the trapezoid are identical in length; the tangent tower is used in high-altitude areas, and double rest platforms are arranged, so that the tower assembly and stringing workers can carry out tower assembly or stringing conveniently; and anti-loosening measure is carried out on the whole tower, so that the workload of maintenance personnel in the high-altitude areas is reduced, and the transmission line is guaranteed to operate safely.
Description
Technical field
The utility model relates to the high voltage iron tower field, particularly relates to the tangent tower for ± 400kV DC power transmission line.
Background technology
In the prior art, ± 500kV is the minimum voltage grade of China's direct current high tension transmission circuit, and for picture Golmud～Lhasa work transmission line, because the load of Tibet Power Grid is less, employing ± 500kV economy is not good.In order to carry out the strategic objective of the Party Central Committee, State Council's enforcement " development of the West Regions ", alleviate the recent short of electricity situation of electrical network in the Tibetan, satisfy Tibet at a specified future date social economy to the requirement of electric power development, taking into account simultaneously economic feasibility, China is successfully completed ± the developing of 400kV HVDC Transmission Technology.
± 400kV DC power transmission line load less, the hanging wire gold utensil is also different simultaneously, can not indiscriminately imitate the line steel tower of existing other electric pressure.Therefore, the tangent tower of design ± 400kV DC power transmission line is the technical problem that those skilled in the art are badly in need of solving.
The utility model content
The purpose of this utility model is to provide a kind of tangent tower for ± 400kV DC power transmission line, to satisfy ± requirement of 400kV DC power transmission line.
To achieve these goals, the utility model adopts following technical scheme:
Be used for ± tangent tower of 400kV DC power transmission line, comprise body of the tower, wire cross-arm and earth wire support; Wire cross-arm symmetry be arranged at the body of the tower top; The overall length of wire cross-arm is 29.7 meters; Two branches of earth wire support are symmetricly set on the wire cross-arm; The lower plane of wire cross-arm is trapezoidal; The junction of wire cross-arm and body of the tower and place, the change of body of the tower slope are provided with half space; The half space width of wire cross-arm and body of the tower junction is 2.5 meters, and the half space width at the place, change slope of body of the tower is 3.9 meters.
The utility model further improves and is: the distance of change slope place's distance of wire cross-arm of body of the tower and the junction of body of the tower is 12 meters.
The utility model further improves and is: the bottom of body of the tower is provided with common section, and the common section bottom is provided with tower leg.
The utility model further improves and is: the place, change slope of body of the tower is 63 meters apart from the tower leg bottom.
The utility model further improves and is: the bottom of wire cross-arm is provided with conducting wire hanging point.
Compared with prior art, the utlity model has following advantage: a kind of tangent tower for ± 400kV DC power transmission line of the utility model, in order to save tower weight, reduce cost, wire cross-arm lower plane is designed to trapezoidal, and the left and right sides is isometric; Because being located in the highlands, two half spaces are set, made things convenient for group pylon informant person and maintainer to organize tower or maintenance; Adopt the locking measure of full tower, reduced highlands maintainer's workload, guaranteed the line security operation.
Description of drawings
Fig. 1 is the structural representation of a kind of tangent tower for ± 400kV DC power transmission line of the utility model.
The specific embodiment
See also shown in Figure 1ly, a kind of tangent tower for ± 400kV DC power transmission line of the utility model comprises: body of the tower 1, wire cross-arm 2, earth wire support 3, common sections 4 and tower leg 5.
Earth wire support 3 is arranged on the wire cross-arm 2 on body of the tower 1 top.Earth wire support 3 comprises two branches, lays respectively at the left and right sides on body of the tower 1 top, and plane is trapezoidal for closing up on it, to tower head the right and left horizontal stretching and keep isometric.Two branch's outermost end 30 of earth wire support 3 are 10.3 meters to the distance of the axis of body of the tower, and the height of earth wire support 3 is 2.5 meters.
Earth wire support 3 is used for hanging ground wire, and the two-phase transmission pressure is shielded.
Wire cross-arm 2 is positioned at earth wire support 3 bottoms.Wire cross-arm 2 comprises two branches, lays respectively at the left and right sides of tower head bottom, and its lower plane is trapezoidal for closing up, and is symmetrical to tower head the right and left horizontal stretching and maintenance.Wire cross-arm 2 is used for hanging the two poles of the earth transmission pressure, and satisfies the electric clearance requirement.Wire cross-arm 2 overall lengths are 29.7 meters, highly are 2.5 meters.
Two phase conductors of the utility model tangent tower all adopt the V-type insulator string, have reduced and have fallen the string accident, reduce the windage yaw probability of flashover, have ensured the safe operation of engineering.
The utility model tangent tower arranges two half spaces.For high height above sea level anoxic, the characteristics such as effect is serious fall in work, for assurance group pylon informant person and maintainer fully have a rest and personal safety, become place, slope 11 at wire cross-arm 2 and body of the tower 1 junction 12 and body of the tower and all be provided with half space, wire cross-arm 2 is 2.5 meters with the half space width of body of the tower 1 junction 12, the half space width at the place, change slope 11 of body of the tower is 3.9 meters, has enough spaces to have a rest for the maintainer; Place, the change slope 11 distance of wire cross-arms 2 of body of the tower are 12 meters with the distance of the junction 12 of body of the tower 1; Become place, slope 11 and be 63 meters apart from tower leg 5 bottoms.
Body of the tower 1 bottom connects tower leg 5 by common section 4, has reduced difficulty of processing, makes steel tower connect leg and uses more flexible; Common section 4 highly is 2.5 meters.
The hanging point of the wire V-type insulator string of the utility model tangent tower is separately positioned on end and the root of cross-arm, all adopt the double angle structure, this kind structure has been avoided the welding job at hanging point place, for the line steel tower under the low temperature condition of high height above sea level, can effectively strengthen the stress-bearing capability of hanging wire node, guarantee the requirements such as hanging wire node strength.
The utility model tangent tower adopts the locking measure of full tower double-nut bolt, under the adverse weather conditions such as Qinghai-Tibet Platean cold, anoxic, has reduced maintainer's workload, has also improved the circuit Operation safety simultaneously.
The explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (5)
1. be used for ± tangent tower of 400kV DC power transmission line, it is characterized in that, comprise body of the tower (1), wire cross-arm (2) and earth wire support (3); Wire cross-arm (2) is symmetrical is arranged at body of the tower (1) top; The overall length of wire cross-arm (2) is 29.7 meters; Two branches of earth wire support (3) are symmetricly set on the wire cross-arm (2); The lower plane of wire cross-arm (2) is trapezoidal; Wire cross-arm (2) is provided with half space with the junction (12) of body of the tower (1) and the change place, slope (11) of body of the tower (1); Wire cross-arm (2) is 2.5 meters with the half space width of body of the tower (1) junction (12), and the half space width at the change place, slope (11) of body of the tower (1) is 3.9 meters.
2. the tangent tower for ± 400kV DC power transmission line according to claim 1 is characterized in that, change slope place's (11) distance of wire cross-arm (2) of body of the tower (1) is 12 meters with the distance of the junction (12) of body of the tower (1).
3. the tangent tower for ± 400kV DC power transmission line according to claim 1 is characterized in that the bottom of body of the tower (1) is provided with common section (4), and common section (4) bottom is provided with tower leg (5).
4. the tangent tower for ± 400kV DC power transmission line according to claim 3 is characterized in that, the change place, slope (11) of body of the tower (1) is 63 meters apart from tower leg (5) bottom.
5. the tangent tower for ± 400kV DC power transmission line according to claim 1 is characterized in that the bottom of wire cross-arm (2) is provided with conducting wire hanging point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220313491 CN202672824U (en) | 2012-06-29 | 2012-06-29 | Tangent tower for +/- 400 kV direct current transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220313491 CN202672824U (en) | 2012-06-29 | 2012-06-29 | Tangent tower for +/- 400 kV direct current transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202672824U true CN202672824U (en) | 2013-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220313491 Expired - Lifetime CN202672824U (en) | 2012-06-29 | 2012-06-29 | Tangent tower for +/- 400 kV direct current transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202672824U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343275A (en) * | 2013-08-08 | 2015-02-11 | 国家电网公司 | Rest platform of crossing tower and crossing tower |
| CN105097116A (en) * | 2015-07-24 | 2015-11-25 | 中国电力科学研究院 | High-transmission capacity power cable |
-
2012
- 2012-06-29 CN CN 201220313491 patent/CN202672824U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343275A (en) * | 2013-08-08 | 2015-02-11 | 国家电网公司 | Rest platform of crossing tower and crossing tower |
| CN105097116A (en) * | 2015-07-24 | 2015-11-25 | 中国电力科学研究院 | High-transmission capacity power cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA ENERGY ENGINEERING GROUP SHAANXI ELECTRIC PP Free format text: FORMER NAME: SHAANXI ELECTRIC POWER DESIGN INSTITUTE |
|
| CP03 | Change of name, title or address |
Address after: Huan Cheng Nan Lu, Beilin District 710054 East Shaanxi city of Xi'an province No. 50 Patentee after: CEEC SHAANXI ELECTRIC POWER DESIGN INSTITUTE Address before: 710054 Xi'an, Shaanxi, Xiang Xiang Road, No. 99 Patentee before: Shaanxi Electric Power Design Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |