CN202767607U - ZV81 tangent tower for plus or minus 400 kV direct-current power transmission line - Google Patents

ZV81 tangent tower for plus or minus 400 kV direct-current power transmission line Download PDF

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Publication number
CN202767607U
CN202767607U CN2012201511941U CN201220151194U CN202767607U CN 202767607 U CN202767607 U CN 202767607U CN 2012201511941 U CN2012201511941 U CN 2012201511941U CN 201220151194 U CN201220151194 U CN 201220151194U CN 202767607 U CN202767607 U CN 202767607U
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China
Prior art keywords
tower
power transmission
transmission line
tangent
tangent tower
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Expired - Lifetime
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CN2012201511941U
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Chinese (zh)
Inventor
张媛
杨林
张芳杰
王虎长
张小力
胡建民
胡志义
王学明
吴彤
郝阳
谭江
魏鹏
张勇
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DC CONSTRUCTION BRANCH STATE GRID CORP OF CHINA
Northwest Electric Power Design Institute of China Power Engineering Consulting Group
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Priority to CN2012201511941U priority Critical patent/CN202767607U/en
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Publication of CN202767607U publication Critical patent/CN202767607U/en
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Abstract

The utility model discloses a ZV81 tangent tower for a plus or minus 400 kV direct-current power transmission line. The ZV81 tangent tower comprises a ground wire bracket, a lead wire cross arm, a tower head, a tower body and a tower leg, wherein the ground wire bracket is arranged at the upper part of a tower head cross arm and used for suspending a ground wire; the lead wire cross arm is positioned at the lower part of the tower head and used for suspending phase power transmission lines on the two sides; and the main material of the ZV81 tangent tower adopts moderately strong angle steel. By adopting the embodiment of the utility model, the requirements of the plus or minus 400 kV direct-current power transmission line can be met.

Description

A kind of ± 400kV DC power transmission line ZV81 tangent tower
Technical field
The utility model relates to the high voltage iron tower field, particularly relates to a kind of ± 400kV DC power transmission line ZV81 tangent tower.
Background technology
Before this ± and 500kV is the minimum voltage grade of China's direct current high tension transmission circuit, 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, design ± 400kV DC power transmission line ZV81 tangent tower is the technical problem that those skilled in the art are badly in need of solving.
The utility model content
Technical problem to be solved in the utility model provides a kind of ± 400kV DC power transmission line ZV81 tangent tower can satisfy ± requirement of 400kV DC power transmission line.
For achieving the above object, the utility model provides a kind of ± 400kV DC power transmission line ZV81 tangent tower, described ZV81 tangent tower comprises earth wire support, wire cross-arm, body of the tower and tower leg; Wherein said earth wire support is arranged on described wire cross-arm top, is used for hanging ground wire; Described wire cross-arm is positioned at described body of the tower top, is used for hanging both sides phase transmission pressure;
Strong angle steel during the main material of described ZV81 tangent tower adopts.
Preferably, described earth wire support bilateral symmetry, i.e. E1=E2, and wire is negative shielding angle.
Preferably, the wire cross-arm of described ZV81 tangent tower is trapezoidal cross-arm, and bilateral symmetry, i.e. E3=E4, E5=E6.
Preferably, two phase conductors of described ZV81 tangent tower adopt the V-arrangement insulator string.
Preferably, the material at described ZV81 tangent tower conducting wire hanging point place adopts angle cleat.
Preferably, described ZV81 tangent tower arranges two half spaces.
Preferably, described ZV81 tangent tower adopts complete unequel leg extension.
Preferably, described ZV81 tangent tower adopts the locking measure of full tower double-nut bolt.
Compared with prior art, the utlity model has following advantage:
The utility model provides a kind of ± 400kV DC power transmission line ZV81 tangent tower in order to save tower weight, reduces cost, and 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; Full tower adopts the screw retention measure, has reduced highlands maintainer's workload, has guaranteed the line security operation.
Description of drawings
Fig. 1 is the single line drawing of of the present utility model ± 400kV DC power transmission line ZV81 tangent tower;
Fig. 2 is the ground wire hanging point structure chart of ZV81 tangent tower described in the utility model;
Wherein (a) is top view, (b) is lateral view;
Fig. 3 is the conducting wire hanging point structure chart of ZV81 tangent tower described in the utility model.
The specific embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
With reference to Fig. 1, be the single line drawing of of the present utility model ± 400kV DC power transmission line ZV81 tangent tower.
Described ZV81 tangent tower comprises: earth wire support 8, wire cross-arm 9, body of the tower 4 and tower leg 1.
Described earth wire support 8 is arranged on described tower body of the tower 4 tops.Described earth wire support 8 comprises two branches, lays respectively at the left and right sides on described body of the tower top, and plane is trapezoidal for closing up on it, to tower head the right and left horizontal stretching and keep isometric, i.e. and E1=E2.
Described earth wire support 8 is used for hanging ground wire, the two-phase transmission pressure is shielded, and adopts negative shielding angle, namely right ground wire hanging point to the body of the tower axis apart from E2 greater than right conducting wire hanging point to the body of the tower axis apart from E4; Left ground wire hanging point to the body of the tower axis apart from E1 greater than left conducting wire hanging point to the body of the tower axis apart from E3.
Described wire cross-arm 9 is positioned at described earth wire support 8 bottoms.Described wire cross-arm 9 comprises two branches, lay respectively at the left and right sides of described tower head bottom, its lower plane is trapezoidal for closing up, to tower head the right and left horizontal stretching and keep symmetrical, namely right conducting wire hanging point to the body of the tower axis apart from E4 equal left conducting wire hanging point to the body of the tower axis apart from E3; Right wire cross-arm outermost end to the body of the tower axis apart from E6 equal left wire cross-arm outermost end to the body of the tower axis apart from E5.
Described wire cross-arm 9 is used for hanging both sides phase transmission pressure, and satisfies the electric clearance requirement.
Preferentially, two phase conductors of described ZV81 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.
Preferably, described ZV81 tangent tower arranges two half spaces.For high height above sea level anoxic, the effect characteristics such as serious fall in work, for assurance group pylon informant person and maintainer fully have a rest and personal safety, become the slope at DC line steel tower cross-arm and body of the tower junction 5 and body of the tower first and locate 3 and all be provided with half space.
Preferably, ZV81 tangent tower described in the utility model, ground wire hanging point directly arrange on the double angle of earth wire support end, specifically referring to Fig. 2.
Preferably, the hanging point of the wire V-type insulator string of described ZV81 tangent tower is separately positioned on end and the root of cross-arm, all adopts double angle, specifically referring to Fig. 3.Adopt this structure, 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.
Preferably, described ZV81 tangent tower tower leg 1 adopts complete unequel leg extension, has farthest reduced earthwork evacuation amount and soil erosion, has protected the ecological environment of Qinghai-xizang Plateau Region fragility.
Preferably, described ZV81 tangent tower tower leg 1 has adopted public leg 2, and this public leg is convenient to processing so that connect the leg construction standard, is conducive to simultaneously the assembling of highlands.
Preferably, the ZV81 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.
Above provided by the utility model ± 400kV DC power transmission line ZV81 tangent tower is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, 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 (9)

1. one kind ± 400kV DC power transmission line ZV81 tangent tower is characterized in that, described ZV81 tangent tower comprises earth wire support, wire cross-arm, tower head, body of the tower and tower leg; Wherein, described earth wire support is arranged on described tower head top, is used for hanging ground wire; Described wire cross-arm is positioned at described tower head bottom, is used for hanging both sides phase transmission pressure;
Strong angle steel during the main material of described ZV81 tangent tower adopts.
2. according to claim 1 ± 400kV DC power transmission line ZV81 tangent tower is characterized in that, described earth wire support bilateral symmetry, and wire is negative shielding angle.
3. according to claim 1 ± 400kV DC power transmission line ZV81 tangent tower is characterized in that, described wire cross-arm is trapezoidal cross-arm, and bilateral symmetry.
4. according to claim 1,2 or 3 described ± 400kV DC power transmission line ZV81 tangent towers, it is characterized in that, the wire hitch point of described ZV81 tangent tower is connected LD link plate gold utensil to be connected with suspension insulator with the ground wire hanging point.
5. according to claim 1 ± 400kV DC power transmission line ZV81 tangent tower is characterized in that, two phase conductors of described ZV81 tangent tower adopt the V insulator string.
6. according to claim 3 ± 400kV DC power transmission line ZV81 tangent tower is characterized in that, the member at described ZV81 tangent tower conducting wire hanging point place adopts angle cleat.
7. according to claim 1 ± 400kV DC power transmission line ZV81 tangent tower is characterized in that, described ZV81 tangent tower arranges half space at wire cross-arm and body of the tower junction with place, change slope respectively.
8. according to claim 1 ± 400kV DC power transmission line ZV81 tangent tower is characterized in that, described ZV81 tangent tower adopts complete unequel leg extension.
9. according to claim 1 ± 400kV DC power transmission line ZV81 tangent tower is characterized in that, described ZV81 tangent tower adopts full tower double-nut bolt anti-loose structure.
CN2012201511941U 2012-04-11 2012-04-11 ZV81 tangent tower for plus or minus 400 kV direct-current power transmission line Expired - Lifetime CN202767607U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104005592A (en) * 2014-06-05 2014-08-27 国家电网公司 110 kV lattice type composite material tower
CN104060877A (en) * 2014-07-14 2014-09-24 国家电网公司 Economical efficiency analyzing method based on comprehensive unequal length spliced leg iron tower
CN112178018A (en) * 2020-09-01 2021-01-05 南方电网科学研究院有限责任公司 Connecting structure and mounting structure of overhang angle steel tower insulator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104005592A (en) * 2014-06-05 2014-08-27 国家电网公司 110 kV lattice type composite material tower
CN104005592B (en) * 2014-06-05 2016-08-17 国家电网公司 A kind of 110kV lattice composite material pole tower
CN104060877A (en) * 2014-07-14 2014-09-24 国家电网公司 Economical efficiency analyzing method based on comprehensive unequal length spliced leg iron tower
CN112178018A (en) * 2020-09-01 2021-01-05 南方电网科学研究院有限责任公司 Connecting structure and mounting structure of overhang angle steel tower insulator

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA

Free format text: FORMER NAME: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION

CP03 Change of name, title or address

Address after: 22 No. 710075, unity South Road, hi tech Industrial Development Zone, Shaanxi, Xi'an

Co-patentee after: DC Construction Branch, State Grid Corp. of China

Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP

Address before: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No.

Co-patentee before: DC Construction Branch, State Grid Corp. of China

Patentee before: Northwest Electric Power Design Institute, China Power Engineering Consulting Group Corporation

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20130306