CN102979348A - Four-circuit lowering tower for high voltage transmission line - Google Patents
Four-circuit lowering tower for high voltage transmission line Download PDFInfo
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- CN102979348A CN102979348A CN2012105599725A CN201210559972A CN102979348A CN 102979348 A CN102979348 A CN 102979348A CN 2012105599725 A CN2012105599725 A CN 2012105599725A CN 201210559972 A CN201210559972 A CN 201210559972A CN 102979348 A CN102979348 A CN 102979348A
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Abstract
The invention relates to a four-circuit lowering tower for a high voltage transmission line. The four-circuit lowering tower comprises a tower head and a tower body, wherein the tower head is positioned at the upper end part of the tower body; cross arms in four layers are distributed on the tower head in sequence from top to bottom; and the cross arms respectively comprise a first cross arm, a second cross arm, a third cross arm and a fourth cross arm. Compared with the prior art, the four-circuit lowering tower provided by the invention has the advantages of convenience for mounting and overhauling, high safety, good economic efficiency and the like.
Description
Technical field
The present invention relates to a kind of iron tower of power transmission line, especially relate to a kind of high-tension line and force down tower with four loops.
Background technology
Electric force pole tower of the prior art mostly is greatly the double loop shaft tower, when building, need to consider trend and the safe distance of circuit, comprise distance between the shaft tower and the distance between the circuit, so when multiloop electric power is built, just need to increase the quantity of shaft tower, also valuable land resources has been proposed larger requirement simultaneously.Yet near the comparatively intensive location of population, more to the quantitative requirement in electric power transfer loop, and land resources is limited, the design of original double loop has been difficult to satisfy above-mentioned designing requirement.
Summary of the invention
Purpose of the present invention is exactly to provide in order to overcome the defective that above-mentioned prior art exists that a kind of installation and repairing is convenient, safe, the high-tension line of good economy performance forces down tower with four loops.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of high-tension line forces down tower with four loops, comprise tower head and body of the tower, described tower head is positioned at the body of the tower upper end, it is characterized in that, the four layers of cross-arm that distribute successively from top to bottom on the described tower head are respectively the first cross-arm, the second cross-arm, the 3rd cross-arm and the 4th cross-arm.
Described the first cross-arm is the bilateral symmetry structure, and its longitudinal section is for falling isosceles trapezoid.
Described the second cross-arm, the 3rd cross-arm and the 4th cross-arm include cross-arm body and the cross-arm projection that the longitudinal section is isosceles trapezoid, and described cross-arm projection is located at the right part of cross-arm body.
Described body of the tower adopts isometrical steel pipe.
Described cross-arm adopts angle with equal legs.
Compared with prior art, the present invention has the following advantages:
1, installation and repairing is convenient, and the different circuit wire all is positioned on the different cross-arms, and is unaffected each other during installation and repairing;
2, safe, the wire cross-arm is owing to hang two phase conductors, and length is corresponding increase also, and is identical with the ground wire cross-arm, arranges in the stage casing to strengthen the tabula face;
3, body of the tower part, slope over 10 is 3.22% on the steel tower body of the tower of the same type, and lower slope over 10 is 19.68%, and slope over 10 is 5.58% on this tower, and lower slope over 10 is 14.44%.Both compare, and upper slope over 10 increase is main considers that cross-arm is longer, and are larger to the body of the tower moment of torsion under the control operating mode (breaking and the installation operating mode), improve integral rigidity so must increase the body of the tower cross section.Lower slope over 10 reduces under main consideration control operating mode (accidental conditions) condition, and the body of the tower member stress reduces, and the steel tower root is opened and can suitably be dwindled, and the body of the tower slope is corresponding reducing also.
4, according to State Grid Corporation of China about applying the related request of new material in " amphitypy three is new ", according to the actual conditions science of the characteristic of high-strength steel material and load, economically and reasonably high-strength steel is applied, the utilization rate of this tower high-strength steel is about 23.5%.The utilization rate of four loop tower high-strength steel of the same type is about 25%.Both are very nearly the same, all satisfy the requirement of State Grid Corporation of China.
5, good economy performance, the both economical advantage of the present invention and double is apparent, at first two double floor spaces or corridor span width (13.7x2=27.4 rice) pass through the width (24 meters) of tower greater than four loops, secondly, Tower processing and installation period shorten, and operating expenses is corresponding minimizing also.Again, the iron tower foundation comprehensive cost obviously descends.
But it is 75.92 (t) that Dan Jisi passes through in the loop tower steel using amount, and two basic double weight of the same type are 59.14 (t), and four loop tower list base steel using amounts of the same type are 96.384 (t).Both relatively, the tower steel using amount is passed through in four loops increases respectively 28% and reduce 27%.
Description of drawings
Fig. 1 is structural representation of the present invention.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figure 1, a kind of high-tension line forces down tower with four loops, comprises tower head 2 and body of the tower 1, and described tower head 2 is positioned at body of the tower 1 upper end, the four layers of cross-arm that distribute successively from top to bottom on the described tower head 2 are respectively the first cross-arm 3, the second cross-arm 4, the 3rd cross-arm 5 and the 4th cross-arm 6.
Described the first cross-arm 3 is the ground wire cross-arm of bilateral symmetry structure, and its longitudinal section is for falling isosceles trapezoid.
Described the second cross-arm 4, the 3rd cross-arm 5 and the 4th cross-arm 6 include cross-arm body and the cross-arm projection that the longitudinal section is isosceles trapezoid, and described cross-arm projection is located at the right part of cross-arm body.Described body of the tower adopts isometrical steel pipe.Described cross-arm adopts angle with equal legs.
Claims (6)
1. a high-tension line forces down tower with four loops, comprise tower head and body of the tower, described tower head is positioned at the body of the tower upper end, it is characterized in that, the four layers of cross-arm that distribute successively from top to bottom on the described tower head are respectively the first cross-arm, the second cross-arm, the 3rd cross-arm and the 4th cross-arm.
2. a kind of high-tension line according to claim 1 forces down tower with four loops, it is characterized in that, described the first cross-arm is the bilateral symmetry structure, and its longitudinal section is for falling isosceles trapezoid.
3. a kind of high-tension line according to claim 1 forces down tower with four loops, it is characterized in that, described the second cross-arm, the 3rd cross-arm and the 4th cross-arm include cross-arm body and the cross-arm projection that the longitudinal section is isosceles trapezoid, and described cross-arm projection is located at the right part of cross-arm body.
4. a kind of high-tension line according to claim 1 forces down tower with four loops, it is characterized in that, described body of the tower adopts isometrical steel pipe.
5. a kind of high-tension line according to claim 1 forces down tower with four loops, it is characterized in that, described cross-arm adopts angle with equal legs.
6. a kind of high-tension line according to claim 1 forces down tower with four loops, it is characterized in that, described cross-arm stage casing arranges strengthens the tabula face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210559972.5A CN102979348B (en) | 2012-12-20 | 2012-12-20 | Tower is forced down in a kind of high-tension line four loops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210559972.5A CN102979348B (en) | 2012-12-20 | 2012-12-20 | Tower is forced down in a kind of high-tension line four loops |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102979348A true CN102979348A (en) | 2013-03-20 |
| CN102979348B CN102979348B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210559972.5A Active CN102979348B (en) | 2012-12-20 | 2012-12-20 | Tower is forced down in a kind of high-tension line four loops |
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| CN (1) | CN102979348B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176163A (en) * | 2015-10-26 | 2015-12-23 | 王秋芹 | Electric iron tower |
| CN105199456A (en) * | 2015-10-26 | 2015-12-30 | 王秋芹 | Electric-power iron tower with bird-expelling function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2691130Y (en) * | 2004-03-29 | 2005-04-06 | 江苏省电力公司无锡供电公司 | 220 Kv four loop iron tower structure |
| CN200961372Y (en) * | 2006-11-01 | 2007-10-17 | 广东省电力设计研究院 | Branch pole of quadruple-circuit transmission line on the same pole |
| CN201771243U (en) * | 2010-07-16 | 2011-03-23 | 潍坊长安铁塔股份有限公司 | Multi-loop common-tower common-frame iron tower |
| US20110265419A1 (en) * | 2008-12-31 | 2011-11-03 | Seccional Brasil SA | Metallic tower |
| CN202081689U (en) * | 2010-12-30 | 2011-12-21 | 国家电网公司 | Alternating-current ultrahigh voltage single-tower dual-loop terminal tower |
| CN203113875U (en) * | 2012-12-20 | 2013-08-07 | 上海市电力公司 | Four-loop lowering tower for high-tension lines |
-
2012
- 2012-12-20 CN CN201210559972.5A patent/CN102979348B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2691130Y (en) * | 2004-03-29 | 2005-04-06 | 江苏省电力公司无锡供电公司 | 220 Kv four loop iron tower structure |
| CN200961372Y (en) * | 2006-11-01 | 2007-10-17 | 广东省电力设计研究院 | Branch pole of quadruple-circuit transmission line on the same pole |
| US20110265419A1 (en) * | 2008-12-31 | 2011-11-03 | Seccional Brasil SA | Metallic tower |
| CN201771243U (en) * | 2010-07-16 | 2011-03-23 | 潍坊长安铁塔股份有限公司 | Multi-loop common-tower common-frame iron tower |
| CN202081689U (en) * | 2010-12-30 | 2011-12-21 | 国家电网公司 | Alternating-current ultrahigh voltage single-tower dual-loop terminal tower |
| CN203113875U (en) * | 2012-12-20 | 2013-08-07 | 上海市电力公司 | Four-loop lowering tower for high-tension lines |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176163A (en) * | 2015-10-26 | 2015-12-23 | 王秋芹 | Electric iron tower |
| CN105199456A (en) * | 2015-10-26 | 2015-12-30 | 王秋芹 | Electric-power iron tower with bird-expelling function |
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| Publication number | Publication date |
|---|---|
| CN102979348B (en) | 2016-01-06 |
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