CN2909652Y - Co-tower double-loop compact linear transmission pylon - Google Patents
Co-tower double-loop compact linear transmission pylon Download PDFInfo
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- CN2909652Y CN2909652Y CN 200620118115 CN200620118115U CN2909652Y CN 2909652 Y CN2909652 Y CN 2909652Y CN 200620118115 CN200620118115 CN 200620118115 CN 200620118115 U CN200620118115 U CN 200620118115U CN 2909652 Y CN2909652 Y CN 2909652Y
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Abstract
The utility model provides a 500KV one-tower two-circuit compact straight-lined transmission iron tower, consisting of a tower body, a tower head and lead wires. The two circuit lead wires are arranged on two sides of the tower body. The tower head is equipped with an upper arm, at the two ends of which hung a phase conductor through suspension insulators, and a folding-jib styled lower arm, at the two ends of which hung a phase conductor through suspension insulators and another phase conductor through v-typed insulators in connection with the tower body. The utility model not only enhances the lightning proof ability of the circuits and reduces the tower height effectively, but also save the steel materials, whereby achieving the economic benefit of reducing the cost of circuits.
Description
Technical field
The utility model is relevant a kind of transmission facility, refers to the brand-new electric power pylon that a kind of 500 kilovolts of same tower double back transmission lines use especially.
Background technology
The electric power pylon that 500 kilovolts of same tower double back transmission lines of China use is the conventional tangent tower that the three-phase conducting wire vertical arrangement is suspended on the iron tower both sides.But, satisfying at the lead distance to the ground under the prerequisite of rules requirement, the height of conventional tangent tower will reach 60m～70m usually, the average 22m in shared circuit corridor, lightning withstand level is along with the also corresponding reduction of the increase of tower height.
As shown in Figure 1, existing conventional common-tower double-return 500kV line steel tower [that is: the conventional drum type tangent tower of 500kV common-tower double-return] design tower height often surpasses 60m, has not only influenced anti-damage to crops caused by thunder ability, also is one of high reason of existing iron tower consumption steel index.33.0m exhale the common tower height of high tower all more than the 56.0m, convergence 60.0m or more than the 60.0m, adjust all convergences 1.6 or of coefficient by existing DL/T5092-1999 " 110-500kV aerial power transmission line designing technique rules " wind load greater than 1.6, by existing DL/T5092-1999 " 110-500kV aerial power transmission line designing technique rules " requirement overall height is surpassed the tower of 60.0m, will adopt by existing national regulation " loading code for design of building structures " to increase piecemeal from down to up and weighted average should be less than 1.6 value.Therefore, the 500kV of DL/T5092-1999 issuing and implementation back when in the past carrying out SDJ3-79 is two returns the drum type towers to consume the steel index with tower and frame also higher.From engineering generally speaking, the two drum type tangent towers that return with tower and frame of 500kV are not near 60.0m, are exactly more than 60.0m.It is not to be exactly also bigger than 1.6 near 1.6 that blast is adjusted coefficient.Like this, must cause the two raisings of returning of 500kV with tower and frame use drum type straight line tower engineering body cost.As seen reduce full tower height degree, blast is adjusted coefficient, and to be controlled at 1.5 should be the feasible solution that reduces consumption steel index; And height variation coefficient of wind pressure also can reduce, and only this just can reduce 6-7% with the wind load that acts on the full tower.
The utility model content
The purpose of this utility model is to provide a kind of iron tower of new structure, has not only improved the lightning protection properties of circuit, effectively reduces tower height, has also saved steel simultaneously, has received the economic benefits that reduce circuit body cost.
For this reason, the utility model has adopted following technical scheme:
A kind of 500KV common-tower double-return shrunk type straight line electric power pylon, it includes body of the tower, tower head and lead, and the double loop conductor arrangement is in the body of the tower both sides, wherein:
This tower head includes upper strata cross-arm and the lower floor's cross-arm that is distributed in the body of the tower both sides, the both ends of this upper strata cross-arm have hung a phase conductor by suspension insulator, this lower floor's cross-arm is a swallow formula folding arm structure, both ends at this lower floor's cross-arm have hung a phase conductor by suspension insulator, and have also hung a phase conductor by the V-type insulator string between the both ends of this lower floor's cross-arm and body of the tower.
This little tilting upward in cross-arm two ends, upper strata wherein.
The both ends of this lower floor's cross-arm are 28.7m by the distance of going here and there between the lead that hangs of dangling.
This iron tower height is between 40m-50m.
Upper strata of the present utility model cross-arm hangs lead and uses suspension insulator, the limit phase conductor of lower floor's cross-arm two phase conductors hangs and uses suspension insulator, uses the V-type insulator string near the phase conductor suspension of body of the tower, compress the distance between lower floor's two phase conductors, be designed to swallow formula folding arm cross-arm on lower floor's cross-arm structure.Because the cross-arm size had been dwindled in the swing of phase conductor in the V-type insulator string had limited, make both sides be compressed to about 28.7m mutually apart.
The utility model provides a kind of 500 kilovolts of common-tower double-return shrunk type towers, and the height of iron tower behind the reduction iron tower height, has improved the line thunder protection performance usually as long as 40m～50m has realized the deflation scheme, has improved the reliability of line security operation.Single basic tangent tower iron tower steel quantity consumption also reduces approximately 20% than conventional common-tower double-return 500kV circuit, reduced the iron tower foundation active force simultaneously, and the base concrete consumption reduces about 10% than conventional common-tower double-return 500kV circuit.
Description of drawings
Fig. 1 is the structural representation of conventional electric power pylon;
Fig. 2 is the structural representation of the utility model embodiment one shrunk type electric power pylon;
Fig. 3 is the structural representation of the utility model Comparative Examples one shrunk type electric power pylon;
Fig. 4 is the structural representation of the utility model Comparative Examples two shrunk type electric power pylons;
Fig. 5 is the structural representation of the utility model Comparative Examples three shrunk type electric power pylons;
[figure number explanation]
1 body of the tower, 2 tower heads
21 upper strata cross-arms, 22 lower floor's cross-arms
211,212 suspension insulators, 213,214 suspension insulators
215,216V type insulator string 31-36 lead
Embodiment
For the clear structure of the present invention of your auditor is formed, and the overall operation mode, cooperate graphic being described as follows now:
500kV common-tower double-return shrunk type tangent tower described in the utility model is to be different from a kind of brand-new tower of tower in the past.The tower head determining dimensions then is the layout pattern of lead, so on the analysis foundation of the conventional drum type tower of conventional common-tower double-return to China 500kV, the research of the arrangement of the multiple tower head of process and Technological Economy are relatively, in all multi-schemes, develop the brand-new tower technical scheme of the two-layer cross-arm of the utility model.Below in conjunction with embodiment and Comparative Examples the utility model is described.
Embodiment one
Two the returning with the tower head of tower and frame shrunk type transmission line tangent tower of present embodiment 500kV arranged, two loops are arranged in the both sides of body of the tower 1, as shown in Figure 2: this electric power pylon includes body of the tower 1, tower head 2 and lead, the double loop conductor arrangement is in the body of the tower both sides, of the present utility model focusing on: this tower head 2 includes upper strata cross-arm 21 and the lower floor's cross-arm 22 that is symmetrically distributed in the body of the tower both sides, the both ends of this upper strata cross-arm 21 have hung a phase conductor 31,32 by suspension insulator 211,212, wherein this little tilting upward in upper strata cross-arm 21 two ends; This lower floor's cross-arm 22 is a swallow formula folding arm structure, both ends at this lower floor's cross-arm 22 have hung a phase conductor 33,34 by suspension insulator 213,214, and have also hung a phase conductor 35,36 by V-type insulator string 215,216 between the both ends of this lower floor's cross-arm 22 and body of the tower 2.
The upper strata cross-arm of present embodiment hangs lead and uses suspension insulator, the limit phase conductor of lower floor's cross-arm two phase conductors hangs and uses suspension insulator, uses the V-type insulator string near the phase conductor suspension of body of the tower, compress the distance between lower floor's two phase conductors, be designed to swallow formula folding arm cross-arm on lower floor's cross-arm structure.Because the cross-arm size had been dwindled in the swing of phase conductor in the V-type insulator string had limited, make both sides be compressed to about 28.7m mutually apart.
Comparative Examples one
As shown in Figure 3, the upper strata cross-arm hangs a ground one and leads, and lower floor's cross-arm hangs two phase conductors, and it all uses the mode of the string that dangles.This Comparative Examples cross-arm lead is at the middle and upper levels used the string that dangles, and lower floor's cross-arm two phase conductors also all use the string that dangles, both sides, and at a distance of 35.0m, lower floor's cross-arm reaches 15.5m mutually.
Comparative Examples two
As shown in Figure 4, the upper strata cross-arm hangs that a ground two is led, lower floor's cross-arm hangs a phase conductor it all uses modes of the string that dangles.This Comparative Examples cross-arm lead is at the middle and upper levels used the string that dangles, and lower floor's cross-arm one also uses the string that dangles mutually.Both sides apart fail to reduce mutually, and because the two-phase lead concentrates on top of tower, have strengthened the moment of flexure of body of the tower undoubtedly.
Comparative Examples three
As shown in Figure 5, the upper strata cross-arm hangs a ground two and leads (lining phase V string), and lower floor's cross-arm hangs a phase conductor.This Comparative Examples cross-arm limit phase conductor lead of side (promptly) is at the middle and upper levels used the string that dangles, and uses V to go here and there near phase conductor in the body of the tower.The string that dangles is used in one Xiangli of lower floor's cross-arm.The cross-arm size has been dwindled in phase conductor swing in the upper strata cross-arm has limited owing to V goes here and there, though make both sides be compressed mutually apart, same owing to the two-phase lead concentrates on top of tower, also strengthened the moment of flexure of body of the tower.
Contrast the above embodiments one and Comparative Examples one, Comparative Examples two, Comparative Examples three, embodiment one is to use the delta arrangement mode to arrange the preferred option of lead in the dried font tower of double-deck cross-arm.Upper strata cross-arm 21 among this embodiment hangs a ground one and leads (this ground wire is the beak tip that hangs over the beak shape position, high-order bit of upper strata cross-arm 21), lower floor's cross-arm 22 of swallow formula folding-jib hangs two phase conductors (lining phase V string) is compressed both sides mutually apart, and a ground one is led at upper strata cross-arm 21, two phase conductors and is hung on lower floor's cross-arm 22, big portion load concentrates on the bottom, has reduced the moment of flexure of body of the tower.
Based on above-mentioned analysis, we arrange at the delta arrangement mode that the double-deck cross-arm of lead does that the body of the tower gradient of font tower is selected and amount of deflection control, body of the tower master material trifle between length comparison, body of the tower master material segmentation (processing sections) selection, the oblique material layout of body of the tower, cross-arm internode, tabula face form selection, angle steel tower and steel tube tower relatively to wait several aspects to carry out optimal design result as follows:
SZI (33.0m exhales and claims height) Dan Jita consumption steel index 25.3t, wherein, " exhale and claim height " speech is the professional universal word of transmission of electricity, refers to the height of electric power pylon lower wire cross-arm lower plane to ground.Because arbitrary electric power pylon all is the height that the distance to the ground of lower wire sag is controlled this tower, therefore " exhaling and claim height " just becomes the basic parameter of measurement with the design condition iron tower;
SZII (42.0m exhales and claims height) Dan Jita consumption steel index 34.4t;
To sum up state, the described a kind of double-deck cross-arm that uses the delta arrangement mode to arrange lead of present embodiment is done font tower (it uses swallow formula folding arm cross-arm) and is compared with conventional drum type tangent tower, just the corridor is wide 5m-6m, but tower height is reduced to about 47m from nearly 62m, reduce tower height effectively, reduced steel consumption significantly.Compare with tower and frame drum type tangent tower with conventional 500kV power transmission sequence, reduce steel consumption 20%.And owing to reduced tower height effectively, exhale the lightning withstand level that claims drum type tangent tower high, insulation configuration equally and double-deck cross-arm to do the font tangent tower to be respectively 170kA/100km. and 196kA/100km. equally, lightning protection properties improves a lot.Simultaneously, the delta arrangement mode is arranged lead, and the maximum ground field intensity has reduced about 10% than conventional line under the line, and the scope in high field intensity district is also little, can make the lead distance to the ground be reduced to 10.5m from 11m, and the degree of balance is also much better from electric parameter.
Two the returning with tower and frame shrunk type transmission line tangent tower tower head of 500kV arranges that two loops are arranged in the both sides (as shown in Figure 2) of body of the tower.The characteristics that three characteristics of the middle term lead shrunk type is arranged, the following phase inboard wire V-type insulator string 215,216 that hangs on lower floor's cross-arm 22 with down mutually outboard wire suspension insulator 213,214 need electric clearance between satisfied two phase conductors, and requirement relatively, lower floor's cross-arm 22 uses the form of swallow formula folding arm cross-arm among the utility model embodiment, can satisfy these requirements.(this ground wire is the beak tip 210 that hangs over the beak shape position, high-order bit of upper strata cross-arm 21 for 31,32 of last phase conductors that hangs on the upper strata cross-arm 21 and ground wire cross-arm.) be merged into one and littlely upwarp cross-arm and lower floor cross-arm 22 echoes mutually, broken through the traditional arrangement form, not only reach and improve the line thunder protection performance, reduce the purpose of engineering body investment, also received good visual effect.
The described swallow formula of present embodiment is done the experts' evaluation that the font tower has passed through power grid construction branch company of State Power Corporation tissue.Evaluation confirms that the pyramidal structure that proposes all meets the main technical requirements of planning to build the 500kV common-tower double-return shrunk type circuit of establishing in the works, has solved the iron tower structural shape problem of building 500kV common-tower double-return shrunk type circuit.
Present China 500kV common-tower double-return and frame transmission line, building cost is higher, and the more single back transmission line of the anti-thunder characteristic of 500kV common-tower double-return and frame transmission line is poor, for reducing common-tower double-return and frame transmission line construction cost, improve transmission capacity, improving lightning withstand level, especially it is regional to gather at electric power transmission network, in limited corridor, use the utility model patented technology, building the common-tower double-return compact type transmission line is the preferred option that solves big transmission capacity, reduction building cost, improves lightning withstand level.
As mentioned above, the utility model provides a preferable novel electric power pylon structure, and relevant application, so offer patent application in accordance with the law; Yet, above implementation and graphic shown in, be this creation preferred embodiment, be not to limit to this creation with this, be with, approximate, identical with the structure of this creation, device, feature etc. such as, all should belong to founding within purpose and the claim of this creation.
Claims (5)
1, a kind of common-tower double-return shrunk type straight line electric power pylon, it includes body of the tower, tower head and lead, and the double loop conductor arrangement is characterized in that in the body of the tower both sides:
This tower head includes upper strata cross-arm and the lower floor's cross-arm that is distributed in the body of the tower both sides, the both ends of this upper strata cross-arm have hung a phase conductor by suspension insulator, this lower floor's cross-arm is a swallow formula folding arm structure, both ends at this lower floor's cross-arm have hung a phase conductor by suspension insulator, and have also hung a phase conductor by the V-type insulator string between the both ends of this lower floor's cross-arm and body of the tower.
2, common-tower double-return shrunk type straight line electric power pylon as claimed in claim 1, wherein this little tilting upward in cross-arm two ends, upper strata.
3, common-tower double-return shrunk type straight line electric power pylon as claimed in claim 1 or 2, wherein the both ends of this lower floor's cross-arm are 28.7m by the distance of going here and there between the lead that hangs of dangling.
4, common-tower double-return shrunk type straight line electric power pylon as claimed in claim 1 or 2, wherein this iron tower height is between 40m-50m.
5, common-tower double-return shrunk type straight line electric power pylon as claimed in claim 1 or 2, wherein this upper strata cross-arm and lower floor's cross-arm are to be symmetrically distributed in the body of the tower both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620118115 CN2909652Y (en) | 2006-05-31 | 2006-05-31 | Co-tower double-loop compact linear transmission pylon |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620118115 CN2909652Y (en) | 2006-05-31 | 2006-05-31 | Co-tower double-loop compact linear transmission pylon |
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| CN2909652Y true CN2909652Y (en) | 2007-06-06 |
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| CN 200620118115 Expired - Lifetime CN2909652Y (en) | 2006-05-31 | 2006-05-31 | Co-tower double-loop compact linear transmission pylon |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781937A (en) * | 2010-03-11 | 2010-07-21 | 同济大学 | Ice-resisting and strengthening reconstruction method of existing power transmission tower |
| CN101906894A (en) * | 2010-09-04 | 2010-12-08 | 江苏省电力公司无锡供电公司 | Narrow base tower for electricity transmission |
| CN101425665B (en) * | 2008-12-12 | 2011-04-06 | 西北电网有限公司 | Double triangle phase sequence common-tower common-window dual loop transmission line |
| CN101824930B (en) * | 2009-03-05 | 2011-06-22 | 福建省厦门电业局 | Operation method of 10kV common-pylon double-circuit line charged vertical pylon |
| CN102561785A (en) * | 2012-01-31 | 2012-07-11 | 浙江省电力设计院 | Four-circuit tower for straight power transmission lines |
| CN103046794A (en) * | 2012-12-27 | 2013-04-17 | 国核电力规划设计研究院 | Ultrahigh-voltage direct current crank arm tangent tower |
| CN103132765A (en) * | 2013-02-06 | 2013-06-05 | 广东天联电力设计有限公司 | Steel pipe pole for transmission lines |
| CN103726703A (en) * | 2013-11-22 | 2014-04-16 | 国家电网公司 | Alternating current extra-high voltage same-tower double-circuit tangent tower |
| CN103972835A (en) * | 2014-03-24 | 2014-08-06 | 王力 | Novel V-combination serial type transmission line tower |
| CN106099818A (en) * | 2016-08-15 | 2016-11-09 | 中国电力工程顾问集团西北电力设计院有限公司 | ± 1100kV direct current exchanges same tower wire arrangements structure with double back 330kV |
| CN107869271A (en) * | 2016-09-23 | 2018-04-03 | 国家电网公司 | Pyramidal structure of ± 1100kV the extra-high voltage direct-currents with 750kV ultrahigh-voltage alternating-currents circuit with tower |
| CN107869272A (en) * | 2016-09-23 | 2018-04-03 | 国家电网公司 | Tower of ± 800kV the extra-high voltage direct-currents with 330kV ultrahigh-voltage alternating-currents circuit with tower |
| CN109286168A (en) * | 2018-10-26 | 2019-01-29 | 国网浙江省电力有限公司经济技术研究院 | A kind of double outlet arrangements of substation's outgoing line interval double-layer frame |
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2006
- 2006-05-31 CN CN 200620118115 patent/CN2909652Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425665B (en) * | 2008-12-12 | 2011-04-06 | 西北电网有限公司 | Double triangle phase sequence common-tower common-window dual loop transmission line |
| CN101824930B (en) * | 2009-03-05 | 2011-06-22 | 福建省厦门电业局 | Operation method of 10kV common-pylon double-circuit line charged vertical pylon |
| CN101781937A (en) * | 2010-03-11 | 2010-07-21 | 同济大学 | Ice-resisting and strengthening reconstruction method of existing power transmission tower |
| CN101906894A (en) * | 2010-09-04 | 2010-12-08 | 江苏省电力公司无锡供电公司 | Narrow base tower for electricity transmission |
| CN102561785A (en) * | 2012-01-31 | 2012-07-11 | 浙江省电力设计院 | Four-circuit tower for straight power transmission lines |
| CN103046794A (en) * | 2012-12-27 | 2013-04-17 | 国核电力规划设计研究院 | Ultrahigh-voltage direct current crank arm tangent tower |
| CN103132765A (en) * | 2013-02-06 | 2013-06-05 | 广东天联电力设计有限公司 | Steel pipe pole for transmission lines |
| CN103726703A (en) * | 2013-11-22 | 2014-04-16 | 国家电网公司 | Alternating current extra-high voltage same-tower double-circuit tangent tower |
| CN103726703B (en) * | 2013-11-22 | 2016-04-13 | 国家电网公司 | A kind of alternating-current extra-high voltage one-tower double-circuit linear tower |
| CN103972835A (en) * | 2014-03-24 | 2014-08-06 | 王力 | Novel V-combination serial type transmission line tower |
| CN106099818A (en) * | 2016-08-15 | 2016-11-09 | 中国电力工程顾问集团西北电力设计院有限公司 | ± 1100kV direct current exchanges same tower wire arrangements structure with double back 330kV |
| CN107869271A (en) * | 2016-09-23 | 2018-04-03 | 国家电网公司 | Pyramidal structure of ± 1100kV the extra-high voltage direct-currents with 750kV ultrahigh-voltage alternating-currents circuit with tower |
| CN107869272A (en) * | 2016-09-23 | 2018-04-03 | 国家电网公司 | Tower of ± 800kV the extra-high voltage direct-currents with 330kV ultrahigh-voltage alternating-currents circuit with tower |
| CN109286168A (en) * | 2018-10-26 | 2019-01-29 | 国网浙江省电力有限公司经济技术研究院 | A kind of double outlet arrangements of substation's outgoing line interval double-layer frame |
| CN109286168B (en) * | 2018-10-26 | 2023-04-18 | 国网浙江省电力有限公司经济技术研究院 | Double-outlet arrangement mode of double-layer framework of outlet intervals of transformer substation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Owner name: NORTH CHINA ELECTRIC POWER DESIGN INSTITUTE ENGINE Free format text: FORMER OWNER: NORTH CHINA POWER ENGINEERING(BEIJING) CO.,LTD. Effective date: 20100504 |
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Free format text: CORRECT: ADDRESS; FROM: 100011 NO.24, A, HUANGSI STREET, XICHENG DISTRICT, BEIJING CITY TO: 100120 NO.24, A, HUANGSI STREET, XICHENG DISTRICT, BEIJING CITY |
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| TR01 | Transfer of patent right |
Effective date of registration: 20100504 Address after: 100120 Beijing city Xicheng District Street No. 24 Patentee after: North China Electric Power Design Institute of China Power Engineering Consulting Group Corporation Address before: 100011 Beijing city Xicheng District Street No. 24 Patentee before: North-China Power Engineering (Beijing) Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20070606 |
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| EXPY | Termination of patent right or utility model |