CN203924859U - Novel cat-head transmission tower shelf structure - Google Patents
Novel cat-head transmission tower shelf structure Download PDFInfo
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- CN203924859U CN203924859U CN201420345042.4U CN201420345042U CN203924859U CN 203924859 U CN203924859 U CN 203924859U CN 201420345042 U CN201420345042 U CN 201420345042U CN 203924859 U CN203924859 U CN 203924859U
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Abstract
The utility model relates to a kind of novel cat-head transmission tower shelf structure, comprise tower head, tower body and tower leg, described tower head by wire cross-arm, two limit wire cross-arms, two earth wire supports, on two, crank arm and two lower bent levers compositions, symmetrical connection on one cranks arm respectively in the below at described middle wire cross-arm two ends, the lower end of cranking arm on described is connected formation K type node with corresponding lower bent lever upper end, described lower bent lever middle part is the symmetrical outside horizontally extending limit wire cross-arm that connects respectively, described middle wire cross-arm two ends are the symmetrical earth wire support connecting in same level respectively, described earth wire support end is equipped with ground wire hanging point, described middle wire cross-arm two ends and corresponding on the joining place inner side of cranking arm be equipped with middle conducting wire hanging point, described tower leg adopts height to combine leg.The utlity model has the advantages such as earth wire support layout pattern is novel, tower head layout is compacter succinctly, " K " type design of node is optimized, anti-lightning strike performance is better, profile is more attractive in appearance, comprehensive economic index is more superior, protection of the environment.
Description
Technical field
The utility model relates to a kind of novel cat-head transmission tower shelf structure, belongs to field of electrical equipment.
Background technology
Conventionally the normal structural configuration pattern adopting of cathead pylon is shown in accompanying drawing 1, and this structural shape has following features:
(1) the conventional cathead pylon forms that adopt 3 phase conductors to be " I string " more, the residing window size of middle phase conductor is larger;
(2) earth wire support of independent cantilever: owing to being subject to the control of lead wire and earth wire wire spacing, often need earth wire support to extend upward, cause itself and wire cross-arm not on a horizontal plane, force transfer system complicates;
(3) on tower head, the height of " K " type node of lower bent lever joining place, in the middle position even on the lower side of window, causes the stressed posterior nodal point displacement of tower head bigger than normal;
(4), according to the requirement of < < 110kV-750kV overhead transmission line design specifications > > (GB50545-2010), conventional cathead pylon is conventionally not more than 10 ° by ground wire lightning protection angle and designs.
Utility model content
The shortcoming existing for conventional cathead pylon structure, the purpose of this utility model is to provide a kind of novel cat-head transmission tower shelf structure, and there has been larger improvement the aspects such as the stress performance of this structural shape, moulded, comprehensive economic index.
To achieve these goals, the technical solution of the utility model is: a kind of novel cat-head transmission tower shelf structure, comprise tower head, tower body and tower leg, described tower head by wire cross-arm, two limit wire cross-arms, two earth wire supports, on two, crank arm and two lower bent levers compositions, symmetrical connection on one cranks arm respectively in the below at described middle wire cross-arm two ends, the lower end of cranking arm on described is connected formation K type node with corresponding lower bent lever upper end, described lower bent lever middle part is the symmetrical outside horizontally extending limit wire cross-arm that connects respectively, described limit wire cross-arm end is equipped with limit conducting wire hanging point, two lower bent lever lower ends are all connected with tower body upper end, described tower body lower end is connected with tower leg upper end, described middle wire cross-arm two ends are the symmetrical earth wire support connecting in same level respectively, described earth wire support end is equipped with ground wire hanging point, described middle wire cross-arm two ends and corresponding on the joining place inner side of cranking arm be equipped with middle conducting wire hanging point, described tower leg adopts height to combine leg.
Further, phase transmission pressure during two middle conducting wire hanging points hang by V-type insulator string, each limit conducting wire hanging point hangs both sides phase transmission pressure by I type insulator string respectively.
Further, described tower body is isosceles trapezoid, and its upper end width is 2950mm.
Further, described height combination leg comprises any one or more in 3000mm tower leg, 4000mm tower leg, 5000mm tower leg, 6000mm tower leg, 7000mm tower leg, 8000mm tower leg and 9000mm tower leg.
Further, described height combination leg lower end Breadth Maximum is 8085mm.
Further, the horizontal range between two ground wire hanging points is 18500mm.
Further, the horizontal range between two limit conducting wire hanging points is 15400mm.
Further, the ground wire hanging point of the same side and the vertical distance between the conducting wire hanging point of limit are 11530mm.
Further, described limit conducting wire hanging point height is 33000mm.
Further, the ground wire lightning protection angle of described ground wire hanging point is-5 °.
Compare with conventional cathead pylon, the utlity model has following advantage:
(1) innovation earth wire support layout pattern: meeting under the prerequisite that electrical insulation coordinates and lightning Protection Design requires, by the global optimization of tower head, the earth wire support of new structure and middle wire cross-arm are in same level, with respect to traditional cathead pylon of choosing on earth wire support, this structural system Path of Force Transfer is more clear directly, effectively reduces the action effect of ground line load.
(2) tower head is arranged compacter, more succinct: insulator serial type adopts the pattern of " IVI ", adopts mutually " V " type string in, and limit adopts the pattern of " I " type string mutually; Because the angle of wind deflection of " V " type string is less with respect to " I " type string, this layout pattern effectively reduces the size of tower head middle window; Meeting under the prerequisite of monolithic stability and rigidity, optimizing the connecting elements that has reduced tower head, structural configuration is more succinct.
(3) optimize " K " type design of node: in the situation that tower head window overall dimension is constant, rationally raise the height of " K " type node, by facts have proved of Practical Project, this processing mode has effectively reduced node displacement in the horizontal direction, overcome traditional cathead pylon and easily produced the shortcoming of distortion at " K " Nodes, improved the safety of pylon.
(4) anti-lightning strike performance is better: with respect to 0 ° of lightning protection angle of conventional 500kV single loop shaft tower, novel cathead pylon structure ground wire lightning protection angle is designed by-5 °, has improved the resistance to thunderbolt level of transmission line of electricity.
(5) profile is more attractive in appearance: the novel cathead pylon after improving by optimization, and not only power transmission is more clear, tower head is compacter, and profile is also more attractive in appearance simultaneously.
(6) comprehensive economic index is more superior: reduced the height of earth wire support, effectively reduced the action effect of external load; By optimizing structure, arrange and tower head window size, reduced the quantity of tower head connecting elements, reduced the size of member; Optimize the internode height of the tower body gradient and main material; And then reached the object that reduces tower material weight and basic role power.
(7) protection of the environment: the design that height combines leg; avoided the discrepancy in elevation because of the massif gradient and column foot basal plane to cause near the destruction of vegetation a large amount of earthwork evacuation and tower position; protect natural landscape, reduced massif soil erosion, be also conducive to the safety and stability of column foot.
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Accompanying drawing explanation
Fig. 1 is the single line drawing of conventional cathead pylon.
Fig. 2 is the single line drawing of the utility model embodiment.
In figure: wire cross-arm in 1-; 2-limit wire cross-arm; 3-earth wire support, cranks arm on 4-, 5-lower bent lever; 6-tower body; 7-tower leg, A-limit conducting wire hanging point, B-ground wire hanging point; conducting wire hanging point in O-; horizontal range between two ground wire hanging points of D1-, the ground wire hanging point of D2-the same side and the vertical distance between the conducting wire hanging point of limit, the horizontal range between two limit conducting wire hanging points of D3-; T1-3000mm tower leg; T2-9000mm tower leg, H-limit conducting wire hanging point height, b1-tower body upper end width; b2-just combines leg lower end Breadth Maximum, θ-lightning protection angle.
The specific embodiment
As shown in Figure 2, a kind of novel cat-head transmission tower shelf structure, comprise tower head, tower body 6 and tower leg 7, described tower head by wire cross-arm 1, two limit wire cross-arms 2, two earth wire supports 3, 4 and two lower bent levers 5 of cranking arm on two form, symmetrical connection on one cranks arm 4 respectively in the below at described middle wire cross-arm 1 two ends, 4 lower ends of cranking arm on described are connected formation K type node with corresponding lower bent lever 5 upper ends, described lower bent lever 5 middle parts are the symmetrical outside horizontally extending limit wire cross-arm 2 that connects respectively, described limit wire cross-arm 2 ends are equipped with limit conducting wire hanging point A, two lower bent lever 5 lower ends are all connected with tower body 6 upper ends, described tower body 6 lower ends are connected with tower leg 7 upper ends, described middle wire cross-arm 1 two ends are the symmetrical earth wire support 3 connecting in same level respectively, described earth wire support 3 ends are equipped with ground wire hanging point B, described middle wire cross-arm 1 two ends and corresponding on 4 the joining place inner side of cranking arm be equipped with middle conducting wire hanging point O, described tower leg 7 adopts height to combine leg.
In the present embodiment, phase transmission pressure during two middle conducting wire hanging point O hang by V-type insulator string, each limit conducting wire hanging point A hangs both sides phase transmission pressure by I type insulator string respectively.This layout pattern effectively reduces the size of tower head middle window; Meeting under the prerequisite of monolithic stability and rigidity, optimizing the connecting elements that has reduced tower head, structural configuration is more succinct.
In the present embodiment, described tower body 6 is isosceles trapezoid, and its upper end width b1 is 2950mm.Described height combination leg comprises any one or more in 3000mm tower leg T1,4000mm tower leg, 5000mm tower leg, 6000mm tower leg, 7000mm tower leg, 8000mm tower leg and 9000mm tower leg T2.When whole employing 9000mm tower leg T2, described height combination leg lower end Breadth Maximum b2 is 8085mm.
In the present embodiment, horizontal range D1 between two ground wire hanging point B is 18500mm, horizontal range D3 between two limit conducting wire hanging point A is 15400mm, vertical distance D2 between the ground wire hanging point B of the same side and limit conducting wire hanging point A is 11530mm, and described limit conducting wire hanging point A height H is 33000mm.
In the present embodiment, the ground wire lightning protection angle θ of described ground wire hanging point B is-5 °, and with respect to 0 ° of lightning protection angle of conventional 500kV single loop shaft tower, the present invention has improved the resistance to thunderbolt level of transmission line of electricity.
This pylon is applicable to 500kV electric pressure list back transmission line; for example: concrete name is called 5DZMV262; design basic wind speed is V=28 meter per second; icing C=10mm, the design corner number of degrees are 0 °, wire adopts 4*LGJ-630/45(safety factor 2.5); ground wire adopts JLB40-150(safety factor 3.0); lightning protection angle is by-5 ° of designs, 450 meters of design level spans, 800 meters of vertical spans.
The foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (10)
1. a novel cat-head transmission tower shelf structure, comprise tower head, tower body and tower leg, described tower head by wire cross-arm, two limit wire cross-arms, two earth wire supports, on two, crank arm and two lower bent levers compositions, symmetrical connection on one cranks arm respectively in the below at described middle wire cross-arm two ends, the lower end of cranking arm on described is connected formation K type node with corresponding lower bent lever upper end, described lower bent lever middle part is the symmetrical outside horizontally extending limit wire cross-arm that connects respectively, described limit wire cross-arm end is equipped with limit conducting wire hanging point, two lower bent lever lower ends are all connected with tower body upper end, described tower body lower end is connected with tower leg upper end, it is characterized in that: described middle wire cross-arm two ends are the symmetrical earth wire support connecting in same level respectively, described earth wire support end is equipped with ground wire hanging point, described middle wire cross-arm two ends and corresponding on the joining place inner side of cranking arm be equipped with middle conducting wire hanging point, described tower leg adopts height to combine leg.
2. novel cat-head transmission tower shelf structure according to claim 1, is characterized in that: phase transmission pressure during two middle conducting wire hanging points hang by V-type insulator string, each limit conducting wire hanging point hangs both sides phase transmission pressure by I type insulator string respectively.
3. novel cat-head transmission tower shelf structure according to claim 1, is characterized in that: described tower body is isosceles trapezoid, and its upper end width is 2950mm.
4. novel cat-head transmission tower shelf structure according to claim 1, is characterized in that: described height combination leg comprises any one or more in 3000mm tower leg, 4000mm tower leg, 5000mm tower leg, 6000mm tower leg, 7000mm tower leg, 8000mm tower leg and 9000mm tower leg.
5. novel cat-head transmission tower shelf structure according to claim 4, is characterized in that: described height combination leg lower end Breadth Maximum is 8085mm.
6. novel cat-head transmission tower shelf structure according to claim 1, is characterized in that: the horizontal range between two ground wire hanging points is 18500mm.
7. novel cat-head transmission tower shelf structure according to claim 1, is characterized in that: the horizontal range between two limit conducting wire hanging points is 15400mm.
8. novel cat-head transmission tower shelf structure according to claim 1, is characterized in that: ground wire hanging point and the vertical distance between the conducting wire hanging point of limit of the same side are 11530mm.
9. novel cat-head transmission tower shelf structure according to claim 1, is characterized in that: described limit conducting wire hanging point height is 33000mm.
10. novel cat-head transmission tower shelf structure according to claim 1, is characterized in that: the ground wire lightning protection angle of described ground wire hanging point is-5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345042.4U CN203924859U (en) | 2014-06-26 | 2014-06-26 | Novel cat-head transmission tower shelf structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345042.4U CN203924859U (en) | 2014-06-26 | 2014-06-26 | Novel cat-head transmission tower shelf structure |
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| CN203924859U true CN203924859U (en) | 2014-11-05 |
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| CN201420345042.4U Expired - Fee Related CN203924859U (en) | 2014-06-26 | 2014-06-26 | Novel cat-head transmission tower shelf structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484554A (en) * | 2016-01-06 | 2016-04-13 | 国网浙江省电力公司湖州供电公司 | High-voltage staggered-layer penetrating and crossing tower |
| CN105545061A (en) * | 2015-12-24 | 2016-05-04 | 广东迪生电力钢构器材有限公司 | Novel power transmission tower capable of achieving safe and convenient construction |
| CN105625792A (en) * | 2015-12-24 | 2016-06-01 | 广东迪生电力钢构器材有限公司 | Novel power transmission tower provided with falling-preventing structure |
| CN106555501A (en) * | 2016-09-26 | 2017-04-05 | 安徽华电工程咨询设计有限公司 | A kind of cat-head transmission tower suitable for single time overhead transmission line cable T joint |
| CN106567603A (en) * | 2016-10-27 | 2017-04-19 | 中国电力工程顾问集团西北电力设计院有限公司 | 750 kV wine glass composite cross arm tower |
| CN111519970A (en) * | 2020-04-28 | 2020-08-11 | 广东电网有限责任公司揭阳供电局 | 220kV transmission line single-loop iron tower |
| CN115126325A (en) * | 2022-05-27 | 2022-09-30 | 国网甘肃省电力公司电力科学研究院 | Cat-head tower of overhead transmission line and middle-phase transformation method of cat-head tower |
-
2014
- 2014-06-26 CN CN201420345042.4U patent/CN203924859U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545061A (en) * | 2015-12-24 | 2016-05-04 | 广东迪生电力钢构器材有限公司 | Novel power transmission tower capable of achieving safe and convenient construction |
| CN105625792A (en) * | 2015-12-24 | 2016-06-01 | 广东迪生电力钢构器材有限公司 | Novel power transmission tower provided with falling-preventing structure |
| CN105484554A (en) * | 2016-01-06 | 2016-04-13 | 国网浙江省电力公司湖州供电公司 | High-voltage staggered-layer penetrating and crossing tower |
| CN106555501A (en) * | 2016-09-26 | 2017-04-05 | 安徽华电工程咨询设计有限公司 | A kind of cat-head transmission tower suitable for single time overhead transmission line cable T joint |
| CN106567603A (en) * | 2016-10-27 | 2017-04-19 | 中国电力工程顾问集团西北电力设计院有限公司 | 750 kV wine glass composite cross arm tower |
| CN111519970A (en) * | 2020-04-28 | 2020-08-11 | 广东电网有限责任公司揭阳供电局 | 220kV transmission line single-loop iron tower |
| CN111519970B (en) * | 2020-04-28 | 2022-01-25 | 广东电网有限责任公司揭阳供电局 | 220kV transmission line single-loop iron tower |
| CN115126325A (en) * | 2022-05-27 | 2022-09-30 | 国网甘肃省电力公司电力科学研究院 | Cat-head tower of overhead transmission line and middle-phase transformation method of cat-head tower |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 350108, 3, hi tech Avenue, science and Technology Park, science and Technology East Road, Fuzhou Town, Minhou County, Fujian, China Patentee after: FUJIAN YONGFU POWER ENGINEERING Co.,Ltd. Patentee after: STATE GRID FUJIAN ECONOMIC Research Institute Address before: 350108, 3, hi tech Avenue, science and Technology Park, science and Technology East Road, Fuzhou Town, Minhou County, Fujian, China Patentee before: FUJIAN YONGFU PROJECT CONSULTANT Co.,Ltd. Patentee before: STATE GRID FUJIAN ECONOMIC Research Institute |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |