CN207847235U - No ground pole DC transmission line line pole tower - Google Patents
No ground pole DC transmission line line pole tower Download PDFInfo
- Publication number
- CN207847235U CN207847235U CN201820056602.2U CN201820056602U CN207847235U CN 207847235 U CN207847235 U CN 207847235U CN 201820056602 U CN201820056602 U CN 201820056602U CN 207847235 U CN207847235 U CN 207847235U
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- arm
- cross
- polar conductor
- metallic return
- tie point
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Abstract
The utility model discloses a kind of no ground pole DC transmission line line pole towers, are related to a kind of structure of electric wire line pole tower.It includes tower body, polar conductor cross-arm and metallic return cross-arm, and polar conductor cross-arm and the tie point of tower body lower end are the first tie point, and polar conductor cross-arm lower end is provided with polar conductor insulator chain；Polar conductor insulator chain is V-shaped, and one end of polar conductor insulator chain is connect with tie point, and the other end is connect with the vacant end of polar conductor cross-arm, and the bottom of polar conductor insulator chain is connected with polar conductor；Metallic return cross-arm is connected with earth wire support, and earth wire support and the tie point of metallic return cross-arm lower end are the second tie point, and metallic return insulator chain is connect with the second tie point, and metallic return is hung on by metallic return insulator chain below the second tie point.The utility model makes full use of line corridor and steel tower, plays the role of Economization on land occupancy and cost saving, with good economic efficiency and social benefit.
Description
Technical field
The utility model is related to a kind of structures of electric wire line pole tower, more specifically a kind of its no ground pole direct current transportation
Overhead line structures.
Background technology
Currently, China's bipolar direct current transmission system mostly carries mating earthing pole and ground electrode circuit, utilize when necessary
The earth forms the monopolar ground return method of operation to improve reliability and the flexibility of DC transmission system for circuit.Monopole the earth
Although loop line mode track investment relatively saves, to the more demanding of earthing pole addressing.In addition, monopolar ground return is run
When, have larger DC current grounded pole injection the earth, if pole location nearby have the substation that transformer neutral point is grounded,
The metallic facilities such as lower metallic conduit or armored cable, earth current may bring harmful effect to these facilities.
With the fast development of Chinese society economy and power grid construction, for System for HVDC System Earth Pole pole location and
The land resource growing tension that ground electrode circuit uses, environment caused by earth electrode field and line project influences, social stability
The problems such as also get growing concern for.Especially extra-high voltage direct-current transmission technology is quickly grown in recent years, and earthing pole enters
Earth-current is continuously improved, and the selection of pole location is more difficult.In individual extra-high voltage direct-current transmission engineering design phases, earth electrode field
The restraining factors even as entire DC transmission engineering are selected with line route.
In view of the above-mentioned problems, it is a feasible selection to replace earthing pole using metallic return.Domestic part existing at present
DC transmission engineering uses the scheme of ground connection polar curve and polar conductor wiring on the same tower near current conversion station, for no ground pole direct current
Transmission line of electricity refers to.But it since the running parameter of metallic return relatively ground connection polar curve has larger difference, needs to be further studied.
Based on above-mentioned analysis, it is necessary to which research is a kind of to be used for no ground pole DC power transmission line, the shaft tower of economical rationality.
Invention content
The purpose of this utility model is to overcome the shortcomings of above-mentioned background technology, and provide a kind of no ground extremely straight
Flow electric power line pole tower.
To achieve the goals above, the technical solution of the utility model is：No ground pole DC transmission line line pole tower, it is special
Sign is：It is set to the polar conductor cross-arm of tower body middle and upper part left and right ends and horizontally disposed and tower body including tower body, horizontal symmetrical
The metallic return cross-arm at top, the tie point of the polar conductor cross-arm and tower body lower end are the first tie point, under polar conductor cross-arm
End is provided with polar conductor insulator chain；The polar conductor insulator chain is V-shaped, and one end and the tie point of polar conductor insulator chain connect
It connects, the other end is connect with the vacant end of polar conductor cross-arm, and the bottom of polar conductor insulator chain is connected with polar conductor；The metal returns
The left and right ends of line cross-arm are connected with earth wire support, and earth wire support is an integral structure with metallic return cross-arm, earth wire support with
The tie point of metallic return cross-arm lower end is the second tie point, and metallic return insulator chain is connect with the second tie point, and metal returns
Line is hung on by metallic return insulator chain below the second tie point；The metallic return is arranged with polar conductor with tower；It is described
The distance L1 at polar conductor cross-arm to metallic return cross-arm midpoint is 19.13m, metallic return cross-arm to metallic return cross-arm midpoint
Distance L2 is 6m, and the distance L3 of earth wire support to metallic return cross-arm midpoint is 11.34m, and metallic return cross-arm is horizontal with polar conductor
Interlamellar spacing H between load is 8m.
Compared with prior art, the beneficial effects of the utility model are as follows：
1) the utility model metallic return is arranged with polar conductor with tower, can be made full use of line corridor and steel tower, be played section
The about effect of land seizure and cost saving；
2) metallic return is arranged in above polar conductor by the utility model, convenient for being handed over the transmission line of electricity of other voltage class
Fork, is conducive to the overall planning of power transmission line corridor；
3) metallic return is arranged in above polar conductor by the utility model can effectively reduce the high over the ground of polar conductor cross-arm
Degree, advantageously reduces shaft tower center of gravity, not only increases the reliability of shaft tower, and the resistance to thunder for improving polar conductor is horizontal, also helps
Reduce shaft tower weight.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is the utility model dimensional drawing.
In figure, 1- tower bodies, the first tie points of 1a-, 2- polar conductor cross-arms, 3- metallic return cross-arms, the second tie points of 3a-,
4- polar conductor insulator chains, 5- polar conductors, 6- earth wire supports, 7- metallic return insulator chains, 8- metallic returns.
Specific implementation mode
The performance that according to the present invention will be described in detail below with reference to the accompanying drawings, but they are not constituted to the utility model
It limits, it is only for example.The advantages of making the utility model by explanation simultaneously, will become clearer and be readily appreciated that.
Refering to known to attached drawing：No ground pole DC transmission line line pole tower, including tower body 1, horizontal symmetrical are set in tower body 1
The polar conductor cross-arm 2 of top left and right ends and the horizontally disposed metallic return cross-arm 3 with 1 top of tower body, the polar conductor cross-arm 2
Tie point with 1 lower end of tower body is the first tie point 1a, and 2 lower end of polar conductor cross-arm is provided with polar conductor insulator chain 4；The pole
Wire insulation substring 4 is V-shaped, and one end of polar conductor insulator chain 4 is connect with tie point 1a, the other end and polar conductor cross-arm 2
Vacant end connection, the bottom of polar conductor insulator chain 4 is connected with polar conductor 5；The left and right ends of the metallic return cross-arm 3 connect
There are earth wire support 6, earth wire support 6 to be an integral structure with metallic return cross-arm 3, earth wire support 6 and 3 lower end of metallic return cross-arm
Tie point be the second tie point 3a, metallic return insulator chain 7 connect with the second tie point 3a, and metallic return 8 passes through metal
Loop line insulator chain 7 is hung below the second tie point 3a；The metallic return 8 is arranged with polar conductor 5 with tower；The polar conductor
The distance L1 at cross-arm 2 to 3 midpoint of metallic return cross-arm is 19.13m, metallic return cross-arm 3 to metallic return cross-arm 3 midpoint away from
It is 6m from L2, the distance L3 of earth wire support 6 to 3 midpoint of metallic return cross-arm is 11.34m, and metallic return cross-arm 3 is horizontal with polar conductor
Interlamellar spacing H between load 2 is 8m (as depicted in figs. 1 and 2).
In actual use, the utility model arranges metallic return 8 and polar conductor 5 with tower, can make full use of line corridor
And steel tower, play the role of Economization on land occupancy and cost saving；Because metallic return 8 need to be along DC line all fronts frame
Line, the more conventional ground electrode circuit of wiring on the same tower length dramatically increase；Metallic return 8 is arranged in 5 top of polar conductor, convenient for processing
With intersecting for other voltage class circuits；Metallic return 8, which is arranged in 5 top of polar conductor, can effectively reduce polar conductor cross-arm
Distance away the ground advantageously reduces shaft tower center of gravity, not only increases the reliability of shaft tower, and the resistance to thunder for improving polar conductor 5 is horizontal, also
Advantageously reduce shaft tower weight；When the utility model line crossing is non-resident and forest zone, the distance away the ground of polar conductor cross-arm 2 is more existing
There is shaft tower scheme (metallic return is arranged in below polar conductor) that 3m and 6m can be reduced respectively.
Other unaccounted parts belong to the prior art.
Claims (1)
1. no ground pole DC transmission line line pole tower, it is characterised in that：It is set in tower body (1) including tower body (1), horizontal symmetrical
The polar conductor cross-arm (2) of top left and right ends and the horizontally disposed metallic return cross-arm (3) at the top of tower body (1), the pole is led
Line cross-arm (2) and the tie point of tower body (1) lower end are the first tie point (1a), and polar conductor cross-arm (2) lower end is provided with polar conductor
Insulator chain (4)；The polar conductor insulator chain (4) is V-shaped, and one end and the tie point (1a) of polar conductor insulator chain (4) connect
It connects, the other end is connect with the vacant end of polar conductor cross-arm (2), and the bottom of polar conductor insulator chain (4) is connected with polar conductor (5)；
The left and right ends of the metallic return cross-arm (3) are connected with earth wire support (6), and earth wire support (6) is with metallic return cross-arm (3)
The tie point of integral structure, earth wire support (6) and metallic return cross-arm (3) lower end is the second tie point (3a), metallic return
Insulator chain (7) is connect with the second tie point (3a), and metallic return (8) hangs on second by metallic return insulator chain (7)
Below tie point (3a)；The metallic return (8) is arranged with polar conductor (5) with tower；The polar conductor cross-arm (2) arrives metallic return
The distance L1 at cross-arm (3) midpoint is 19.13m, and the distance L2 of metallic return cross-arm (3) to metallic return cross-arm (3) midpoint is 6m,
The distance L3 at earth wire support (6) to metallic return cross-arm (3) midpoint is 11.34m, metallic return cross-arm (3) and polar conductor cross-arm
(2) the interlamellar spacing H between is 8m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820056602.2U CN207847235U (en) | 2018-01-12 | 2018-01-12 | No ground pole DC transmission line line pole tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820056602.2U CN207847235U (en) | 2018-01-12 | 2018-01-12 | No ground pole DC transmission line line pole tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207847235U true CN207847235U (en) | 2018-09-11 |
Family
ID=63414381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820056602.2U Active CN207847235U (en) | 2018-01-12 | 2018-01-12 | No ground pole DC transmission line line pole tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207847235U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922433A (en) * | 2021-03-31 | 2021-06-08 | 中国能源建设集团湖南省电力设计院有限公司 | Improved generation flexible direct current transmission line tangent tower |
| CN112942953A (en) * | 2021-03-31 | 2021-06-11 | 中国能源建设集团湖南省电力设计院有限公司 | Lead, direct current earthing pole circuit tangent tower that ground wire combines |
-
2018
- 2018-01-12 CN CN201820056602.2U patent/CN207847235U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922433A (en) * | 2021-03-31 | 2021-06-08 | 中国能源建设集团湖南省电力设计院有限公司 | Improved generation flexible direct current transmission line tangent tower |
| CN112942953A (en) * | 2021-03-31 | 2021-06-11 | 中国能源建设集团湖南省电力设计院有限公司 | Lead, direct current earthing pole circuit tangent tower that ground wire combines |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |