CN201360131Y - High-voltage electric power pole tower - Google Patents
High-voltage electric power pole tower Download PDFInfo
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- CN201360131Y CN201360131Y CNU2009201367188U CN200920136718U CN201360131Y CN 201360131 Y CN201360131 Y CN 201360131Y CN U2009201367188 U CNU2009201367188 U CN U2009201367188U CN 200920136718 U CN200920136718 U CN 200920136718U CN 201360131 Y CN201360131 Y CN 201360131Y
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Abstract
The utility model relates to an electric power pole tower, in particular to a high-voltage electric power pole tower, the structural key point of which lies in that: a tower head is vertically provided and distributed with five layers of cross arms which are symmetrical on the left and the right from top to bottom, a dual-loop circuit with higher voltage grade spans over the upper two layers of cross arms, and a four-loop circuit with lower voltage grade spans over the lower three layers of cross arms. The utility model has the advantages that a high-voltage electric power pole tower with six loops erected on one tower is provided, therefore, the high-voltage electric power pole tower is far ahead in the aspect of delivery capacity of a unit corridor, the electric power delivery capacity is greatly improved, and the electric power delivery capacity of the corridor of a unit circuit is improved by more than 22 percent; as the number of tower positions is reduced to only one third of that of the conventional dual-loop, the land resources are saved, and the utilization rate of the land resources is significantly improved. In addition, the high-voltage electric power pole tower provides an unexpected technical effect, namely, the walking distance for conventional inspection by an inspector is reduced, and the working time can be reduced by half at least deducting that the coefficient of overhauling difficulty is increased due to the erection of six loops on the same tower when large-scale inspection is conducted every three year.
Description
Technical field
The utility model relates to a kind of electric force pole tower, particularly a kind of high-tension electricity shaft tower.
Background technology
Electric force pole tower of the prior art mostly is the double loop greatly to four circuit pole tower, when building, need consider the trend and the safe distance of circuit, comprise distance between the shaft tower and the distance between the circuit, so when the multiloop power construction, just need to increase the quantity of shaft tower, also valuable land resource has been proposed bigger requirement simultaneously.Yet near the comparatively intensive location of population, more to the quantitative requirement in electric power transfer loop, and land resource is quite limited, original double loop, even the design of four circuit pole tower has been difficult to satisfy above-mentioned designing requirement.
Invention constitutes
The purpose of this utility model is to provide a kind of high-tension electricity shaft tower that transmits six loop line roads and economize the land resource according to the deficiencies in the prior art part.
The utility model is realized by following approach:
The high-tension electricity shaft tower, include tower head and body of the tower, tower head is installed in the body of the tower top, its structural feature is, on the tower head from top to bottom vertical arrangement be distributed with symmetrical five layers of cross-arm, set up the circuit of double loop high voltage grade on the two-layer cross-arm in top, set up the loop of four loop low voltage grades on the three layers of cross-arm in below.
This is a kind of high-tension electricity shaft tower of six loop wiring on the same tower circuits, from the double loop, six loop wiring on the same tower are developed in four loops, at first importantly to carry out series of analysis and calculating to the lightning protection properties of tower, because the circuit that has two different electric pressures on the electric force pole tower of the described six loop wiring on the same tower of the utility model, therefore if attacking cat head directly, thunder and lightning causes tripping operation, it is minimum that low voltage grade circuit is gone up the lightning withstand level that insulate mutually most, thereby will at first breakdownly cause tripping operation, so, the breakdown phase conductor of the circuit of low voltage grade is for high voltage grade circuit, be equivalent to shielding conductor, therefore increased the coupling coefficient of high voltage grade circuit, reduce the accumulative total trip-out rate of high voltage grade circuit, thereby guaranteed the lightning protection properties of whole tower.So just, can tentatively realize the technical scheme of the high-tension electricity shaft tower of six loop wiring on the same tower, also need the version of a large amount of assay optimization tower heads in addition, make that the structure stress of shaft tower is reasonable, have better security reliability and economy.
The advantage of the high-tension electricity shaft tower of six loop wiring on the same tower is: it can transmit six return leads simultaneously, and is leading greatly aspect the conveying capacity of unit corridor, and the electric power transmission capacity also greatly improves, and unit line corridor ability to transmit electricity has improved more than 22%; Because the minimizing of tower position has only conventional two circuit three minutes one, has therefore saved land resource, has significantly improved the land resources utilization rate.The utility model also brings a unexpected technique effect in addition, promptly reduced the mileage of walking that fortune inspection personnel routine is patrolled and examined, can can reduce the operating time of half at least because outside the six loop wiring on the same tower maintenance degree-of-difficulty factors increases when deducting because of once big inspection in 3 years.
The utility model can further be specially:
The structure that the circuit of double loop high voltage grade is a kind of delta arrangement hangs on the upper two layers cross-arm.
Each route road once, the cross-arm both sides of symmetry, there is three-phase conducting wire on each loop line road, can be that top one deck hangs a phase circuit, below one deck hangs the two-phase circuit, also can be conversely, and top one deck hangs two-phase, below one deck hangs a phase circuit, makes three-phase line be triangularly arranged.
The structure that the circuit of four loop low voltage grades is vertical arrangement hangs on following three layers of cross-arm.
During arrangement, the circuit of the two loop low voltage grades that respectively distribute about cross-arm, like this, on three layers of cross-arm, the right and left of every layer hangs two circuits below the tower head.
The high-tension electricity shaft tower of six loop wiring on the same tower is as a kind of tangent tower, and its insulator string is a kind of V-arrangement insulator string.
When the high-tension electricity shaft tower of six loop wiring on the same tower as a kind of strain tower, its insulator string is the anti-windage yaw wire jumper string of a kind of column support type composite insulator.
Can compress the various sizes of tower head so as much as possible, thus effectively the control circuit width of corridor, reduce the external load effect, reduce tower consumption steel index.
In sum, the utility model provides a kind of high-tension electricity shaft tower of six loop wiring on the same tower, and it can transmit six return leads simultaneously, and is leading greatly aspect the conveying capacity of unit corridor, the electric power transmission capacity also greatly improves, and unit line corridor ability to transmit electricity has improved more than 22%; Because the minimizing of tower position has only conventional two circuit three minutes one, has therefore saved land resource, has significantly improved the land resources utilization rate.The utility model also brings a unexpected technique effect in addition, promptly reduced the mileage of walking that fortune inspection personnel routine is patrolled and examined, can can reduce the operating time of half at least because outside the six loop wiring on the same tower maintenance degree-of-difficulty factors increases when deducting because of once big inspection in 3 years.
Description of drawings
Figure 1 shows that the structural representation of high-tension electricity shaft tower described in the utility model;
Below in conjunction with embodiment the utility model is described further.
Specific embodiment
Most preferred embodiment:
With reference to accompanying drawing 1, a certain location, area, Fujian is newly-built 220kV circuit, length overall 21.5km.Circuit near following Lu hole near 3.8 kilometers high-tension electricity shaft tower (2 times 220kV that the adopt six loop wiring on the same tower hilllock, Mashan, 4 times 110kV) set up, the remainder circuit adopts the double loop wiring on the same tower, all employing synthetic insulators of strain insulator-string that dangle, and wire jumper adopts post insulator.
The high-tension electricity shaft tower of six loop wiring on the same tower includes tower head 1 and body of the tower 2, and tower head 1 is installed in body of the tower 2 tops, on the tower head 1 from top to bottom vertical arrangement be distributed with symmetrical five layers of cross-arm 3.2 times 220kV circuits are that V string delta arrangement hangs on the upper two layers cross-arm, and 4 times 110kV circuits are arranged by the sustained height near normal and hung on following three layers of cross-arm.
It is domestic that six loop sections are positioned at the development zone, and the development zone land price was 1,000,000 yuan/mu in 2007, so Path selection must effectively be utilized corridor, mountain region resource unique in this district.If do not adopt six loop wiring on the same tower, then other four times palpuses take (setting up by the double loop) 172 mu of soils through the development zone more, and the soil market price reaches 1.72 hundred million yuans, and this expense does not also comprise because of electric power corridor reason and causes the imperfect loss that causes in plot.
After adopting the high-tension electricity shaft tower of six loop wiring on the same tower, the circuit width of corridor is compressed to the about 20m in tower six loops from three about 160m in double loop of routine.Not only saved valuable land resource, simultaneously, compared to 220kV circuit corridor, former double loop, six loops are also holding a safe lead aspect the conveying capacity of unit corridor.Common 400 lead 220kV double loop power transmission engineering transmission capacities are 552MW, the circuit width of corridor is 60 meters, unit line corridor ability to transmit electricity is 9.2MW/m, and this engineering adopt 220kV two return with 110kV four times with behind the tower, transmission capacity increases to 809MW, and the circuit width of corridor is 72 meters, and unit line corridor ability to transmit electricity is 11.2MW/m, unit line corridor ability to transmit electricity has improved 22%, has improved the effective rate of utilization of land resource by a relatively large margin.Since the tower position have only that conventional double loop sets up 1/3, significantly reduced the mileage of walking that fortune inspection personnel routine is patrolled and examined, deduction overhauls outside the degree-of-difficulty factor increase because of six loops during because of once big inspection in 3 years, can save half the time at least.
The high-tension electricity shaft tower of six loop wiring on the same tower; adopted " sacrificing the lightning protection method of low-voltage grade " to take shelter from the thunder; the maximum tower height of six loop tangent towers is 67.3m; compare the big leap tangent tower of 220kV/110kV; not too high; therefore select appropriate insulation length, line lightning resisting level can be not poorer than general big span line.For further improving lightning withstand level, can take to reduce measures such as six loop tower impulse earthed resistance values with six times sections of tower.
It is same as the prior art that the utility model is not stated part.
Claims (5)
1, high-tension electricity shaft tower, include tower head and body of the tower, tower head is installed in the body of the tower top, it is characterized in that, on the tower head from top to bottom vertical arrangement be distributed with symmetrical five layers of cross-arm, set up the circuit of double loop high voltage grade on the two-layer cross-arm in top, set up the loop of four loop low voltage grades on the three layers of cross-arm in below.
2, high-tension electricity shaft tower according to claim 1 is characterized in that, the structure that the circuit of double loop high voltage grade is a kind of delta arrangement hangs on the upper two layers cross-arm.
3, high-tension electricity shaft tower according to claim 1 is characterized in that, the structure that the circuit of four loop low voltage grades is vertical arrangement hangs on following three layers of cross-arm.
4, high-tension electricity shaft tower according to claim 1 is characterized in that, the high-tension electricity shaft tower of six loop wiring on the same tower is as a kind of tangent tower, and its insulator string is a kind of V-arrangement insulator string.
5, high-tension electricity shaft tower according to claim 1 is characterized in that, the high-tension electricity shaft tower of six loop wiring on the same tower is as a kind of strain tower, and its insulator string is the anti-windage yaw wire jumper string of a kind of column support type composite insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201367188U CN201360131Y (en) | 2009-02-16 | 2009-02-16 | High-voltage electric power pole tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201367188U CN201360131Y (en) | 2009-02-16 | 2009-02-16 | High-voltage electric power pole tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201360131Y true CN201360131Y (en) | 2009-12-09 |
Family
ID=41425896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201367188U Expired - Lifetime CN201360131Y (en) | 2009-02-16 | 2009-02-16 | High-voltage electric power pole tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201360131Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362343A (en) * | 2013-07-04 | 2013-10-23 | 国家电网公司 | Same-tower six-loop tower |
| CN104895390A (en) * | 2015-03-27 | 2015-09-09 | 国核电力规划设计研究院 | A linear tower |
| CN105952238A (en) * | 2016-04-29 | 2016-09-21 | 邹平县供电公司 | Novel high voltage transmission line tower based on power supply construction system |
-
2009
- 2009-02-16 CN CNU2009201367188U patent/CN201360131Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362343A (en) * | 2013-07-04 | 2013-10-23 | 国家电网公司 | Same-tower six-loop tower |
| CN103362343B (en) * | 2013-07-04 | 2015-09-09 | 国家电网公司 | A kind of with tower six circuit pole tower |
| CN104895390A (en) * | 2015-03-27 | 2015-09-09 | 国核电力规划设计研究院 | A linear tower |
| CN105952238A (en) * | 2016-04-29 | 2016-09-21 | 邹平县供电公司 | Novel high voltage transmission line tower based on power supply construction system |
| CN105952238B (en) * | 2016-04-29 | 2017-02-08 | 邹平县供电公司 | Novel high voltage transmission line tower based on power supply construction system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 350108, 3, hi tech Avenue, Haixi Science Park, Fuzhou Town, Minhou County, Fujian, China Patentee after: FUJIAN YONGFU POWER ENGINEERING CO., LTD. Patentee after: Fujian Yongfu Iron Tower Technology Development Co., Ltd. Patentee after: Chen Qiang Address before: 350003 Gulou District, Fujian, Fuzhou No. 54 Road, No. 268 Patentee before: Fujian Yong Fu Project Consultant Co., Ltd. Patentee before: Fujian Yongfu Iron Tower Technology Development Co., Ltd. Patentee before: Chen Qiang |
|
| CX01 | Expiry of patent term |
Granted publication date: 20091209 |
|
| CX01 | Expiry of patent term |