CN201908471U - Tangent tower for electric transmission line - Google Patents
Tangent tower for electric transmission line Download PDFInfo
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- CN201908471U CN201908471U CN2010206914297U CN201020691429U CN201908471U CN 201908471 U CN201908471 U CN 201908471U CN 2010206914297 U CN2010206914297 U CN 2010206914297U CN 201020691429 U CN201020691429 U CN 201020691429U CN 201908471 U CN201908471 U CN 201908471U
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Abstract
The utility model discloses a tangent tower for an electric transmission line. The tangent tower can further reduce the cost and comprises a tower head and at least one group of cross arms sequentially arranged from the tower head down. Each group of cross arms comprises three layers of cross arms, namely an upper cross arm layer, a middle cross arm layer and a lower cross arm layer; insulator strings of the upper cross arm layer and the lower cross arm layer adopt an I-string line hanging manner; and the insulator string of the middle cross arm layer adopts a V-string line hanging manner and an IVI layout is called for short. The tangent tower adopting the IVI layout facilitates the reduction of a line corridor width of the tangent tower and the alleviation of the tower weight, is suitable for house density area, and reduces both the removal of houses and the effects of the electric transmission line on the ecological environment.
Description
Technical field
The utility model relates to a kind of tangent tower that is used for transmission line of electricity.
Background technology
At present, the four floor cross-arm type towers of the many employings of the common-tower double-return road tangent tower pattern of 500kV transmission line of electricity both at home and abroad, three layers of cross-arm type tower and two layers of cross-arm butterfly type tower, wherein, three layers of cross-arm type tower are to use the most general tower in the practice, adopt the mode of lead vertical arrangement, it is made up of tower body and tower head, described tower head is positioned at the tower body top, be disposed with the upper strata cross-arm downwards from tower head, middle level cross-arm and lower floor's cross-arm, each layer cross-arm is made of two angular support frames that are symmetrical set, be positioned at the electric wire that one group of three layers of support of tower body homonymy are used for same loop and fix, so be called the common-tower double-return road.The hanging wire position of middle level cross-arm is called the hyperbola tower in the inboard of levels cross-arm hanging wire position line; The hanging wire position of middle level cross-arm is called the cydariform tower in the outside of levels cross-arm hanging wire position line.
At present, three layers of cross-arm tangent tower of domestic 500kV common-tower double-return line conductor vertical arrangement, wire insulation substring arrangement has two kinds: " 6I " string or " 6V " string." 6I " string hanging wire mode is that all cross-arms only have a string insulator string by cross-arm to the hanging wire position; " 6V " string hanging wire mode is all cross-arms has a string insulator string respectively to the hanging wire position by the two ends of the angular support frame of cross-arm." I " string hanging wire mode is because the factor of windage yaw and angle of oscillation, make its distance between centers of tracks about the big 3m of " V " string hanging wire mode, the width of corridor of " 6I " tower increases to some extent, but the insulator string expense is saved to some extent, and " 6V " is though tower has been saved width of corridor, but tower weight is still heavier, and cost of material is higher, and the economy of tangent tower still awaits further optimization.
The utility model content
In order to overcome the existing higher deficiency of tangent tower cost, technical problem to be solved in the utility model has provided a kind of tangent tower that is used for transmission line of electricity, and it can further reduce cost.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of tangent tower that is used for transmission line of electricity, comprise tower head and at least one group of cross-arm group that sets gradually from the tower head top downwards, each group cross-arm group is made up of three layers of cross-arm, be respectively upper strata cross-arm, middle level cross-arm and lower floor's cross-arm, the insulator string of described upper strata cross-arm and lower floor's cross-arm adopts " I " string hanging wire mode, and the insulator string of described middle level cross-arm adopts " V " string hanging wire mode.
Described tower head is provided with two groups of cross-arm groups.
The three-phase wire that the part that described same group of cross-arm group is positioned at the tower head homonymy is used for same loop fixes.
The beneficial effects of the utility model are: by changing the hanging wire mode of insulator string, circuit width of corridor and tower weight have been reduced, saved cost of investment, it can be used for the single loop tangent tower, common-tower double-return road tangent tower reaches with towers such as tower four loop tangent towers, be particularly suitable for intensive area, house, can reduce removal, reduce the influence of transmission line of electricity ecological environment.
Description of drawings
Fig. 1 is the tower head hanging wire gap circle diagram of existing " 6V " tangent tower.
Fig. 2 is the tower head hanging wire gap circle diagram of existing " 6I " tangent tower.
Fig. 3 is the tower head hanging wire gap circle diagram of " IVI " of the present utility model tangent tower.
Be labeled as among the figure, 1-cross-arm group, 2-upper strata cross-arm, 3-middle level cross-arm, 4-lower floor cross-arm, the 5-redundant space, 6-gap circle, the 7-tower head, 8-" V " insulator string, 9-" I " insulator string, B-outermost lead hanging point is to the distance of body of the tower center line.
The gap circle diagram is meant that under predetermined design condition, hanging wire satisfies the schematic diagram that the electric power gap requires.B+5m is half of width of corridor.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As depicted in figs. 1 and 2, analyze the hanging wire gap circle diagram of existing tower, there is big redundant space 5 in " 6I " and " 6V " drum type tangent tower between middle phase conductor gap circle 6 and the tower head 7, therefore, have common-tower double-return road tangent tower now and on width of corridor, save leeway in addition.
As shown in Figure 3, a kind of tangent tower that is used for transmission line of electricity of the present utility model comprises tower head 7 and at least one group of cross-arm group 1 that sets gradually from the top of tower head 7 downwards, each group cross-arm group 1 is made up of three layers of cross-arm, be respectively upper strata cross-arm 2, middle level cross-arm 3 and lower floor's cross-arm 4, the insulator string of described upper strata cross-arm 2 and lower floor's cross-arm 4 adopts " I " string hanging wire mode, and the insulator string of described middle level cross-arm 3 adopts " V " string hanging wire mode.By adopting " IVI " layout pattern, compressed the redundant space 5 between middle level cross-arm 3 and tower head originally, when " 6I " more shown in Figure 1 drum type tangent tower significantly reduces the circuit width of corridor, alleviated tower weight; " 6V " more shown in Figure 2 drum type tangent tower width of corridor is suitable, but has significantly alleviated tower weight and saved insulator string.
Mainly can reduce width of corridor when using the utility model, when engineering institute through regional house rareness, when the advantage of comparing its compression width of corridor with " 6I " drum type tangent tower is not enough to remedy the inferior position of its insulator string expense increase, still recommend to adopt " 6I " drum type tangent tower.Compare with " 6V " drum type tangent tower, advantage of the present utility model mainly is to have reduced insulator string expense and tower weight.
In case of necessity, described tower head is provided with two groups of cross-arm groups 1.For example, with tower four loop tangent towers, it is six cross-arm structures, has two groups of cross-arm groups 1, also can use serial type of the present utility model.
Usually, described same group of cross-arm group 1 part that the is positioned at tower head 7 homonymies three-phase wire that is used for same loop fixes.
Embodiment one:
Certain 500KV transmission line of electricity is common-tower double-return road three floor cross-arm type tangent towers, and if its tower head design is respectively as Fig. 1, Fig. 2 and pattern shown in Figure 3, and economic comparison sees the following form 1.
Table 1 tower economic comparison
| Tower | Width of corridor (m) | (m) saved in the corridor | Estimation tower weight (t) | Relative tower weight |
| Fig. 1 | 5+18.00+5 | 2.90 | 33.18 | 1.02 |
| Fig. 2 | 5+20.90+5 | 0.00 | 33.33 | 1.03 |
| Fig. 3 | 5+17.95+5 | 2.95 | 32.52 | 1.00 |
As seen from the above table, adopt tangent tower of the present utility model can save the composition of tower shell material consumption of 2%-3%, save cost, simultaneously, can dwindle width of corridor, reduce removal cost, be particularly suitable for the intensive regional power transmission engineering in house and use.
Claims (3)
1. tangent tower that is used for transmission line of electricity, comprise tower head (7) and set gradually downwards from the top of tower head (7) at least one group of cross-arm group (1), each group cross-arm group (1) is made up of three layers of cross-arm, be respectively upper strata cross-arm (2), middle level cross-arm (3) and lower floor's cross-arm (4), it is characterized in that: the insulator string of described upper strata cross-arm (2) and lower floor's cross-arm (4) adopts " I " string hanging wire mode, and the insulator string of described middle level cross-arm (3) adopts " V " string hanging wire mode.
2. a kind of tangent tower that is used for transmission line of electricity as claimed in claim 1 is characterized in that: described tower head (7) is provided with two groups of cross-arm groups (1).
3. a kind of tangent tower that is used for transmission line of electricity as claimed in claim 1 or 2 is characterized in that: the three-phase wire that the part that described same group of cross-arm group (1) is positioned at tower head (7) homonymy is used for same loop fixes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206914297U CN201908471U (en) | 2010-12-30 | 2010-12-30 | Tangent tower for electric transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206914297U CN201908471U (en) | 2010-12-30 | 2010-12-30 | Tangent tower for electric transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201908471U true CN201908471U (en) | 2011-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206914297U Expired - Lifetime CN201908471U (en) | 2010-12-30 | 2010-12-30 | Tangent tower for electric transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201908471U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383639A (en) * | 2011-08-19 | 2012-03-21 | 国网电力科学研究院 | Compactly structured pole tower |
| CN105604378A (en) * | 2015-12-03 | 2016-05-25 | 浙江浙电经济技术研究院 | Designing method for three-butterfly-shaped multi-loop power transmission line pole tower |
| CN106677592A (en) * | 2017-01-10 | 2017-05-17 | 中国电力技术装备有限公司郑州电力设计院 | Hyperbolic trophy-shaped power transmission line tower and construction method thereof |
-
2010
- 2010-12-30 CN CN2010206914297U patent/CN201908471U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383639A (en) * | 2011-08-19 | 2012-03-21 | 国网电力科学研究院 | Compactly structured pole tower |
| CN105604378A (en) * | 2015-12-03 | 2016-05-25 | 浙江浙电经济技术研究院 | Designing method for three-butterfly-shaped multi-loop power transmission line pole tower |
| CN105604378B (en) * | 2015-12-03 | 2018-01-26 | 浙江华云电力工程设计咨询有限公司 | Three butterfly-type multiple loop transmission line pole and tower design methods |
| CN106677592A (en) * | 2017-01-10 | 2017-05-17 | 中国电力技术装备有限公司郑州电力设计院 | Hyperbolic trophy-shaped power transmission line tower and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |
|
| CX01 | Expiry of patent term |