CN201933830U - Straight-line tower for power transmission circuit - Google Patents
Straight-line tower for power transmission circuit Download PDFInfo
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- CN201933830U CN201933830U CN2010206912732U CN201020691273U CN201933830U CN 201933830 U CN201933830 U CN 201933830U CN 2010206912732 U CN2010206912732 U CN 2010206912732U CN 201020691273 U CN201020691273 U CN 201020691273U CN 201933830 U CN201933830 U CN 201933830U
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Abstract
The utility model discloses a straight-line tower for a power transmission circuit, which can further reduce cost and comprises a tower head and at least one cross arm group. The cross arm groups are successively arranged downwards from the top of the tower head, each cross arm group consists of three layers of cross arms including upper-layer cross arms, middle-layer cross arms and lower-layer cross arms, insulator chains of the upper-layer cross arms and the lower-layer cross arms adopt a 'V' chain line hanging mode, insulator chains of the middle-layer cross arms adopt an 'I' chain line hanging mode, and the chain line hanging modes of the insulator chains of the upper-layer cross arms, the middle-layer cross arms and the lower-layer cross arms are called 'VIV' arrangement for short. The straight-line tower which is in the 'VIV' arrangement is favorable for reducing the width of passageways of the circuit. The weight of the tower is lightened. Moreover, the straight-line tower is suitable for dense house areas, can reduce removal and rebuilding, and decreases influence of the power transmission circuit to ecological environments.
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 provides a kind of tangent tower that is used for transmission line of electricity that can further reduce cost.
The technical scheme that its technical problem that solves the utility model adopts is: the 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 " V " string hanging wire mode, and the insulator string of described middle level cross-arm adopts " I " 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 " 6I " tangent tower.
Fig. 2 is the tower head hanging wire gap circle diagram of existing " 6V " tangent tower.
Fig. 3 is the tower head hanging wire gap circle diagram of " VIV " of the present utility model tangent tower.
Be labeled as 1-cross-arm group, 2-upper strata cross-arm, 3-middle level cross-arm, 4-lower floor cross-arm among the figure, the 5-redundant space, 6-gap circle, 7-tower head, 8-" V " insulator string, 9-" I " insulator string, the 30-basal plane, the 31-inclined-plane, 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, the 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 " V " string hanging wire mode, and the insulator string of described middle level cross-arm 3 adopts " I " string hanging wire mode.By adopting " VIV " layout pattern, compressed the redundant space 5 between middle level cross-arm 3 and tower head 7 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 7 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+20.90+5 | 0.00 | 33.33 | 1.05 |
Fig. 2 | 5+18.00+5 | 2.90 | 33.18 | 1.04 |
Fig. 3 | 5+18.00+5 | 2.90 | 31.73 | 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 4%-5%, the cost of reducing investment outlay simultaneously, can dwindle width of corridor, reduces removal cost, is particularly suitable for the intensive regional power transmission engineering in house and uses.
Claims (3)
1. the 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 " V " string hanging wire mode, and the insulator string of described middle level cross-arm (3) adopts " I " string hanging wire mode.
2. the 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. the 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 |
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CN2010206912732U CN201933830U (en) | 2010-12-30 | 2010-12-30 | Straight-line tower for power transmission circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN2010206912732U CN201933830U (en) | 2010-12-30 | 2010-12-30 | Straight-line tower for power transmission circuit |
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CN201933830U true CN201933830U (en) | 2011-08-17 |
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CN2010206912732U Expired - Lifetime CN201933830U (en) | 2010-12-30 | 2010-12-30 | Straight-line tower for power transmission circuit |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102704734A (en) * | 2012-05-18 | 2012-10-03 | 中国电力工程顾问集团中南电力设计院 | Double loop VIV (vortex induced vibration) string-drum-shaped tangent tower |
CN104091032A (en) * | 2014-07-24 | 2014-10-08 | 四川电力设计咨询有限责任公司 | Design method for common-tower double-circuit transmission line in heavy ice area |
CN105604372A (en) * | 2015-12-24 | 2016-05-25 | 广东迪生电力钢构器材有限公司 | Claw tower convenient to maintain |
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 |
-
2010
- 2010-12-30 CN CN2010206912732U patent/CN201933830U/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102704734A (en) * | 2012-05-18 | 2012-10-03 | 中国电力工程顾问集团中南电力设计院 | Double loop VIV (vortex induced vibration) string-drum-shaped tangent tower |
CN104091032A (en) * | 2014-07-24 | 2014-10-08 | 四川电力设计咨询有限责任公司 | Design method for common-tower double-circuit transmission line in heavy ice area |
CN104091032B (en) * | 2014-07-24 | 2017-03-15 | 四川电力设计咨询有限责任公司 | Heavy icing area common-tower double-return road Transmission Line Design method |
CN105604372A (en) * | 2015-12-24 | 2016-05-25 | 广东迪生电力钢构器材有限公司 | Claw tower convenient to maintain |
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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GR01 | Patent grant | ||
CX01 | Expiry of patent term | ||
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Granted publication date: 20110817 |