CN202026064U - Single-double hybrid power transmission line transposition tower with auxiliary arm - Google Patents
Single-double hybrid power transmission line transposition tower with auxiliary arm Download PDFInfo
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- CN202026064U CN202026064U CN2011201515613U CN201120151561U CN202026064U CN 202026064 U CN202026064 U CN 202026064U CN 2011201515613 U CN2011201515613 U CN 2011201515613U CN 201120151561 U CN201120151561 U CN 201120151561U CN 202026064 U CN202026064 U CN 202026064U
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Abstract
The utility model discloses a single-double hybrid power transmission line transposition tower with an auxiliary arm, which comprises tower feet, a tower body, an upper cross arm arranged on the upper end of the tower body and a lower cross arm positioned on a joint of the tower body and the tower feet. One side of the tower body is provided with a wire jumper support which is in vertical and fixed connection with the middle of the upper cross arm. Two sides of two end portions of the lower cross arm are respectively provided with a strain insulation string I for drawing a side wire and a wire jumper string I which is connected with wires led out from the corresponding strain insulation string. Strain insulation strings II for drawing a middle wire are respectively arranged between the middle of the lower cross arm on the wire jumper support side and the tower body opposite to the wire jumper support. An end portion of the wire jumper support is provided with a suspension insulation string for hanging the middle wire, and one end of the upper cross arm is provided with the wire jumper string II for connecting the middle wires on two sides of the transposition tower. The single-double hybrid power transmission line transposition tower with the auxiliary arm can match with branch towers to meet requirements of angle balance in exchanging of single circuits and double circuits and the like. The single-double hybrid power transmission line transposition tower with the auxiliary arm is reliable in performance, attractive in structure, practical and convenient, and not affected by terrain, can be installed at small corner positions of lines, and can simultaneously meet requirements of various ice zones.
Description
Technical field
The utility model relates to a kind of used for transmission line iron tower, a kind of specifically transposition tower of the band auxiliary arm that uses when single loop transmission line and the transmission line conversion of common-tower double-return road.
Background technology
The arrangements of conductors mode of ultra-high-tension power transmission line, except that equilateral triangle was arranged, the wire spacing of three-phase conducting wire was unequal.And the impedance of lead is relevant with wire spacing and lead radius, and therefore, lead is not as replacing, and three phase of impedance are unbalanced, and circuit is longer, and this imbalance is more serious.Usually, the fed distance of transmission line is all long, with 110kV three-phase alternating current single loop is example, charging operation state three-phase conducting wire all can generate an electromagnetic field, and interact, this effect has certain accumulation, so the length that general 110kV transmission line (or electrical network) surpasses 100km should be set up transposition tower, be used for changing the phase arrangement of three-phase conducting wire, eliminate top said electric field disequilibrium to reach.
Transposition tower mainly is the phase arrangement formal transformation that realizes three-phase conducting wire by the strain insulator insulator string of traction lead on the reasonable Arrangement iron tower, the wire jumper string that is communicated with lead.At present, the transposition of single loop, common-tower double-return road, single time and common-tower double-return road mixed power transmission line mainly realizes by single loop self transposition tower, common-tower double-return road self transposition tower.Single loop self transposition tower comprises column foot, body of the tower, upward cross-arm, middle cross-arm, following cross-arm, wire jumper prop up and be configured to, and they are truss structure.The column foot top is provided with vertical body of the tower, last cross-arm is positioned at the body of the tower top, following cross-arm is positioned at the junction of body of the tower and column foot, middle cross-arm is positioned at the middle part of body of the tower, wherein cross-arm is the truss structure that stretches out the body of the tower left and right sides up and down, and middle cross-arm then is the truss structure that is arranged on a side of body of the tower, the length maximum of following cross-arm, secondly be last cross-arm, middle cross-arm length minimum.The wire jumper support is arranged on a side of body of the tower fore-and-aft direction, is positioned at body of the tower and the place that following cross-arm intersects, the middle part of cross-arm in being.The wire jumper support is orthogonal with following cross-arm.The both sides of following cross-arm both ends and middle cross-arm end are provided with the strain insulator insulator string of traction lead, and the end of wire jumper support is provided with the insulator string that dangles that hangs lead, and the end of cross-arm one side is provided with the wire jumper string in last cross-arm both ends, the following cross-arm correspondence.The process that realizes the three-phase conducting wire transposition by single loop self transposition tower is: suppose that the middle cross-arm of single loop self transposition tower is arranged on the left side of iron tower, the lead of band wire jumper support one end is as the end of incoming cables, the other end is as leading-out terminal, three-phase conducting wire from left to right is followed successively by the A phase, the B phase, the C phase, the A phase conductor is by the strain insulator insulator string traction of end of incoming cables, cross-arm left side down, upwards introduce the wire jumper string of the last cross-arm of respective side then, the A phase conductor of drawing from last cross-arm wire jumper string leading-out terminal is drawn to again on the strain insulator insulator string of cross-arm leading-out terminal, then the end of incoming cables A phase conductor that is positioned at left side side is converted to central conductor at leading-out terminal; The B phase conductor is by the end strain insulator insulator string traction of end of incoming cables on the middle cross-arm, upwards introduce the wire jumper string of going up the cross-arm right side then, the B phase conductor of drawing from last cross-arm wire jumper string leading-out terminal is drawn to down on the strain insulator insulator string of cross-arm leading-out terminal again, and the B phase conductor in the middle of then the end of incoming cables is positioned at is converted to the right side lead at leading-out terminal; After the strain insulator insulator string traction of C phase conductor by end of incoming cables on the cross-arm under the right side, turn by the insulator string that dangles of wire jumper support on the wire jumper string of cross-arm under the left side, the C phase conductor of drawing from following cross-arm wire jumper string leading-out terminal is by the leading-out terminal strain insulator insulator string traction of this wire jumper string correspondence position, and then the end of incoming cables C phase conductor that is positioned at the right side is converted to left side side lead at leading-out terminal.The lead of this transposition tower design draws and connects the form more complicated, and design, maintenance, maintenance etc. are all very inconvenient, and by contrast, the version of common-tower double-return road self transposition tower is then complicated more.But along with the rising of electric pressure, the lead of two kinds of transposition towers draws to connect and becomes increasingly complex, and this also becomes whole line insulation weak link, also is unfavorable for operation maintenance and hotline maintenance etc. in the future, operation maintenance simultaneously.
The utility model content
The utility model technical issues that need to address provide the transposition tower of the band auxiliary arm that uses when a kind of wiring that replaces simply is suitable for single loop transmission line and the transmission line conversion of common-tower double-return road.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is:
The two mixed power transmission line transposition towers of list of band auxiliary arm comprise the following cross-arm of last cross-arm, body of the tower and the column foot junction of column foot, body of the tower, body of the tower upper end, fixedly connected in the middle part of body of the tower one side setting and the last cross-arm and with the mutually perpendicular wire jumper support of last cross-arm; Strain insulator insulator string I that the both sides at the both ends of following cross-arm are provided with traction limit lead and the wire jumper string I that is connected the limit lead of drawing from corresponding strain insulator insulator string; The strain insulator insulator string II of lead in the traction is set respectively in the middle of the following cross-arm middle part of wire jumper bracket side, the body of the tower of wire jumper support opposite side, the wire jumper bracket end is provided with the insulator string that dangles of lead in the suspension, and an end of last cross-arm is provided with the wire jumper string II that connects lead in the transposition tower both sides.
Because the technological progress of having adopted technique scheme, the utility model to obtain is:
The utility model is by stretching out the wire jumper support along line direction, the phase conductor that the single loop end of incoming cables is arranged in eminence draws down by the wire jumper support along line direction, at the single loop leading-out terminal middle phase conductor and limit lead are evened up, with the rounded projections arranged formal transformation is horizontal form, according to the phase sequence of transposition needs lead is received an iron tower then and realizes the phase sequence transposition.The utility model is particularly useful in single time and the common-tower double-return joint line, in use, can between the transposition tower of the strain tower on common-tower double-return road and band auxiliary arm, the branch tower that is F type structure be set, with the three-phase conducting wire phase sequence as required of horizontal form of transposition tower wire jumper support one side of band auxiliary arm put in order be hung on branch tower after, three-phase conducting wire on the branch tower is guided on the strain tower of common-tower double-return road the problems such as angle balance when better meeting single loop and double loop conversion.In addition, the utility model also can be used for also can being used for common-tower double-return road transmission line in the single loop transmission line that lead is the vertical arrangement form.
Transposition form of the present utility model is except many downward lead-in wires, there is not other complicated wire jumper form again, the transposition wiring is simply clear, floor space is little, single tower index is superior, and make on the branch tower wire jumper simple, iron tower need not particular design, realizes the various intersection requirements of lead at strain tower transposition defined.The influence that the slightly increase of the common angle tower of this transposition tower weight ratio, dependable performance, structure be attractive in appearance, practical and convenient, be not subjected to landform, and it can be installed in circuit little corner, need not establish exchange point in addition, can satisfy the requirement of various ice formations simultaneously.Adopt this transposition tower to make early stage, the survey and design in later stage and construction and operation maintenance aspect all save workload, and be applicable to alpine terrain than single loop or double loop transposition tower.
Description of drawings
Fig. 1 is the three-phase conducting wire transposition schematic diagram of existing single loop self transposition tower;
Fig. 2 is structure of the present utility model and three-phase conducting wire transposition schematic diagram.
Wherein, 1, column foot, 2, body of the tower, 3, go up cross-arm, 4, cross-arm down, 5, the wire jumper support, 6, strain insulator insulator string I, 7, the insulator string that dangles, 8, wire jumper string I, 9, lead, 10, middle cross-arm; 61, strain insulator insulator string II, 81, wire jumper string II.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further details:
The two mixed power transmission line transposition towers of the list of band auxiliary arm comprise column foot 1, body of the tower 2, last cross-arm 3, following cross-arm 4, wire jumper support 5 as shown in Figure 2, and they are truss structure.Column foot 1 top is provided with vertical body of the tower 2, and last cross-arm 3 is positioned at body of the tower 2 tops, and following cross-arm 4 is positioned at the junction of body of the tower 2 and column foot 1, and wire jumper support 5 is arranged on a side of body of the tower 2 fore-and-aft directions, fixedlys connected with last cross-arm 3 middle parts and orthogonal with last cross-arm 3.Strain insulator insulator string I 6 that the both sides at following cross-arm 4 both ends are provided with traction limit lead and the wire jumper string I 8 that is connected the limit lead of drawing from corresponding strain insulator insulator string I, then the limit lead of transposition tower both sides is drawn by the strain insulator insulator string I 6 of the end of following cross-arm 4, and is communicated with by the wire jumper string I 8 of correspondence position.Following cross-arm 4 middle parts of wire jumper support 5 sides, the strain insulator insulator string II 61 of lead in the traction is set in the middle of the body of the tower 2 of wire jumper support 5 opposite sides, wire jumper support 5 ends are provided with the insulator string 7 that dangles of lead in the suspension, one end of last cross-arm 3 is provided with the wire jumper string II 81 that connects lead in the transposition tower both sides, body of the tower one side that then replaces is arranged in the lead on top of rounded projections arranged form by strain insulator insulator string II 61 traction at body of the tower 2 middle parts, be connected to afterwards on the wire jumper string II 81 of cross-arm 3 one ends, the body of the tower opposite side from the wire jumper string II 81 of last cross-arm 3 draw lead be drawn to down the strain insulator insulator string II 61 at cross-arm 4 middle parts by the insulator string 7 that dangles of wire jumper support 5, like this, the transposition of the three-phase conducting wire of body of the tower one side rounded projections arranged form is the horizontal form of body of the tower opposite side.Horizontally the lead of form is received on the branch tower with the arrangement of conductors form of vertical arrangement according to the phase sequence of transposition needs, draws and gets back on the strain tower.If common-tower double-return road or single time and common-tower double-return road mixed power transmission line, the transposition tower and the branch tower of two band auxiliary arms is set respectively then.
Claims (1)
1. be with the two mixed power transmission line transposition towers of list of auxiliary arm, comprise the following cross-arm (4) of last cross-arm (3), body of the tower and the column foot junction of column foot (1), body of the tower (2), body of the tower upper end, it is characterized in that: body of the tower one side setting and last cross-arm (3) middle part vertical fixing tie jumper support (5); Strain insulator insulator string I (6) that the both sides at the both ends of following cross-arm (4) are provided with traction limit lead and the wire jumper string I (8) that is connected the limit lead of drawing from corresponding strain insulator insulator string I; The strain insulator insulator string II (61) of lead in the traction is set respectively in the middle of following cross-arm (4) middle part of wire jumper bracket side, the body of the tower (2) of wire jumper support opposite side, wire jumper support (5) end is provided with the insulator string that dangles (7) of lead in the suspension, and an end of last cross-arm (3) is provided with the wire jumper string II (81) that connects lead in the transposition tower both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201515613U CN202026064U (en) | 2011-05-13 | 2011-05-13 | Single-double hybrid power transmission line transposition tower with auxiliary arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201515613U CN202026064U (en) | 2011-05-13 | 2011-05-13 | Single-double hybrid power transmission line transposition tower with auxiliary arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202026064U true CN202026064U (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201515613U Expired - Lifetime CN202026064U (en) | 2011-05-13 | 2011-05-13 | Single-double hybrid power transmission line transposition tower with auxiliary arm |
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| Country | Link |
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| CN (1) | CN202026064U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022951A (en) * | 2012-12-27 | 2013-04-03 | 四川电力设计咨询有限责任公司 | Jumping around transposition tower in common-tower double-circuit transmission line |
| CN103835567A (en) * | 2013-12-03 | 2014-06-04 | 国家电网公司 | Upward-winding tension-resistant tower on extra-high-voltage direct-current transmission line |
| CN105155908A (en) * | 2015-08-31 | 2015-12-16 | 国核电力规划设计研究院 | Heavy icing area alternating current strain tower in shape like Chinese character 'gan' |
| CN109208999A (en) * | 2018-10-24 | 2019-01-15 | 国网新疆电力有限公司建设分公司 | A kind of transposition tower and interchanging method |
| CN110284747A (en) * | 2019-08-13 | 2019-09-27 | 中国电建集团贵州电力设计研究院有限公司 | A kind of single loop transposition tower and interchanging method |
| CN113266195A (en) * | 2021-06-01 | 2021-08-17 | 国核电力规划设计研究院有限公司 | Wire cross arm assembly and four-circuit tower on same tower |
| CN115405149A (en) * | 2022-09-16 | 2022-11-29 | 国网青海省电力公司经济技术研究院 | Double-loop transposition tower for power transmission line |
-
2011
- 2011-05-13 CN CN2011201515613U patent/CN202026064U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022951A (en) * | 2012-12-27 | 2013-04-03 | 四川电力设计咨询有限责任公司 | Jumping around transposition tower in common-tower double-circuit transmission line |
| CN103835567A (en) * | 2013-12-03 | 2014-06-04 | 国家电网公司 | Upward-winding tension-resistant tower on extra-high-voltage direct-current transmission line |
| CN105155908A (en) * | 2015-08-31 | 2015-12-16 | 国核电力规划设计研究院 | Heavy icing area alternating current strain tower in shape like Chinese character 'gan' |
| CN109208999A (en) * | 2018-10-24 | 2019-01-15 | 国网新疆电力有限公司建设分公司 | A kind of transposition tower and interchanging method |
| CN109208999B (en) * | 2018-10-24 | 2023-09-29 | 国网新疆电力有限公司建设分公司 | Transposition tower and transposition method |
| CN110284747A (en) * | 2019-08-13 | 2019-09-27 | 中国电建集团贵州电力设计研究院有限公司 | A kind of single loop transposition tower and interchanging method |
| CN113266195A (en) * | 2021-06-01 | 2021-08-17 | 国核电力规划设计研究院有限公司 | Wire cross arm assembly and four-circuit tower on same tower |
| CN115405149A (en) * | 2022-09-16 | 2022-11-29 | 国网青海省电力公司经济技术研究院 | Double-loop transposition tower for power transmission line |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111102 |