CN208347419U - A kind of novel three back transmission lines steel tower - Google Patents
A kind of novel three back transmission lines steel tower Download PDFInfo
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- CN208347419U CN208347419U CN201820541753.7U CN201820541753U CN208347419U CN 208347419 U CN208347419 U CN 208347419U CN 201820541753 U CN201820541753 U CN 201820541753U CN 208347419 U CN208347419 U CN 208347419U
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Abstract
The utility model discloses a kind of novel three back transmission lines steel towers, belong to field of overhead power transmission lines.The three back transmission lines steel tower includes: tower body；The tower head at the top of the tower body is set；A pair of of earth wire rack at the top of the tower head is set；And a pair of of lower wire cross-arm of the two sides of the tower body is set；The three-phase conducting wire hanging point for having the first circuit is wherein horizontally disposed on the tower head；The three-phase conducting wire hanging point of second servo loop and the three-phase conducting wire hanging point of tertiary circuit are respectively arranged on the pair of lower wire cross-arm.The utility model embodiment three back transmission line steel towers of offer concentrate the distribution of the conducting wire hanging point of the steel tower of three back transmission lines more, reduce the distance of each conducting wire hanging point in vertical direction on iron tower of power transmission line, so as to shorten the height of steel tower, less consumptive material, steel tower weight is alleviated, the comprehensive cost expense of tower list base and foundation construction is reduced.
Description
Technical field
The utility model relates to field of overhead power transmission lines, in particular to a kind of novel three back transmission lines steel tower.
Background technique
In order to improve route unit corridor transmission capacity and improve land utilization ratio, China's power grid uses three more and more
Back transmission line steel tower is transmitted electricity.
In the prior art, multiple conducting wires that three back transmission line steel towers include tower body and set gradually downwards at the top of the tower body
Cross-arm is provided with a conducting wire hanging point on each conducting wire cross-arm, and the three-phase for hanging each circuit in three circuits is led
Line, the three-phase conducting wire in each circuit is in that upper, middle and lower three-phase is arranged vertically in three circuits.
The inventor finds that the existing technology has at least the following problems:
The distance of the conducting wire hanging point of the existing steel tower for being used for three back transmission lines in vertical direction farther out so that straight line
The height of tower is higher, and tower weight is heavier, and then keeps the dosage of tower list base and basic material amount larger, and comprehensive cost is higher.
Utility model content
The utility model provides a kind of novel three back transmission lines steel tower, can solve above-mentioned technical problem.
Specifically, including technical solution below:
Provide a kind of novel three back transmission lines steel tower, comprising:
Tower body；
The tower head at the top of the tower body is set；
A pair of of earth wire rack at the top of the tower head is set；And
A pair of of lower wire cross-arm of the two sides of the tower body is set；Wherein
The three-phase conducting wire hanging point for having the first circuit is horizontally disposed on the tower head；It is set respectively on the pair of lower wire cross-arm
It is equipped with the three-phase conducting wire hanging point of second servo loop and the three-phase conducting wire hanging point of tertiary circuit.
In a kind of possible design, the tower head includes:
Two for being fixed on the top of the tower body crank arm, crank arm described in two between formed wine glass-shaped space；With
Upper left conducting wire cross-arm, the upper right conducting wire cross-arm at the top cranked arm described in being separately fixed at two；And
Middle conducting wire cross-arm between cranking arm described in being fixed on two；
The three-phase conducting wire hanging point in first circuit is separately positioned on the upper left conducting wire cross-arm, the upper right conducting wire cross-arm
On the middle conducting wire cross-arm.
In a kind of possible design, on the upper left conducting wire cross-arm and the upper right conducting wire cross-arm described first
I type insulator chain is correspondingly arranged at the three-phase conducting wire hanging point in circuit, first circuit on the middle conducting wire cross-arm
Three-phase conducting wire hanging point at be correspondingly arranged on V-type insulator chain.
In a kind of possible design, it is located at the upper left conducting wire cross-arm, the upper right conducting wire cross-arm and the middle conducting wire
It is correspondingly arranged on V-type insulator chain respectively at the three-phase conducting wire hanging point in first circuit on cross-arm.
In a kind of possible design, the lower wire cross-arm includes lower-left conducting wire cross-arm and bottom right conducting wire cross-arm；
The lower-left conducting wire cross-arm and the bottom right conducting wire cross-arm respectively include the horizontal wire being fixed on the tower body
Cross-arm and the cross-arm for being fixed on the horizontal wire cross arm end are cranked arm；
Wherein two pairs of hanging points of the three-phase conducting wire hanging point of the second servo loop are arranged in described in the lower-left conducting wire cross-arm
On horizontal wire cross-arm, the cross-arm that the lower-left conducting wire cross-arm is arranged in another pair hanging point crank arm on the tower body；
Wherein two pairs of hanging points of the three-phase conducting wire hanging point of the tertiary circuit are arranged in described in the bottom right conducting wire cross-arm
On horizontal wire cross-arm, the cross-arm that the bottom right conducting wire cross-arm is arranged in another pair hanging point crank arm on the tower body.
In a kind of possible design, V-type insulator is correspondingly arranged at the three-phase conducting wire hanging point of the second servo loop
String；
V-type insulator chain is correspondingly arranged at the three-phase conducting wire hanging point of the tertiary circuit.
In a kind of possible design, the lower wire cross-arm is made of angle steel and/or steel pipe.
In a kind of possible design, the tower head is made of angle steel and/or steel pipe.
In a kind of possible design, the tower body is made of angle steel and/or steel pipe.
In a kind of possible design, the cross-sectional area of the tower body is gradually reduced from bottom to top.
The beneficial effect of technical solution provided by the embodiment of the utility model is:
Three back transmission lines steel tower provided by the embodiment of the utility model, by by the three-phase conducting wire hanging point water in the first circuit
It is flat to be arranged on tower head, the three-phase conducting wire hanging point of the three-phase conducting wire hanging point of second servo loop and tertiary circuit is separately positioned on tower body
Two sides a pair of of lower wire cross-arm on so that the distribution of the conducting wire hanging point of the steel tower of three back transmission lines is more concentrated, reduce
The distance of each conducting wire hanging point in vertical direction reduces consumptive material so as to shorten the height of steel tower on iron tower of power transmission line,
Steel tower weight is alleviated, the comprehensive cost expense of tower list base and foundation construction is reduced.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the novel three back transmission lines steel tower of one kind provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of the conducting wire hanging point of novel three back transmission lines steel tower in Fig. 1.
Appended drawing reference in figure respectively indicates:
1- tower body；The first tower body of 11-；The second tower body of 12-；
2- tower head；21- cranks arm；The upper left 22- conducting wire cross-arm；23- upper right conducting wire cross-arm；Conducting wire cross-arm in 24-；
3- earth wire rack；The left earth wire rack of 31-；The right earth wire rack of 32-；
4- lower wire cross-arm；The lower-left 41- conducting wire cross-arm；The bottom right 42- conducting wire cross-arm；
The three-phase conducting wire hanging point in the first circuit 5-；
The three-phase conducting wire hanging point of 6- second servo loop；
The three-phase conducting wire hanging point of 7- tertiary circuit；
8- electric clearance circle.
Specific embodiment
To keep the technical solution of the utility model and advantage clearer, the utility model is implemented below in conjunction with attached drawing
Mode is described in further detail.
The utility model embodiment provides a kind of novel three back transmission lines steel tower, as illustrated in fig. 1 and 2, comprising:
Tower body 1；
The tower head 2 at the top of tower body 1 is set；
A pair of of earth wire rack 3 at the top of tower head 2 is set；And
A pair of of lower wire cross-arm 4 of the two sides of tower body 1 is set；Wherein
The three-phase conducting wire hanging point 5 for having the first circuit is horizontally disposed on tower head 2；It is respectively arranged on a pair of of lower wire cross-arm 4
The three-phase conducting wire hanging point 6 of second servo loop and the three-phase conducting wire hanging point 7 of tertiary circuit.
Three back transmission lines steel tower provided by the embodiment of the utility model, by by the three-phase conducting wire hanging point 5 in the first circuit
It is horizontally set on tower head 2, the three-phase conducting wire hanging point 7 of the three-phase conducting wire hanging point 6 of second servo loop and tertiary circuit is respectively set
On a pair of of lower wire cross-arm 4 of the two sides of tower body 1, so that the distribution of the conducting wire hanging point of the steel tower of three back transmission lines more collects
In, the distance of each conducting wire hanging point in vertical direction on iron tower of power transmission line is reduced, to reduce average line height, reduces iron
The height of tower alleviates steel tower weight to reduce consumptive material, reduces the comprehensive cost expense of tower list base and foundation construction.
Meanwhile so that three telegram in reply roads is unevenly arranged in tower body two sides using logical produce of tower in the prior art, so that iron
Tower bears biggish torque, and in contrast to this, three back transmission lines steel tower provided by the embodiment of the utility model can make three telegram in reply roads
Wire arrangements it is more symmetrical, reduce torque, keep steel tower stress more reasonable.
In application, being horizontally disposed with the three-phase conducting wire hanging point 5 in the first circuit on tower head 2, divide on a pair of of lower wire cross-arm 4
Not She Zhi the three-phase conducting wire hanging point 6 of second servo loop and the three-phase conducting wire hanging point 7 of tertiary circuit, then by the first circuit, second time
Each phase conductor of road and tertiary circuit is fixed on corresponding conducting wire hanging point.
It is understood that the conducting wire hanging point being arranged on tower head 2 can be arranged in a pair of of lower wire cross-arm in horizontally arranged
Conducting wire hanging point on 4 can be in horizontally arranged, can also be in be staggered.And the distance between each conducting wire hanging point meets electric clearance
(electric clearance refers in the case where guaranteeing stable electric property and safety, and the shortest distance of insulation is able to achieve by air),
That is, electric clearance circle 8 as shown in Figure 2 may be housed in the three-phase of the three-phase conducting wire hanging point 5 in the first circuit, second servo loop
The three-phase conducting wire hanging point 7 of conducting wire hanging point 6 and tertiary circuit is between any two.
Wherein, a pair of of earth wire rack 3 is set to the top of tower head 2, is provided with ground wire hanging point on earth wire rack 3, for setting up ground
Line, the length and height of earth wire rack 3 meet the requirement of ground wire shielding angle and grounded-line vertical interval, to play lightning protection conducting wire
Effect.
Illustratively, as shown in Figure 1, earth wire rack 3 can be made to include left earth wire rack 31 and right earth wire rack 32, left earth wire rack 31 and the right side
Earth wire rack 32 can be in chicken head type, to avoid cantilever member by curved.
Further, left earth wire rack 31 and right earth wire rack 32 can also be made to be symmetricly set on the top of tower head 2.
In three above-mentioned back transmission line steel towers, the three-phase conducting wire hanging point 5 in the first circuit is horizontally set on tower head 2,
In order to guarantee the structural strength of tower head 2, settable tower head 2 is made of angle steel and/or steel pipe.And the knot in order to make entire tower head 2
Structure design is more compact, as shown in Figure 1, settable tower head 2 includes:
It is fixed on two of the top of tower body 1 and cranks arm 21, crank arm for two and form wine glass-shaped space between 21；
Crank arm described in being separately fixed at two 21 top upper left conducting wire cross-arm 22, upper right conducting wire cross-arm 23；And
It is fixed on two middle conducting wire cross-arms 24 cranked arm between 21；
The three-phase conducting wire hanging point 5 in the first circuit be separately positioned on upper left conducting wire cross-arm 22, upper right conducting wire cross-arm 23 and in lead
On line cross-arm 24.
Tower head 2 as shown in Figure 1 is in wine glass-shaped, can be described as wine glass-shaped tower head.
It is understood that can by upper left conducting wire cross-arm 22 towards outside be fixed on one crank arm 21 top side, it is right
Upper conducting wire cross-arm 23 towards outside be fixed on another crank arm 21 top side；Meanwhile upper left conducting wire cross-arm 22 and upper right
Conducting wire cross-arm 23 can be designed as equal or different length as needed.
In application, can be insulated by being arranged on upper left conducting wire cross-arm 22, upper right conducting wire cross-arm 23 and middle conducting wire cross-arm 24
Substring hangs each phase conductor.The set-up mode of applicable insulator chain is illustrated below:
In a kind of possible embodiment, settable the on the upper left conducting wire cross-arm 22 and upper right conducting wire cross-arm 23
I type insulator chain is correspondingly arranged at the three-phase conducting wire hanging point 5 of primary Ioops, three of the first circuit on middle conducting wire cross-arm 24
V-type insulator chain is correspondingly arranged at phase conductor hanging point 5.
In application, an I type insulator chain is connected to the end of upper left conducting wire cross-arm 22, another I type insulator chain
It is connected to the end of upper right conducting wire cross-arm 23, the both ends of a V-type insulator chain are connected to the both ends of middle conducting wire cross-arm 24,
Then each phase conductor in the first circuit is separately connected on two I type insulator chains and a V-type insulator chain.Two after connection
Electric clearance circle 8 can be accommodated between two conducting wires.
In alternatively possible embodiment, it is horizontal to be located at upper left conducting wire cross-arm 22, upper right conducting wire cross-arm 23 and middle conducting wire
It is correspondingly arranged on V-type insulator chain respectively at the three-phase conducting wire hanging point 5 in the first circuit in load 24.
In application, the both ends of a V-type insulator chain to be connected to the both ends of upper left conducting wire cross-arm 22, another V-type is exhausted
The both ends of edge substring are connected to the both ends of upper right conducting wire cross-arm 23, and it is horizontal that the both ends of another V-type insulator chain are connected to middle conducting wire
The both ends of load 24, are then separately connected each phase conductor in upper first circuit on three V-type insulator chains.Leading after connection two-by-two
Electric clearance circle 8 can be accommodated between line.
In three above-mentioned back transmission line steel towers, the lower section of tower head 2 is arranged in a pair of of lower wire cross-arm 4, is respectively used to
The three-phase conducting wire hanging point 6 of second servo loop and the three-phase conducting wire hanging point 7 of tertiary circuit are set.Below to applicable lower wire cross-arm 4
Set-up mode illustrated:
In a kind of possible embodiment, settable lower wire cross-arm 4 includes lower-left conducting wire cross-arm 41 and bottom right conducting wire
Cross-arm 42；
The three-phase conducting wire hanging point 6 of second servo loop is horizontally set on lower-left conducting wire cross-arm 41,
The three-phase conducting wire hanging point 7 of tertiary circuit is horizontally set on bottom right conducting wire cross-arm 42.
In application, in the three-phase conducting wire hanging point 6 and of lower-left conducting wire cross-arm 41 and the second servo loop of bottom right conducting wire cross-arm 42
Three V-type insulator chains of setting are corresponding in turn at the three-phase conducting wire hanging point 7 in three circuits, then at three of lower-left conducting wire cross-arm 41
The three-phase conducting wire that second servo loop is connected on V-type insulator chain, connects the on three V-type insulator chains of bottom right conducting wire cross-arm 42
The three-phase conducting wire in three circuits.
In alternatively possible embodiment, also settable lower wire cross-arm 4 includes lower-left conducting wire cross-arm 41 and bottom right
Conducting wire cross-arm 42；
Lower-left conducting wire cross-arm 41 and bottom right conducting wire cross-arm 42 respectively include the horizontal wire cross-arm being fixed on tower body 1 and consolidate
The cross-arm for being scheduled on horizontal wire cross arm end is cranked arm；
The horizontal wire that lower-left conducting wire cross-arm 41 is arranged in wherein two pairs of hanging points of the three-phase conducting wire hanging point 6 of second servo loop is horizontal
In load, the cross-arm that lower-left conducting wire cross-arm 41 is arranged in another pair hanging point crank arm on tower body 1；
The horizontal wire that bottom right conducting wire cross-arm 42 is arranged in wherein two pairs of hanging points of the three-phase conducting wire hanging point 7 of tertiary circuit is horizontal
In load, the cross-arm that bottom right conducting wire cross-arm 42 is arranged in another pair hanging point crank arm on tower body 1.
In application, two V-type insulator chains can be horizontally set on the horizontal wire cross-arm of lower-left conducting wire cross-arm 41, it will
Lower-left conducting wire cross-arm 41 is arranged in another V-type insulator chain cross-arm is cranked arm between tower body 1 (wherein, V-type insulator chain
One end is connected on cross-arm cranks arm, and the other end is connected on tower body 1), upper is then separately connected on three V-type insulator chains
Each phase conductor of secondary circuit.Electric clearance circle 8 can be accommodated between conducting wire two-by-two after connection.
Two V-type insulator chains are horizontally set on the horizontal wire cross-arm of bottom right conducting wire cross-arm 42, by another V-type
The cross-arm that bottom right conducting wire cross-arm 42 is arranged in insulator chain is cranked arm between tower body 1, and (wherein, one end of V-type insulator chain connects
On cross-arm is cranked arm, the other end is connected on tower body 1), then upper tertiary circuit is separately connected on three V-type insulator chains
Each phase conductor.Electric clearance circle 8 can be accommodated between conducting wire two-by-two after connection.
Wherein, lower-left conducting wire cross-arm 41 and bottom right conducting wire cross-arm 42 can be located on the uniform height of tower body 1, i.e., the two is in tower
Total vertex on body 1, in addition, lower-left conducting wire cross-arm 41 and bottom right conducting wire cross-arm 42 can be designed as equal or different length as needed.
In three above-mentioned back transmission line steel towers, in order to guarantee the structural strength of lower wire cross-arm 4 and tower body 1, it can set
Lower wire cross-arm 4 is set to be made of angle steel and/or steel pipe；Tower body 1 is made of angle steel and/or steel pipe.
Further, in order to keep steel tower whole more stable, the whole trapezoidal structure of tower body 1 can be made, i.e., tower body 1 is transversal
Face area is gradually reduced from bottom to top.
Illustratively, settable tower body 1 becomes slope using double, as shown in Figure 1, setting tower body 1 includes the first tower body 11 and second
Tower body 12, the gradient of the second tower body 12 and become slope position can be selected in lower wire cross-arm 4 below less than the gradient of the first tower body 11
At 1-3 internode position.
Three back transmission lines steel tower provided by the utility model can be used for the ac transmission of each voltage class of 110kV or more
Route, and the first circuit, second servo loop and tertiary circuit are that identical voltage class is also possible to different voltages grade.
The above is merely for convenience of it will be understood by those skilled in the art that the technical solution of the utility model, not to
Limit the utility model.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of novel three back transmission lines steel tower characterized by comprising
Tower body (1)；
Tower head (2) at the top of the tower body (1) is set；
A pair of of earth wire rack (3) at the top of the tower head (2) is set；And
A pair of of lower wire cross-arm (4) in the two sides of the tower body (1) is set；Wherein
The three-phase conducting wire hanging point (5) for having the first circuit is horizontally disposed on the tower head (2)；On the pair of lower wire cross-arm (4)
It is respectively arranged with the three-phase conducting wire hanging point (6) of second servo loop and the three-phase conducting wire hanging point (7) of tertiary circuit.
2. three back transmission lines steel tower according to claim 1, which is characterized in that the tower head (2) includes:
Two for being fixed on the top of the tower body (1) crank arm (21), crank arm described in two and form wine glass-shaped space between (21)；
With
Crank arm described in being separately fixed at two (21) top upper left conducting wire cross-arm (22), upper right conducting wire cross-arm (23)；And
The middle conducting wire cross-arm (24) cranked arm between (21) described in being fixed on two；
The three-phase conducting wire hanging point (5) in first circuit is separately positioned on the upper left conducting wire cross-arm (22), the upper right conducting wire
On cross-arm (23) and the middle conducting wire cross-arm (24).
3. three back transmission lines steel tower according to claim 2, which is characterized in that be located at the upper left conducting wire cross-arm (22)
I type insulator is correspondingly arranged on at the three-phase conducting wire hanging point (5) in first circuit on the upper right conducting wire cross-arm (23)
String is located at the three-phase conducting wire hanging point (5) in first circuit on the middle conducting wire cross-arm (24) and is correspondingly arranged on V-type insulation
Substring.
4. three back transmission lines steel tower according to claim 2, which is characterized in that be located at the upper left conducting wire cross-arm
(22), the three-phase conducting wire hanging point of the upper right conducting wire cross-arm (23) and first circuit on the middle conducting wire cross-arm (24)
(5) V-type insulator chain is correspondingly arranged at respectively.
5. three back transmission lines steel tower according to claim 1, which is characterized in that the lower wire cross-arm (4) includes a left side
Lower wire cross-arm (41) and bottom right conducting wire cross-arm (42)；
The lower-left conducting wire cross-arm (41) and the bottom right conducting wire cross-arm (42) respectively include the water being fixed on the tower body (1)
Flat conducting wire cross-arm and the cross-arm for being fixed on the horizontal wire cross arm end are cranked arm；
Wherein institute of two pairs of hanging point settings in the lower-left conducting wire cross-arm (41) of the three-phase conducting wire hanging point (6) of the second servo loop
It states on horizontal wire cross-arm, the setting of another pair hanging point is cranked arm and the tower body in the cross-arm of the lower-left conducting wire cross-arm (41)
(1) on；
Wherein institute of two pairs of hanging point settings in the bottom right conducting wire cross-arm (42) of the three-phase conducting wire hanging point (7) of the tertiary circuit
It states on horizontal wire cross-arm, the setting of another pair hanging point is cranked arm and the tower body in the cross-arm of the bottom right conducting wire cross-arm (42)
(1) on.
6. three back transmission lines steel tower according to claim 5, which is characterized in that in the three-phase conducting wire of the second servo loop
Hanging point is correspondingly arranged on V-type insulator chain at (6)；
V-type insulator chain is correspondingly arranged at the three-phase conducting wire hanging point (7) of the tertiary circuit.
7. three back transmission lines steel tower according to claim 1, which is characterized in that the lower wire cross-arm (4) is by angle steel
And/or steel pipe is constituted.
8. three back transmission lines steel tower according to claim 1-7, which is characterized in that the tower body (1) is by angle
Steel and/or steel pipe are constituted.
9. three back transmission lines steel tower according to claim 8, which is characterized in that the cross-sectional area of the tower body (1)
It is gradually reduced from bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820541753.7U CN208347419U (en) | 2018-04-16 | 2018-04-16 | A kind of novel three back transmission lines steel tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820541753.7U CN208347419U (en) | 2018-04-16 | 2018-04-16 | A kind of novel three back transmission lines steel tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208347419U true CN208347419U (en) | 2019-01-08 |
Family
ID=64886447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820541753.7U Active CN208347419U (en) | 2018-04-16 | 2018-04-16 | A kind of novel three back transmission lines steel tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208347419U (en) |
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2018
- 2018-04-16 CN CN201820541753.7U patent/CN208347419U/en active Active
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