CN209924555U - 220kV single-loop strain drill crossing tower - Google Patents
220kV single-loop strain drill crossing tower Download PDFInfo
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- CN209924555U CN209924555U CN201920605879.0U CN201920605879U CN209924555U CN 209924555 U CN209924555 U CN 209924555U CN 201920605879 U CN201920605879 U CN 201920605879U CN 209924555 U CN209924555 U CN 209924555U
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Abstract
The utility model provides a 220kV single-loop strain drill crossing tower, which comprises a tower head, a tower body and tower legs, wherein the tower head comprises an upper top frame cross arm and a lower single-layer wire cross arm; the tail end of the cross arm of the top frame is provided with a ground wire hanging point; a wire hanging point is arranged at the single-layer wire cross arm; the top frame cross arm or the single-layer wire cross arm is of a left-right asymmetric structure; the utility model discloses carried out great improvement in the aspect of atress performance, overall modeling, comprehensive economic indicator etc..
Description
Technical Field
The utility model belongs to the technical field of the power equipment technique and specifically relates to a 220kV single loop strain insulator bores tower more.
Background
In recent years, with the high-speed increase of economy in China, the voltage level of a power transmission line is continuously increased, and built lines are dense, so that the problems that a newly-built line has no path and can run, the investment cost is greatly increased, the construction difficulty is high, the operation and maintenance are inconvenient, and the like exist. Therefore, newly built lines often need to be drilled over the old built lines, and the scheme of drilling over the built lines by using the tower drilling is an effective scheme for relieving tension of line corridors and improving economic rationality of the lines. Particularly, the method has obvious economic and social benefits for areas with developed economy, expensive land and dense houses. The structural arrangements commonly employed to drill over towers have the following characteristics:
(1) the conventional single-loop wine cup type strain drill gets over the tower, because the conducting wires are horizontally arranged in three phases, the tower window is large, the occupied line corridor is large, and meanwhile, because the longitudinal thickness of the cross arm is large, the weight of the iron tower is large;
(2) the conventional single-loop dry-shaped tension drill crosses the tower frame, and a middle phase lead is hung on the tower body, so that the height of the whole tower is higher, the wind load effect of the tower body is increased, and the steel consumption is increased.
Disclosure of Invention
The utility model provides a 220kV single loop strain insulator bores tower more, has carried out great improvement in the aspect of atress performance, overall modeling, comprehensive economic indicator etc..
The utility model adopts the following technical scheme.
A220 kV single-loop strain drill crossing tower comprises a tower head, a tower body and tower legs, wherein the tower head comprises an upper top frame cross arm and a lower single-layer wire cross arm; the tail end of the cross arm of the top frame is provided with a ground wire hanging point; a wire hanging point is arranged at the single-layer wire cross arm;
the top frame cross arm or the single-layer wire cross arm is of a left-right asymmetric structure.
The left side of the wire cross arm is provided with a left hanging point, and the right side of the wire cross arm is provided with a middle hanging point and a right hanging point; and a jumper wire hanging point is arranged at the right end part of the single-layer wire cross arm.
A ground wire is arranged at the cross arm of the top frame; 220kV single-phase wires are distributed on the left side of the single-layer wire cross arm through a left phase hanging point; and 220kV double-phase wires are horizontally arranged on the right side of the single-layer wire cross arm through the middle phase hanging point and the right phase hanging point.
The tower body is isosceles trapezoid, the tower leg is the leg bearing structure of not high uniform height.
The root opening range of the tower leg is 5351mm-6000 mm.
The width of the upper part of the tower body is 2000 mm.
The main material of the crossing tower is equal-angle steel made of Q345B material, the oblique material and the auxiliary material are equal-angle steel made of Q235B or Q345B, and the oblique material and the auxiliary material are connected with the main material through gusset plates.
Compare with the conventional pylon that crosses that bores, the utility model has the advantages of it is following:
(1) optimizing the arrangement pattern of the wire cross arms: on the premise of meeting the design requirements of electrical insulation matching and lightning protection, the optimized three-phase wire cross arm is arranged on the same layer of cross arm, one phase is arranged on the left side, two phases are horizontally arranged on the right side, and compared with a dry-character strain drill crossing tower with a conventional wire in which a tower body is hung, the height of the whole tower can be reduced, the wind load effect is reduced, and the manufacturing cost of the body is reduced.
(2) The occupied area is reduced: the total length of the cross arms is reduced through the optimized arrangement of the cross arms, so that the width of the corridor is saved by about 15 percent compared with the conventional crossing tower of the wine glass strain drill, and the occupied area of an overhead line is reduced.
(3) Reducing earth excavation: by arranging the unequal-height legs, long and short legs can be configured according to the field terrain conditions, the earth excavation amount is reduced to the maximum extent, and the requirement that the base surface excavation is not basically carried out under the engineering terrain conditions can be met.
(4) The comprehensive economic index is more excellent: by integrating the wires on the same layer of cross arm, the height of the whole tower is reduced, the wind load effect is reduced, the width of the corridor is saved compared with that of the conventional wine glass tower, the earth excavation amount is reduced by the long leg and the short leg, and the comprehensive manufacturing cost is effectively reduced by the method.
Drawings
The invention will be described in further detail with reference to the following drawings and detailed description:
FIG. 1 is a schematic diagram of the present invention;
in the figure: 1-ground wire hanging point; 2-left hanging point; 3-middle phase hanging point; 4-right hanging point; 5-a jumper hanging point;
100-tower head; 200-a tower body; 300-tower legs; 400-top frame cross arm; 500-single layer wire cross arm.
Detailed Description
As shown in fig. 1, a 220kV single-loop strain drill crossing tower comprises a tower head 100, a tower body 200 and tower legs 300, wherein the tower head comprises an upper top frame cross arm 400 and a lower single-layer wire cross arm 500; the tail end of the cross arm of the top frame is provided with a ground wire hanging point 1; a wire hanging point is arranged at the single-layer wire cross arm;
the top frame cross arm or the single-layer wire cross arm is of a left-right asymmetric structure.
The left side of the wire cross arm is provided with a left hanging point 2, and the right side of the wire cross arm is provided with a middle hanging point 3 and a right hanging point 4; and a jumper wire hanging point 5 is arranged at the right end part of the single-layer wire cross arm.
A ground wire is arranged at the cross arm of the top frame; 220kV single-phase wires are distributed on the left side of the single-layer wire cross arm through a left phase hanging point; and 220kV double-phase wires are horizontally arranged on the right side of the single-layer wire cross arm through the middle phase hanging point and the right phase hanging point.
The tower body is isosceles trapezoid, the tower leg is the leg bearing structure of not high uniform height.
The root opening range of the tower leg is 5351mm-6000 mm.
The width of the upper part of the tower body is 2000 mm.
The main material of the crossing tower is equal-angle steel made of Q345B material, the oblique material and the auxiliary material are equal-angle steel made of Q235B or Q345B, and the oblique material and the auxiliary material are connected with the main material through gusset plates.
When the power transmission line is wired, the ground wire is erected on the cross arm of the top frame; the single-layer wire cross arm left side of below arranges 220kV single-phase wire, and the level of right side arranges 220kV diphase wire.
Claims (7)
1. The utility model provides a 220kV single loop strain insulator bores tower of crossing, includes tower head, body of the tower and tower leg, its characterized in that: the tower head comprises an upper top frame cross arm and a lower single-layer wire cross arm; the tail end of the cross arm of the top frame is provided with a ground wire hanging point; a wire hanging point is arranged at the single-layer wire cross arm;
the top frame cross arm or the single-layer wire cross arm is of a left-right asymmetric structure.
2. The 220kV single-circuit tension drill crossing tower of claim 1, wherein: the left side of the wire cross arm is provided with a left hanging point, and the right side of the wire cross arm is provided with a middle hanging point and a right hanging point; and a jumper wire hanging point is arranged at the right end part of the single-layer wire cross arm.
3. The 220kV single-circuit tension drill crossing tower of claim 2, wherein: a ground wire is arranged at the cross arm of the top frame; 220kV single-phase wires are distributed on the left side of the single-layer wire cross arm through a left phase hanging point; and 220kV double-phase wires are horizontally arranged on the right side of the single-layer wire cross arm through the middle phase hanging point and the right phase hanging point.
4. The 220kV single-circuit tension drill crossing tower of claim 1, wherein: the tower body is isosceles trapezoid, the tower leg is the leg bearing structure of not high uniform height.
5. The 220kV single-circuit tension drill crossing tower of claim 4, wherein: the root opening range of the tower leg is 5351mm-6000 mm.
6. The 220kV single-circuit tension drill crossing tower of claim 5, wherein: the width of the upper part of the tower body is 2000 mm.
7. The 220kV single-circuit tension drill crossing tower of claim 5, wherein: the main material of the crossing tower is equal-angle steel made of Q345B material, the oblique material and the auxiliary material are equal-angle steel made of Q235B or Q345B, and the oblique material and the auxiliary material are connected with the main material through gusset plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920605879.0U CN209924555U (en) | 2019-04-29 | 2019-04-29 | 220kV single-loop strain drill crossing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920605879.0U CN209924555U (en) | 2019-04-29 | 2019-04-29 | 220kV single-loop strain drill crossing tower |
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| Publication Number | Publication Date |
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| CN209924555U true CN209924555U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920605879.0U Active CN209924555U (en) | 2019-04-29 | 2019-04-29 | 220kV single-loop strain drill crossing tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111682483A (en) * | 2020-07-02 | 2020-09-18 | 国核电力规划设计研究院有限公司 | Transmission line drilling tower and transmission line tower system |
| CN111682479A (en) * | 2020-07-02 | 2020-09-18 | 国核电力规划设计研究院有限公司 | Single-loop power transmission line iron tower and power transmission line tower system |
-
2019
- 2019-04-29 CN CN201920605879.0U patent/CN209924555U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111682483A (en) * | 2020-07-02 | 2020-09-18 | 国核电力规划设计研究院有限公司 | Transmission line drilling tower and transmission line tower system |
| CN111682479A (en) * | 2020-07-02 | 2020-09-18 | 国核电力规划设计研究院有限公司 | Single-loop power transmission line iron tower and power transmission line tower system |
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