CN219864357U - Double-circuit transmission line crossing tower - Google Patents
Double-circuit transmission line crossing tower Download PDFInfo
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- CN219864357U CN219864357U CN202321371449.XU CN202321371449U CN219864357U CN 219864357 U CN219864357 U CN 219864357U CN 202321371449 U CN202321371449 U CN 202321371449U CN 219864357 U CN219864357 U CN 219864357U
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Abstract
The utility model relates to the technical field of transmission towers, in particular to a double-circuit transmission line traversing tower which comprises a tower body, a tower head and a tower leg, wherein the tower head is positioned at the top of the tower body, and is characterized in that the tower head comprises a ground wire support, an upper wire cross arm and a lower wire cross arm which are sequentially arranged from top to bottom, the ground wire support is connected with the upper wire cross arm, the upper wire cross arm and the lower wire cross arm are arranged at intervals, and the distance between the top of the ground wire support and the bottom of the upper wire cross arm is as follows: the distance between the bottom of the upper wire cross arm and the bottom of the lower wire cross arm is 5:8. The utility model can solve the problem of higher tower head in the prior art.
Description
Technical Field
The utility model relates to the technical field of transmission towers, in particular to a double-circuit transmission line traversing tower.
Background
With the development of electric power industry in China, different electric transmission lines inevitably generate cross, particularly in areas and cities with developed economy in China, the electric power consumption is high, the electric power consumption density is high, a large amount of electric power supply is needed, and the electric transmission lines are limited by sites, so that the cross construction can be realized only by erecting crossing towers, for example, in the original power transmission lines running in the north-south direction, the cross construction of the east-west direction electric transmission lines is realized by erecting crossing towers lower than the electric transmission lines, and the cross and the crossing of the original power transmission lines running in the south-north direction are completed.
However, in actual power construction, most of the ground distance of the transmission line in initial construction only meets the standard requirement due to the restrictions of investment cost, terrain environment and the like, and enough crossing height is not reserved.
In order to solve the above problems, as shown in fig. 1, the prior art, such as chinese patent CN209780390U, provides an anti-icing tower special for a 35kV double-circuit overhead transmission line of a wind farm, where the structure of the tower head 1 includes a ground wire support 4, an upper wire cross arm 5, and a lower wire cross arm 6, and four lower wire hanging point groups are disposed on the lower wire cross arm 6. According to the technical scheme, the tower head structure is innovated, so that the average height of the wire hanging points and the tower height are reduced, and the transmission line is facilitated to be traversed. However, the technical scheme still has the problem that the tower head is higher, so that the crossing of the original transmission line is difficult to realize, and the height of the tower head needs to be further reduced.
Disclosure of Invention
The utility model provides a double-circuit transmission line traversing tower, which can solve the problem of higher tower head in the prior art.
The utility model provides the following technical scheme:
the utility model provides a tower is passed through to two power transmission lines, includes the body of a tower, is located tower head and the tower leg at body of a tower top, the tower head has set gradually ground wire support, last wire cross arm and lower wire cross arm from the top down, the ground wire support with go up the wire cross arm links to each other, go up the wire cross arm with lower wire cross arm interval sets up, distance between ground wire support top and the last wire cross arm bottom: the distance between the bottom of the upper wire cross arm and the bottom of the lower wire cross arm is 5:8.
Technical principle and beneficial effect:
1. the tower head height is effectively reduced: according to the scheme, the ground wire support is connected with the upper wire cross arm, so that a tower body structural unit used for connecting the ground wire support with the upper wire cross arm in the prior art is removed, the effect of reducing the height of the tower head is achieved, and the crossing of an original power transmission line is facilitated.
2. Is beneficial to saving the cost: according to the scheme, the tower body structural unit used for connecting the ground wire support and the upper wire cross arm is removed, so that the structure of the crossing tower is simplified, and the construction cost is lower.
3. Is favorable for optimizing the tower head structure: this scheme is through prescribing a limit to the distance between ground wire support top and the upper wire cross arm bottom: the distance between the bottom of the upper wire cross arm and the bottom of the lower wire cross arm is 5:8, so that the electric safety of the ground wire support and the upper and lower cross arms can be met, the distribution of the ground wire support and the upper and lower cross arms can be improved, the tower head structure is more compact and stable, and the bearing capacity of the tower head is improved.
Further, the length of the single side of the upper wire cross arm is smaller than that of the single side of the ground wire support, and the length of the single side of the ground wire support is smaller than that of the single side of the lower wire cross arm.
The beneficial effects are that: the scheme sets the length of the single side of the upper wire cross arm to be the shortest, so that the function of the upper wire cross arm can be ensured, and the cost can be reduced; because the lower wire cross arm needs to be uniformly provided with four hanging wire points to meet the requirement of a double-circuit transmission line, the scheme sets the length of one side of the lower wire cross arm to be longest, is favorable for ensuring the distance between the lower wires, and further improves the electrical safety. In addition, this scheme sets up the unilateral length of ground wire support longer, on the one hand can enough guarantee the function of ground wire support lightning protection, on the other hand, can prolong the interval of ground wire and last wire, prevents the short circuit, improves the electrical safety of ground wire.
Further, the distance between the top of the ground wire support and the bottom of the upper wire cross arm is 2500mm, and the distance between the bottom of the upper wire cross arm and the bottom of the lower wire cross arm is 4000mm.
The beneficial effects are that: the arrangement is beneficial to reducing the height of the tower head, realizing the crossing of the original transmission line and reducing the cost on one hand; on the other hand, through proper distance setting, the safety accidents such as short circuit and the like of the ground wire and the upper and lower wires can be avoided, and the electrical safety of the circuit is improved.
Further, the distance from the outer corner side end point of the ground wire support to the center line of the tower body is 6000mm, the distance from the inner corner side end point of the ground wire support to the center line of the tower body is 5500mm, the distance from the outer corner side end point of the upper wire cross arm to the center line of the tower body is 4000mm, the distance from the inner corner side end point of the upper wire cross arm to the center line of the tower body is 3500mm, the distance from the outer corner side end point of the lower wire cross arm to the center line of the tower body is 7000mm, and the distance from the inner corner side end point of the lower wire cross arm to the center line of the tower body is 6500mm.
The beneficial effects are that: the arrangement meets the length requirements of the ground wire support, the upper wire cross arm and the lower wire cross arm, and the safety of a circuit can be improved. Meanwhile, the space utilization rate of the circuit and the structural design of the circuit are optimized.
Further, connect through coupling assembling between ground wire support, last wire cross arm, the body of a tower, coupling assembling includes inboard connecting plate and outside welded plate, carry out bolted connection between inboard connecting plate and ground wire support, last wire cross arm, the body of a tower, carry out welded connection between outside welded plate and ground wire support, last wire cross arm, the body of a tower, outside welded plate is located the inboard connecting plate outside.
The beneficial effects are that: by arranging the inner connecting plate and the outer welding plate, the ground wire support, the upper wire cross arm and the tower body are stably and firmly connected, so that the reliability and the safety of the crossing tower are ensured.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic diagram of a dual circuit transmission line traversing tower according to an embodiment of the present utility model;
FIG. 3 is an enlarged view of FIG. 2 at A;
fig. 4 is a view 1-1 of fig. 3.
Detailed Description
The following is a further detailed description of the embodiments:
the labels in the drawings of this specification include: the tower head 1, the tower body 2, the tower leg 3, the ground wire support 4, the ground wire support outer corner side 41, the ground wire support inner corner side 42, the upper wire cross arm 5, the upper wire cross arm outer corner side 51, the upper wire cross arm inner corner side 52, the lower wire cross arm 6, the lower wire cross arm outer corner side 61, the lower wire cross arm inner corner side 62, the first ground wire hanging point 71, the second ground wire hanging point 72, the first upper wire hanging point 81, the second upper wire hanging point 82, the first lower wire hanging point 91, the second lower wire hanging point 92, the third lower wire hanging point 93, the fourth lower wire hanging point 94, the inner connecting plate 21 and the outer welding plate 22.
Example 1
As shown in fig. 2, a double-circuit transmission line traversing tower comprises a tower head 1, a tower body 2 and tower legs 3, wherein the tower head 1 is positioned at the top of the tower body 2, and the tower legs 3 are positioned at the bottom of the tower body 2.
The tower head 1 comprises a ground wire bracket 4, an upper wire cross arm 5 and a lower wire cross arm 6 which are sequentially arranged from top to bottom. Specifically, the ground wire support 4 is connected with the upper wire cross arm 5 to achieve the effect of reducing the height of the tower head 1, and the upper wire cross arm 5 and the lower wire cross arm 6 are arranged at intervals. As shown in fig. 3 and 4, the ground wire bracket 4, the upper wire cross arm 5 and the tower body 2 are connected by a connecting assembly, and the connecting assembly comprises an inner connecting plate 21 and an outer welding plate 22. Specifically, a plurality of bolt holes are formed in the inner connecting plate 21, the inner connecting plate 21 is fixedly connected with the ground wire support 4, the upper wire cross arm 5 and the support rod of the tower body 2 through a plurality of bolts, the outer welding plate 22 is located on the outer side of the inner connecting plate, and the outer welding plate 22 is welded with the root parts of the ground wire support 4, the upper wire cross arm 5 and the support rod of the tower body 2.
In this embodiment, the distance between the top of the ground wire bracket 4 and the bottom of the upper wire cross arm 5: the distance between the bottom of the upper wire cross arm 5 and the bottom of the lower wire cross arm 6 is 5:8, specifically, the distance between the top of the ground wire support 4 and the bottom of the upper wire cross arm 5 is 2500mm, the distance between the bottom of the upper wire cross arm 5 and the bottom of the lower wire cross arm 6 is 4000mm, and the distance between the top of the ground wire support 4 and the bottom of the lower wire cross arm 6 is 6500mm. In addition, in this example, the total column height of the traversing column is 33500mm.
In this embodiment, as shown in fig. 2, the ground wire support 4 is located at two sides of the tower body 2 and is divided into a ground wire support inner angle side 42 and a ground wire support outer angle side 41, the ground wire support 4 is in an inverted triangle shape on the whole, the length of the ground wire support outer angle side 41 is greater than that of the ground wire support inner angle side 42, specifically, the distance from the end point of the ground wire support outer angle side 41 to the central line of the tower body 2 is 6000mm, and the distance from the end point of the ground wire support inner angle side 42 to the central line of the tower body 2 is 5500mm. In addition, a ground wire hanging point is respectively arranged on the end points of the ground wire support outer corner side 41 and the ground wire support inner corner side 42, and is respectively a first ground wire hanging point 71 positioned on the ground wire support outer corner side 41 and a second ground wire hanging point 72 positioned on the ground wire support inner corner side 42.
In this embodiment, the two sides of the upper wire cross arm 5 located on the tower body 2 are divided into an upper wire cross arm inner angle side 52 and an upper wire cross arm outer angle side 51, the inner and outer angle sides of the upper wire cross arm 5 are overall regular triangle, and the length of the upper wire cross arm outer angle side 51 is greater than that of the upper wire cross arm inner angle side 52, specifically, the distance from the end point of the upper wire cross arm outer angle side 51 to the central line of the tower body 2 is 4000mm, and the distance from the end point of the upper wire cross arm inner angle side 52 to the central line of the tower body 2 is 3500mm. In addition, the end points of the outer corner side 51 and the inner corner side 52 of the upper wire cross arm are respectively provided with a wire hanging point, namely a first upper wire hanging point 81 positioned on the outer corner side 51 of the upper wire cross arm and a second upper wire hanging point 82 positioned on the inner corner side 52 of the upper wire cross arm.
In this embodiment, the two sides of the lower wire cross arm 6 located on the tower body 2 are divided into an inner angle side of the lower wire cross arm 6 and an outer angle side 61 of the lower wire cross arm, the inner and outer angle sides of the lower wire cross arm 6 are in a regular triangle shape as a whole, and the length of the outer angle side 61 of the lower wire cross arm is greater than that of the inner angle side 62 of the lower wire cross arm, specifically, the distance from the end point of the outer angle side 41 of the ground wire support to the central line of the tower body 2 is 7000mm, and the distance from the end point of the inner angle side 62 of the lower wire cross arm to the central line of the tower body 2 is 6500mm. In addition, the lower wire cross arm 6 is provided with four wire hanging points at intervals from the end point of the outer corner side 61 of the lower wire cross arm to the end point of the inner corner side 62 of the lower wire cross arm, specifically, the four wire hanging points are divided into a first lower wire hanging point 91, a second lower wire hanging point 92, a third lower wire hanging point 93 and a fourth lower wire hanging point 94, wherein the first lower wire hanging point 91 is located at the end point of the outer corner side 61 of the lower wire cross arm, the fourth lower wire hanging point 94 is located at the end point of the inner corner side 62 of the lower wire cross arm, the second lower wire hanging point 92 is located between the first lower wire hanging point 91 and the tower body 2 and is 3500mm away from the first lower wire hanging point 91, and the third lower wire hanging point 93 is located between the tower body 2 and the fourth lower wire hanging point 94 and is 3500mm away from the fourth lower wire hanging point 94.
According to the scheme, the ground wire support 4 is connected with the upper wire cross arm 5, so that a tower body structural unit used for connecting the ground wire support 4 with the upper wire cross arm 5 in the prior art is removed, the effect of reducing the height of the tower head 1 is achieved, and the crossing of an original power transmission line is facilitated. In addition, the scheme optimizes the circuit layout, so that the circuit layout is more compact, and a large amount of space is saved.
The above is merely an embodiment of the present utility model, and the present utility model is not limited to the field of the present embodiment, but the specific structure and characteristics of the present utility model are not described in detail. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (5)
1. The double-circuit transmission line crossing tower comprises a tower body, a tower head and a tower leg, wherein the tower head is positioned at the top of the tower body, and is characterized in that the tower head comprises a ground wire support, an upper wire cross arm and a lower wire cross arm which are sequentially arranged from top to bottom, the ground wire support is connected with the upper wire cross arm, and the upper wire cross arm and the lower wire cross arm are arranged at intervals; distance between ground wire support top and the upper wire cross arm bottom: the distance between the bottom of the upper wire cross arm and the bottom of the lower wire cross arm is 5:8.
2. A dual return line traversing tower according to claim 1, wherein: the length of the single side of the upper wire cross arm is smaller than that of the single side of the ground wire support, and the length of the single side of the ground wire support is smaller than that of the single side of the lower wire cross arm.
3. A dual return line traversing tower according to claim 2, wherein: the distance between the top of the ground wire support and the bottom of the upper wire cross arm is 2500mm, and the distance between the bottom of the upper wire cross arm and the bottom of the lower wire cross arm is 4000mm.
4. A dual return line traversing tower according to claim 3, wherein: the distance from the outer corner side end point of the ground wire support to the tower body central line is 6000mm, the distance from the inner corner side end point of the ground wire support to the tower body central line is 5500mm, the distance from the outer corner side end point of the upper wire cross arm to the tower body central line is 4000mm, the distance from the inner corner side end point of the upper wire cross arm to the tower body central line is 3500mm, the distance from the outer corner side end point of the lower wire cross arm to the tower body central line is 7000mm, and the distance from the inner corner side end point of the lower wire cross arm to the tower body central line is 6500mm.
5. A dual return line traversing tower according to claim 4, wherein: the ground wire support, the upper wire cross arm and the tower body are connected through a connecting assembly, the connecting assembly comprises an inner connecting plate and an outer welding plate, the inner connecting plate is connected with the ground wire support, the upper wire cross arm and the tower body through bolts, the outer welding plate is connected with the ground wire support, the upper wire cross arm and the tower body through welding, and the outer welding plate is located outside the inner connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321371449.XU CN219864357U (en) | 2023-05-31 | 2023-05-31 | Double-circuit transmission line crossing tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321371449.XU CN219864357U (en) | 2023-05-31 | 2023-05-31 | Double-circuit transmission line crossing tower |
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| CN219864357U true CN219864357U (en) | 2023-10-20 |
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| CN202321371449.XU Active CN219864357U (en) | 2023-05-31 | 2023-05-31 | Double-circuit transmission line crossing tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753704A (en) * | 2022-05-19 | 2022-07-15 | 中国电建集团河北省电力勘测设计研究院有限公司 | Triangular-arrangement 500kV double-loop strain drill crossing tower |
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2023
- 2023-05-31 CN CN202321371449.XU patent/CN219864357U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753704A (en) * | 2022-05-19 | 2022-07-15 | 中国电建集团河北省电力勘测设计研究院有限公司 | Triangular-arrangement 500kV double-loop strain drill crossing tower |
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