CN216740925U - Four-loop aerial cable terminal tower - Google Patents
Four-loop aerial cable terminal tower Download PDFInfo
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- CN216740925U CN216740925U CN202220180310.6U CN202220180310U CN216740925U CN 216740925 U CN216740925 U CN 216740925U CN 202220180310 U CN202220180310 U CN 202220180310U CN 216740925 U CN216740925 U CN 216740925U
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Abstract
According to the four-loop overhead cable terminal tower, a tower body is sequentially provided with a ground wire cross arm, a lead wire cross arm and a down-leading platform from top to bottom; the wire cross arms are sequentially provided with 6 layers, and the end parts of the wire cross arms from the fourth layer to the sixth layer are provided with down-leading points; the first layer of wire cross arm is provided with a first auxiliary cross arm, and the end part of the first auxiliary cross arm is provided with a first down-leading point; the second layer of wire cross arm is provided with a second auxiliary cross arm, and the end part of the second auxiliary cross arm is provided with a second down-leading point; the third layer of wire cross arm is provided with a third auxiliary cross arm, and the end part of the third auxiliary cross arm is provided with a third down-leading point; the projection of the down-leading point, the first down-leading point, the second down-leading point and the third down-leading point on the down-leading platform is octagonal. The utility model saves the economic cost while meeting the requirement of each phase of wire insulation.
Description
Technical Field
The utility model belongs to the field of power transmission line engineering, and particularly relates to a four-loop overhead cable terminal tower.
Background
In recent years, with the continuous development of domestic economy, corresponding domestic power industry is also continuously advancing, and an urban power grid needs to be continuously expanded, so that a multi-loop power transmission line is frequently adopted at present.
The transmission line plays an important role in transmitting power energy in a power system, and can adopt two main forms of overhead and cable. The overhead line is characterized in that a live conductor is hung on a tower, and the live conductor is arranged in a suspended manner so as to meet the requirement of a discharge gap, so that the comprehensive investment is low; the cable line is to wrap the electrified conductor with insulating materials and arrange the electrified conductor on the ground or underground, so that the comprehensive investment is high.
In areas with complex external construction conditions, cables and overhead hybrid power transmission lines need to be used, and in the hybrid power transmission lines, the cable terminal towers play a role in converting overhead into cables.
The existing four-loop cable terminal tower generally adopts a rod tower and a lattice tower. Low voltage grades typically employ a tower of the pole type. When the voltage level is higher (such as 220kV), a lattice tower is mostly adopted to meet the load requirement.
The down-lead points of the lattice tower multi-layer cross arm are basically arranged in a plane, and it is difficult to maintain a sufficient insulation distance among 12 down-lead wires in space. Meanwhile, because the load is large, a cable outdoor terminal and a lightning arrester with large size need to be arranged to connect each phase of wire, the size of a cable platform for correspondingly placing the cable outdoor terminal and the lightning arrester is large, the width of a tower body range is large, the width of a line corridor is large, the bottom of an iron tower is large in root opening, the occupied area is large, and the land acquisition cost is high. Moreover, the influence on the surrounding environment during foundation construction is also large.
Therefore, how to design a four-loop overhead cable terminal tower which meets the lead-down requirement and saves occupied land becomes a problem to be solved urgently in the industry.
SUMMERY OF THE UTILITY MODEL
To solve the above problems, the present invention provides a four-loop aerial cable termination tower.
The technical means adopted by the utility model are as follows.
The four-loop overhead cable terminal tower comprises a tower body, wherein a ground wire cross arm, 6 layers of lead cross arms and a down-leading platform are sequentially arranged on the tower body from top to bottom; the 6 layers of wire cross arms are a first wire cross arm, a second layer of wire cross arm, a third layer of wire cross arm, a fourth layer of wire cross arm, a fifth layer of wire cross arm and a sixth layer of wire cross arm from top to bottom in sequence; the end part of the fourth layer of wire cross arm is provided with a fourth down-leading point, the end part of the fifth layer of wire cross arm is provided with a fifth down-leading point, and the end part of the sixth layer of wire cross arm is provided with a sixth down-leading point; the down-leading platform is provided with a cable terminal and a lightning rod; the first layer of wire cross arm is provided with a first auxiliary cross arm, and the end part of the first auxiliary cross arm is provided with a first down-leading point; the second layer of wire cross arm is provided with a second auxiliary cross arm, and the end part of the second auxiliary cross arm is provided with a second down-leading point; the third layer of wire cross arm is provided with a third auxiliary cross arm, and the end part of the third auxiliary cross arm is provided with a third down-leading point; the projection points of the first down-leading point, the second down-leading point, the third down-leading point, the fourth down-leading point, the fifth down-leading point and the sixth down-leading point on the down-leading platform are distributed on an octagon.
The first auxiliary cross arm is T-shaped, two end parts of a horizontal part of the first auxiliary cross arm are respectively provided with a first down-leading point, and a vertical part is vertically connected with the middle part of the first layer of wire cross arm; the number of the second auxiliary cross arms is two, and the second auxiliary cross arms are respectively and vertically connected with the corresponding second layer of wire cross arms; the number of the third auxiliary cross arms is two, the third auxiliary cross arms are arranged in the horizontal extending direction of the wires and are respectively and vertically connected with the end parts of the corresponding third layer of wire cross arms.
The first layer of wire cross arm and the first auxiliary cross arm are positioned on the same horizontal plane; the second layer of wire cross arm and the second auxiliary cross arm are positioned on the same horizontal plane; the third layer of wire cross arm and the third auxiliary cross arm are positioned on the same horizontal plane.
The length of the horizontal part of the first auxiliary cross arm is less than that of the vertical part; the lengths of the two second auxiliary cross arms are the same; the length of the two third auxiliary cross arms is the same.
The tower body is in a rod type or lattice type.
The technical effects produced by the utility model are as follows:
1. the four-loop overhead cable terminal tower provided by the utility model enables each phase of conductor to be vertically led down from the most appropriate position, and meets the insulation requirement.
2. According to the four-loop aerial cable terminal tower provided by the utility model, the projection point of each down-leading point on the horizontal plane is octagonal, so that the size required by the down-leading platform at the lower part of the tower body is reduced, and the cost is saved.
3. The four-loop overhead cable terminal tower provided by the utility model has the advantages that the width of a line corridor is reduced, the occupied area is reduced, and the land acquisition cost is saved.
4. The four-loop aerial cable terminal tower provided by the utility model is suitable for a rod-type tower body and a lattice-type tower body.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a projection of the down-lead point of the present invention on a horizontal plane.
Detailed Description
Referring to fig. 1 and 2, the four-loop aerial cable terminal tower includes a tower body 1, and a ground wire cross arm 2, a wire cross arm, and a down-leading platform 4 are sequentially disposed on the tower body 1 from top to bottom.
The wire cross arm is provided with 6 layers from top to bottom, namely a first layer wire cross arm 31, a second layer wire cross arm 32, a third layer wire cross arm 33, a fourth layer wire cross arm 34, a fifth layer wire cross arm 35 and a sixth layer wire cross arm 36.
The first layer of wire cross arm 31 is provided with a first auxiliary cross arm 311, the first auxiliary cross arm 311 is T-shaped, two ends of the horizontal part of the first auxiliary cross arm 311 are respectively provided with a first down-leading point 312, and the vertical part is vertically connected with the middle part of the first layer of wire cross arm 31. The horizontal portion of the first auxiliary cross arm 311 has a length smaller than that of the vertical portion thereof. The first layer of conducting wire cross arm 31 and the first auxiliary cross arm 311 are located on the same horizontal plane.
The second layer of wire cross arms 32 are provided with two second auxiliary cross arms 321, and the two second auxiliary cross arms 321 are respectively and vertically connected with the corresponding second layer of wire cross arms 32. The end of each of the 2 second auxiliary cross arms 321 is provided with a second down-guiding point 322. The second layer of wire cross arm 32 and the second auxiliary cross arm 321 are on the same horizontal plane. The two second auxiliary cross arms 321 have the same length.
The third layer of conducting wire cross arm 33 is provided with two third auxiliary cross arms 331, and the third auxiliary cross arms 331 are arranged in the horizontal extending direction of the conducting wire and are respectively vertically connected with the end parts of the corresponding third layer of conducting wire cross arms 33. The 2 third auxiliary cross arms 331 are respectively provided with a third down-lead point 332 at the end. The third layer of wire cross arm 33 and the third auxiliary cross arm 331 are on the same horizontal plane. The two third auxiliary cross arms 331 have the same length.
The end parts of the fourth layer of wire cross arm 34 are respectively provided with a fourth down-lead point 341; the end of the fifth layer wire cross arm 35 is respectively provided with a fifth down-lead point 351; the ends of the sixth layer of conductive cross arm 36 are each provided with a sixth down-lead 361.
The projections of the first down-guiding point 312, the second down-guiding point 322, the third down-guiding point 332, the fourth down-guiding point 341, the fifth down-guiding point 351 and the sixth down-guiding point 361 on the down-guiding platform 4 are octagonal.
The down-lead platform 4 is provided with a cable terminal 5 and a lightning rod 6. Each layer of wires is vertically led down through the corresponding down-leading point, and then is led underground after being connected with the cable terminal 5 and the lightning rod 6.
The tower body 1 is in a rod type or lattice type. The rod-type tower body occupies a small area, the lattice-type tower body can bear a large load, and the lattice-type tower body can be flexibly selected according to actual requirements in actual use.
Claims (5)
1. The four-loop aerial cable terminal tower comprises a tower body (1), wherein a ground wire cross arm (2), 6 layers of lead cross arms and a down-leading platform (4) are sequentially arranged on the tower body (1) from top to bottom;
the 6 layers of wire cross arms are a first layer of wire cross arm (31), a second layer of wire cross arm (32), a third layer of wire cross arm (33), a fourth layer of wire cross arm (34), a fifth layer of wire cross arm (35) and a sixth layer of wire cross arm (36) from top to bottom in sequence;
a fourth down-leading point (341) is arranged at the end part of the fourth layer of the lead cross arm (34), a fifth down-leading point (351) is arranged at the end part of the fifth layer of the lead cross arm (35), and a sixth down-leading point (361) is arranged at the end part of the sixth layer of the lead cross arm (36);
the down-leading platform (4) is provided with a cable terminal (5) and a lightning rod (6);
the first layer of wire cross arm (31) is provided with a first auxiliary cross arm (311), and the end part of the first auxiliary cross arm (311) is provided with a first down-leading point (312);
the second layer of wire cross arm (32) is provided with a second auxiliary cross arm (321), and the end part of the second auxiliary cross arm (321) is provided with a second down-leading point (322);
a third auxiliary cross arm (331) is arranged on the third layer of wire cross arm (33), and a third down-leading point (332) is arranged at the end part of the third auxiliary cross arm (331);
the projection points of the first down-leading point (312), the second down-leading point (322), the third down-leading point (332), the fourth down-leading point (341), the fifth down-leading point (351) and the sixth down-leading point (361) on the down-leading platform (4) are distributed on an octagon.
2. The four-circuit aerial cable terminal tower according to claim 1, characterized in that the first auxiliary cross-arm (311) is T-shaped, that both ends of the horizontal part of the first auxiliary cross-arm (311) are provided with first down-lead points (312), and that the vertical part is vertically connected to the middle part of the first layer of wire cross-arm (31);
the number of the second auxiliary cross arms (321) is two, and the second auxiliary cross arms are respectively and vertically connected with the corresponding second layer of wire cross arms (32);
the number of the third auxiliary cross arms (331) is two, the third auxiliary cross arms are arranged in the horizontal extending direction of the conducting wires and are respectively vertically connected with the end parts of the corresponding third-layer conducting wire cross arms (33).
3. The four-loop overhead cable termination tower according to claim 2, wherein the first layer of conductor cross-arms (31) is level with the first auxiliary cross-arm (311); the second layer of wire cross arm (32) and the second auxiliary cross arm (321) are positioned on the same horizontal plane; the third layer of wire cross arm (33) and the third auxiliary cross arm (331) are positioned on the same horizontal plane.
4. The four-circuit aerial cable termination tower according to claim 2, wherein the horizontal section of the first auxiliary cross arm (311) has a length less than the vertical section; the two second auxiliary cross arms (321) have the same length; the two third auxiliary cross arms (331) are the same length.
5. The four-circuit overhead cable termination tower according to claim 1, characterized in that the tower body (1) is of the rod or lattice type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220180310.6U CN216740925U (en) | 2022-01-21 | 2022-01-21 | Four-loop aerial cable terminal tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220180310.6U CN216740925U (en) | 2022-01-21 | 2022-01-21 | Four-loop aerial cable terminal tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216740925U true CN216740925U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220180310.6U Active CN216740925U (en) | 2022-01-21 | 2022-01-21 | Four-loop aerial cable terminal tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216740925U (en) |
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2022
- 2022-01-21 CN CN202220180310.6U patent/CN216740925U/en active Active
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