CN211720241U - Lightning-protection tower for long-span transmission line - Google Patents
Lightning-protection tower for long-span transmission line Download PDFInfo
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- CN211720241U CN211720241U CN202020655358.9U CN202020655358U CN211720241U CN 211720241 U CN211720241 U CN 211720241U CN 202020655358 U CN202020655358 U CN 202020655358U CN 211720241 U CN211720241 U CN 211720241U
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- insulator
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Abstract
The utility model discloses a lightning rod tower for large-span transmission lines, which comprises a large-span rod tower, wherein the top end of the large-span rod tower is provided with a lightning rod insulator and an insulator string, a lightning rod is suspended on the lightning rod insulator, and a lead is suspended at the bottom end of the insulator string; the middle part of the large-span tower is also provided with an auxiliary cross arm, an auxiliary insulator is arranged on the auxiliary cross arm, and an auxiliary lightning conductor is hung on the auxiliary insulator. The utility model discloses stride across power transmission line greatly with lightning rod tower can prevent to stride across circuit tripping operation and equipment damage that power transmission line leads to because of the thunderbolt greatly.
Description
Technical Field
The utility model relates to an overhead transmission line lightning protection technical field especially relates to a stride across lightning rod tower for power transmission line greatly.
Background
The large-span power transmission line appears in special landforms such as large rivers, large reservoirs, lakes, canyons and deep trenches spanned by the power channel, and has the characteristics of high pole tower height and large distance between a lead and the ground. The large-span transmission line has a large ground height, so that the lightning triggering effect is obvious, the wave resistance is large due to the height of the tower, and the lightning counterattack tripping rate is increased; in addition, the conductor of the large-span power transmission line is high above the ground, so that the ground shielding effect is reduced, and the probability that the large-amplitude lightning current detours the conductor is increased. The lightning trip-out rate of the large-span power transmission line is far larger than that of the common power transmission line, and once the lightning strike occurs, the insulator string of the large-span power transmission line or other equipment is broken, the maintenance cost is higher than that of the common power transmission line. Therefore, lightning protection of large-span power transmission lines is the key point and difficulty of lightning protection of power transmission lines.
In order to solve the lightning protection problem of the large-span transmission line, reduce the lightning trip of the line and ensure the operation safety of the large-span transmission line, the problems of large wave resistance of a tower and failure of ground shielding are simultaneously solved, the effective release of the counterattack lightning current is ensured, the amplitude of the lightning shielding current can be greatly reduced, and the line trip and the equipment damage caused by the lightning stroke are avoided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a stride across lightning-arrest shaft tower for power transmission line greatly to solve the problem that above-mentioned prior art exists, prevent to stride across circuit tripping operation and equipment damage that power transmission line leads to because of the thunderbolt greatly.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a lightning rod tower for large-span transmission lines, which comprises a large-span rod tower, wherein the top end of the large-span rod tower is provided with a lightning rod insulator and an insulator string, a lightning rod is suspended on the lightning rod insulator, and a lead is suspended at the bottom end of the insulator string; the middle part of the large-span tower is also provided with an auxiliary cross arm, an auxiliary insulator is arranged on the auxiliary cross arm, and an auxiliary lightning conductor is hung on the auxiliary insulator.
Preferably, the lightning conductor insulator and the lightning conductor are both located above the conductor.
Preferably, the auxiliary lightning conductor and the auxiliary insulator are both located below the conductor.
Preferably, the auxiliary lightning conductor is electrically isolated from the auxiliary cross arm through the auxiliary insulator, and the lightning conductor is electrically isolated from the large-span tower through the lightning conductor insulator.
Preferably, the top end of the lightning conductor insulator is connected with the large span tower, and the bottom end of the lightning conductor insulator is connected with the lightning conductor; the top end of the auxiliary insulator is connected with the auxiliary cross arm, and the bottom end of the auxiliary insulator is connected with the auxiliary lightning conductor.
Preferably, the number of the lightning conductor insulators, the number of the lightning conductors, the number of the auxiliary insulators and the number of the auxiliary lightning conductors are two, the lightning conductor insulators correspond to the lightning conductors one to one, and the auxiliary insulators correspond to the auxiliary insulators and the auxiliary lightning conductors.
Preferably, the number of the insulator strings and the number of the leads are 3, and the insulator strings correspond to the leads one by one.
The utility model discloses for prior art gain following technological effect:
the utility model discloses stride across power transmission line greatly with lightning rod tower can prevent to stride across circuit tripping operation and equipment damage that power transmission line leads to because of the thunderbolt greatly. The utility model discloses two sets of lightning rod group one-tenth lightning protection network about strideing across lightning rod tower for power transmission line greatly adopts, has reduced the long-span tower wave impedance constantly of thunderbolt on the one hand, and on the other hand has played and has raised the ground potential and has prevented the shielding inefficacy problem that exists when only setting up the upper end ground wire, reaches to improve simultaneously and strides industry power transmission line counterattack and strike around the lightning-resistant level, reduces the purpose of circuit thunderbolt trip-out rate greatly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a lightning rod tower for a long span transmission line of the utility model;
wherein: 1-large span tower, 2-lightning conductor insulator, 3-lightning conductor, 4-insulator string, 5-lead, 6-auxiliary cross arm, 7-auxiliary insulator and 8-auxiliary lightning conductor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model aims at providing a stride across lightning-arrest shaft tower for power transmission line greatly to solve the problem that above-mentioned prior art exists, prevent to stride across circuit tripping operation and equipment damage that power transmission line leads to because of the thunderbolt greatly.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1: the lightning rod tower for the large-span power transmission line comprises a large-span rod tower 1, two lightning rod insulators 2 and three insulator strings 4 are arranged at the top end of the large-span rod tower 1, one lightning rod 3 is hung at the bottom end of each lightning rod insulator 2, the lightning rods 3 are electrically isolated from the large-span rod tower 1 through the lightning rod insulators 2, and a lead 5 is hung at the bottom end of each insulator string 4.
The middle part of the large-span tower 1 is also provided with an auxiliary cross arm 6, the auxiliary cross arm 6 is provided with two auxiliary insulators 7, the bottom end of each auxiliary insulator 7 is hung with an auxiliary lightning conductor 8, and the auxiliary lightning conductor 8 is electrically isolated from the auxiliary cross arm 6 through the auxiliary insulators 7.
The lightning conductor insulator 2 and the lightning conductor 3 are both positioned above the wire 5, and the auxiliary lightning conductor 8 and the auxiliary insulator 7 are both positioned below the wire 5. Lightning conductor insulator 2 and lightning conductor 3 are 3 ways of a set of lightning conductor, supplementary lightning conductor 8 and supplementary insulator 7 are 3 ways of another set of lightning conductor, lightning rod tower adopts upper and lower two sets of lightning conductors 3 to constitute the lightning protection network for the large-span transmission line of this embodiment, 1 wave impedance of large-span tower that has reduced the thunderbolt moment on the one hand, on the other hand has played and has raised the ground potential and has prevented the shielding failure problem that exists when only setting up the upper end ground wire, reach and improve the counterattack of large-span industry transmission line and the lightning-fast level of shielding around attack simultaneously, reduce the purpose of line thunderbolt trip-out.
In the description of the present invention, it should be noted that the terms "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. The utility model provides a stride across lightning rod tower for power transmission line greatly which characterized in that: the lightning protection tower comprises a large crossing tower, wherein a lightning conductor insulator and an insulator string are arranged at the top end of the large crossing tower, a lightning conductor is suspended on the lightning conductor insulator, and a lead is suspended at the bottom end of the insulator string; the middle part of the large-span tower is also provided with an auxiliary cross arm, an auxiliary insulator is arranged on the auxiliary cross arm, and an auxiliary lightning conductor is hung on the auxiliary insulator.
2. The lightning rod tower for the large-span transmission line according to claim 1, characterized in that: the lightning conductor insulator and the lightning conductor are both positioned above the wire.
3. The lightning rod tower for the large-span transmission line according to claim 1, characterized in that: the auxiliary lightning conductor and the auxiliary insulator are both positioned below the wire.
4. The lightning rod tower for the large-span transmission line according to claim 1, characterized in that: the auxiliary lightning conductor is electrically isolated from the auxiliary cross arm through the auxiliary insulator, and the lightning conductor is electrically isolated from the large-span tower through the lightning conductor insulator.
5. The lightning rod tower for the large-span transmission line according to claim 1, characterized in that: the top end of the lightning conductor insulator is connected with the large-span tower, and the bottom end of the lightning conductor insulator is connected with the lightning conductor; the top end of the auxiliary insulator is connected with the auxiliary cross arm, and the bottom end of the auxiliary insulator is connected with the auxiliary lightning conductor.
6. The lightning rod tower for the large-span transmission line according to claim 5, characterized in that: the lightning conductor insulator the lightning conductor the auxiliary insulator with the auxiliary lightning conductor is two, the lightning conductor insulator with the lightning conductor one-to-one, the auxiliary insulator with the auxiliary lightning conductor.
7. The lightning rod tower for the large-span transmission line according to claim 1, characterized in that: the number of the insulator strings is 3, and the insulator strings correspond to the number of the leads one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020655358.9U CN211720241U (en) | 2020-04-26 | 2020-04-26 | Lightning-protection tower for long-span transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020655358.9U CN211720241U (en) | 2020-04-26 | 2020-04-26 | Lightning-protection tower for long-span transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211720241U true CN211720241U (en) | 2020-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020655358.9U Expired - Fee Related CN211720241U (en) | 2020-04-26 | 2020-04-26 | Lightning-protection tower for long-span transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211720241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164322A (en) * | 2022-02-11 | 2022-03-11 | 杭州汽轮铸锻有限公司 | Tower connecting node, heat treatment method thereof and lightning-protection tower for power transmission and transformation |
-
2020
- 2020-04-26 CN CN202020655358.9U patent/CN211720241U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164322A (en) * | 2022-02-11 | 2022-03-11 | 杭州汽轮铸锻有限公司 | Tower connecting node, heat treatment method thereof and lightning-protection tower for power transmission and transformation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201020 Termination date: 20210426 |