CN215868826U - Insulator lightning protection structure - Google Patents
Insulator lightning protection structure Download PDFInfo
- Publication number
- CN215868826U CN215868826U CN202121549438.7U CN202121549438U CN215868826U CN 215868826 U CN215868826 U CN 215868826U CN 202121549438 U CN202121549438 U CN 202121549438U CN 215868826 U CN215868826 U CN 215868826U
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- insulator
- lightning
- support frame
- protection structure
- arrester
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- 239000012212 insulator Substances 0.000 title claims abstract description 47
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 2
- 208000025274 Lightning injury Diseases 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model provides an insulator lightning protection structure, which comprises an insulator, wherein an insulated wire penetrates through the top end of the insulator, a first support frame is arranged at the bottom end of the insulator, the first support frame is connected with a second support frame, and the second support frame is connected with the bottom of a lightning arrester; the middle part of the insulator is connected with the middle part of the arrester through an arc striking ring, the arrester is installed on the insulator, and the insulator and the arrester are installed in a series annular gap mode, so that the protection strength of a line insulator, an overhead conductor and on-column switch equipment is enhanced.
Description
Technical Field
The utility model relates to the field of power transmission and transformation erection, in particular to an insulator lightning protection structure.
Background
The lightning stroke faults suffered by the power transmission and distribution line can be divided into direct lightning stroke faults and inductive lightning stroke faults. The direct lightning failure is caused by the fact that lightning directly discharges from thunderclouds to line equipment, lightning current can reach dozens of kiloamperes under the condition, lightning voltage can reach hundreds of kilovolts, and severe lightning energy can cause great damage to the line equipment. The induced lightning fault is a lightning fault formed by the fact that a strong electric field generated by lightning current acts on various lines when thundercloud discharges to the ground (ground flash) or the thundercloud discharges to the thundercloud (cloud flash), and overvoltage and overcurrent are induced to finally flow through line equipment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an insulator lightning protection structure aiming at the defects of the prior art, provides a discharge channel for lightning energy release, and has stable protection performance.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides an insulator lightning protection structure, which comprises an insulator, wherein an insulated wire penetrates through the top end of the insulator, a first support frame is arranged at the bottom end of the insulator, the first support frame is connected with a second support frame, and the second support frame is connected with the bottom of a lightning arrester; the middle part of the insulator is connected with the middle part of the lightning arrester through an arc striking ring.
Further, the first support frame comprises a first transverse part and a first vertical part, and the first transverse part is vertically connected with the first vertical part;
the second support frame includes second horizontal portion and third horizontal portion, the second horizontal portion with the third horizontal portion is 120 degrees contained angles and is connected.
Further, the first transverse portion and the second transverse portion are connected with the bottom of the insulator through nuts, and the third transverse portion is connected with the bottom of the lightning arrester through nuts.
Furthermore, the arc striking ring is divided into two sections, and the two sections of arc striking rings are connected with each other at an included angle of 120 degrees.
Further, a lightning conductor is connected between the lightning arrester and the insulated conductor, and the lightning conductor is connected with the insulated conductor through an installation wire clamp.
Furthermore, the insulator and the lightning arrester are connected with each other at an included angle less than or equal to 60 degrees.
Further, the arc striking ring and the insulated wire are arranged at intervals.
The utility model has the beneficial effects that: the lightning arrester is installed on the insulator, and the insulator and the lightning arrester are installed in a series annular gap mode, so that the protection strength of the line insulator, the overhead conductor and the column switch equipment is enhanced.
Drawings
Fig. 1 shows a lightning protection structure of an insulator according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1, an insulator lightning protection structure includes an insulator 1, an insulated wire 2 is inserted through a top end of the insulator 1, a first support frame 301 is installed at a bottom end of the insulator 1, the first support frame is connected with a second support frame, and the second support frame is connected with a bottom of a lightning arrester 4; the middle part of the insulator 1 is connected with the middle part of the lightning arrester 4 through an arc striking ring 5.
The first support frame comprises a first transverse part 3011 and a first vertical part 3012, and the first transverse part 3011 and the first vertical part 3012 are vertically connected;
the second support frame comprises a second transverse part 3022 and a third transverse part 3023, and the second transverse part 3022 and the third transverse part 3023 are connected at an included angle of 120 degrees.
Specifically, the insulator 1 and the lightning arrester 4 are arranged in series for intermittent protection, the lightning arrester 4 and the insulated wire 2 are isolated from electrical connection, and air is used as an intermediate medium for protecting a gap. Normally, the series protection gap with the calculated and verified distance can be discharged prior to the insulator when the line is damaged by lightning.
The first transverse portion 3011 and the second transverse portion 3022 are connected to the bottom of the insulator 1 by nuts, and the third transverse portion 3023 is connected to the bottom of the arrester 4 by nuts.
The arc striking ring 5 is divided into two sections, and the two sections of the arc striking rings 5 are connected with each other at an included angle of 120 degrees.
And a lightning conductor 5 is connected between the lightning arrester 4 and the insulated conductor 2, and the lightning conductor 5 is connected with the insulated conductor 2 through a mounting wire clamp 6.
Specifically, when the lightning conductor 5 is installed above the line, the lightning conductor 5 is often subjected to uplink pilot, and it becomes more difficult for the wire to generate uplink pilot, so that the probability of lightning strike discharge of the wire is reduced. Overall, the action of the lightning conductor 5 is very significant: the direct-current protection device can prevent the direct-current protection device from directly hitting the middle lead, can play a role in shunting, and reduces the current flowing into the ground through the tower, so that the top potential of the tower is reduced. And secondly, the voltage value born by the line insulation can be reduced through the coupling effect on the wire 2, and the lightning conductor 5 also has a shielding effect on the wire 2, so that the induced lightning overvoltage can be reduced.
The insulator 1 and the lightning arrester 4 are connected with each other at an included angle of less than or equal to 60 degrees.
When the distance between the annular electrode and the insulator 1 is too close, the probability of lightning flashover is easily increased, otherwise, the equipment cannot be effectively protected when the distance is too far. When the included angle between the insulator 1 and the arrester 4 is not more than 60 degrees, the installation process can be simplified, and the influence of poor installation process on the effect of the arrester is avoided.
The arc striking ring 5 and the insulated wire 2 are arranged at intervals.
Namely, the air space is arranged between the arc striking ring 5 and the insulated conductor 2, so that the direct-striking of the conductor in the lightning stroke can be effectively prevented.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. The utility model provides an insulator lightning protection structure which characterized in that: the lightning arrester comprises an insulator (1), wherein an insulated wire (2) penetrates through the top end of the insulator (1), a first support frame (301) is installed at the bottom end of the insulator (1), the first support frame is connected with a second support frame, and the second support frame is connected with the bottom of a lightning arrester (4); the middle part of the insulator (1) is connected with the middle part of the lightning arrester (4) through an arc striking ring (5).
2. The insulator lightning protection structure according to claim 1, wherein: the first support frame comprises a first transverse part (3011) and a first vertical part (3012), and the first transverse part (3011) and the first vertical part (3012) are vertically connected;
the second support frame comprises a second transverse part (3022) and a third transverse part (3023), wherein the second transverse part (3022) is connected with the third transverse part (3023) at an included angle of 120 degrees.
3. The insulator lightning protection structure according to claim 2, wherein: the first transverse part (3011) and the second transverse part (3022) are connected with the bottom of the insulator (1) through nuts, and the third transverse part (3023) is connected with the bottom of the lightning arrester (4) through nuts.
4. The insulator lightning protection structure according to claim 3, wherein: the arc striking ring (5) is divided into two sections, and the two sections of the arc striking ring (5) are connected with each other at an included angle of 120 degrees.
5. The insulator lightning protection structure according to claim 4, wherein: and a lightning conductor is connected between the lightning arrester (4) and the insulated conductor (2) and is connected with the insulated conductor (2) through an installation wire clamp (6).
6. The insulator lightning protection structure according to claim 5, wherein: the insulator (1) and the lightning arrester (4) are connected in an included angle of less than or equal to 60 degrees.
7. The insulator lightning protection structure according to claim 6, wherein: the arc striking ring (5) and the insulated conducting wire (2) are arranged at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121549438.7U CN215868826U (en) | 2021-07-08 | 2021-07-08 | Insulator lightning protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121549438.7U CN215868826U (en) | 2021-07-08 | 2021-07-08 | Insulator lightning protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215868826U true CN215868826U (en) | 2022-02-18 |
Family
ID=80333081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121549438.7U Active CN215868826U (en) | 2021-07-08 | 2021-07-08 | Insulator lightning protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215868826U (en) |
-
2021
- 2021-07-08 CN CN202121549438.7U patent/CN215868826U/en active Active
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