CN215868826U - An insulator lightning protection structure - Google Patents

An insulator lightning protection structure Download PDF

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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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China
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insulator
lightning
support frame
lightning protection
arrester
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CN202121549438.7U
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Inventor
喻超
刘湘龙
黄毅
甘露
吴叙卓
王炎
徐帆
王杰威
周毅
荣小冲
蔡翔
徐晨
汪志军
刘楷文
昌思远
李四秀
李健
黄瑞
黄代雄
李潭
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State Grid Hubei Transmission And Transformation Engineering Co ltd
State Grid Corp of China SGCC
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State Grid Hubei Transmission And Transformation Engineering Co ltd
State Grid Corp of China SGCC
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Abstract

本实用新型提供了一种绝缘子防雷结构,包括绝缘子,所述绝缘子的顶端穿设有绝缘导线,所述绝缘子的底端安装有第一支撑架,所述第一支撑架与第二支撑架相连接,所述第二支撑架与避雷器的底部相连接;所述绝缘子的中部和所述避雷器的中部通过引弧环相连接,在绝缘子上安装避雷器,且绝缘子与避雷器为串联环状间隙的安装方式,以此加强对线路绝缘子、架空导线、柱上开关设备的保护力度。

Figure 202121549438

The utility model provides an insulator lightning protection structure, comprising an insulator, an insulating wire is passed through the top of the insulator, a first support frame is installed at the bottom end of the insulator, the first support frame and the second support frame The second support frame is connected with the bottom of the arrester; the middle part of the insulator and the middle part of the arrester are connected by an arc striking ring, the arrester is installed on the insulator, and the insulator and the arrester are connected in series with annular gaps. In order to strengthen the protection of line insulators, overhead wires, and switchgear on poles.

Figure 202121549438

Description

Insulator lightning protection structure
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)

1.一种绝缘子防雷结构,其特征在于:包括绝缘子(1),所述绝缘子(1)的顶端穿设有绝缘导线(2),所述绝缘子(1)的底端安装有第一支撑架(301),所述第一支撑架与第二支撑架相连接,所述第二支撑架与避雷器(4)的底部相连接;所述绝缘子(1)的中部和所述避雷器(4)的中部通过引弧环(5)相连接。1. An insulator lightning protection structure, characterized in that: comprising an insulator (1), the top end of the insulator (1) is provided with an insulated wire (2), and the bottom end of the insulator (1) is provided with a first support frame (301), the first support frame is connected with the second support frame, and the second support frame is connected with the bottom of the arrester (4); the middle part of the insulator (1) and the arrester (4) The middle part is connected by the arc pilot ring (5). 2.根据权利要求1所述的一种绝缘子防雷结构,其特征在于:所述第一支撑架包括第一横部(3011)和第一竖部(3012),所述第一横部(3011)和所述第一竖部(3012)垂直相连接;2. An insulator lightning protection structure according to claim 1, characterized in that: the first support frame comprises a first transverse part (3011) and a first vertical part (3012), and the first transverse part (3012) 3011) and the first vertical portion (3012) are vertically connected; 所述第二支撑架包括第二横部(3022)和第三横部(3023),所述第二横部(3022)和所述第三横部(3023)呈120度夹角相连接。The second support frame includes a second transverse portion (3022) and a third transverse portion (3023), and the second transverse portion (3022) and the third transverse portion (3023) are connected at an included angle of 120 degrees. 3.根据权利要求2所述的一种绝缘子防雷结构,其特征在于:所述第一横部(3011)和所述第二横部(3022)通过螺母与所述绝缘子(1)的底部相连接,所述第三横部(3023)通过螺母与所述避雷器(4)的底部相连接。3. An insulator lightning protection structure according to claim 2, characterized in that: the first transverse portion (3011) and the second transverse portion (3022) are connected to the bottom of the insulator (1) through a nut connected, the third transverse portion (3023) is connected with the bottom of the arrester (4) through a nut. 4.根据权利要求3所述的一种绝缘子防雷结构,其特征在于:所述引弧环(5)分为两段,两段所述引弧环(5)呈120度夹角相连接。4. An insulator lightning protection structure according to claim 3, characterized in that: the arc pilot ring (5) is divided into two sections, and the two sections of the arc pilot ring (5) are connected at an angle of 120 degrees . 5.根据权利要求4所述的一种绝缘子防雷结构,其特征在于:所述避雷器(4)与所述绝缘导线(2)之间连有避雷线,所述避雷线通过安装线夹(6)与所述绝缘导线(2)相连接。5. An insulator lightning protection structure according to claim 4, characterized in that: a lightning protection wire is connected between the lightning arrester (4) and the insulated wire (2), and the lightning protection wire passes through the installation clip ( 6) Connect with the insulated wire (2). 6.根据权利要求5所述的一种绝缘子防雷结构,其特征在于:所述绝缘子(1)和所述避雷器(4)呈小于或等于60度的夹角相连接。6. An insulator lightning protection structure according to claim 5, characterized in that: the insulator (1) and the lightning arrester (4) are connected at an angle less than or equal to 60 degrees. 7.根据权利要求6所述的一种绝缘子防雷结构,其特征在于:所述引弧环(5)与所述绝缘导线(2)间隔设置。7 . The lightning protection structure of an insulator according to claim 6 , wherein the arc striking ring ( 5 ) and the insulated wire ( 2 ) are arranged at intervals. 8 .
CN202121549438.7U 2021-07-08 2021-07-08 An insulator lightning protection structure Active CN215868826U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121549438.7U CN215868826U (en) 2021-07-08 2021-07-08 An 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 An insulator lightning protection structure

Publications (1)

Publication Number Publication Date
CN215868826U true CN215868826U (en) 2022-02-18

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CN (1) CN215868826U (en)

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