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.
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.