CN220527395U

CN220527395U - Multi-gap protection device and installation system thereof

Info

Publication number: CN220527395U
Application number: CN202321645588.7U
Authority: CN
Inventors: 余大建; 陈武; 王秋荣; 蓝玉黎; 徐衍枝
Original assignee: Fujian Sanxiang Electric Power Technology Co ltd
Current assignee: Fujian Sanxiang Electric Power Technology Co ltd
Priority date: 2023-06-27
Filing date: 2023-06-27
Publication date: 2024-02-23
Anticipated expiration: 2033-06-27

Abstract

The utility model discloses a multi-gap protection device and an installation system thereof, wherein the structure of the multi-gap protection device comprises a disc, an insulating bracket, an electrode bracket, a first electrode and a second electrode; the discs are provided with a plurality of discs and are connected in series through insulating supports; the disc is internally provided with a multi-gap arc extinguishing string structure, and is provided with two first electrodes which are respectively arranged at the head end and the tail end of the multi-gap arc extinguishing string structure; the second electrode is arranged on the electrode bracket, a gap is formed between the second electrode and the corresponding first electrode, the through-flow capacity of the second electrode is high through the cooperation of the main gap and the arc extinguishing chamber by the multi-gap protection device, the multi-pulse lightning stroke is resisted, no extra lightning conductor, lightning rod and a plurality of insulator components are required to be erected, and the cost and the later operation and maintenance cost are saved; and the multi-gap arc extinguishing string structure enables the discharge of the arc blowing energy of the arc extinguishing string to be full, and the through-flow capacity is strong.

Description

Multi-gap protection device and installation system thereof

Technical Field

The utility model relates to a multi-gap protection device and an installation system thereof, and belongs to the field of lightning protection devices.

Background

The overhead power line is frequently tripped and powered off due to lightning strike, so that direct and indirect economic losses are brought, and the requirement of a user on high-quality stable power supply cannot be met;

the prior conventional avoidance method is mainly to erect a lightning wire and a lightning rod; the number of insulators is increased, and the line insulation level is improved; the grounding resistance value of the tower is reduced, a line lightning arrester is arranged, and the like, but the protection angle for erecting the lightning conductor is large in the measures, so that the problems of lightning induction, shielding failure and counterattack are difficult to solve; the lightning rod is not limited in current, so that secondary damage is brought; the number of the insulators is limited, the cost is high, and the method is uneconomical; the difficulty in reducing the grounding resistance is high, and the cost is high; the common lightning arrester has small current capacity, is easy to form fault points and has great operation and maintenance difficulty.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a multi-gap protection device and an installation system thereof so as to solve the problems.

In order to achieve the above object, the present utility model is realized by the following technical scheme: a multi-gap protection device and an installation system thereof structurally comprise a disc, an insulating bracket, an electrode bracket, a first electrode and a second electrode; the discs are provided with a plurality of discs and are connected in series through insulating supports; the disc is internally provided with a multi-gap arc extinguishing string structure, and is provided with two first electrodes which are respectively arranged at the head end and the tail end of the multi-gap arc extinguishing string structure; the second electrode is mounted on the electrode mount and will form a gap with respect to the first electrode.

Preferably, the electrode holder is mounted on an insulating holder.

Preferably, the first electrode and the second electrode are both conductive geometries.

Preferably, the multi-gap arc extinguishing string structure comprises a plurality of metal ball electrodes and a gap cavity between two metal ball electrodes, wherein the metal ball electrodes are arranged in a gap manner in the insulating rubber; the first electrodes are respectively arranged opposite to the head ends and the tail ends of the metal ball electrodes annularly distributed on the disc; the clearance cavity is a conical hole, and an opening of the clearance cavity corresponds to the side face of the disc.

Preferably, a channel for communicating two adjacent metal ball electrodes is arranged in the hole of the clearance cavity.

The installation system of the multi-gap protection device comprises the multi-gap protection device, a pole tower, a connecting piece for installing the multi-gap protection device on the pole tower, a power transmission wire, a stranded wire for connecting the multi-gap protection device with the power transmission wire, and a line insulator arranged between the power transmission wire and the connecting piece; the insulation support arranged at the topmost end is fixedly arranged on the pole tower through a connecting piece; the insulating support arranged at the bottommost end is connected with the power transmission wire through a stranded wire.

Preferably, the connecting piece comprises an insulator cross arm which is fixedly arranged on the tower and a mounting bracket which is connected with the insulating bracket; the bottom of the line insulator is arranged on the insulator cross arm.

Advantageous effects

The multi-gap protection device has the advantages that through the matching of the main gap and the arc extinguishing chamber, the through-flow capacity is high, the multi-pulse lightning stroke is resisted, an extra lightning conductor, a lightning rod and a plurality of insulator components are not required to be erected, and the cost and the later operation and maintenance cost are saved; and the multi-gap arc extinguishing string structure enables the discharge of the arc blowing energy of the arc extinguishing string to be full, and the through-flow capacity is strong.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of a multi-gap protection device according to the present utility model;

FIG. 2 is a schematic top view of a multi-gap protection device according to the present utility model;

fig. 3 is a schematic structural diagram of a mounting system of a multi-gap protection device according to the present utility model.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Referring to fig. 1 and 2, the present utility model provides a technical solution of a multi-gap protection device: the structure of the device comprises a disc 11, an insulating bracket 12, an electrode bracket 13, a first electrode 15 and a second electrode 14; the discs 11 are provided with a plurality of discs and are connected in series through insulating supports 12; wherein the electrode holder 13 is mounted on the insulating holder 12; the upper side and the lower side of the disc 11 are respectively provided with a first electrode 15; a second electrode 14 is mounted on the electrode support 13, and the second electrode 14 is a first electrode 15 corresponding to the upper and lower surfaces of the second electrode 14 disc 11, and an air gap between the first electrode 15 and the second electrode 14 is used as a main gap; wherein the first electrode 15 and the second electrode 14 are conductive spheres;

the disc 11 is internally provided with a multi-gap arc extinguishing string structure; the multi-gap arc extinguishing string structure comprises a plurality of metal ball electrodes 16 which are arranged in a gap way in an insulating rubber 17 in a disc 11, and a gap cavity 18 between the two metal ball electrodes 16; the metal ball electrode 16 is located in a range of 3/4 of the circumference of the disc 11; the first electrodes 15 are respectively arranged opposite to the head end and the tail end of the metal ball electrodes 16 annularly distributed on the disc 11;

wherein the clearance cavity 18 is a conical hole, and the wide opening of the clearance cavity corresponds to the side face of the disc 11; a channel for communicating two adjacent metal ball electrodes 16 is arranged in the hole of the clearance cavity 18 to form an arc extinguishing chamber; when lightning strikes, the second electrode 14 leads the lightning to the first electrode 15 and the arc extinguishing chamber through the main gap, and generates an electric arc after the lightning breaks down, and the electric arc is ejected through the opening of the conical hole of the arc extinguishing chamber, so that the electric arc is elongated, the resistance of an arc path is increased, and the power frequency electric arc is extinguished after the first zero crossing under the combined action of the voltage drop of the arc path and the deionization;

referring to fig. 3, a technical scheme of an installation system of a multi-gap protection device includes a multi-gap protection device 1, a tower 6, a connecting piece for installing the multi-gap protection device 1 on the tower 6, a power transmission wire 3, an aluminum stranded wire 2 for connecting the multi-gap protection device 1 with the power transmission wire 3, and a line insulator 4 arranged between the power transmission wire 3 and the connecting piece; the insulation bracket 12 arranged at the topmost end is fixedly arranged on the pole tower 6 through a connecting piece; the insulation support 12 arranged at the bottommost end is connected with the power transmission wire 3 through the stranded wire 2; the connecting piece comprises an insulator cross arm 5 which is fixedly arranged on a pole tower 6 and a mounting bracket 7 which is connected with an insulating bracket 12; the bottom end of the line insulator 4 is arranged on the insulator cross arm 5; the aluminum stranded wire 2 is used for directly communicating the power transmission wire 3 with the lightning arrester, so that when lightning stroke occurs, current is led to the lightning arrester, and the purpose of protecting a power transmission line and equipment is achieved; the line insulator 4 and the insulator cross arm 5 are built on the pole tower 6, so that the influence of the electric conduction of the pole tower 6 on the ground safety is avoided.

The insulating materials such as line insulator, insulator cross arm, insulating rubber and conductive electrode can be purchased directly in the market, so the material components are not described in the specification.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A multi-gap protection device, characterized in that: the structure of the device comprises a disc, an insulating bracket, an electrode bracket, a first electrode and a second electrode; the discs are provided with a plurality of discs and are connected in series through insulating supports; the disc is internally provided with a multi-gap arc extinguishing string structure, and is provided with two first electrodes which are respectively arranged at the head end and the tail end of the multi-gap arc extinguishing string structure; the second electrode is mounted on the electrode mount and will form a gap with respect to the first electrode.

2. A multi-gap protection device according to claim 1, wherein: the electrode support is mounted on the insulating support.

3. A multi-gap protection device according to claim 1, wherein: the first electrode and the second electrode are both conductive geometries.

4. A multi-gap protection device according to claim 1, wherein: the multi-gap arc extinguishing string structure comprises a plurality of metal ball electrodes and a gap cavity between two metal ball electrodes, wherein the metal ball electrodes are arranged in a gap manner in the insulating rubber; the first electrodes are respectively arranged opposite to the head ends and the tail ends of the metal ball electrodes annularly distributed on the disc; the clearance cavity is a conical hole, and an opening of the clearance cavity corresponds to the side face of the disc.

5. The multi-gap protection device of claim 4, wherein: and a channel for communicating two adjacent metal ball electrodes is arranged in the hole of the clearance cavity.

6. A system for mounting a multi-gap protection device, comprising: a multi-gap protection device, a tower, a connector for the multi-gap protection device to be mounted on the tower, a power transmission wire, a stranded wire for the multi-gap protection device to be connected with the power transmission wire, and a line insulator arranged between the power transmission wire and the connector; the insulation support arranged at the topmost end is fixedly arranged on the pole tower through a connecting piece; the insulating support arranged at the bottommost end is connected with the power transmission wire through a stranded wire.

7. The multi-gap protector mounting system of claim 6, wherein: the connecting piece comprises an insulator cross arm and a mounting bracket, wherein the insulator cross arm is fixedly arranged on the pole tower, and the mounting bracket is connected with the insulating bracket; the bottom of the line insulator is arranged on the insulator cross arm.