CN204332559U - drop arrester - Google Patents

Abstract

The utility model relates to high voltage protective electrical equipment, particularly relates to drop-type arrester.Comprise m and lightning arrester assembly, described m comprises insulator pillar, and the upper end of insulator pillar is fixedly connected with upper bracket, and upper bracket is also fixed with high-pressure conductive shell fragment, the lower end of insulator pillar is fixedly connected with lower carriage, and supporting seat is fixed on lower carriage; Described lightning arrester assembly comprises lightning arrester body, the lower end of lightning arrester body is provided with thermal-explosion type disengaging device, the bottom of lightning arrester body is rotatably arranged on supporting seat by falling switch block, and the top of lightning arrester body is connected with high-pressure conductive shell fragment by moving contact connector; Upper bracket is also provided with rain-proof cover.Auto-falling lightning arrester can coordinate with circuit breaker reclosing function, is applicable to the lightning arrester of various electrical voltage system grade, is also applicable to different grounding systems.

Description

drop arrester

technical field

The invention relates to a high-voltage protective electrical appliance, in particular to a drop arrester.

Background technique

The drop-out arrester is a distribution-type zinc oxide arrester that is refitted and installed on the drop-out mechanism of the drop-out fuse, so that the arrester can be easily detected, repaired and replaced with the help of the insulated switch lever when the power supply is not interrupted. , not only ensures the smooth flow of the line, but also greatly reduces the work intensity and time of power maintenance personnel, especially suitable for places where power failure is not suitable, such as communications, airports, stations, hospitals, bustling commercial areas, etc. Other performances of the product are the same as those of the power distribution type lightning arrester.

The drop-type arrester adds a disconnector. When the arrester fails abnormally, the power-frequency short-circuit current is used to make the disconnector act, so that the grounding end of the disconnector is automatically disengaged, and the arrester components are overturned, and the arrester is out of operation to prevent the accident from expanding and easy to maintain. Personnel find out in time for maintenance and replacement. The drop arrester needs to have the characteristics of fast action speed, wide operating current range, and ability to withstand the specified current impact and operating load, so the structure is constantly being optimized and improved.

Contents of the invention

1. Technical problems to be solved

Aiming at the problem of irrational structure and easy theft existing in the prior art, the present invention provides a novel drop-type arrester to solve the problems in the prior art.

2. Technical solution

The purpose of the present invention is achieved through the following technical solutions.

The drop-type lightning arrester of the present utility model includes a fixed bracket component and a lightning arrester component. The fixed bracket component includes an insulator support 19, and the upper end of the insulator support 19 is fixedly connected with an upper support 23, and a high-voltage conductive shrapnel 4 is also fixed on the upper support 23. , the lower end of the insulator pillar 19 is fixedly connected with the lower bracket 9, and the support seat 13 is fixed on the lower bracket 9; The lower part is rotatably installed on the support base 13 by dropping the turning block 11, and the upper part of the arrester body 8 is connected with the high-voltage conductive shrapnel 4 through the moving contact connector 5;

Furthermore, the thermal-explosive disconnector 15 is specifically a thermal-explosive silicon carbide disconnector.

Furthermore, the upper part of the upper bracket 23 is also provided with a high-voltage wire connection terminal 2 .

Furthermore, the above-mentioned support base 13 is also provided with an elastic piece 12 that breaks away from the ground.

3. Beneficial effect

Compared with the prior art, the present invention has the advantages of:

1. The automatic drop arrester can cooperate with the reclosing function of the circuit breaker. It is suitable for arresters of various voltage system levels, and also suitable for different grounding systems (neutral point grounding and ungrounding systems).

2. The anti-theft performance is outstanding, raw materials (copper parts) are saved, and the hot-explosive silicon carbide separator is selected, which is in line with the national policy of promoting energy conservation and emission reduction.

3. Maintenance-free, flexible installation, small size, light weight, etc.

4. It can be detected and replaced in the case of continuous power supply (especially suitable for hospital communication, etc.).

5. Novel structure, reasonable design, reliable technical performance, collision resistance, no damage during transportation.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of this patent.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in Figure 1, the drop arrester of the present utility model includes a fixed bracket assembly and a lightning arrester assembly, the fixed bracket assembly includes an insulator support 19, the upper end of the insulator support 19 is fixedly connected to the upper support 23, and the upper part of the upper support 23 is also A high-voltage wire connection end 2 is provided, and a high-voltage conductive shrapnel 4 is also fixed on the upper bracket 23. The lower end of the insulator support 19 is fixedly connected with the lower bracket 9, and the support seat 13 is fixed on the lower bracket 9; the arrester assembly includes the arrester body 8 , the lower end of the arrester body 8 is provided with a heat-explosive disconnector 15, specifically a thermal-explosive silicon carbide disconnector, the lower part of the arrester body 8 is rotatably mounted on the support base 13 by dropping the swivel block 11, and the support base 13 is also provided with There is a shrapnel 12 for breaking away from the ground. The shrapnel 12 for breaking away from the grounding is elastic. Under normal conditions, it presses on the upper part of the drop turning block 11. It will not affect the rotation of the drop turning block 11 when it falls off. The upper part of the arrester body 8 is connected by a moving contact. The piece 5 is connected with the high-voltage conductive shrapnel 4; the upper bracket 23 is also provided with a rainproof cover 3.

Claims (4)

1. a drop-type arrester, it is characterized in that: comprise m and lightning arrester assembly, described m comprises insulator pillar (19), the upper end of insulator pillar (19) is fixedly connected with upper bracket (23), upper bracket (23) is also fixed with high-pressure conductive shell fragment (4), the lower end of insulator pillar (19) is fixedly connected with lower carriage (9), and supporting seat (13) is fixed on lower carriage (9); Described lightning arrester assembly comprises lightning arrester body (8), the lower end of lightning arrester body (8) is provided with thermal-explosion type disengaging device (15), the bottom of lightning arrester body (8) is rotatably arranged on supporting seat (13) by falling switch block (11), and the top of lightning arrester body (8) is connected with high-pressure conductive shell fragment (4) by moving contact connector (5); Upper bracket (23) is also provided with rain-proof cover (3).

2. drop-type arrester according to claim 1, is characterized in that: described thermal-explosion type disengaging device (15) is specially thermal-explosion type carborundum disconnector.

3. drop-type arrester according to claim 1, is characterized in that: described upper bracket (23) top is also provided with high-voltage conducting wires link (2).

4. drop-type arrester according to claim 1, is characterized in that: described supporting seat (13) is also provided with and departs from grounding elastic part (12).