CN106782960A - A kind of lightweight GIS arresters - Google Patents

Abstract

The invention discloses a kind of lightweight GIS arresters, including housing, disc insulator, lightning arrester core body, base plate and low-pressure line-outgoing end, disc insulator is fixed on the top open part of housing, base plate is fixed at the bottom opening of housing, lightning arrester core body is located in housing, the upper end of lightning arrester core body is connected with the center conductor of disc insulator, the lower end of lightning arrester core body is fixed on base plate, the low-pressure end of lightning arrester core body is connected with low-pressure line-outgoing end, housing is prepared from by polyesters composite or expoxy glass wire material, the arrester weight is small, low cost.

Description

A Lightweight GIS Lightning Arrester

technical field

The invention belongs to the technical field of lightning arrester design and relates to a lightweight GIS lightning arrester.

Background technique

GIS surge arresters are widely used in AC transmission systems and are important overvoltage protection devices for GIS combined electrical equipment. They are connected in parallel next to the protected electrical equipment to prevent the protected electrical equipment from being damaged by lightning and operating overvoltage. Currently, GIS In the manufacture of the arrester, the shell is made of metal material, which is heavy and expensive to manufacture.

Contents of the invention

The object of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a lightweight GIS arrester, which has small weight and low cost.

In order to achieve the above purpose, the lightweight GIS arrester of the present invention includes a shell, a pot insulator, a core of the arrester, a bottom plate and a low-voltage outlet, the pot insulator is fixed on the top opening of the shell, and the bottom plate is fixed on the bottom of the shell. At the bottom opening, the arrester core is located in the shell, the upper end of the arrester core is connected to the center conductor of the pot insulator, the lower end of the arrester core is fixed on the bottom plate, the low-voltage end of the arrester core is connected to the low-voltage outlet end, and the shell It is made of polyester composite material or epoxy glass fiber material.

An inflation valve and a pressure release device are arranged on the bottom plate.

A monitor for monitoring the core of the arrester is provided on the side of the lower end of the housing, wherein the high voltage end of the monitor is connected to the low voltage outlet end.

The upper and lower ends of the shell are respectively provided with metal flanges for connecting the pot insulator and the bottom plate.

A conductive silicon rubber layer is molded or sprayed on the outer wall of the casing, and the conductive silicon rubber layer is connected with a grounding terminal.

The core of the arrester includes several zinc oxide resistors stacked in series, and insulating rods for fixing each zinc oxide resistor. The insulating rods are erected and fixed on the bottom plate. The center conductor of the type insulator is connected.

The metal flange is connected with the upper end and the lower end of the shell by hot pressing or glue mounting.

The lower end of the bottom plate is fixed with a mounting bracket.

The present invention has the following beneficial effects:

The lightweight GIS lightning arrester of the present invention comprises a housing, a basin type insulator, a lightning arrester core and a low-voltage outlet terminal. The low-voltage end of the body is connected, and the shell is made of polyester composite material or epoxy glass fiber material, thereby effectively reducing the weight of the GIS arrester, reducing the amount of metal materials used in the GIS arrester, and reducing the cost of the arrester. Solve the problem of light weight of GIS arrester and ensure the safe operation of arrester.

Furthermore, the upper and lower ends of the shell are respectively provided with metal flanges for connecting the pot insulator and the bottom plate, so as to realize the connection between the shell and the pot insulator and the bottom plate, and the shell has no weld seam, thereby effectively improving the sealing performance of the arrester.

Furthermore, a conductive silicone rubber layer is molded or sprayed on the outer wall of the housing, and the conductive silicone rubber layer is connected with a grounding terminal to realize the grounding of the housing, thereby effectively improving the safety of the lightning arrester.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Among them, 1 is the pot insulator, 2 is the shell, 3 is the core of the arrester, 4 is the monitor, 5 is the wire, 6 is the bottom plate, 7 is the pressure release device, 8 is the low-voltage outlet terminal, 9 is the inflation valve, 10 for mounting brackets.

detailed description

The present invention is described in further detail below in conjunction with accompanying drawing:

Referring to Fig. 1, the lightweight GIS arrester of the present invention includes a housing 2, a pot insulator 1, an arrester core 3, a bottom plate 6 and a low-voltage outlet terminal 8, and the pot insulator 1 is fixed at the top opening of the case 2, The bottom plate 6 is fixed at the bottom opening of the shell 2, the arrester core 3 is located in the shell 2, the upper end of the arrester core 3 is connected to the central conductor of the pot insulator 1, the arrester core 3 is fixed on the bottom plate 6, and the arrester The low-voltage end of the core body 3 is connected to the low-voltage outlet end 8, and the shell 2 is made of polyester composite material or epoxy glass fiber material.

The bottom plate 6 is provided with an inflation valve 9 and a pressure release device 7; the side of the lower end of the housing 2 is provided with a monitor 4 for monitoring the arrester core 3, wherein the monitor 4 is connected to the low-voltage outlet terminal 8 The upper and lower ends of the housing 2 are respectively provided with metal flanges for connecting the arrester core 3 and the bottom plate 6; the outer wall of the housing 2 is molded or sprayed with a conductive silicone rubber layer, and the conductive silicone rubber layer is connected to the ground terminal; the arrester core 3 includes a number of zinc oxide resistors stacked in series, and insulating rods for fixing each zinc oxide resistor. And the contact is connected with the central conductor of the pot insulator 1; the metal flange is connected with the upper end and the lower end of the shell 2 by hot pressing or glue mounting; the lower end of the bottom plate 6 is fixed with a mounting bracket 10; the low-voltage outlet terminal 8 It is connected to the high voltage end of the monitor 4 through the wire 5 .

The housing 2 in the present invention is made of polyester composite material or epoxy glass fiber material, the weight of the GIS arrester is reduced by 30%, there is no weld seam, the sealing performance and weather aging resistance are improved, and the metal material of the GIS arrester is reduced. The manufacturing cost is reduced, the installation is convenient, the light weight requirement of the GIS lightning arrester can be solved, and the safe operation of the lightning arrester can be ensured.

Claims (8)

1. a kind of lightweight GIS arresters, it is characterised in that including housing (2), disc insulator (1), lightning arrester core body (3), Base plate (6) and low-pressure line-outgoing end (8), disc insulator (1) are fixed on the top open part of housing (2), and base plate (6) is fixed on shell At the bottom opening of body (2), lightning arrester core body (3) in the housing (2), the upper end of lightning arrester core body (3) and disc insulator (1) center conductor is connected, and the lower end of lightning arrester core body (3) is fixed on base plate (6), the low-pressure end of lightning arrester core body (3) It is connected with low-pressure line-outgoing end (8), housing (2) is prepared from by polyesters composite or expoxy glass wire material.

2. lightweight GIS arresters according to claim 1, it is characterised in that the base plate (6) is provided with charge valve And pressure relief device (7) (9).

3. lightweight GIS arresters according to claim 1, it is characterised in that the side of housing (2) lower end is provided with use In the monitor (4) being monitored to lightning arrester core body (3), wherein, monitor (4) is connected with low-pressure line-outgoing end (8).

4. lightweight GIS arresters according to claim 1, it is characterised in that the upper and lower ends of housing (2) are respectively equipped with Metal flange for connecting disc insulator (1) and base plate (6).

5. lightweight GIS arresters according to claim 1, it is characterised in that the outer wall top die of housing (2) or spraying There is conductive silicon rubber layer, the conductive silicon rubber layer is connected with ground terminal.

6. lightweight GIS arresters according to claim 1, it is characterised in that lightning arrester core body (3) includes series connection closed assembly Some zinc oxide resistance sheets and the insulating bar for fixing each zinc oxide resistance sheet, insulating bar erect be fixed on base plate (6) On, the high-pressure side of lightning arrester core body (3) is connected through conducting rod and contact with the center conductor of disc insulator (1) successively.

7. lightweight GIS arresters according to claim 4, it is characterised in that metal flange is by hot pressing or mucilage binding Mode is connected with the upper end and lower end of housing (2).

8. lightweight GIS arresters according to claim 1, it is characterised in that the lower end of base plate (6) is fixed with installation branch Frame (10).