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Gas insulating ring-network cabinet using SF6 gas as insulating and arc-extinguishing medium

A technology of gas insulation and arc extinguishing medium, applied in the direction of electrical components, switchgear settings, switchgear, etc., can solve the problems of inconvenient installation and maintenance of cables, poor environmental adaptability, complex structure, etc., and achieve resource saving and large isolation distance , good structural strength

Inactive Publication Date: 2014-07-23
金杰实业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the load switches and their operating mechanisms in the ring main unit have complex structures and poor reliability
Generally, there are the following defects: 1. Sub-box design, waste of resources; 2. The air insulation design of the cable head, poor environmental adaptability; 3. The three-phase cable head is arranged in columns, which is inconvenient for cable installation and maintenance

Method used

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  • Gas insulating ring-network cabinet using SF6 gas as insulating and arc-extinguishing medium
  • Gas insulating ring-network cabinet using SF6 gas as insulating and arc-extinguishing medium
  • Gas insulating ring-network cabinet using SF6 gas as insulating and arc-extinguishing medium

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Experimental program
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Embodiment Construction

[0015] Depend on Figure 1-Figure 2 It can be seen that the gas-insulated ring main unit 1.1 of the present invention is supported by primary electrical components and is filled with SF 6 The gas tank 1.5 is welded by stainless steel plate. The gas tank is supported by a box-type metal shell 1.6. The T-shaped spring mechanism 1.9 is arranged outside the gas tank and connected by a dynamic seal 1.11. The dynamic seal 1.11 is fixed in front of the gas tank. On the panel, one to six groups of three-position load switches 1.3 are arranged inside the gas box and arranged in tandem with the operating mechanism; the main busbar 1.2 for electrically connecting the three-position load switches is arranged on the upper part of the gas box, supporting The outer box-type metal frame 1.6 of the box is under the air box, and the three-phase insulating bushing 1.10 sealed in the air box is horizontally arranged at the lower part of the air box, and the electrical connection with the switch i...

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Abstract

The invention relates to a gas insulating ring-network cabinet using SF6 gas as an insulating and arc-extinguishing medium. The gas insulating ring-network cabinet mainly comprises a gas box, a T-shaped spring mechanism, a three-station load switch which is provided with one to six groups of common box structures and an external box type metal framework supporting the gas box. The three-station load switch is electrically connected with an external load or a power supply by insulated cable fittings and an insulated sleeve, a branch bus and a main bus which are sealed in the gas box. The gas insulating ring-network cabinet can be used for a ring-network power supply system with a rated voltage not higher than 12 kV, load control and short-circuit protection, and has the advantages of simple structure, convenience in operation, capability of being not affected by environment and the like.

Description

technical field [0001] The invention relates to an indoor complete switchgear power distribution product with an AC 50HZ and a rated voltage of 12kV, which is used in a ring network power supply system with a rated voltage of 12kV and below for load control and short-circuit protection. Specifically a SF 6 Gas insulated ring main unit with gas as insulation and arc extinguishing medium. Background technique [0002] Currently in SF 6 Gas-insulated ring main unit with gas as insulation and arc-extinguishing medium has many models and various structures. Most of the load switches and their operating mechanisms in the ring main unit have complex structures and poor reliability. Generally, there are the following defects: 1. Sub-box design, which wastes resources; 2. The air insulation design of the cable head has poor environmental adaptability; 3. The three-phase cable head is arranged in columns, which is inconvenient for cable installation and maintenance. Contents of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B13/045
Inventor 李明
Owner 金杰实业集团有限公司
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