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Cabin static contact-free non-SF6 gas insulated isolating switchgear

A gas-insulated, isolating switch technology, which is applied in the setting of switchgear, switchgear, electrical components, etc., can solve the problems of weak insulation, poor arc extinguishing effect, and weak safety, and achieves strong environmental protection and safety. Good, maintenance-free operation

Inactive Publication Date: 2017-06-13
JIANGSU DAQO CHANGJIANG ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems of poor arc extinguishing effect, weak insulation and weak safety of non-SF6 gas switchgear existing in the prior art, the present invention provides a non-SF6 gas-insulated isolating switchgear without a chamber static contact

Method used

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  • Cabin static contact-free non-SF6 gas insulated isolating switchgear
  • Cabin static contact-free non-SF6 gas insulated isolating switchgear
  • Cabin static contact-free non-SF6 gas insulated isolating switchgear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as Figure 1-4 As shown, a non-SF6 gas-insulated isolating switchgear with non-compartment static contacts includes a gas chamber 1, a mechanism chamber 2, an instrument chamber 3, a cable chamber 4 and a pressure relief chamber 5, and may also include a bus coupler chamber, The bus coupler room is set above or on the side of the gas chamber or in a surrounding setting. This kind of setting is based on the installation requirements of the bus coupler and has a high degree of freedom. The gas chamber 1 includes a bus coupler 11, a circuit breaker 12, and three stations connected in sequence. The switch 13, busbar 14, outlet bushing 15 and gas box 16, three-position switch 13, circuit breaker 12, and busbar 14 are installed in the airtight gas box 16, which makes the switchgear maintenance-free and effectively prevents the insulation from being damaged by harsh environmental conditions. performance damage, to ensure the normal and safe operation of the switchgear. T...

Embodiment 2

[0047] Embodiment 2 is basically the same as Embodiment 1, and further includes that a pressure relief device I163 for preventing internal arcing is installed on the gas box 16 . The pressure relief device I163, the pressure relief device can be a pressure relief valve and other devices that can perform pressure relief in electrical equipment, and the pressure relief pressure can be adjusted as required to ensure that the pressure in the gas tank 16 will not be too high. The switchgear is safe and stable.

Embodiment 3

[0049] Embodiment 3 is basically the same as Embodiment 1 or 2, and further includes that the cable chamber 4 is provided with a pressure relief device II41. The pressure relief device can be a pressure relief valve, an automatic pressure relief device and other devices that can relieve pressure in the electrical equipment, which ensures that the pressure in the gas box 16 will not be too high, and the switchgear is safe and stable.

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Abstract

The invention discloses a cabin static contact-free non-SF6 gas insulated isolating switchgear, and belongs to the field of medium-voltage switchgears. For the problems that in the prior art, the non-SF6 gas insulated switchgear is poor in arc extinguishing effect, poor in insulativity and weak in safety, the cabin static contact-free non-SF6 gas insulated isolating switchgear comprises an air chamber, a mechanism chamber, an instrument chamber, a cable chamber, a pressure release chamber and a busbar connector chamber; the air chamber comprises a busbar connector, a circuit breaker, a three-position switch, a busbar, a lead-out bushing and a gas tank which are connected in sequence, the three-position switch, the circuit breaker and the busbar are installed in the closed gas tank, the busbar connector and the lead-out bushing are installed on a gas tank shell, the gas tank is filled with non-SF6 insulating gas, and the circuit breaker is an enclosed type vacuum arc extinguishing circuit breaker. The switchgear is free of maintenance, damage of a severe environment to the insulativity is effectively prevented, and normal and safe operation of the switchgear is guaranteed.

Description

technical field [0001] The invention relates to the field of medium-voltage switchgear, more specifically, to a non-SF6 gas-insulated isolating switchgear without a chamber static contact. Background technique [0002] Existing medium-voltage switchgear mainly adopts air insulation or SF6 gas insulation. Air-insulated switchgear is easily affected by the surrounding environment of the switchgear (such as salt, humidity, harmful gas, high altitude, dust, etc.) because its insulating medium is air. ), leading to insulation damage and accidents in switchgear. [0003] In order to eliminate the influence of the environment on the switchgear, a SF6 gas insulated switchgear (such as C-GIS) has appeared, and the high-voltage live parts and switches are installed in a metal-made, airtight gas box that can withstand a certain pressure , and then fill the gas box with SF6 insulating gas; however, SF6 gas will be decomposed into toxic gas by the arc and is a thermal effect gas. Its th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B13/035H02B13/055
CPCH02B13/0352H02B13/055
Inventor 尚雨范永龙黄强
Owner JIANGSU DAQO CHANGJIANG ELECTRICAL
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