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Gas insulation device

A technology of gas-insulated equipment and insulating gas, which is applied in the direction of electrical components, switchgear settings, products, etc., and can solve problems such as reduced insulation endurance, damage to lubricants, life of sealing materials, and inability to absorb

Pending Publication Date: 2022-04-15
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CO 2 Because the molecular diameter is about 0.33nm, it is different from the SF of 0.550nm 6 Small compared with useless substances (HF, CO, O 3 ), the molecular diameter of the same degree, so in the physical adsorption using the molecular sieve effect based on the pore size of the adsorbent, CO as an insulating gas 2 Adsorption, unable to fully adsorb the above-mentioned useless substances
[0009] It should be noted that HF ​​and H contained in a trace amount in the gas 2 O-bonded, reacts with metallic materials (Fe, Al) to cause corrosion, and is toxic to the human body when released in the atmosphere
In addition, CO is toxic to humans when released in the atmosphere
In addition, if a large amount of CO is generated (vol% level), the insulation resistance may decrease
Furthermore, O 3 There is a possibility that the lifetime of lubricants and sealing materials (resins) will be significantly impaired by ozone cleavage, and it is toxic to the human body when released in the atmosphere

Method used

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no. 1 Embodiment approach

[0029] For the first embodiment, use figure 1 Be explained. The gas-insulated device of the present embodiment is an inflated gas-insulated breaker. figure 1 It is a partial schematic cross-sectional view of the gas-insulated device (gas-insulated breaker) of the present embodiment.

[0030] Such as figure 1 As shown in , an insulating gas 2 is filled in a grounded airtight container 1 made of metal or porcelain tube, etc. In the airtight container 1, a fixed contact part 31 and a movable contact part 41 are arranged facing each other, and a fixed arc starting auxiliary contact 32 and a movable arc starting auxiliary contact are respectively arranged on the fixed contact part 31 and the movable contact part 41. Point 42. The high voltage section is constituted by the fixed contact portion 31 and the movable contact portion 41 . An O-ring or the like is arranged in the sealing portion of the airtight container 1 to form an airtight structure.

[0031] The arc starting aux...

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PUM

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Abstract

A gas insulation device according to an embodiment of the present invention has a sealed container, an insulating gas, a high-voltage part, and a removal material. The insulating gas is filled in the sealed container and contains CO2 and O2 as main components. The high-voltage part is accommodated in the sealed container. The removal material reduces the concentrations of HF, CO, and O3 in the insulating gas.

Description

technical field [0001] Embodiments of the present invention relate to gas insulated equipment. Background technique [0002] In the gas-insulated equipment for power transmission and distribution in the power system, sulfur hexafluoride (hereinafter referred to as SF 6 ). [0003] SF 6 Since the GWP (Global Warming Potential) is 23,500 (AR5; the latest value based on the IPCC 5th Evaluation Report), the impact on the environment is large when leaking, so carbon dioxide (hereinafter referred to as CO) with a lower environmental load is used. 2 ) is attracting attention as an alternative to insulating gas. known to use CO 2 When used as an insulating gas, by mixing oxygen (hereinafter referred to as O 2 ), the effect of improving the blocking performance / insulation resistance can be obtained. [0004] Decomposition products are produced when the insulating gas enclosed in the gas-insulated device is exposed to the arc during the switching operation. The decomposition pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B13/055
CPCH01H33/56H01H2033/566H01H33/22H01H33/7023H01H33/91H02B13/055
Inventor 长谷川朋宽井上彻加藤纪光真岛周也内井敏之
Owner KK TOSHIBA