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Gas density relay with online self-checking function and checking method thereof

A technology of gas density and relay, applied in the field of electric power, can solve problems such as potential safety hazards

Pending Publication Date: 2020-07-24
SHANGHAI ROYE ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if the on-site inspection of the inspectors is not performed in a standardized manner, there are still potential safety hazards

Method used

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  • Gas density relay with online self-checking function and checking method thereof
  • Gas density relay with online self-checking function and checking method thereof
  • Gas density relay with online self-checking function and checking method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150] like figure 1 As shown, the first embodiment of the present invention provides a gas density relay or a gas density monitoring device with an online self-verification function, including: a gas density relay body 1, a first pressure sensor 2, a second pressure sensor 4, a temperature sensor 3. Air pressure chamber 11 , pressure regulating mechanism 5 , on-line verification contact signal sampling unit 6 , intelligent control unit 7 , valve 12 , multi-way joint 9 and air supply interface 10 . Wherein, the air pressure chamber 11 is a sealed cavity surrounded by the casing of the gas density relay body 1, and the gas pressure in the casing is atmospheric pressure or a corresponding specified atmospheric pressure (such as standard atmospheric pressure); the multi-way joint 9 It is connected with the electrical equipment 8; the gas density relay body 1, the first pressure sensor 2, the temperature sensor 3 and the gas supply interface 10 are arranged on the multi-way joint ...

Embodiment 2

[0172] like figure 2 As shown, the second embodiment of the present invention provides a gas density relay or a gas density monitoring device with an online self-verification function, including: a gas density relay body 1, a first pressure sensor 2, a second pressure sensor 4, a temperature sensor 3. Air pressure chamber 11, pressure regulating mechanism 5, on-line verification contact signal sampling unit 6, intelligent control unit 7, multi-way joint 9 and air supply interface 10. Wherein, the air pressure chamber 11 is arranged outside the shell of the gas density relay body 1, and the air pressure chamber 11 communicates with the inner cavity of the shell of the gas density relay body 1; the multi-way joint 9 is connected with the electrical equipment 8; the gas The density relay body 1 , the first pressure sensor 2 , the temperature sensor 3 and the air supply interface 10 are arranged on the multi-way joint 9 .

[0173] Specifically, the gas density relay body 1 mainl...

Embodiment 3

[0176] like image 3 and 4 As shown, a gas density relay or a gas density monitoring device with an online self-verification function provided by Embodiment 3 of the present invention includes: a gas density relay body 1, a first pressure sensor 2, a second pressure sensor 4, a temperature sensor 3. Air pressure chamber 11, pressure regulating mechanism 5, online verification contact signal sampling unit 6, intelligent control unit 7, valve 12 and joint 13. Wherein, the gas density relay body 1 is provided with a joint 13 for fixed connection with the pressure regulating mechanism 5; the air pressure chamber 11 is a sealed cavity surrounded by the shell of the gas density relay body 1, and the The gas pressure is the atmospheric pressure or the corresponding specified air pressure; the pressure sensor 2, the temperature sensor 3, the online verification contact signal sampling unit 6 and the intelligent control unit 7 are arranged on the gas density relay body 1.

[0177]Spe...

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Abstract

The invention provides a gas density relay with an online self-checking function and a checking method thereof. The gas density relay comprises a gas density relay body, a first pressure sensor, a second pressure sensor, a temperature sensor, an air pressure chamber, a pressure adjusting mechanism, an online checking contact signal sampling unit and an intelligent control unit. A gas circuit and an air pressure chamber of the pressure regulating mechanism are connected with the second pressure sensor; the pressure is adjusted to rise and fall through the pressure adjusting mechanism; and the gas density relay body is subjected to contact action, the contact action is transmitted to the intelligent control unit through the online checking contact signal sampling unit, the intelligent control unit detects a contact signal action value and / or a return value of the gas density relay body according to a density value during the contact action, verification work is completed, and maintenancepersonnel do not need to go to the site for verification. And meanwhile, the pressure regulating mechanism is not connected with the gas density relay body or an SF6 gas circuit of the electrical equipment so that a sealing requirement is reduced, reliability of a power grid is improved, and manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a gas density relay with an online self-checking function and a checking method thereof, which is applied to high-voltage and medium-voltage electrical equipment. Background technique [0002] At present, SF6 (sulfur hexafluoride) electrical equipment has been widely used in the power sector and industrial and mining enterprises, which has promoted the rapid development of the power industry. In recent years, the capacity of my country's power system has expanded rapidly, and the amount of SF6 electrical equipment is increasing. The role of SF6 gas in high-voltage electrical equipment is arc extinguishing and insulation. If the density of SF6 gas in high-voltage electrical equipment decreases and the moisture content exceeds the standard, it will seriously affect the safe operation of SF6 high-voltage electrical equipment. Therefore, the power grid operating regulations ...

Claims

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Application Information

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IPC IPC(8): H01H35/26H01H35/32H01H35/38G01N9/00G01R31/327
CPCH01H35/26H01H35/32H01H35/38G01N9/00G01R31/327H01H33/563G01R31/1254G01R31/3275G01N9/266H01H35/28
Inventor 黄小泵金海勇廖海明叶小伟朱月明
Owner SHANGHAI ROYE ELECTRICAL CO LTD
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