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

A gas density, relay technology, applied in the field of electric power, can solve the problems of flashover, reduction of insulation strength on the surface of insulating parts, damage and other problems

Pending Publication Date: 2020-04-10
SHANGHAI ROYE ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3) When the temperature drops, too much moisture may form condensation water, which will significantly reduce the insulation strength of the surface of the insulating part, or e

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

[0162] Such as figure 1As 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 pressure sensor 2, a temperature sensor 3, and a gas circuit cutoff pressure adjustment mechanism 5. Online verification contact signal sampling unit 6, intelligent control unit 7, electrical equipment 8. The gas density relay body 1 , the pressure sensor 2 , the temperature sensor 3 and the intelligent control unit 7 are arranged on the gas circuit cutoff pressure regulating mechanism 5 . figure 1 It is a schematic diagram of the working state of a gas density relay or a gas density monitoring device with an online self-checking function.

[0163] Specifically, the air circuit partition pressure adjustment mechanism 5 includes a sealed cavity 501, a partition 502, a partition seal 503, a connecting part 504, a driving part 505, a first interface 506, a...

Embodiment 2

[0183] Such as Figure 4 As shown, a gas density relay or a gas density monitoring device with an online self-verification function provided by Embodiment 2 of the present invention includes: a gas density relay body 1, a pressure sensor 2, a temperature sensor 3, a valve 4, and a gas circuit cutoff Pressure regulating mechanism 5, online verification contact signal sampling unit 6, intelligent control unit 7, electrical equipment 8, multi-way joint 9. The pressure sensor 2 , temperature sensor 3 , on-line verification contact signal sampling unit 6 and intelligent control unit 7 are arranged on the gas density relay body 1 .

[0184] Figure 4 It is a schematic diagram of the working state of a gas density relay or a gas density monitoring device with an online self-checking function. Specifically, the air circuit partition pressure adjustment mechanism 5 includes a sealed cavity 501, a partition 502, a partition seal 503, a connecting part 504, a driving part 505, a first ...

Embodiment 3

[0188] Such as Figure 5 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 pressure sensor 2, a temperature sensor 3, and a gas circuit cutoff pressure adjustment mechanism 5. On-line verification contact signal sampling unit 6, intelligent control unit 7, electrical equipment 8, multi-way joint 9 and air supply joint 10. The air circuit cutoff pressure adjustment mechanism 5 includes a sealed cavity 501 , a cutoff piece 502 , a cutoff seal 503 , a connecting piece 504 , driving components 513 , 514 , a first interface 506 , and a second interface 507 . The gas density relay body 1 is installed on the gas circuit cut-off pressure adjustment mechanism 5; the pressure sensor 2, temperature sensor 3, online verification contact signal sampling unit 6 and intelligent control unit 7 are set together. The air path cutoff pressure adjustm...

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PUM

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Abstract

The invention provides a gas density relay with an online self-checking function and a checking method thereof, which are used for high-voltage and medium-voltage electrical equipment. The gas densityrelay comprises a gas density relay body, a gas density detection sensor, a gas path partition pressure adjusting mechanism, an online checking contact signal sampling unit and an intelligent controlunit, wherein the intelligent control unit controls a partition piece of the gas path partition pressure adjusting mechanism to move, so as to partition the gas circuit connection of a first interface and a second interface; meanwhile, the volume of a sealed cavity is changed, and the gas pressure of the gas density relay body is slowly reduced so as to generate a contact action; the contact action is transmitted to the intelligent control unit by means of the on-line checking contact signal sampling unit, the intelligent control unit detects an alarm and/or locking contact signal action value and/or a return value according to a density value of the contact action, the checking can be completed without the need for a maintainer to go to the site, the reliability and efficiency of a powergrid are greatly improved, and the cost is reduced. Particularly, an electric control valve is not needed, so that the sealing performance is better, and the size is smaller.

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, with the rapid economic development, the capacity of my country's power system has expanded rapidly, and the amount of SF6 electrical equipment has increased. 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 micro-water content exceeds the standard, it will seriously affect the safe operation of SF6 high-voltage electrical equipment: 1) The de...

Claims

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Application Information

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IPC IPC(8): G01R31/327G01N9/00G01D21/02H01H35/26H01H35/28
CPCG01D21/02G01N9/00G01R31/3272H01H35/26H01H35/28
Inventor 常敏黄小泵夏铁新郭正操曾伟金海勇
Owner SHANGHAI ROYE ELECTRICAL CO LTD
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