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Improvement method for gas density relay

A gas density and relay technology, applied in the field of electric power, can solve the problems of reduced insulation strength on the surface of insulating parts, flashover, and potential safety hazards.

Active Publication Date: 2019-12-06
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 even flashover, causing serious damage
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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  • Improvement method for gas density relay
  • Improvement method for gas density relay
  • Improvement method for gas density relay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0146] Such as figure 1 As shown, a gas density relay with an online self-verification function provided by Embodiment 1 of the present invention includes: a gas density relay body 1, a pressure sensor 2, a temperature sensor 3, a temperature adjustment mechanism 5, and an online verification contact signal sampling Unit 6, an intelligent control unit 7, a multi-way connector 9 and an air supply interface 10. The temperature adjustment mechanism 5 is arranged opposite to the gas density relay body 1 , and the temperature sensor 3 is arranged in the casing of the gas density relay body 1 . The gas density relay body 1 and the gas supply interface 10 are arranged on the multi-way joint 9 , and the pressure sensor 2 , the online verification contact signal sampling unit 6 and the intelligent control unit 7 are arranged on the density relay body 1 . The temperature adjustment mechanism 5 is arranged outside the density relay body 1 . Specifically, the gas density relay body 1 co...

Embodiment 2

[0175] Such as image 3 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 temperature adjustment mechanism 5. On-line verification contact signal sampling unit 6, intelligent control unit 7, multi-way joint 9, air supply interface 10, pressure adjustment mechanism 11. One end of the valve 4 is sealingly connected to an electrical device 8 , and the other end of the valve 4 is connected to a multi-way joint 9 . The gas density relay body 1 is installed on the multi-way joint 9; the pressure sensor 2 and the temperature sensor 3 are arranged on the gas density relay body 1, and the pressure sensor 2 is connected with the gas density relay body 1 on the gas path; the temperature adjustment The mechanism 5 is set on the density relay body 1; the temperature adjustment mechanis...

Embodiment 3

[0181] Such as Figure 4 As shown, the third embodiment of the present invention provides a gas density relay with an online self-verification function, including: a gas density relay body 1, a first pressure sensor 21, a second pressure sensor 22, a first temperature sensor 31, a second pressure sensor 2. Temperature sensor 32, temperature adjustment mechanism 5, online verification contact signal sampling unit 6, intelligent control unit 7, multi-way joint 9, air supply interface 10, self-sealing valve. One end of the self-sealing valve is sealed and connected to electrical equipment, and the other end of the self-sealing valve is connected to the multi-way joint 9 . The gas density relay body 1, the second pressure sensor 22, the second temperature sensor 32, the temperature adjustment mechanism 5, and the gas supply interface 10 are set on the multi-way joint 9; the first pressure sensor 21 and the first temperature sensor 31 are set on the gas density On the relay body 1...

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Abstract

The invention provides an improvement method for a gas density relay. The method is applied to high pressure and low pressure electrical equipment. A gas density detection sensor, a temperature adjusting mechanism, an online check contact signal sampling unit and an intelligent control unit are added on a conventional gas density relay body. The temperature adjusting mechanism adjusts rise and fall of temperature of a temperature compensation element of the gas density relay, so as to enable the gas density relay body to perform a contact operation, the contact operation is transmitted to theintelligent control unit through the online check contact signal sampling unit, the intelligent control unit detects an alarm of the gas density relay body and / or locked contact signal operation valueand / or return value according to a density value of the contact operation. Maintenance workers can complete checking of the gas density relay without going to the site, so that the power grid stability is improved greatly, the gas density relay can be checked without installing a valve joint, the efficiency is improved, and the cost is lowered.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method for transforming a gas density relay used in 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 density of SF6 gas is reduced to a certain extent. Will ...

Claims

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Application Information

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IPC IPC(8): G01R31/327G01N9/36G01N9/00G05D16/20H01H35/26H01H35/28
CPCG01R31/3275G01N9/36G01N9/002G05D16/2006H01H35/26H01H35/28G01N2009/006
Inventor 金海勇夏铁新黄小泵郭正操常敏王乐乐
Owner SHANGHAI ROYE ELECTRICAL CO LTD
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