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Remote transmission gas density relay system and calibration method thereof

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

Pending Publication Date: 2019-11-12
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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  • Remote transmission gas density relay system and calibration method thereof
  • Remote transmission gas density relay system and calibration method thereof
  • Remote transmission gas density relay system and calibration method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0197] figure 1 It is a schematic diagram of the structure of a gas density relay. Such as figure 1 As shown, the gas density relay 1 includes: a housing 101, and a base 102, an end seat 108, a pressure detector 103, a temperature compensating element 104, several signal generators 109, and a core 105 arranged in the housing 101 , Pointer 106, Dial 107. One end of the pressure detector 103 is fixed on the base 102 and communicated with it, and the other end of the pressure detector 103 is connected to one end of the temperature compensation element 104 through the end seat 108, the The other end of the temperature compensating element 104 is provided with a crossbeam, and the crossbeam is provided with an adjusting member that pushes the signal generator 109 to make the contacts of the signal generator 109 on or off. The movement 105 is fixed on the base 102; the other end of the temperature compensation element 104 is also connected to the movement 105 through a connecting...

Embodiment 2

[0226] Such as Figure 4 As shown, a gas density monitoring device includes: a gas density relay 1 (the gas density relay 1 also mainly includes: a housing, and a base, a pressure detector, a temperature compensation element, a movement, and a pointer arranged in the housing. , dial, end seat, several signal generators and electrical equipment connection joints), pressure sensor 2, temperature sensor 3, valve 4, pressure adjustment mechanism 5, online verification contact signal sampling unit 6 and intelligent processor 7.

[0227] The air inlet of the valve 4 is sealed and connected to the electrical equipment through the electrical equipment connecting joint 1010 , and the air outlet of the valve 4 communicates with the base of the gas density relay 1 and the pressure detector. The pressure sensor 2, the temperature sensor 3, the online verification contact signal sampling unit 6, and the intelligent processor 7 are arranged on or in the housing of the gas density relay 1, a...

Embodiment 3

[0235] Such as Figure 5 As shown, a gas density monitoring device, compared with the second embodiment, increases the gas supply interface 10 and the self-sealing valve 11. One end of the self-sealing valve 11 is sealed and connected to electrical equipment, and the other end of the self-sealing valve 11 communicates with the air inlet of the valve 4 and the air supply interface 10 through a connecting pipe.

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Abstract

The invention discloses a remote transmission gas density relay system and a verification method thereof, and the system comprises a background monitoring terminal which achieves the remote communication with at least one gas density monitoring device through communication equipment, and completes the online monitoring and verification of a gas density relay; the gas density monitoring device which comprises a gas density relay, a gas density detection sensor, a pressure regulating mechanism, a valve, an online check contact signal sampling unit and a circuit control part; a background monitoring terminal which controls the intelligent processor to close the valve. The pressure adjusting mechanism is used for adjusting the pressure to rise and fall through; the gas density relay is subjected to contact action; the signals are transmitted to the intelligent processor through the online check contact signal sampling unit, and the intelligent processor detects a contact signal action value and / or a return value according to the gas density value when the contact acts, so the remote verification of the gas density relay can be completed without the need for maintainers to go to the site; meanwhile, the maintenance-free can be achieved, and the benefits and reliable and safe operation of a power grid are greatly improved.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a remote gas density relay system applied to high-voltage and medium-voltage electrical equipment and a calibration method thereof. Background technique [0002] Gas density relay is generally used to monitor and control the density of insulating gas in high-voltage and medium-voltage electrical equipment. It is equipped with a contact signal control circuit inside. When a gas leak occurs, the contact of the gas density relay will act to generate a contact signal, and the contact signal control circuit will send an alarm or block according to the contact signal, so as to realize the safe operation protection of electrical equipment. [0003] 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 rapi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H35/26H01H35/28G01N9/26G01K15/00G01L27/00
CPCH01H35/26H01H35/28G01N9/266G01K15/005G01L27/005
Inventor 夏铁新贺兵常敏郭正操廖海明金海勇王恩林
Owner SHANGHAI ROYE ELECTRICAL CO LTD
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