Maintenance-free gas density relay and calibration 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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  • Maintenance-free gas density relay and calibration method thereof
  • Maintenance-free gas density relay and calibration method thereof
  • Maintenance-free gas density relay and calibration method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] Such as Figure 1 ~ Figure 2 As shown, a maintenance-free gas density relay or gas density monitoring device provided by Embodiment 1 of the present invention includes: a gas density relay body 1, a gas density detection sensor (pressure sensor 2, temperature sensor 3), a gas circuit shut-off Pressure regulating mechanism 5 , on-line verification contact signal sampling unit 6 , intelligent control unit 7 , multi-way joint 9 , air supply joint 10 and lead-out wire seal 11 . Wherein, the gas density relay body 1 is set on the first interface 510 of the gas circuit shut-off and pressure regulating mechanism 5; the pressure sensor 2, the temperature sensor 3, the online verification contact signal sampling unit 6 and the intelligent control unit 7 are provided with the gas circuit Turn off the fourth interface of the pressure regulating mechanism 5; the electrical equipment 8 communicates with the second interface 511 of the gas circuit shut-off pressure regulating mechani...

Embodiment 2

[0126] Figure 4 It is a schematic diagram of the working state of a maintenance-free gas density relay or gas density monitoring device in the second embodiment. Such as Figure 4 As shown, a maintenance-free gas density relay or gas density monitoring device includes: a gas density relay body 1, a pressure sensor 2, a temperature sensor 3, a gas circuit shut-off and pressure regulating mechanism 5, and an online verification contact signal sampling unit 6 And intelligent control unit 7. Among them, 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 .

[0127] The difference from Embodiment 1 is:

[0128] 1) The driving component 58 is arranged outside the sealed cavity 53 , and one end of the sealed cavity 53 is provided with a third interface, and the first interface 510 is closer to the third interface than the second interface 511 . On...

Embodiment 3

[0131] Such as Figure 5 Shown, the difference of this embodiment compared with embodiment two is:

[0132] The air circuit shut-off and pressure regulating mechanism 5 also includes a sealing joint 514, one end of the sealing joint 514 is in sealing connection with the third interface 513, and the other end of the sealing joint 514 is in sealing connection with the sealing plate 5141 The sealing plate 5141 is connected or abutted against the driving end of the driving part 58 , or the sealing joint 514 seals the connecting part 57 and the driving part 58 in the sealing joint 514 . One end of the connecting piece 57 is connected to the pressure changing piece 56, and the other end passes through the sealing joint 514 and is connected to the driving part 58 through the sealing plate 5141, and the outer surface of the connecting piece 57 is connected to the connecting piece 57. The sealing member 515 is in sealing contact with the third interface 513 . The sealing member conne...

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PUM

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Abstract

The invention provides a maintenance-free gas density relay and a calibration method thereof. The maintenance-free gas density relay comprises a gas density relay body, a gas density detection sensor,a gas circuit turn-off pressure regulating mechanism, an online calibration contact signal sampling unit and an intelligent control unit. The intelligent control unit makes a driving part of the gascircuit turn-off pressure regulating mechanism drive a pressure changing part to move so that a cut-off piece cuts off a gas circuit between the electrical equipment and the gas density relay body; and meanwhile, movement of the pressure change piece enables a volume of a gas chamber of the gas circuit turn-off pressure regulating mechanism to change so that the gas density relay body generates contact action, the intelligent control unit detects a contact signal action value according to a density value during the contact action, operation and maintenance personnel do not need to go to the site, and maintenance-free performance of the density relay is realized. And particularly, the gas circuit turn-off pressure regulating mechanism comprising the cut-off piece and an elastic piece is adopted so that problems of gas circuit shutoff and pressure regulation are solved, and sealing performance is good, a size is small, reliability is high and a service life is long during operation and calibration.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a maintenance-free gas density relay and a calibration method thereof which are applied to high-voltage and medium-voltage electrical equipment. Background technique [0002] 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: the density of SF6 gas will decrease to a certain level. Loss of insulation and arc extinguishing properties. [0003] With the continuous vigorous development of China's smart grid, intelligent high-voltage electrical equipment, as an important part and key node of the smart substation, plays a pivotal role in the security of the smart grid. At present, most high-voltage electrical equipment is SF6 ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H35/26H01H35/38G01N9/00G01R31/327
CPCG01N9/00G01R31/327H01H35/26H01H35/38
Inventor 金海生王恩林贺兵蒲东海金海勇
Owner SHANGHAI ROYE ELECTRICAL CO LTD
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