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Gas circuit partition pressure adjusting mechanism for online verification of density relay

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

Pending Publication Date: 2020-04-03
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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  • Gas circuit partition pressure adjusting mechanism for online verification of density relay
  • Gas circuit partition pressure adjusting mechanism for online verification of density relay
  • Gas circuit partition pressure adjusting mechanism for online verification of density relay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] figure 1 It is a schematic structural diagram of an air circuit cutoff pressure adjustment mechanism provided in Embodiment 1 of the present invention. Such as figure 1 Said, an air circuit cutoff pressure adjustment mechanism for on-line verification of density relays, comprising: an air circuit isolation pressure adjustment mechanism body 5, the air circuit isolation pressure adjustment mechanism body 5 includes a sealed cavity 501, and the sealed cavity The side wall of the cavity 501 is provided with a first interface 506 connected with the gas path of the gas density relay, and a second interface 507 connected with the gas path of the electrical equipment, the first interface 506 and the second The relative positions of the interfaces 507 are staggered. The sealed chamber 501 is provided with a partition 502, which is in sealing contact with the inner wall of the sealed chamber 501. The partition 502 includes, but is not limited to, one of a piston and a sealed p...

Embodiment 2

[0088] figure 2 It is a schematic structural diagram of an air circuit cutoff pressure regulating mechanism in working state provided by Embodiment 2 of the present invention. Such as figure 2 As shown, a gas circuit cutoff pressure adjustment mechanism for on-line verification of density relays includes: pressure sensor 2, temperature sensor 3, gas circuit cutoff pressure adjustment mechanism body 5, online verification contact signal sampling unit 6, and intelligent control unit 7. The pressure sensor 2, the temperature sensor 3 and the intelligent control unit 7 are arranged on the body 5 of the air circuit cutoff pressure regulating mechanism.

[0089] Specifically, the body 5 of the air circuit cut-off pressure regulating mechanism includes a sealed cavity 501, a cut-off piece 502, a cut-off seal 503, a connecting piece 504, a driving component 505, a first interface 506, a second interface 507, a seal coupling 508, The fourth interface 509, the contact signal interl...

Embodiment 3

[0112] Such as Figure 5 As shown, a gas circuit cut-off pressure adjustment mechanism provided by Embodiment 3 of the present invention includes: a pressure sensor 2, a temperature sensor 3, a valve 4, a gas circuit cut-off pressure adjustment mechanism body 5, an online verification contact signal sampling unit 6, Intelligent control unit 7, multi-way connector 9. Among them, the body 5 of the gas circuit cutoff pressure regulating mechanism includes a sealed cavity 501, a cutoff piece 502, a cutoff seal piece 503, a connecting piece 504, a driving part 505, a first interface 506, a second interface 507, a third interface 511, a connecting piece Seal 510 , cavity (or housing) 512 . One end of the valve 4 is connected to the third interface 511 , and the other end of the valve 4 is connected to the multi-way joint 9 . The first interface 506 is disposed between the second interface 507 and the third interface 511 . The connector 504 is sealed with the sealing cavity 501 th...

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Abstract

The invention provides a gas circuit partition pressure adjusting mechanism for online verification of a density relay, the gas circuit partition pressure adjusting mechanism comprises a gas circuit partition pressure adjusting mechanism body, the pressure adjusting mechanism body comprises a sealed cavity, a partition piece, a connecting rod and a driving part, and the sealed cavity is provided with a first interface and a second interface; a gas circuit of the gas circuit partition pressure regulating mechanism body is communicated with a gas circuit of the gas density relay through a firstinterface and is communicated with a gas circuit of electrical equipment through a second interface; the driving part drives the connecting rod so as to drive the partition piece to move in the sealedcavity; a gas path between the first interface and the second interface is isolated; the volume of the sealed cavity is changed according to the position change of the partition piece; therefore, thepressure of the gas density relay is adjusted to rise and fall, the gas density relay is enabled to generate contact signal action, online verification of the gas density relay is realized, verification can be completed without going to the site by maintainers, the reliability and efficiency of a power grid are greatly improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to an air circuit cutoff pressure adjustment mechanism for on-line calibration of density relays 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 densit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327G01N9/00G01N9/26G05D16/20
CPCG01N9/00G01N9/002G01N9/266G01N2009/006G01R31/3274G05D16/2093
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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