SF6 and SF6 mixed gas density relay verifying unit

A calibration device and mixed gas technology are applied in the calibration field of SF6 electrical products to overcome errors, improve calibration accuracy, and facilitate the inflation system.

Active Publication Date: 2013-08-14
NORTH CHINA ELECTRICAL POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the deficiencies in the prior art above, an embodiment of the present invention provides a SF 6 and SF 6 Mixed gas density relay calibration

Method used

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  • SF6 and SF6 mixed gas density relay verifying unit
  • SF6 and SF6 mixed gas density relay verifying unit
  • SF6 and SF6 mixed gas density relay verifying unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the SF of this example 6 The gas density relay calibration device includes: a high and low temperature constant temperature box 100, which is used to provide a high temperature constant temperature or a low temperature constant temperature to the test environment in the box; SF 6 Gas density relay; temperature sensor 102, installed in the high and low temperature thermostat 100, used to detect the temperature data of the test environment in the cabinet; regulating cylinder 104, arranged in the high and low temperature thermostat 100, through the gas pipeline and the relay mounting frame to be tested 101 phase connection for regulation to SF 6 SF provided by gas relay 6 gas pressure; SF 6 The gas storage bottle 103 is arranged in the high and low temperature thermostat 100, and is connected with the measured relay installation frame 101 through the gas pipeline, and is used for storing SF 6 Gas; the absolute pressure sensor 105 is connecte...

Embodiment 2

[0040] Such as image 3 As shown, the SF of this example 6 The mixed gas density relay calibration device includes: a high and low temperature constant temperature box 100, which is used to provide a high temperature constant temperature or a low temperature constant temperature to the test environment in the box; a measured relay mounting frame 101, which is set in the high and low temperature constant temperature box SF 6 Mixed gas density relay; temperature sensor 102, installed in the high and low temperature thermostat 100, used to detect the temperature data of the test environment in the cabinet; regulating cylinder 104, arranged in the high and low temperature thermostat 100, installed with the relay under test through the gas pipeline frame, used to adjust the pressure of the SF6 mixed gas provided to the SF6 mixed gas relay; the SF6 mixed gas gas cylinder 103 is arranged in the high and low temperature thermostat 100, and is connected with the measured relay mountin...

Embodiment 3

[0060] Such as image 3 As shown, the SF of this example 6 and SF 6 The mixed gas density relay calibration device includes: a high and low temperature constant temperature box 100, which is used to provide a high temperature constant temperature or a low temperature constant temperature to the test environment in the box; a measured relay mounting frame 101, which is set in the high and low temperature constant temperature box SF 6 Gas Density Relay or SF 6 Mixed gas density relay; temperature sensor 102, installed in the high and low temperature thermostat 100, used to detect the temperature data of the test environment in the cabinet; regulating cylinder 104, arranged in the high and low temperature thermostat 100, installed with the relay under test through the gas pipeline frame 101 for adjusting the SF provided to the relay under test 110 6 gas or SF 6 Pressure of mixed gas; SF 6 and SF 6 The mixed gas storage bottle 103 is arranged in the high and low temperature...

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PUM

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Abstract

The invention relates to a verifying unit which comprises a high-low temperature thermostat, and a to-be-tested relay mounting rack, a temperature sensor, an adjusting cylinder, and an SF6 and SF6 mixed gas cylinder which are arranged inside the high-low temperature thermostat, as well as an absolute pressure transducer, a relative pressure transducer, an SF6 gas cylinder, an N2 or CF4 gas cylinder, a vacuum pump and a control device which are arranged outside the high-low temperature thermostat, wherein the control device is respectively connected with the temperature sensor, a to-be-tested gas density replay, the absolute pressure transducer and the relative pressure transducer; and the control device is used for data processing, control command outputting, and verification result data display. The verifying unit is used for realizing the full-temperature accurate test to the SF6 gas density relay, and meanwhile realizes the full-temperature accurate test to the SF6 mixed gas density relay.

Description

technical field [0001] The invention is about SF 6 Calibration technology of electrical products, especially about SF 6 and SF 6 Full temperature calibration of mixed gas density relays, specifically a SF 6 and SF 6 Mixed gas density relay calibration device. Background technique [0002] SF 6 Gas density relay is SF 6 One of the key components of electrical switches, it is used to detect SF 6 SF in the electrical switch body 6 The change of gas density, its performance directly affects the SF 6 Reliable and safe operation of electrical switches. SF installed on site 6 Due to the infrequent action of the gas density relay, after a period of time, the phenomenon of inflexible action or poor contact of the contacts often occurs, and some also have poor temperature compensation performance, which may easily lead to SF 6 The gas density relay malfunctioned. [0003] In prior art, SF 6 The gas density relay calibrator can only test SF at normal temperature 6 The gas...

Claims

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Application Information

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IPC IPC(8): G01R31/327G01N9/00
Inventor 蔡巍李帆李志刚
Owner NORTH CHINA ELECTRICAL POWER RES INST
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