Monitoring system of sulfur hexafluoride (SF6) gas leakage

A monitoring system and gas leakage technology, which is applied in liquid tightness measurement using liquid/vacuum degree, measuring device, and material analysis through optical means, so as to reduce the number of on-site inspections and maintenance, improve stability, and realize automatic monitoring. Effect

Inactive Publication Date: 2015-07-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since multiple electrical devices are often distributed in a large geographical area, if the SF of multiple electrical devices is required 6 Gas leaks are monitored, conventional SF 6 The gas leakage detection method requires staff to go to the monitoring point for on-site processing every time

Method used

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  • Monitoring system of sulfur hexafluoride (SF6) gas leakage
  • Monitoring system of sulfur hexafluoride (SF6) gas leakage
  • Monitoring system of sulfur hexafluoride (SF6) gas leakage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] like figure 1 As shown, the SF of this example 6 The gas leakage monitoring system includes a host part, a remote terminal part and a signal transmission part. The host part includes a laser emitting module, a gas signal receiving module, and a gas signal processing module; the remote terminal part includes at least one remote terminal unit; each remote terminal unit includes a laser source, a laser detector and a gas measurement unit; the The signal transmission part includes a forward laser transmission module and a gas detection signal return module.

[0040] The laser emitting module transmits the emitted laser with a specific wavelength to the laser source of the remote terminal unit through the forward laser transmission module, the laser source transmits the laser with a specific wavelength to the gas measurement unit, and the laser with a specific wavelength passes through the gas measurement unit Then it is received by the laser detector; the laser detector con...

Embodiment 2

[0062] This embodiment is the same as Embodiment 1 except the following features.

[0063] The laser emitting module of this embodiment also includes a power controller for controlling the laser power generated by the laser. According to different practical application scenarios, different power lasers need to be used. For example, when there are multiple monitoring points to be detected, and the distance between the monitoring point and the monitoring center is long, the controller can be adjusted to increase the laser power emitted by the laser.

[0064] The laser detector of this embodiment is also connected with a detection sensitivity adjustment device for adjusting the sensitivity of the laser energy received by the laser detector. By setting the detection sensitivity adjusting device, the sensitivity of the laser energy received by the laser detector can be adjusted. Since the laser energy will attenuate after the laser is transmitted through the optical fiber, the la...

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PUM

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Abstract

The invention discloses a monitoring system of sulfur hexafluoride (SF6) gas leakage. The monitoring system of the SF6 gas leakage comprises a host machine part, a remote terminal part and a signal transmission part, wherein the host machine part comprises a laser emission module, a gas signal reception module and a gas signal processing module. The remote terminal part comprises at least one remote terminal unit. Each remote terminal unit comprises a laser source, a laser detector and a gas measuring unit. The signal transmission part comprises a forward direction laser transmission module and a gas detection pass back module. Compared with the prior art, the monitoring system of the SF6 gas leakage can veritably monitor the leakage condition of the SF6 of the monitored point, automatic monitoring of the SF6 gas leakage is achieved, and the time of patrol and overhaul of workers on site are reduced.

Description

technical field [0001] The invention relates to the detection field of electrical equipment, in particular to a method for detecting sulfur hexafluoride (SF 6 ) Gas leak detection system. Background technique [0002] SF 6 As a new generation of electrical insulation medium, it has super-strong insulation ability and arc extinguishing ability, and is non-combustible. It was first used in circuit breakers and combined electrical appliances in the 1960s. In recent years, it has been expanded to be used in transformers, cables, etc., SF 6 Gas-insulated equipment, including transformers, circuit breakers, transformers, and GIS (gas-insulated fully enclosed combined electrical appliances), has become the main development direction of high-voltage equipment. [0003] Currently applied to SF 6 The analysis methods of fault gases in electrical equipment mainly include gas chromatography, gas chromatography-mass spectrometry, infrared spectroscopy, electrochemical analysis, and ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/02G01N21/3504
Inventor 刘希喆陈睿潘霞远
Owner SOUTH CHINA UNIV OF TECH
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