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SF6 decomposition gas infrared spectrum multi-component detection method and device

A technology of infrared spectroscopy and gas decomposition, applied in the field of SF6 decomposition gas measurement method and device based on gas infrared absorption spectroscopy, can solve the problems of long detection period, offline measurement of a single detection component, etc., and achieve increased detection sensitivity and no interference on-line Effect of Gas Concentration Measurement

Active Publication Date: 2012-05-09
NANJING SHUNTAI TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a SF for the defects of traditional instruments in the prior art that can only be measured offline, a single detection component, and a long detection cycle. 6 Decomposition gas infrared spectrum measurement method and device

Method used

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  • SF6 decomposition gas infrared spectrum multi-component detection method and device
  • SF6 decomposition gas infrared spectrum multi-component detection method and device
  • SF6 decomposition gas infrared spectrum multi-component detection method and device

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0026] Such as figure 1 Shown, SF 6 Decomposed gas infrared spectrum detection device, including a main box 1, on which a touch LCD display 2, a power socket 18, a main power switch 3, a sample gas outlet pipe quick-plug interface 10, and a sample gas inlet pipe quick-plug interface 13 are installed , USB interface 15, 485 data communication interface 16 and Ethernet interface 17, it is characterized in that the long optical path optical absorption pool 4, infrared pyroelectric detector (5), preamplifier 6, pressure sensor 8, Gas pump 9, one-way solenoid valve 11, DC stabilized power supply 19, communication circuit module 20, data acquisition, processing and control module 21, signal interface board 22, filter and chopping board 23, DC synchronous motor 24, infrared light source 25 And optocoupler 26; wherein infrared pyroelectric detector 5 detects the outgoin...

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Abstract

The invention discloses an SF6 decomposition gas infrared spectrum multi-component detection method and a device. According to the method, a chopped wave modulation wheel and a spectroscopical filtration wheel in a traditional non-dispersion infrared spectrum technology are combined into a whole, a modulation filtration wheel is utilized to realize simultaneous measurement of multi-component gas,and a long path multiple reflection absorption technology is combined simultaneously to increase detection sensitivity. The device comprises an optics unit, a gas circuit unit and an electronics unitarranged in a main machine box. The SF6 decomposition gas infrared spectrum multi-component detection method and the device are suitable for electrical equipment fault monitoring and diagnosing in anelectrical system with SF6 gas being an insulation and arc extinction medium. On-line gas concentration measurement with high speed, high sensitivity and non-interference is realized.

Description

technical field [0001] The invention belongs to a gas infrared spectrum measurement method and instrument, in particular to a gas infrared absorption spectrum based SF 6 Decomposition gas measurement method and device. Background technique [0002] SF 6 Because of its superior insulation and arc extinguishing medium, it is widely used in high-voltage electrical equipment. With the rapid development of the domestic power industry, since the 1980s, SF 6 Electrical equipment has gradually replaced traditional oil-filled electrical equipment, which has achieved good results for the safe, stable and economical operation of the power system. However, due to some defects in the design, manufacture, installation, operation and maintenance of the equipment, which affect the normal operation of the equipment and even cause accidents, the SF was detected in time. 6 The internal defect of electrical equipment is of great significance to ensure the safe operation of equipment and pow...

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Application Information

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IPC IPC(8): G01N21/35G01N21/01G01N21/3518
Inventor 蔡毅敏
Owner NANJING SHUNTAI TECH
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