Photoacoustic spectrometry device for detecting dissolved gas in transformer oil

Abstract

The invention relates to a photoacoustic spectrometry device for detecting dissolved gas in transformer oil. The device is provided with a plurality of parallel oil-gas circulation loops independent of one another, and the oil-gas circulation loops share one set of optical detection system; each oil-gas circulation loop is composed of an oil-gas separation system, a gas path pipeline system and awaste treatment and discharge system, wherein the oil-gas separation system is respectively connected with the gas path pipeline system and the waste treatment and discharge system, the gas path pipeline system of the oil gas circulation loop is connected with an input end of a multi-cavity parallel detection photoacoustic spectrometry system, and an output end of the multi-cavity parallel detection photoacoustic spectrometry system is connected with a signal control and processing system and a data acquisition and communication system. The device is advantaged in that oil-gas separation of dissolved gas in oil of multiple transformers can be carried out at the same time, timeliness of simultaneous detection of the multiple transformers is ensured, and interference on the detection resultdue to the difference of the concentrations of the dissolved gas in the oil of the transformers, wrong communication of oil ways between the different transformers and wrong fusion of oil samples is avoided.

Description

technical field [0001] The invention relates to a gas photoacoustic spectrum detection device. Background technique [0002] Dissolved gas analysis in transformer oil is an important means to achieve early warning of transformer insulation faults by detecting the composition and concentration changes of dissolved substances in the transformer insulating oil medium. Compared with other gas detection technologies, photoacoustic spectroscopy technology has good long-term stability and high sensitivity; it does not consume gas samples; the single detection time is short, which is convenient for on-site detection; it can realize multi-component gas detection; the system structure is simple and the overall cost is low. advantage. Therefore, it has absolute advantages in early on-line monitoring and early warning of transformer insulation faults. However, the traditional photoacoustic spectroscopy online detection device for dissolved gas in transformer oil can only detect one oi...

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problem that the existing photoacoustic spectroscopy system for dissolved gas in transformer oil can only detect one oil sample at a time, or when multiple oil samples need to be processed, there is the problem of oil sample cross interference, and provides a multi-channel Photoacoustic spectroscopy device for detecting dissolved gas in transformer oil with parallel continuous detection function

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