SF6 gas decomposed product detection device and method based on photoacoustic spectrometry technology
A technology of gas decomposition and photoacoustic spectroscopy, which is used in measurement devices, material analysis by optical means, and material analysis, etc., can solve the problem that the measurement accuracy is difficult to meet the diagnosis of latent faults of SF6 equipment, the detection results are inaccurate, and the maintenance cost is high. problems, to achieve the effect of improving work reliability, reducing system noise, and having a simple and compact structure
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[0028] Embodiments of the present invention are further described below in conjunction with the accompanying drawings:
[0029] like figure 1 , figure 2 , image 3 , Figure 4 As shown, the SF6 gas decomposition product detection device based on photoacoustic spectroscopy technology according to the present invention includes a housing 1, a single chip 3 and its auxiliary circuits are arranged inside the casing 1, the single chip 3 and its accessory circuits are connected to a power supply 5, and the single chip 3 The infrared light source 2 is connected through the power switch tube 4. The infrared light source 2 is opposite to the light source entrance 8 of the photoacoustic cell 6. The photoacoustic cell 6 is provided with a resonant cavity 11. Hole 7, a microphone 12 is installed in the circular holes 7 on both sides, the microphone 12 is connected to the single-chip microcomputer 3 through the lock-in amplifying circuit 13, the single-chip microcomputer 3 is connected...
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