FIELD: testing equipment. SUBSTANCE: plant detecting gas leakages from tested vessel 1 has standard vessel 2, main lines 3 and 4 feeding gas into tested and standard vessels in which valves 5, 6, 7 are installed, manometer 8 connected to tested vessel 1, measuring line 9 with differential manometer 10 positioned in it which presents U-shaped tube 11 filled with liquid 12 joined with one knee to tested 1 and with the other knee - to standard 2 vessels, counter 13 formed by laser 14, two flat optically transparent covers 15 and 16 sealing butts of U-shaped tube 11. Dummy mirror 17 is mounted along axis of one of them connected to tested vessel 1, semi-transparent mirror 18 and photodetector 9 are mounted in series along the other butt connected to standard vessel 2. Mirrors 17 and 18 are arranged at angle 45 deg with respect to axis of optical radiation of laser 14. Plant also includes signal processing unit 20 and indicator 21. Output of photodetector 19 is coupled to input of signal processing unit 20 which output is connected to input of indicator 21. EFFECT: increased accuracy and reliability of detection of leakages of gas. 1 dwg
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|---|---|---|---|
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