LASER SYSTEM FOR MEASURING HEAT CARRIER PARAMETERS IN AN ENERGY NUCLEAR REACTOR Russian patent published in 2019 - IPC G01N21/27 G21C17/22 

FIELD: nuclear energy.

SUBSTANCE: disclosed laser system for measuring heat carrier parameters in a power nuclear reactor comprises laser generator 1, a laser radiation measuring unit 2, inlet and outlet portholes 11, 12 of a heat carrier pipeline 10, beam expander 3, first and second photodetectors 4, 5, third photodetector unit 6 based on transmitting television camera, optical shutter 7, control unit 8 and information processing unit 9, lenses 13, 14, 17, 26, 28–35, reflecting mirrors 36–40 and 53, semitransparent mirrors 41–52 and 54, three controlled spatial filters 16, 25, 27 with control units 55–57, three photodetector heterodyne units 21–23, a fourth photodetector unit 18, two laser frequency shift units 19, 20 and two Fourier lenses 15, 24.

EFFECT: technical result consists in increase in the steam content parameters measurement accuracy, including at low steam moisture levels, in the heat carrier flow speed measurement accuracy improvement through the nuclear reactor pipeline, higher reliability and reliability of obtained results of heat carrier parameters measurement.

8 cl, 5 dwg