SOUND VELOCITY MEASURING INSTRUMENT, GAS TURBINE FACILITY, AND SOUND VELOCITY MEASUREMENT METHOD

摘要

PROBLEM TO BE SOLVED: To provide a sound velocity measuring instrument having a simple configuration and capable of measuring a sound velocity of fluid rapidly and accurately, a gas turbine facility equipped therewith, and a sound velocity measurement method.;SOLUTION: A sound velocity measuring instrument includes: a resonance structure 31 where resonance is generated in its inside in which blast furnace gas G as a fluid flows; a pressure sensor 32 used for detecting a resonance frequency f which is a frequency of the generated resonance; and a control device 34 for deriving a sound velocity of the blast furnace gas G from a prescribed calculation formula expressing a correlation relationship between the resonance frequency f and the sound velocity c of the blast furnace gas G, on the basis of the resonance frequency f obtained by performing Fourier transformation of waveforms of pressure fluctuation detected by the pressure sensor 32.;COPYRIGHT: (C)2015,JPO&INPIT