Study of gas-liquid coupling in dust separator based on time-averaged value of pulsatile pressure

Study object is the throttle-type self-excitation dust collection.Through the measurement of time-averaged value of pulsatile pressure on turbulence flow,gas-liquid coupling status in dust separator was studied.The primary conclusions are made as follows:the dedusting effect is influenced by the height of the catch-cavity because the gas-liquid coupling status is changed with the height of the catch-cavity.And the suitable height of catch-cavity is 300 mm.Pressure of catch-cavity reduce gradually along with the direction of flown line.As the throttle strength value α aggrandizing,the whole pressure value of catch-cavity drops,and the vortex intensity produced in whirlpool area is also reduced.As the changing of α value,the water injected in the catch-cavity will influence the gas-liquid coupling of catch-cavity.There are several influence formats which are increasing throttle resistance,exciting dust removal drip,transferring the airflow direction and the interaction of all.If it has the size of 400 mm×300 mm,the dust collection has the third influence format and with good dedusting effect when the α value between 250/300~235/300.