Влияние противодавления на коэффициент расхода дросселирующих диафрагм

Abstract

Have been supplied materials on the definition of the design characteristics of throttling apertures of gas turbine and terrestrial applications. Has been presented the effect on the flow characteristics of throttling apertures backpressure environment. The tests have found that the flow rate coefficient μ in the system with backpressure is above 20...30% in comparison with a system without backpressure with the same pressure difference. In the experiment has been considered streaming as throw the hole with a sharp edge and chamfered at 0.5 ... 0 7 mm on the inlet edge. It has been proposed that determination the flow rate in the system backpressure make a correction, which depends on the pressure discharge coefficient.