Dynamical tuning of helical screw compressor

A helical screw compressor dynamic depends on an instantaneous exhaust in discharge line. The present paper describes a method of flow rate pulsation of gas-oil mixture decreasing based on the developed technique of exhaust calculation. The technique take into account geometrical characteristics of screw pair, intaking window, thermal-gas-dynamic processes in the gas-oil mixture and compressor operating conditions. Flow rate pulsation in discharge line was calculated from developed technique. The intaking window configurations were considered according to calculation from developed technique. The intaking window configurations was modified with designing "auxiliary feed window". This intaking window configurations allows to decrease flow rate pulsation and improve dynamic characteristics of helical screw compressor.