Flow characteristics of pneumatic booster regulator

For the purpose of providing theoretical foundation for the optimization and selection of pneumatic boost regulator, and considering of the working process of pneumatic boosting regulator, piston friction, air heat exchange and other factors non-linear differential equations were set up by using first law of thermodynamics, gas state equation, continuity equation, energy equation and momentum equation, and by MATLAB/simulink, the variation of pressure and the flow of air in boosting chambers and driving chambers were obtained. According to the principle of simulation, pneumatic regulator was studied experimentally, and the curves of exhaust flow and pressure of air in tank were got. The simulation results are in good agreement with the experimental results, which show that the maximum air consumption and exhaust go down with the increase of boosting rate, and the air exhaust rate is about 50% while the efficiency is between 60%-70%.