Study on Characteristics of High-Pressure Precision Flow Valve of Metal Rubber

A new type of precision flow valve is designed by used the combination of piezoelectric ceramic and metal rubber, the mathematical model that possesses flow characteristics at the valve outlet is established based on Darcy´s law and Newton´s first law, the influence of different driving voltage and different parameters of metal rubber ring on flow characteristics is analyzed through using MATLAB software, and the effects of metal rubber ring on the flow stability of fluid in the valve outlet is analyzed on simulation by means of FLUENT software. The results show that: the flow characteristics of valve are related to the driving voltage of the piezoelectric ceramic and the parameters of metal rubber ring After the metal rubber ring is installed at the valve outlet, the fluid flow at the valve exit is gentler. The flow direction of fluid tends to be consistent, which is approximate to the laminar flow. To a certain extent, it improves the stability of the valve output flow (pressure).