Session: 5.2.2 - Novel Measurement Techniques in Fluid Engineering II

Paper Number: 158118

158118 - Dynamic Characteristics Research of the Positive Pressure Reducing Valve Based on AMESim 

Abstract: 

Positve pressure reducing valves are widely used in industry because of their simple structure and strong decompression ability. Dynamic characteristic is an important index to measure pressure reducing valve’s response performance to pressure change. The parameters of spool component, such as spring stiffness (k), spring damping (ζ), spring preload force (f), feedback chamber diameter (d_fc) and spool mass (m), have a great influence on its dynamic characteristics. A simulation model is established by AMESim through analyzing the structure and working principle of the positive pressure reducing valve. The effects of spool component parameters on its dynamic characteristics under working conditions are analyzed. The parameters of the spool component are optimized by using Non-dominated Sorting Genetic Algorithm (NSGA). The results show that the k and f greatly affect the overshoot but have a small effect on adjustment time. On the contirary, the m has a great influence on the adjustment time but barely changes overshoot. The  and  both have a great impact on the overshoot and the adjustment time. The optimal parameter combination obtained by NSGA is:  d_fc= 75 mm, k = 50 N/mm,  ζ= 30 N/(m/s), f = 70 N, m= 0.2 kg. The overshoot is reduced by 70.4% and the adjustment time is reduced by 81.6% after optimization. This study analyzes the influence of spool component parameters on dynamic characteristics of positive reducing valve and provides guidance for its design.

Presenting Author: Zhao-Nian Zhou Zhejiang University

Presenting Author Biography: