Effects of Diaphragm Compliance on Spring-Diaphragm Pressure Regulator Dynamics

Author:

Hubbard Mont1

Affiliation:

1. Department of Mechanical and Aeronautical Engineering, University of California, Davis, CA 95616

Abstract

A dynamical model is derived for a spring-diaphragm type automotive pressure regulator containing an annular membrane. Previous studies have generally assumed that the diaphragm was of constant area and that it remained flat. Central features of the model presented are the calculation of the deformed shape of the annular diaphragm and the effects of its resulting fluid compliance and force on the drain orifice cover plate. Elasticity theory is used to derive the diaphragm two-port compliance relation that is integrated into an overall regulator dynamic model. Effects of diaphragm elastic modulus on system dynamic response are studied. The model and its results may be used in other design parameter studies and as a component of a fueling system dynamic model.

Publisher

ASME International

Subject

Computer Science Applications,Mechanical Engineering,Instrumentation,Information Systems,Control and Systems Engineering

Reference15 articles.

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2. Parker, G. A., and White, D. E., 1977, “Modeling the steady-state characteristics of a single-stage pneumatic pressure regulator,” Fluidics Quarterly, 9(2), pp. 23–45.

3. Tsai, D. H., and Cassidy, D. E., 1961, “Dynamic behavior of a simple pneumatic pressure reducer,” ASME J. Basic Eng., 83, pp. 253–264.

4. Tatnall, M. L., and Redpath, A., 1978, “Dynamic modeling of a gas pressure regulator for low pressure service,” Meas. Control, 11(4), pp. 147–153.

5. Lee, W. F. Z., Bonner, J. A., and Leonard, R. G., 1974, “Dynamic analysis and simulation of a gas regulator,” Flow: Its Measurement and Control in Science and Industry, V. 1, Part 3, pp. 1135–1148, Instrument of Society of America, Pittsburgh, PA.

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