Method for calculating the opening height of a valve disc of a breather valve

Abstract

The application discloses a kind of calculation methods of breathing valve disc opening height, it is related to breathing valve control method technical field.The calculation method includes by critical flow / choke flow calculation formula, obtain the relationship between flow and the pressure of valve disc, the opening height of valve disc, obtain flow calculation formula;By flow test equipment, obtain the data of flow of breathing valve under different pressures, and the obtained data is fitted by non-constant polynomial function, obtain suitable fitting function;The derivative of fitting function is obtained, and the pressure at critical height is obtained;By fitting function, flow calculation formula and the pressure at critical height, obtain the opening height calculation formula of valve disc.Invention can only rely on intake pressure to obtain the opening height of breathing valve disc, without setting sensor in breathing valve to measure, not only can reduce the failure point, reduce maintenance cost, but also can effectively improve the accuracy of measurement data.

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