Визначення відносного діаметра діафрагми оптимальної за точністю вимірювання витрати природного газу

Abstract

The national literature review showed that the mathematical model for the relative standard diameter of narrowing device calculating because of the introduction of new national standards should be clarified. The components of flowrate measurement error, directly dependent on the design parameters of the standard narrowing devices are found. The optimality criterion for calculating of the structural parameters of the standard narrowing devices for optimal precision flow measurement of natural gas is proved in this paper. An algorithm of calculating of the structural parameters of the standard narrowing devices of differential pressure flowmeter for natural gas measurement, that enhances the accuracy of flowrate measurement by reducing of systematic errors that depend on the design parameters of the standard narrowing devices, was made as well.