FLOW CONDITIONING FOR FLUID FLOW MEASUREMENT Class # 1330.1

摘要

Some excerpts and graphics of this paper have been previously presented at the American Gas Association Operations Conference,Orlando Florida 2000,and the paper itself at The International School of Hydrocarbon Measurement,2018 Oklahoma City,Oklahoma.The American Gas Association(AGA) and the American Petroleum Institute(API) provide metering guidelines for orifice,ultrasonic,turbine,and other gas and liquid phase meters.In all of the metering recommendations,flow conditioning(FC) devices are recommended for a meter run.The function of the FC is to prepare the pipe flow to allow the flow meter to work as intended.Fundamentally,the function of a FC is to minimize metering facility life cycle costs:capital,operating,error costs.This is why FC's are always a popular topic of discussion,they establish those capital and operating costs for the metering facility right from the meter station design stage.Not all FC's are created equal and measurement error due to a poor design or installation could even be an additional unforeseen measurement error legal cost not included in this analysis.Let us begin by describing what a flow conditioner is and why it is designed the way it is.The Flow Conditioner(FC) effectiveness can be severely reduced by"loading"the FC with fluid dynamic effects caused by poor meter station pipe design.This is caused by improper meter run distance and fitting choice or specification.