METHOD OF MEASUREMENT OF VELOCITIES OF FLOWS OF COMPONENTS OF TWO-PHASE OR THREE-PHASE FLUID MEDIUM AND GEAR TO IMPLEMENT IT

摘要

FIELD: measurement technology. SUBSTANCE: invention refers to equipment measuring velocities of flows of gaseous and liquid components of two-phase or three-phase medium. Gear to measure velocities of flows of each component of two-phase flow composed of gas and liquid or three-phase flow composed of water, oil and gas includes first stage of volumetric flowmeter and second and third stages of pulse flowmeter connected in series downstream flow and to stage of volumetric flowmeter in which ratio of velocities between gas and liquid is kept equal to one downstream flow. Processor calculates velocities of components of flow by solving equation of volumetric flow and maintaining momentum and quantity of energy determining flow through first-third stages. In this case velocities of components of flow are found with the use of output signal of volumetric flow from first stage and output signals of flow of momentum from mentioned second and third stages and indicator displays flow of components of liquid and gas or oil, water and gas. Meter of water fraction is used in measurement of three-phase flow to determine value of water flow which is used in processor to determine flow of remaining liquid. Second and third stages of pulse flowmeters can be realized with the help of two individual pulse flowmeters or with the help of one pulse flowmeter such as Venturi meter having points for pressure tap to obtain at least two measurements of pressure differential. If density of liquid component is known it will be sufficient to have only one stage of pulse flowmeter. EFFECT: enhanced authenticity of method and gear. 15 cl, 5 dwg