VELOCITY FLOW METER (VARIANTS)

摘要

The present velocity flow meter comprises a flow housing with a central axial channel and a co-axial annular measuring channel, and a unit for monitoring the rotation of a sensitive element. Inside the measuring channel, an inlet guide vane assembly and an outlet guide vane assembly are disposed, being in the form of hubs with vanes, between which an annular groove is provided for rotation of the sensitive element. The inlet guide vane assembly has straight radial vanes which transition in the direction of the flow into helical vanes, and the outlet guide vane assembly has helical vanes at the entry point which transition in the direction of the flow into straight radial vanes. The annular groove is delimited in the radial direction by the inside wall of the housing and by the outside wall of a hub, and in the axial direction by limiting rings which are mounted on adjacent ends of the inlet guide vane assembly and the outlet guide vane assembly. The technical result is an increase in the accuracy with which the flow of fluids of varying density and viscosity is measured in a wide range of deliveries.