DEVICE FOR MEASURING FLUID FLOW Russian patent published in 2017 - IPC G01F1/36 

FIELD: measuring equipment.

SUBSTANCE: device for measuring fluid flow comprises a measuring section designed as a tubular body built into the conduit with an inlet cylindrical section and an outlet cylindrical section, the inner diameters of which are equal to the inner conduit diameter, and located between the inlet cylindrical section and the outlet cylindrical section of the tubular body, wherein there are holes with the first and the second fittings in the cross sections of the tubular body to connect the pressure measuring means, the inner diameter of the measuring section is made variable with a gradual increase in diameter from the inlet cylindrical section toward the outlet cylindrical section followed by a gradual decrease toward the outlet cylindrical section, the transition from the gradual increase of the inner measuring section diameter to the gradual decrease of its inner diameter is made arcuate in the cross section, the hole with the first fitting for connecting the pressure measuring means is made in the tubular body immediately before the maximum inner diameter of the measuring section, and the hole with the second fitting for connecting the measuring pressure means is made in the tubular body at the end of the measuring section.

EFFECT: improving the accuracy of the flow measurement.

4 cl, 1 dwg