METHOD FOR MEASURING VOLUME, MASS, VOLUME AND MASS FLOW OF LIQUID AND GAS AND PISTON FLOW METER FOR ITS IMPLEMENTATION Russian patent published in 2023 - IPC G01F3/16 

FIELD: measuring equipment.

SUBSTANCE: invention relates to a method and device for measuring volume and volumetric flow of liquids and gases. A piston flow meter-meter for volume, mass, volumetric and mass flow of liquid and gas contains a pair of cylinders and pistons mounted in them with the possibility of rectilinear movement, lines for inlet into the cylinders and outlet of liquid or gas from them, equipped with valves. The cylinders are placed oppositely with the possibility of rectilinear movement of pistons in them, the rods of which are connected to each other. The cylinders are made of equal diameter with the possibility of forming working volumes of equal size in them, each of the pistons is connected by a flexible transmission to the rotation angle sensor shaft with the possibility of transmitting the movement of the pistons to the sensor shaft and causing it to rotate, the intake and exhaust lines are connected parallel to the cylinders and to the input and the output of the flow meter, respectively. Bypass valves are mounted in the lines at the inlet and outlet of each cylinder, designed to allow simultaneous supply of liquid or gas to one cylinder and outlet from the second; the pistons are equipped with end position sensors.

EFFECT: possibility of creating a method and a piston device for measuring volume, mass, volumetric and mass flow of liquid or gas supplied in a continuous flow, and measuring them with high accuracy.

12 cl, 2 dwg