METHOD AND DEVICE FOR MEASURING FLOW RATE IN FLUID MEDIUM DISTRIBUTION SYSTEM HAVING SEVERAL VALVE UNITS OF FLUID MEDIUM Russian patent published in 2020 - IPC G01F1/34 

FIELD: measurement.

SUBSTANCE: disclosed is a method and an apparatus for measuring fluid flow rate in a fluid distribution system, which comprises centrally located fluid medium source (LS), connected by means of separate supply pipelines (FC1, FC2, and so forth) to several crane units (LT1, LT2, and so forth) of fluid medium, each of which has at least one fluid valve. Method comprises steps of providing, for each said separate supply pipeline (FC1, FC2, and so forth), first fluid pressure sensor (PS1, PS2, and so forth) located at any point along said separate supply conduit or in appropriate crane assembly (LT1, LT2, and so forth) of fluid, and a second fluid pressure sensor (PS') serving as a reference pressure sensor common for all said supply conduits and adjacent to said centrally located fluid source (LS). Each of first and second sensors (PS1, PS2 and so forth, and PS') of fluid medium pressure is connected to control unit (CU) configured to determine fluid pressure at first and second fluid pressure sensors, including the difference between said two fluid medium pressures, and based on said determination of said fluid pressures and said pressure difference, calculate fluid flow rate through each separate supply pipeline (FC1, FC2, and so forth), at least in the presence of fluid flow in said inlet (IN1, IN2, and so forth) to any crane assembly (LT1, LT2 and so forth) of fluid medium.

EFFECT: method and apparatus for measuring fluid flow rate for measuring fluid flow in a fluid distribution system of said type using very simple means and without using, during normal operation, flow meters located adjacent to inlet of fluid medium on each separate valve unit of fluid medium.

15 cl, 8 dwg