სმარტ ტიპის ტურბინის ნაკადის ხარჯსაზომი

Abstract

Turbine flowmeter, designed for “smart” measurement of the flow rate of the liquid entering it and recovery of the pressure (head) of the liquid flowing out of it; the liquid flowing into it is converted by the conversion unit into a spiral-pulsating flow, which hits the turbine and forces it to rotate impulsively with a frequency proportional to the speed of the liquid flow; the spiral-pulsating flow exiting the turbine is first narrowed and then expanded by means of convergent (narrowing) and divergent (expanding) nozzles; the expanded spiral-pulsating flow is pumped by a screw-type pump and converted by an axial converter into an axial-pulsating flow, which is collected in the liquid pressure recovery chamber; In this chamber, hydraulic shocks (pressure surges) caused by the axial-pulsating flow hitting the accumulated liquid are used to restore the liquid pressure, after which the liquid leaves the turbine flowmeter;The fluid flow rate is measured by a “smart” measuring node in which a hermetic measuring rotor (containing circumferentially arranged induction coils without a collar) rotates synchronously between the magnetic stators of the turbine; the stators are equipped with circumferentially arranged magnets that create alternating magnetic fluxes; when these fluxes are crossed by the induction coils, electrical signals are induced, by measuring which data related to the fluid flow rate are calculated; data reading is provided using optical signals similar to Morse code; the magnetic stators and the hermetic measuring rotor are located in a narrow section (throat) between the convergent and divergent nozzles, in the flow path of the measuring fluid. Thus, the overall design of the device is characterized by improved accuracy, a “smart” and secure metrological system, a fluid pressure recovery function, and a simple structure.