| 摘要 |
FIELD: instrumentation engineering. SUBSTANCE: turbine converter of flow rate is means to measure rate of flow of liquids and gases in closed pressure pipe-lines. It has case with cylindrical flow chamber which houses nozzle, small turbine balanced hydrodynamically and coaxial to flow chamber, limiter, unit picking off rotational speed of small turbine. Duct of nozzle is made in the form of cylindrical hole which diameter is lesser on side of inlet of measured medium than on side of outlet. Transition from lesser diameter to bigger one is manufactured in the form of hemisphere. Nozzle is so mounted that there is formed flow duct between case and nozzle. Surface of turbine fairing on side of measured medium is fabricated in the form of hemisphere transiting into cylinder of lesser diameter which carries turbine blades. Stabilizing ring can be put on blades of turbine. EFFECT: reduced hydraulic losses and dimensions, expanded measurement range. |
