诱导轮先进设计

诱导轮先进设计

State-of-the-Art Inducers Specially developed with high speed inducer technology from the aerospace industry, the inducers allow the pumps to reduce liquid levels to extremely low levels. For pumps operating in liquefied gases, where pressures and temperatures of the pumped fluid are sometimes near their boiling point, the use of inducers in the pump inlet is necessary to ensure adequate NPSHR or Net Positive Suction Head Required, is supplied to the main centrifugal impellers. Nikkiso Cryo uses low solidity fan-type inducers as well as high solidity spiral-type inducers depending on the application. These inducers with high suction specific speeds, provide excellent low suction pressure performance over a wide flow range. For applications which require tank levels to be minimized as much as possible, Nikkiso Cryo has developed a spiral inducer with very high suction specific speeds. Our ZENZero Enabled NPSHInducer was specially developed based on high speed inducer technology from the aerospace industry to allow the pumps to reduce liquid levels to extremely low levels, which maximizes usable tank volume. 0.600 0.550 0.500 0.450 0.400 0.350 0.300 0.250 NPSHR [m] 0.200 0.150 0.100 0.050 0.000 NPSH 60.0 50.0 400 30.0 Inducer head [m] X 200 10.0 0.0 T T 1000 200.0 Inducer Head 300.0 4000 500.0 [oJ Gl 汪 600.0 7000 800.0 Flow [ms/h] -=-- Rated Capacity -=-- 110% Capacity - 0.0 900.0 1000.0 --- 80% Capacity