诱导轮先进设计
State-of-the-Art InducersSpecially developed with high speed inducer technology from theaerospace industry, the inducers allow the pumps to reduce liquidlevels to extremely low levels.For pumps operating in liquefied gases, where pressures andtemperatures of the pumped fluid are sometimes near their boilingpoint, the use of inducers in the pump inlet is necessary to ensureadequate NPSHR or Net Positive Suction Head Required, is supplied tothe main centrifugal impellers. Nikkiso Cryo uses low solidity fan-typeinducers as well as high solidity spiral-type inducers depending on theapplication. These inducers with high suction specific speeds, provideexcellent low suction pressure performance over a wide flow range.For applications which require tank levels to be minimized as much aspossible, Nikkiso Cryo has developed a spiral inducer with very highsuction specific speeds. Our ZEN—Zero Enabled NPSH—Inducer wasspecially developed based on high speed inducer technology fromthe aerospace industry to allow the pumps to reduce liquid levels toextremely low levels, which maximizes usable tank volume.0.6000.5500.5000.4500.4000.3500.3000.250NPSHR [m]0.2000.1500.1000.0500.000¢ NPSH60.0 50.0 400 30.0 Inducer head [m] X20010.0 0.0 T T1000 200.0® Inducer Head300.0 4000 500.0[oJ Gl 汪600.0 7000 800.0Flow [ms/h]-=-- Rated Capacity-=-- 110% Capacity- 0.0900.0 1000.0--- 80% Capacity