Inducer for NSLV
Subject:
DESMI NSLV plus inducer pump can effectively reduce customer initial purchase cost and increase pumping system reliability through improved suction performance.
–DESMI end suction centrifugal pump NSLV plus inducer is a natural choice for low NPSH requirement application.
1. What is inducer and its function?
An Inducer is an axial flow impeller with blades that wrap in a helix around a central hub. An Inducer serves as a small booster pump for the main impeller. The inducer imparts sufficient head to the liquid so that the NPSH requirement of the adjacent main impeller is satised, thus elimination of significant cavitation in following pump stage is achieced. A cavitation during pumping operation will result serious noise, vibration, material erosion, performance degradation as well as other mechanical problems that shorten pump service life strikingly. – “Inducer for centrifugal pumps” on www.kelairpumps.com.au and “Pump Inducer” in Wikipedia is cited.
2. When induc-er is required to build in pump?
While the pump suction pressure approaches vapor pressure of the pumped liquid, inducer is one of the enective low cost solution to avoid cavitation occurrence. In other word, pump NIPSHr value will decline in portion if an inducer installed inside pump. Consequently pump higher suction performance requirement willl be fulfilled.
3. Why DESMI develop Inducer?
In recent marine and offshore building specification, low NPSHr vallue centrifogall pump is required frequently in engine room application, hull part application and other fields. In case of that, add Inducer inside pump is a low cost and reliable alternative solution to reduce NPSHr value without pump overall dimension change.
4. What kind pump type will build in inducer and when will it be ready for sale?
Up to now only NSLV pump is in program to have inducer build-in. NSLV is end suction type vertical installation pump that means axial inlet on pump body bottom, outlet in radial direction.
