Condensate pump NPSHr is smaller than normal water pump. Mainly used for power plant condensate, and can also be used in other occasions of suction is cavitation state. Conveying liquid temperature is less than 80ºC.N type pump is also used in coal-fired power plants conveying water, low-pressure heater transfer medium temperature below 105ºC.
N type pump is cantilever single-stage,two stages horizontal centrifugal pump, suction inlet in the axial direction, discharge inlet in the vertical direction. In order to get low NPSHr, 6N6,200N65,200N150,200N135 pumps with idler.
N type pump rotor support for rolling bearing, and thin oil lubrication;
From the motor direction, N type pump is counter-clockwise;
8NL-12 type pump is vertical,middle split,idler,single stage condensate pump.
14NL-14 type pump is vertical,middle split,idler,two stages condensate pump.
casing: /cast iron/ carbon steel;
impeller: stainless steel;
idler: stainless steel;
Condensate pump structure chart:
(1) single stage,horizontal structure
(2)Two stages horizontal structure
(3)Single stage,with idler type structure
|102||pump cover||203||the first impeller|
|121||pump casing sealing ring||211||shaft sleeve|
|201||pump shaft||307||bearing integration|