Combined boiler feed and condensate pump

Details Combined boiler feed and condensate pump Combined boiler feed and condensate pump

F - Mech Eng,Light,Heat,Weapons

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F22D 11/06 (2006.01) F04D 1/06 (2006.01) F04D 5/00 (2006.01) F04D 13/06 (2006.01) F04D 29/04 (2006.01) F04D 29/22 (2006.01) F22D 11/02 (2006.01)

Patent

CA 2085560

Docket No. 1083-IR-CA ABSTRACT OF THE DISCLOSURE A boiler feed pump including an elongate casing adapted to be interconnected in a pipeline and a variable speed electrical motor driving an axially extending shaft, which drives a conden- sate inducer pump and a multiple stage centrifugal pump, all of which are housed within the casing. The inducer pump comprises a series of axially spaced rotating annular disks which the con- densate flows between. The centrifugal pump receives the conden- sate from the inducer pump and pumps it to a higher pressure suitable for feeding a boiler. The motor can operate at a vari- able speed to handle various flow demands. The motor also serves as a thrust balancing device for the multiple stage centrifugal pump. -16-

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