Clutch connected multi-stage impeller pump

Details Clutch connected multi-stage impeller pump Clutch connected multi-stage impeller pump

F - Mech Eng,Light,Heat,Weapons

04

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103/116, 103/22

F04D 1/08 (2006.01) F04D 13/02 (2006.01) F04D 13/14 (2006.01) F04D 15/00 (2006.01)

Patent

CA 1073743

ABSTRACT OF THE DISCLOSURE A boost pump incorporates a low-flow impeller pump for charging the inlet of a gas producer fuel pump and a high-flow impeller pump for charging the inlet of an augmentor fuel pump. The low-flow pump is connected to a drive shaft so as to be continuously driven thereby. The drive shaft may be placed in driving connection with the high-flow pump through the medium of a friction clutch which is engageable by the application of a fluid pressure. Disengagement of the high-flow impeller, when augmentation is not required, significantly contributes to an increase in pump efficiency and a reduction in heating of the fluid being pumped.

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