Inducer equipment for a pump having large induction capacity

Details Inducer equipment for a pump having large induction capacity Inducer equipment for a pump having large induction capacity

1998-07-02

2000-05-23

Look, Edward K.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between blade edge and static part

415222, 415223, F04D 1312

Patent

active

060659297

ABSTRACT:
Inducer equipment adapted to a pump having large induction capacity which cludes a case surrounding an inducer rotor having a plurality of blades leaving clearance relative to the case. The clearance between the peripheral portions of the blades and the case is of an increased value greater than the value of the normal clearance over a zone which extends both into a cylindrical first portion of the inside wall of the case upstream from the inducer rotor and into a portion of the inside wall of the case adjacent to the cylindrical first portion and overlapping an upstream portion of the inducer rotor over a distance from the leading edges of the blades of the inducer rotor. The ratio between the clearance of increased value and the clearance of normal value is advantageously greater than 10.

REFERENCES:
patent: 4375937 (1983-03-01), Cooper
patent: 4426190 (1984-01-01), Shapiro et al.
patent: 4721435 (1988-01-01), Kuah
patent: 4900222 (1990-02-01), Meng et al.
"Hydraulic and Mechanical Performance of LE-7 and LOX Pump Inducer" Journal of Propulsion and Power, vol. 9, No. 6, Nov.-Dec. 1993.

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