Rotary kinetic fluid motors or pumps – Method of operation
Patent
1984-07-02
1987-02-17
Powell, Jr., Everette A.
Rotary kinetic fluid motors or pumps
Method of operation
415 62, 415143, 415157, F04D 1500
Patent
active
046436359
ABSTRACT:
A vapor core centrifugal fuel pumping system (10') has a main flow impeller (72) and a low flow impeller (81) mounted upon the front plate (74) of the main flow impeller. Both of the impellers receive flow from an inlet passage (26') which proceeds past an inlet throttling valve (114). During pumping operation of the low flow impeller, a surface (122) on the inlet throttling valve forms a labyrinth seal with the radially inner lip (120) of the front plate to reduce inlet fuel flow entering the main impeller. A first check valve (124) and a second check valve (126) respectively prevent flow from the low flow impeller from entering the main flow impeller and flow from the main impeller from entering the low flow impeller. The second check valve is associated with conduits (140, 142) to evaculate liquid adjacent the main impeller during operation of the low flow impeller to reduce windage losses. The pumping system does not engender excessive pressure or flow transients during changeover between low flow operation and normal flow operation. Also, the pumping system imparts minimal temperature rise to the fuel being pumped and is not susceptible to significant cavitation erosion.
REFERENCES:
patent: 2210155 (1940-08-01), Szydlowski et al.
patent: 2342219 (1944-02-01), Price
patent: 3005311 (1961-10-01), Ross
patent: 3106165 (1963-10-01), Tyler
patent: 3142259 (1964-07-01), Tyler
patent: 3204863 (1965-09-01), Hausammann
patent: 3408943 (1968-11-01), Rimmer
patent: 3426964 (1969-02-01), Silvern
patent: 3482523 (1969-12-01), Morando
patent: 3504986 (1970-04-01), Jackson
patent: 3576375 (1971-04-01), Jackson
patent: 3624704 (1971-11-01), Leonard
patent: 3658440 (1972-04-01), Jackson
patent: 3671136 (1972-06-01), O'Mara et al.
patent: 4408953 (1983-10-01), Nasvytis et al.
patent: 4487548 (1984-12-01), Leachman et al.
Chandler Evans Inc.
Dornon Richard A.
Powell Jr. Everette A.
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