Rotary kinetic fluid motors or pumps – With means for re-entry of working fluid to blade set – Re-entry working fluid joins inlet working fluid upstream of...
Patent
1991-12-27
1993-08-03
Denion, Thomas E.
Rotary kinetic fluid motors or pumps
With means for re-entry of working fluid to blade set
Re-entry working fluid joins inlet working fluid upstream of...
415 587, 415111, 415 66, 415 68, 415 69, 415143, F01D 112
Patent
active
052323331
ABSTRACT:
Inside a single casing the turbopump comprises a main shaft driven by a turbine, a secondary shaft coaxial with the main shaft, a low pressure impeller mounted on the secondary shaft to create a medium pressure flow which is brought back to flow parallel to the axis of the turbopump by a baffle and which is deflected through 180.degree. in a return channel so as to come back parallel to the axis of the turbopump towards a high pressure impeller mounted on the main shaft inside the secondary shaft. The entire HP flow formed by the HP impeller is output via the insides of curved hollow blades forming a portion of the LP impeller, this HP centrifugal flow thus establishes a driving torque for the LP impeller.
REFERENCES:
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patent: 2771036 (1956-11-01), Baez
patent: 2832292 (1958-04-01), Edwards
patent: 3004494 (1961-10-01), Corbett
patent: 3093084 (1963-06-01), Derderian
patent: 3103176 (1963-09-01), Lang et al.
patent: 4400134 (1983-08-01), Sweeny
patent: 4408953 (1983-10-01), Nasvytis et al.
patent: 4449888 (1984-05-01), Balje
"Better Power/Speed Cavitation for Centrifugal Pumps", O. V. Baibakov, et al., Russian Engineering Journal, vol. 53, No. 11, pp. 31-35.
Denion Thomas E.
Societe Europeenne de Propulsion
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