Method of and device for avoiding rotor instability to enhance d

Details Method of and device for avoiding rotor instability to enhance d Method of and device for avoiding rotor instability to enhance d

1978-11-02

1983-01-25

Powell, Jr., Everette A.

Rotary kinetic fluid motors or pumps

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

Means to seal radial flow pump runner inlet from outlet

415119, F01D 520

Patent

active

043700942

ABSTRACT:
A method of and device for avoiding rotor instability thereby increasing the dynamic power limit of rotary fluid machines such as turbines and compressors which have contact free seals in the gaps between the rotating and nonrotating elements of the machine in which the rotary flow of fluid in the gap is modified as by axial baffles in the gap or by introducing a fluid medium into the gap thereby to decrease, eliminate, or even reverse the force component acting on the rotating element and disposed 90.degree. ahead of the oscillation deflection of the rotating element.

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patent: 3876330 (1975-04-01), Pearson et al.
patent: 3885886 (1975-05-01), Richter
patent: 4273510 (1981-06-01), Ambrosch et al.

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