Active automatic clamping control

Details Active automatic clamping control Active automatic clamping control

1996-10-11

1998-06-23

Kwon, John T.

Rotary kinetic fluid motors or pumps

With control means responsive to non-cyclic condition...

Responsive to moving member developed fluid force, current...

415164, F01D 1716

Patent

active

057696020

ABSTRACT:
An automatic control of clamping forces in primary nozzle systems of radial turbines. Pressure to an closed annular volume positioned between a turbine housing and an axially adjustable mounting ring is varied to regulate the clamping forces against inlet vanes which form primary nozzles. A controller compares process control data with a signal indicative of operational deviation from nominal operation as indicated by the process control signal to detect onset of excessive blow-by, in which case pressure is increased in the closed annular volume to move the mounting rings closer together. The controller also compares expected and actual system data to detect onset of excessive clamping, in which case pressure is increased in the closed annular volume to increase clamping forces.

REFERENCES:
patent: 2341974 (1944-02-01), Browne
patent: 2976013 (1961-03-01), Hunter
patent: 3033519 (1962-05-01), Radtke
patent: 3495921 (1970-02-01), Swearingen
patent: 4242040 (1980-12-01), Swearingen
patent: 4300869 (1981-11-01), Swearingen
patent: 4502836 (1985-03-01), Swearingen
patent: 5564895 (1996-10-01), Agahi et al.

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