Full-arc admission steam turbine

Details Full-arc admission steam turbine Full-arc admission steam turbine

1990-12-20

1991-12-31

Look, Edward K.

Rotary kinetic fluid motors or pumps

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

By shaft speed or torque responsive means

415 39, 415 45, F01D 1700

Patent

active

050767569

ABSTRACT:
The present invention relates to an full-arc admission steam turbine having its output controlled by regulating the opening of a steam regulating valve. The full-arc admission steam turbine is run at a higher efficiency than that of the full-arc admission steam turbine of the prior art by improving the drop in the internal efficiency of the turbine due to the throttle loss of the valve. Moreover, a substantially constant high efficiency is maintained for the time period from the designed point of a partial load to the rated load if the second blade stage group is selected to provide an internal efficiency substantially equal to that of the blade stage group of the prior art.

REFERENCES:
patent: 769300 (1904-09-01), Brown
patent: 818008 (1906-04-01), Wilkinson
patent: 1399215 (1921-12-01), Kerr
patent: 2718349 (1955-09-01), Wilde
patent: 2728518 (1955-12-01), Wilde et al.
patent: 2863288 (1958-12-01), Martin
patent: 4325670 (1982-04-01), Silvestri, Jr.
patent: 4604028 (1986-08-01), Yeaple et al.

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