Rotary kinetic fluid motors or pumps – With control means responsive to non-cyclic condition... – By shaft speed or torque responsive means
Patent
1980-10-27
1983-01-11
Coe, Philip R.
Rotary kinetic fluid motors or pumps
With control means responsive to non-cyclic condition...
By shaft speed or torque responsive means
415 36, 137 53, F01B 1706
Patent
active
043680046
ABSTRACT:
An apparatus for preventing a turbine from exceeding a predetermined value of a monitored physical magnitude, the apparatus including an over-center toggle lever (3) pivotally mounted on a pivot point (6) on a stationary frame (7), the lever being capable of occupying a tripped position or a released position. In the cocked position, one arm (4) of the lever (3) presses against a stop (8) provided with a unit (20) which controls steam admission units to the turbine, the lever (3) moves away from the stop, steam is cut off, while the end (14) of the other arm (5) is pivotally mounted on the end of a connecting rod (10) which is pivotally mounted at its other end on a pin (11) which is integral with a piston (12) which a spring (16) pushes away. A mass (2) strikes the lever (3) which moves to the tripped position if the monitored magnitude exceeds the predetermined value. Due to the fact that the frame (7) and apparatus assembly is resilient, the lever can be tripped even if the piston (12) seizes in the associated cylinder (15). The apparatus of the invention is a high-security apparatus.
REFERENCES:
patent: 2675987 (1954-04-01), Gleason et al.
patent: 2756810 (1956-07-01), Simmons
patent: 2946189 (1960-07-01), Basford
patent: 3139166 (1964-06-01), Berlyn
Coe Philip R.
Societe Anonyme dite: Alsthom-Atlantique
Stinson Frankie L.
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