Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Patent
1985-07-12
1987-01-20
Rosenthal, Arnold
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
251 3001, 415 17, F16K 3102, F01B 2516, F01D 2100
Patent
active
046375872
ABSTRACT:
An apparatus for the monitoring of physical quantities on systems for example for driving a quick-closing valve in turbines, wherein the monitoring itself is performed by monitoring channels which are interconnected in a majority-determining switching logic, primarily 2 of 3 system. The monitoring channels (I, II, III) are formed by a system-dependent number of identical solenoid valves (1, 2, 3).
REFERENCES:
patent: 4007906 (1977-02-01), Karpenko
BBC Brown Boveri & Company Limited
Rosenthal Arnold
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