Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Patent
1986-01-21
1987-04-07
Tokar, Michael J.
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
340588, F01K 2100
Patent
active
046550410
ABSTRACT:
A method and apparatus for protecting a turbine from undesirable temperature and pressure variations wherein an acceptable range of actual pressure and temperature variations is established, a first alarm signal is generated only if the acceptable range is exceeded by actual temperature or pressure, a second signal is established representing an acceptable rate of change of said actual pressure or temperature and a second alarm is generated if the actual rate of change of pressure or temperature exceeds the acceptable range of pressure or temperature whereby the second alarm signal is produced only when the first alarm signal is generated. In addition, a third signal is established representing a maximum rate of change of pressure and a third alarm signal is generated if the actual rate of change of pressure or temperature exceeds the maximum rate of change of pressure or temperature whereby the third alarm signal is produced only when the first alarm signal is generated.
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Del Vecchio Richard J.
Gram James A.
Dresser Industries Inc.
Raevis Robert R.
Tokar Michael J.
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