Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Patent
1992-04-15
1993-04-13
Ostrager, Allen M.
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
60657, 60667, F01K 1300
Patent
active
052011801
ABSTRACT:
A method for monitoring the operating condition of a steam turbine, to which an adjustable inlet steam quantity can be supplied and from which a variable, partially expanded steam quantity can be extracted, includes initially ascertaining a relative inlet steam quantity for an adjustable inlet steam quantity as a percentage value, and ascertaining a relative turbine power from the relative inlet steam quantity as a percentage value; and determining an applicable operating point from the relative inlet steam quantity and the relative turbine power, and subsequently displaying the applicable operating point inside a performance graph for various extraction steam quantities. An apparatus for monitoring the operating condition of the steam turbine includes a final control element for adjusting the inlet steam quantity, a first device connected to the final control element for converting a position signal of the final control element into a percentage value of the corresponding inlet steam quantity, a second device connected to the first device for converting the percentage value of the inlet steam quantity into a percentage value of the turbine power, and a display device connected to the first and second devices. The display device has a screen on which a particular operating point determined by the relative inlet steam quantity and the relative turbine power can be displayed in a performance graph for various extraction steam quantities.
REFERENCES:
patent: 4355514 (1982-10-01), Reifenberg
patent: 4866940 (1989-09-01), Hwang et al.
Greenberg Laurence A.
Lerner Herbert L.
Ostrager Allen M.
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