Power plants – Motive fluid energized by externally applied heat – Having condition responsive control
Patent
1976-12-09
1978-10-10
Ostrager, Allen M.
Power plants
Motive fluid energized by externally applied heat
Having condition responsive control
60652, 60677, 290 40R, 415 36, 415 39, F01K 706
Patent
active
041189353
ABSTRACT:
A regulation system for a steam turbine installation comprising a steam generator and a multi-stage turbine installation incorporating a high-pressure stage. The regulation system comprises a regulation valve arranged between the steam generator and the high-pressure stage of the turbine installation and a by-pass valve connected in parallel with said high-pressure stage, as well as control devices with associated control circuits for said valves. The control device for the by-pass valve is influenced by the signal from the control circuit of the regulation valve such that when the opening of the regulation valve exceeds a predetermined magnitude the control device for the by-pass valve opens such by-pass valve to a predetermined magnitude. Further, the control circuit of the by-pass valve is connected in parallel with a differentiation element which influences the degree of opening of the by-pass valve as a function of variations in the signal received from the control circuit of the regulation valve.
REFERENCES:
patent: 2197651 (1940-05-01), Rosch
patent: 3055181 (1962-09-01), Argersinger et al.
BBC Aktiengesellschaft Brown, Boveri & Cie
Husar Stephen F.
Kleeman Werner W.
Ostrager Allen M.
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