Boots – shoes – and leggings
Patent
1979-03-16
1981-09-22
Wise, Edward J.
Boots, shoes, and leggings
F01D 1900, F01D 1700
Patent
active
042913780
ABSTRACT:
A steam turbine plant is disclosed having at least one turbine intake valve and at least one by-pass valve, which valves are connected with a live-steam generator by way of a live-steam supply system. A regulating circuit is provided to control the opening or respectively closing motion of the turbine intake valve and/or the by-pass valve, where the regulating circuit is designed in such manner that it will supply each valve with one electrical regulating value (x.sub.1, x.sub.2) which will act upon the respective controlled system. The electrical regulating value is provided so as to attain a specific steam flow-through (Q.sub.1, Q.sub.2), representing the controlled variable. The controlled systems each comprise a valve to be regulated. The controlled systems differ from each other in particular features in that there is placed within the controlled system containing the turbine intake valve and/or the by-pass valve at least one correction element which possesses such transfer function that the transfer functions of both controlled systems will be, at least in approximation, identical with each other.
REFERENCES:
patent: 3348559 (1967-10-01), Brothman et al.
patent: 3552872 (1971-01-01), Giras et al.
patent: 3561216 (1971-02-01), Moore, Jr.
patent: 4005581 (1977-02-01), Aanstad
patent: 4007595 (1977-02-01), Braytenbah et al.
patent: 4007597 (1977-02-01), Jaegtnes et al.
patent: 4028532 (1977-06-01), Reuther
patent: 4088875 (1978-05-01), Prodolsky et al.
BBC Brown Boveri & Co. Ltd.
Wise Edward J.
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