The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 1978
Filed:
Oct. 19, 1976
Applicant:
Inventors:
Hiroshi Matsumoto, Ibaraki, JP;
Yoshiyuki Nakano, Ibaraki, JP;
Toshihiko Higashi, Ibaraki, JP;
Akihiro Yasumoto, Ibaraki, JP;
Assignee:
Hitachi, Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F22D / ;
U.S. Cl.
CPC ...
60667 ; 415 17 ; 290 / ; 364494 ;
Abstract
In a steam turbine-generator with means for determining a load demand signal in accordance with a load reference signal, means for determining the valve opening under each admission mode of full-arc and partial-arc in accordance with said load demand signal and means for adjusting the ratio between valve openings under the each admission mode in accordance with a load change the ratio of steam flow under each of the admission modes is controlled in accordance with a load change so as to minimize the thermal stresses and thereby reduce the turbine load changing time.