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:
Feb. 12, 1985
Filed:
Feb. 16, 1983
Applicant:
Inventor:
Kuniyoshi Tsubouchi, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01K / ;
U.S. Cl.
CPC ...
60657 ; 60678 ; 415175 ;
Abstract
A cooling device for a steam turbine wherein a portion of boiler feedwater for cooling a casing of the turbine is supplied, after being heated by high pressure feedwater heaters, to a cooling fluid passage for the casing as a cooling fluid satisfying the temperature and pressure conditions necessary for effecting cooling of the casing, by a booster pump and a regenerating heat exchanger. After cooling the casing, the cooling fluid is returned to a boiler feedwater system following a heat exchange with a cooling fluid for cooling the casing.