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:
May. 17, 1988
Filed:
Mar. 02, 1987
Tsuguo Hashimoto, Hitachi, JP;
Taiji Inui, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A thermal power plant includes a main system in which steam generated in a boiler passes, through a steam regulating valve, a high pressure turbine, a reheater and an intercept valve, into an intermediate pressure turbine and a low pressure turbine. The thermal power plant further has a high pressure bypass system bypassing the steam regulating valve and the high pressure turbine, and an intermediate and low pressure bypass system bypassing the intercept valve and the intermediate and the low pressure tubines. Upon starting the thermal power plant, the steam generated in the boiler is delivered, through the high pressure bypass system, the reheater and the intercept valve, into the intermediate and the low pressure turbines to accelerate the turbines, and after a sinchronous steam supply, the steam is delivered into the high pressure turbine through the steam regulating valve to increase a load imposed on the power plant instead of being delivered into the high pressure bypass system. The method for starting the thermal power plant is characterized in that an opening control of the steam regulating valve is conducted when a reheated steam pressure becomes equal to or lower than a predetermined pressure level as a result of opening of the intercept valve.