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:
Nov. 25, 2003
Filed:
Nov. 28, 2001
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
An apparatus and method for steam cooling a gas turbine. An intermediate-pressure drum of a recovery boiler supplies outlet steam, as a cooling steam, to a combustor through a steam channel The flow rate of steam guided into the combustor is adjusted through opening or closing of a first flow control valve by a controller such that the pressure of the intermediate-pressure drum becomes a set value set according to a load status of a gas turbine A required amount of steam according to the load status of the gas turbine is fed to the combustor Thus, the flow rate of steam guided into the combustor is controlled by adjustment of the existing first flow control valve for maintaining the pressure of the intermediate-pressure drum in a predetermined state, without the need to provide an expensive valve device in the steam channel