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:
Dec. 04, 2001
Filed:
Jan. 27, 1999
Yoshiyuki Kita, Takasago, JP;
Tomoka Tanaka, Takasago, JP;
Yasuhiro Hashimoto, Takasago, JP;
Masayuki Takahama, Takasago, JP;
Jun Yasuraoka, Takasago, JP;
Hidetoshi Iida, Takasago, JP;
Koichi Akagi, Takasago, JP;
Hideki Haruta, Takasago, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A gas turbine steam cooled system has a high temperature portion,outlet steam temperature maintained to a predetermined value without a cooling steam pressure becoming lower than the pressure in the gas turbine cylinder. Steam coming from an intermediate pressure superheater,of a waste heat recovery boiler,is led into the high temperature portion,of the gas turbine for cooling thereof. The temperature of the cooling steam at the outlet of the high temperature portion,is detected by a high temperature portion outlet steam temperature detector,, and a signal thereof is sent a lower value selector,via a temperature controller,. Pressure in the gas turbine cylinder is detected by a gas turbine cylinder pressure detector,, and pressure of the cooling steam at the high temperature portion,outlet is detected by a high temperature portion outlet steam pressure detector,. A differential signal thereof is sent to a pressure controller,. Signals from the temperature controller,and the pressure controller,are inputted into the lower selector,, and temperature control valve,is controlled by the lower value thereof to be opened and closed.