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:
Apr. 23, 2019
Filed:
Jan. 30, 2015
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Kazuki Morimoto, Tokyo, JP;
Katsunori Tanaka, Tokyo, JP;
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Abstract
A gas turbine includes a cooling air supply passage which supplies compressed air bled from a compressor to a disk cavity of a turbine, a cooler side valve in the cooling air supply passage, a temperature measurement unit which measures ambient temperature of the disk cavity, and a control device which adjusts an opening degree of the cooler side valve based on the ambient temperature measured by the temperature measurement unit. The control device includes a first valve opening degree setting value and a second valve opening degree setting value larger than the first valve opening degree setting value of the cooler side valve, the first valve opening degree setting value is used when the ambient temperature is lower than a predetermined switching temperature, and the second valve opening degree setting value is used when the ambient temperature is higher than the switching temperature.