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:
Jun. 05, 2012
Filed:
Feb. 13, 2009
Kenji Nanataki, Hitachi, JP;
Hidetaro Murata, Hitachi, JP;
Nobuaki Kizuka, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The temperature rise of a wheel space between a high-pressure turbine and a low-pressure turbine is suppressed. Cooling air is led from outside a casingto a wheel space via a low-pressure turbine initial stage stator bladeand a diaphragm. An upstream side space seal portionis adapted to restrict and divide the upstream side space into an outer circumferential portionand an inner circumferential portionand to allow cooling air to the upstream side space outer circumferential portionto blow out into the upstream side space outer circumferential portion. Also, a downstream side space seal portionis adapted to restrict and divide the downstream side space into an outer circumferential portionand an inner circumferential portionand to allow cooling air to blow out into the downstream side space outer circumferential portion