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. 15, 2001
Filed:
Dec. 23, 1998
Toshio Sakon, Takasago, JP;
Tadayoshi Endo, Takasago, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A steam cooled type gas turbine has a steam chamber unit formed in one unit having a compact structure through which steam, as a cooling medium, is appropriately supplied, used for cooling and recovered. The steam chamber unit (,) formed in one unit has a steam supply passage (,) for leading cooling steam, a steam connection passage (,) for leading the cooling steam which has cooled a front stage (,) to a subsequent stage (,) and a steam recovery passage (,) for recovering the cooling steam which has cooled a plurality of the stages. The unit further has a heat insulating structural member (,) for insulation of heat from a moving blade (,) and a stationary blade supporting portion (,), both provided in an inner circumferential surface portion of the steam chamber unit. Supply and recovery of steam to and from stationary blades and cooling by steam of stationary blades can be done with a compact structure having a single consecutive cooling steam passage so that the stationary blades can be cooled efficiently.