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:
Feb. 20, 2001
Filed:
Feb. 24, 1998
Yasuoki Tomita, Takasato, JP;
Kazuharu Hirokawa, Takasago, JP;
Hiroki Fukuno, Takasago, JP;
Kiyoshi Suenaga, Takasago, JP;
Yukihiro Hashimoto, Takasago, JP;
Eisaku Ito, Takasago, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A gas turbine seal structure provided between end portions of a moving blade platform and a stationary blade inside shroud. The sealing performance of the seal structure is improved by increasing the resistance to the flow of air. A seal plate (,) is mounted to an end portion of a platform (,) of the moving blade (,) and a seal portion is formed by seal fins (,) and a honeycomb seal (,) disposed on a lower surface of an end portion (,) of an inside shroud (,) of a stationary blade (,). Sealing air from the stationary blade (,) produces a high temperature in a cavity (,) and flows into a space (,), and also air leaking from the cooling air of the moving blade (,) is able to escape into a high temperature combustion gas passage through a seal portion. However, since the seal plate has three seal fins (,) that are inclined in a direction so as to oppose the air flow, air resistance is increased and the flow of air into the combustion gas passage is prevented.