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. 17, 2001
Filed:
Feb. 10, 1999
Toshishige Ai, Takasago, JP;
Masanori Yuri, Takasago, JP;
Yasuoki Tomita, Takasago, JP;
Kiyoshi Suenaga, Takasago, JP;
Sunao Aoki, Takasago, JP;
Hiroki Fukuno, Takasago, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A sealing device for a gas turbine stator blade, in which an outer shroud (,) is mounted by heat insulating rings (,) on a blade ring (,). The blade ring (,) has a first air hole (,), which communicates with a space (,), and a second air hole (,), which communicates with a seal tube (,). The seal tube (,) is inserted into the second air hole (,), and a spring (,) is arranged between a projection (,) of the tube (,) and a retaining portion (,) of the air hole (,) to removably secure the seal tube (,). Cooling air (,) flows through the first air hole (,) to cool the shrouds and the inside of a stator blade (,) until it is released from the trailing edge of the blade. The cooling air also flows into a cavity (,) so that a high pressure can be maintained without a pressure loss because the tube (,) is independent of the space (,) in the blade ring.