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:
Oct. 29, 2002
Filed:
Mar. 31, 1999
Masanori Yuri, Takasago, JP;
Toshishige Ai, Takasago, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A seal ring separating surface for a gas turbine, which sets a shape of an end portion in the separation surface to a cutting surface and reduces the leaking amount of sealing air. A seal ring holding ring ( ) fixes brush seals ( ) on an upstream side of a stationary blade by bolts ( ) respectively, so as to form a seal with respect to a rotor disc ( ). Further, the seal ring holding ring ( ) fixes and supports a seal ring ( ) on a downstream side by a bolt ( ) so as to form a seal with respect to a seal portion ( ) on the disc ( ) side. The brush seals ( ) and the seal ring ( ) are structured so as to have a circular ring shape and a separation construction, and each of the separation pieces has a gap, so that sealing air can leak to a downstream side from an upstream side through the gap. However, since the separation piece end portion is formed in a cutting surface and the shape of the gap is formed in a bypass passage, the resistance of an air flow passage is increased and the amount of leaking air amount is reduced.