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Title:
BLADE TIP SEALING APPARATUS FOR GAS TURBINE
Document Type and Number:
WIPO Patent Application WO/2015/108354
Kind Code:
A1
Abstract:
Disclosed is a blade tip sealing apparatus for a gas turbine, the blade tip sealing apparatus which can minimize leakage loss of a combustion gas and enhance the efficiency of an engine by means of the formation of blow seals for generating countercurrent movement that is opposite to the main movement of the combustion gas in a gap portion between a casing and blades of a turbine. The blade tip sealing apparatus is provided with: a casing (22) for guiding the movement of a combustion gas; a plurality of blades (26) connected to a rotating shaft (20) inside the casing (22); a shroud (28) provided so as to cover the front end portions of the blades (26); a plurality of blow seals (30) formed on the outer peripheral side along the entire periphery of the shroud (28); and a rotating device for variably adjusting the inclination angles of the blow seals (30) on the basis of the rotational speed of the blades (26).

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Inventors:
KIM KYUNG KOOK (KR)
JUNG SUNG CHUL (KR)
Application Number:
PCT/KR2015/000443
Publication Date:
July 23, 2015
Filing Date:
January 15, 2015
Export Citation:
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Assignee:
DOOSAN HEAVY IND CONSTR CO LTD (KR)
International Classes:
F01D5/20; F01D5/14; F02C7/00
Foreign References:
JP2011012682A2011-01-20
JP2013181577A2013-09-12
JPH0849564A1996-02-20
KR20120092160A2012-08-20
KR20060076203A2006-07-04
Attorney, Agent or Firm:
HONESTY & JR PARTNERS INTELLECTUAL PROPERTY LAW GROUP (KR)
특허법인 정안 (KR)
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