F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
F02C 7/28 (2006.01) F01D 9/02 (2006.01) F02C 7/18 (2006.01) F23R 3/42 (2006.01) F23R 3/60 (2006.01)
Patent
CA 2300011
In a tail tube seal structure of gas turbine, a U-shaped groove is provided at one side of a tail tube seal where a flange of a tail tube outlet is fitted, and a pi-shaped groove is provided at other side of the tail tube seal where a gas pass side flange end is fitted, thereby composing the seal of the connection area. Inclined cooling holes are drilled in the tail tube seal in addition to the cooling holes existing conventionally. The cooling air flows in from the inclined holes and cools the gas pass side of the groove due to the film effect. Therefore, the difference in thermal expansion between the groove and flange end is decreased, the wear of this area is decreased, and the reliability of the seal is enhanced.
Kataoka Masahito
Kuwabara Masamitsu
Sato Yoshichika
Suenaga Kiyoshi
Tomita Yasuoki
Fetherstonhaugh & Co.
Mitsubishi Heavy Industries Ltd.
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