US 12,312,976 B2
Gas turbine blade having shelf squealer tip
Jeong-Woo Kim, Daejeon (KR); Hyung-Hee Cho, Seoul (KR); Joo-Hyoung Lee, Seoul (KR); Min-Ho Bang, Seoul (KR); Jeong-Ju Kim, Seoul (KR); Seung-Yeong Choi, Seoul (KR); Tae-Hyun Kim, Seoul (KR); and Hee-Seung Park, Seoul (KR)
Assigned to AGENCY FOR DEFENSE DEVELOPMENT, Daejeon (KR); and INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY, Seoul (KR)
Appl. No. 18/557,690
Filed by AGENCY FOR DEFENSE DEVELOPMENT, Daejeon (KR); and INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY, Seoul (KR)
PCT Filed May 4, 2022, PCT No. PCT/KR2022/006410
§ 371(c)(1), (2) Date Oct. 27, 2023,
PCT Pub. No. WO2022/235076, PCT Pub. Date Nov. 10, 2022.
Claims priority of application No. 10-2021-0057902 (KR), filed on May 4, 2021.
Prior Publication US 2024/0229652 A1, Jul. 11, 2024
Int. Cl. F01D 5/20 (2006.01); F01D 5/14 (2006.01); F01D 5/18 (2006.01)
CPC F01D 5/20 (2013.01) [F01D 5/14 (2013.01); F01D 5/141 (2013.01); F01D 5/18 (2013.01); F05D 2220/32 (2013.01); F05D 2240/307 (2013.01); F05D 2240/55 (2013.01); F05D 2260/20 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A gas turbine blade having a shelf squealer tip, the gas turbine blade comprising:
an airfoil-shaped blade housing; and
a squealer tip extending from an edge portion of a tip surface that is an end surface of the blade housing,
wherein the squealer tip is formed only on a part of the edge portion of the tip surface,
wherein the squealer tip comprises:
a suction surface-side squealer tip extending from a side of the edge portion of the tip surface adjacent to a suction surface of the blade housing; and
a pressure surface-side squealer tip extending from a side of the edge portion of the tip surface adjacent to a pressure surface of the blade housing,
wherein the pressure surface-side squealer tip is formed only on a part of the tip surface at the side adjacent to the pressure surface,
wherein a shelf portion, in which the pressure surface-side squealer tip is not formed, is formed at a side disposed adjacent to the pressure surface of the tip surface and provided from an end of a leading edge of the blade housing by a predetermined length,
wherein the tip surface is opened laterally through the shelf portion formed at a same height as the tip surface,
wherein the pressure surface-side squealer tip is formed to be spaced apart from the side of the tip surface adjacent to the pressure surface, and the pressure surface-side squealer tip is formed on a portion of the pressure surface side of the tip surface where the shelf portion is not formed,
wherein the pressure surface-side squealer tip is formed to be inclined upward in a direction toward the pressure surface.