Invention Grant
- Patent Title: Cooling of turbine blade suction tip rail
- Patent Title (中): 涡轮机叶片抽吸导轨的冷却
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Application No.: US11602683Application Date: 2006-11-21
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Publication No.: US07704047B2Publication Date: 2010-04-27
- Inventor: George Liang , Ralph Warren Mathews
- Applicant: George Liang , Ralph Warren Mathews
- Applicant Address: US FL Orlando
- Assignee: Siemens Energy, Inc.
- Current Assignee: Siemens Energy, Inc.
- Current Assignee Address: US FL Orlando
- Main IPC: F01D5/18
- IPC: F01D5/18

Abstract:
A turbine blade including an airfoil, the airfoil including an airfoil outer wall having pressure and suction sidewalls joined together at chordally spaced apart leading and trailing edges extending radially outwardly from a blade root to a blade tip surface. A continuous squealer tip rail extends radially outwardly from and substantially continuously around the blade tip surface forming a radially outwardly open squealer pocket. The squealer tip rail includes an aft portion adjacent to the trailing edge, where the pressure side tip rail is discontinued in the chordal location of the aft portion. A plurality of chordally spaced film cooling holes are provided in a surface of the suction sidewall and provides a cooling fluid flow along the aft portion of the squealer tip rail surface to define a sub-boundary layer or film of cooling fluid between a hot gas vortex flow and the aft portion of the squealer tip rail at the suction sidewall.
Public/Granted literature
- US20080118367A1 Cooling of turbine blade suction tip rail Public/Granted day:2008-05-22
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