Title:
TURBINE BLADE HAVING COMPOSITE SPECIALLY-SHAPED SLOTTED GAS FILM COOLING STRUCTURE AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/029531
Kind Code:
A1
Abstract:
A turbine blade (100) having a composite specially-shaped slotted gas film cooling structure. The turbine blade (100) has a hollow structure, and an outer wall (101) thereof has multiple recessed first slots (105). A bottom portion (500) of each first slot is provided with multiple discrete holes A (400) extending to an inner wall (102) of the turbine blade. The first slot (105) is a specially-shaped slot, and comprises at least two portions in a depth direction. The portion having a depth of H1 and starting from the bottom portion (500) of the first slot is a first portion (302), and the remainder is a second portion (301). At least one side wall of the second portion (301) is formed by lateral extension of the same side wall of the first portion (302). Gas ejected from the discrete holes A (400) fully expands in the first portion (302) of the first slot, forms a continuous and uniform positive pressure gas, and is conveyed, via the second portion (301), to a side of an open end close to the outer wall (101) of the turbine blade and flows out, so as to form a continuous and uniformly adhering gas film on the outer wall (101) of the turbine blade. Also disclosed is a manufacturing method for the turbine blade.
Inventors:
ZHANG WENWU (CN)
GUO CHUNHAI (CN)
ZHANG TIANRUN (CN)
WANG YUFENG (CN)
GUO CHUNHAI (CN)
ZHANG TIANRUN (CN)
WANG YUFENG (CN)
Application Number:
PCT/CN2018/125109
Publication Date:
February 13, 2020
Filing Date:
December 28, 2018
Export Citation:
Assignee:
NINGBO INSTITUTE OF MAT TECHNOLOGY&ENGINEERING CHINESE ACADEMY OF SCIENCES (CN)
NINGBO III LASERS TECH CO LTD (CN)
NINGBO III LASERS TECH CO LTD (CN)
International Classes:
F01D5/18
Foreign References:
| CN108843404A | 2018-11-20 | |||
| CN203867627U | 2014-10-08 | |||
| CN203867627U | 2014-10-08 | |||
| CN108223019A | 2018-06-29 | |||
| CN101042056A | 2007-09-26 | |||
| CN106593543A | 2017-04-26 | |||
| CN106593543A | 2017-04-26 | |||
| CN103696811A | 2014-04-02 | |||
| US8851848B1 | 2014-10-07 | |||
| US20110097188A1 | 2011-04-28 |
Other References:
YAHYA, S M: "Turbines Compressors and Fans", 2010, TATA MCGRAW-HILL EDUCATION, pages: 430 - 433
See also references of EP 3835549A4
See also references of EP 3835549A4
Attorney, Agent or Firm:
NINGBO YUANWEI INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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