Title:
IMPELLER TUBE-TYPE NOZZLE FOR GAS TURBINE
Document Type and Number:
WIPO Patent Application WO/2018/196198
Kind Code:
A1
Abstract:
Disclosed is an impeller tube-type nozzle (101) for a gas turbine, comprising an inlet section (108), a retraction section (107) and an outlet section (106). The inlet section (108) is a section of annular channel, the retraction section (107) comprises multiple gas flow channels separated by multiple blades (105), each gas flow channel is encircled by a outer peripheral wall face (110), an inner peripheral wall face (111), a suction face of one of two adjacent blades (105) and a pressure face of the other of the two adjacent blades (105), and inlets (102) of the gas flow channels have a fan-shaped cross section. For each gas flow channel, along the direction of gas flow from the inlet (102) of the gas flow channel to the outlet (103) the fan-shaped cross section gradually smoothly transitions into a circular cross section. The outlet section (106) comprises circular pipelines (104) with axially non-varying diameters that correspond to each outlet (103) of the gas flow channels and are respectively connected. Compared with an impeller hole-type nozzle, in the impeller tube-type nozzle the number of blades can be significantly reduced without lowering performance.
Inventors:
LYU JIANBO (CN)
LUO HUALING (CN)
HU SHUZHEN (CN)
PAN XIANDE (CN)
LIU GUOFENG (CN)
LUO HUALING (CN)
HU SHUZHEN (CN)
PAN XIANDE (CN)
LIU GUOFENG (CN)
Application Number:
PCT/CN2017/094921
Publication Date:
November 01, 2018
Filing Date:
July 28, 2017
Export Citation:
Assignee:
AECC COMMERCIAL AIRCRAFT ENGINE CO LTD (CN)
International Classes:
F02C7/18; F01D9/02; F02C7/12
Foreign References:
| CN105114186A | 2015-12-02 | |||
| CN105464724A | 2016-04-06 | |||
| US9228436B2 | 2016-01-05 | |||
| US8584469B2 | 2013-11-19 | |||
| US20110162387A1 | 2011-07-07 | |||
| US20160084095A1 | 2016-03-24 |
Other References:
ADRIEN DULAC: "Master of Science Thesis", ROYAL INSTITUTE OF TECHNOLOGY, article "A CFD ANALYSIS TOWARDS FLOW CHARACTERISTICS OF THREE PRE-SWIRL DESIGNS"
LIU GAOWEN ET AL.: "Investigation on Flow Characteristics and Temperature Drop of an Aerodynamic-Hole Typed Pre-Swirl Nozzle", PROPULSION TECHNOLOGY, vol. 34, no. 3, April 2013 (2013-04-01)
LIU YUXIN ET AL.: "Numerical Investigation on Flow Characteristics of a Vane Shaped Hole Preswirl Nozzle", PROPULSION TECHNOLOGY, vol. 37, no. 2, February 2016 (2016-02-01)
LIU GAOWEN ET AL.: "Numerical Investigation on the Flow of Preswirl Nozzle in Gas Turbine", PROPULSION TECHNOLOGY, vol. 34, no. 5, May 2013 (2013-05-01)
See also references of EP 3617480A4
LIU GAOWEN ET AL.: "Investigation on Flow Characteristics and Temperature Drop of an Aerodynamic-Hole Typed Pre-Swirl Nozzle", PROPULSION TECHNOLOGY, vol. 34, no. 3, April 2013 (2013-04-01)
LIU YUXIN ET AL.: "Numerical Investigation on Flow Characteristics of a Vane Shaped Hole Preswirl Nozzle", PROPULSION TECHNOLOGY, vol. 37, no. 2, February 2016 (2016-02-01)
LIU GAOWEN ET AL.: "Numerical Investigation on the Flow of Preswirl Nozzle in Gas Turbine", PROPULSION TECHNOLOGY, vol. 34, no. 5, May 2013 (2013-05-01)
See also references of EP 3617480A4
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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