Turbine airfoil with an internal cooling system having vortex forming turbulators

Lee, Ching-Pang

Title: Turbine airfoil with an internal cooling system having vortex forming turbulators

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Abstract

A turbine airfoil usable in a turbine engine and having at least one cooling system is disclosed. At least a portion of the cooling system may include one or more cooling channels having a plurality of turbulators protruding from an inner surface and positioned generally nonorthogonal and nonparallel to a longitudinal axis of the airfoil cooling channel. The configuration of turbulators may create a higher internal convective cooling potential for the blade cooling passage, thereby generating a high rate of internal convective heat transfer and attendant improvement in overall cooling performance. This translates into a reduction in cooling fluid demand and better turbine performance.

Inventors:: Lee, Ching-Pang

Issue Date:: 2014-12-30

Research Org.:: Siemens Energy, Inc., Orlando, FL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1166773

Patent Number(s):: 8920122

Application Number:: 13/417,714

Assignee:: Siemens Energy, Inc. (Orlando, FL)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

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F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D5/182 - {Transpiration cooling}
F01D5/186 - {Film cooling
F01D5/187 - {Convection cooling}

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DOE Contract Number:: FC26-05NT42644

Resource Type:: Patent

Resource Relation:: Patent File Date: 2012 Mar 12

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Lee, Ching-Pang. Turbine airfoil with an internal cooling system having vortex forming turbulators.  United States: N. p., 2014. 
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                    Lee, Ching-Pang. Turbine airfoil with an internal cooling system having vortex forming turbulators.  United States.

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                    Lee, Ching-Pang. Tue .  
        "Turbine airfoil with an internal cooling system having vortex forming turbulators".  United States.  https://www.osti.gov/servlets/purl/1166773.

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@article{osti_1166773,

  title        = {Turbine airfoil with an internal cooling system having vortex forming turbulators},

  author       = {Lee, Ching-Pang},

  abstractNote = {A turbine airfoil usable in a turbine engine and having at least one cooling system is disclosed. At least a portion of the cooling system may include one or more cooling channels having a plurality of turbulators protruding from an inner surface and positioned generally nonorthogonal and nonparallel to a longitudinal axis of the airfoil cooling channel. The configuration of turbulators may create a higher internal convective cooling potential for the blade cooling passage, thereby generating a high rate of internal convective heat transfer and attendant improvement in overall cooling performance. This translates into a reduction in cooling fluid demand and better turbine performance.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2014},

  month        = {12}

}

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