Turbine blade having swirling cooling channel and cooling method thereof
AssigneeDoosan Heavy Industries Construction Co., Ltd
InventorSung Chul Jung
Life of this patent
Estimating the term…
Abstract
A turbine blade includes a cooling channel through which cooling air is passed, and a swirl portion provided at an entrance of the cooling channel so as to form a swirl flow in the cooling air. The turbine blade may increase cooling performance of a root unit, improve the stiffness of the root unit, and increase the internal heat transfer efficiency of a blade unit.
Claims20
A turbine blade, comprising:
- a blade unit having a leading edge, a trailing edge, and a cooling channel to pass cooling air there through, the cooling channel including
- a first channel defined in the blade unit adjacent to the leading edge and extending in a longitudinal direction of the blade unit, and
- a second channel defined in the blade unit between the first channel and the trailing edge and extending in the longitudinal direction;
- a root unit including an air entrance, the air entrance including
- a first entrance communicating with the first channel, the first entrance having a first swirl portion to provide a swirl flow of air in the longitudinal direction along the first channel, and
- a second entrance communicating with the second channel, the second entrance having a second swirl portion to provide a swirl flow of air in the longitudinal direction along the second channel;
- and
- a platform unit disposed between the blade unit and the root unit.
A cooling method of a turbine blade which includes a blade unit having a leading edge, a trailing edge, a root unit, and a platform unit disposed between the blade unit and the root unit, a cooling channel having a first channel and a second channel extending in a longitudinal direction of the blade unit through which cooling air passes, the cooling method comprising:
- supplying the cooling air to an air entrance of the root unit that communicates with the cooling channel, the air entrance including a first entrance communicating with the first channel defined adjacent the leading edge and a second entrance communicating with the second channel defined between the first channel and the trailing edge;
- and
- generating a first swirl flow of the cooling air through the first channel via a first swirl portion formed in the first entrance and a second swirl flow of the cooling air through the second channel via a second swirl portion formed in the second entrance.
Dependencies are inferred from the claim text.