FIELD: mechanical engineering; turbomachines.
SUBSTANCE: proposed movable blades of high-pressure turbine contains at least one cooling circuit. Cooling circuit is formed at least by one space passing radially between head and root of blade, at least one inlet hole for air on one radial end of space or spaces for delivering cooling air into cooling circuit or circuits, and several outlet slots. Outlet slots open into space or spaces and come to trailing edge of blade. Outlet slots are located lengthwise the trailing edge between root and head of blade, being orientated practically perpendicular to longitudinal axis of blade. At least one outlet slot nearest to blade feather root is made with tilting to head of blade at angle from 10 ° to 30 ° to axis of blade rotation.
EFFECT: prevention of formation of cracks by outlet slot nearest to feather root.
5 cl
| Title | Year | Author | Number |
|---|---|---|---|
| GAS-TURBINE BLADE WITH COOLING LOOPS | 2004 |
|
RU2296225C2 |
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