METHOD OF COOLING OF TURBINE STATORS, COOLING SYSTEM FOR ITS IMPLEMENTATION Russian patent published in 2015 - IPC F01D5/18 

FIELD: machine building.

SUBSTANCE: method of cooling of structural elements of engine turbine containing at output structure with positive recuperation coefficient Cp for set of operation modes meaning presence of cooling intended for at least pair of structural elements, one of them is a front stator of the guide vanes, and another the stator adjoining the support of the sealing ring of the rear regulated blades means extraction of the surrounding air flow by suction at level of at least one cooled structural element. Suction is accompanied by passage, that results in creation of the forced convection linked with this structural element, and then by rear air re-supply in the output pipe. Cooling is performed by sequential method by means of successive circulation of the same air flow in two structural elements. Cooling is also performed by parallel method by means of independent circulations if air flows in each of the structural elements or by mixed method by means of successive circulation of the same flow in two structural elements and by independent circulation of the second flow in the second structural element by ambient air extraction at level of the front stator of the guide vanes for successive and mixed cooling, and each structural elements for parallel and mixed cooling.

EFFECT: invention reduces operation expenses, and increases cooling efficiency.

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