TURBINE BLADE WITH HEAT PROTECTION Russian patent published in 1997 - IPC

FIELD: gas-turbine installations. SUBSTANCE: turbine blade with heat protection includes base and fin on which metal rod ceramic coat is deposited. Surface of rod is sectionalized by lateral ribs, bundles of ceramic fibres oriented along ribs are placed into clearances between ribs. Lateral metal ribs form with bundles lock connection. Apart from bundles ceramoconcrete with fibrous filler is injected into clearances between ribs with formation of sectionalized metal-and-ceramic surface to which layer of oriented ceramic fibres is applied. Ribs have wavelike form with concavities and convexities oriented along fin rod. On fin rod ribs are arranged in the form of spiral and are formed by continuous wire which profile has flat for mounting on fin rod and depressions for fixation of bundle. Longitudinal grooves for porous cooling of fibrous ceramic coat and for protection of blade metal against corrosion with air forcing combustion products out of coat are made in rod under ribs. EFFECT: prolonged service life of turbine blades. 6 cl, 4 dwg