FIELD: engines and pumps.
SUBSTANCE: claimed turbine system comprises the first and second platforms, several airfoils and collision plate. Each of several airfoils extends between the first and second platforms. The first and second platforms make the main fluid passage. The second platform has the surface located opposite the main fluid passage and provided with several recesses. The latter are surrounded by elevated edge. The latter make the support for collision plate to be fitted in place and can be composed by the first closed loop. The latter surrounds the first recess of said several recesses and, additionally, surrounding the first bore of the first airfoil of several airfoils and composed of the second closed loop. The latter surrounds the second closed loop of several loops and, additionally, surrounding the second bore of the second airfoil of several airfoils. Note here that the edge portion defines the continuous barrier between the first and second recesses for blocking of cooling fluid. Said barrier sets the conjugation surface for the central area of collision plate. The first bore has the elevated first edge. The first end features smaller height than that of the edge, and/or second bore features the second elevated end. Note here that the latter features the smaller height than that of the edge.
EFFECT: higher efficiency of airfoil and platform cooling, simplified assembly of the turbine system.
22 cl, 4 dwg
