FIELD: mechanical engineering.
SUBSTANCE: sampling pipes for cooling air supply into a turbine with air bleed windows. Front and back blade wheels with a bolted joint. Air bleed windows are provided on a flange of the back wheel between the bolt with their output into a flow part. The windows are sloped along the rotor rotation. In front of the piston rings mounted in front of a sampling cavity mounted under sampling pipes there are elastic projections. A lower projection of the front wheel preferentially has an end stop with the back wheel.
EFFECT: decreasing stress decline in the bolt holes at the back wheel, and simplified selection and reduction of air loss, higher engine reliability and lifetime.
2 cl, 4 dwg
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