FIELD: power engineering.
SUBSTANCE: invention relates to power engineering, particularly steam turbine construction, and can be used in design of packs of working blades of high-loaded stages of high-pressure cylinders of steam turbines. Steam turbine working blades package is made as a whole and comprises a shroud, at least two airfoils with inlet and outlet edges, connected to the shroud along their peripheral sections, intermediate body arranged between shank neck and airfoils is connected therewith via root sections and shank flange. Both the shroud and the intermediate body have contact surfaces and are provided with projections with mating slots, wherein said contact surfaces include contact surfaces of projections and mating slots. Ratio of height of airfoils to height of intermediate body is in range from 0.5 to 2.3. Ratio of the width of the neck of the shank to the width of the shank flange is in range from 0.1 to 0.7. Height of projections of intermediate body is equal to height of intermediate body. Intermediate body contact surfaces are made in the form of ruled surfaces, each of which is formed by one straight line, both on the side of the projection and on the side of the mating slot, wherein intermediate body protrusion contact surface mates with that of its mating slot.
EFFECT: providing operational reliability of a package of working blades at various operating modes of a steam turbine.
1 cl, 5 dwg
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|
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| IMPELLER WHEEL OF FIRST STAGE OF HIGH PRESSURE COMPRESSOR (HPC) ROTOR OF TURBOCHARGER ENGINE (VARIANTS), HPC ROTOR IMPELLER WHEEL DISC, HPC ROTOR IMPELLER WHEEL BLADE, HPC ROTOR IMPELLER WHEEL BLADE RING | 2016 |
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| SECOND STAGE IMPELLER WHEEL OF HIGH PRESSURE COMPRESSOR (HPC) ROTOR OF TURBOCHARGER ENGINE (VARIANTS), HPC ROTOR IMPELLER WHEEL DISC, HPC ROTOR IMPELLER WHEEL BLADE, HPC ROTOR IMPELLER WHEEL BLADE RING | 2016 |
|
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