FIELD: heat power engineering.
SUBSTANCE: invention can be used for cooling rotors of high-temperature steam turbines. Proposed high-temperature multistage steam turbine has housing with nozzle vanes of first stage and rotor with disks with working blades and holes to bypass steam. Ratio of summary passage section of working blades to summary passage section of nozzle vanes in first stage is within the limits protected by proposed invention.
EFFECT: increased efficiency of cooling of turbine rotor by guaranteed organization of reverse flow of steam leakages in bypass holes of disk of first stage in direction from diaphragm of second stage to front end seal.
5 dwg
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