FIELD: engines and pumps.
SUBSTANCE: labyrinth overband seal of steam turbine comprising sealing annular combs of turbine rotor, close-meshed honeycomb units soldered to segments of honeycomb unit holders between segments of sealing annular combs of stator, annular groove of turbine stator cartridge, which is T-shaped in longitudinal section of turbine. Segments of close-meshed honeycomb unit holders are made of sheet material, to which on both sides of honeycomb units here are segments of annular combs from sheet material soldered with tack weld by means of point welding. Segments of honeycomb unit holders are installed into T-shaped groove of turbine stator and are fixed against radial and circumferential shifts by segments of stop wire installed with close fit and overlapping in circumferential direction in slot between segments of honeycomb unit holders and turbine stator.
EFFECT: reduced cost of manufacture.
5 dwg
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