FIELD: engines and pumps.
SUBSTANCE: invention relates to a device for turbomachine high-pressure area isolation from the low pressure area. The turbomachine includes one or more stator parts and one or more rotor parts. The device comprises labyrinth seal 502 with the first set of grooves 504 and the second set of grooves 506, wherein the first set of grooves is located in a helical configuration, and the second set of grooves is located in a cylindrical configuration, with seal 502 located between at least one of the said parts of the turbomachine rotor and at least one of the said parts of the turbomachine stator between the high pressure area and low pressure area of the turbomachine, and the helical configuration has the helix angle, constituting 10° or less, preferably 0.5° to 5°.
EFFECT: effect of turbomachine stabilization is obtained, and leakage caused by the second set of grooves is negligible.
14 cl, 12 dwg
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