FIELD: mechanical engineering; moist steam turbines. SUBSTANCE: steam turbine stage has guide vane assembly and working wheel located in stator part. Ring moisture outlet channels is made in stator part before working wheel, and grooved structure is formed on stator part surface to entrap drop moisture. Moreover, moisture-collecting grooves are made on surface of stator part which are uniformly spaced over circumference between intervane zone of guide vane assembly and inlet of water outlet channel in cross direction relative to grooves of grooved structure. Area of cross section of moisture collecting grooves exceeds summary area of cross section of grooves of grooved structure between these grooves. EFFECT: provision of reliable direction of moisture into moisture outlet channel. 3 cl, 3 dwg
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