FIELD: engineering of extending packing elements for rotary machines.
SUBSTANCE: packing segment for packing ring meant for usage at channel of passage of hot gas in turbo-machine, contains packing surface, on which a set of packing teeth positioned at certain distance from each other in axial directions is fastened, narrowed central section, positioned radially outside the packing surface, and mounting section, positioned radially outside the central section. At least one aperture for feeding steam passes at an angle to segment surface, which is the most outside one in radial direction, up to location along central section side so that during usage at least a part of aperture for feeding is open for hot gas at gas passage channel so that gas may pass through the feeding aperture into hollow behind the segment.
EFFECT: increased manufacturability of device.
2 cl, 2 dwg
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