FIELD: mechanical engineering; gas turbines.
SUBSTANCE: device for adjusting clearance between heads of working blades and stationary ring unit of gas turbine contains circular adjusting unit enclosing stationary ring unit. Adjusting unit has at least two circulating air ring channels spaced in axial direction. Each channel is provided with holes to change temperature of stationary ring unit by air blowing. Device to adjust clearance contains also ring channel to deliver air into circulating air ring channels, and at least one air duct supplying air to air delivery channel. Ring air delivery channel is spatially separated in radial direction from circulating air ring channels. Adjusting unit contains additionally hollow distributing bridges connecting air delivery channel with circulating air channels to feed air into said channels with provision of possibility for air supplied for blowing stationary ring unit to flow in axial direction between air delivery channel and circulating air channels with subsequent discharge of air from stationary ring unit.
EFFECT: provision of high degree of equality of temperature in stationary ring unit, no interferences of discharge and blowing air flows.
9 cl, 4 dwg
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