Gas turbine arrangement and method for operating a gas turbine arrangement
First Claim
1. A gas turbine arrangement comprising:
- an annulus, which is axially delimited between a rotor unit, rotatable around a rotor axis, and at least one stationary component;
a plurality of cooling medium outlet openings, from which a cooling medium flow can be discharged, lead into the annulus, from the at least one stationary component, the cooling medium flows proportionately into cooling medium inlet openings, provided in the rotor unit in a flow direction of the cooling medium flow, that propagates through the annulus,radially to the annulus, at least one inner cavity which is delimited by the rotor unit and by the at least one stationary component, the at least one inner cavity is pressurized with a purging gas, and is fluidically connected to the annulus,wherein the at least one stationary component and the rotor unit comprise a constriction by which the at least one inner cavity is separated from the radially outer annulus and via which the at least one inner cavity is fluidically connected to the radially outer annulus, andwherein flow guides, which are fastened on the at least one stationary component on one side and extend from the radially innermost portion of the at least one stationary component, project into the constriction and guide a purging gas flow, the flow guides have a profile of a design which extends in a curved manner in the axial direction, and the flow guides have throughflow sections which extend in a curved manner from an axial inlet to an axial outlet.
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Accused Products
Abstract
A gas turbine arrangement and a method of operating are provided. The turbine includes an annulus, axially delimited between a rotor unit, and at least one stationary component. Cooling medium outlet openings, lead into the annulus, from the stationary component. The cooling medium flows into cooling medium inlet openings, in the rotor unit in a flow direction, which propagates through the annulus. At least one inner cavity, radially to the annulus, is delimited by the rotor unit and by the stationary component. The inner cavity is pressurized with a purging gas, and is fluidically connected to the annulus. The stationary component and the rotor unit include a constriction by which the inner cavity is separated from the radially outer annulus and via which the inner cavity is fluidically connected to the radially outer annulus. Flow guides, fastened on the stationary component on one side, project into the constriction.
12 Citations
14 Claims
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1. A gas turbine arrangement comprising:
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an annulus, which is axially delimited between a rotor unit, rotatable around a rotor axis, and at least one stationary component; a plurality of cooling medium outlet openings, from which a cooling medium flow can be discharged, lead into the annulus, from the at least one stationary component, the cooling medium flows proportionately into cooling medium inlet openings, provided in the rotor unit in a flow direction of the cooling medium flow, that propagates through the annulus, radially to the annulus, at least one inner cavity which is delimited by the rotor unit and by the at least one stationary component, the at least one inner cavity is pressurized with a purging gas, and is fluidically connected to the annulus, wherein the at least one stationary component and the rotor unit comprise a constriction by which the at least one inner cavity is separated from the radially outer annulus and via which the at least one inner cavity is fluidically connected to the radially outer annulus, and wherein flow guides, which are fastened on the at least one stationary component on one side and extend from the radially innermost portion of the at least one stationary component, project into the constriction and guide a purging gas flow, the flow guides have a profile of a design which extends in a curved manner in the axial direction, and the flow guides have throughflow sections which extend in a curved manner from an axial inlet to an axial outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for operating a gas turbine arrangement having an annulus, which is axially delimited between a rotor unit, rotatable around a rotor axis, and at least one stationary component;
- a plurality of cooling medium outlet openings, from which a cooling medium flow can be discharged, lead into the annulus, from the at least one stationary component, the cooling medium flows proportionately into cooling medium inlet openings, provided in the rotor unit in a flow direction of the cooling medium flow, that propagates through the annulus, the arrangement also comprising, radially to the annulus, at least one inner cavity which is delimited by the rotor unit and by the at least one stationary component, the at least one inner cavity is pressurized with a purging gas, and is fluidically connected to the annulus, a constriction which separates the at least one inner cavity from the radially outer annulus and via which the at least one inner cavity is fluidically connected to the radially outer annulus, and flow guides, which are fastened on the at least one stationary component on one side and extend from the radially innermost portion of the at least one stationary component, project into the constriction and guide a purging gas flow, the flow guides have a profile of a design which extends in a curved manner in the axial direction, and the flow guides have throughflow sections which extend in a curved manner, the method comprising;
passing, as a result of a pressure drop between the at least one cavity and the annulus, the pressurized purging gas, in the form of a purging gas flow, through the constriction by which the at least one inner cavity is separated from the radially outer annulus and via which the at least one inner cavity is fluidically connected to the radially outer annulus; and applying a generally swirl-free flow characteristic to the purging gas flow when passing through the constriction. - View Dependent Claims (13)
- a plurality of cooling medium outlet openings, from which a cooling medium flow can be discharged, lead into the annulus, from the at least one stationary component, the cooling medium flows proportionately into cooling medium inlet openings, provided in the rotor unit in a flow direction of the cooling medium flow, that propagates through the annulus, the arrangement also comprising, radially to the annulus, at least one inner cavity which is delimited by the rotor unit and by the at least one stationary component, the at least one inner cavity is pressurized with a purging gas, and is fluidically connected to the annulus, a constriction which separates the at least one inner cavity from the radially outer annulus and via which the at least one inner cavity is fluidically connected to the radially outer annulus, and flow guides, which are fastened on the at least one stationary component on one side and extend from the radially innermost portion of the at least one stationary component, project into the constriction and guide a purging gas flow, the flow guides have a profile of a design which extends in a curved manner in the axial direction, and the flow guides have throughflow sections which extend in a curved manner, the method comprising;
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14. A gas turbine arrangement comprising:
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an annulus, which is axially delimited between a rotor unit, rotatable around a rotor axis, and at least one stationary component; a plurality of cooling medium outlet openings, from which a cooling medium flow can be discharged, lead into the annulus, from the at least one stationary component, the cooling medium flows proportionately into cooling medium inlet openings, provided in the rotor unit in a flow direction of the cooling medium flow, that propagates through the annulus, radially to the annulus, at least one inner cavity which is delimited by the rotor unit and by the at least one stationary component, the at least one inner cavity is pressurized with a purging gas, and is fluidically connected to the annulus, wherein the at least one stationary component and the rotor unit comprise a constriction by which the at least one inner cavity is separated from the radially outer annulus and via which the at least one inner cavity is fluidically connected to the radially outer annulus, wherein flow guides, which are fastened on the at least one stationary component on one side and extend from the radially innermost portion of the at least one stationary component, project into the constriction and guide a purging gas flow, and wherein the flow guides are variably adjustable around at least one spatial axis.
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Specification