Gas turbine
AssigneeSiemens Aktiengesellschaft
InventorPeter Tiemann
Life of this patent
Estimating the term…
Abstract
In a turbine (1) having a moving-blade row which has a moving blade (12) on a turbine shaft (8), and having a guide blade (14) which has a guide-blade row, an especially high efficiency is to be achieved with simple means with the turbine blades (12, 14) being cooled in a reliable manner. To this end, the cooling-medium passage inside the guide blade (14), according to the invention, is split up into a first and a second partial-flow passage, the cooling medium flowing in the first partial-flow passage being used for cooling the guide blade (14), and the cooling medium flowing in the second partial-flow passage being passed on more or less free of losses.
Claims12
A gas turbine with a turbine casing, comprising a guide-blade row having a guide blade with an integrated cooling-medium passage which is connected to a cooling circuit in which a cooling medium flows, the cooling-medium passage being split into a first and a second partial-flow passage in such a way that a first partial flow of the cooling medium flowing in the first partial-flow passage is largely used for cooling the guide blade, and in that a second partial flow of the cooling medium flowing in the second partial-flow passage is passed on generally free of losses, wherein the second partial flow of the cooling medium is passed on generally free of losses to a guide blade of a next guide-blade row in the direction of flow of the working medium.
A gas turbine, comprising:
- a turbine casing;
- and
- a guide-blade row at least partially enclosed by the casing, the guide-blade row having a plurality of guide blades and a cooling-medium passage connected to a cooling circuit in which a cooling medium flows,
- wherein the cooling-medium passage is divided inside the guide-blade into a first and a second partial-flow passage so that a first partial flow of the cooling medium flowing in the first partial-flow passage is generally used for cooling the guide blade, and a second partial flow of the cooling medium flowing in the second partial-flow passage is passed generally free of losses.
A gas turbine adapted for use in a land-based power generation system, comprising:
- a plurality of guide-blades arranged in a row;
- and
- a cooling-medium passage in operative communication with the guide blades and connected to a cooling circuit in which a cooling medium flows,
- wherein the cooling-medium passage is divided into a first and a second partial-flow passage, with a first partial flow of the cooling medium flowing in the first partial-flow passage generally used for cooling the guide blade, and a second partial flow of the cooling medium flowing in the second partial-flow passage passed generally free of losses, wherein a cooling-medium compressor which is connected upstream of the cooling circuit is dimensioned so that under operating conditions the compressor produces a pressure increase in the cooling medium such that the cooling medium, when fed back into a flow space surrounding the combustion chamber of the gas turbine, has the approximate pressure prevailing in the flow space.
A gas turbine with a turbine casing, comprising a guide-blade row having a guide blade with an integrated cooling-medium passage which is connected to a cooling circuit in which a cooling medium flows, the cooling-medium passage being split inside the guide-blade into a first and a second partial-flow passage in such a way that a first partial flow of the cooling medium flowing in the first partial-flow passage is largely used for cooling the guide blade, and in that a second partial flow of the cooling medium flowing in the second partial-flow passage is passed on generally free of losses.
Dependencies are inferred from the claim text.