A steam turbine, a power plant and a small modular reactor comprising the turbine and a method of manufacturing or servicing of said turbine
AssigneeGeneral Electric Technology GmbH
InventorIvan MCBEAN
Life of this patent
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Abstract
There is provided a reaction blade stage for a steam turbine, wherein the reaction blade stage has a ratio of a blade profile chord length of the fixed blades to a blade profile chord length of the moving blades equal to 1.5-2.5 and the reaction blade stage is located on and/or after the Wilson point of the steam turbine.
Claims15
A steam turbine including at least one steam turbine section, wherein said at least one steam turbine section comprises a plurality of blade stages, each blade stage includes a row of fixed blades and an adjacent row of moving blades that is downstream of the row of fixed blades, and wherein at least one blade stage of the plurality of blade stages has a ratio of a fixed blades profile chord length to a moving blades profile chord length from 1.5 to 2.5 and is a reaction blade stage located on or after the Wilson point of the steam turbine.
A method of manufacturing or servicing of a steam turbine, wherein the steam turbine comprises at least one steam turbine section, wherein said at least one steam turbine section comprises at least one blade stage, each blade stage includes a row of fixed blades and an adjacent row of moving blades that is downstream of the row of fixed blades, the method includes providing at least one blade stage of the plurality of blade stages located on or after the Wilson point of the steam turbine with a ratio of a fixed blades profile chord length to a moving blades profile chord length from 1.5 to 2.5, and wherein said at least one blade stage is a reaction blade stage, or configuring the row of fixed blades of at least one blade stage of the plurality of blade stages located on or after the Wilson point of the steam turbine to obtain a ratio of a fixed blades profile chord length to a moving blades profile chord length from 1.5 to 2.5 and to make said at least one blade stage a reaction blade stage.
Dependencies are inferred from the claim text.