Vapour turbine
AssigneeNuovo Pignone S.p.A.
InventorsEugenio Giorni, Riccardo Paoletti, Marco De Iaco, Paolo Bendinelli
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Abstract
Vapour turbine operating with geothermal vapours containing corrosive agents or aggressive substances such as chlorides and/or sulfides in particular. The turbine comprises a series of stator blades and a series of rotor blades, each stator blade of the series of stator blades comprises a surfacing consisting of a nickel alloy containing a quantity of nickel ranging from 54% to 58% by weight to avoid the washing of the geothermal vapours, at the same time maintaining a high useful life of the series of stator blades and vapour turbine.
Claims10
A vapour turbine operating with geothermal vapours containing corrosive agents or aggressive substances such as chlorides and/or sulfides in particular, said turbine comprising a series of stator blades and a series of rotor blades, characterized in that each stator blade of the series of stator blades comprises a surfacing consisting of a nickel alloy containing a quantity of nickel ranging from 54% to 58% by weight, to avoid the washing of the geothermal vapours, at the same time maintaining a high useful life of the series of stator blades and vapour turbine.
Use of a nickel-chromium-molybdenum alloy surfacing for a stator blade of a vapour turbine operating with geothermal vapours containing corrosive agents, such as chlorides and/or sulfides in particular, to avoid the washing of said geothermal vapours, maintaining a high useful life of said stator blade.
Use of a chromium carbide surfacing for a rotor blade of a vapour turbine operating with geothermal vapours containing corrosive agents, such as chlorides and/or sulfides in particular, to avoid the washing of said geothermal vapours, maintaining a high useful life of said rotor blade.
(canceled)
Dependencies are inferred from the claim text.