Method of modifying a steam turbine
AssigneeALSTOM Technology Ltd
InventorFrederic Lamarque
Life of this patent
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Abstract
A method of modifying a steam turbine to change from a first maximum thermal power of the steam generator to a second maximum thermal power of the steam generator. The method can include replacing, in the high-pressure module, at least one set of fixed blades sized for the first maximum thermal power by at least one set of fixed blades sized for the second maximum thermal power. The at least one set of moving blades are sized to operate at the first and second maximum thermal powers. The rotor and the at least one set of moving blades of the high-pressure module remain unchanged on changing from the first maximum thermal power to the second maximum thermal power.
Claims16
A method of modifying a steam turbine, to enable the turbine to be adapted to change from a first maximum thermal power of a steam generator that generate steams to a second maximum thermal power of the steam generator different than the first maximum thermal power, the turbine including a high-pressure module having at least one set of fixed blades and a rotor supporting at least one set of moving blades, the method comprising:
- replacing, in the high-pressure module, at least one first set of fixed blades sized for the first maximum thermal power by at least one second set of fixed blades sized for the second maximum thermal power;
- and
- sizing the at least one set of moving blades to operate at the first and second maximum thermal powers, the rotor and the at least one set of moving blades of the high-pressure module remaining unchanged on changing from the first maximum thermal power to the second maximum thermal power.
Interchangeable turbine blades for installation in a steam turbine having a first set of fixed blades configured for a first maximum thermal power of a high-pressure module of a steam generator, the interchangeable turbine blades comprising:
- a second set of fixed blades, sized to replace the first set of fixed blades, but configured for a second maximum thermal power of the steam generator which is different than the first maximum thermal power;
- wherein the second set of fixed blades are sized for operating in the high-pressure module with a same set of moving blades on a rotor of the high-pressure module as the first set of blades which they are to replace.
Dependencies are inferred from the claim text.