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US 6,742,336 B2Granted
Steam turbine power plant
AssigneeHitachi, Ltd.
InventorsShuuichi Itou, Masahiko Sugano, Norikazu Hamaura
Life of this patent
Estimating the term…
Abstract
A steam turbine power plant comprises a high-pressure turbine to be driven by steam generated by a steam generator, a first reheater for separating moisture from steam discharged from the high-pressure turbine and heating the steam, an intermediate-pressure turbine to be driven by the steam heated by the first reheater, a second reheater for heating exhaust steam discharged from the intermediate-pressure turbine, and a low-pressure turbine to be driven by the steam heated by the second reheater. The intermediate-pressure turbine discharges dry steam.
Claims9
A steam turbine power plant comprising:
- a high-pressure turbine to be driven by steam generated by a steam generator;
- a first reheater for separating moisture from steam discharged from the high-pressure turbine and heating the steam;
- an intermediate-pressure turbine to be driven by the steam heated by the first reheater;
- a second reheater for heating exhaust steam discharged from the intermediate-pressure turbine;
- and
- a low-pressure turbine to be driven by the steam heated by the second reheater;
- wherein the intermediate-pressure turbine discharges dry steam.
4 more elements
A steam turbine power plant comprising:
- a high-pressure turbine to be driven by steam generated by a steam generator;
- a first reheater for separating moisture from steam discharged from the high-pressure turbine and heating the steam;
- an intermediate-pressure turbine to be driven by the steam heated by the first reheater;
- a second reheater for separating moisture from steam discharged from the intermediate-pressure turbine and heating the steam;
- and
- a low-pressure turbine to be driven by the steam heated by the second reheater;
- wherein turbine stages of the intermediate-pressure turbine are designed such that the intermediate-pressure turbine discharges dry steam.
4 more elements
A steam turbine power plant comprising:
- a high-pressure turbine to be driven by steam generated by a steam generator;
- a first reheater for separating moisture from steam discharged from the high-pressure turbine and heating the steam obtained by separating moisture from steam discharged from the high-pressure turbine;
- an intermediate-pressure turbine to be driven by the steam heated by the first reheater;
- a second reheater for heating steam discharged from the intermediate-pressure turbine;
- and
- a low-pressure turbine to be driven by the steam heated by the second reheater;
- wherein turbine stages of the intermediate-pressure turbine are designed such that the intermediate-pressure turbine discharges steam of a temperature not lower than saturation temperature.
4 more elements
A steam turbine power plant comprising:
- a high-pressure turbine to be driven by steam generated by a steam generator;
- a moisture separator for separating moisture from steam discharged from the high-pressure turbine;
- a first reheater for heating steam provided by separating moisture from steam discharged from the high-pressure turbine by the moisture separator;
- an intermediate-pressure turbine to be driven by the steam heated by the first reheater;
- a second reheater for heating steam discharged from the intermediate-pressure turbine;
- and
- a low-pressure turbine to be driven by the steam heated by the second reheater;
- wherein turbine stages of the intermediate-pressure turbine are designed such that the intermediate-pressure turbine discharges dry steam.
5 more elements
A nuclear power plant comprising:
- a nuclear steam generating system for generating steam;
- a high-pressure turbine to be driven by steam generated by the nuclear steam generating system;
- a first reheater for separating moisture from steam discharged from the high-pressure turbine and heating the steam;
- an intermediate-pressure turbine to be driven by the heat heated by the first reheater;
- a second reheater for separating moisture from steam discharged from the intermediate-pressure turbine and heating the steam;
- and
- a low-pressure turbine to be driven by the steam heated by the second reheater;
- wherein the intermediate-pressure turbine discharges dry steam.
5 more elements
A method of operating a steam turbine power plant comprising:
- a high-pressure turbine to be driven by steam generated by a steam generator, a first reheater for separating moisture from steam discharged from the high-pressure turbine and heating the steam, an intermediate-pressure turbine to be driven by the steam heated by the first reheater, a second reheater for heating exhaust steam discharged from the intermediate-pressure turbine, and a low-pressure turbine to be driven by the steam heated by the second reheater;
- said method comprising:
- separating moisture from and heating steam discharged from the high-pressure turbine;
- supplying the steam heated and dried by the first reheater to the intermediate-pressure turbine;
- making the steam supplied to the intermediate-pressure turbine expand such that the intermediate-pressure turbine discharges dry steam;
- heating steam discharged from the intermediate-pressure turbine by the second reheater;
- and
- supplying the heated steam heated by the second reheater to the low-pressure turbine.
5 more elements
Dependencies are inferred from the claim text.