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US 9,719,378 B2Granted
Method and apparatus for controlling moisture separator reheater
AssigneeGeneral Electric Company
InventorsSteven Craig Kluge, Michael James Molitor
Life of this patent
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Abstract
A system and a method are provided that may be used to control the temperature of steam being reheated by a moisture separator reheater (MSR). One embodiment provides a system including a steam turbine, a moisture separator reheater coupled to the steam turbine, and a controller programmed to control a temperature of steam leaving the moisture separator reheater based at least in part on sensor feedback. The controller is programmed to facilitate substantially smooth linear temperature ramping.
Claims11
A system comprising:
- a shaft;
- a main steam source configured to output main steam;
- a high pressure steam turbine configured to:
- receive the main steam from the main steam source;
- and
- output exhaust steam after using the main steam to rotate the shaft;
- a moisture separator reheater configured to:
- receive the main steam from the main steam source;
- receive the exhaust steam from the high pressure steam turbine;
- and
- output thermally enhanced steam by using the main steam to heat the exhaust steam;
- a low pressure steam turbine configured to:
- receive the thermally enhanced steam from the moisture separator reheater;
- and
- rotate the shaft using the thermally enhanced steam;
- and
- a controller programmed to:
- determine measured temperature of the thermally enhanced steam;
- and
- control supply of the main steam to the moisture separator reheater based at least in part on the measured temperature to facilitate substantially smooth linear ramping of temperature of the thermally enhanced steam.
17 more elements
A power plant comprising:
- turbine-generator control system configured to:
- control supply of main steam from a main steam source to a first steam turbine in the power plant;
- control supply of thermally enhanced steam from a moisture separator reheater in the power plant to a second steam turbine in the power plant;
- and
- control supply of the main steam from the main steam to the moisture separator reheater based at least in part on an electronic feedback signal received from a sensor to facilitate smooth linear ramping of temperature of the thermally enhanced steam output from the moisture separator reheater to the second steam turbine, wherein the sensor is configured to determine a measured temperature at an outlet of the moisture separator reheater, the sensor is configured to indicate the measured temperature using the electronic feedback signal, and the moisture separator reheater is configured to generate the thermally enhanced steam using the main steam.
2 more elements
Dependencies are inferred from the claim text.