Patent · US Active

Steam power plant turbine and control method for operating at low load

US9617874B2 · kind B2 · utility

0Cited by

11References

9Claims

0Family size

Assignee

GENERAL ELECTRIC TECHNOLOGY GMBH · CH

Inventors

Stephan Hellweg · Besigheim, DE
Volker Schüle · Leimen, DE
Manfred Bauer · Roßtal, DE

Key dates

Filing date	Jun 17, 2013
Grant date	Apr 11, 2017
Priority date	—
Expiry date	Nov 16, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01K13/02
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a system for effecting pressure control in a thermal power plant operated at low load connected fluidly in series, a relief conduit is disclosed herein. The relief conduit selectively transfers steam from a cold reheat conduit to the second extraction conduit. The plant further includes a boiler, a high-pressure turbine, an intermediate pressure turbine, a low pressure turbine, a main steam conduit for feeding steam from the boiler to an inlet of the high pressure turbine, a cold reheat conduit for feeding steam from an outlet of the high-pressure turbine through a reheat flow path in the boiler, and a first and second high pressure heaters. A first extraction conduit connects the cold reheat conduit to a first high pressure heater to transfer heat, and a second extraction conduit connects the intermediate pressure turbine to the second high pressure heater, to transfer heat.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.