Modern steam turbines of the author’s company are based on advanced technology such as high efficiency seals, 3D blading, single inner cylinders, and advanced materials. These technologies result in a compact opposed-flow HP/IP combined cylinder design with high long-term efficiency, reliability, and availability. This paper will illustrate the features, benefits, and operational experience of large steam turbines with advanced technologies using an opposed-flow HP/IP cylinder. The paper will also address the relative performance of this type of steam turbine against its predecessors. Specific examples will be examined: 350 MW fossil units in the Asian market, a typical 250 MW combined cycle steam turbine in the American market, a 700 MW three-cylinder class design for conventional steam plants developed for the global coal market, and a 600 MW steam turbine upgrade.

Volume Subject Area:
Steam Turbines and Generators
Topics:
Advanced materials, Coal, Combined cycles, Cylinders, Design, Flow (Dynamics), Reliability, Steam turbines, Thermal power stations, Turbines
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Copyright © 2005
 by Siemens Westinghouse Power Corp.
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