STEAM TURBINES

STEAM TURBINES Efficient, flexible and reliable machines Steam turbines are the foundations on which Ansaldo was built: the Company was established in 1853 to support to the development of the then-flourishing steam locomotive industry. Ansaldo Energia long-standing experience on steam covers the design, manufacturing and installation of steam engines: the overall unit amount is about 700 worldwide with a total capacity of nearly 100 GW. Today’s Ansaldo Energia steam turbine portfolio has been developed for application in most power generation technologies, from traditional fossil combustion...

Combined Cycle, Fossil, Cogeneration Combined Cycles, Fossil, Solar Combined Cycle, Fossil, Cogeneration Combined Cycle, Fossil, Solar Small Modular Reactor (SMR) Steam Turbines portfolio Efficient and flexible Reheat steam turbines increase efficiency by returning partially-expanded steam to the steam generator for reheating before feeding it back to the turbine. The Ansaldo Energia reheat steam turbines portfolio includes machines from two to five cylinders, capable of covering a wide range of steam cycles, site conditions and operating modes. For small ratings, the design concept is based...

Advanced technology features The design reflects the following distinctive advanced technology features: • 3D stationary and rotating blades are based on reaction robust design, manufactured from bar stock with airfoil integral with the dovetail and covers • Shrink rings on the high-pressure inner casing allowing compact and uniform shape for superior thermal flexibility and cycling capability • Single bearing design, with bearings directly sitting on the foundation, ensuring optimum rotor behavior and compact overall dimensions • Welded rotors for higher thermal flexibility and optimum material...

NON REHEAT Compact and reliable Non-reheat turbines are the solution which best suits the needs of industrial plants and small utilities. The Ansaldo Energia non-reheat steam turbines portfolio includes machines from one to three cylinders, capable of covering a wide range of steam cycles, site conditions and operating modes. For small ratings, a compact single cylinder machine, consisting of a combined high-pressure/low-pressure section is the natural solution. For higher ratings, the design concept is based on two or more cylinders: a high-pressure section and one (or more) double-flow low-pressure...

Small non reheat CC, Condensing or backpressure, Cogeneration Medium and Large non reheat CC Cogeneration Steam parameters Single cylinder with single flow exhaust Two or more cylinders with double flow LP section(s) MT20: non-reheat combined cycle application. Energy from the heat of the earth Ansaldo Energia’s first turbine-generator units driven by geothermal steam went in operation in Larderello (Italy) in 1911, powering what is considered the first geothermal power plant in the world – a milestone in the history of renewables. Current Ansaldo Energia portfolio is based on impulse technology...

GT: geothermal steam turbine. Advanced technology features The design reflects the following distinctive advanced technology features: • Impulse technology with new generation of airfoil and sealing • Admission steam valves are of butterfly type • Special materials are used for rotor and blades, in order to minimize the impact of salt deposits and acid attach on the reliability of the fleet • A large selection of last stage blades, ranging from 20’’ to 31’’ are available to match at best the proper steam characteristic of the specific geothermal field • Downward, upward, axial or lateral different...

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