Reheat Steam Turbines

A comprehensive portfolio of steam turbines designed for a wide range of reheat applications and for the highest inlet steam conditions.

Reheat Steam Turbines

​Ansaldo Energia reheat steam turbines portfo​lio includes machines from two to five cylinders, capable of meeting a wide range of steam cycles, site conditions and operating modes for several applications, both in 50 and 60 Hz market, such as:

  • combined cycles power plants
  • fossil fired steam power plants​
  • cogeneration power plants
  • solar plants

Reaction technology for maximum efficiency, single bearing for optimum dynamic behavior and 3D stationary and rotating blades by a robust and highly damped design are common figures for both reheat and non reheat turbines.

Different size last stage blade of coupled or free standing design are suitably selected for air or water cooled condenser.

Easy access to maintenance activities is ensured by compact overall dimensions.

Synchro-Self-Shifting (SSS) clutch is available for connection to the generator for single shaft applications

​For smaller ratings, where a single flow exhaust is sufficient, the design concept is based on two cylinders, the natural solution for combining high efficiency and compactness: an High Pressure (HP) section and a Combined IP/LP section in opposite flow arrangement with single flow exhaust.

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2
HP section
  • Double casing design
  • Inner casing halves held together by shrink rings
  • Full arc or control stage admission
  • Shipped assembled for fast installation
IP/LP section
  • Combined IP/LP section in opposite flow arrangement with single flow exhaust
  • IP section double casing design
  • LP axial exhaust for low level installation or, alternatively, downward exhaust
  • Shipped assembled, with the exception of the bigger low pressure sections


For larger ratings, the design concept is based on three or more cylinders, suitable for the highest inlet steam conditions: an High Pressure (HP) section, an Intermediate Pressure (IP) section and one or more double flow Low Pressure (LP) sections depending on exhaust conditions.

1
2
3
HP section
  • Double casing design
  • Inner casing halves held together by shrink rings
  • Full arc or control stage admission
  • Possibility of Overload valve for additional load reserve at constant pressure in fossil-fired cycles
  • Shipped assembled for fast installation
IP section
  • Double casing design
  • Single or double flow design
  • Optional extraction (controlled or uncontrolled) in case of cogeneration applications
  • Shipped assembled for fast installation
LP section
  • Double casing design
  • LP side exhaust for low level installation as an alternative to the conventional downward exhaust

For more detailed information about the product

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