Siemens Steam Turbines
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Siemens Steam Turbines
Industrial Steam Turbine for an power output range of up to 150 MW
Generator or mechanical drive – the Siemens SST-600 is configured for many possible applications. The flexible SST-600 packaging fits a broad range of customer needs. It can be designed for optimum back-fitting to an existing process, e.g. when a municipal utility is modernized. Or, when space is limited, it can be adapted as a compact steam turbine package with a small oil piping system, e.g. as a boiler feedwater pump drive. Or it is also well suited where high-efficiency steam turbines are demanded with best-in-class blading and minimized losses. Siemens SST-600 is the right answer to meet all of these different needs.
We deliver a standard steam turbine generator set including the SST-600 (with or without gearbox), a generator, oil system, piping and instrumentation and control system. The standard package can be extended to include a condenser, condensing plant or pre-heating system. Multi-casing solutions are also possible, enabling for example combined heat and power plants to easily respond to seasonal changes. In summer, when less district heating is needed, one turbine can be taken off the multi-casing steam turbine train.
The SST-600 is also an efficient and economic mechanical drive. Since the 1970s, hundreds of projects have been successfully implemented all over the world using the SST-600 to directly drive everything from the smallest boiler feed water pump as reliably as the biggest compressor even in the most complex processes. The SST-600 complies with regulations including the API standard.
The SST-600 is a single-casing steam turbine designed for operation within a speed range of 3,000 to 18,000 rpm for generators or mechanical drives up to 150 MW. The turbine is used for both condensing and backpressure applications, either geared or directly coupled. The customized steam path is arranged according to the customer’s needs. The SST-600 with its reliable and flexible design is available with axial or radial exhaust.
Design enhancements provide:
Typical applications for the SST-600
|Power output||up to 150 MW|
|Turbine speed||3,000 to 18,000 rpm|
|Controlled extractions (up to 2)
||Pressure, ext. valve ≤ 72 bar / 1,044 psi
Pressure, int. valve ≤ 55 bar / 798 psi
Temperature ≤ 480°C / 895° F
|Uncontrolled extractions (up to 6)||Pressure ≤ 85 bar / 1,233 psi|
|Live steam inlet pressure||≤ 165 bar / ≤ 2,393 psi|
|Live steam inlet temperature||≤ 565°C / ≤ 1,050° F|
||Back pressure ≤ 80 bar / 1,160 psi
Condensing ≤ 1.0 bar / 15 psi
District heating ≤ 3.0 bar / 43 psi
All data are approximate and project-related.
Typical dimensions of the SST-600:
Length (L): 19 m / Width (W): 6 m / Height (H): 5 m
Siemens commissions first oil-free steam turbine
Siemens successfully operates an oil-free steam turbine with an active magnetic bearing: The SST-600 operates as the boiler feedwater pump drive with 5700 rpm in one of Vattenfall’s German combined heat and power plants.
The application of magnetic bearings is particularly recommended to customers with stringent safety requirements and high fire hazards or stringent environmental requirements, such as industrial sites situated in drinking water catchment areas. Also significant is the increase in efficiency. The noncontacting magnetic bearings cause no losses due to viscous friction as in hydrodynamic bearings.
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