Siemens Steam Turbines
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Siemens Steam Turbines
Industrial steam turbine for an output range of up to 250 MW
The SST-800 is a single casing steam turbine with center steam admission and reverse steam flow inner casing, designed for a direct coupled generator or mechanical drive. Power output with dual casing solution is up to 250 MW.
The highly customized turbine provides for an outstanding efficiency, fast start-up times and high reliability and availability. It meets all customer requirements for economic installation and operation and provides an excellent flexibility for complex industrial processes. A double or even multicasing solution can also be provided when according customer requirements are given.
The SST-800 steam turbine can be used for both condensing and back-pressure applications. It is built up from predesigned modules combined to a single unit for optimum matching of the required parameters. Turbine auxiliary systems are also pre-designed into modules covering the complete range of turbine sizes. The SST-800 turbine is equipped with impulse control stage and reaction blading fixed in blade carriers. Furthermore the turbine is offered with throttle controlled inlets. The turbine can be arranged on a foundation or as a package. The SST-800 steam turbine is in accordance with DIN or API standards.
The three main modules (inlet, intermediate and exhaust section) are available in various sizes and configurations. The turboset can be configured to meet any project-specific requirements. For ground-level installation the turbine is equipped with axial or upward exhaust. Where space is restrictive, an arrangement with downward exhaust can be selected.
The inlet area comprises control valves, emergency stop valve, internal casing with blades and external casing. The blades in the inner casing are structured to enable steam to flow in the opposite direction toward the middle zone. The middle zone can be configured for direct flow and for controlled or uncontrolled extraction. The exhaust section is available in different sizes and orientations (axial, upward or downward).
Features such as a horizontal casing split or the independently accessible bearings ensure easy and rapid maintenance. Additionally, the guide blade carriers enable easy maintainability or further modifications of the steam path. Stop valves and steam strainers as well as control valves are accommodated in the steam chest and can be removed without dismantling the piping.
In a nutshell
|Power output||up to 250 MW, 50 or 60 Hz|
|Turbine speed||3,000 or 3,600 rpm|
|Inlet steam pressure||up to 165 bar / 2,395 psi|
|Inlet steam temperature||up to 565°C|
|Uncontrolled extractions||up to 7, at various pressure levels|
|Controlled extraction (single or double)||pressure: up to 72 bar / 1,044 psi|
All data are approximate and project-related.
Typical dimensions of the SST-800
Length (L): 20 m / Width (W): 8.5 m / Height (H): 6 m
Customer Support Center
Phone: +49 180 524 70-00