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www.siemens.com/energy Industrial Power SST-111 Steam Turbine Up to 12 MW
www.siemens.com/energy
Industrial Power
SST-111 Steam Turbine Up to 12 MW
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SST-111 Steam Turbine
The SST-111 is a multi-stage steam turbine with an inte-grated gearbox and is designed for the output range from 3 to 12 MW. The gearbox, designed for multi-casing design approach permits up to two controlled extractions with operation in various steam supply systems, as well as the possibility of including a reheat system to optimize efficiency.
The SST-111 embodies both efficiency and availability. The tried-and-true design concept of the SST-110 is char-acterized by a space-saving configuration, quick startup and cost-effective operation combined with the fluid mechanics design used in the Siemens multi-stage turbines.
The machine’s robust construction and cantilever rotor bearing result in fast start-up capability, enabling the machine to start up and achieve maximum output within seconds – even in cold condition.
Operation in the saturated steam regime enables utiliza-tion of extremely low residual steam flows, thereby gener-ating power with minimal technical effort.
As with all pre-designed steam turbines, the SST-111 is de livered as a complete machine, including the generator, control and monitoring equipment as well as the neces-sary auxiliary and supporting systems.
The SST-111 is suitable for use in decentralized power supply applications. Examples of customers who could benefit from it include municipal utilities and energy-intensive industrial plants, which generate their own power for production processes. Because of its flexible machine design, the turbine is suitable for many applica-tions, such as:
biomass power plants
waste and refuse incineration plants
small combined-cycle power plants (use of gas-turbine waste heat)
utilization of waste heat in industry
combined heat and power
concentrated solar power plants
Advantages of the SST-111
Unique cost-benefit ratio thanks to improved efficiency
– High efficiency / high power yield
– Optimum speed flexibility for high efficiency, optimum efficiency in the part-load range
– Attractive price
Flexibility
– Compact design, simple installation, small footprint
– Reheat system, controlled extraction and injection are possible
– Fast start-up capability, high availability, high efficiency at varying steam parameters (biomass)
– Simple adaptation to changed steam parameters (repowering etc.)
Proven “low-risk” design
– Based on the same tried-and-true concept of the SST-110
– Proven modular design parts and our own gearboxes
– Quick service response times
– Single-contractor machines, one contact person
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Technical Data Output of up to 12 MW Main steam pressure up to 131 bar(a) Main steam temperature up to 530° C Exhaust steam pressure: Condensation down
to 0.06 bar(a) maximum
Typical DimensionsLength: approximately 8 m, including generator Width: 4.0 m Height: 4.0 m
Features Fast start-up without preheating Saturated steam operation Condensing design Package design Oil supply system integrated into the
baseframe Nozzle-group control option available Compact configuration Pressure-controlled extraction and/or injection High pressure/low pressure arrangement ATEX design available as an option
Turbine Design
The turbine casings are bolted to the bearing housing kinematically so as to maintain centricity and permit unrestrained thermal expansion. The vertical casing joint facilitates access to the impeller. The admission valve with combined control and stop-valve function is opened or closed by a flanged-on, pneumatically-controlled servomotor.
Gearbox The integrated gearbox is manufactured in-house and is tailored to the turbine design. The gearbox casing contains the plain bearings that are supplied with pressurized lube oil and the gear wheels. The ground gear teeth, together with optimization of the contact pattern during installa-tion, ensure smooth running behavior at low noise levels.
We are thus able to achieve short lead times and optimum matching to both the turbine and the customer’s operat-ing mode.
Oil System The oil supply system is integrated into the baseframe and consists of an electric oil pump for startup, a mechan-ically-driven main oil pump, a replaceable filter and an air-cooled oil cooler.
Baseframe The SST-111 steam turbine is delivered completely assembled as a pre-tested package unit. The turbine, gearbox and oil supply system are mounted on a shared baseframe.
The compact, integrated configuration permits outputs of up to 12 MW under limited spatial conditions.
Comprehensive Service
Siemens offers an extensive portfolio of service solutions and products for the SST-111 to ensure efficient plant operation. This service encompasses:
Installation and commissioning
Training of customer personnel
Assessment of the condition, maintenance, inspection and overhaul
Modification, upgrading and optimization
Provision of spare parts
Condition diagnostics
Published by and copyright © 2012: Siemens AG Energy Sector Freyeslebenstrasse 1 91058 Erlangen, Germany
Siemens AG Energy Sector Oil & Gas Division Wolfgang-Reuter-Platz 47053 Duisburg, Germany
Siemens Energy Inc. 10730 Telge Road Houston, Texas 77095, USA
Siemens Turbomachinery Equipment GmbH Heßheimer Str. 2 67227 Frankenthal (Pfalz)
For more information, contact our Customer Support Center. Phone: +45 49 21 14 00 Fax: +45 49 21 52 25 (Charges depending on provider) E-mail: [email protected] www.siemens.com/energy
Oil & Gas Division Order No. E50001-G410-A118-X-4A00 Dispo 34806, c4bs 7479, bdk 120061, P WS 0512
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All rights reserved.Trademarks mentioned in this document are the property ofSiemens AG, its affiliates, or their respective owners.
Subject to change without prior notice.The information in this document contains general descriptions ofthe technical options available, which may not apply in all cases.The required technical options should therefore be specified in thecontract.
