Siemens Steam Turbines (SST)
SST-100 steam turbine for economical
production of heat and power Whether you need power generation for independent power production or for any industrial application, the SST-100 steam turbine offers you the flexibility, reliability and economy of operation you demand.
The SST-100 range: proven design for a wide range of applications The SST-100 is a single casing multi-stage steam turbine, providing geared drive to 1500 and 1800 rpm generators and packaged in a skid-mounted design. It represents a solution based on long experience of industrial turbines, coverin cov ering g industrial applications such as: – co coge gene nera rati tion on – industrial industrial power power plants for for e.g. sugar industry industry,, textile industry, steel works and mines.
Operational flexibility Back pressure or condensing turbines, where the steam path is adapted to the needs of the individual customer, provide an optimal solution when medium pressure and temperatur temperature e conditions are available. The blading is of highly standardized design, which is robust and proven. The single body turbine is designed for high thermo-flexibility,, permitting short thermo-flexibility shor t start-up times and rapid load changes. The rotor is made of solid forging or with forged discs shrink-mounted shrink-mounted on the turbine shaft and keyed. It is short and rigid, resulting in operation well below first critical speed, using babbittlined sliding type bearings to assure smooth and well-damped operation. The reduction gears are taken from the existing range of world class gear manufacturers and have proven high reliability and performance.
Central Portuguesa, Venezue Ven ezuela, la, 7 MW back pressure turbine for a sugar mill plant
Design features The SST-100 single casing package module is pre-designed for high standardization and short delivery times. It is a compact solution and utilization of selected proven components assures high reliability and easy maintenance. The turbine skid and gearbox / oil unit are fully assembled in the workshop before shipping to site. The pre-designed turboset enables early planning of turbine building layout, saving time for the customer.
Turboset with SST-100 steam turbine up to 8.5 MW
Power Generation
Reliability and efficiency from proven technology
Back pressure application Features of the SST-100 in back pressure application are:
SST-100 turbine variations are achieved by selecting from a number of pre-defined stages for incorporation into the standard design.
• Steam-driven emergency stop valve
Easy maintenance
• Double-seated control valves with hydraulic actuator
Our proven installation and maintenance concept lowers maintenance costs by enabling easy access to the installed components.
• Control stage 500 mm diameter with three sections • Up to six impulse stages • Rigid rotoroperation speed below first critical • Two journal sleeve bearings and one thrust tilting pad • Exhaust flange on side, bottom half of the casing
Condensing application The condensing turbine design is derived from the back pressure version. However, there are some design differences, for example: • There are up to seven impulse stages, including condensing stages • The exhaust casing is oriented downwards through the base frame or upwards, depending on the application
Steam turbine SST-100 mounted on base frame
• Diaphragm carrier for the last three stages
Back pressure configuration Rear bearing
Front bearing Drive end (gear coupling)
Servo motor
Steam inlet
Exhaust (on side)
Compact and flexible solutions
Typical layout for turboset with a SST-100 condensing steam turbine
SST-100 technical data 3
Power output.................up to .......8.5 MW Speed
up to .......7 500 rpm
2
1
Live steam conditions pressure .......................up to ........65 bar / 943 psi temperature.................up to ........480 °C / 896 °F
H
Exhaust steam conditions back pressure ...............up to ........10 bar / 145 psi condensing ..................up to.........1 bar / 14.5 psi All data are approximate and project-related.
L
4
3
2
1
5
W
Legend
Typical dimensions
1 Steam turbine
L
Length.....8 m / 26 ft
2 Speed reduction gear
W
Width.......3.7 m / 12.1 ft
3 Genereator
H
Height......3.4 m / 11.2 ft
4 Base frame 5 Concrete foundation
5
4
L
Features and Benefits Design features
Customer benefits
• Highly predefined design
• Rapid manufacturing
• Workshop assembly
• Short on-site erection
• Oil system integrated in base frame
• Compact – all oil piping within package
• Separation of oil and steam piping
• Increased safety, no leaks towards hot pipes
• Proven
• High reliability
• Compact design
• Low maintenance costs
Reference examples
SST-100 has been sold for a rich variety of applications around the world. The following references are typical examples of this versatility of application.
Cocelpa, Brazil, 8 MW condensing turbine for a pulp plant
Continental, Thailand, 3.5 MW condensing turbine for a petrochemical plant
Quality and experience in one product family Type
Steam Parameters
SST-100
65 bar 480 C
SST-200
80 bar 480 C
SST-300
120 bar 520 C
SST-400
120 bar 520 C
SST-500
30 bar 350 C
SST-600
140 bar 540 C
SST-700
165 bar 565 C
SST-800
140 bar 540 C
SST-900
165 bar 585 C
10
30
Output (MW) 50
70
130
150 +
°
°
°
°
°
Double Flow
°
°
°
°
SST-100 steam turbines are part of a modern range of Siemens steam turbines developed to meet the most demanding customer requirements for cost-efficient power generation and mechanical drive applications in power plants and industrial environments. This is achieved by using a highly modularized system of state-of-the-art components with well proven design features. Its development is based on experience accumulated during a century of steam turbine design, manufacturing and operation.
Dual Casing/Reheat Center Admission Single Casing/Non-Reheat
Dual Casing/Reheat
The SST range of our turbines cover the complete spectrum from 2 to 180 MW and are available in back pressure, condensing and extraction design. The table above shows the Siemens full range of industrial steam turbines and their most important parameters. Whether you need a generator drive for power generation or a mechanical drive for compressors, blowers and pumps just tell us your needs and together we can select the optimum turbine or turboset which is most suited to respond to them.
Published by and copyright 2005: Siemens AG Power Generation Freyeslebenstrasse 1 91058 Erlangen, Germany e-mail:
[email protected] www.siemens.com/powergeneration Siemens AG Power Generation Industrial Applications Wolfgang-Reuter-Platz 47053 Duisburg, Germany e-mail:
[email protected] www.siemens.com/powergeneration Siemens Industrial Turbomachinery Inc. 10730 Telge Road Houston, Texas 77095, USA Order No. A96001-S90-A198-X-4A00 Printed in Germany 1387 177480M DA 01052. Subject to change without prior notice. The information in this document contains general descriptions of the technical options available which do not always have to be present in individual cases. The required features should therefore be specified in each individual case at the time of closing the contract.
