Steam Turbine SST-040
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Steam Turbine SST-040
The newly developed predesigned steam turbine SST-040 is a generator drive specially designed for the 75-300 kW power range. This favorably priced turbine features a simple, extremely compact design, short start-up times and a high degree of operational reliability.
Application area of the SST-040:
|Power output||75 - 300 kW(e)|
|Inlet pressure||2 up to 40 bar (a)|
|Inlet temperature||dry saturated steam up to 400 °C|
|Exhaust pressure||max. 7 bar (a) up to 0,1 bar (a) condensation|
|Dimensions||approx. 1,5 x 2,5 x 2 m (B x L x H)|
|Weight||approx. 4.500 Kg|
The SST-040 is a single-stage impulse turbine. The inlet steam flow is directed onto the turbine rotor blades, where mechanical power is generated when the steam flow direction changes. The resulting impulse spins the rotor, and the power is transferred from the turbine via the gear to the generator.
The turbine casing is centrically slide-mounted on the bearing casing to permit free radial movements under influence of different temperatures. The vertical split allows easy access to the rotor disk. The quick acting inlet valve for steam control and quick-stop is opened and closed by a pneumatically controlled servomotor. The casing is thermally insulated by zinc-coated mineral wool lagging.
The design of the integral gear, manufactured in our Siemens workshop, was chosen to fit perfectly to the design of the turbine. The gear box includes the pressure-lubricated sleeve bearings and the gearwheels. Ground gearing and tooth contact pattern adjustment during assembly guarantee extremely low vibration levels and low noise.
The integrated oil supply consists of an auxiliary oil pump with electric start-motor, a mechanically driven main oil pump, an exchangeable duplex oil filter and air-cooled oil cooler.
A highly efficient low-voltage motor is used for power generation in generator mode. Optimally adjusted to a particular power range, mechanical power is converted into electrical power. For protection, thermocouples or electronic resistance temperature detectors (RTDs) monitor the temperature of the bearings and windings.
Monitoring and power circuit breaker
The control and protection unit covers all necessary monitoring functions. A clearly arranged 12-inch touch panel shows all relevant data. For data transmission to an existing external control system, the control and protection unit is equipped with a Profibus interface. The circuit breaker with motor drive and subvoltage release establishes the connection with the power network.
The SST-040 steam turbine is delivered as a pre-tested package unit with turbine, gear, generator, oil unit, control and protection unit as well as circuit breaker, built upon a base frame. The lightweight turbine package has a space requirement of approx. 1.5m x 2.5m x 2m (breadth x length x height) and a weight of around 4,500 kg.
Our processes in the areas of sales, development, production, commissioning and service are specially planned and structured so that we can install the unit in the shortest possible time. The SST-040 turbogenerator package is completely approved and installed in the Siemens test bay, enabling easy, problemfree installation on a base plate or small concrete foundation. The installation and the connection to the steam pipes and to the electrical grid can be carried out by our customers themselves with the help of our guidelines. A Siemens technician will put the turbine into operation a few days later. The complete unit is designed to be simple and reliable, so that power generation can normally begin only six months after placing the order with Siemens. Customer Service is for us more than just a concept, it is a way of life. If you have any questions about your unit, modification requirements or if you should experience an operational disturbance, Siemens Frankenthal is at your service around the clock with its hotline +49 171 51 82 610 – wherever the location of your unit.