New line of single-stage steam burbines
A new line of single-stage steam turbines provides what the maker calls a rugged and versatile low-horsepower turbine that’s designed to be equally suited for new or retrofit applications.
For pump drive applications, as well as fan, and generator-drive services, the 400RT series turbines offer design features that help make them easy to install and maintain.
The horizontal model is available in sizes ranging from 1 hp (0.75 kw) to 600 hp (450 kw) with pressures to 700 psig (48 bar) and temperatures to 825º F. (440º C.). Units range in weight from 1,750 lb (794.5 kg) to 1,850 lb (839.9 kg).
The vertically configured models are designed to meet the broad range of installation requirements, the company says.
The lubrication system of the steam turbine makes it possible to operate the unit at higher speeds and temperatures without an external lubrication system. By automatically providing flood, splash, and mist lubrication when required, the Idealube system requires no filters or coolers, and uses less water than forced feed lubrication, the firm notes.
The dual exhaust capability of the new turbines allows equipment operators to change out an older unit and use existing piping to couple with either side of the new turbine.
The exhaust outlets are symmetrically located and can be used individually or jointly, as required.
The turbines are designed with solid modeling, finite element analysis, proprietary rotor dynamics, and stress-analysis software. The low-cost turbines use state-of-the-art components including advanced seals, casings, and nozzles. The firm says its metallurgy, machining, and fabrication help ensure that the 400RT is built to meet extreme usage demands of API operations
Turbines feature standardized frames. Each unit is designed with the same wheel size, allowing the company to replace existing turbines with a single frame size. The monolithic wheel design is standardized and includes stainless steel milled style blading, metallurgically combined with alloy steel wheels.
Source: Dresser-Rand, Box 560, Olean, NY 14760.
