Bearing Application: Power Station
Langkampfen power station was put into service in November 1998. The run-of-river power plant is located between the two Inn dams at Kirchbichl and Ebbs-Oberaudorf. Two sets of machinery are installed in the interior of the power station. They each consist of a Kaplan bulb turbine and a synchronous generator. With a total machine output of 31.5 megawatts, a drop height of 8.3 meters and a water flow rate of up to 500,000 liters per second, Langkampfen power station generates up to 169 gigawatt hours of electric power. Together with TIWAG and the turbine manufacturers, GGB Bearing Technology designed not only the outer but also the inner spherical guide vane bearings to be 100% maintenance-free, thus meeting the requirement that the design of the components should be particularly environment-friendly. GGB recommended its GGB-DB™ and GGB-CSM® plain bearings. GGB-DB™ is a self-lubricating bearing material system made of bronze and special graphite or PTFE solid lubricant inserts.
GGB-CSM® plain bearings are made of a special graphite-based, sinter bronze alloy. Both materials are characterized by a high load-bearing capacity and wear resistance as well as excellent corrosion resistance. In the spherical plain bearing version, the inner ring of the fixed bearing, or the outer ring in the case of a floating bearing, is made of high-quality stainless steel. Here, TIWAG has already assumed a pioneering role in its use of biologically degradable components and media. The plain bearing solutions provided by GGB have been in operation since 1998, to the utmost satisfaction of TIWAG, and are still in use.
- Josef Pfeil, Engineer TIWAG - Tiroler Waserkraft AG