Abstract
The Mitsubishi Heavy Industries Group has successfully developed a new generation of high-efficiency steam turbines. The turbine is based on a reliable 33.7inch Low pressure end blade that has been in operation for many plants. In addition, the turbine performs high efficiency because that applied the latest analysis technology, which has been established based on the development technology and extensive operational experience accumulated over many years. Furthermore, the turbine is designed for sideward exhaust that discharges exhaust steam in the horizontal direction, making it possible to reduce the base height of the turbine as small as that of the axial exhaust. This makes it possible to significantly reduce building costs compared to conventional downward exhaust. In addition, performance and reliability have been verified under the same conditions as those of actual machines using the demonstration test facilities owned by our company. Regarding the last stage rotating blade, the pressure and velocity field were assessed by traverse measurement and blade vibration stress was assessed by strain gauge measurement. The predictions of the pressure and velocity field of the last stage rotating blade were in well agreement with verification test results.
