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The Kaplan turbine is a propeller-type water turbine which has adjustable blades. It was developed in 1913 by Austrian professor Viktor Kaplan, who combined automatically adjusted propeller blades with automatically adjusted wicket gates to achieve efficiency over a wide range of flow and water level.
An apparatus and method for manufacturing cablan turbine blades by electroslag casting.
This application discloses an apparatus and method for manufacturing Cabran-type turbine blades using electroslag casting, belonging to the field of electroslag casting. A free electrode is disposed in the flange area (including the transition area) and arranged between the guide electrodes of a flexible electrode casting system. The cross-sectional profile of the free electrode is adapted to the cavity of the flange area. The free electrode is held in place by a clamping mechanism to maintain its position or move vertically. For the electroslag casting process of turbine blades with a composite cross-section of "blade + flange," this application solves the problems of electrode transition and consumable electrode design in electroslag casting by introducing a dedicated free electrode for the flange area and coordinating with the flexible electrode casting system for partitioned filling. This enables the manufacture of Cabran-type (through-flow and axial-flow) turbine blade castings, i.e., castings with three-dimensional curved surfaces and large cross-sectional area variations, using electroslag casting, thus expanding the application scope of electroslag casting.
Owner:SHENYANG SHENGHUA SPECIAL FOUNDRY CO LTD