Ring Gate as Turbine Emergency Shut-Down Device

by Wolfgang J. Wührer, Sulzer Escher Wyss, Ravensburg, Germany,
Herbert L. Grein, Sulzer Escher Wyss, Ravensburg, Germany,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

The ring gate, intially used as a regulating device in the early stage of the design of hydraulic turbines, has grown to a reliable emergency shut-down device. Incorporated in the hydraulic machines the ring gate offers substanial advantages such as powerhouse compactness, safety due to a selfclosing capability, and less overall losses. The requirements in connection with the hydraulic and mechanical design are multifarious and call for an interdisiplinary approach. As an example the 'SIR DAM' ring gate is described.



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