The paper presents the innovative design of a mechanical seal installed on a Kaplan turbine for hydro power in south-west of France. The need for an alternative solution had come from end-user dissatisfaction in using braided packings. The mechanical seal type approach was in the context a logical route to consider. As the turbine situation did not allow any sliding of complete components around the main shaft, a split design was necessary. A standard loading device, such as a series of helical springs around the circumference, being inappropriate, the key element of the system ended up being an inflatable rubber profile positioned at the back of the stationary face.
展开▼
