Straflo Turbine

A Straflo turbine is an axial hydropower turbine distinguished by placing its generator outside the water channel entirely, connected instead to the outer rim of the runner rather than sitting inline with the flow the way a bulb turbine generator does. Positioning the generator at the runner periphery keeps it out of the water passage, which can simplify sealing and maintenance compared with a design that houses the generator inside the flow. Like the bulb turbine it belongs to the family of low head axial turbines used at run of river and tidal generating stations, differing mainly in where the generator sits relative to the water passing through the machine.