The invention relates to the technical field of generators, and discloses a stall
cut-off protection device for a hydro-generator. The stall
cut-off protection device comprises a shell, a water inlet
pipe is fixedly connected in the shell, a direct illuminating lamp is fixedly connected in the shell, a photosensitive
assembly is fixedly connected in the shell, a gear is rotatably connected in the shell, a toothed bar is slidably connected in the shell, a connecting rod is rotatably connected outside the toothed bar, and a rotating rod is rotatably connected to the end, away from the toothed bar, of the connecting rod. Through mutual cooperative use of the shell, the water inlet
pipe, the direct illuminating lamp, the photosensitive
assembly, the gear, the toothed bar, the connecting rod, the rotating rod, a sealing plate and a sleeve rod, after a
water turbine stalls, through automatic operation of mechanisms, the effect of
water turbine stalling automatic protection can be achieved, the situation of long-time overload operation of the
water turbine is further avoided, internal accessories of the water
turbine are protected, the service life of the water
turbine is prolonged, and the manual maintenance cost is reduced.