Impeller device of impulse turbine

The utility model relates to the technical field of water turbines, and provides an impeller device of an impulse water turbine, which comprises a rotating shaft, a rotating disc sleeved on the rotating shaft and a plurality of water buckets distributed along the circumferential direction of the rotating disc, the periphery of the rotating disc is provided with limiting grooves in one-to-one correspondence with the water buckets, the root of each water bucket is provided with a limiting block, and the limiting blocks are embedded in the limiting grooves. A locking bolt used for connecting the limiting block and the rotating disc is arranged on the side wall of the rotating disc and arranged in the axial direction of the rotating disc. Centrifugal force generated in the rotating process of the impeller and stress borne by the roots of the water buckets can be introduced into the rotating disc, so that the stress condition of the roots of the water buckets is improved, the stability of the water buckets during