A removable tail water cone pipe that is used for tearing open under mixed -flow runner

The utility model discloses a removable tail water cone pipe that is used for tearing open under mixed -flow runner, belong to hydraulic turbine equipment technical field, its technical essential includes the last tail water cone pipe of being connected with hydraulic turbine runner, goes up tail water cone pipe lower extreme and is connected with lower tail water cone pipe, and lower tail water cone pipe lower extreme is connected with the base of establishing in concrete foundation, be equipped with telescopic machanism between upper and lower tail water cone pipe, it is equipped with seal structure to be connected the inner face in position at lower tail water cone pipe and base, be equipped with into manhole on lower tail water cone pipe lateral wall, be equipped with the mount pad onadvancing manhole outlying lower tail water cone pipe, be equipped with on the mount pad and advance the mandoor that the manhole suited, the mandoor by with mount pad matched with planking, distribute on the planking inside