PREVENT STRUCTURE TO WATER-HAMMER THAT INCLUDES UNDERWATER PUMP

摘要

The invention of the underwater motor pump with water hammer prevention measures, the primary purpose of the invention is a water hammer but configured to prevent the operation, when provided with a bypass valve in an underwater motor pump side of the discharge pipe there is a reverse flow of the fluid to be able to change the line reverse direction, so that also the rotational inertia of the flywheel to maintain the shaft the flow of the fluid having to be provided with care not to degrade rapidly. ; The main configuration of the present invention for achieving the above object and bar to the housing 11 for the motor, and with an upper bracket 12, and the shaft 13 of the housing, the shaft and the housing The rotor 14 and the motor portion composed of a stator 15 having a 10, and the impeller with coarctation (21) on the shaft (13) extending down to the motor unit, the suction port holding fixed under the casing (22a) and a discharge port (22b) consisting of a pump portion casing 22 having a 20, and a discharge port of the casing 22 with the pump portion (22b) and the discharge pipe 23 is provided between the by-pass valve unit with 30 is provided with, or after extending the shaft 13 out of the upper bracket 12, is provided with a fly-wheel unit 40 provided on the extension portion, or the by-pass valve unit and fly characterized in that all provided with a wheel unit.