A system having a motor coupled to and powering a pump for pumping a liquid, the motor being configured to start by receiving electric power from a power source, a turbine mounted in line with the pump within a conduit where flow of the liquid causes rotation of the turbine, the turbine being associated with a generator, and, an automatic transfer switch configured to monitor a power output of the generator and, when the power output is sufficient for the motor to run, to provide the power output to the motor and to disconnect the power source from the motor.

A turbo pump includes: an impeller which pressurizes liquid, a turbine disk at which a blade cascade is provided; a shaft which connects the impeller and the turbine disk; a bearing which rotatably supports the shaft, and a housing which accommodates the impeller, the turbine disk, the shaft, and the bearing; a seal part which is provided between the bearing and the turbine disk; a slinger which is disposed between the bearing and the seal part and has a disk which is fixed to the shaft, and a plurality of wing parts which are provided on the seal part side of the disk; and a partition wall which partitions the inside of the housing into a pressure reduction chamber in which the wing parts of the slinger are disposed, and a bearing accommodation chamber in which the bearing is accommodated, the pressure reduction chamber and the bearing accommodation chamber being connected to each other through a clearance flow path.

A cryogenic liquid turbine is provided, wherein, impeller end of the rotor and nozzle assembly are received into cavity of volute, and main part of the volute is put into perlite cold box; insulation pad is used between the volute and machine housing to insulate heat; impeller outlet is connected to diffuser pipe. A nozzle assembly is connected to the machine housing by a nozzle compression flange; a nozzle compression plate adjusts a compactness of nozzle vanes by a disc spring; a nozzle turntable is connected on a nozzle chassis, and adjusts the nozzle vane stagger angle by adjusting mechanism passing through the volute; impeller shroud side seal is axially fixed on the nozzle compression flange, and a shaft seal is axially fixed to a seal gas part; the seal gas part and an oil seal are axially fixed to the machine housing by a bolt.

Provided is a water pump capable of pumping coolant by rotating an impeller, and more particularly, to a water pump that solves a problem caused by an impeller being lifted due to a pressure difference generated during pumping.