Apparatus and method for alleviating and preventing cavitation surge of water supply conduit system

An apparatus for suppressing a cavitation of a turbo pump, comprising:

• a turbo pump for delivering a liquid;
• a first damping device configured to repeatedly increase and reduce a pressure of the liquid upstream of the turbo pump so as to damp an amplitude of a cyclical pressure fluctuation of the liquid upstream of the turbo pump;
• and
• a second damping device configured to repeatedly increase and reduce a pressure of the liquid downstream of the turbo pump so as to damp an amplitude of a cyclical pressure fluctuation of the liquid downstream of the turbo pump, the first damping device and the second damping device being operable independently of each other, wherein the liquid downstream of the turbo pump is not returned to an upstream side of the turbo pump,
• wherein each of the first damping device and the second damping device comprises a piston and a cylinder, and
• wherein the apparatus further comprises a piston braking device configured to stop motions of the piston of the first damping device and the piston of the second damping device, and further comprises a balance-position recovering device configured to recover a balance position of at least one of the piston of the first damping device and the piston of the second damping device.