PulseGuard offer surge alleviation for Centrifugal Pumps so that on start-up the force from the centrifugal does not have to overcome the resistance of the total mass in the system to be accelerated. Our WaveGuard dampers also address the high frequency pulsation from the Centrifugal Pump "vane pass" speed.
A centrifugal pump is a rotodynamic pump that uses a rotating impeller to increase the pressure of a fluid. Centrifugal pumps are commonly used to move liquids through a piping system. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber (casing), from where it exits into the downstream piping system. Centrifugal pumps are used for large discharge through smaller heads.
A centrifugal pump works by converting kinetic energy into potential energy measurable as static fluid pressure at the outlet of the pump. With the mechanical action of an electric motor or similar, the rotation of the pump impeller imparts kinetic energy to the fluid through centrifugal force. The fluid is drawn from the inlet piping into the impeller intake eye and is accelerated outwards through the impeller vanes to the volute and outlet piping. As the fluid exits the impeller, if the outlet piping is too high to allow flow, the fluid kinetic energy is converted into static pressure. If the outlet piping is open at a lower level, the fluid will be released at greater speed.
PulseGuard damper types used with centrifugal pump systems: