TSN79 said:Cavitation in pumps is a major problem. How can I be sure to minimize the damage it does? Is it correct that the worse case is a pump that gets much less flow and resistance that it can handle? These are not very big pumps, none more than 10 l/s.
Cavitation in pumps is the formation and subsequent collapse of vapor bubbles within a liquid due to rapid changes in pressure. This can result in damage to the pump and reduced flow efficiency.
Cavitation occurs when the pressure in the pump drops below the vapor pressure of the liquid, causing the liquid to vaporize. As the liquid moves through the pump and pressure increases again, the vapor bubbles collapse, creating shockwaves that can damage the pump's components.
Cavitation can cause damage to pump components such as impellers, causing them to wear down or break. It can also lead to decreased flow efficiency, as the collapsing bubbles create resistance and disrupt the smooth flow of liquid through the pump.
Cavitation can be minimized by ensuring that the pump is operating at the proper pressure, avoiding sudden changes in flow or pressure, and using materials and designs that are resistant to cavitation. Regular maintenance and monitoring of pump performance can also help prevent cavitation.
Some common methods for reducing cavitation damage in pumps include using materials such as hardened steel or ceramic for pump components, adjusting the pump's operating conditions to avoid sudden changes in pressure, and installing anti-cavitation devices or coatings to help reduce the formation of vapor bubbles.