In the use of mechanical equipment for many years, there will be more or less such problems. This is normal for ordinary people, but from a professional point of view, this is not the case.
It is like a fire pump. After a long time of use, some pump bodies or impellers will have small holes with different degrees of pits. Normal people think that this is the so-called equipment depreciation.
In fact, this is a physical phenomenon that has become a cavitation phenomenon of fire pumps.
So, how to make the fire pump fire pump cavitation come later? Here, in addition to the use of personnel to do things, there are things that manufacturers need to do.
What should the fire pump manufacturer do?
First, improve the cleaning degree of the pump flow channel;
Second, increase the diameter of the impeller inlet;
Third, reduce the speed of the pump to reduce the internal pressure of the pump;
Fourth, for fire pumps operating under severe conditions, in order to avoid cavitation damage, manufacturers should develop cavitation resistant materials for them.
What do fire pump users do?
First, reduce the installation height of the pump;
Second, reduce the resistance of the suction line;
Third, reduce the temperature of the transport liquid to reduce the vaporization pressure;
Fourth, avoid the use of valve throttling on the inlet pipeline;
Fifth, once cavitation occurs, the flow rate is reduced and the speed is reduced at the first time.