1. Electrical aspect
2. Mechanical aspect
3. Hydraulic aspect
Uneven flow velocity and pressure distribution at the inlet and outlet of the water pump, pressure pulsation, liquid flow, deviation and detachment of the working fluid at the inlet and outlet of the pump, non rated operating conditions, and cavitation caused by various reasons are common causes of pump unit vibration. The sudden changes in pressure and water hammer in the water pipeline caused by dynamic transition processes such as pump start-up and shutdown, valve opening and closing, changes in operating conditions, and emergency shutdown in accidents often lead to vibration in the pump room and units.
4. Hydraulic and other aspects
Unreasonable or incompatible design of the inlet channel of the unit, improper submergence depth of the water pump, and unreasonable start-up and shutdown sequence of the unit can all deteriorate the inlet conditions, generate vortices, induce cavitation, or exacerbate the vibration of the unit and pump room. When starting a unit that uses a broken siphon vacuum cutoff, if the air in the hump section is difficult to carry and the siphon time is too long; The design of the tapping door for the unit that cuts off the flow is unreasonable, constantly hitting the tapping door seat with intermittent opening and closing; Uneven settlement or poor rigidity of the foundation supporting the water pump and motor can also cause vibration of the unit.
1. Electrical aspect
2. Mechanical aspect
3. Hydraulic aspect
Uneven flow velocity and pressure distribution at the inlet and outlet of the water pump, pressure pulsation, liquid flow, deviation and detachment of the working fluid at the inlet and outlet of the pump, non rated operating conditions, and cavitation caused by various reasons are common causes of pump unit vibration. The sudden changes in pressure and water hammer in the water pipeline caused by dynamic transition processes such as pump start-up and shutdown, valve opening and closing, changes in operating conditions, and emergency shutdown in accidents often lead to vibration in the pump room and units.
4. Hydraulic and other aspects
Unreasonable or incompatible design of the inlet channel of the unit, improper submergence depth of the water pump, and unreasonable start-up and shutdown sequence of the unit can all deteriorate the inlet conditions, generate vortices, induce cavitation, or exacerbate the vibration of the unit and pump room. When starting a unit that uses a broken siphon vacuum cutoff, if the air in the hump section is difficult to carry and the siphon time is too long; The design of the tapping door for the unit that cuts off the flow is unreasonable, constantly hitting the tapping door seat with intermittent opening and closing; Uneven settlement or poor rigidity of the foundation supporting the water pump and motor can also cause vibration of the unit.