What is the cause and effect of pump vibration
One of the common issues faced by a water pump, after continuous functioning, is of vibration. This is caused by mechanical and process reasons such as misalignment of the shafts and unbalanced pumps. As per the experts, vibration can considerably reduce the overall performance of the pump.
Let us explain the effects of the pumps below –
- It can lead to the damage of the bearings, impellers and bushings.
- The bolts which is responsible for holding both motor & the pump can loosen up.
- The longevity of the mechanical seal also reduces.
- The packing can also be damaged. The radial movement of the shaft can influence the packing.
Vibration can be due to various resources which comprise of the following –
Hydraulic Reasons -
- The sizing of the pump suction piping is not correct. This may lead to the friction loss and it consequently reduce the NPSHA which could lead to cavitation.
- The alteration in the process operating conditions
- Water hammering can be defined as a transient pulsation.
- When the pump is functioning off from its BEP (best efficiency point).
- The system has air and it is due to vortexing.
- Internal recirculation.
- If there is non-laminar flow.
- If there is vaporization of the product.
- Pulsation is mainly a variation in the fluid’s pressure that goes through the piping system of the pump.
- Vibration in the piping system of the pump.
- The wrong setting of the pulsation dampener.
- The pump is functioning at a speed at which it should not ideally function.
Water Hammer is connected with the sudden alterations in the pressure of the internal fluid that is present in the pipe. This happens as and when the flow is interfered via closing of the valve.
- Electric motor is considered as the key equipment of the pump. If the pump faced imbalance of the magnetic force in the motor, there are more chances of both noise & vibration.
- Vibration can also be a result of mechanical reasons which mainly comprise of an imbalance of the revolving parts of the pump and the electric motor.
- If the pump bearing or the sealing parts are destroyed or rusted, it can lead to vibration.
- Water power is also responsible for the vibration. It can be due to the speed of the flow (that is there in the pump) or there is uneven distribution of the pressure.
- If there is a sudden change of the pressure in the pipeline owing to start and shut down of the valve and the pump or there is a change in the working conditions leads to vibration.
Well if you come across the issue of vibration in your pump, make sure that you seek professional assistance. The professionals have the right knowledge and they can provide you with right advice that can offer you a solution for vibration.