What are the symptoms of cavitation in high-speed pumps? Is it caused by the pipeline?
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The staff reported that the pump vibrates heavily and makes a lot of noise; what could be the possible causes? When the pump was checked later, it was found to be operating normally, meaning there was no fault with the pump itself. I’m not very familiar with this area.
It has been running for half a day; at night, the crew reported high pump noise and significant pipeline vibration, so the pump was switched off
I checked the flange bolts of the pump pipeline and found them to be tight; the motor coupling was also in good condition. The day before yesterday, I started the pump again for a test run to see if there were any abnormalities, and the pump operated perfectly fine. So, does the high pump noise and severe pipeline vibration indicated by the equipment stem from cavitation? There is a buffer tank before the pump; what could be the possible causes?
It is caused by the residual air in the pipeline not being exhausted.
There are issues with pump alignment, as well as problems with the baseplate installation. Check and rule it out.
It is necessary to ensure a minimum flow rate, and the adjustment of the matching between the return line and the delivery line must be done slowly and smoothly. Especially when integrating with a pressurized system in the back route, improper operation can cause continuous vibration; in many cases, it is not necessarily necessary to evacuate the pressure
This is the result of the drawback of specialization. Those who work with machinery must understand manufacturing processes. It is necessary to know the operating parameters of mechanical equipment. If it falls within the range of design parameters, you can look for reasons related to the machinery itself. If it falls within the scope of manufacturing processes, you can also clearly specify the correct methods of operation to meet the requirements for the equipment to function properly. (Hehe, maybe your position will even get promoted:lol) The term \"high-speed pump\" itself is quite vague – how exactly is \"high speed\" defined? What you’re describing could be a centrifugal liquid pump; the pump itself has a parameter known as the net positive suction head, which is related to the suction pressure of the pump. It might also be caused by an insufficient liquid level at the pump’s suction inlet Could it also be cavitation caused by the saturation temperature of the fluid medium? ? It is best to discuss the parameters related to the manufacturing process with the process engineers. For reference.
It might be cavitation; has the operating condition changed?