Vibration of water pump outlet pipe
Thread Content
The circulating slurry pipeline for desulfurization vibrates greatly, but the main body of the water pump vibrates very little. The pipeline has been installed with reinforced brackets, and rubber cushions and clamps are installed on the brackets. Circulation pipeline installation method = Circulating slurry pump outlet DN200-300 variable diameter + DN300 expansion joint + DN300 valve + DN300 main pipe (water pump 650m3/h, lift 19m, pipeline pressure 0.12Mpa,) What is the reason for the large vibration of the main spray pipe now? I hope the teachers can give me some advice.
Try installing a section of metal hose 30-50cm at the outlet of the pump.
There are expansion joints, which are equivalent to metal hoses. Is the vibration caused by the flow rate being too high? Try closing the valve smaller and the vibration still persists. If there is no vibration, the valve opening is too large and the flow rate is too high, causing vibration.
It is best to use a piping diagram so that the analysis will be more accurate.
Has it always been like this, or are the vibrations just happening now? It should be caused by the flow rate
If there is no problem with the flow rate, then the next thing to consider is whether it is a problem with expansion joint selection?
When the valve is closed to an opening of 40 degrees, the vibration is basically nothing? The water pump flow is 650m3/h, the water pump outlet has a variable diameter of DN200-300, and is followed by a DN300 pipe.
It was normal for the first few days, but then suddenly this problem appeared.
There should be no problem with this. It should be correct to match the size of the pipe to the size of the expansion joint, right?