Noisy Vacuum Pump
Noisy Vacuum Pump
(OP)
I am running some new vacuum pumps that we have just purchased. All the pumps are the liquid ring type. The pump is quite to a pressure of approx 80 Kpa(negative). As soon as I close the suction port to reach a pressure of 88 to 92 Kpa(neagative) the pump becomes noisy. I have checked that I have the correct coolingf fluuid flow rate, as well as the fact that the cooling fluid in the supply tank remains at the centre line of the shaft.
Please any suggestions
Finite
Please any suggestions
Finite





RE: Noisy Vacuum Pump
Noisy liquid ring vacuum pumps can be caused by:
1. Coupling misalignment
2. High seal water flow
3. High discharge pressure
4. Improperly anchored pump
5. Bearing failure
6. Water filled casing during start-up
7. Lack of air flow to the pump
RE: Noisy Vacuum Pump
RE: Noisy Vacuum Pump
1. Modification of the basic pump design and/or operating conditions to minimize the generation of acoustic energy.
2. Interruption of the transmission of noise, whether borne by the structure (use flexible couplings and/or flexible resilient supports), liquid (use pulsation acoustic filters) or air (use absorption materials on the pump enclosure).
RE: Noisy Vacuum Pump
Silencers are installed at discharge and these things will not help much incase of your problem.
RE: Noisy Vacuum Pump
Otherwise, a cooler seal water / liquid supply is needed. Vapor pressure of the water/liquid at that particular pressure and temperature is the theoritical achievable vacuum / pressure.
RE: Noisy Vacuum Pump
Finite
RE: Noisy Vacuum Pump