Liquid Ring Vacuum Pump Performance Curves

Performance curve of liquid ring vacuum pump of description.

Liquid ring vacuum pump performance curves.

When a seal fluid other than water is used the liquid ring vacu um pump manufacturer will require the specific gravity specific. The design technology behind liquid ring vacuum pumps is advanced to achieve optimum reliable performance for the rigorous demands of harsh industrial environments. Capacities expressed in cfm or scfm standard cubic feet per minute can be very misleading because we have to take into consideration the volumetric efficiency of the pump at a specific vacuum. Pump designed to remove gases through the use of rotating impeller blades that enter and leave a ring of liquid.

Different types of liquid ring vacuum pump its suction volume flow curve is related to the size of the liquid ring pump suction cavity and suction port. Liquid ring pump is widely applied in many industry fields due to the advantages of isothermal compression process simple structure and liquid sealing. When the suction port is small the suction cavity is relatively large with the suction pressure increases the suction volume flow is also increasing. Medium capacity liquid ring vacuum pumps vacuum levels up to 28 hga 10 hp to 200 hp nash medium capacity liquid ring vacuum pumps offer a highly powerful range of small to medium size single stage vacuum pumps for use in diverse industries including oil gas general industrial and chemical.

From these curves correc tions are made to take into account actual operating conditions. This is an article on the evaluation of performance liquid ring vacuum various trouble shooting tips and various problems that can occur in the operation of the pumps. Liquid ring vacuum pumps and systems. Liquid ring vacuum pumps are all rated in acfm the actual capacity at the different vacuum levels as shown on the individual pump performance curves.

The technology behind liquid ring vacuum pumps. They are typically used as a vacuum pump but can also be used as a gas compressor the function of a liquid ring pump is similar to a rotary vane pump with the difference being that the vanes are an integral part of the rotor and churn a rotating ring of liquid to form the compression chamber seal. Many liquid ring vacuum pump manufacturers publish dry air curves with 60 f seal water figure 2. The impeller forces this sealing liquid to the periphery of the pump casing where it forms a moving ring of liquid around a center void.

Based on the actual operating cycle of suction compression discharge expansion a universal theoretical model for performance of liquid ring pump was established in this study to solve the problem that the theoretical models deviated. A liquid ring pump is a rotating positive displacement pump. Liquid ring vacuum pumps are an economical and robust solution engineered to meet specific customer requirements.