Magnetic drive sealless internal gear0 vs Rotary external gear pump
Magnetic drive sealless internal gear0 vs Rotary external gear pump
(OP)
Friends,
We are doing an evaluation on replacement of Rotary external gear pump with mechanical seals with a magnetic drive sealless internal gear pump.
The application is for Lubricating Oil recirculation ( continuous duty):
Flowrate of 26USGPM ,
Pressure of 25 psig
Temperature of 43.3 deg C. (the stream is cooled to 30 deg C in a heat exchanger in the circulation circuit).
Viscosity of the oil is 40SSU at 40 deg C ( Lowest operating temperature).
Particulates are eliminated through a 40micron filtration system at the discharge of the pump in the recirc circuit.
The pump required frequent seal replacement which led to this replacement proposal.
Can anyone please provide some guidance ( literature , journal articles to help in a meaning ful comparison) ?
Thanks
Samit
We are doing an evaluation on replacement of Rotary external gear pump with mechanical seals with a magnetic drive sealless internal gear pump.
The application is for Lubricating Oil recirculation ( continuous duty):
Flowrate of 26USGPM ,
Pressure of 25 psig
Temperature of 43.3 deg C. (the stream is cooled to 30 deg C in a heat exchanger in the circulation circuit).
Viscosity of the oil is 40SSU at 40 deg C ( Lowest operating temperature).
Particulates are eliminated through a 40micron filtration system at the discharge of the pump in the recirc circuit.
The pump required frequent seal replacement which led to this replacement proposal.
Can anyone please provide some guidance ( literature , journal articles to help in a meaning ful comparison) ?
Thanks
Samit
RE: Magnetic drive sealless internal gear0 vs Rotary external gear pump
Regards,
MICJK
RE: Magnetic drive sealless internal gear0 vs Rotary external gear pump
RE: Magnetic drive sealless internal gear0 vs Rotary external gear pump
Thanks for your help Pumping manual 9th edition TC Dickenson provides nice comparison.
Lochie,
I also believe the same; we are looking at the maintenance records to get a feel for the recurrence of the problem.
thanks for your input
RE: Magnetic drive sealless internal gear0 vs Rotary external gear pump
I don't know what your lubricating oil is going to lubricate but I noted that the 40 micron filter is placed at the pump discharge, that means the mechanical seal is in contact with "dirty oil" which may have abrasive media contained.
Furthermore, do have a check whether the material of your mechanical seal is suitable for use with your lubricating oil. You are pumping oil does not mean it lubricates your mechanical seal.