A diaphragm pump used for pumping Ammonia liquid from 25 ata to 225 ata employs a hydraulic coupling for capacity control. The coupling is connected to the pump through a flywheel and gear box. we want to replace the hydraulic coupling by direct coupling and introducing a variable frequency drive facility for the motor. Can we do it without affecting the performance of the motor and the pump? Please clarify.
2006-10-28 16:47:25 · 2 answers · asked by Balakrishnan M 1 in Science & Mathematics ➔ Engineering
not without a phaze differentiated servo slave integrated into control maximized pressure control.,, the question is why would you want to go to all the trouble to increace the risk of failure and decrease efficiency?
2006-10-28 17:02:38 · answer #1 · answered by mr.phattphatt 5 · 0⤊ 0⤋
Replacing a hydraulic coupling with direct coupling is usually a bad idea. The variable frequency drive may give you better speed control, but it can't compensate for the potection provided by the slippage of the hydraulic coupling. You don't need to necessarily retain the coupling you are using now, which I gather provides you with controlled speed variation. There are standard hydraulic couplers on the market which could replace this one, and allow you the use of the VFD with more assurance of motor and pump protection.
2006-10-28 17:37:02 · answer #2 · answered by Helmut 7 · 0⤊ 0⤋