Method, device and means for driving a reciprocating linear motion double acting pump

摘要

A method for controlling a drive unit mechanically connected to a reciprocating linear-motion double-acting pump includes the use of speed-regulating control during the phase in which the piston is moving in just one direction, ascent (109) or descent (102), and the use of torque-regulating control immediately after the reversal (107, 114) of the direction of travel. The method is applicable to a control device and to a drive unit mechanically connected to a reciprocating linear-motion double-acting pump.

主权项

1. A method of controlling a drive means mechanically connected to a reciprocating linear motion double acting pump (2), comprising:
regulating control of the drive means using a speed measurement during phases of operation of the pump during which a piston of the pump is moving in just one direction, ascent (109) or descent (102); and regulating control of the drive means using a torque setpoint value immediately after a reversal (107, 114) of direction of travel of the piston, so as to obtain a flow rate of liquid or pasty product pumped by the reciprocating linear motion double acting pump that is substantially constant, while at the same time reducing pressure pulses during pump operation.