METHOD FOR CONTROLLING A PUMP UNIT Russian patent published in 2019 - IPC F04D15/00 F04D7/04 F04D13/06 

FIELD: machine building.

SUBSTANCE: invention relates to a method for controlling a pump unit when a pump is clogged. Pump unit contains a pump with motor (D) and a control unit with the possibility of actuating D. During operation, D has an operating parameter from which its torque can be determined. Operating parameter has a normal value P_N during normal operation of D in the first direction. According to the method, it is activated by means of the control unit D in the first direction; stopping D if the real value P of the operating parameter has exceeded the predetermined limit value P_I of clogging, where P_I≥1.05⋅P_N; is actuated using the control unit D in the second direction, opposite to the first direction, during a predetermined time T_R of flushing; and stopping D, if the absolute value of the real value P of the operating parameter during the flushing time T_R exceeded the absolute value of the first limit value P_L1 of undoing, where |P_L1|≥1.1⋅P_I, otherwise stopping D after flushing time T_R and returning to normal operation.

EFFECT: invention is aimed at increasing the number of clogging with which the pump unit can cope on its own, and eliminate the need for maintenance personnel to perform emergency shutdowns.

11 cl, 7 dwg