FIELD: electricity.
SUBSTANCE: power consumption minimisation method is intended for ensuring the given liquid rate by selecting pump with maximum allowable capacity. Upon equipment installation, the pump is switched on and reference liquid pumping is performed. The real capacity of installed equipment is measured during the reference pumping by measuring unit and required value of operation factor is derived as the given liquid rate ratio to the measured capacity. Pumping is terminated at maximum equipment parameters, for example, motor underloading. When equipment is off line, pressure recovery curve is measured. Based on the above curve and given liquid rate, maximum allowable period of equipment outage is defined. The derived value is input to the equipment operation program. The equipment is actuated cyclically in the normal mode of operation. Under normal conditions, the current rate and operation factor value are measured in each cycle as a relation of cyclic operation time and to the cycle period. Then, the value is compared with the given value and maintained at the same level by controlling filling interval increase or decrease depending on the current operation factor increase or decrease by means of control unit. The complete control unit contains switch with its input 1 being connected with power network and input 2 with control unit output. The switch output is connected with pump drive power bus and measuring unit input. The measuring unit output is coupled with control unit input. Input/output port of control unit is linked with i/o port of regulator unit through the modem 1, communication unit and modem 2.
EFFECT: reduced load to pump motor under minimum power consumption and the given liquid rate.
4 cl, 4 dwg, 2 tbl
