METHOD AND DEVICE OF PRESSURE CONTROL IN WATER SUPPLY CIRCUIT Russian patent published in 2008 - IPC G05D16/20 E03B7/04 

FIELD: technological processes; motors and pumps.

SUBSTANCE: method provides preliminary determination of statistically processed data on dependence of equivalent hydraulic resistance of water supply network on pump station discharge and their introduction into control device. Introduced data is used in regulation for maintenance of constant pressure in remote point of water supply network. Device contains pump set with its electric motor, controlled electric drive, pressure sensor, signal from which is sent to one input of subtraction unit, unit of pressure losses determination in water supply network, from the output of which signal is sent to another input of subtraction unit. Output of subtraction unit is sent to the second input of controlled electric drive, to input of pressure losses determination in water supply circuit signal is sent from flow rate sensor, and also from unit of determination of equivalent hydraulic resistance of water supply circuit, at that to input of marked unit signal is supplied from flow rate sensor, and to its second input dependence of equivalent hydraulic resistance of water supply network on pump station discharge is supplied.

EFFECT: possibility of pressure control without organisation of channel between remote point and pump station; simplification of equipment and saving of power consumed by pump equipment.

3 cl, 4 dwg