WASHING RIG Russian patent published in 2017 - IPC B08B9/32 

FIELD: machine building.

SUBSTANCE: invention relates to power machine building, in particular to the methods of washing of circuit systems of nuclear steam generating units (NSGU), and can be used during pipelines washing of different power facilities, and during repair of the power and transportation systems. The rig comprises a day tank for flushing water, motor-driven pumps, pipelines with valves, mechanical filters and an ion-exchange filter, steam and electrical heaters, a heat exchanger, a drying system using inert gas or compressed air. The rig comprises a device for direction change of flushing flow, it comprises two pipes crossing without contact, one pipe is connected with a heating pipeline via motor-driven three-way valve, and with drainage pipeline via tee, and second pipe is connected with pressure pipeline via the second tee, and with drainage pipeline via similar three-way valve. For the rig internal flushing between drainage and pressure pipelines a jumper is installed, it is made out of two parts connected by wafer membrane with set of rings with different internal diameters. The day tank has sockets closed with folded covers with seals, with installed filtering elements. Above the day tank perpendicular to its sockets the branches of the drainage manifold with shut-off valves are installed. Wherein the support flanges of the filtering elements lay on ring sites of the sockets, and the filtering elements via through openings of the sockets are partially immersed in the flushing water of the day tank cavity.

EFFECT: design of high capacity, reliable and relatively inexpensive washing rig ensuring rated cleanness and demineralization of the flushed systems at significant reducing of the flushing time.

4 cl, 7 dwg