Washing methods and apparatus for heat exchanger tube cleaning p

Details Washing methods and apparatus for heat exchanger tube cleaning p Washing methods and apparatus for heat exchanger tube cleaning p

1985-11-12

1987-09-29

Hornsby, Harvey C.

Cleaning and liquid contact with solids

Apparatus

Sequential work treating receptacles or stations with means...

134104, 134131, 1510406R, B08B 302

Patent

active

046963189

ABSTRACT:
Methods and apparatus are described for cleaning and recycling flexible floating cleaning plugs introduced into and propelled by water pressure through the cooling water tubes of a power plant heat exchanger located near a flowing body of water. A cooling water outlet conduit delivers used cooling water from the exit end of the heat exchanger cooling water tubes, together with a plurality of flexible floating cleaning plugs propelled therethrough, discharging them into the flowing body of water upstream from a containment barrier. The barrier has a convergent weir region at its downstream end, and a conveyor carries floating cleaning plugs from the convergent weir through a washing spray positioned to sluice away the accumulated scale, sediment, dirt and sludge gathered by the plugs from the cooling water tubes. A cooling water pump has its intake positioned far downstream in said flowing body of water or in a different body of water. Freshly washed plugs for recycled use join the cooling water stream ejected by the cooling water pump and the stream is then delivered to the heat exchanger cooling water tubes.

REFERENCES:
patent: 3872920 (1975-03-01), Honma et al.
patent: 3919732 (1975-11-01), Honma et al.
patent: 3978917 (1976-09-01), Honma et al.

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