Device for evaporative cooling of metallurgical units

DETAILED DESCRIPTION What we claim is: 1.
A device for evaporative cooling of metallurgical units which is a closed natural circulation cooling water system including: coolers accommodating several rows of vertical tubes for cooling water; a separating tank adapted for separating steam from water and acting also as a water storage; a header connected individually to each inlet of said rows of the cooler tubes and adapted for supplying cooling water from said separating tank to said tubes; a header connected individually to each outlet of said rows of the cooler tubes and adapted to discharge steam-water mixture from said tubes into said separating tank; a service water supply pipeline connected also individually to each inlet of said rows of the cooler tubes; a drain pipeline connected also individually to each outlet of said cooler tube rows and adapted for draining water from said tubes; cutoff means mounted each at the inlet and outlet of said cooler tube rows and made so that with the means set to one position both the inlets and outlets of said tube rows are coupled with said header for supplying cooling water from said separating tank and with said header discharging steam-water mixture into the separating tank accordingly, while in another position they are connected to said service-water supply pipeline and to said drain pipeline, said cutoff means comprising three-way valves.




Description:
The present invention relates to ferrous metallurgy and more particularly to devices for evaporative cooling of metallurgical units.
It may prove to be most advantageous for cooling blast furnaces, valves of blast furnace air heaters, etc.
Widely known in the art is a device for evaporative cooling of metallurgical unit, comprising a closed natural circulation cooling water system.
The prior-art device includes coolers accommodating each several vertical rows of rigidly fixed tubes in which cooling water is flowing.
The inlets of said tubes are connected to pipelines supplying cooling water therein from a separating tank, referred to hereinafter as a separator, their outlets being connected to pipelines discharging steam-water mixture from said cooler tubes to the separator