Improvements in and relating to Direct Contact Feed Water Heaters for Steam Boilers and the like.

摘要

13,367. Wilkinson, G. June 11. Feed-water, heating, purifying, and supplying.- Air is separated from feed-water by interposing a chamber of larger cross-section than the feed-pipe between the feed-pump and the steam space, but preferably within the boiler shell. The feed-pipe a delivers into the de-aerating box b, in which the air collects, being then removed through a pipe leading outside the boiler. The box depends into -the tray f so as to form a water seal, suitable pressureequalizing pipes s being fitted. Overflowing from the tray f, the water traverses a series of inclined surfaces consisting of disks j and trays h, the latter having annular openings i. From the settling-chamber k, the feed-water overflows into a stand-pipe m, terminating near the blow-off aperture at the bottom of the boiler. In order to determine the temperature of the water in the settling - chamber, a direct - reading or a recording thermometer p is placed in a mercury bath contained in a tube passing centrally through the heater, reference with regard to this feature being made to Specification No. 13,367A, A.D. 1906.