GB691091A - Improvements in or relating to steam-circulating devices - Google Patents

Abstract

691,091. Heatingby circulation of steam. GERDTS, G. F. April 9, 1951 [April 8, 1950; Sept. 6, 1950], No. 8189/51. Class 64,(ii) [Also in Groups II and XXVIII] In a steam-circulating device for use with a steam-heated heat exchanger and comprising in a single unit a steam-water separator and a steam injector, the centre line s p of the path of the steam is of simple U-shape, and an elbow-like inlet B, the water separator C, a mixing nozzle M, for the fresh steam injector F, and an elbow-like outlet K are all arranged so that their centre lines lie on that centre line, so as to minimize changes in direction of the steam flow and consequential friction. In Fig. 1, steam from the heatexchanger N is partly separated from condensed water by an elbow pipe A with an opening Y for the separated water, and is further separated by rotation produced by a helical vane D. The fresh steam injector F, the outlet of which is adjustable by a valve G, entrains the separated steam and flows with it through an elbow K into the heat-exchanger. The fresh steam pipe P passes through a flange Q by which the vane D is, supported. Separated water collects in the sump R and is drawn off through a pipe T. A resilient strip Z with associated windows, or other velocity indicator, may be provided. Fig. 2 shows a modification of the upper part of the unit, in which the steam jet nozzle b is directed horizontally towards the outlet of the elbow a. The nozzle b is controlled by a valve member d guided by ribs n and actuated by a screw-threaded spindle j and bell-crank lever f.