GB141391A - Improvements in or relating to ejectors - Google Patents

Abstract

141,391. Contraflo Condenser & Kinetic Air Pump Co., and Higgins, C. F. Oct. 10, 1918. Ejector condensers; regulating action.-Comprises means for stabilizing an ejector forming part of an ejector system of steam-condensing plant. The stabilizing action is produced by the introduction of a by-pass circuit for taking fluid, already within the ejector system, from a suitable evacuate a steam condenser or the like. The first part of the combining-tube of this ejector. The ing-tube of the ejector to be stabilized, and conducting it to the suction part or the convergent point behind the divergent portion of the combininvention is illustrated in its application to a plant in which two steam ejectors 2, 3 in series, with intermediate jet condensation, are used to ejector 2 may withdraw varying quantities of vapour from the condenser, and hence the ejector 3 is stabilized by the provision of the by-pass pipe 6 fitted with the valve 7. This valve is controlled automatically by the pressure in the condensing-chamber through the agency of the pipe 9. When the volume of fluid drawn by the ejector 2 falls to such an extent that the uncondensed residue is insufficient to promote satisfactory working of the ejector 3, the fall of pressure in the condensing-chamber allows the valve 7 to open. A proportion of the fluid then passes round the pipe 6 and by escaping condensation increases the residual fluid to be dealt with by the ejector 3.