GB127547A - Apparatus for Introducing Powdered Fuel into Fire Boxes of Locomotive or other Boilers. - Google Patents

Abstract

127,547. Marks, E. C. R., (Fuel Saving Co.). April 26, 1918. Fuel, feeding.-Pulverulent fuel is supplied to the fire-box of a locomotive or other boiler through a conduit having a section of larger diameter adjacent the fire-box for the purpose of reducing the velocity of and diffusing the fuel-carrying medium, the enlarged section being provided with apertures for the admission of air. As shown in Fig. 1, fuel falls from the hopper 85 into the conduit 83, which is open to the atmosphere at its outer end and is connected at its inner end to an enlarged chamber 82 secured to the firing opening 80 of the fire-box. Air is drawn into the conduit 83 mainly by the furnace draught, and to ensure thorough mixing of the fuel and air steam, air, or other fluid under pressure is introduced through a perforated coiled pipe 86 located at the open end of the conduit 83. Air is introduced to the enlarged chamber 82 through forwardlydirected openings 90, 91, and also through openings (not shown) in the rear wall of the chamber. To the rear of these openings, steam, air, or other fluid injectors 105 are provided for use if the supply of fluid through the coil 86 should fail. A pair of adjustable vanes 93 pivoted at the top and bottom are provided in the chamber 82 for spreading the stream of air and fuel. In place of the coiled pipe 86 for injecting air, a fan may be used. The conduit 83 may be provided with a flexible section when the fan is mounted on the locomotive tender; or the fan may be mounted directly on the end of the conduit.