The Locomotive . andinduced draft fan. In outward appearance and size this fan-economizer looks like anordinary fan, but the rotor consists of a circular nest of short tubesfastened in two hollow-disk headers through which the feed water ispumped by way of the hollow shaft. The tubes are provided on theiroutside surface with sheet metal fins similar to those on air-cooledcompressor cyhnders. No cast iron is used in the construction of theeconomizer as it is intended for high boiler pressures. The results obtained with this apparatus are reported as remark-ablv ffood. Learn to laugh. A good lau
The Locomotive . andinduced draft fan. In outward appearance and size this fan-economizer looks like anordinary fan, but the rotor consists of a circular nest of short tubesfastened in two hollow-disk headers through which the feed water ispumped by way of the hollow shaft. The tubes are provided on theiroutside surface with sheet metal fins similar to those on air-cooledcompressor cyhnders. No cast iron is used in the construction of theeconomizer as it is intended for high boiler pressures. The results obtained with this apparatus are reported as remark-ablv ffood. Learn to laugh. A good laugh is better than medicine. Whenyou smile or laugh, your brain for a moment is freed from the loadthat it ordinarily carries. — Selected. 144 THE LOCOMOTIVE [January, Explosion of a Steam Turbine Casing Due to Overpressure. THE presence of a stop valve in the exhaust line of a turbine isin some cases a necessity as, for instance, when two or more tur-bines utilize the same condenser or exhaust into a common low. Fig. I. pressure supply line. Such a valve, however, introduces a hazardthat is not always appreciated, for where there is a valve there isalways the possibility of its being closed at the wrong time. Thepresence of this stop valve in the exhaust line presents the possibilityof the low pressure end of the turbine being subjected to full boilerpressure. Since the low pressure casing is not designed to withstand 1927-] THE LOCOMOTIVE. 145 high pressures, it should be protected against over pressure by an atmos-pheric relief valve. The explosion of a 50 kvv. turbine, the. results of which are shownin the accompanying picture, was due to the closing of a valve in theexhaust line under rather unusual conditions. The turbine had beenin operation as usual for several hours when it suddenly lost its load and was tripped out by anoverspeed safety occurred during theearly hours of the morning,and the plant being in dark-ness due to the shut down,the fireman on duty
Size: 1450px × 1723px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorhartfordsteamboilerin, bookcentury1800, bookdecade1860
