. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. drain cock for blowingout the glass. The try cocks are frequently placedon the above-mentioned standard orcolumn. Fig. 86. The action of the gauge glass is to show the level of thewater in the boiler by natural gravitation and the best positionfor it is in view of the engine room, as close to the boiler aspossible and preferably in the middle line of its diameter, atsuch height that its lowest portion is about two inches abovethe highest part of the fire line of the boiler, a
. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. drain cock for blowingout the glass. The try cocks are frequently placedon the above-mentioned standard orcolumn. Fig. 86. The action of the gauge glass is to show the level of thewater in the boiler by natural gravitation and the best positionfor it is in view of the engine room, as close to the boiler aspossible and preferably in the middle line of its diameter, atsuch height that its lowest portion is about two inches abovethe highest part of the fire line of the boiler, and its centre,nine inches above that, making the total visible portion of glasseighteen inches long. Glass water gauges sometimes have pipe connections top andbottom. The object of this arrangement is to have an undis-turbed water level m the glass by carrying one pipe to thesteam dome and tho other near to the bottom of the boiler;the one position not being so liable to be afEected by foamingand the other by the boiling of the water. Cocks shouldalwavs be fitte«l to tbo boiler ends of these pipes, in order that. ijS Maxims and Instructions. WATER case of accident to the pipes, steara and water may be shutoff. The glasses are liable to burst and become choked np withdirt. The former defect is easily repaired by shutting off thecocks in connection with the boiler and putting in a new mud or sediment is cleaned out by opening the above-mentioned drain or blow-out cock and allowing the steam orwater, or both, to rush through the glass, which will efEectuallyblow out all sediment and leave the glass in good conditionagain to show the height of the water in the boiler. In opening the cocks connected with the glasses, it should bedone cautiously, as the glass is liable to burst. A strip of white running the whole length of the glass onthe side toward the boiler is a great help in observing thevariations of the water line in the tube. It is not needed to remove th
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsteamen, bookyear1917
