Steam Boilers: A Practical Treatise on Boiler Construction and Examination |
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Page xi
... thread , of number of threads per inch 139 Shape of the stays that pass entirely through the steam space of the boiler , illustrated 140 Batten , illustrated 142 Parallel stays , objections and advantages Gusset stays , their correct ...
... thread , of number of threads per inch 139 Shape of the stays that pass entirely through the steam space of the boiler , illustrated 140 Batten , illustrated 142 Parallel stays , objections and advantages Gusset stays , their correct ...
Page 62
... threads , hence the cross sectional area is taken at the bottom of the threads . There are four calculations referring to the stays for flat surfaces . 1st . To find the greatest working pressure the stay would be entitled to , and the ...
... threads , hence the cross sectional area is taken at the bottom of the threads . There are four calculations referring to the stays for flat surfaces . 1st . To find the greatest working pressure the stay would be entitled to , and the ...
Page 63
... thread ) under the boiler pressure at which it is used , and the rule for finding this is to multiply the area of plate the stay supports , by the working pressure of the boiler , and divide by the cross - sectional area of the stay ...
... thread ) under the boiler pressure at which it is used , and the rule for finding this is to multiply the area of plate the stay supports , by the working pressure of the boiler , and divide by the cross - sectional area of the stay ...
Page 64
... 14 divisor 196 = 7000 coustant 196 ) 2 199 1.20 00 ( 112 W. P. of the stay . 196 239 196 431 392 The effective diameter is the diameter at the bottom of the thread . To find the strain on each square inch of cross 39 64 STEAM BOILERS .
... 14 divisor 196 = 7000 coustant 196 ) 2 199 1.20 00 ( 112 W. P. of the stay . 196 239 196 431 392 The effective diameter is the diameter at the bottom of the thread . To find the strain on each square inch of cross 39 64 STEAM BOILERS .
Page 68
... thread ) we have : Area supported by one bolt . X W. P. of boiler . 70 16 1.22 area of stay . = 916 Ibs . Each cross - sectional square inch of the stay therefore sustains a stress of 916 lbs . SUPERHEATERS . Superheaters are used ...
... thread ) we have : Area supported by one bolt . X W. P. of boiler . 70 16 1.22 area of stay . = 916 Ibs . Each cross - sectional square inch of the stay therefore sustains a stress of 916 lbs . SUPERHEATERS . Superheaters are used ...
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Common terms and phrases
annealed area of stay Board of Trade boiler shell bolts calculation cent centre circumferential seams cock combustion box combustion chambers compressive stress constant construction corrugated diam double butt straps double rivetted doubling plate drilled engine evaporation Example factor of safety feet fire-box follows formula furnace girder gusset heat or flame HENRY CAREY impact of heat inch of stay inch thick inches diameter inspectors iron Lap Joint length less longitudinal seams marine boilers multiplied percentage plate section Plate thickness pounds Practical pressure allowable Punched Rivet diameter rivet holes rivet section riveted and fitted rivetted joints rules safety-valves shell plate side flues silky single butt straps single riveted solid plate square inch stay tubes stay-tube stays screwed steam pipe steam space steamers Strength of material stress per square superheater Surveyor tensile strength tensile stress thickness of material Thickness of plate thread tons tube plate uptake valves wide pitch width
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