Boiler stay: Difference between revisions

A '''boiler stay''' is an internal [[structural element]] of a [[boiler]]. Where the shell of a boiler or other pressure vessel is made of cylindrical or (part) spherical elements, the [[internal pressure]] will be contained without distortion. However, flat surfaces of any significant size will distort under pressure, tending to bulge.<ref>{{cite book | title=Locomotive Management | last1=Hodgson | first1=Jas. T. | last2=Lake| first2=Chas. S. |year=1954 |edition=10th |publisher=Tothill Press |location=London |page=77 }}</ref> Stays of various types are used to support these surfaces by tying them together to resist pressure. Some boiler configurations require a great deal of staying. A large [[locomotive boiler]] may require several thousand stays to support the [[Firebox (steam engine)|firebox]]. In [[water tube boiler]]s, stays were sometimes used between their main chambers, and could themselves be water tubes.<ref>{{cite book|last=Robertson |first=L.S. |title=Water-Tube Boilers: Based on a Short Course of Lectures Delivered at University College, London |location=London |publisher=Murray |year=1901 |url=https://archive.org/stream/watertubeboiler02robegoog#page/n6/mode/2up |oclc=5640870 |pages=153–4}}</ref>

==Stay typesTypes==

==StaylessSee fireboxalso==

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