Branch pipe: Difference between revisions
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(Created page with "Category:Steam Locomotive Parts Category:Definitions A branch pipe conveys steam from the throttle to the input of a cylinder. Most steam locomotives...") |
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[[Category:Steam Locomotive Parts]] | [[Category:Steam Locomotive Parts]] | ||
[[Category:Definitions]] | [[Category:Definitions]] | ||
[[File:Newly Installed Branch Pipes on DRG 168 20190404.jpg|thumb|right|300px|Newly installed branch pipes on Denver & Rio Grand #168. After all the lapping, careful installation is important to assuring proper sealing.]] | |||
A [[Branch pipe|branch pipe]] conveys steam from the throttle to the input of a cylinder. Most steam locomotives have two [[Branch pipe|branch pipes]] , one for each cylinder, that split off a single feed from the throttle. | A [[Branch pipe|branch pipe]] conveys steam from the throttle to the input of a cylinder. Most steam locomotives have two [[Branch pipe|branch pipes]] , one for each cylinder, that split off a single feed from the throttle. | ||
Revision as of 13:21, 4 April 2019
A branch pipe conveys steam from the throttle to the input of a cylinder. Most steam locomotives have two branch pipes , one for each cylinder, that split off a single feed from the throttle.
Calculating Diameter
The diameter of a branch pipe can be computed with the formula given below, from "A Treatise on the Steam Engine".
- The following rule gives the usual diameter of the branch steam pipe for locomotive engines.
- RULE - To find the diameter of the branch steam pipe for the locomotive engine - Multiply the square of the diameter of the cylinder in inches by 0.021. The product is the diameter of the branch steam pipe for the locomotive engine in inches.
- Example - Required the diameter of the branch steam pipes for a locomotive engine, when the cylinder's diameter is 15 inches. Here, according the rule, diameter of branch pipe is computed as:
- branch pipe diameter = 0.021 x 152 = 0.021 x 225 = 4.725 inches