Various deviation issues with tube sheets and baffle plates
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Help: Does anyone know how to check various deviations in tube sheets and baffle plates? Where can I look it up? Thank you. This post was last edited by vivo1314 on 2009-4-11 09:57.]
Page 24 of GB151 specifies the diameter of openings in the tube sheet along with the allowable tolerances; pages 72–73 detail the diameter of openings in the baffle plates and support plates along with their allowable tolerances, as well as the outer diameter of these plates and the corresponding allowable tolerances. The original poster can download this book to take a look.
I’m talking about the deviation between holes, the deviation between bolt holes on the tube sheet, as well as things like flatness.
Check the relevant flange standards or consult the book on technical requirements for chemical equipment drawings
Take a close look at clause 5.5 of GB151 \"Shell and Tube Heat Exchangers\" regarding the heat exchange tubes, and you’ll understand!
You are referring to the technical requirements for tube sheets, right? Refer to the book \"Tolerances for Shape and Position\" based on the precision requirements.
Wen Bing is absolutely right; the allowable deviation between the bolt holes in a tube sheet can be determined by referring to the standards for the flanges that pair with the tube sheet. If it is an equipment flange, then the standards for such flanges should be consulted, which specify the requirements regarding bolt hole deviations and flatness. Information on these topics can be found in the book TCED41002-2000 \"Technical Requirements for Chemical Equipment Drawings\"