How can we design a flange used as Quick opening closure having slotted bolt holes
How can we design a flange used as Quick opening closure having slotted bolt holes
(OP)
Dear All
I am working on a design project that comprises of a quick opening closure having slotted bolt holes and instead of having stud bolts it has Eye bolts eye side of the bolt is attached to the shell so that we can instantly open all bolts i am having trouble in designing such type of the flange coz ASME Section VIII Div. 1 Appendix 2 donot address it therefore i am attaching the sketch of the flange having slotted bolt holes
Please suggest me the design procedures for that flange
http://files.engineering.com/getfile.aspx?folder=8...
I am working on a design project that comprises of a quick opening closure having slotted bolt holes and instead of having stud bolts it has Eye bolts eye side of the bolt is attached to the shell so that we can instantly open all bolts i am having trouble in designing such type of the flange coz ASME Section VIII Div. 1 Appendix 2 donot address it therefore i am attaching the sketch of the flange having slotted bolt holes
Please suggest me the design procedures for that flange
http://files.engineering.com/getfile.aspx?folder=8...





RE: How can we design a flange used as Quick opening closure having slotted bolt holes
prex
http://www.xcalcs.com : Online engineering calculations
http://www.megamag.it : Magnetic brakes and launchers for fun rides
http://www.levitans.com : Air bearing pads
RE: How can we design a flange used as Quick opening closure having slotted bolt holes
RE: How can we design a flange used as Quick opening closure having slotted bolt holes
prex
http://www.xcalcs.com : Online engineering calculations
http://www.megamag.it : Magnetic brakes and launchers for fun rides
http://www.levitans.com : Air bearing pads
RE: How can we design a flange used as Quick opening closure having slotted bolt holes
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: How can we design a flange used as Quick opening closure having slotted bolt holes
Thanks guys.
RE: How can we design a flange used as Quick opening closure having slotted bolt holes
Any solution?
RE: How can we design a flange used as Quick opening closure having slotted bolt holes
You design the flange as though the outer edge of the flange in the calculations is the diameter of the inside of the bolt holes. This will probably make it much bigger and heavier than a "standard" flange of the same rating which is probably why no one does this for any flange with a decent pressure rating when quick opening closures are much better. It is also common knowledge that flanges to B 16.5 fail when designed to ASME VIII, but are permitted under the rules as being certified to B 16.5. However any flanges outside the range need to be specifically designed to ASME VIII and hence tend to be bigger and heavier.
I can't see much advantage myself to this arrangement as you still need to undo each nut in turn and then do them all up again. The minor time saving in not having to unscrew the nuts another three or four turns does not seem worth it to me... your term "instantly open all bolts" is, unfortunately, simply not possible.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: How can we design a flange used as Quick opening closure having slotted bolt holes
Regards,
Mike
RE: How can we design a flange used as Quick opening closure having slotted bolt holes