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Castor63 
Newbie
Joined: 23.Oct.2009
Status: Offline
Points: 18
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 Topic: Heat Exchanger Heads
Posted: 06.Mar.2010 at 16:24 |
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The following is the data I have been given for the head of a Heat Exchanger but the problem I have is, I am not seeing a knuckle radius. This is being done in 3D
40" ID x 1/2"PL NOM
2:1 SE W/2" SF
SA-516 GR70
Can anyone help me make this head please? The other end of the Heat exchanger is:
16" OD (.375") NOM.
STD Wall Weld Cap
SA-234 WPB
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Tankman
Senior Member
Joined: 27.Nov.2009
Location: United States
Status: Offline
Points: 220
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Posted: 07.Mar.2010 at 12:59 |
I know what a heat exchanger is but, I think you need a bit more information to design/draw this one.
Can the requester give you a simple sketch?  |
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Tankman
"When the well's dry, we'll all know the value of water."
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Castor63
Newbie
Joined: 23.Oct.2009
Status: Offline
Points: 18
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Posted: 07.Mar.2010 at 17:14 |
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I do have a drawing but all I dont have is the radius of the knuckle to put the arc in. I thought there may have been something in the details I listed that I was not understanding or something. I am thinking that the arc should just be proportionate to the other dimensions maybe
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Tankman
Senior Member
Joined: 27.Nov.2009
Location: United States
Status: Offline
Points: 220
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Posted: 07.Mar.2010 at 22:06 |
Knuckle radius of any fabricated steel project, needs to be at least the thickness of the material.
A knuckle radius for 3/8" thick material should be minimum 3/8".
Am I missin' the point?  |
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Tankman
"When the well's dry, we'll all know the value of water."
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ilovecad
Newbie
Joined: 09.Mar.2010
Location: United States
Status: Offline
Points: 14
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Posted: 09.Mar.2010 at 16:04 |
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AutoCAD makes a help button for a reason!
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tulip3D
Senior Member
Joined: 23.Jul.2009
Location: United States
Using: AutoCAD2011, Inventor2011
Status: Offline
Points: 427
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Posted: 09.Mar.2010 at 16:55 |
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Boy, this ilovecad noob gotta solution for everything!
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Castor63
Newbie
Joined: 23.Oct.2009
Status: Offline
Points: 18
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Posted: 10.Mar.2010 at 00:03 |
 ilovecad wrote:
AutoCAD makes a help button for a reason!
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If you dont have anything to contribute then dont comment. Your assistance is not what anyone wants
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ilovecad
Newbie
Joined: 09.Mar.2010
Location: United States
Status: Offline
Points: 14
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Posted: 10.Mar.2010 at 15:35 |
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correct me if I'm wrong pal, but I usually use the help button when I need help. I don't know about you, just a suggestion! And about 8 more posts and I'm a groupie, so I don't appreciate being called a noob! Thanks
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tulip3D
Senior Member
Joined: 23.Jul.2009
Location: United States
Using: AutoCAD2011, Inventor2011
Status: Offline
Points: 427
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Posted: 10.Mar.2010 at 15:40 |
If thats the case, and help solves everything, then why post?
And what sir, would you like to be called?
Novice? Tenderfoot? Greenhorn? Neophyte? 
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KobusErasmus
Groupie
Joined: 11.Sep.2009
Location: South Africa
Status: Offline
Points: 42
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Posted: 11.Apr.2010 at 20:49 |
The standards we use give knuckle radius as 0.1 x main diameter. If you look up the standards for designing concave end caps for vessels & heat exchangers they all work on that.
Hope it helps.
Kobus
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Kobus Erasmus
Piping design draughting
Contract draughting
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