Difference between revisions of "Cone bottoms for tanks"

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(Created page with "==This is a draft page for JamsRL's scrutiny.== Forget the hole in the top for the time being so, to find length of sloping side ‘L’ Base dia ‘D’ = 570mm (typical for a ...")
 
 
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==This is a draft page for JamsRL's scrutiny.==
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[[File:Cone_Calculator_grab.png|500px|right|link=http://www.biopowered.co.uk/forum/tools/cone.php |thumb|Cone calculator. Source: Tony. Click graphic to access.]]
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Cone bottomed tanks facilitate accurate splitting of oil and water, oil and glycerol (if you [[glycerol wash]]) or glycerol and biodiesel.
  
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Forget the hole in the top for the time being so, to find length of sloping side ‘L’
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The easiest way to generate the shape or development for a conical bottom is to use the calculator complied by Tony.  For security reasons this has to be located outside of the wiki, but it can be accessed via this link or by clicking on the grahpic, right …
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Base dia ‘D’ = 570mm (typical for a 205 litre steel drum, but check before proceeding)  hence base radius ‘R’ is half this = 285
 
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Desired angle ‘a’, say = 45°
 
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L= R/Cos a
 
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L= 285/Cos 45
 
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(Cos being Cosine, available on many calculators or the internet)
 
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L = 403mm
 
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To address the hole in the top, use the same formula but substitute the diameter of the fitting you want to use for the base diameter, say 30mm
 
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Hence if  D = 30, R will = 15
 
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l = 15/Cos 45
 
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l = 21.2mm
 
  
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We are aiming for this shape to roll into the cone,
 
  
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[http://www.biopowered.co.uk/forum/tools/cone.php Biopowered cone calculator.]
  
  
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Use of the calculator should be self explanatory, but you will need to enter the following information.  Tank or drum diameter.  Required cone height or required cone angle and the outside diameter of the fitting you intend to use.  For these three parameters the calculator will provide all the dimensions to manufacture a cone.
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so we need to know the angle between the two edges (b°).  We’ve already calculated L, 403mm.  We know the outer arc length (x) is the same length as the circumference as the drum so we can calculate this using the formula C = π x d, where C is the circumference of the circle
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[[File:Conical_bottom_JamesRL.jpg‎|400px|thumb|left|Fabricated cone bottom.  Source: JamesRL.]]
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Before making a start with a metal cone it may be advantageous to check everything fits correctly by making a paper or card test cone, it could save you a great deal of time in the long run!
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[[File:Cone_bottom_tab.png‎]]
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If required a tab can be added to the development to assist in assembly and welding.
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<gallery caption="Steps in producing a cone bottom" widths="400px" heights="500px" perrow="2" align="left">
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File:Conebottomphoto1 source rob-b.jpg|Blank for cone. Source: Rob-b
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File:Conebottomphoto2 source rob-b.jpg|Development for cone cut from blank. Source: Rob-b
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File:Conebottomphoto3 source rob-b.jpg|Development formed to cone and tack welded Source: Rob-b
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File:Conebottomphoto4 source rob-b.jpg|Finished cone with fitting welded to tank. Source: Rob-b
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</gallery>
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[[Category:Biodiesel]]
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[[Category:Processors and equipment]]

Latest revision as of 18:58, 10 June 2013

Cone calculator. Source: Tony. Click graphic to access.

Cone bottomed tanks facilitate accurate splitting of oil and water, oil and glycerol (if you glycerol wash) or glycerol and biodiesel.

The easiest way to generate the shape or development for a conical bottom is to use the calculator complied by Tony. For security reasons this has to be located outside of the wiki, but it can be accessed via this link or by clicking on the grahpic, right …


Biopowered cone calculator.


Use of the calculator should be self explanatory, but you will need to enter the following information. Tank or drum diameter. Required cone height or required cone angle and the outside diameter of the fitting you intend to use. For these three parameters the calculator will provide all the dimensions to manufacture a cone.


Fabricated cone bottom. Source: JamesRL.




















Before making a start with a metal cone it may be advantageous to check everything fits correctly by making a paper or card test cone, it could save you a great deal of time in the long run!

Cone bottom tab.png

If required a tab can be added to the development to assist in assembly and welding.



  • Steps in producing a cone bottom

  • Blank for cone. Source: Rob-b

  • Development for cone cut from blank. Source: Rob-b

  • Development formed to cone and tack welded Source: Rob-b

  • Finished cone with fitting welded to tank. Source: Rob-b

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