Adding tank nozzle to the inside of a tank.

[w.shafer]

Can anyone tell me how to add a nozzle to the inside of a tank that is inline with a nozzle on the outside of the tank.

I am using AutoCAD Plant 3D 2012.

I have tried adding a new nozzle at the same elevation and angle with a negative length but a negative number (i.e., -6") is not an acceptable input.

Thanks,

[jason.drew]

Internal nozzles are currently not supported in Plant 3D. But I will submit this as a feature request.

Thank you,

[w.shafer]

Well thanks Jason for your reply.  Is there anyone there who could possibly offer a work-around to trick ACAD into allowing me to pipe from a nozzle on the inside wall of a tank?

I have almost as much piping inside some of my tanks as I do outside, and I would like to treat it as I do the external piping.

[Anonymous · Accepted solution]

You're right, negative number won't work, and you can't separate a flange from the vessel. However, I have a solution for you. The first thing you need to do is to draw an AutoCAD line at the point where the nozzle would be welded to the outside. Next is to insert a flange, the size and spec needed, floating in space near the vessel with the flange face pointing toward the vessel centerline IF the nozzle was in the tank. If you placed it now, the OD of the weldneck would show through the vessel. Move the ACAD line 1/2 the diameter of the flange pipe size toward the center of the vessel. Now move the floating flange from the node of the weldneck to the end of the ACAD line. Now it's inside, but you're not done. Change the view to wireframe to see the internal flange. Continue routing from the internal flange with a mating flange and a short pipe segment. Here's the trick. Go to Equipment/Attach Equipment, select the vessel, and then the first internal flange. Click on the vessel and the new flange is attached to the inside. Last step is to erase the temporary ACAD line. Now you can continue routing internally from the pipe segment. Good luck.

[w.shafer]

Grampster...Thank you very much for the tip.  It's a great workaround.

[Anonymous]

Oops, I forgot one thing - you need a tank nozzle on BOTH sides of the tank wall. So let me modify my instructions a bit. Now that you've placed a nozzle on the INSIDE, add a nozzle the normal way on tha outside at the same location as the inside nozzle. I haven't tried this yet, but it should work just fine since the inside nozzle was added with a different method. If it doesn't, then reverse the process - add the exterior nozzle first, then use my previous method for the inside. The other option is to NOT attach the inside stub-in to the tank and route a new length of pipe from that. To specify an exact length of pipe, use the dim@<angle method. Remember one thing - there's usually more than one way to trick the software into doing what you want; just be creative.

[dodinhhuan]

I wanna add a nozzle to the tank as attachment below. But i don't know how to add nozzle like this. Please help me!!!

[Anonymous]

Hi. I'm assuming you want the external bottom nozzle. When adding a nozzle to a vessel, you have the option of placing a straight pipe instrad of a flange. You could use the "BV" type nozzle. Then add the elbow to the open end, a straight length of pipe, and the flange. You can adjust the dimmensions to suit your needs. Now you can route your new line from that nozzle.

[Anonymous]

As an alternative, read my instructions on placing an internal nozzle using an AutoCAD line. The same principal can apply for almost any complex vessel attachment. Good luck.

Grampster