Floating suction.
Floating suction.
(OP)
Hi,
is any body engaged in design of a flating suction for tanks?
Thanks,
Faraz
is any body engaged in design of a flating suction for tanks?
Thanks,
Faraz
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RE: Floating suction.
RE: Floating suction.
Steve Braune
Tank Industry Consultants
www.tankindustry.com
RE: Floating suction.
RE: Floating suction.
thanks for the prompt reply.
i am looking for advise.
we have a client who has installed a floating suction in his tank amd the operation group at site are saying that the downstream punps are sucking gas'air and cavitate.
the existing system is 36" size and the floats are located parallel to the pipe. the engineer has used a swing elbow instead of a swivel joint.
i can e-mail the drawing for your review if you have time and interest.
also i am very interetsted to get some ideas above the theory behind these systems.
have a nice weekend,
Faraz
RE: Floating suction.
RE: Floating suction.
What is the specific application? I've done it for safety and quality reasons involving the storing and pumping out of jet fuel for helicopters at remote, humid sites like in the Amazon jungle. The application was to avoid pumping out possible, accumulated water with the jet fuel and causing an in-flight engine failure. Fuel quality testing at these type of remote sites is difficult and expensive to justify and warrant on a day-to-day basis.
However, I can't remember right now who the fabricator was. I'd have to beat my brain to remember; but I recall that the concern (& I can assure you the concern was grave if you were one person depending on flying in and out, relying on those fuel tanks for supply) was resolved and the fabricator could prove reliability and safety.
RE: Floating suction.
RE: Floating suction.
volume of the floats* density of the liquid = weight of the suction pipe and accessories + weight of the floats
if the suystem is fully submerged.
RE: Floating suction.
RE: Floating suction.
You need vent holes of some kind in the swinging line so that it will fill with fluid when the tank is initially filled. Otherwise, it can actually start floating with the pipe outlet out of the fluid due to air trapped in the pipe.
RE: Floating suction.
you exactly pointed to the part that i have problem with.
to my understanding the forces i can see are :
- weight of the pipe and its accessories like swivel joint, elboe
- wieght of the floats and their accessories
- buoyance force of the pipe due to its volume of the thickness
- buoyancy of the floats
now here is the catch, how can i calculate the volume of the floats inside the fluid?
i assumed the fully submerged condition and calculated the forces and do a moment around pivot point for static condition.
would you please comment on these?
Regards,
Faraz
RE: Floating suction.
RE: Floating suction.
i did the same before.
it worked.
RE: Floating suction.