Flaming lotus flowers fabricated of steel, designed to float on water while flame effects are triggered from land.
quicktime - 31.26 MB - 03/20/2016 at 03:48
quicktime - 500.12 kB - 03/20/2016 at 03:45
After ordering all the components I assembled them and tested. My initial nozzle design threw the LPG in a large vertical poof, however I wanted more "volume" for inside the lotus, rather than sheer throw, so I crafted a new nozzle to aspirate the propane more inside the flower.
Once I hooked everything up this worked as expected.
In the future I plan to increase the size of the accumulator. The small one I purchased is essentially pointless, as LPG flows from the source tank through the accumulator as quickly as the accumulator discharges/recharges. I.e. there is no "poof" from the accumulator, it's all fuel source, so I get a frozen source tank rather quickly.
Fuel source regulator + pressure gauge. I see now the regulator has a pressure gauge port. Good thing I need the plug for elsewhere in the system.
12V DC (normally closed) solenoid valve rated for 145 psgi. This will exist behind the fuel source regulator set at ~60psi, so I'm not sure what the pressure in this part of the system will be. There are two emergency shutoff valves, one from the fuel source, and another to contain the accumulator's contents.
Unfortunately I got the wrong adapter to connect this portion of the system to the accumulator, need a 1/2" to 1/4" reducer. I understand Center Hardware And Supply Co. in SF has fittings, maybe I can avoid shipping charges since I just need a few more pieces.
My last, outstanding question is what kind of fitting/adapter I'm going to need in order to connect the high pressure regulator to the fuel source. I'm assuming I can use one of these, however I'm not sure what size M-NPT it has.
I designed the petals for the lotus a while back, however after comparing my CAD design for the carriage to the petals, it became clear that having petals of different sizes would not meet the aesthetic direction I was heading in. So I made a layout of 15 petals (3 rings of 5) for 1 4'x8' sheet of 16 gauge sheet metal:
Here is the original design for the carriage, however, this would dictate 3 different attachment widths for the lotus petals, so rather than designing 3 different petals, I'm opting to redesign the carriage (making it simpler to fabricate as well.
Well, after tons of research I've finally purchased my first batch of components from Poofer Supply! An accumulator, various regulators, pressure gauges, hoses, and a slew of irritatingly specific brass fittings for connecting everything together.
Research involved reading about existing projects which have used flame effects at a large scale, like the Flaming Lotus Girls' Serpent Mother, as well as thoroughly inspecting diagrams of poofers available online. Additionally I emailed Seth Hardy of Propane and Electronics to ask some specific questions about my design. Seth was incredibly helpful, helping me continue to form my understanding of all the design considerations involved in a system like this.
My original design for the poofer system was definitely very ambitious and non-specific enough:
I've reduced the scope of the project for now to a single poofer + lotus prototype so I can decide on the lotus' dimensions and the ambient effect of the poofer.
In researching these are some of the concepts I've found (hopefully correct):