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Bob
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« on: November 02, 2008, 08:24:55 pm » |
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I saw On YouTube ( after about a hour and a half down load) a guy with a small torch demonstrateing his
FLASH BACK preventer.... it was a simple Cigerette butt filter stuck in the end of the hose and then the hose put on to the jet for the flame to dance on..... the cotton in the filter evedently alows the gas to go through but stops the flame....
I don't know if a cotton filled container in line would stop a flash back on a large output generator but if it works for a small one it may well work on a bigger version...
the video was inpressive as you could hear it popping as it tried to flash back and go down the hose.
but the flash back was stopped at the cigerette filter every time!
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something to think about !!
Bob........
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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randy
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« Reply #1 on: November 02, 2008, 08:27:08 pm » |
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yeah I saw that one too, could stuff one of my old cotton T shirts in a tube. hahahaha
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Bob
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« Reply #2 on: November 02, 2008, 08:33:39 pm » |
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I was thinking a 3/4"x2" galvinized pipe with brass hose barb on bell connectors stuffed with cotton balls that the Girls use to apply their face goop.......
should do the trick for larger volumes... if its realy successfull it could do away with the pesky bubbler !....
... because a bubbler can pass a flashback !... the higher the output the better your chances are that the flash back will get through it ! ... so something better is needed !
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think I'll do some experimenting... sounds like a worthy cause... gott'a retreeve my battery from the tractor though down at the ranch ! HAHAHAHHAHA OOPS!
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Bob......
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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hydrotinkerer
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« Reply #3 on: November 02, 2008, 09:48:49 pm » |
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I have been playing with the cig thing the last couple of days. I know a butt in a 1/4" tube doesn't work unless you peel a little bit of the filter off it fits to tight for gas to go by. I'll be playing with it this week.
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« Last Edit: November 03, 2008, 07:59:01 pm by hydrotinkerer »
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Bob
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« Reply #4 on: November 03, 2008, 04:01:18 am » |
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Ok, so it cannot be packed too tight or the gas can't pass through it... thats reasonable!
thanks for the help !
Bob.........
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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KF-Puffin1
Jr. Member
Posts: 58
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« Reply #5 on: November 03, 2008, 10:14:50 am » |
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on my last atempt to make a flashback arrestor.i used the cotton floss for fishtank filters,in a 1/4 inch pvc tube 4 inch's long with nipples at both ends for the hoses,floss is paked in there pretty good and tight and does not restrict the flow almost at all,but you can actually light the gas coming out of the hose after the floss filter and it will not travel back.....dont know if its because of how tight its packed or if its the material itself...been using this since i seen that video you discribed.
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There are those that lead , And those who follow. My wife says i must follow , and hold her purse....."sigh"
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KF-Puffin1
Jr. Member
Posts: 58
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« Reply #6 on: November 03, 2008, 11:54:04 am » |
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forgot to mention that the flashback was never tested with anything above 1 lmp.....
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There are those that lead , And those who follow. My wife says i must follow , and hold her purse....."sigh"
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Bob
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« Reply #7 on: November 04, 2008, 12:46:29 am » |
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Kool ! thanks KF for the info... wonder if 5LPM would make a diference ? of if it could pass that much gas with the cotton or fiber in the line ... Hummmm
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one thing for sure if you can light the hose end and it don't make it back to the generator that is a GOOD thing!
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thank you !
Bob.........
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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Justin Frye
Newbie
Posts: 46
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« Reply #8 on: November 04, 2008, 08:31:30 pm » |
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dang puffin you brave. it takes alot of guts to light the end of the hose with just a hope that the arrester works.
-justin
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Bob
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« Reply #9 on: November 05, 2008, 02:50:02 am » |
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Nah Justin.... just knowing that your Hydroxy generator will not explode but mearly pop its top is enough to make anyone get into the act ! HAHAHAHAHA
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Bob......
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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KF-Puffin1
Jr. Member
Posts: 58
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« Reply #10 on: November 05, 2008, 01:57:31 pm » |
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bravery and a long stick with the tip dipped in keroseen
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There are those that lead , And those who follow. My wife says i must follow , and hold her purse....."sigh"
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randy
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« Reply #11 on: November 05, 2008, 10:06:13 pm » |
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Don't forget them earplugs.
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Cowboy
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« Reply #12 on: November 06, 2008, 08:10:43 am » |
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So, does a hydroxy torch work under water? Oxy and fuel are already there...
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Bob
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« Reply #13 on: November 07, 2008, 04:42:40 am » |
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Cowboy:
No not the one I made... I put the torch tip in water and it put out the flame and Popped the Pop off cap on the generator and bubbler both ! ...
after hunting them down again and hooking everything back up I tried it about 4 more times and it would not burn under water, so that is a Myth.... Hydroxy gas don't burn under water...
I think it should because I carries with it its own Oxygen but I couldn't get it to do it with the small flame I had!
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Bob......
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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Cowboy
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« Reply #14 on: November 07, 2008, 09:14:56 am » |
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Maybe the water created too much pressure to overcome? I dunno, never got into underwater welding.
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Bob
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« Reply #15 on: November 07, 2008, 09:20:10 am » |
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its possable there was not much pressure on the tip of the torch it barely worked in keeping the flame out there ... it needed more LPM and pressure to work good !
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Bob......
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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candyman55
Full Member
Posts: 117
Custom Cabinet Maker
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« Reply #16 on: November 07, 2008, 07:18:31 pm » |
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Bob, I hooked up the propane tank that I compressed the Hydrogen into to a gas Grill burner. I couldn't get the burner itself to light but I could get a small flame at the orfice. The flame itself was almost colorless but had a very slight blue tinge. I think that the propane orfice is too small. I am going to try again this time I will pull a vaccume on the tank before I start to fill it. It seemed like there was not much Hydrogen in there, I believe it was because the tank probably had O2 in it to start with and I was compressing it along with the H2.
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Bob
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« Reply #17 on: November 08, 2008, 12:01:45 am » |
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Ok that makes perfect sense... but how are you going to put -20psi on the propane tank ?
... orface being to small does not supprize me at all... because the diference between natural gas and propane is almost double the hole size ( in a water heater burner jet)
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the flame front on Hydrogen is the same as that on Hydroxy gas it is SUPER FAST..
so a Propane flame arrestor won't stop it.... but a cigerette butt filter in the hose might !...ehhehehehehehe go figure!
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be carefull
and GOOD LUCK !
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Bob......
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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candyman55
Full Member
Posts: 117
Custom Cabinet Maker
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« Reply #18 on: November 08, 2008, 07:01:20 am » |
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It shouldn't be hard to get the pressure in the tank. i wil just pull a vaccume on the tank to remove any air or what ever is in there and the close the valve. After I hook up the pressure tank generator i will open the valve and the pressure tank will do the rest (up to 80#'s). I just used a bubbler on this go and filled it up within a couple inches of the top. If you let the hose sag and put a little water in it between the bubbler and the orfice it makes a second trap kinda like a kitchen sink.
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Bob
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« Reply #19 on: November 08, 2008, 12:06:25 pm » |
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Hummm...
on that small of a hose the Hydrogen will just push it into the bubbler and the line will be free of water. defeating your "sink trap idea" it takes a larger diamator pipe for that !
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yah if you have a vacume pump that should get it down to a complete vacume with no truble
then wait till there is say 60PSI or so in the Cornish generator before opening the valves and you should be assured of having nothing but Hydrogen in the tank ....
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I guess I'll have to invest in a vacume pump ! but your right that makes allot of sense to do it that way!
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as I said before a natural gas jet for a propane water heater has a hole in it almost exactly 2 times the size of the propane jet... so you can eather drill out the jet orface or maybe use a torch tip cleaner to get the size bigger........
don't forget to adjust the air mixture on the burner it SHOULD be adjustable but not all of them are.
I can't wait to see a picture of that stove burning Hydrogen... if ya can't see the flame take a pic of it boiling a can of water ! HAHAHAHHAHAHHA or lighting a rolled up newspaper!
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I have a few irons in the fire right now and can't realy join you in your experiments just yet...
darn it anyway !... but the Cilica needs front wheel berrings and the parts should arrive soon and I need to get the front axels out today !
My other project of running the 3.5hp B&S on pure Hydroxy , is next on the list, besides my continual Moveing back to the ranch ! .... so many things to do and so little time ! HAHAHHA!
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I was looking around yesterday for a suitable container for a cornish generator though
and I think I may have found one , it will be a small one but I think it will hold enough alum and KOH
to put out enough to fill 2 or 3- 5 gal propane tanks........ not big enough for the 200gal tank or for the 25 gal tank... unless I run a bunch of batches ...
but I am no where near ready for that anyway ! HAHAHAHAH
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if I remember right... the cornish generator will need a Pressure releaf valve on it... a pressure guage and a ball valve to the line going to the tank... and ofcorse the proper fittings to attach to the tank...
am I forgetting anything ?
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Bob...........
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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randy
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« Reply #20 on: November 09, 2008, 09:33:04 am » |
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yeah, yer forgetting the flak jacket, hahahahahah
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candyman55
Full Member
Posts: 117
Custom Cabinet Maker
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« Reply #21 on: November 09, 2008, 09:59:01 am » |
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Not to worry, I used a 14" high bubbler and filled it within 1or2 inches of the top. No one has more respect for this stuff than i do.
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Bob
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« Reply #22 on: November 09, 2008, 10:19:58 am » |
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Good then you'll be around for a while yet....glad to hear that ! <GRIN>
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I gott'a go find me a Paint Pot ! its a ready made Cornish generator man ! AHHAHAHAH
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Bob........
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"Mother always told me "Son the Imposable is only a little bit harder"...and You know ... She WAS RIGHT!"
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candyman55
Full Member
Posts: 117
Custom Cabinet Maker
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« Reply #23 on: November 09, 2008, 10:34:28 am » |
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Check around the auto body shops, I have 4 of em when I started the pots were galvanized steel then I upgraded to Aluminum. They many have a couple they don't use anymore.
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