http://www.4qd.co.uk/omega/prod/ws.html
I agree with bat-boy ....Hawker Batteries.
http://www.euro-batterietechnik.de/Produkte/Batte…ssey/index.html
http://www.4qd.co.uk/omega/prod/ws.html
I agree with bat-boy ....Hawker Batteries.
http://www.euro-batterietechnik.de/Produkte/Batte…ssey/index.html
http://labratrevolt.com/CYCvsWAR.mov
Was the site for this video ...it no longer exists.
I've uploaded my copy to youtube.
Better deal than the courier I use!
Excellent ... :]
@Rene,
Aluminium co2 bottle on Ebay uk......
http://cgi.ebay.co.uk/ws/eBayISAPI.d…ADME:L:RTQ:UK:1 ENDED
IF you like I could purchase and forward to you @ cost.
£30 + £32 post
Regards Woody
ZitatUnd zwar muss da nicht irgendwie an beide Seiten ein QEV?
Simple pneumatic diagram.
All I can supply is a link to some decent pictures.......
http://www.robothut.robotnut.com/rj5p9.html
Regards Woody
Try http://www.mcmaster.com/ and search for "table chain".
Goodness knows what the equivalent is in Germany.
You have mail........
ODD size 3kg BUT...
I have 5 off 3.2 kg co2 extinguishers that are out of test date .....but suitable for a 16 bar buffer.
You arrange the postage and you may HAVE one .......Gratis.
Woody
Dimensions 152mm dia x 400mm long ( under the valve )
Volume 4.8 liters Weight without valve 4kgs
I'm going to post in English and hope that one of the English speaking denizens of this Forum will be kind enough to translate ....... Google and Babel Fish suck when it comes to some translations!
ALL the cylinders or bottles that you have listed are fine ...... but are they suitable for your robot design?
I and others on the forum recommended 3 times your cylinders swept volume ......... So around 4.5 liters.
Ultimately you must decide a size / volume .
The Pulverdauerdrucklöscher is usually rated @ 15 bar working pressure...... The 4kg has a volume of 6 or 7 liters ? ..... Weight empty 2.6 kg.
http://www.gloria.de/feuer/tragb_loesch/co2_kst.html
The Kohlendioxidfeuerlöscher 5kg has a volume of 7.5 liters BUT it is BIG and HEAVY ... 9 Kg's empty!
So .......
My recommendation ... 2 off 2 kg Auto-Pulverfeuerlöscher @ 1.4 kg's each.
http://www.gloria.de/feuer/tragb_loesch/pul_f.html
You will have more options for their location and placement inside your robot.
Cheers Woody
+ Puffertank = Flip schnell = 48 gramm liquide co2 / flip =1.5 liters GAS @ 16 bar / flip
Volumen Puffertank in litres = 3 x volumen Zylinder ist gut, aber mehr ist besser!
Zylinder Volume 100mm x 200mm = 1.5 liters
3 X Zylinder Volumen von 1.5 liters = 4.5 Liters
Puffertank = 4.5 liters
4 kg Pulverdauerdrucklöscher = 6 liters +
Volumen LIQUIDE co2 zylinder ( litres ) ~ 1.5 x Gewicht in kg's
So 2Kg LIQUIDE Feuerlöscher = 3 Litres Volumen
425 grammes Alco Jet x 1.5 = 637.5 cc or .6375 liter Volumen
Um was es mir eigendlich ging ist wie berechne ich wieviel Co2 in einen ZYLINDER geht, als beispiel habe ich 1.5 Liter genommen, also sagen wir ich brauche Co2 ... gramm um Co2 1.5 Liter ( Zylinder ausgefahren) zu haben, darum gings in erster Linie !
48 grams pro flip @ 16 bar
Yes?
Puffertank:- Volumen 6 Liters + (4 kg Pulverdauerdrucklöscher )
Schnell Flips pro 2 kg co2 = 40+ ( 48 grams pro flip @ 16 bar )
Kein Puffertank
Langsam Flips pro 2 kg co2 = 40+ (48 grams pro flip @ 16 bar )
Puffertank:- 4 kg Pulverdauerdrucklöscher .... Prüfdruck 30 bar.... Ges. Gewicht 6.6 kg's.
Leergewicht 2.6kg's
2kg CO2 Aluminium Feuerlöscher Ges. Gewicht ~ 5Kg's.
Leergewicht 3kg's
"Daumenwert 500 Liter Gas pro kg CO²" @ 1 bar
500 / 16 = 31.25 liters per kg @ 16 bar
A 2kg CO2 bottle will give 62.5 liters of gas @ 16 bar
Ram volume per OUT or extend stroke = 1.5 Liters
So number of OUT or extend strokes 62.5 / 1.5 = 40+
A 3 liter buffer tank will be OK for this size of ram .... but a little more volume would be better.
3 Liters of gas @ 16 bar start pressure ( buffer tank ) then 4.5 liters @ 10.66 bar final pressure ( buffer tank + ram )
"The only real issue I see with your setup is that the gas influx might be more that you anticipated because the valve might close too slow. Then your prd would lose gas at every intake, wich is not the intention."
A direct acting solenoid... rather than a Burkert ... would I agree be best .
Setting the pressure switch @ a lower than required pressure is also a way to get around the " slow " closing time. I.E. Set the pressure switch @ 8 bar ....... by the time the valve shuts the tank is @ ~10 bar.
Edit [ My system was originally going to be F.P. ..... But I revised the working pressure down to 30 bar ..... Why? .......Well the supply pressure drops very quickly as you use the gas and @ freezing the bottle only has 33 bar in it.]
Good Morning Leo.
My buffer tank is ...as you know .... an old co2 extinguisher bottle......BUT your statement "Easy solution, make sure the buffertank is also Full pressure capable, hence no problem if burkert leaks" is wrong!
What about the rest of the system?!
A pressure relief valve that will flow more gas than the supply can provide is the only way to be safe.
Woody: we use this regulator in our first bot:
http://www.hornung.org/druckgastechnik/z...ckminderer.html
ZD 150
I followed the reference Zentraldruckminderer ZD150 ( posted earlier on in this thread ) last night and came up with this .... :]
"Hoffentlich die Lösung diverser Probleme:
http://www.hornung.org/druckgastechnik/b...ckminderer.html
Knackigen Durchflussmengen, Halbzoll-Anschluss, alles was das Herz begehrt. Den Typ ZD150 haben wir für neun Euro bei Ebay geschossen"
Edit ...... Seems a good choice ..... any problems with it?
Why?
It's how they control compressors.
BTW... I have a LARGE pressure relief valve fitted.
EDIT [ I'm using 3.8 mm bore pipe from the valve to supply the buffer ........ this helps to keep the flow / pressure ratio managable.]