How To Pair The Shaft Of a Cryogenic Valve To a Motor
How To Pair The Shaft Of a Cryogenic Valve To a Motor
(OP)
Hi guys
Have to replace a manual cryogenic valve with a motorized one, to better regulate the nitrogen liquid flow through a 3/4" steel pipe.
Using commercial cryogenic proportional valve is indeed too expansive.
The idea is then try to add a motor remotely controlled by Arduino.
Here's the valve, shown in a red box:

From the remote control point of view, I guess there are no problems - I know Arduino and its software to handle a motor (stepper or standard).
Unfortunately I have no experience with mechanical stuff, so I need some help to:
1) choose the proper motor (the smaller, the better) and its power supply
2) choose a proper mechanical coupling valve-shaft / motor
3) have limit switches for positions completely open / closed
I can use a torque wrench to measure the operating torque for the valve (that should be fairly low) if needed - otherwise I would have no idea how to dimensioning the engine power.
Could you kindly share some idea?
Any suggestions would be welcome!
Thanks,
Max
Have to replace a manual cryogenic valve with a motorized one, to better regulate the nitrogen liquid flow through a 3/4" steel pipe.
Using commercial cryogenic proportional valve is indeed too expansive.
The idea is then try to add a motor remotely controlled by Arduino.
Here's the valve, shown in a red box:

From the remote control point of view, I guess there are no problems - I know Arduino and its software to handle a motor (stepper or standard).
Unfortunately I have no experience with mechanical stuff, so I need some help to:
1) choose the proper motor (the smaller, the better) and its power supply
2) choose a proper mechanical coupling valve-shaft / motor
3) have limit switches for positions completely open / closed
I can use a torque wrench to measure the operating torque for the valve (that should be fairly low) if needed - otherwise I would have no idea how to dimensioning the engine power.
Could you kindly share some idea?
Any suggestions would be welcome!
Thanks,
Max





RE: How To Pair The Shaft Of a Cryogenic Valve To a Motor
Sort of like this:
Gear motor
Keith Cress
kcress - http://www.flaminsystems.com
RE: How To Pair The Shaft Of a Cryogenic Valve To a Motor
I would be grateful, being inexperienced, even if you could show me some model suitable motor and other mechanical components required.
RE: How To Pair The Shaft Of a Cryogenic Valve To a Motor
RE: How To Pair The Shaft Of a Cryogenic Valve To a Motor
also people like JOrdan Controls make complete valve actuators complete with limit switches, any gearing required, motor of your choice, and controls. You might look at some of these designs for your own design ideas if buying complete is not in the cards.