Bringing Wire into a Pressure Vessel -- How to Properly Seal?
Bringing Wire into a Pressure Vessel -- How to Properly Seal?
(OP)
Hey guys,
I'm trying to bring a coaxial cable into a pressure vessel, through a wall or fitting, and I'm trying to figure out an off-the-shelf way to make the seal. I needs to hold 150psi.
A Swagelok would work in theory, but the cable isn't a standard dimension. It's a little under 7/16" thick. How can I handle this?
Regards,
Grant
I'm trying to bring a coaxial cable into a pressure vessel, through a wall or fitting, and I'm trying to figure out an off-the-shelf way to make the seal. I needs to hold 150psi.
A Swagelok would work in theory, but the cable isn't a standard dimension. It's a little under 7/16" thick. How can I handle this?
Regards,
Grant





RE: Bringing Wire into a Pressure Vessel -- How to Properly Seal?
Regards,
Mike
RE: Bringing Wire into a Pressure Vessel -- How to Properly Seal?
Just a few questions.
- What is the commodity in this vessel?
- What is the maximum operating temperature for this vessel?
- What does the cable connect to inside the vessel?
- Why are you doing this?
Sometimes its possible to do all the right things and still get bad results
RE: Bringing Wire into a Pressure Vessel -- How to Properly Seal?
Pennpiper,
It's crude oil and the maximum operating temperature is 90degC. It's connecting to a bus bar.
Thanks in advance.
Grant
RE: Bringing Wire into a Pressure Vessel -- How to Properly Seal?
Buy a pass-through pressure fitting intended for this purpose. Do such exist for coax connections? I don't know, but Conax is a good place to look.
RE: Bringing Wire into a Pressure Vessel -- How to Properly Seal?
Unfortunately, I forgot to mention that I'm wiring 70kV into the vessel via that cable. Everything from Conax is 8kV or less.
This is why I thought it'd be best to pass the cable itself through the vessel since it is pre-insulated for the voltage. Don't worry about the cable corroding, it won't.
Thanks for the continued support, btw.
Hopefully we can figure this out.
Regards,
CocytusME
RE: Bringing Wire into a Pressure Vessel -- How to Properly Seal?
RE: Bringing Wire into a Pressure Vessel -- How to Properly Seal?
RE: Bringing Wire into a Pressure Vessel -- How to Properly Seal?
RE: Bringing Wire into a Pressure Vessel -- How to Properly Seal?
If the cable BLOWS OUT, 150 psig will be propelling 90 C scalding crude oil out of an open hole.
My bet is that the latter represents a far greater risk of injury than the former.
RE: Bringing Wire into a Pressure Vessel -- How to Properly Seal?