Sealing a wiring port to withstand water at 130+ psi?

AI Thread Summary
The discussion centers on designing a reliable electrical port for an ROV thruster that operates at depths of 300 feet and pressures over 130 psi. The original poster seeks advice on sealing methods to prevent leaks while passing electrical wires through the hull. A participant suggests a resource for high-pressure penetrations, indicating that proper search terms can yield useful results. Further suggestions include considering whether the thruster needs to be wired through the hull or if a design could allow the rotor to operate in water while only the magnetic field passes through. The conversation emphasizes the importance of sealing and innovative design solutions for underwater applications.
mbewley59
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Hey everyone- I'm designing an ROV thruster which, for starters, will operate down to a depth of 300 feet. My problem is that I can't find any information regarding an electrical port which can pass through the hull out into the pressurized atmosphere without leaking. This will be a 12v system pushing about 15 amps for now, and I expect to use 2 or 3 wires.

Can someone point me in the right direction? I've got some concepts in my head, but nothing I can verify anywhere. Thanks!
 
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I don't understand why you are having trouble, just a few seconds on Google brought me to this site which has penetrations for up to 700 bars.

http://www.pavetechnologyco.com
 
Wow, that was quick! Guess I just didn't search on the right (obvious) terms. I get a little brain-dead sometimes.

Thanks so much, anorlunda!
 
Where is the power going? Do you really need to run it through the hull? If it's going to a thruster will the thruster also have matching connectors and shaft seals?

Could you not design it so that the thruster rotor actually operates in water and only the magnetic field (eg between stator and rotor) has to pass through the hull? Just a thought.
 

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