Rotary Swivel Assembly: Effects of Torque and Centrifugal Force

[palale]

Hello,

I'm designing for a rotating swivel assembly that will be used for a high pressure cutting system. The rotary swivel is set for an allowable 2800 bar of pressure but has to rotate at 300 RPM while allowing a pressure of 12-15,000 psi pass through it.


My question consists of two parts.
1) When the rotary swivel is rotating at such RPMs what is the effect that any torque drag will have on the swivel?
2) What effects will centrifugal force have on the tubing between the rotating section of the swivel and the nozzle especially when dealing with such high pressures.

Thanks for your time :)

Alex

 

[Navin A S]

1) When the rotary swivel is rotating at 300 RPM, the torque drag can cause higher levels of friction and wear on the swivel, and can lead to premature failure or breakdown of the assembly. Additionally, the torque drag can cause an increase in temperature of the swivel, which can result in a decrease in the pressure rating for the assembly.2) Centrifugal force can cause increased wear on the tubing between the rotating section of the swivel and the nozzle, as well as increased vibration, which can lead to fatigue and weakening of the tubing. Additionally, at such high pressures, centrifugal force can cause the tubing to expand, leading to internal leakage and a decrease in pressure rating.