A pressure test was conducted on the outer tube of the double-layer tube; before 5 kilograms of pressure was reached, the inner tube already deformed. The inner tube has a diameter of 400 and a thickness of 5 cm, while the outer tube has a diameter of 450...
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This post was last edited by qy576100527 on 2018-3-12 at 20:43. Pressure testing was conducted on the outer tube of the sleeve; the pressure yet reached 5 kilograms, and the inner tube has already deformed. The inner tube has a diameter of 400 and a thickness of 5 cm, while the outer tube has a diameter of 450. What could be the reasons for this? Is it really the insufficient thickness? I hope to get answers from everyone. Thank you! Pressure test deformation of the outer tube of the jacketed tube
Is it because the suppression causes the temperature to rise, the inner tube expands due to heat, and since it cannot expand in length, it can only expand inward?
Bro, I have another such jacket pipe right next to me; the gas comes in from that side, thus staying away from the area where there’s a problem
It shouldn’t be. It seems to have been crushed; the original poster didn’t specify the material of the pipe Is the wall thickness really 5 CM or 5 mm? For a pipe with a diameter of 400, a wall thickness of 5 mm is indeed a bit thin. Was this design not verified?
304 material, 5cm thick,
It’s caused by insufficient stiffness; the external pressure wasn’t checked, and the wall thickness is not adequate. Either the core tube is also under pressure during the sleeve test
Previously, the internal pipe was also pressurized to 8 kilograms during pressure testing; this time problems arose even before the pressure was fully applied, and the wall thickness is 5 mm
The inner tube test will definitely be fine; it just can’t withstand external pressure!
The wall thickness is 5mm; it can’t be edited on the phone – I typed it wrong in a hurry
Bro, can you explain the reason? At that time, the inflation wasn’t complete; the pressure inside was probably less than 5 kilograms