The drain pipe of the compressor buffer tank is broken
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Recently, the drain line of the DN15 buffer tank at the third-stage outlet of a piston compressor in the plant broke at the weld seam at the bottom of the tank, and cracks were present on the cross-section of the connecting pipe. What caused this?
Hydrogen sulfide corrosion, (is the base material 16Mn?)
I’m not sure what medium you’re using for transmission; corrosion is a possibility. Also, there’s the issue of whether the base material and welding electrodes chosen are compatible
1. Incomplete welding, resulting in detachment under certain pressure； 2. High vibration; fatigue leads to detachment ；
Is the venting of your buffer tank done through the drain at the bottom? It is generally used to release liquid before starting up the equipment. Regarding the issue of pipe rupture you mentioned, I think it might be due to corrosion; the breaks usually occur at the weld areas, where incomplete welding leads to discontinuities in the pipe wall thickness, resulting in cracks, or welding stresses may also be a factor
There are two reasons: 1. It is caused by vibration; try to reduce this vibration by using methods such as reinforcement. 2. It is related to the mass of the object itself, and this issue can be resolved by eliminating it
I think it’s still due to vibrations; the poster should check whether the foundation is firmly secured and whether the pipelines are moving
One is vibration. Another issue is welding: the match between the base material and the electrode is poor, resulting in low welding quality. Corrosion is one aspect; it’s difficult to analyze without knowing what gas is being compressed.
I agree with what was said on floor 8; I think it starts with vibrations, and then it might be due to corrosion issues. What is the medium used by the poster? Is it a hydrogen compressor?
It’s caused by severe vibrations; both of the pressure gauge nozzles here have cracked due to this, and long-term corrosion is also a factor