What’s causing the leakage at the packing of the carbon dioxide compressor?
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What’s causing the leakage at the packing of the carbon dioxide compressor? Is it leaking? Can it continue to operate?
I’m not quite sure about the question: If there are slight issues with the shaft seal, it’s not a big problem, but special permission is required. If there are changes in the leakage amount or in other operating conditions, then attention should be paid； If oil is leaking, stop the vehicle immediately for inspection
Strengthen routine inspections and provide special care for leakage points; if the leakage increases, the machine can be stopped as appropriate.
What the poster is trying to say is that smoke is coming from the packing of the carbon dioxide compressor, right? I have also encountered this situation before: in one case, the filler really leaked, and in another case, the filler had just been replaced and contained a lot of oil, which evaporated when the temperature rose. If the filler is really leaking, there’s no need to keep it running. This post was last edited by lxq700918 on 2009-2-4 18:57.]
Someone on the 6th floor understood what I meant. Some people say there is a gas leak, while others say there is smoke. Is it carbon dioxide gas leaking, or is the smoke caused by worn-out fillers, or perhaps by the evaporation of lubricating oil? How to tell? It’s not a new filler
It’s resolved; we increased the oil supply to the four sections of packing, and now there’s no more leakage
Currently, stages 4 and 5 of the compressor require micro-oil (oil-free) lubrication; if the oil supply to stage 4 is increased, it can lead to serious consequences as CO2 gas carrying oil into the system.
What was said upstairs is absolutely correct! ! ! It is not recommended to increase the oil volume; this is merely a means to ensure long-term operation ； It might be that the gap has increased ； Or there’s a problem with the filler ； It is recommended to check and replace the packing
Shut down to check the packing to see if there is a lack of cooling water or oil; it cannot be operated any longer. Last edited by lxq700918 on 2009-2-12 18:19]
As already mentioned by those upstairs, increasing the oil injection volume in Jianda only masks the problem of filler leakage, which is extremely detrimental to the long-term operation of the system. This is especially true for production units using CO2 stripping towers, where the presence of oil in the feed material is something that must be avoided at all costs. It is recommended that you promptly carry out maintenance on the compressor! ! ! This post was last edited by mol100 on 2009-2-12 19:04.]
Recently, during the maintenance of the compressor, we found that the piston rings in section five were severely worn, as were the support rings; this led to uneven wear on the compressor shaft, resulting in leakage through the packing. Everyone, analyze it – am I correct? The oil from the four sections of packing will not be carried into the carbon dioxide gas. This post was last edited by 1025199692 on 2009-2-19 at 10:10.]
Oil for the filler, cylinder injection or oil?
Smoking at the packing area can occur in the following situations: 1. Smoking is caused by overheating due to blockage of the cooling water in the packing box. 2. CO2 gas leaks due to poor running-in of the clearance after newly replacing the packing or piston rod. 3. The filler is damaged and causing air leakage. 4. The piston rod is severely worn.
Today, our compressor experienced the same issue again. Based on past experience, inspection reveals severe wear on the five piston rings ； Fragments of a five-stage piston ring were found at the inlet of the four-stage inlet valve seat ； Our five-piece piston rings have been in use for 59 days. We are 4M32-186 type carbon dioxide compressors manufactured by Shanghai Dalong Compressor Factory. Dear sea friends, please analyze what the reason is Is it a problem with the compressor design, poor quality of the piston rings, or issues with operation and maintenance? The fourth stage filler has an oil injection point, while the cylinders of the fourth and fifth stages are oil-free lubricated.
It seems that the five piston rings are severely worn, which is causing air leakage through the packing; we have encountered similar problems in our factory.
Replace them with better piston rings; generally, this kind of problem occurs due to faulty piston rings or improper adjustment of the clearance
The rapid wear of the five-stage piston rings and support rings is closely related to factors such as the smoothness of the cylinder wall, the smoothness of the piston, the cylinder’s ellipticity, its levelness, and the piston’s vibration. If you have the chance to address these issues, it will prevent the piston from damaging the cylinder, thus avoiding a vicious cycle.