The vibration in the secondary outlet pipeline of the compressor is severe
Thread Content
What causes the severe vibration in the secondary outlet pipeline of the compressor?
This post was last edited by dqkwb on 2018-6-9 at 20:18. There is power-frequency oscillation in the compressor pipelines; we have experienced this issue as well. The solution is to increase the backflow rate, raise the speed, and adjust the flow rate of the gas in the second stage.
We encountered this situation in our previous cycle as well. Our catalytic unit is currently under major maintenance; many components of the pressure gas unit have been replaced, the control valves of the back-pressure turbine have been replaced with new ones (the control valves had become stuck in the previous cycle), and the turbine rotor has had its blades replaced along with undergoing dynamic balancing. Personal opinion: A large pressure difference between the intake and exhaust pressures of the compressor, excessive loading on the compressor, a high opening degree of the anti-surge valve, high intake temperature, and high vibration levels of the compressor itself can all have a significant impact on the vibration in the compressor’s outlet pipeline. :lol
It is caused by two reasons: first, pipeline vibration resulting from the gas flow velocity. Second, the design issue of the pipeline. Solution: First, increase or decrease the compressor load to shift the resonance point of the secondary outlet pipeline. II. Modify pipeline design
Has this phenomenon always existed, or does it occur occasionally? Are the pipe supports secure? Has the support spring failed? While the pipeline is vibrating, is there excessive vibration in the unit as well?
The unit is not vibrating; the vibration is mainly in the outlet pipeline, and the supports have been reinforced
Are there any of the reasons mentioned by the BOSS?
I agree with the BOSS’s view; similar situations occur from time to time in our crew as well. In my opinion, the main reasons are the combined effects of changes in the compression ratio of the compressor, the density of the rich gas mixture, and the speed of the turbine. These factors cause the pressure at the outlet of the rich gas compressor to be lower than the system pressure, resulting in pipeline vibration. Every time such a situation arises, making adjustments based on this principle quickly eliminates the vibration!
Recent inspections revealed that the entire platform was experiencing significant vibration. Upon checking the pipelines, it was found that the gas line at the outlet of the air compressor was vibrating, which in turn caused the air-cooled platform to vibrate as well. Inside and outside are matched; no problems detected yet. The torch is being placed now