Expansion joint for gas production
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Ask for advice: What material do you choose for gas expansion joints? The standard I originally chose was "Pressure Vessel Corrugated Expansion Joint GB16749-1997" and the material was 0Cr19Ni9. I don't know if it is suitable? How many meters away is it more appropriate to install an expansion joint?
The material of the expansion joint for gas production can be ordinary stainless steel. As for how many meters to set up an expansion joint, it depends on the actual process flow on site.
I don’t know what process pipeline you use the expansion joint on? Whether it is a main gas pipeline or a blower gas recovery pipeline, no matter where it is used, the expansion amount of each meter of pipeline must be calculated based on the gas temperature, and then the location of the expansion joint should be arranged according to the pipeline process, the appropriate model should be selected, and which type of expansion joint should be determined. As for whether to choose stainless steel, it depends on the cost.
How many meters to set one must be determined by conducting pipeline flexibility analysis and calculation.
There is absolutely no problem in using stainless steel expansion joints on the upstream and downstream pipes at the outlet of the gas generator. This is good enough.； Use one for any length of pipe, but only one can be used, but the expansion amount must be calculated based on the temperature difference between the outlet temperature and room temperature. If one level is not enough, multi-section expansion can be selected, but only one set is used.