Reasons for pipeline expansion joint leakage
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There is a pipe expansion joint; the medium is low-pressure condensate, with a pressure of 0.8 Mpa and a temperature of 135 degrees. The pipeline diameter is DN200, and the leakage occurs at the metal wave-shaped expansion joint. The deviation at both ends of the expansion joint exceeds 20 degrees. Experts, please analyze the cause.
What is condensate? Steam condensate? The leakage may be caused by welding defects during manufacturing, or it could result from an incorrect choice of bellows material during design. As for deviations exceeding 20 degrees, it is recommended to adjust the pipeline. Please ask the original poster to provide more detailed information, such as the material of the bellows, whether the leakage occurs at the welds or at the peaks and valleys of the bellows, as well as information about the medium used and the manufacturer. The manufacturer’s reputation is very important.
Take a look at what the medium actually is Is there dew point corrosion? ““The deviation at both ends of the expansion joint exceeds 20 degrees” – is it a problem with installation or with the selection of the product? Also, if there is a leak at the weld site, it could also be due to welding quality issues
It seems it might be a selection issue; the temperature deviation has exceeded the limit