Effect of steam pressure fluctuations on leaks in heat exchanger pipelines
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The products from our factory contain water; after on-site inspection, it has been determined that there is a high likelihood of leakage in the reboiler (steam on the shell side, with the material on the tube side). It is now suspected that excessive fluctuations in steam pressure may have caused steam to leak into the tube side of the reboiler (it is suspected that there might be small corrosion holes in the tube bundle, and these fluctuations in steam pressure led to the leakage of material). Data analysis shows that the range of steam pressure fluctuations is 1.79–2.13 MPa; the design conditions for the reboiler are 1.9 MPa on the shell side and 0.07 MPa on the tube side. How is the impact of steam pressure fluctuations on leaks calculated? I hope an expert can give me some guidance on the calculation direction.
Is the tube bundle of U-tube type or floating head type? Is the medium corrosive? The shell side operates under overpressure.
Fixed tube sheet, vertical siphon reboiler. The medium has low corrosivity. What I want to calculate now is the impact of operating with excess pressure in the shell side on the leakage rate and magnitude of steam entering the tube bundle, assuming that the tube bundle is already perforated. Meanwhile, what impact does the overpressure in the shell side have on tube bundle perforation?
Is corrosion perforation caused by overpressure in the shell side considered from the perspective of thermal stress?
Excess pressure in the shell side will accelerate the leakage from the weak points in the tube bundle (similar to a pressure test for leak detection).
Just use a dew point meter to check and you’ll understand.
Isn’t a dew point meter used to measure temperature? Does it matter?
A dew point meter is not only used to measure temperature but can also detect leaks. If the gas is humid, the temperature cannot rise. Check the instructions.