What tools are used to inspect and diagnose internal leaks in heat exchangers?
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The color of the product from our equipment is abnormal; we suspect internal leakage in the heat exchanger. However, with such a large number of units, we can only check them one by one. It’s too dangerous to inspect directly through the drain valve of the heat exchanger, as the medium is at high temperature and pressure. Is there any kind of sampling valve that can be connected to the drain valve to reduce the risk?
You should carefully examine the changes in process parameters, identify the differences, and take targeted actions. If necessary, the analyst can be asked to assist
Check the pressure changes at the inlet and outlet of the heat exchanger; if there is a certain pressure difference between the two, then the side with the change has a problem. 2. Those with minor temperature changes (compared to normal parameters) have issues.
To analyze the heat exchange medium, first identify the cause; then determine whether it is possible to shut down a single heat exchanger one by one. If it is not possible to shut down a single unit, slightly open the drain valve mentioned by the original poster and take samples for analysis
Analysis and judgment can be made based on changes in operating parameters! As mentioned above, it is also possible to slightly open the drain valve to discharge the material for testing and analysis!
Export analysis is really useful: lol
Just take a sample from the low-pressure side outlet for analysis, and that’s it!