| 摘要 |
<p>The invention relates to a method for leakage control and localisation of leakages in the internal faces that separate the primary and secondary sides of a plate heat exchanger, wherein a leakage control is performed in a first step by a solution containing a fluorescent colorant being supplied to one of the primary and secondary sides, whereas a clear liquid that is recycled is supplied to the opposite side, whereby the presence of leakages in the heat exchanger is verified by detection of the presence of the fluorescent colorant in the clear liquid, and that, in a second step, the presence of leakages results in the other side with the solution of the fluorescent substance being pressurised for a period of time while the other side is allowed to remain filled with air, following which the heat exchanger is drained and disassembled, and the location of the leakages is determined by visual inspection of the plates.</p> |
