| 摘要 |
<p>The invention relates to a method for evaluating the clogging of the passages of a spacer plate of a tube heat exchanger, in which an eddy-current probe is passed through a tube of said exchanger and a measurement signal is measured with said probe, and, to evaluate the clogging at the downstream edge of a spacer plate: a lower- (upper-, respectively) edge signal corresponding to the probe passing the downstream (upstream, respectively) edge of the spacer plate is determined from the measuring signal; the pulse response of the probe is estimated; the lower-edge signal is deconvoluted (S30) by means of said pulse-response estimation; and the clogging is evaluated (S33) by analysing (S32) the lower-edge signal thus deconvoluted.</p> |
