In-situ inspection method and device for leakage of condenser heat exchange tube

Abstract

The invention discloses an in-situ inspection method and device for leakage of a condenser heat exchange tube. The device comprises a condenser, a guide rail, an inspection vehicle, a control line, apower and control system, a condenser tube and a condenser hot well; the guide rail is installed above the hot well at the bottom of the condenser; the two ends of the inspection vehicle are erected on the guide rail; the output end of the control line is connected with the inspection vehicle; and the input end of the control line is connected with the power and control system. Condensed water falls into a specially-made condensed water collection device; effluent of the condensed water collection device automatically flows into a conductivity monitoring device; and the conductivity monitoringdevice is provided with a wireless communication module, so that remote transmission of a test result can be implemented. The device radically solves the problem that the condenser leak detection diagnosis result is wrong due to the small number of sampling points, remote detection and the like.

Description

technical field [0001] The invention relates to the technical field of power generation, in particular to an in-situ patrol inspection method and device for heat exchange tube leakage of a condenser. Background technique [0002] According to statistical data, about 30% of the corrosion damage accidents of large boilers are caused by the corrosion damage of condenser tubes. The direct damage of condenser tube damage is not only the loss of the condenser itself, but also the more important , due to the high quality requirements of feed water for large boilers, the water quality buffer is small, so once the condenser tube leaks, the cooling water leaks into the condensed water, resulting in an increase in the salt content of the condensed water, the main component of which is Ca 2+ , Mg 2+ 、Na + , Fe 3+ 、HCO 3 - , SO 4 2- , Cl - , NO 3 - , silicon dioxide, organic impurities, and dissolved oxygen, etc. These impurities are the main causes of fouling and corrosion of ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of long lag time in condenser leakage measurement in the prior art, the purpose of the present invention is to provide a method and device for in-situ inspection of condenser heat exchange tube leakage, which fundamentally solves the problem caused by the number of sampling points. Few, remote detection, etc. lead to incorrect diagnosis results of condenser leak detection

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