The defect analysis and improvement of plate heat exchanger

Conventional island of a domestic nuclear power plant cooling water system of closed type plate heat exchanger often appear defect, this paper classified according to the historical recording deficiencies, and through the analysis of plate structure, material properties, flow channel, the flow of media, combined with the actual situation, put forward to reduce the expansion plate between the velocity and changing the channel to reduce the local turbulence scheme through the plate heat exchanger operating effect after reformation is good, solve the defects during the operation of a large number of perforated plate, so that the device is capable of stable operation. (authors)