METHOD AND APPARATUS FOR MONITORING CLOGGING OF AIR-COOLED HEAT EXCHANGER FOR STATIONARY INDUCTION ELECTRIC EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To facilitate monitoring of clogging of a cooling tube by monitoring clogging of the tube according to change of pressure loss. ;SOLUTION: Wind supplied from a blower 10 is exhausted outdoor from an exhaust duct 13 through a cooling tube 5. And, when dust is adhered to the tube 5, an opening area of the tube 5 is gradually reduced by the dust. And, the wind scarcely passes and simultaneously pressure rises between the blower 10 and the tube 5. When a differential pressure of the pressure of the wind is measured by a differential pressure gage 4 at front and rear sides of the tube 5, wind volume passing the tube 5 can be known and simultaneously clogging state of the tube can be also known. Thus, a differential pressure of the wind at front and rear sides of the tube 5 can be simply measured in a short time. And, the wind volume can be known from the differential pressure measured result. Hence, the clogging of the tube 5 can be easily monitored.;COPYRIGHT: (C)1999,JPO