Heat transfer tube monitoring apparatus

Abstract

According to the present invention, a heat transfer tube monitoring apparatus for use in a heat exchanger including multiple-stage heat transfer tube bundles spaced apart from each other in a flow direction of flue gas includes a differential pressure detecting unit used for detecting a differential pressure between upstream and downstream for each of the heat transfer tube bundles. With this configuration, an abnormal heat transfer tube bundle can be specified.

1 . A heat transfer tube monitoring apparatus for use in a heat exchanger including multiple-stage heat transfer tube bundles spaced apart from each other in a flow direction of flue gas, the heat transfer tube monitoring apparatus comprising:
 a differential pressure detecting unit that is used for detecting a differential pressure between upstream and downstream for each of the heat transfer tube bundles.   
     
     
         2 . The heat transfer tube monitoring apparatus according to  claim 1 , further comprising a heat-transfer medium detecting unit that is provided downstream of each of the heat transfer tube bundles and detects leakage of a heat-transfer medium flowing in the heat transfer tube bundles. 
     
     
         3 . The heat transfer tube monitoring apparatus according to  claim 2 , further comprising a display that displays thereon the differential pressure for each of the heat transfer tube bundles detected by the differential pressure detecting unit and presence of leakage of the heat-transfer medium detected by the heat-transfer medium detecting unit.