Heat transfer pipe support structure and waste heat recovery boiler

Abstract

A heat transfer pipe support structure has a heat transfer pipe support plate with through-holes formed therein, heat transfer pipes inserted through the through-holes, and a vibration-damping support plate joined to the heat transfer pipe support plate. An edge of the vibration-damping support plate is joined to the heat transfer pipe support plate so that the heat transfer pipes are held between the edges of the through-holes and the vibration-damping support plate. As a result, the clearance between the edges of the through-holes and the heat transfer pipes is reduced, enabling vibration of the heat transfer pipes to be reduced. This results in a reduction of sliding movement of the heat transfer pipes with respect to the edges of the through-holes, and thereby, wear of the heat transfer pipes is reduced.

1 . A heat transfer pipe support structure comprising:
 a heat transfer pipe support plate having a first through-hole formed therein;   a first heat transfer pipe configured to be inserted through the first through-hole; and   a vibration-damping support plate formed in a belt-shape;   an edge of the vibration-damping support plate being joined to a surface of the heat transfer pipe support plate so that the first heat transfer pipe is held between an edge of the first through-hole and the vibration-damping support plate as a result of a contact surface of the vibration-damping support plate different from the edge thereof coming into contact with an outer surface of the first heat transfer pipe.   
     
     
         2 . The heat transfer pipe support structure according to  claim 1 , wherein the vibration-damping support plate is formed so that a curvature of a contact surface of the vibration-damping support plate that is in contact with the first heat transfer pipe becomes equal to a curvature of an outer surface of the first heat transfer pipe. 
     
     
         3 . The heat transfer pipe support structure according to  claim 1 , wherein
 the first heat transfer pipe includes a pipe and a fin joined to an outer side of the pipe, and   the vibration-damping support plate supports the first heat transfer pipe by being in contact with the fin.   
     
     
         4 . The heat transfer pipe support structure according to  claim 1 , further comprising:
 a second heat transfer pipe; wherein   the heat transfer pipe support plate further has a second through-hole formed therein, and the vibration-damping support plate is disposed so that the second heat transfer pipe is held between an edge of the second through-hole and the vibration-damping support plate.   
     
     
         5 . A waste heat recovery boiler comprising:
 the heat transfer pipe support structure according to  claim 1 ; and   a flue forming a flow path through which an exhaust gas flows;   the first and second heat transfer pipes being disposed in the flow path.   
     
     
         6 . A waste heat recovery boiler comprising:
 the heat transfer pipe support structure according to  claim 2 ; and   a flue forming a flow path through which an exhaust gas flows;   the first and second heat transfer pipes being disposed in the flow path.   
     
     
         7 . A waste heat recovery boiler comprising:
 the heat transfer pipe support structure according to  claim 3 ; and   a flue forming a flow path through which an exhaust gas flows;   the first and second heat transfer pipes being disposed in the flow path.   
     
     
         8 . A waste heat recovery boiler comprising:
 the heat transfer pipe support structure according to  claim 4 ; and   a flue forming a flow path through which an exhaust gas flows;   the first and second heat transfer pipes being disposed in the flow path.