| 摘要 |
A heat exchange device comprises plural tubes arranged parallel to one another to form one or more tube bundles inserted axially in a cylindrical shell. A first fluid supplied through one or more first inlet holes at a first end of the cylindrical shell and oriented axially, flows inside the tubes and a second fluid, supplied through a second inlet hole, flows inside the cylindrical shell to effect heat transfer with the first fluid through the tube walls. One end of the tubes is connected to a tube plate at first inlet hole(s), which separates the second fluid from the first fluid. At least two impingement plates, each provided with plural through holes, are placed in succession between each first inlet hole and the tube plate. The impingement plates are parallel to one another and orthogonal to the cylindrical shell central axis to distribute the first fluid inside the tubes. |
| 主权项 |
1. Heat exchange device comprising a plurality of tubes arranged parallel one to the other in order to form one or more tube bundles inserted axially in a cylindrical shell, a first fluid, supplied through one or more first inlet holes located at a first end of the cylindrical shell and oriented axially, flowing inside the tubes and a second fluid, supplied through a second inlet hole, flowing inside said cylindrical shell in order to carry out heat transfer with the first fluid through the walls of the tubes, a first end of the tubes being connected to a tube plate located at said one or more first inlet holes, separating the second fluid from the first fluid, wherein between the one or more first inlet holes of the first fluid and the tube plate at least two impingement plates are placed in succession, each of the impingement plates provided with a plurality of through holes, said impingement plates being disposed parallel one to the other and orthogonally as regards the central axis of the cylindrical shell to distribute in the most uniform way the first fluid inside the tubes, wherein the number of through holes provided on at least one of said impingement plates is equal to the number of tubes forming the one or more tube bundles, and wherein a perforated impingement pan is between the one or more first inlet holes and the tube plate, the perforated impingement pan being upstream of one of the impingement plates, upstream of an other of the impingement plates, and downstream of the first inlet hole, the perforated impingement pan possessing an outer periphery that is spaced apart from an inlet manifold allowing the first fluid to flow around the outer periphery of the perforated impingement pan; and wherein the perforated impingement pan possesses a surface area, the surface area of the impingement pan being smaller than a surface area of the one impingement plate, and the surface area of the impingement pan being smaller than a surface area of the other impingement plate. |
