Tube support plate of steam generator

F - Mech Eng,Light,Heat,Weapons – 22 – B

Patent

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Details

F22B 37/20 (2006.01) G21D 1/00 (2006.01)

Patent

CA 2677871

To provide a tube support plate (200) disposed in a steam generator, in which the pressure loss is reduced and which has a sufficient strength. A large number of through holes (100) for passing heat conduction tubes (210) therethrough are formed in the tube support plate (200). The through holes (100) are formed in a hexagonal shape. Projecting parts (100a, 100b, 100c) are formed on the alternate sides (102, 104, 106) of the sides forming the hexagonal shape. The through holes (100) are arranged in a honeycomb pattern. Consequently, the strength of the tube support plate can be kept while reducing the pressure loss by increasing the area of the opening of each through hole (100).

L'invention vise à proposer une plaque de support de tube (200), disposée dans un générateur de vapeur, dans laquelle la perte de pression est réduite et qui présente une résistance suffisante. Un grand nombre de trous traversants (100) pour faire passer des tubes de conduction de chaleur (210) à travers ceux-ci sont formés dans la plaque de support de tube (200). Les trous traversants (100) ont une forme hexagonale. Des parties en saillie (100a, 100b, 100c) sont formées sur les côtés alternés (102, 104, 106) des côtés formant la forme hexagonale. Les trous traversants (100) sont disposés dans un motif en nid d'abeille. Par conséquent, la résistance de la plaque de support de tube peut être conservée tout en réduisant la perte de pression par l'augmentation de l'aire de l'ouverture de chaque trou traversant (100).

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