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    • 5. 发明专利
    • Heat exchanger
    • 热交换器
    • JPS59142393A
    • 1984-08-15
    • JP1621683
    • 1983-02-04
    • Mitsubishi Heavy Ind Ltd
    • ARAI TAKAONAKADA HIDENORI
    • F28F19/00F28F9/02F28F9/04
    • F28F9/0229F28F19/002
    • PURPOSE:To prevent concentration of impurity caused by boiling action and corrosive action in a heat transfer tube, by punching a through hole into a tube plate and by connecting the through hole to a high-pressured water source, as well as to cover the end of a heat transfer tube, which is inserted into the through hole of a tube plate, with a thick-walled sleeve having a water passage hole. CONSTITUTION:The end of a heat transfer tube 1, which is to be inserted into a tube plate, is covered with a sleeve 2, and the part is sealed by welding as shown by the numeral 3 and 4. The heat transfer tube 1 is previously heat-treated, and the influence by heat generated during welding and the residual internal stress are removed from it. After that it is fitted to a tube plate 5. The sleeve 2 is welded 6 to the tube plate 5, and further, welded sealings 7 and 8 prevent the fluid from flowing into the gap 9 between the tube plate 5 and the sleeve 2 from outside, and the fluid in the tube 1 from flowing out of the tube through said gap 9. A through hole 13 for fresh water, punched into the tube plate 5 and connected to a high-pressured water source, is connected to a water hole 14 which is provided to a water inlet lid 10, and the end of said water hole 14 is connected to a tubular water passage 15 which encircles the sleeve 2, while the water passage 15 is interconnected to a water hole 16 which is provided to the sleeve 2.
    • 目的:为了防止在传热管中由沸腾作用和腐蚀作用引起的杂质浓缩,通孔冲入管板,将通孔连接到高压水源,并覆盖端部 的传热管,其插入管板的通孔中,具有带有通水孔的厚壁套筒。 构成:要插入管板的传热管1的端部被套筒2覆盖,并且通过焊接密封该部分,如数字3和4所示。传热管1是 预先进行了热处理,并且从焊接中产生的热量和残留的内部应力的影响被去除。 之后将其装配到管板5上。套管2被焊接到管板5上,而且,焊接密封件7和8防止流体流入管板5和套管2之间的间隙9, 管1内的流体通过所述间隙9从管流出。用于冲洗到管板5中并连接到高压水源的淡水的通孔13连接到水孔 14,其设置在进水盖10上,并且所述水孔14的端部连接到环绕套筒2的管状水通道15,同时水通道15互连到设置到水口16的水孔16。 袖子2。