Connection structure and connection method of heat exchange tube and tube plate
A connection method and technology for heat exchange tubes, which are applied in the directions of heat exchanger shells, heat exchange equipment, lighting and heating equipment, etc., can solve the problems of breaking, large thermal expansion, and pulling off tubes, etc., and achieve convenient and good assembly process. The effect of sealing performance, guaranteeing machining and assembly accuracy
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[0029] Specific embodiment 1 of the present invention, the connection structure of heat exchange tube and tube sheet, such as Figure 4 As shown, the main body is composed of a tube plate 1, a heat exchange tube 2, a threaded plug 5, and an "O"-shaped sealing ring 4. There is an annular sealing groove and a section of internal thread on the inner wall of the heat exchange tube hole on the tube plate 1. , where the internal thread is closer to the heat exchange nozzle (that is, the end face of the tube sheet) than the annular sealing groove to the heat exchange nozzle, and the heat exchange tube 2 is sleeved with an "O" shape on the inner section of the heat exchange tube hole The sealing ring 4, the "O" type sealing ring 4 cooperates with the annular sealing groove and the heat exchange tube. This connection structure also includes a threaded plug 5, and the outer wall of the threaded plug 5 has a thread that matches the inner thread of the tube hole on the tube plate. There i...
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