公开(公告)号：US3923314A

公开(公告)日：1975-12-02

申请号：US42244173

申请日：1973-12-06

申请人： CARBORUNDUM CO

发明人： LAWLER HARRY A ,  REYS JOHN

IPC分类号： F16L41/00 ,  F16L41/08 ,  F28F9/10 ,  F28F21/04 ,  F16L37/00

CPC分类号： F28F21/04 ,  F16L41/001 ,  F16L41/08 ,  F28F9/10 ,  Y10S277/937 ,  Y10S277/938 ,  Y10S277/943

摘要： An impermeable non-rigid seal is made between the joints of silicon carbide heat exchanger tubes and their supporting silicon carbide tube sheets by first making suitable openings for the tubes through the tube sheet before it is fired. Concentric with the small tube opening is a somewhat larger countersunk second opening, the bottom of the countersink forming a shoulder for the retention of packing material. A third countersink is made, larger than the second, to form a recess in which a graphite plug may be bonded. The tube sheet is infiltrated with silicon in a high temperature furnace and the graphite plug drilled and threaded to engage corresponding threads on a cylindrical packing follower. A silicon carbide tube is inserted in the tube sheet and packing material placed around it. The packing is enclosed by sliding the packing follower over the end of the tube and engaging it with the threaded graphite plug. Rotating the follower then compresses the packing to make an impermeable nonrigid seal between the tube and tube sheet.

摘要翻译： 在碳化硅热交换器管的接头和它们的支撑碳化硅管板之间，首先在管子被烧制之前先通过管板制成合适的开口来形成不可渗透的非刚性密封。 与小管开口同心的是一个较大的埋头孔第二开口，埋头孔的底部形成用于保持包装材料的肩部。 制造第三个埋头孔，大于第二个孔，以形成可以粘合石墨塞的凹部。 管板在高温炉中用硅渗透，并且石墨塞钻出并螺纹以与圆柱形填料随动件上的相应螺纹接合。 将碳化硅管插入管板和围绕其放置的包装材料。 通过将衬垫随动件滑动在管的端部并将其与螺纹状的石墨塞接合来包装。 然后旋转随动件然后压缩填料以在管和管板之间形成不可渗透的非刚性密封。