| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a joint structure that can suppress inclinations of a connecting pipes and can connect the pipes at high air tightness and reliability. <P>SOLUTION: The other connecting pipe 1b is made to approximate and oppose the connecting pipe 1a which holds a metal-made gasket 20 via a holder 8, and a center ring 9 is attached so as to surround external peripheries of flanges 2a, 2b. Segments 10a to 10c are closed and formed into ring shapes while inserting a trapezoidal part with slopes 3a, 3b set as both-side sides into a groove 14. A bolt 11 is screwed into a hole 13, the trapezoidal part with the slopes 3a, 3b set as both sides is inserted into the groove 14, a gap between the flanges 2a, 2b is narrowed, and protrusions 6a, 6b are made to pressure-contact with both faces of the gasket 20. At this point, protrusions 19 of a cramp ring 10 are made to intrude into grooves 5a, 5b between the slopes 3a, 3b of the flanges 2a, 2b and collars 4a, 4b at sides of the flanges, thus guiding the contraction motion of the cramp ring 10. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
