| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a flange joint body capable of restraining deformation of the flange joint body when a large displacement or load is applied due to an earthquake or the like and facilitating execution of works. <P>SOLUTION: This flange joint body is jointed by a plurality of tightening members 7a, 7b including bolts 71a, 71b, and nuts 72a, 72b in which an annular tube flange portion 31 formed at an end portion of a conduit 3 disposed in a pit 2 through a gasket 6 and an annular valve flange portion 41 formed at the edge portion of the valve 4 are coaxially disposed. This includes a plurality of reinforcing fixtures 51a, 51b, 51c which surround the tube flange portion 31 and the valve flange portion 41 between the tightening members 7a, 7b and have an inner periphery surface which is brought into contact with the edge surface of the valve flange portion 41, and bolts 8a, 8b, 8c which are screwed with auxiliary fixtures 51a, 51b, 51c on more inner periphery side than the tightening members 7a, 7b and brought into contact with the tube flange portion 31. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
