| 摘要 |
<P>PROBLEM TO BE SOLVED: To intercept fluid certainly and simultaneously to enhance repair of a piping and degree of freedom of route change. <P>SOLUTION: A piping 100 is intercepted at arbitrary position except the position corresponding to an opening hole 101 formed for inserting a piping shut-off device 10 into the piping 100 by the self-movable piping shut-off device 10 provided with wheels 14. The piping shut-off device 10 intercepts the piping 100 by an outer peripheral cylindrical body 11 and an interception plate 12 and an expansion tube 13 on its outer peripheral side but certainly intercepts the piping 100 by supporting and fixing to the piping 100 not only through the friction force between the expansion tube 13 and inner peripheral surface of the piping 100 but by a support member 15. <P>COPYRIGHT: (C)2011,JPO&INPIT |
