| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plug capable of sealing a fluid passage in which fluid circulates without using air and preventing the entry of a foreign object. <P>SOLUTION: There is provided a plug sealing a fluid passage in which a fluid circulates. The plug includes: eight plug pieces 11A-11H that are adjacently disposed in a circumferential direction of the fluid passage; and a support 12 for supporting the plug pieces 11A-11H. The plug pieces 11A-11H respectively include: a closure 20 for closing the fluid passage; abutment tools 31A-31H that are provided on the closure 20 to form abutting parts 31a-31h along with an inner wall of the fluid passage; and a moving mechanism 40 for moving the abutting tools 31A-31H in a radial direction of the fluid passage. <P>COPYRIGHT: (C)2012,JPO&INPIT |
