| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an attachment structure capable of attaching a sensor to the outside of a hollow body without leaking liquid. <P>SOLUTION: An attachment tool 1 includes a ball valve 11, an insertion tube 12, a first seal member 22, and a pressure device 28. The ball valve 11 is arranged in a tank 3 from an outside to open/close a communication passage 8a. The insertion tube 12 has an insertion passage 19 to which a sensor 9 is inserted, and the insertion passage 19 communicates with the communication passage 8a via the ball valve 11. The insertion tube 12 includes the first seal member 22 for perform sealing between the sensor 9 and the insertion tube 12. A pressure chamber 24 is formed between the first seal member 22 and the ball valve 11. The pressure device 28 supplies pressure liquid to the pressure chamber 24. The first seal member 22 and the ball valve 11 are separated at a predetermined distance x. The predetermined distance x is a distance between the distal end of a base body 9a of the sensor 9 and the distal end of a sensor part 9c. <P>COPYRIGHT: (C)2013,JPO&INPIT |
