| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a rust prevention device which prevents deterioration in a rust preventive effect by maintaining a closely adhered state between a cutting groove and a rust prevention tool, and prevents the accumulation of fluid in a casing. <P>SOLUTION: The rust prevention device 10 includes the casing 2 mounted in a hermetically-sealed state on a fluid pipe 1, and the rust prevention tool 15 fitted in a perforation 1c perforated in the fluid pipe 1 by a perforating means 9 advancing via an opening 3b of the casing 2 and preventing the rust of the perforation 1c. The rust prevention tool 15 includes a rust prevention member 16 for preventing rust by abutting over the perforation 1c, and a communication part 15c communicating with the inside of the fluid pipe 1 and the inside of the casing 2. An installation member 12 for delivering the rust prevention tool 15 toward the perforation 1c and holding the rust prevention tool 15 in such a state that the rust prevention member 16 is abutted on the perforation 1c is provided at a lid member 11 for hermetically sealing the opening 3b of the casing 2. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
