| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water spray device capable of efficiently crushing a deposit deposited on a part for laying a cable in a pipe. <P>SOLUTION: The water spray device which is inserted into a pipe conduit from an opening part of the pipe conduit having the cable laid therein and sprays high-pressure water to the part for laying the cable in the pipe conduit comprises: a channel part 100 in which one end is closed, spray holes 71 are disposed on a prescribed part of the one end side and water is supplied from the other end to the one end; and a support part 101 which supports the channel part 100 from the opposite side of the spray holes 71, wherein the high-pressure water is sprayed to the part for laying the cable from the spray holes 71 on the one end of the channel part 100. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
