WATER JET PEENING DEVICE

摘要

The purpose of the present invention is to prevent increased device size and complexity while performing water jet peening on the outer surface of an instrumentation tube support and the welded section of the instrumentation tube support. The water jet peening device is provided with: a swiveling mechanism (5) for swiveling a spray nozzle (4) in the horizontal direction centered on a positioning member (3) that is positioned at the upper end of an instrumentation tube support (136); a lift mechanism (6) for raising and lowering the spray nozzle (4) in the vertical direction with respect to the positioning member (3) that is positioned at the upper end of the instrumentation tube support (136); and a rotation mechanism (7) for supporting the spray nozzle (4) so as to be able to rotate centered on a downward-inclined rotation shaft center (S) on the positioning member (3) end of the vertical direction, disposing a spray port (4b) aimed toward the side of the rotation shaft center (S) in a direction that is at a slant from the rotation shaft center (S), and rotating the spray nozzle (4) centered on the rotation shaft center (S).