| 摘要 |
PROBLEM TO BE SOLVED: To provide a spray device of a boiler steam pipe which can prevent the damage to and vibration of a support annulus and a Venturi tube, even if deformed curvature is caused to a nozzle and the Venturi tube. SOLUTION: In the spray device of a boiler steam pipe 1, a setscrew 10, which is radially inwardly threaded through the proper location of the boiler steam pipe 1 and holds a support annulus 6 and the large diameter portion of a Venturi tube 4 with its tip part to support them, is provided, The tip part of the setscrew 10 is formed to freely appear as a probe 11 having a projection type of sectional form, and a coil spring 12 (an elastic repellent body) which energizes the probe 11 to the protruded condition, is built in the setscrew 10.
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