| 摘要 |
PURPOSE:To prevent nozzle surface from the adhesion of scale by a method wherein high pressure water is spouted out from the surface of a nozzle for a terrestrial heat turbine. CONSTITUTION:A water introducing hole 3 is penetrated and bored, in the nozzle height direction, in the vicinity of the central part of the first stage nozzle 1 of a terrestrial heat turbine. A water spouting out hole 4 is bored, from the ventral surface of the nozzle, at nearly intermediate position for the nozzle height of the water introducing hole 3, the hole 4 is bored to be perpendicularly intersected with the water introducing hole 3, also communicated with the water introducing hole 3. By such a structure, a pressured water 5 is spouted out from the spouting out hole 4, consequently, the scale 2 adhered on the back-surface of the nozzle can be removed, accordingly, the nozzle surface can be prevented from adhesion of the scale. |
