| 摘要 |
PROBLEM TO BE SOLVED: To provide a scale collecting device of a boiler steam pipe capable of suppressing deviation in distribution density of scale particles and obtaining good collecting efficiency. SOLUTION: The scale collecting device 10A of a boiler steam pipe is installed inside steam piping for leading steam from a boiler to a turbine, and is provided in a curved part 3 for changing a downward flow of a steam main flow to a horizontal flow, for separating scale particles Pa mixed in steam. The scale collecting device 10A is equipped with a branched part 11A communicated with the curved part 3, and a pocket part 12 forming a collecting space in a lower part of the branched part 11A. A flow passage cross sectional area increasing part 14 of the steam main flow is provided in at least one of an upstream side and a downstream side of the steam piping communicated with the branched part 11A. COPYRIGHT: (C)2008,JPO&INPIT
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