| 摘要 |
PROBLEM TO BE SOLVED: To provide a protection structure of a heat transfer tube installable even when the other member is installed in the heat transfer tube since arrangement of the heat transfer tube in a boiler is complicated. SOLUTION: This protection structure of the heat transfer tube in the boiler has a soot blower for removing ash sticking to the heat transfer tube arranged in the boiler by injection of steam or air, and is constituted so as to prevent direct injection of the steak or the air injected from the soot blower to the heat transfer tube by interposing a protector between the heat transfer tube and the soot blower. The protector is constituted so that a clearance between the heat transfer tube and the protector becomes smaller than a heat transfer tube diameter by forming the opposed side to the heat transfer tube in a plane shape. COPYRIGHT: (C)2009,JPO&INPIT
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