| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure for preventing a short path of combustion gas in an upper space of a super-heater which can be easily attached and cope with high temperature and a thermal expansion difference. SOLUTION: The structure for preventing the combustion gas short path in a boiler is provided with a roof tube on the inner surface of the upper part of a furnace, includes sequentially transversely along a combustion gas flow from the furnace a front evaporating tube, the super-heater and a rear evaporating tube, and has the upper space part of the super-heater. A partition plate whose surface in the upstream side of the combustion gas flow is made of a metal plate covered with a fireproof material and extending from the position of the space part to the roof tube is suspended on the roof tube by a suspending metallic material in the upstream side from the space part in the direction of the combustion gas flow, and attached to the front evaporating tube by a metallic fastening material. Thus, fireproof characteristics and a heat resistance are high, an attachment is easy, a thermal expansion is absorbed, and all the combustion gas passes through the super-heater.
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