In the middle of the roof is an air layer which is cooled and cleaned automatically by water spraying system linked to the rainwater collection tank.

屋顶的中部是通风口，通过连接雨水收集池的水喷淋装置自动化控制，实现冷凝和净化。

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Expansion joint is adopted at the lower extreme of recycling machine, water cooled panel, platen superheater and the place piercing through roof.

返料器下端及水冷屏、屏式过热器穿过炉顶处均采用膨胀节。

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A multitude of ring-shaped cracks and three water leakage points were discovered in the right side lower header of a boiler together with a cave-in of the boiler roof water-cooled wall.

锅炉右下集箱产生了很多环状裂纹和三个渗水点，同时顶棚水冷壁管塌陷。

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