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此发明述及锅炉的刚性梁。当锅炉的水冷壁是由垂直管组成,刚性梁结构一般是由位于不同高度围绕锅炉外壁的水平钢梁构成。水冷壁管与锅炉内部的高温燃烧气体有热传导关系,当锅炉由冷态启动到热态全负荷运行时,水冷壁管受到数量相当可观的线性热膨胀。刚性梁位于锅炉的外壁,与热的气流没有直接的接触,线性膨胀量很小。故对于水冷壁和刚性梁之间由于不同的热膨胀而产生的相对位移必须加以考虑。到目前为止的设计,一般惯用刚性梁悬挂在水冷壁管上的结构来承受垂直位移,
This invention relates to a rigid beam of a boiler. When the water wall of the boiler is composed of vertical tubes, the rigid beam structure is generally composed of horizontal steel beams located at different heights around the outer wall of the boiler. Water-cooled wall tubes have a heat conduction relationship with the high-temperature combustion gases inside the boiler. When the boiler is started from a cold state to a fully hot state with full load, the water wall tubes receive a considerable amount of linear thermal expansion. The rigid beam is located on the outer wall of the boiler and has no direct contact with the hot air flow and has a small linear expansion. Therefore, the relative displacement between the water wall and the rigid beam due to different thermal expansions must be considered. So far the design, the usual rigid beam suspended in the water wall tube structure to withstand vertical displacement,