题目: 锅炉的升压速度是如何规定的? 答案: 参考答案:(1)汽包上、下壁温差引起的温度应力和压力上升引起的机械应力必须控制在允许范围内;(2)满足水、汽循环系统的设备温度均匀上升和膨胀;(3)减少升压过程中的燃料消耗和汽水损失;(4)较快地建立起稳定的水循环。根据以上因素,通过试验规定出升压速度,一般超高压,亚临界以下参数的锅炉,在升压过程汽包内工质的温升不超过1℃/min。
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