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对于新型锅壳式锅炉,在下集箱后部利用回水引射下降管中的锅水,不仅使水冷壁上升管平均水速增加,而且由于“集箱效应”的有利作用,使热负荷最高的炉膛前部上升管水速进一步升高——高于规定值1倍以上,几次水动力实验均得到证实。数千台锅炉长期运行实践表明水冷壁安全可靠性完全得到保证。利用部分回水冲刷高温管板是防止可能开裂的一项十分有效措施。用下集箱回水引射时,多数
For the new type of boiler shell, using the backwater in the back of the lower header to lead the pot water in the downcomer not only increases the average water velocity of the riser in the water wall, but also increases the heat load due to the beneficial effect of “header effect” The highest riser pipe risers further increase the water velocity - more than 1 times above the specified value, and several hydrodynamic experiments have been confirmed. The long-term operation of thousands of boilers shows that the safety and reliability of the water wall are fully guaranteed. The use of some of the backwater flushing high temperature tube plate is to prevent possible cracking of a very effective measure. With the next set of boxes backwater cited, the majority