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分析煤制合成氨厂第Ⅳ代鲁奇炉灰锁上下阀失效原因。指出灰锁阀失效的原因是原密封面结构不合理 ,阀座 (头 )硬度达不到要求。通过改用球面阀头、线型阀座 ,试制的带碳化钨环灰锁阀后 ,其寿命大大延长
Analysis of the fourth generation of coal plant ammonia plant Lu Qi ash lock valve failure reasons. It is pointed out that the reason why the gray lock valve fails is that the structure of the original sealing surface is not reasonable and the hardness of the valve seat (head) can not meet the requirements. By switching to the spherical valve head, linear valve seat, trial production with tungsten carbide ring gray valve, its life expectancy greatly extended