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发明公开
CN110684984A 用于二回路阀笼的化学清洗方法 无效 - 驳回

用于二回路阀笼的化学清洗方法
摘要：
本发明属于核电维修技术领域，具体涉及一种用于二回路阀笼的化学清洗方法。方法包括：使用碱性溶液浸泡清洗二回路阀笼；使用水清洗碱性溶液浸泡清洗过的二回路阀笼；在将二回路阀笼上的碱性残留溶液清除时，使用酸性溶液浸泡清洗二回路阀笼；使用水清洗酸性溶液浸泡清洗过的二回路阀笼；在将二回路阀笼上的酸性残留溶液清除时，使用钝化剂对二回路阀笼进行钝化处理；使用水清洗钝化处理后的二回路阀笼，直至将二回路阀笼上的钝化液残留清除；在将二回路阀笼上的残留的钝化液清除时，对二回路阀笼进行干燥处理。本公开实施例可以对二回路阀笼进行较为快速、彻底的清洁，较少对二回路阀笼产生机械损伤。
摘要（英）：

The invention belongs to the technical field of nuclear power maintenance, and particularly relates to a chemical cleaning method used for a secondary loop valve cage. The method comprises the steps of using an alkaline solution for soaking and cleaning of the secondary loop valve cage; using water for cleaning the secondary loop valve cage which is soaked and cleaned by the alkaline solution; when a residual alkaline solution on the secondary loop valve cage is cleared, using an acid solution for soaking and cleaning the secondary loop valve cage; using water for cleaning the secondary loop valve cage which is soaked and cleaned by the acid solution; when a residual acid solution on the secondary loop valve cage is cleared, using a passivating agent for passivating the secondary loop valve cage; using the water for cleaning the passivated secondary loop valve cage until a residual passivating agent on the secondary loop valve cage is cleared; and when the residual passivating agent onthe secondary loop valve cage is cleared, drying the secondary loop valve cage. The secondary loop valve cage can be rapidly and thoroughly cleaned, and the mechanical damage to the secondary loop valve cage can be little.

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