简述运行中凝汽器水侧反冲洗的步骤。
正确答案:
①检查凝汽器处于正常运行状态,满足下列反冲洗条件;凝汽器A、B两侧循环水进、出水阀均全开;凝汽器反冲洗连通阀关闭;凝汽器反冲洗阀A、B均关闭;
②根据凝汽器真空情况,将机组负荷减至50%~60%额定负荷;
③开启凝汽器反冲洗连通阀;
④关闭凝汽器B侧循环水出水阀;
⑤开启凝汽器反冲洗阀B;
⑥关闭凝汽器A侧循环水进水阀;
⑦开启凝汽器反冲洗阀A;
⑧维持凝汽器反冲洗1h;
⑨关闭凝汽器反冲洗阀A;
⑩开启凝汽器A侧循环水进水阀;关闭凝汽器反冲洗阀B;开启凝汽器B侧循环水出水阀;关闭凝汽器反冲洗连通阀;检查机组运行正常;开启凝汽器反冲洗连通阀;关闭凝汽器B侧循环水出水阀;开启凝汽器反冲洗阀A;关闭凝汽器B侧循环水进水阀;开启凝汽器反冲洗阀B;维持凝汽器反冲洗1h;关闭凝汽器反冲洗阀B;开启凝汽器B侧循环水进水阀;关闭凝汽器反冲洗阀A;开启凝汽器A侧循环水出水阀;关闭凝汽器反冲洗连通阀;凝汽器反冲洗结束,恢复机组正常运行方式。
②根据凝汽器真空情况,将机组负荷减至50%~60%额定负荷;
③开启凝汽器反冲洗连通阀;
④关闭凝汽器B侧循环水出水阀;
⑤开启凝汽器反冲洗阀B;
⑥关闭凝汽器A侧循环水进水阀;
⑦开启凝汽器反冲洗阀A;
⑧维持凝汽器反冲洗1h;
⑨关闭凝汽器反冲洗阀A;
⑩开启凝汽器A侧循环水进水阀;关闭凝汽器反冲洗阀B;开启凝汽器B侧循环水出水阀;关闭凝汽器反冲洗连通阀;检查机组运行正常;开启凝汽器反冲洗连通阀;关闭凝汽器B侧循环水出水阀;开启凝汽器反冲洗阀A;关闭凝汽器B侧循环水进水阀;开启凝汽器反冲洗阀B;维持凝汽器反冲洗1h;关闭凝汽器反冲洗阀B;开启凝汽器B侧循环水进水阀;关闭凝汽器反冲洗阀A;开启凝汽器A侧循环水出水阀;关闭凝汽器反冲洗连通阀;凝汽器反冲洗结束,恢复机组正常运行方式。
答案解析:有
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