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板式换热器如何进行拆卸检查?

Author:heat exchanger    Publish time:2022-04-08 19:26:12    View:227

板式换热器在运行过程中常常会出现一些故障,即使未出现故障,也需要定期进行拆卸检查与维护。

1、板式换热器定期维修

(1)需要检修的设备,应按安装顺序逆行拆开换热器;

(2)在石油、化工行业中应用的设备,应按检修周期进行定期维修;

(3)设备内的介质如果是易燃、易爆或腐蚀性较强的介质,至少每年应维修一次;

(4)在其它行业中使用的板式换热器,如果未发生渗漏,一般每三年能维修一次。

2、板式换热器的拆卸检查

(1)拆卸板式换热器夹紧螺栓;

(2)移动活动夹紧板,取出夹紧板之间的密封垫片;

(3)检查换热器板片的堵塞情况;

(4)宏观检查换热器框架、板束及构件腐蚀、裂纹、变形、鼓包、壁厚减薄情况等,必要时采用表面探伤抽查;

(5)检查板式换热器接管及其焊缝、法兰等密封元件有无泄漏、损坏;

(6)检查各附件是否灵敏、可靠;

(7)检查支座有无损坏;

(8)检查密封面、密封垫;

(9)检查紧固件的损伤情况;

(10)检查基础有无倾斜、损坏、裂纹及其紧固螺栓、垫圈有无松动、损坏。

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