内容标题39

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                标题: 高温介质泵机械密々封存在的问题
                发布时间 2021-09-13 10:21 浏览次数
                  髙温介质泵机械密封存在的问题:
                  以炼油行业为例,当前,国内外∮髙温热油泵遍及采用接触式波纹管单端面机械№密封,国产波纹管机械密封的应用寿命平均一年▲左右,进口波纹管机械密封可达两年以上,但基⌒ 本上必须采用种种冲洗和冷却等措施,以∮降低冲突温升,防止结焦、热裂、波纹管失≡弹、波纹◥管断裂、泵抽空、密封件老▂化等而导致密封失效。为此,必然花消大↑批的冲洗油和冷却水,造成运行费用高∩(初步估计,一台热油泵年冲洗冷却所需运行费用超过10万元),能耗量大,并且机械密封可靠性差,安全性低,维修老本高。
                ??е???