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["蜗VRTTNG이상음",,"现有的蒸发结晶使用,降膜循环泵6台,型号为HZ

2020-05-06View Original

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现有蒸发结晶用,降膜循环泵6台,型号为HZ200-150-315,流量:400,扬程:32,转速:1450,电机功率:75kw。泵内介质温度103℃左右 在运行中蜗壳内一直有噼里啪啦,类似汽蚀的声音。现已在泵进口处增加防涡流挡板,出口阀门基本全开,但是此声音还未消除。(之前考虑是回流汽蚀,管路已更改,阀门全开,声音未见明显降低)。另:介质改为常温水时,运行无此声音。 目前泵的振动较小:2-3之间,但出口管道振动较大。 请教下各位此类问题还需如何继续处理,谢谢。
Reply #22020-05-06
泵材质316L,四川自贡泵业化工泵
Reply #32020-05-06
出口阀门全开?试试关小点?流量是多少?出口管道加固下?
Reply #42020-05-06
之前出口流量在170左右,额定流量400,怀疑是回流汽蚀。然后把阀门开大后依旧没有消除
Reply #52020-05-06
一般进口全开,出口开小。即使有回路,也是如此。
Reply #62020-05-06
温度对汽蚀影响还是较大的,看介质中有无容易汽化的轻组分
Reply #72020-05-06
汽蚀,建议增加进口压力。另外选泵流量过大。
Reply #82020-05-09
103℃是什么介质?泵入口已经有汽化现象了吧?入口压力多少? 额定400,实际170,此泵选大了,应该有更低型号的泵型
Reply #92020-06-09
已经103℃了,水都气化了
Reply #102020-06-10
噼里啪啦应是汽蚀声音,关小出口阀门声音应随之减轻或消失,1是增加进口压力,2是关小出口阀门,3是关闭回流线,4检查入口过滤器
Reply #112020-06-10
原因:1、有可能是汽蚀,103度极易汽化;2、是否有蒸汽管线阀门内漏,导致气体传入循环液中

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