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2020-01-05View Original

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一般在化工生产中,流动的水突然关阀门,导致产生很大的压力,会导致管线出现振动现象发生,水锤个人专业水平低,不能从太深的专业知识去了解,从实际中,分析是由于前面的流体突然停止,由于水不可压缩,但是后面管道里面的水还有动能,集中向前传递,产生很大的压力,是由于以前分散的动能,在停止后集中传递到最前面产生很高的静压力,是这样吗?????????各位海友不要笑我啊????????
Reply #22020-01-05
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Reply #32024-10-30
是要考虑到水的压缩性的。当阀门突然关闭紧靠阀门处管段水体首先发生变化,流速变为零,压力上升,与此同时水体被压缩,水的密度变大,从而腾出了空间得以容纳上游管段有速度流动来的水体。就是说,一开始上游管段仍未受到水锤的影响。之后依次一段段管道速度 压力相继发生同样的变化,这样,一段接一段地将阀门关闭的影响向上游传播,压力增加就跟波一样传播。

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