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Method of inspection for valve leakage
The author: Time:2020/8/4

  检查阀门的渗漏方法有气体检漏法和液体检漏法两种。气体检漏常用的是气泡法。试验时,先在阀门外表涂上一层皂液,阀门如有渗漏,便在渗漏处产生气泡,显然,这是一种极其简便的检漏方法,它能迅速、准确地显示渗漏部位,其渗漏量可视气泡大小粗略估算;
  另一种是浸没法。即将阀门浸没在液体内,如有缝隙,也会有气泡产生。只要将气泡全部收集,便能精确测量出渗漏量,但渗漏的部位不易测定。
  液体检漏法的优点是可用肉眼直接观察阀门的渗漏的部位。若试验用介质为水,只要观察水滴的数目,即能判定渗漏的部位和渗漏量;若试验用介质带有碱性或酸性,那么,只要把酸碱反应涂料或试纸涂复在被检表面,若该部分有介质渗漏,则这些涂料或试纸便会变色,据此,我们便能检查出阀门的渗漏情况。

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