高压管道的氦泄漏试验

Helium Leak Test of the High Pressure Piping

高压有毒流体,可燃流体的管道强度试验完毕后,依据规范的要求还必须进行泄露性试验。一般气体(空气)进行高压的管道气体泄漏试验,试验压力很高(一般为管道设计压力)非常危险。采用氦气作为试验介质,利用氦气检漏的高灵敏度在满足管系统高密封要求的同时,可大大降低泄漏试验压力,从而降低气压泄漏试验的危险性。

The high-pressured, toxic, inflammable fluid, after the hydraulic testing finished, also must be carried on the gaseous Leak test based on the standard request. For the common gas （air）, the high test pressure is very dangerous extremely （generally for pipeline design pressure）. While the helium leak test with high sensitivity satisfied the piping system high seal request, may reduce the gaseous leak test pressure greatly, thus reduced the risk of the gaseous leak test.