国产精品久久久久婷婷二区次_日韩美女视频一区二区在线观看_日韩一区欧美二区_久久亚洲捆绑美女_亚洲精品欧美二区三区中文字幕_懂色av一区二区在线播放_久久久亚洲午夜电影_国内不卡的二区三区中文字幕_日韩欧美一级特黄在线播放_亚洲高清一区二区三区_一区二区三区四区蜜桃_亚洲18女电影在线观看_亚洲一区成人在线_亚洲一区二区三区四区的_亚洲国产视频在线_亚洲亚洲人成综合网络

Leak detection method of vacuum equipment

Release date: August 31, 2011 reading times: 35

During the use of vacuum equipment, if it is found that the vacuum cannot be pumped up or the vacuum degree cannot be maintained for a certain period of time, it may be the leakage of pipeline and connecting parts or the failure of vacuum pump.For leakage, a simple inspection method is to fill the containers and pipes with gas, ensure that there are micro positive pressure inside them, use small sprinkler for watering flowers, and then apply detergent, laundry powder and soap solution, then spray to each part of the pipeline and container. At this time, if a certain part froth, it is indicated that this part is a leak point, then it is disposed to eliminate leakage.Until a vacuum can be drawn.