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根据系统抽真空要求,完成管路设计选型与抽空能力计算。针对混和型介质及系统防火防爆的特点,优先选用干式真空泵。通过搭建真空管路系统,针对不同抽速真空泵、不同管路长度、不同抽空容器、不同混和介质开展多组试验。试验结果分析表明,干式真空泵能够满足抽空要求;管路中最小管径的管路长度对抽真空时间有较大影响;在本次试验条件下,环境温度变化对抽空时间有一定影响。
According to the system vacuum requirements, to complete the pipeline design selection and pumping capacity calculation. For mixed media and system fire and explosion-proof features, preferred dry-type vacuum pump. Through the establishment of vacuum piping system for different pumping speed vacuum pump, different pipeline length, different evacuated containers, different mixtures of media to carry out multi-group test. The analysis of the test results shows that the dry vacuum pump can meet the requirements of evacuation. The length of the pipe with the smallest pipe diameter has a significant influence on the evacuation time. Under this test condition, the change of ambient temperature has an impact on the evacuation time.