长输管道真空干燥真空泵有效抽速的研究

Study on the Net Speed of Vacuum Pump in Long-distance Pipeline Vacuum Drying

分析了长输管道真空干燥中真空泵组的有效抽速受管道流阻的影响,给出了有效抽速的计算方法,并用现场实验对其进行了验证。结果表明,处于管道出气口一端的压力小于管道另一端的压力。研究结果对进一步进行长输管道真空干燥抽气时间的预测研究提供了重要的依据。

The influence of pipeline flow resistance on net speed of vacuum pump is analyzed in long-distance pipeline vacuum drying,the calculation method of net speed of vacuum pump is given and checked up with site experiment. The experimental results show that the pressure at the outlet end of pipeline is lower than that of the other end. It is considered that the results are important base to further study and predicate the air exhausted time for vacuum drying of long-distance pipeline.