往复式压缩机气流脉动抑制方法研究OA北大核心CSTPCD

For the problem of airflow pulsation in the pipeline system of reciprocating compressor,an experimental platform was set up to test and simulate the impacts of the buffer tank volume,buffer tank outlet pipeline angle and buffer tank outlet pipeline combination expansion chamber filter on pressure pulsation,and analyze the length and diameter ratio of buffer tank and the length and diameter ratio of the connecting pipe between the compressor and the buffer tank on airflow pressure pulsations in pipeline systems.The results show that increasing the volume of the buffer tank can effectively reduce the airflow pressure pulsation of the pipeline,the buffer tank increases from 0.0083 m3 to 0.094 m3,and the pressure pulsation value decreases by 40%;By changing the angle of the buffer tank outlet pipeline,the airflow pressure pulsation of the pipeline can be reduced,when the angle of the outlet pipeline is 60°,the pressure pulsation value decreases by 44%;By installing the combined expansion chamber filter on the outlet pipeline after the buffer tank,the airflow pulsation of the pipeline also can be effectively reduced;and the pressure pulsation value decreases by 59%;Increasing the diameter of the buffer tank is more effective than increasing its length for the pressure pulsation reduction in the pipeline,when the buffer tank L/D ratio is between 1.5～2.0,the suppression effect of pressure pulsation of the pipeline is the best,when the length of the connecting pipe L/D ratio is between 1.25～1.75,the suppression effect of the airflow pulsation in the pipeline is the best.The results of the study can provide a reference for solving the problem of pipeline vibration in actual engineering.