CAJ | 학술논문

采用加速度传感器对一比转数为65的离心泵关死工况下的流动诱导振动进行了测试，并对试验结果进行了详细分析。试验结果表明：①轴向振动加速度脉动呈现一定的弱周期性规律，径向振动加速度脉动没有任何周期性；②蜗壳隔舌处的振动加速度脉动幅值最大；③各测点的最大振动加速度均出现在1400 Hz附近，大约是叶片通过频率的10倍；④蜗壳5断面处的轴向振动程度是最为剧烈的，而7断面处的径向振动程度是最弱的。
채용가속도전감기대일비전수위65적리심빙관사공황하적류동유도진동진행료측시，병대시험결과진행료상세분석。시험결과표명：①축향진동가속도맥동정현일정적약주기성규률，경향진동가속도맥동몰유임하주기성；②와각격설처적진동가속도맥동폭치최대；③각측점적최대진동가속도균출현재1400 Hz부근，대약시협편통과빈솔적10배；④와각5단면처적축향진동정도시최위극렬적，이7단면처적경향진동정도시최약적。
The flow induced vibration in a centrifugal pump at SOC (Shut-off Condition) ,whose specific speed is 65 ,is tested by u‐sing acceleration sensors ,and the test results are analyzed carefully .The main conclusions are as follows .① The axial vibration presents weak periodicity ,while the radial vibration has no periodicity .② The fluctuation amplitude at volute tongue is the biggest .③ The biggest acceleration of each test point is at 1 400 Hz ,which is about 10 times blade passing frequency .④ The axial vibration at Section 5 of volute is the most violent ,while the radial vibration at Section 7 is weakest .