工业加热
工業加熱
공업가열
INDUSTRIIAL HEATING
2014年
5期
57-59
,共3页
火电厂%风机%振动故障%波德图
火電廠%風機%振動故障%波德圖
화전엄%풍궤%진동고장%파덕도
thermal power plants%fans%vibration fault%bode plot
某火力发电厂对脱硫系统进行改造，在其中一台机组安装公用GGH低泄漏风机后的试运中，存在振动过大的故障。通过对该风机的振动检测，获取了包括振动趋势图、振动幅频图和振动相频图，结合振动信号的特征，对故障进行了诊断，得出了振动故障是由于引风机质量不平衡，通过加重处理后，引风机前后轴承的最大振幅由原来的接近500μm分别降低到了36μm和26μm，取得了显著的效果。
某火力髮電廠對脫硫繫統進行改造，在其中一檯機組安裝公用GGH低洩漏風機後的試運中，存在振動過大的故障。通過對該風機的振動檢測，穫取瞭包括振動趨勢圖、振動幅頻圖和振動相頻圖，結閤振動信號的特徵，對故障進行瞭診斷，得齣瞭振動故障是由于引風機質量不平衡，通過加重處理後，引風機前後軸承的最大振幅由原來的接近500μm分彆降低到瞭36μm和26μm，取得瞭顯著的效果。
모화력발전엄대탈류계통진행개조，재기중일태궤조안장공용GGH저설루풍궤후적시운중，존재진동과대적고장。통과대해풍궤적진동검측，획취료포괄진동추세도、진동폭빈도화진동상빈도，결합진동신호적특정，대고장진행료진단，득출료진동고장시유우인풍궤질량불평형，통과가중처리후，인풍궤전후축승적최대진폭유원래적접근500μm분별강저도료36μm화26μm，취득료현저적효과。
The desulfurization system was transformed in one thermal power plant, during the transformation the fan GGH which is low leakage was installed in one of the common units, there is excessive vibration fault.Through the detection of the vibration of the fan, obtains the characteristic of vibrational trend, vibration amplitude-frequency diagram and asphase-frequency vibrations diagram, diagnose the vibration fault binding characteristics of vibration signals, obtain a conclusion mass imbalance of induced draft fan let vibration fault. Through increased processing, the maximum amplitude of front and rear bearings of the induced draft fan reduced from close to 500μm to 26μm and 36μm respectively, achieved a remarkable results.
