罗茨风机箱体振动大
本帖最后由 wdhd 于 2016-5-31 10:11 编辑大家好：
我是新手，接触振动分析没多长时间，话题中有错误的地方请见谅！
我公司有两台罗茨风机，机器运行一年多，箱体振动值一直很大，有何办法使得箱体振动值下降？箱体是否存在故障？
下表是罗茨风机18个测点的速度有效值。（所有仪器CSI 2130 进行测量）
其中M1H、M1V、M1A马达外侧测点（电机非驱动端），M2H、M2V、M2A为马达内侧（靠近皮带轮）F2V、F2H、F2A、FIV、FIH、FIA、F1V、F1H、F1A、FOH、FOV、FOA十二个测点为箱体的十二个测点。
设备编号 测点振动值 mm/sec RMS
测量日期M1HM1VM1AM2HM2VM2AF2VF2HF2AFIVFIHFIA
F1V
F1H
F1AFOV
FOH
FOA
30-B-01A08.4.102.592.281.792.151.871.554.173.784.863.963.645.043.684.525.504.184.615.14
30-B-01A08.4.282.381.961.391.941.671.234.313.854.545.374.064.664.594.025.205.633.945.09
30-B-01A08.5.143.361.941.902.351.621.375.454.795.615.625.015.265.394.945.984.894.706.34
30-B-01A08.5.193.532.131.582.291.611.175.675.084.785.834.555.245.124.616.355.634.665.96
30-B-01A08.5.272.631.801.171.711.751.115.554.924.715.304.655.104.854.636.775.464.655.79
30-B-01A08.6.53.211.861.582.341.841.295.474.974.615.314.775.174.974.535.615.244.605.79
30-B-01A08.6.261.951.731.401.911.631.036.274.744.976.204.575.065.585.375.745.475.244.96
30-B-01B08.4.103.634.473.303.492.953.327.703.755.304.953.734.775.174.485.225.895.725.53
30-B-01B08.4.282.732.531.382.242.251.327.344.284.965.384.295.834.864.864.866.116.474.81
30-B-01B08.5.142.422.991.582.252.051.597.093.634.804.173.614.704.485.175.115.595.425.08
30-B-01B08.5.192.983.541.502.712.191.446.853.514.083.963.494.554.635.375.166.465.125.68
30-B-01B08.5.272.773.081.473.622.051.586.343.363.353.243.314.444.614.935.766.344.354.76
30-B-01B08.6.52.183.521.712.631.941.955.253.024.033.823.464.535.095.345.605.845.845.65
30-B-01B08.6.262.812.761.332.262.001.376.272.963.856.613.294.384.273.865.034.443.854.78
注：
1.由于箱体的温度过高，半个月前，对两台罗茨风机加了两台油冷却器。（照片是一个月前照的，若需要的话，可以去现场拍最新照片）
2.箱体和皮带轮是相连的，去年年修把箱体和皮带轮外罩脱开。（30-B-01A换了一个外罩，30-B-01B没有进行更换）
如何正确的对罗茨风机进行改造？目前罗茨风机箱体振动值偏高，如何降低箱体振动值？
箱体振动值较高是否存在故障？谱线图、箱体结构图、照片、及设备相关资料我会传上来！
谢谢
[ 本帖最后由 fengchunlijdb 于 2008-6-27 14:51 编辑 ]
你好，我就在你江对岸，同样也做振动分析，希望交个朋友.
我们公司也有罗茨鼓风机四台，对其诊断也颇有难度，不晓得你们的构造是如何，对于
罗茨来说，基础结构，对于振动改善有很大的的效果 我公司在苏州，家在通州，这两台罗茨风机我测量了一年多了，照片及相关资料在进行PS处理，兆数太大。
很愿意交你这朋友。
照片
地脚是否有胶墩支撑，如有，测量各胶墩振动值，更换振动值较大的胶墩后，再测量一次，看振动值是否发生了变化？ 进气缓冲罐下方支撑有点薄弱，在排气缓冲罐出口附近对排气管道增加支撑，可能会有效果。
箱体内部参数
箱体内部结构图30-B-01A
附件为30-B-30A的谱线图从FFT谱线上看，主要频率是是115.23Hz和85.56Hz的倍数。 楼主能否将一楼的表格调整一下，后面的看不到。
等待楼主的更多资料。
30-B-01B
附件为30-B-01B，从谱线图上看，故障和30-B-01A类似振动数据
设备编号 测点振动值 mm/sec RMS测量日期M1HM1VM1AM2HM2VM2AF2VF2HF2AFIVFIHFIA
F1V
F1H
F1AFOV
FOH
FOA
30-B-01A08.4.102.592.281.792.151.871.554.173.784.863.963.645.043.684.525.504.184.615.1430-B-01A08.4.282.381.961.391.941.671.234.313.854.545.374.064.664.594.025.205.633.945.0930-B-01A08.5.143.361.941.902.351.621.375.454.795.615.625.015.265.394.945.984.894.706.3430-B-01A08.5.193.532.131.582.291.611.175.675.084.785.834.555.245.124.616.355.634.665.9630-B-01A08.5.272.631.801.171.711.751.115.554.924.715.304.655.104.854.636.775.464.655.7930-B-01A08.6.53.211.861.582.341.841.295.474.974.615.314.775.174.974.535.615.244.605.7930-B-01A08.6.261.951.731.401.911.631.036.274.744.976.204.575.065.585.375.745.475.244.9630-B-01B08.4.103.634.473.303.492.953.327.703.755.304.953.734.775.174.485.225.895.725.5330-B-01B08.4.282.732.531.382.242.251.327.344.284.965.384.295.834.864.864.866.116.474.8130-B-01B08.5.142.422.991.582.252.051.597.093.634.804.173.614.704.485.175.115.595.425.0830-B-01B08.5.192.983.541.502.712.191.446.853.514.083.963.494.554.635.375.166.465.125.6830-B-01B08.5.272.773.081.473.622.051.586.343.363.353.243.314.444.614.935.766.344.354.7630-B-01B08.6.52.183.521.712.631.941.955.253.024.033.823.464.535.095.345.605.845.845.6530-B-01B08.6.262.812.761.332.262.001.376.272.963.856.613.294.384.273.865.034.443.854.78
振动数据
不好意思，刚才发了个乱码。。。 你得把你这台设备的各项参数报出来如螺杆转速、头数，测点轴承型号，如果带有增速装置还得弄清传动比，齿数等等，总之，做分析前建议先充分了解设备 是啊看基础比较薄弱，还有进出口也好像支撑较弱。并且好像管路没有接橡胶接头啊比较受管路影响 对了 看你的设备清单，你这个设备是SSP固聚用的，你们是什么化工单位啊，呵呵苏州亚东？？
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