天堂卫士 发表于 2008-6-27 14:29

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 ]

0141271 发表于 2008-6-27 14:45

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

天堂卫士 发表于 2008-6-27 15:34

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。

天堂卫士 发表于 2008-6-27 15:41

照片


fengchunlijdb 发表于 2008-6-27 15:49

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?

zhurq 发表于 2008-6-27 15:54

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。

天堂卫士 发表于 2008-6-27 16:13

箱体内部参数

箱体内部结构图

天堂卫士 发表于 2008-6-27 16:30

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。

erdgzw 发表于 2008-6-27 16:32

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。

天堂卫士 发表于 2008-6-27 16:33

30-B-01B

附件为30-B-01B,从谱线图上看,故障和30-B-01A类似

天堂卫士 发表于 2008-6-27 16:41

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

天堂卫士 发表于 2008-6-27 16:45

振动数据

不好意思,刚才发了个乱码。。。

huang9057 发表于 2008-6-27 16:47

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

57137299 发表于 2008-6-27 17:03

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

57137299 发表于 2008-6-27 17:06

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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