Research Article
Critical Hydraulic Eccentricity Estimation in Vertical Turbine Pump Impeller to Control Vibration
Table 4
Vibration displacement when the impeller is on hydraulic unbalance.
| Sr. no | Hydraulic eccentricity (μm) | Bell mouth | Shaft | Impeller | Suction bearing | Discharge bend | Motor |
| Maximum vibration displacement (μm) | 1 | 0 (design) | 166 | 78 | 74 | 60 | 20 | 44 | 2 | 200 | 204 | 125 | 117 | 93 | 30 | 71 | 3 | 300 | 223 | 149 | 139 | 109 | 36 | 84 | 4 | 400 | 242 | 172 | 160 | 126 | 41 | 98 | 5 | 500 | 261 | 196 | 182 | 142 | 47 | 112 | 6 | 688 | 296 | 239 | 222 | 173 | 57 | 137 | Maximum vibration displacement (μm) | 1 | 0 (design) | 236 | 138 | 132 | 111 | 27 | 47 | 2 | 200 | 273 | 185 | 174 | 143 | 38 | 74 | 3 | 300 | 292 | 208 | 196 | 159 | 43 | 88 | 4 | 400 | 310 | 232 | 217 | 176 | 49 | 101 | 5 | 500 | 329 | 255 | 239 | 192 | 54 | 115 | 6 | 688 | 364 | 298 | 279 | 222 | 64 | 141 |
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