VIBRATION CHARACTERISTICS ANALYSIS OF ROTOR-RUNNER SYSTEM UNDER FAULTY OIL COMPONENT
In the actual operation of bulb continuous unit, the rotor-runner system is easy to form friction fault between rotating parts and fixed parts allected by extermal incentives, which greatly affects the safe and stable operation of unit. Aimed at the problem of axial friction with fault receptor comp...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2023-12-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2023.06.004 |
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| _version_ | 1841534182443974656 |
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| author | WU Jing ZHANG LeiKe WANG XueNi |
| author_facet | WU Jing ZHANG LeiKe WANG XueNi |
| author_sort | WU Jing |
| collection | DOAJ |
| description | In the actual operation of bulb continuous unit, the rotor-runner system is easy to form friction fault between rotating parts and fixed parts allected by extermal incentives, which greatly affects the safe and stable operation of unit. Aimed at the problem of axial friction with fault receptor components, the unbalanced magnetic tension model under rotor composite eccentricity is conshructed, the vibration model of rotor-runner coupled bending torsional vibration with the excitation of multi-source, and its diferential motion equation are established. The dierence of vibration characteristics for converter system is studied and the nonlinear vibration characteristics of system in excitation curent, rotor and runner mass eccenticity are discussed. The results show that failure inereases the unsteady motion range of rotor and runner, causing the system to produce adverse vibration and occasion malfunetion. Meanwhile, the rotor under the same operating conditions and parameters shows a greater amplitude strength than the runmer, which should be more attention. With considering the torsional degrees of freedom, the rotor amplitude amplifies under mass eccentricity variations, resulting in the rub-impact malfunction. In addition, when the runner mass eccentricity is developed to a certain extent, the uncertain random hydraulic force at the blade will induce instability of system. The results can provide useful references for safe operation and stability analysis of bulb tubular unit. |
| format | Article |
| id | doaj-art-7dea400d8fe74c0d9c4bcae68a170add |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2023-12-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-7dea400d8fe74c0d9c4bcae68a170add2025-01-15T02:45:06ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692023-12-01451293130055273485VIBRATION CHARACTERISTICS ANALYSIS OF ROTOR-RUNNER SYSTEM UNDER FAULTY OIL COMPONENTWU JingZHANG LeiKeWANG XueNiIn the actual operation of bulb continuous unit, the rotor-runner system is easy to form friction fault between rotating parts and fixed parts allected by extermal incentives, which greatly affects the safe and stable operation of unit. Aimed at the problem of axial friction with fault receptor components, the unbalanced magnetic tension model under rotor composite eccentricity is conshructed, the vibration model of rotor-runner coupled bending torsional vibration with the excitation of multi-source, and its diferential motion equation are established. The dierence of vibration characteristics for converter system is studied and the nonlinear vibration characteristics of system in excitation curent, rotor and runner mass eccenticity are discussed. The results show that failure inereases the unsteady motion range of rotor and runner, causing the system to produce adverse vibration and occasion malfunetion. Meanwhile, the rotor under the same operating conditions and parameters shows a greater amplitude strength than the runmer, which should be more attention. With considering the torsional degrees of freedom, the rotor amplitude amplifies under mass eccentricity variations, resulting in the rub-impact malfunction. In addition, when the runner mass eccentricity is developed to a certain extent, the uncertain random hydraulic force at the blade will induce instability of system. The results can provide useful references for safe operation and stability analysis of bulb tubular unit.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2023.06.004Oil receiverCoupled bending-torsional vibrationBulb tubular unitCompound eccentricityExcitation current |
| spellingShingle | WU Jing ZHANG LeiKe WANG XueNi VIBRATION CHARACTERISTICS ANALYSIS OF ROTOR-RUNNER SYSTEM UNDER FAULTY OIL COMPONENT Jixie qiangdu Oil receiver Coupled bending-torsional vibration Bulb tubular unit Compound eccentricity Excitation current |
| title | VIBRATION CHARACTERISTICS ANALYSIS OF ROTOR-RUNNER SYSTEM UNDER FAULTY OIL COMPONENT |
| title_full | VIBRATION CHARACTERISTICS ANALYSIS OF ROTOR-RUNNER SYSTEM UNDER FAULTY OIL COMPONENT |
| title_fullStr | VIBRATION CHARACTERISTICS ANALYSIS OF ROTOR-RUNNER SYSTEM UNDER FAULTY OIL COMPONENT |
| title_full_unstemmed | VIBRATION CHARACTERISTICS ANALYSIS OF ROTOR-RUNNER SYSTEM UNDER FAULTY OIL COMPONENT |
| title_short | VIBRATION CHARACTERISTICS ANALYSIS OF ROTOR-RUNNER SYSTEM UNDER FAULTY OIL COMPONENT |
| title_sort | vibration characteristics analysis of rotor runner system under faulty oil component |
| topic | Oil receiver Coupled bending-torsional vibration Bulb tubular unit Compound eccentricity Excitation current |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2023.06.004 |
| work_keys_str_mv | AT wujing vibrationcharacteristicsanalysisofrotorrunnersystemunderfaultyoilcomponent AT zhangleike vibrationcharacteristicsanalysisofrotorrunnersystemunderfaultyoilcomponent AT wangxueni vibrationcharacteristicsanalysisofrotorrunnersystemunderfaultyoilcomponent |