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Vibrations of water hydraulic systems – an experimental approach

机译:水压系统的振动–实验方法

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This paper presents an experimental study of the vibrations induced both by cavitating and by non-cavitating flow in a hydraulic installation that comprises the main elements of a water hydraulic system. The cavitation was triggered by progressively closing a butterfly valve. The vibrations were measured on the pump, on the bearings housing, on the pump drive motor, and at nine measurement points located upstream and downstream of the main elements of the installation. The measurements were carried out at different flow rates obtained at different openings of the butterfly valve. The results suggest that the phenomena that take place inside the pump and inside the bearings cause vibrations having frequencies of up to 10 kHz. The results also indicate that the cavitation that occurs at the butterfly valve causes vibrations of high frequency, above 3 kHz, that have a distinct peak at about 18 kHz. These results could be useful in establishing proper maintenance plans for hydraulic installations.
机译:本文对由水力系统主要组成部分的液压装置中的空化和非空化流动引起的振动进行了实验研究。逐渐关闭蝶阀会触发气蚀。在泵上,轴承箱上,在泵驱动电机上以及在设备主要部件上游和下游的9个测量点处测量了振动。以在蝶阀的不同开口处获得的不同流速进行测量。结果表明,在泵内部和轴承内部发生的现象会引起频率高达10 kHz的振动。结果还表明,在蝶阀处发生的气蚀会引起3 kHz以上的高频振动,该振动在约18 kHz处具有明显的峰值。这些结果对于为液压装置建立适当的维护计划很有用。

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