Experimental study on the seal fluid excitation control technology based on a magneto-rheological (MR) damper

GUO Yongxue,HE Lidong,LI Kuan

Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (22) : 144-148.

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PDF(1246 KB)
Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (22) : 144-148.

Experimental study on the seal fluid excitation control technology based on a magneto-rheological (MR) damper

  • GUO Yongxue,HE Lidong,LI Kuan
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Abstract

In order to alleviate the seal fluid excitation in a turbo-machinery, a sealing system was designed and built with a current-adjustable magnetorheological damper installed on an experiment bench. Through experiments, the vibration inhibition by the magnetorheological damper at different rotating speed and eccentricity was achieved. The results show that the magnetorheological damper can reduce the seal fluid induced vibration and the vibration suppression effect is better with the increase of the damper working current. The decline of the vibration is up to 65.02%. A switch control strategy based on Labview was applied in the vibration control system. The working current of the damper was adjusted actively according to the vibration amplitude of the rotor monitored in real time.In the switch control experiment on sealing system, a fine vibration suppression effect was obtained and the maximum reduction can reach 68.71%.

Key words

seal fluid excitation / magnetorheological damper / vibration switch control;active control technology

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GUO Yongxue,HE Lidong,LI Kuan. Experimental study on the seal fluid excitation control technology based on a magneto-rheological (MR) damper[J]. Journal of Vibration and Shock, 2019, 38(22): 144-148

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