A cavitation quantitative testing device and method for radial sliding bearings
A technology of radial sliding and testing equipment, which is applied in the direction of mechanical bearing testing, etc., and can solve problems such as the inability to determine the distribution of bubbles
Active Publication Date: 2019-12-10
SOUTHEAST UNIV
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Problems solved by technology
The signal is measured by the acoustic emission sensor, so that the frequency of cavitation can also be determined, but it can only be qualitatively analyzed for cavitation, and the distribution of air bubbles on the surface of the sliding bearing cannot be determined
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[0015] Such as figure 1 As shown, a cavitation quantitative testing device for radial sliding bearings, the base 1 is provided with a bottom plate 2, and the electric spindle 6 is fixed on the bottom plate 2 through a support 5; the main shaft 12 is directly threaded with the electric spindle 6, and the journal collar 13 is installed on the main shaft 12, and is pressed by the round nut 10 on the left; the transparent bearing bush 15 is sleeved on the journal collar 13 and fits with the journal collar 13; the left and right sides of the transparent bearing bush 15 are respectively provided with bearing bushes The left half of the assembly part 28 and the right half of the bearing bush assembly part 27, the rubber sealing ring 14 is used to seal between the transparent bearing bush 15 and the bearing bush assembly part; the fastening bolt 9 is connected with the nut 8 and pressed against the left half of the bearing bush assembly part and the right half of the bearing bush asse...
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The invention discloses a device and method for a cavitation quantitative test of a radial sliding bearing. The test device includes a frequency converter, a motorized spindle, a spindle, a journal ferrule, a transparent bearing bush, bearing bush assembling components, rubber sealing rings, a water circulation system, an air compressor, a loading device and a high-speed camera; the transparent bearing bush sleeves the journal ferrule, and left and right sides of the transparent bearing bush are provided with the bearing bush assembling components and are sealed by the sealing rings; the journal ferrule is mounted on the spindle, and the spindle is connected with the motorized spindle driven by the frequency converter; the loading device loads radial force on the bearing bush, the bearing bush assembling components are provided with water inlets / outlets, and the air compressor injects air into the device; and the high-speed camera is adopted to record bubbles generated between the bearing bush and the journal ferrule, and the cavitation of two-phase flow is analyzed and calculated. The device for the cavitation quantitative test of the radial sliding bearing can visually, quantitatively and reliably test the cavitation rate of the high-speed radial sliding bearing.
Description
technical field [0001] The invention relates to a cavitation quantitative testing device and method, in particular to a cavitation quantitative testing device and method of a radial sliding bearing. Background technique [0002] Traditional test methods for judging cavitation of radial sliding bearings include vibration technology and acoustic emission technology. [0003] 1) Vibration technology: In the time domain, the amount of vibration can be described by parameters such as total root mean square level, crest factor, probability density and kurtosis. The cavitation occurring in the sliding bearing can be marked by the cavitation vibration rate spectrum of the sliding bearing at various speeds, but this method can only do a qualitative analysis on the incipient cavitation. How do the bubbles form? What is the distribution pattern? unknown. [0004] 2) Acoustic emission technology: Acoustic emission is a transient stress / displacement wave phenomenon of a type of transi...
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IPC IPC(8): G01M13/04
CPCG01M13/04
Inventor 蒋书运张赤斌林晓辉刘鑫
Owner SOUTHEAST UNIV