CN103115846B - Visualization test device for flow form of inner and outer oil films of dynamic-pressure and static-pressure floating ring bearing - Google Patents
Visualization test device for flow form of inner and outer oil films of dynamic-pressure and static-pressure floating ring bearing Download PDFInfo
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- CN103115846B CN103115846B CN201310026456.0A CN201310026456A CN103115846B CN 103115846 B CN103115846 B CN 103115846B CN 201310026456 A CN201310026456 A CN 201310026456A CN 103115846 B CN103115846 B CN 103115846B
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- floating ring
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Abstract
The invention relates to a visualization test device for the flow form of inner and outer oil films of dynamic-pressure and static-pressure floating ring bearings. A main shaft is provided with a pair of radial-thrust integral floating ring bearings; each radial-thrust integral floating ring bearing comprises a floating ring and a transparent outer bearing shell; the both ends of the main shaft are provided with test table supporting bearings; the rightmost end of the main shaft is provided with a driving coupler; the inner oil film is formed between the main shaft and the floating ring, and the outer oil film is formed between the outer bearing shell and the floating ring; the outer bearing shell and the floating ring are provided with oil supply systems which supply oil to inner and outer oil cavities; end oil discharge and return systems are arranged between the main shaft and the floating ring and between the outer bearing shell and the floating ring; the axial center of the right end of the main shaft is provided with radial and axial hole slots; the hole slots are internally provided with holes which are respectively communicated with the radial and axial inner oil films, and built-in optical fiber cameras which shoot the flow form of the inner oil films by rotating with the main shaft; the outer surface of the outer bearing shell is provided with a rotating railway along a peripheral direction; and the rotating railway is provided with a high-speed outer oil film camera. The visualization test device disclosed by the invention can be used for simultaneously carrying out image acquisition on the flow form of the inner and outer oil films for analysis.
Description
Technical field
The present invention relates to a kind of dynamic and static pressure floating-ring bearing ectonexine oil film fluidised form visual test device.
Background technology
Adopting floating ring dynamic and hydrostatic bearing is the effective means that improves Rotor-Bearing System rotating speed as supporting, is subject to the great attention of domestic and international academia and business circles.Floating-ring bearing internal layer oil film is to be to carry out work with floating ring speed with the speed sum work of main shaft and floating ring, outer oil film.Because the inside and outside layer of floating ring dynamic and hydrostatic bearing oil film often arranges dark oil pocket, shallow oil pocket and sealing oil edge, and the relative main shaft of floating ring, the relative floating ring of outer bearing shell exist eccentricly when work, cause diverse location oil film thickness difference larger.Along with the raising of the speed of mainshaft, internal layer oil film, outer oil film diverse location can present different fluidised forms, i.e. the mixing pattern of laminar flow, turbulent flow and laminar flow turbulent flow.For the fluidised form of zones of different, in the time setting up oil film governing equation and boundary condition, to adopt different mathematical model ability and actual conditions to match.The differentiation of the inside and outside layer of floating-ring bearing oil film diverse location fluidised form and the foundation of corresponding theory model need to be tested to support; Oil film fluidised form visual test device can reflect the situation of change of laminar flow, turbulent flow and zone of transition intuitively, and boundary condition and the parameter under different working conditions summarized in application image collection, recognition methods.A kind of reasonably test unit of design draws test findings, extremely important for proof theory model.
At present for the visual easy realization of fluidised form of fluid in relatively-stationary pipeline, but not too easily realize for floating-ring bearing internal layer oil film (main shaft and floating ring all rotate), outer oil film (floating ring rotates, bearing shell static) the visual of fluidised form.
Summary of the invention
The invention provides a kind of dynamic and static pressure floating-ring bearing ectonexine oil film fluidised form visual test device, can carry out the image acquisition of internal layer oil film, outer oil film fluidised form simultaneously, for different fluidised forms and the flowing state transition of analyzing oil film, the situation of comparison research laminar flow, turbulent flow and laminar flow turbulent mixture flowing state transition, the result of test unit test can proof theory computation model and result of calculation thus.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: dynamic and static pressure floating-ring bearing ectonexine oil film fluidised form visual test device, comprise main shaft, a pair of radial thrust one floating-ring bearing is installed between two spacing shaft shoulders of main shaft, radial thrust one floating-ring bearing comprises floating ring and transparent outer bearing shell, main shaft two ends are provided with testing table spring bearing, and main shaft low order end is provided with driving shaft coupling; Between main shaft and floating ring, form internal layer oil film, floating ring inside surface offers four groups of internal layer oil pockets, and every group of internal layer oil pocket all sets gradually dark chamber, shallow chamber and sealing oil edge, forms the dynamic and static pressure effect of internal layer oil film; Between outer bearing shell and floating ring, form outer oil film, outer inner surface of bearing bush offers four groups of outer oil pockets, and every group of outer oil pocket all sets gradually dark chamber, shallow chamber and sealing oil edge, forms the dynamic and static pressure effect of outer oil film; Outer bearing shell and floating ring are provided with the oil supply system to inside and outside layer oil pocket fuel feeding, be provided with end and let out return oil system between main shaft and floating ring, outer bearing shell and floating ring; The right-hand member axle center place of main shaft is provided with radially, longitudinal slot, in hole slot, offer hole respectively with radially, axially internal layer oil film communicates and is provided with built-in optical fiber video camera in described hole slot and rotates internal layer oil film fluidised form is made a video recording with main shaft; The outside of outer bearing shell is along the circumferential direction provided with rotation track, and outer oil film high-speed camera is set on rotation track.
Oil supply system comprises the radial direction oil hole in the dark chamber of the inside and outside layer of the connection arranging on floating ring oil pocket, and outer bearing shell is provided with the oil supplying hole being communicated with outer oil pocket; On floating ring, be provided with vertically axial oil supplying hole, axially oil supplying hole is inner is communicated with the radial direction oil hole on floating ring, and axially oil supplying hole outer end is communicated with outer oil back chamber.
End is let out return oil system and is comprised the inside and outside oil back chamber that is arranged on floating ring both sides and surrounds with outer bearing shell, and outer bearing shell centre is provided with the center spill port being communicated with interior oil back chamber; Outer bearing shell and radial thrust one floating-ring bearing are radially provided with the draining gap of draining from inside to outside.
Between He Qian chamber, dark chamber and be provided with ladder transition between shallow chamber and sealing oil edge.
The also supporting friction torque test device that is provided with, is provided with radially, axial excitation charger.
Outer bearing shell adopts transparent glass material to make.
The present invention can carry out the image acquisition of internal layer oil film, outer oil film fluidised form simultaneously, for different fluidised forms and the flowing state transition of analyzing oil film, the situation of comparison research laminar flow, turbulent flow and laminar flow turbulent mixture flowing state transition, the result of test unit test can proof theory computation model and result of calculation thus.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is right view of the present invention.
Embodiment
Embodiment: as shown in Figure 1, 2, dynamic and static pressure floating-ring bearing ectonexine oil film fluidised form visual test device, comprise main shaft 3, a pair of radial thrust one floating-ring bearing is installed between two spacing shaft shoulders of main shaft 3, radial thrust one floating-ring bearing comprises floating ring 2 and transparent outer bearing shell 1, and outer bearing shell 1 adopts transparent glass material to make.Main shaft 3 two ends are provided with testing table spring bearing 6, and main shaft 3 low order ends are provided with and drive shaft coupling 7; Between main shaft 3 and floating ring 2, form internal layer oil film, floating ring 2 inside surfaces offer four groups of internal layer oil pockets, and every group of internal layer oil pocket all sets gradually dark chamber, shallow chamber and sealing oil edge, form the dynamic and static pressure effect of internal layer oil film; Between outer bearing shell 1 and floating ring 2, form outer oil film, outer bearing shell 1 inside surface offers four groups of outer oil pockets, and every group of outer oil pocket all sets gradually dark chamber, shallow chamber and sealing oil edge, forms the dynamic and static pressure effect of outer oil film; Outer bearing shell and floating ring are provided with the oil supply system to inside and outside layer oil pocket fuel feeding, be provided with end and let out return oil system between main shaft 3 and floating ring 2, outer bearing shell 1 and floating ring 2; The right-hand member axle center place of main shaft 3 is provided with radially, longitudinal slot, in hole slot, offer hole respectively with radially, axially internal layer oil film communicates, and the built-in optical fiber video camera 5 that gathers internal layer oil-film images is set in this hole slot; The outside of outer bearing shell 1 is along the circumferential direction provided with rotation track 9, and outer oil film high-speed camera 4 is set on rotation track 9, carries out the shooting of outer oil film diverse location oil film fluidised form.Radially internal layer oil film and outer oil film adopt four groups of oil recess structures, and every group of oil film wedge is all provided with He Qian chamber, dark chamber and sealing oil edge, and oil supply hole is communicated with dark chamber, and fluid flows to shallow chamber by dark chamber and finally flows to sealing oil edge.In Fig. 1,12 is fuel feeding direction, and 13 is oil return direction.
Oil supply system comprises the radial direction oil hole in the dark chamber of the inside and outside layer of the connection arranging on floating ring 2 oil pocket, and outer bearing shell 1 is provided with the oil supplying hole being communicated with outer oil pocket; On floating ring 2, be provided with vertically axial oil supplying hole, axially oil supplying hole is inner is communicated with the radial direction oil hole on floating ring 2, and axially oil supplying hole outer end is communicated with outer oil back chamber.
End is let out return oil system and is comprised the inside and outside oil back chamber that is arranged on floating ring 2 both sides and surrounds with outer bearing shell 1, outer bearing shell 1 centre is provided with the center spill port being communicated with interior oil back chamber, and outer bearing shell 1 and radial thrust one floating-ring bearing are radially provided with the draining gap of draining from inside to outside.
Between He Qian chamber, dark chamber and be provided with ladder transition between shallow chamber and sealing oil edge.Lubricating oil flows into inside and outside layer oil film through outer bearing shell 1, under quiescent conditions, just axle and floating ring can be held up, and in the time of work, can ensure sufficient fuel feeding.Between He Qian chamber, the dark chamber of floating-ring bearing and all adopt ladder transition between shallow chamber and sealing oil edge, main shaft will produce dynamic pressure while rotation, make inside and outside layer of oil film diverse location have different fluidised forms.
The present invention is the supporting friction torque test device 8 that is provided with also, is provided with radially exciting charger 11, axial excitation charger 10.
Claims (6)
1. dynamic and static pressure floating-ring bearing ectonexine oil film fluidised form visual test device, it is characterized in that: comprise main shaft, a pair of radial thrust one floating-ring bearing is installed between two spacing shaft shoulders of main shaft, radial thrust one floating-ring bearing comprises floating ring and transparent outer bearing shell, main shaft two ends are provided with testing table spring bearing, and main shaft low order end is provided with driving shaft coupling; Between main shaft and floating ring, form internal layer oil film, floating ring inside surface offers four groups of internal layer oil pockets, and every group of internal layer oil pocket all sets gradually dark chamber, shallow chamber and sealing oil edge, forms the dynamic and static pressure effect of internal layer oil film; Between outer bearing shell and floating ring, form outer oil film, outer inner surface of bearing bush offers four groups of outer oil pockets, and every group of outer oil pocket all sets gradually dark chamber, shallow chamber and sealing oil edge, forms the dynamic and static pressure effect of outer oil film; Outer bearing shell is provided with the oil supply system to outer oil pocket fuel feeding, and floating ring is provided with the oil supply system to internal layer oil pocket fuel feeding, is provided with end and lets out return oil system between main shaft and floating ring, outer bearing shell and floating ring; The right-hand member axle center place of main shaft is provided with radially, longitudinal slot, in hole slot, offer hole respectively with radially, axially internal layer oil film communicates, in described hole slot, be provided with built-in optical fiber video camera and rotate internal layer oil film fluidised form is made a video recording with main shaft; The outside of outer bearing shell is along the circumferential direction provided with rotation track, and outer oil film high-speed camera is set on rotation track.
2. dynamic and static pressure floating-ring bearing ectonexine oil film fluidised form visual test device according to claim 1, it is characterized in that: oil supply system comprises the radial direction oil hole in the dark chamber of the inside and outside layer of the connection arranging on floating ring oil pocket, and outer bearing shell is provided with the oil supplying hole being communicated with outer oil pocket; On floating ring, be provided with vertically axial oil supplying hole, axially oil supplying hole is inner is communicated with the radial direction oil hole on floating ring, and axially oil supplying hole outer end is communicated with outer oil back chamber.
3. dynamic and static pressure floating-ring bearing ectonexine oil film fluidised form visual test device according to claim 2, it is characterized in that: end is let out return oil system and comprised the inside and outside oil back chamber that is arranged on floating ring both sides and surrounds with outer bearing shell, and outer bearing shell centre is provided with the center spill port being communicated with interior oil back chamber; Outer bearing shell and radial thrust one floating-ring bearing are radially provided with the draining gap of draining from inside to outside.
4. dynamic and static pressure floating-ring bearing ectonexine oil film fluidised form visual test device according to claim 3, is characterized in that: between He Qian chamber, dark chamber and be provided with ladder transition between shallow chamber and sealing oil edge.
5. dynamic and static pressure floating-ring bearing ectonexine oil film fluidised form visual test device according to claim 4, is characterized in that: the also supporting friction torque test device that is provided with, is provided with radially, axial excitation charger.
6. dynamic and static pressure floating-ring bearing ectonexine oil film fluidised form visual test device according to claim 5, is characterized in that: outer bearing shell adopts transparent glass material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310026456.0A CN103115846B (en) | 2013-01-24 | 2013-01-24 | Visualization test device for flow form of inner and outer oil films of dynamic-pressure and static-pressure floating ring bearing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310026456.0A CN103115846B (en) | 2013-01-24 | 2013-01-24 | Visualization test device for flow form of inner and outer oil films of dynamic-pressure and static-pressure floating ring bearing |
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| CN103115846A CN103115846A (en) | 2013-05-22 |
| CN103115846B true CN103115846B (en) | 2014-11-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103364172B (en) * | 2013-07-15 | 2015-07-08 | 哈尔滨工业大学 | Point contact area lubricating oil film flow field viewer |
| CN104502092B (en) * | 2014-12-11 | 2018-02-27 | 江苏大学 | A kind of vertical visualization oil film dynamic test device |
| CN104539833A (en) | 2015-01-07 | 2015-04-22 | 京东方科技集团股份有限公司 | Electronic device |
| CN108788878B (en) * | 2018-05-04 | 2019-07-16 | 青岛科技大学 | A kind of driving static-pressure lead screw pair of nut |
| CN114679002A (en) * | 2022-01-21 | 2022-06-28 | 扬州大学 | Radial-thrust dynamic pressure floating ring and magnetic suspension supporting electric spindle system |
| CN114523416B (en) * | 2022-03-14 | 2023-05-09 | 浙江杰克智能装备有限公司 | Dynamic pressure main shaft assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201016707Y (en) * | 2006-10-19 | 2008-02-06 | 上海大学 | Sliding bearing full oil film distribution image pick device |
| JP5004219B2 (en) * | 2007-03-27 | 2012-08-22 | 株式会社安川電機 | Oil film dielectric breakdown evaluation system |
| CN101852592A (en) * | 2010-06-10 | 2010-10-06 | 常州大学 | Heavy-duty optical elastohydrodynamic oil film measuring device |
| CN102319907A (en) * | 2011-08-22 | 2012-01-18 | 郑州大学 | High-speed floating ring bearing-rotor system with independent oil supplies for inner films and outer films |
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