Experimental Investigation on Contaminated Friction of Hydraulic Spool Valve
Source abstract
Abstract
This paper focuses on the contaminated friction of fit clearance between the spool and valve body to explore the influence principles of clamping stagnation phenomenon. From the perspective of surface morphology and size of particulates in the clearance, designing and manufacturing the valve body, rough spool, conical spool, and standard morphology spool, the test bench was built up and the curves of real-time contaminated friction in the movement of spools were obtained through experiments. The curves show that the contaminated frictions have a feature of pulsation; meanwhile, the stagnation-sensitive size of particulates is between 0.7 and 0.9 times that of clearance. Compared to the ideal morphology spool within the range of sensitive size, the contaminated fiction of rough spool is increased, whereas the lower limit of stagnation-sensitive size range of particulates on conical spool is decreased. The contaminated friction is gradually increased on cis-conical spool but increased first and then decreased on invert cone spool.
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Research context
OpenAlex topics: Hydraulic and Pneumatic Systems · Mechanical stress and fatigue analysis · Tunneling and Rock Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Energy and Power Engineering College, Lanzhou University of Technology, Lanzhou 730050, China
Gansu Province Research Center of Hydraulics and Pneumatics Engineering Technology, Lanzhou 730050, China
Funding
National Natural Science Foundation of China
References (26)
Show source-provided references
1. Wang, Z.L. (2005). Research and Analysis on Valve Element Clutch of Hydraulic Diverter Valve. [Master’s Thesis, Jilin University].
2. Robust design method for the seizure problem of hydraulic slide valve
3. Characterization of surface roughness effects on pressure drop in single-phase flow in minichannels10.1063/1.1896985 ↗
4. Numerical study of solid particle erosion in hydraulic spools10.1016/j.wear.2017.09.021 ↗
5. A modeling approach for predicting the abrasive particle motion during chemical mechanical polishing10.1115/1.2768614 ↗
6. A numerical study on the effects of 2d structured sinusoidal elements on fluid flow and heat transfer at microscale10.1016/j.ijheatmasstransfer.2012.10.004 ↗
7. Pressure-driven water flows in trapezoidal silicon microchannels10.1016/S0017-9310(99)00148-9 ↗
8. Contaminant Lock Force and Filter Cake Forming Mechanism of Hydraulic Spools Valves
9. Study on the Contamination Wear Failure of Hydraulic Valve and the Influencing Factors
10. Experimental study of the flow in the gap of needle valve
11. Research on Particle Distribution in Valve Chamber and Clearance of Servo Spool
12. Contaminant Lock in Spool Type Directional Control Valves-Theory and Experimental Verification
13. Study on the Effect of Spool’s Microscopic Surface on Micro-flow in Valve gap
14. Heat transfer in particulate flows with direct numerical simulation (DNS)10.1016/j.ijheatmasstransfer.2008.07.023 ↗
15. Immersed boundary methods10.1146/annurev.fluid.37.061903.175743 ↗
16. Variational implementation of immersed finite element methods10.1016/j.cma.2012.04.001 ↗
17. Direct simulation of initial value problems for the motion of solid bodies in a Newtonian fluid Part 1. Sedimentation10.1017/S0022112094000285 ↗
18. A discrete numerical model for granular assemblies10.1680/geot.1979.29.1.47 ↗
19. A fibre-optic oil condition monitor based on chromatic modulation10.1088/0957-0233/4/5/011 ↗
20. Kwon, K.O., Kong, S.H., Han, H.G., Yoon, E.-S., Myshkin, N.K., Markova, L.V., and Semeniouk, M.S. (2000). On-Line Measurement of Contaminant Level in Lubricating Oil. (6,151,108[P]), U.S. Patent.
21. Edmonds, J., Resner, M.S., and Shkarlet, K. (2000, January 25). Detection of Precursor Wear Debris in Lubrication Systems. Proceedings of the 2000 IEEE Aerospace Conference Proceedings (Cat No 00TH8484), Big Sky, MT, USA.
22. Proposal for optimization of spool valve flow force based on the MATLAB-AMESim-FLUENT joint simulation method10.1109/ACCESS.2018.2846589 ↗
23. Failure Prevention of Hydraulic System Based on Oil Contamination10.1007/s40032-012-0032-2 ↗
24. Design of the Microfluidic Chip of Oil Detection10.4028/www.scientific.net/AMM.117-119.517 ↗
25. Capacitive Coulter Counting: Detection of Metal Wear Particles in Lubricant Using a Microfluidic Device10.1088/0964-1726/18/3/037001 ↗
26. Yang, X.J. (2005). Theoretical and Experimental Equipment Research on the Influence of Solid Particle Impurities on Piston Ring-Cylinder Liner Lubrication and Wear. [Ph.D. Thesis, Zhejiang University].