Hydraulic System Contamination Control Theory Research Based On Proactive Maintenance

This paper studies the method and steps of setting up the object cleaning degree in proactive maintenance of the hydraulic system, and advances the best objective cleanliness theory and the optimized method. Those parts in the contamination control system are divided into two kinds——the contamination generator and the contamination controller., and the standard simulation modules are established in Lab VIEW. This paper establishes a new theoretical model of filter with effective filtration ratio by introduction the contaminant-repeat-filtration factor., realizing the simulation computation of the pollutant carrying capacity, the real-time differential pressure, and the contamination control system's visualized simulation and the quantitative evaluation. The simulation research indicates that under different pollution invaded distribution condition, those filters in diverse position contributes differently to the realization and the maintenance of system's objective cleanliness. The disposition of those filters should be optimized according to the actual condition to reduce filters' maintenance cost. By proposing the first flow theory and the second flow theory, this paper obtains the distribution of the particles in the oil through getting the number of the particles in two size via a complete test, which expands the application scope of the filter diaphragm jamming method and reduces the measuring error. And DW1 oil contamination class tester is developed.