Particle and Filters

Considering the increasing complexity of hydraulic systems the design of adequate filtration concepts becomes more and more difficult. This complexity is a challenge for designers because until now the design of a filtration system has mainly been based on experience. To get better predictions and insights especially in complex hydraulic systems and different filtration concepts the DSHplus particle and filter simulation has been developed.

The new DSHplus particle and filtration simulation offers the possibility to simulate the dynamic distribution of particles inside fluid power systems. On the one hand this allows the design of an ideal filtration concept for reliable plant operation, and on the other hand it also reveals new possibilities for a virtual condition monitoring development.

The particle simulation model itself is characterised by particle sources and sinks. Particle sources can be breather filters or cylinders, that accumulate particles from the surrounding environment, and pumps and valves, that generate particles through internal component wear. Contrarily particle sinks, such as filters or reservoirs, reduce the number of particles in the system. Next to these two main component groups there are also transfer elements such as pipes, which determine the dynamic behaviour of the particle distribution within the hydraulic system. The development engineer is able to check the particle size distribution at each point of the system, thus he can keep the purity levels low at locations of sensitive components, such as servo valves. He is also able to analyze the amount of absorbed contamination in different filter elements, which leads to a better planning of maintenance intervals and results in shorter downtimes of the plant. Another application of the DSHplus particle and filtration simulation is the virtual analysis of initial cleaning procedures before the system’s commissioning.