| Water hydraulic transmission technology is an important part of the future development of hydraulic transmission technology,which has been applied in many fields.Among them,seawater desalination technology based on water hydraulic pressure is one of the important means to solve the freshwater resource crisis in the future.As one of the core components of reverse osmosis desalination system,energy recovery device is developing towards integration,miniaturization and integration.Our team innovatively proposed a pump motor integrated energy recovery device for reverse osmosis desalination system.However,due to the poor lubricity,low viscosity,strong corrosion and high vaporization pressure of water as the hydraulic working medium,the problems of natural seawater are more complex,and the traditional oil pressure components can not be applied in this device.Therefore,in order to realize the application of the energy recovery device in the reverse osmosis desalination system and promote the development of water hydraulic technology to a certain extent,the slipper pair,one of its three key friction pairs,is designed with seawater as the working medium,and its bearing characteristics are analyzed.Firstly,based on the literature research,the basic structure of the slipper pair is determined,the design principle of the slipper pair is discussed,and the spiral damping groove slipper structure with CFRP as the matrix material is determined.Then,according to the previous research,the basic technical indexes for the design of the slipper are determined,and the motion analysis and force analysis of the slipper are carried out,and the complete design process and calculation process of the damping groove slipper pair are given.Because the trial and error method can not take into account the larger stiffness and smaller power loss at the same time,this paper takes the maximum support stiffness and the minimum support power loss as the objective function,and obtains the optimal structural parameters of spiral damping groove slipper pair by particle swarm optimization algorithm.The results show that the structural performance of the optimized slipper pair is greatly improved.In order to observe the working performance of the slipper pair under various unknown conditions,the water film flow field model of the optimized slipper pair was established,and the bearing characteristics of the slipper pair were simulated under different working pressures and different media.The dynamic change process of water film is analyzed,and the dynamic change equation of water film thickness under pressure impact is obtained.Due to the extremely thin water film of the device,higher requirements are put forward for pollution control.Finally,the anti pollution ability of the slipper pair is evaluated,and the pollution control strategy is proposed.The research results of this paper have good engineering application value,which lays a certain foundation for the application of this device in reverse osmosis seawater system,and also provides a certain reference value for the development of domestic water hydraulic technology. |
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