Expansion Of High-speed Rotating Ring Seal And Experimental Research

Mechanical rotary seal is an important mechanical transmission component. With the Development of power transmission to high-speed, high-load, thus, put a higher demand on the PV value of the shaft. Ring seal is a mechanical edge seal, also the smallest form, particularly suitable for the requirements on the limited size occasions, widely used in aviation(Such as jet engines), vehicle power transmission. Through theoretical analysis, simulation analysis and experiments, study the ring's key parameters and their mutual relations, work processes and work performance, thermal analysis and failure analysis. Support the high speed and high load ring seal system design.Specific tasks are as follows:1, In order to improve the lubrication effect of the friction pair face, reducing the friction, and explore the effect of dynamic pressure on the end ring of the spiral groove. Analyze the film produced by the dynamic pressure effect and the rigidity of the film, and conduct the experiments. The results show that, due to the narrow edge of the ring, it's difficult to obtain good dynamic pressure.2, Due to the improvement of the speed and the PV value, heat comes to be a limit to its performance. So, new materials are used to reduce the friction coefficient, to improve the wear resistance. Also new seal structure is necessary to protect the oil from damage. This paper do the heat balance to the system,â‘ modeling the system with the finite element software,â‘¡calculate the convective heat of the seal's boundary and the temperature field, get the system's leakage by the iterative method,â‘¢calculate the opening gap under the heat condition by the FLUENT software.3, Due to the influence of the friction heat to the material, use the fine grid method to recalculate the surface temperature of the seal. The result shows that it is higher than the forward one, but effect a little. Prove the result is basically right.4, According to the problem of the failure control, calculate the relationship between the maximum wear brought by the seal's failure and the flow of the hydraulic system.