Finite Element Analysis And Optimization Research Of Wormlike Seal Structure Of High Pressure Vessel

High-pressure vessels are a very common type of pressure equipment and are widely used in today's industrial production and various fields of people's lives.The DN1160 pressure sintering furnace is a high-pressure vessel,and its working mode is intermittent.Due to the need for frequent opening and closing of the furnace door in the process of operation,so it has high requirements on the sealing performance of the high-pressure vessel sealing structure.With the rapid development of science and technology,pressure vessels not only made outstanding contributions to the industrial field,but also gave strong support to social and economic development after the industrial revolution.The function of the sealing structure in the high pressure vessel is to ensure the normal operation of the equipment and improve the energy utilization rate.Therefore,in order to improve the sealing level and prolong the service life,it is very important and meaningful to analyze the mechanical characteristics of the sealing performance of the sealing structure.According to the development status of domestic and foreign research,it is a trend to apply wormlike sealing ring to quick-opening sintering furnace,which has the advantages of self-tightening of the sealing ring and simple structure.Firstly,the sintering process and the structure and working conditions of the DN1160 pressure sintering furnace were introduced.Then it discusses the material use,applicable environment and sealing principle of the wormlike sealing ring.And it was expounded in detail the selected model of super-elastic body finite element nonlinear theory.Secondly,the finite element analysis software ANSYS Workbench16.0 was used to build a two-dimensional plane finite element model of the wormlike sealing ring structure.And the maximum equivalent stress and maximum contact stress of the wormlike sealing ring under different influencing factors were analyzed and compared,such as system internal pressure,friction factor,and sealing gap and the diameter of the notch.In order to improve the sealing performance of the sealing structure,improve the energy utilization rate and increase the service life,the results were analyzed and the optimal values of external parameters were determined.Finally,on the premise of optimizing the external parameters,a high-strength alloy steel wire ring was embedded in the wormlike sealing ring in combination with the principle of metal-coated composite material sealing,which achieved the optimization of the wormlike seal ring structure.The composite wormlike sealing ring not only has the large deformation characteristics of rubber,but also has the high strength of metal materials.The simulation results show that,compared with the common wormlike sealing ring,the metal composite wormlike sealing ring greatly reduced Von Mises stress and improved the local strength of the seal ring,thus achieving the objective of the optimization research.