Analysis Of Thermoplastic Air Seal Performance Of Marine Main Engine Auxiliary Blower

With the development of large-scale and high-speed development of the main engine auxiliary blower of the ship,the sealing technology and sealing method of the air seal of the auxiliary blower have been paid more and more attention.However,the gas seal often suffers from damage during use due to improper use or environmental changes,such as temperature rise and excessive force.In this paper,combined with work practice,the key components of gas seal are taken as research objects,and the temperature,equivalent stress,contact stress and deformation state in the process of gas seal work are studied,which are divided into the following parts.Firstly,the research and development status of air seal system at home and abroad are introduced,the characteristics and application of different sealing technologies are analyzed,and the development and application of finite element analysis theory are expounded,and the theoretical basis of finite element method to deal with the non-linear contact problem and heat conduction problem of key components of air seal is expounded.Secondly,based on finite element simulation platform,the air seal of auxiliary blower of marine main engine is established.Finite element analysis model of key parts of the system;stress field and deformation state of PTFE seal ring and friction ring under different friction coefficient and different rotating speed conditions are analyzed;temperature field model of PTFE seal ring,friction ring and central axis is analyzed,temperature distribution of friction ring and central axis under different friction coefficient and different rotating speed conditions is obtained,and friction with different rotating speed is also obtained.The test results under the coefficients are verified.It shows that the higher the friction coefficient,the higher the temperature of the central axis,will affect the safe operation of the main auxiliary blower.At the same time,the corresponding solutions are put forward.Finally,the author summarizes my work,points out the shortcomings of the work and prospects for the future.The research content of this paper provides a certain guiding role for the design and use of sealing components in the future,and has certain theoretical and practical significance.