阀用波纹管仿真设计建模方法及其试验验证  

Modeling Method and Experimental Verification of Valve Bellows Simulation Design

作　　者：张全厚 宋林红[1] 张文良[1] 于翔麟 韩新博[1] Zhang Quanhou;Song Linhong;Zhang Wenliang;Yu Xianglin;Han Xinbo(Shenyang Academy of Instrumentation Sciences Co.,Ltd.,Shenyang 110000,China)

机构地区：[1]沈阳仪表科学研究院有限公司,沈阳110000

出　　处：《压力容器》2020年第7期52-58,共7页Pressure Vessel Technology

基　　金：国家重点研发计划项目(2018YFB2004004)。

摘　　要：国内企业主要参考EJMA标准进行金属波纹管的设计。虽然按该标准设计的金属波纹管大多能够满足工程使用的要求,但由于标准编制时参考的工程数据是以波纹管在内压工作环境时为前提条件的,所以当设计阀用金属波纹管时则不能再使用该标准。近些年,随着计算机行业的快速发展,对不能使用EJMA标准设计的波纹管,国内不少学者采用有限元法进行仿真设计,同时得到很好的应用效果。但对于仿真建模的方法和依据还没有提及。为此提出一种阀用金属波纹管仿真建模的理论依据和具体实施方法。为了验证该方法的准确度,以热油阀门金属波纹管为算例进行了刚度和强度的仿真计算,刚度仿真计算误差为9.3%,强度仿真计算误差为14.6%。该仿真结果精度能够满足工程使用的要求。Domestic enterprises mainly design metal bellows by reference to the Standards of the Expansion Joint Manufactures Association(EJMA).Although most of the metal bellows designed according to this standard can meet the requirements of engineering use,the engineering data referenced when the standard is developed is based on the premise that the bellows are in an internal pressure working environment.Therefore,when designing metal bellows for valves,this standard can no longer be used.With the rapid development of the computer industry in recent years,many domestic scholars have adopted the finite element method for the simulation design of bellows that cannot be designed using the Standards of the Expansion Joint Manufactures Association,and at the same time,they have achieved good application results.But the method and basis of simulation modeling have not been mentioned yet.To this end,a theoretical basis and specific implementation method of valve metal bellows simulation modeling was proposed in this paper.In order to verify the accuracy of this method,by using the hot oil valve metal bellows as an example,the simulation calculation of the stiffness and strength was carried out.The stiffness simulation calculation error was 9.3%,and the strength simulation calculation error was 14.6%.The accuracy of the simulation results can meet the requirements of engineering use.

关 键 词：金属波纹管 有限元 仿真建模 

分 类 号：TH703.2[机械工程—仪器科学与技术] TB115.1[机械工程—精密仪器及机械]