超高压脉冲阀体动态强度校核分析

为了分析超高压脉冲阀填料函台阶失效引起外漏的原因,进行了组合载荷下的动态强度应力及位移计算分析,包括内压温度耦合作用、腔内脉冲压差分析和疲劳分析等。结果表明:阀体外壁保温良好时,内压是影响应力的主要因素,温度或温差对等效应力的影响是第二位的。分别按应力分类法和等效应力法判断表明,在设计和运行工况下阀体强度是足够的,原来失效处不会继续扩大,阀体不会疲劳失效而能安全持久。提出有利于预防台阶的磨损失效的建议。

Dynamic Strength Check Analysis of Super-high Pressure Valve

In order to analyze the safety of valve box of super-high pressure pulse valve as its pressurize ring was disappear and lead to leak,dynamic strength stresses and displacement under combination load were calculated.Include limited element analysis under inter pressure and temperature,pulse pressure difference analysis and fatigue analysis.The synthesize results is show that the insides pressure is major element and temperature or temperature difference caused a second influence on the equivalent stress when...