蒸汽疏水阀波纹管滞后性研究  

Study on the Hysteresis of the Thermostatic Bellows Steam Trap

作　　者：李树勋[1] 徐登伟[1] 把桥环[1] 

机构地区：[1]兰州理工大学,甘肃兰州730050

出　　处：《流体机械》2011年第1期6-10,共5页Fluid Machinery

基　　金：甘肃省自然基金项目(2008GS00561);兰州理工大学优秀青年教师培养计划资助(Q201002)

摘　　要：针对波纹管蒸汽疏水阀漏汽率高的问题,基于传热学原理应用波纹管能量方程和内充介质能量方程,建立了波纹管热动元件的滞后模型,设计了相应的实验系统,进行不同参数下的实验研究。分析结果表明,波纹管热动元件的时间常数cτ与内充介质的热容和体积成正比,与本身的表面积及其散热系数成反比。提出了一种中空圆筒形波纹管热动元件结构,可有效解决波纹管热动元件动作滞后的问题,为提高波纹管蒸汽疏水阀的性能提供参考。Aiming at the problem of high steam leakage rate for the thermostatic bellows steam traps.Based on the principles of heat transfer,hysteretic model of the thermostatic bellows is set up by using the bellows energy equation and the silting medium energy equation.Corresponding experimental system is designed,and experimental studies with different parameters is carried out.The results show that the timeconstant τc of the thermostatic bellows is in direct proportion with the heat capacity and volume of silting medium,but inversely proportional to its superficial area and heat transfer coefficient.A new hollow circular cylindrical structure was designed,the hysteretic problem of thermostatic bellows can be solved,and referenced for improve the performance of thermostatic bellows steam traps.

关 键 词：疏水阀 波纹管 滞后模型 试验研究 

分 类 号：TK264.9[动力工程及工程热物理—动力机械及工程]