摘要
蒸汽发生器气动控制阀是核电站一回路系统中调节流量、压力的核心部件之一,其调节和响应性能对回路系统的稳定运行具有关键作用。由于蒸汽发生器气动控制阀要求调节精度高和响应特性快,以具体的某个项目中涉及到的核电蒸汽发生器气动控制阀为研究对象,通过静态试验和动态响应试验,开展了针对影响气动控制阀动态响应特性的潜在因素的研究,评估了蒸汽发生器气动控制阀的静态性能与动态响应性能。首先,测量了基本误差、回差、死区、始终点偏差和额定行程偏差,对气动控制阀的静态性能进行了验证;然后,开展了标准压力、减少进气压力和增大进气压力三种工况的动态响应实验;最后,研究了定位器进气调节、执行器密封完整性和阀杆摩擦力等因素对气动控制阀动态响应特性的影响。研究结果表明:气动控制阀最大基本误差在1.0%以内,死区在0.2%以内,小于合格标准值;动态响应达到设定值的时间均远小于指标要求值,且没有观察到超调现象。该研究提出了如何提高控制阀性能的措施,包括优化定位参数和减少机械摩擦,对提高气动控制阀的调节和响应性能具有一定的参考价值。
The pneumatic control valve of the steam generator is one of the core components in the primary circuit system of a nuclear power plant for regulating flow and pressure.Its regulation and response performance plays a crucial role in the stable operation of the loop system.Since the pneumatic control valve of steam generator has the requirements of high adjustment accuracy and fast response characteristics,the pneumatic control valve of nuclear power steam generator involved in a specific project was taken as the research object,and the potential factors affecting the dynamic response characteristics of the pneumatic control valve were studied through static test and dynamic response test,and the static performance and dynamic response performance of the pneumatic control valve of steam generator were evaluated.Firstly,the basic error,hysteresis,dead zone,initial and final point deviation,and rated travel deviation were measured to verify the static performance of the pneumatic control valve.Then,the dynamic response experiments under three working conditions were carried out:standard pressure,reduced intake pressure and increased intake pressure.Finally,the effects of positioner inlet pressure regulation,actuator seal integrity,and valve stem friction on dynamic response characteristics were systematically analyzed.The research results show that the maximum basic error of the control valve is within 1.0%,and the dead zone is within 0.2%,both of them are lower than the acceptable standard values.The time taken for the dynamic response to reach the set value is significantly shorter than the required specification,and no overshoot phenomenon is observed.This study proposes the measures to improve the performance of the air-operated control valve,including optimizing positioning parameters and reducing mechanical friction,it provides a useful reference for enhancing the regulation and response performance of air-operated control valves.
作者
洪雪娇
刘平
向方娜
岳阳
顾纯宇
高志岗
汪栩涵
林振浩
钱锦远
HONG Xuejiao;LIU Ping;XIANG Fangna;YUE Yang;GU Chunyu;GAO Zhigang;WANG Xuhan;LIN Zhenhao;QIAN Jinyuan(SUFA Technology Industry Co.,Ltd.,CNNC,Suzhou 215129,China;Institute of Advanced Equipment,Zhejiang University,Hangzhou 310027,China;Hangzhou Valvever Intelligent Technology Co.,Ltd.,Hangzhou 310058,China)
出处
《机电工程》
北大核心
2025年第10期1924-1930,2000,共8页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(52175067)。
关键词
气压元件
气动控制阀
蒸汽发生器
动态响应特性
静态特性
调节精度
性能评估
pneumatic element
air-operated control valves
steam generator
dynamic response characteristics
static characteristics
adjustment accuracy
performance evaluation
