摘要
为了准确把握埋地油罐所用高液位阀的关阀过程,建立了阀门关闭过程的运动学方程,求解得到了关阀速度、关阀时间及关阀加速度方程。阀芯的关阀运动方程表明:在控制阀的主体结构确定以后,节流孔的大小将影响关阀时间、关阀速度及关阀加速度,且节流孔越大,关阀时间越短。利用Fluent软件对高液位控制阀的关阀过程进行了数值模拟,结果表明:高液位阀的关阀过程是一个加速度逐渐减小的加速运动,且在关阀过程中产生了水击现象,因此采用导杆的形式来控制阀芯的运动方向非常必要。
In order to accurately control the high level（HL） valve shutoff process for buried oil tank, the kinematics equation is established and then solved to get the valve shutoff speed, time and acceleration equations. The kinematics equation of valve core shutoff shows that, when the main structure of the control valve is determined, the valve shutoff speed, time and acceleration will be influenced by the orifice size- the larger the orifice is, the shorter the valve shutoff time is. The HL valve shutoff process is numerically simulated using the FLUENT software. The results show that the valve shutoff process presents an accelerated motion in which acceleration decreases gradually, and a water hammer phenomenon occurs. Therefore, it is necessary to adopt the guide rod to control the movement direction of the valve core.
出处
《油气储运》
CAS
北大核心
2015年第7期704-708,共5页
Oil & Gas Storage and Transportation
关键词
埋地油罐
液位控制
关阀运动
数值模拟
buried oil tank
liquid level control
valve shutoff motion
numerical simulation
