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气动阀门执行器故障解决

气动阀门执行器故障解决

作者:admin    来源:未知    发布时间:2020-08-13 10:04    浏览量:
气动阀门执行器故障解决
Troubleshooting of pneumatic valve actuator
 
 
   气动阀门执行器故障解决都会去选择比较适合的气动执行器,性价比较高的气动执行器,那么首先就要了解执行器的种类,执行器可分为气动执行器与电动执行器,比较常用的执行器也就是这两种,我们选购的时候都会选择气动执行器。
Pneumatic valve actuator fault resolution will go to choose a more suitable pneumatic actuator, pneumatic actuator with higher cost performance, then we must first understand the types of actuators, actuators can be divided into pneumatic actuators and electric actuators, the more commonly used actuators are these two types, we will choose pneumatic actuators when we choose.
 
 
  然后我们要根据气源的大小来选着执行器,转动阀门所需的扭矩,大小转不懂,太大阀门寿命不长。一般给扭矩留出30%的余量就OK了。气动执行器从文字上就能看出这类是通过气压力来操作的执行装置。与电动执行器先比,能适应更多的环境之中,合理的结构让其负载力更大,实现了对高力矩输出的目标。同时比电动执行器而言,动作迅速,反应也较快。当然,电动执行器也有众多优势是气动执行器所不能比拟的,气动执行器的长处也是当下电动执行器所不具备的,俩者都有各自缺点与优点。因此,在未来不断进行科技下,两者的性价比将会得到更大的提高。
 Then we have to choose the actuator according to the size of the air source. The torque required to turn the valve is too large to understand. If the valve is too large, the service life of the valve is not long. Generally, 30% allowance for torque is OK. Pneumatic actuator can be seen from the text that this kind of actuator is operated by pneumatic force. Compared with the electric actuator, it can adapt to more environments, and its reasonable structure makes its load force larger, and achieves the goal of high torque output. At the same time, compared with the electric actuator, the action is faster and the reaction is faster. Of course, the electric actuator also has many advantages that the pneumatic actuator can't compare with. The advantages of the pneumatic actuator are also those that the current electric actuator does not have. Both of them have their own disadvantages and advantages. Therefore, under the continuous development of science and technology in the future, the cost-effectiveness of the two will be greatly improved.
 
 
  其次我们对于安装的平台进行考核,每个环境选择执行器,对于执行器都是有一个标准的,我们要根据阀门找到对应的标准就不会错。而作为一种气动执行机构,其实它在阀门中表现出来的作用就是让阀装置在使用的时候更加的方便。而由于气动执行器的接入使得使得这种阀门在管道中运作的时候能够带动起阀体部件的快速连动,具有一定的自动化效果,而且由于执行机构本身是具有能源驱动的,所以对于阀门的阀体启闭件的驱动也是具有一定的价值的。这种阀门由于流体阻力小被使用到流体管道中起到开启和关闭的作用。
 Secondly, we assess the installation platform, select the actuator for each environment, there is a standard for the actuator, we should find the corresponding standard according to the valve. As a kind of pneumatic actuator, its function in valve is to make the valve device more convenient in use. Because of the connection of the pneumatic actuator, the valve can drive the valve body parts to move quickly when it operates in the pipeline, which has a certain automation effect. Moreover, because the actuator itself is energy driven, it has certain value for the drive of the valve body opening and closing parts. This kind of valve is used in the fluid pipeline for opening and closing due to its small fluid resistance.
 
  常见的故障有阀体不动作、阀门无法关到零位、气动执行器无反馈信号、信号压力不稳定等。还有一些较为特殊的故障,比如气动执行器控制阀振动。接下来我们主要分析特殊故障控制阀振动的原因以及处理措施。
The common faults are that the valve body does not act, the valve cannot be closed to zero position, the pneumatic actuator has no feedback signal, and the signal pressure is unstable. There are some special faults, such as pneumatic actuator control valve vibration. Next, we mainly analyze the causes and treatment measures of the special fault control valve vibration.
 
  气动阀门执行器故障解决
 Troubleshooting of pneumatic valve actuator
 
  气动执行器控制阀振动会造成控制系统无法正常工作,其振动原因主要有以下3个:
 The vibration of the control valve of pneumatic actuator will cause the control system to fail to work normally. The vibration causes are as follows:
 
  1、外来振源,即该设备管道本身就有振动。
 1. External vibration source, that is, the equipment pipe itself has vibration.
 
  2、气动执行器控制阀的选用不符合选型的要求,比如流量特性不适合、阀口径偏大、弹簧刚度较差等等,造成控制阀振动。
 2. The selection of pneumatic actuator control valve does not meet the selection requirements, such as unsuitable flow characteristics, valve diameter is too large, poor spring stiffness and so on, resulting in control valve vibration.
 
  3、受到流体侵蚀从而产生振动。
3. It is eroded by the fluid and produces vibration. 
 
  气动阀门执行器故障解决处理措施:如果发现是设备管道本身就有的振动,可以对设备管道进行清扫重新调整,使其振动消失。如果是气动执行器控制阀本身问题,可以采用限流孔板去吸收部分压降,降低节流速度,克服阀振动,且限流孔板还可以改变系统固有的频率,避免控制阀固有频率与系统固有频率相接近而产生振动。
Troubleshooting measures for pneumatic valve actuator: if it is found that the vibration is inherent in the equipment pipeline, the equipment pipeline can be cleaned and readjusted to make the vibration disappear. If it is the problem of the control valve of pneumatic actuator, the limiting orifice plate can be used to absorb part of the pressure drop, reduce the throttle speed and overcome the valve vibration. Moreover, the restriction orifice plate can also change the natural frequency of the system to avoid vibration caused by the natural frequency of the control valve close to the natural frequency of the system.
 
  而作为其中的启闭装置,这种阀门安装的气动执行机构具有利用压缩气体,推动活塞让阀门内部与之相连的阀杆起到作用,驱动球阀球体进行运动,从而起到了调节管道流体介质的作用。而作为其中的启闭件,这种球体绕球阀的轴线作旋转运动,对于介质的输送有一定的效果。球阀的特点在于耐磨、密封性能较好,并且由于阻力较小,所以内部阀体受到的磨损较小,使用寿命也比较长,这样的特点让这种气动阀门在管道的使用上更加的“得心应手”。
As one of the opening and closing devices, the pneumatic actuator installed in the valve has the function of using compressed gas to push the piston to make the valve stem connected with it play a role in driving the ball valve ball to move, thus playing the role of regulating the fluid medium in the pipeline. As one of the opening and closing parts, the ball rotates around the axis of the ball valve, which has a certain effect on the transmission of medium. The ball valve is characterized by wear resistance, good sealing performance, and due to the small resistance, the internal valve body is subject to less wear and service life
 
 
 
 
 
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