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氣動閥門執行器故障解決

氣動閥門執行器故障解決

作者:admin????來源:????發布時間:2020-08-13 10:04????瀏覽量:
氣動閥門執行器故障解決
Troubleshooting of pneumatic valve actuator
 
 
   氣動閥門執行器故障解決都會去選擇比較適合的氣動執行器,性價比較高的氣動執行器,那么開始就要了解執行器的種類,執行器可分為氣動執行器與電動執行器,比較常用的執行器也就是這兩種,我們選購的時候都會選擇氣動執行器。
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.
 
 
  然后我們要根據氣源的大小來選著執行器,轉動閥門所需的扭矩,大小轉不懂,太大閥門壽命不長。一般給扭矩留出30%的余量就OK了。氣動執行器從文字上就能看出這類是通過氣壓力來操作的執行裝置。與電動執行器先比,能適應更多的環境之中,合理的結構讓其負載力更大,實現了對高力矩輸出的目標。同時比電動執行器而言,動作迅速,反應也較快。當然,電動執行器也有眾多優勢是氣動執行器所不能比擬的,氣動執行器的長處也是當下電動執行器所不具備的,倆者都有各自缺點與優點。因此,在未來不斷進行科技下,兩者的性價比將會得到更大的提高。
 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.
 
 
  其次我們對于安裝的平臺進行考核,每個環境選擇執行器,對于執行器都是有一個標準的,我們要根據閥門找到對應的標準就不會錯。而作為一種氣動執行機構,其實它在閥門中表現出來的作用就是讓閥裝置在使用的時候更加的方便。而由于氣動執行器的接入使得使得這種閥門在管道中運作的時候能夠帶動起閥體部件的快速連動,具有一定的自動化效果,而且由于執行機構本身是具有能源驅動的,所以對于閥門的閥體啟閉件的驅動也是具有一定的價值的。這種閥門由于流體阻力小被使用到流體管道中起到開啟和關閉的作用。
 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.
 
  常見的故障有閥體不動作、閥門無法關到零位、氣動執行器無反饋信號、信號壓力不穩定等。還有一些較為特殊的故障,比如氣動執行器控制閥振動。接下來我們主要分析特殊故障控制閥振動的原因以及處理措施。
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.
 
  氣動閥門執行器故障解決
 Troubleshooting of pneumatic valve actuator
 
  氣動執行器控制閥振動會造成控制系統無法正常工作,其振動原因主要有以下3個:
 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、外來振源,即該設備管道本身就有振動。
 1. External vibration source, that is, the equipment pipe itself has vibration.
 
  2、氣動執行器控制閥的選用不符合選型的要求,比如流量特性不適合、閥口徑偏大、彈簧剛度較差等等,造成控制閥振動。
 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、受到流體侵蝕從而產生振動。
3. It is eroded by the fluid and produces vibration. 
 
  氣動閥門執行器故障解決處理措施:如果發現是設備管道本身就有的振動,可以對設備管道進行清掃重新調整,使其振動消失。如果是氣動執行器控制閥本身問題,可以采用限流孔板去吸收部分壓降,降低節流速度,克服閥振動,且限流孔板還可以改變系統固有的頻率,避免控制閥固有頻率與系統固有頻率相接近而產生振動。
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.
 
  而作為其中的啟閉裝置,這種閥門安裝的氣動執行機構具有利用壓縮氣體,推動活塞讓閥門內部與之相連的閥桿起到作用,驅動球閥球體進行運動,從而起到了調節管道流體介質的作用。而作為其中的啟閉件,這種球體繞球閥的軸線作旋轉運動,對于介質的輸送有一定的效果。球閥的特點在于耐磨、密封性能較好,并且由于阻力較小,所以內部閥體受到的磨損較小,使用壽命也比較長,這樣的特點讓這種氣動閥門在管道的使用上更加的“得心應手”。
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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