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如何防止化工离心泵管路中调节阀门的堵和卡

如何防止化工离心泵管路中调节阀门的堵和卡

作者:admin    来源:未知    发布时间:2020-08-15 14:04    浏览量:
如何防止化工离心泵管路中调节阀门的堵和卡
How to prevent plugging and clamping of regulating valve in chemical centrifugal pump pipeline
 
   化工离心泵能输送临界状态的液体。临界状态的液体,当温度升高或压力降低时,往往会汽化。为了避免由于液体的汽化使机械密封、填料密封、迷宫密封等因干摩擦而破坏,这类化工泵必须有将泵内发生的气体充分排除的结构。在应用安裝离心水泵时,配套设施管路中一般会安裝闸阀,调节阀门是常见的流量调节阀门设备,依据应用和输送机的液體不一样,调节阀门断相一部分会出現阻塞或卡死,那么怎样防止化工离心泵管路中调节阀门的堵和卡呢?以下内容将为您简单介绍,希望对您有所帮忙。
Chemical centrifugal pump can transport critical liquid. Critical state of liquid, when the temperature increases or the pressure decreases, often vaporizes. In order to avoid the destruction of mechanical seal, packing seal and labyrinth seal due to dry friction due to the vaporization of liquid, this kind of chemical pump must have a structure to fully eliminate the gas generated in the pump. When installing centrifugal pumps, the gate valves will normally be installed in the supporting facilities. The regulating valve is a common flow regulating valve device. According to the application and the liquid of the conveyer, a part of the regulating valve will be blocked or stuck. How can we prevent the plugging and clamping of the valve in the chemical centrifuge pump pipeline? The following content will be a brief introduction for you, I hope to help you.
 
1、直连改成角形法
 1. Changing direct connection into angle method
 
  直连为倒S流动性,流路繁杂,上、下容腔死区多,为媒质的沉定出示了地区。角形联接,媒质宛如穿过90℃弯管,侵蚀特性好,死区小,易设计方案成流线形。因而,应用直连的调节阀门造成轻度阻塞时可改为角形阀应用。
The direct connection is inverted-s fluidity, complicated flow path and many dead zones in upper and lower cavities, which shows the area for the settlement of the medium. Through the bend, it is easy to be eroded in the dead zone. Therefore, the application of directly connected regulating valve can be changed to angle valve when it causes slight blockage.
 
2、媒质侵蚀法
2. Medium erosion method
 
  运用媒质本身的侵蚀动能,侵蚀和带去易沉定、易阻塞的物品,进而提升阀的防堵作用。常用的方式有:改作流闭型应用;选用运动感油路板;将节流阀口放置侵蚀比较利害处,选用此法要特别注意提升节流阀件原材料的耐冲蚀工作能力。
Using the erosive kinetic energy of the medium itself, it can erode and take away the objects which are easy to settle and block, and then enhance the anti blocking effect of the valve. The commonly used methods are: change to flow closed type application; select motion sensitive oil circuit board; place the throttle valve port at the most favorable and harmful part. When using this method, special attention should be paid to improving the erosion resistance of raw materials of throttle valve parts.
 
3、外接侵蚀法
3. External erosion method
 
  对某些易沉定、带有液体颗粒物的媒质选用一般阀调整时,常常在节流阀口、导向性处阻塞,可再下阀盖底塞处外接侵蚀汽体和蒸气。当阀造成阻塞或卡死时,开启外置的汽体或蒸汽闸阀,只能在没动调节阀门的状况下进行清洗工作中,使阀一切正常
For some media which are easy to settle and contain liquid particles, when the general valve is used for adjustment, it is often blocked at the throttle port and the guiding position, and the erosive vapor and steam can be connected outside the bottom plug of the lower valve cover. When the valve is blocked or jammed, open the external steam body or steam gate valve, only when the valve is not adjusted, the valve can be cleaned normally
 
4、安裝管道过滤器法
4. Installation of pipeline filter
 
  对口径的调节阀门,特别是在是特小流量调节阀,其节流阀空隙特小,媒质中不可以有一丢丢渣物。遇此状况阻塞,在阀前管路上安裝1个过滤装置,以确保媒质顺利通过。带定位仪应用的调节阀门,定位仪工作中异常,其液压阀块节流阀口阻塞是常用的常见故障。因而,带定位仪工作中时,必需解决好气源,一般选用的方法是在定位仪前气源管道上安裝气体过滤减压阀
For the regulating valve with caliber, especially in the case of extra small flow control valve, the gap of throttle valve is very small, and there is no slag in the medium. In case of blockage in this condition, a filter device is installed on the pipeline in front of the valve to ensure the smooth passage of the medium. For the regulating valve with positioner, the positioner works abnormally, and the throttle valve port of the hydraulic valve block is blocked, which is a common fault. Therefore, when working with the locator, it is necessary to solve the problem of gas source. The general method is to install a gas filter pressure reducing valve on the gas source pipeline in front of the locator
 
5、扩大节流阀空隙法
5. Method of enlarging the clearance of throttle valve
 
  如媒质中的液体颗粒物或管路中被侵蚀掉的焊穿和锈物等因过不上节流阀口导致阻塞、卡死等常见故障,可改成节流阀空隙大的节流阀件—节流阀总面积为开窗通风、张口类的阀心、套筒规格,以其节流阀总面积集中化而并不是圆上遍布的,常见故障就能非常容易地被植物清除。要是是单、双座阀就可将柱塞泵形阀心改成“V”形口的阀心,或改为套筒阀等。
For example, if the liquid particles in the medium or the welding penetration and rust that are eroded in the pipeline can not pass through the throttle valve port, the common faults can be changed into throttle valve parts with large clearance of throttle valve - the total area of throttle valve is the valve core and sleeve specification of window ventilation and opening type. With the total area of throttle valve centralized instead of being distributed all over the circle, common faults can be very easy The ground cover is cleared by plants. If it is a single or double seat valve, the plunger pump type valve core can be changed into a "V" shaped port valve core or a sleeve valve.
 
6、清洗法
6. Cleaning method
 
  管道中的焊穿、锈迹、碎渣等在节流阀口、导向性位置、下阀盖均衡孔壁导致阻塞或卡死使阀心斜面、导向性面造成挫伤和刮痕、突面上造成压印等。这常常产生于新投用系统软件和维修后投用前期。它是常用的常见故障。遇此状况,必需卸开开展清理,祛除渣物,如突面遭受损害还应碾磨;一起将底塞开启,以冲走从均衡孔跌入下阀盖内的渣物,并对管道开展清洗。投用前,让调节阀门开全,媒质流动性过段时间后再列入一切正常运作。
The welding penetration, rust and slag in the pipeline will block or block the throttle valve port, guiding position and equalizing hole wall of the lower valve cover, which will cause contusion and scratch on the inclined plane and guiding surface of the valve center, and imprint on the protruding surface. This often occurs in the new system software and after maintenance in the early stage. It is a common fault. In this case, it is necessary to remove the slag and remove the slag. If the protruding surface is damaged, it should also be grinded; open the bottom plug together to wash away the slag falling from the equalizing hole into the lower valve cover, and clean the pipeline. Before putting into use, the regulating valve should be fully opened, and the medium fluidity should be listed into normal operation after a period of time.
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