主营:电磁阀,气动阀,换向阀,叶片泵,气动泵,齿轮泵
所在地:
产品价格:
3033元/台(大量采购价格面议)
最小起订:
1
发布时间:
2020-05-27
有效期至:
2020-06-27
产品详细
电动调节阀使用时,若发生外漏现象,我们该如何去应对,这里给大家介绍电动调节阀外漏的五个解决方法:
电动调节阀外漏的五个解决方法之采用透镜垫密封法
对于上、下盖的密封,阀座与上、下阀体的密封.若为平面密封,在高温高压下,密封性差,引起外泄,可以改用电动调节阀透镜垫密封,能得到满意的效果。
电动调节阀外漏的五个解决方法之改变流向
置P2在阀杆端法;当△P非常大,P1又非常大时,密封P1显然比密封P2困难.因此,电动调节阀可采取改变流向的方法,将P1在阀杆端改为P2在阀杆端,这对压力高、压差大的阀是较有效的.如波纹管阀就通常应考虑密封P2。
电动调节阀外漏的五个解决方法之增加填料法
通常是采用双层或者多层混合填料的形式单纯地增加密封垫片的数量,如将3片增加到5片,来提高阀杆的密封性能,不过电动调节阀防漏效果不是很明显。
电动调节阀外漏的五个解决方法之增加密封油脂法
这种方法是针对还未使用密封油脂的阀体,可以考虑增加密封油脂来提高阀杆的密封性能的。平时日常维护电动调节阀的时候,增加补充密封油脂也是必要的维护程序之一。
电动调节阀外漏的五个解决方法之是更换石墨填料法
大量被使用的四氟填料,其适用工作温度在-20~200℃范围内,当工作温度在上限、下限变化非常大时,电动调节阀密封性能便明显下降了,且老化快,寿命短。这里推荐使用柔性石墨填料可以克服四氟填料所不能承受的困难,且使用寿命长,从而提高密封的可靠性。有很多工厂已经全部将四氟填料改为石墨填料了,甚至新购买的调节阀也将其中的四氟填料换成石墨填料后使用。但是石墨填料也有个缺点,就是回差大,初时有的还产生爬行现象,对此,生产商和使用商在设计安装电动调节阀设备时也要有所考虑。
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