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机械密封中存在的问题都有哪些

天华科技 次浏览 2017-24-11

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  (二)动密封点失效而导致的走漏问题。动密封点失效的原因大致包含密封结构、轴的影响以及介质的影响、密封的端面四方面要素。1、密封的结构:影响密封作用的要素包含密封的起浮性,一般状况下,密封起浮性较高的资料密封作用也会相对较高,一般运用的四氟塑料密封圈在起浮性方面就比较差,其密封作用也是同类密封资料中最差的。2、轴的影响:轴的影响要素首要包含轴的粗细和运动两方面:首要,轴的粗细程度要与密封面相契合,如果粗细程度不满足运用要求,就可能会因为粗细的误差引发走漏;其次,在设备工作过程中,轴可能会跟着设备的工作而滚动,如果摇摆起伏较大就可能会引发走漏,与此同时,如果滚动的速度越快,就越有可能加剧走漏的危险。3、介质的影响:介质的粘度与颗粒程度是影响走漏的关键要素,如果是易结垢且带颗粒的介质,其引发走漏的概率较大,或许粘度较低的颗粒也会简单构成走漏,可是如果是洁净的介质而且粘度较高就不会简单呈现走漏问题。与此同时,介质压力的大小也是影响走漏的重要要素,要操控好压力的大小,尽量保证压力不能太高。4、密封的端面问题:密封的端面直接影响着化工机械设备的密封作用,所以在装置时应坚持密封端面的平直度和笔直度。
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