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热油泵盘根填料的密封原理

发布时间:2019-04-01  阅读:731次
热油泵盘根填料的密封原理
 一、热油泵盘根填料的密封原理一般导热油泵使用填料密封比较多,在使用中取得了很好的效果。盘根填料的密封原理主要取决于迷宫效应和轴承效应。迷宫效应:轴在微观下表面非常的不平整,与盘根只能部分贴合,而部分未接触,所以在盘根和轴之间着微小的间隙,像迷宫一样,带压介质在间隙中多次被节流,从而达到密封的作用。轴承效应:在盘根填料和轴之间会存在着一层薄薄液膜,使盘根填料和轴类似于滑动轴承,起到了一定的润滑作用,从而避免了盘根和轴的过度磨损。

A heat pump, the packing sealing principle of general heat conducting oil pump packing more,good results have been achieved in use. Packing sealing principle depends mainly on the effect of labyrinth and bearing effect. Effect of Labyrinth: axis in the micro scale surface is veryuneven, and the packing only partially attached, and some did not contact, so between packingand shaft with tiny gap, like a maze, the pressure medium in the gap has been the throttle, so as to achieve the sealing function. Bearing effect: between packing and shaft there is a thin layer ofmembrane, the packing and the shaft is similar to the sliding bearing, played some lubrication function, so as to avoid excessive wear of packing and shaft.
二、热油泵盘根填料对材料的要求由于受密封介质的温度、压力、PH,以及设备的线速度、表面粗糙度、同轴度、径跳、偏心等因素,就要求盘根填料具有以下特点:Two, heat pump packing requirements for materials due to temperature, pressure, PH by the sealing medium, as well as equipment line speed, surface roughness, coaxial, jump, eccentricity,requires the packing filler has the following characteristics:
1、盘根填料有一定的弹塑性

1, packing filler has certain elastic plastic
2、盘根填料化学稳定性

2, packing chemical stability
3、盘根填料不渗透性

3, packing impermeability
4、盘根填料自润滑性

4, packing the self lubrication
5、盘根填料耐温性

5, packing temperature resistance
6、盘根填料拆装方便

6, packing and convenient assembly and disassembly
7、盘根填料制造简单,价格低廉。

7, packing filler has the advantages of simple manufacture, low price.
上述材料特性直接影响着盘根填料的密封性能和使用寿命,而能完全符合上述所有性能的材料很少,所以获取优质的密封材料和提高其材料性能,一直是密封领域研究的重点。

The material properties directly affect the sealing performance of the packing and the service life, and can completely meet the above all the properties of the material are few, so get a good seal and improve the performance of materials, has been the focus of research in the field ofseal.
 

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