纳米磁性液体零泄漏密封保护器的实验研究

在某些特殊密封场合下,阀的密封优良与否具有重要意义,零泄漏就显得尤为重要。利用电磁式磁性液体零泄漏保护器搭建实验平台,记录了不同性状磁性液体在不同励磁电流下的耐压值,对比这些曲线之间的差异。实验表明:磁性液体的耐压值与磁感应强度成正比,在同等磁感应强度下,除去在点240 mA附近之外,耐压值的高低顺序依次为:样本1、样本2、样本3。根据电磁式保护器各磁场下的耐压情况,设计出三种不同尺寸的永磁环,研制出永磁式磁性液体密封保护器,扩大了保护器适应范围,提高了保护器的安全性能。总结出相关结论,对磁性液体密封中磁性液体的选取提供指导。

Experimental Study on Zero Leakage Sealing Protector of Nano-Magnetic Fluids

In some special seal situations,whether the seal of the valve is better or not is important,and the zero leakage is particularly important.The experimental platform was built with the zero leakage protector of electromagnetic nano-magnetic fluid,the pressure-resisting capabilities of different magnetic fluids were recorded in different excitation currents,and the differences between theses curves were compared.The experiment shows that the pressure-resisting values vary directly as the magnetic density.At the same magnetic density except the point of 240 mA,the order from high to low of the pressure-resisting values is as follows: sample 1,sample 2,sample 3.By the pressure-resisting capabilities of the electromagnetic protector under different magnetic fields,the three permanent magnet rings with different sizes were designed,a protector of nano-magnetic fluid with permanent magnetic was developed,enlarging the range of application and improving the safety.The relevant conclusions are summed up to guide the choice of the right magnetic fluid for the magnetic fluid seal.