无油润滑填料密封的改进

Research on Packing Rings of Oil-free Sealing

无油润滑密封填料塞入填料函后受到压盖的压力,但是靠近压盖远端的填料受到的压力比填料压盖近端小,导致填料轴向和径向受力小,变形量小,引起泄漏。如果把压盖螺栓过力拧紧,会导致填料变形过大,轴受到的力过大,产生大量的摩擦热并加剧轴的磨损。本文从材料成分配比和填料环结构两方面入手,改进填料密封。经过实验表面,这种材料和结构大大提高了密封效果。

The packing rings of oil-sealing were pressed after the packing rings were packed into packing ease. But the press of the packing rings was bigger near the gland, caused axial force and radial force got smaller and smaller, distortion got smaller, and caused leakage. If the bolt screwed down with a very large force, the pack- ing rings would be distorted badly, the force on the axis would be very large, aroused a lot of heat of friction. At the same time, the abrasion on the axis was picked up. The material component and the configuration improve the packing rings was analyzed. From the experiment it could find out that this material and configuration could improve the effort of the sealing greatly.