俄罗斯“船长”号船冷藏系统采用德国生产的Ｓ９００型螺杆式氟利昂压缩机。螺杆外径因多年的使用磨损严重，与壳体配合间隙、主从动螺杆之间的配合间隙均超过了使用极限，已经很难达到系统所要求的参数指标，如果整台更换设备，价格十分昂贵，船东要求我厂在不更换设备的... Russia’s “Captain” ship refrigeration system using German-made S900 screw Freon compressors. Screw diameter due to years of serious wear and tear, and the shell with the gap, the gap between the main and driven screw are more than the use of the limit, the system has been difficult to achieve the required parameters, if the entire replacement of equipment, the price is very Expensive, the owner asked me to plant does not replace the equipment ...