液氧泵机械密封用金属波纹管设计研究

Design research of metal bellows for mechanical seal in liquid oxygen pump

分析研究了液氧泵机械密封用金属波纹管在常温条件下轴向拉伸变形与金属波纹管自由高度和密封摩擦功耗之间的关系,在此基础上,研究归纳出了液氧泵机械密封用金属波纹管设计规范,采用该规范设计生产的金属波纹管已用于液氧/煤油发动机,该发动机已通过地面热试车考核。

The relation between axial tensile deformation of metal bellows in liquid oxygen pump in normal temperature and unsupported height of metal bellows as well as friction power dissipation of mechanical seal are analyzed. On the basis of above analysis, the design regulations of metal bellows for mechanical seal in liquid oxygen pump are studied and summed up. The metal bellows has been applied successfully to the liquid oxygen/kerosene propellant rocket engine, and passed the engine hot test.