空间有阀无油线性压缩机实验优化

Experimental Optimization of Space Oil-free J-T Compressors

有阀线性压缩机是空间液氦温区节流制冷机的关键部件,为满足液氦温区节流制冷机的需求,基于本实验室研制的动圈式有阀线性压缩机,对两级对置式线性压缩机进行了实验优化。主要针对压缩机的板弹簧特性、输入参数和充气压力等开展相关实验研究,解决压缩机运行过程中出现的活塞中心位置偏移的问题,逐步提升压缩机的性能。最终,在功耗65 W,采用两级级压缩获得了11.8的压比。

Linear JT compressor is one of the key components of the space 4 K JT cryocooler.To fulfill the requirement of the space 4 K JT cooler,experimental optimization is carried out on a two-stage JT linear compressor developed by our laboratory.The characteristics of the plate spring,input power and charge pressure is experimentally studied.The problem of the deviation of piston center position in the operating process of the JT compressor has been solved.And the performance of the two-stage JT compressor is improved.Ultimately,pressure ratio of 11.8 is achieved when the input power is 65 W.