Introducing clogging course of mainheatexchanger and operation after deriming, analyzing accident cause and put forward effective solution.
介绍了主换热器阻塞的经过及大加温后的运作情况，分析了事故的原因，提出了有效的解决方案。
2
The basis for selecting the reasonable temperature difference at the hot end of the first mainheatexchanger of close-cycle 4.4K refrigerator is provided.
When the air separation device is reformed, the temperature measuring point is added to the inlet and outlet pipeline of each plate unit of the mainheatexchanger.