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分析了低温液体输入热管道后升压过程， 并对输送过程中的临界质量流进行了计算， 结合有关文献的实验数据， 给出输送过程中的压力计算公式。并提出了减少压力最大值的方法， 对于低温液体输送参数的确定、管道的设计提供参考。
The pressure rise process of the hot pipeline after the cryogenic liquid is imported is analyzed. The critical mass flow in the process of transportation is calculated. Based on the experimental data of the relevant literature, the pressure calculation formula in the delivery process is given. The method to reduce the maximum pressure is put forward, which can be used as a reference for the determination of the parameters of cryogenic liquid transportation and the design of the pipeline.