低温液体输送过程中的参数计算与分析

The Analysis and Calculation of the Cryogenic Liquid in Transporting Process

首先分析了在稳定的单相流中液体温升和压力损失的计算方法 ,然后介绍了在稳定的两相流中如何计算流体的流量及出口液体的蒸气含量 ,最后对三种最常见的非稳定过程 :管路被冷却、填充盲支管以及打开阀门进行了分析 。

In the paper, the method of pressure loss and liquid temperature rising calculation in the steady one-state flow is analyzed. Then the method of flux and vapor rate in the steady two-state flow is introduced. At last, the most familiar unsteady process, the cooling of pipe, the filling of close branding pipe, the opening of valve, is analyzed and how to calculate the max of pressure fluctuation in the three process is generalized.