输气管道稳态计算公式改进研究

输气管道工艺计算稳态公式在管道设计和管理过程中起着十分重要的作用。针对目前我国有关规范中常用稳态计算公式忽略了流速变化所带来的影响，适用范围受到限制的实际，根据天然气

IMPROVED STEADY STATE FORMULA FOR GAS PIPELINE

Gas pipeline steady state formula is very useful in pipeline design and management.Currently,the application scope of gas pipeline steady state formula in China is limited because of kinetic energy term being neglected.Based on the mass and momentum balance of gas motion in pipeline,a rigorous analytical equation is derived for gas pipeline between flow rate,inlet pressure and outlet pressure.This equation takes both elevation change and kinetic energy term into account,and hence makes calculating precision higher and application scope wider.Because of steady state formula for elevation change is implicit,computer programs are developed to handle applications.The applications and analysis show that while pressure difference between two ends of pipeline is larger,the kinetic energy term should be considered in the formula;and while inlet pressure increases and outlet pressure decreases,the flow rate may not be increase.