有限容积燃气管道带气作业降压时间的计算与仿真  

Calculation and Simulation of Depressurization Time of Gas Pipeline with Limited Volume

作　　者：张明作 李英杰 党辉 王建 Zhang Mingzuo;Li Yingjie;Danghui;Wang Jian

机构地区：[1]北京市燃气集团有限责任公司第四分公司,100176 [2]清华大学机械工程系,100084

出　　处：《城市燃气》2018年第4期14-17,共4页Urban Gas

摘　　要：本文阐述了燃气管道带气作业的工作原理,建立了管道计算模型,并获得了管道带气作业降压时间的计算公式。利用FLUENT软件对燃气管道降压过程进行仿真模拟,分析了燃气管道降压过程中的压力-时间变化特性。通过与实际燃气管道降压过程时间数据对比,验证了计算方法和仿真模型的有效性。该方法可以应用于燃气管道带气作业压降控制,对带气作业调压方案的制定具有重要的指导意义。The working principle of pipeline maintenance with gas is introduced in the paper. A model is established to obtain the calculating formula of the depressurization time. The simulation of the gas pipeline＇s depressurization process is conducted in FLUENT, with which the pressure-time characteristics of the process is analyzed. The calculation and simulation results are validated by comparing the data from an actual gas pipeline depressurization process. The proposed method can be applied to gas pipeline pressure drop control, which is highly instructive on pressure regulating scheme design on gas pipeline.

关 键 词：带气作业 降压时间 压力仿真 

分 类 号：TU996.7[建筑科学—供热、供燃气、通风及空调工程]