高压天然气管道泄漏及事故危害规律研究

摘要

天然气长输管道泄漏扩散的基本理论,全面分析了影响天然气泄漏扩散的因素;建立了天然气长输管道泄漏模型,对不同影响因素下天然气泄漏的压力场、速度场、浓度场以及危险区域进行了模拟分析,阐述了不同工况下天然气长输管道泄漏的规律;通过模拟对比分析了不同泄漏孔径、不同泄漏压力对泄漏区域的影响;模拟分析了气体中含硫化氢和泄漏区域有建筑物时的泄漏规律.%The theory of natural gas leakage diffusion was described.The affecting factors of gas diffusion were analyzed.And the leakage model of long distant natural gas pipeline was established.The pressure field,velocity field,concentration field and dangerous area during the leakage of long distance gas pipeline were simulated and analyzed under different working conditions.And the influence of different apertures and different leakage pressure on diffusion area was simulated.