主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (1): 98-101.

• • 上一篇    下一篇

卧式氨气储罐气体探测器安装位置的研究

王宇辰   

  1. 安徽省消防救援总队，安徽合肥230000
  • 出版日期:2021-01-15 发布日期:2021-01-15
  • 作者简介:王宇辰(1982-)，男，安徽淮北人，安徽省消防救援总队后勤装备处，中级专业技术职务，主要从事灭火救援装备方面的研究工作，安徽省合肥市包河区中山路3388 号，230000

Study on installation location of ammonia gas detector in horizontal storage tank

WANG Yu-chen   

  1. Anhui Fire and Rescue Brigade, Anhui Hefei 230000，China
  • Online:2021-01-15 Published:2021-01-15

PDF (PC)

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摘要：

为了实现对卧式氨气储罐泄漏、有毒气体扩散状态的有效分析测量，建立了小尺寸模型与大尺寸模型，基于Fluent软件的组分输运模型，对卧式液氨储罐局部泄漏和整体扩散情况进行模拟计算，并基于模拟研究结果和实际厂区工况，以氨气扩散的路径和气云形态为着手点，提出各种气象环境下氨气探测器的合理布置方案。模拟结果表明：风速越大，氨气前期扩散速度越快，同时大风速也有利于稀释有害气体浓度；此外，氨气这类轻质气体，在大范围空气中扩散时，其流动状态、形成气云形态受外界风速的影响较大。

关键词: 氨气, 泄漏扩散, 数值模拟, 探测器, 安装位置

Abstract: In order to realize the effective analysis and measurement of leakage and toxic gas diffusion state of horizontal ammonia storage tank, small- scale model and large- scale model are established. Based on the component transport model of Fluent software, the local leakage and overall diffusion of horizontal liquid ammonia storage tank are simulated. Starting from the path of ammonia diffusion and the form of gas cloud, aimed at the simulation results and the actual plant conditions, the reasonable layout scheme of ammonia detector under various meteorological conditions is proposed. Simulation results indicate that the higher the wind speed, the faster the ammonia diffusion speed in the early stage, and the higher wind speed is also conducive to dilute the concentration of harmful gases; moreover, when ammonia diffuses in a wide range of air, its flow state and formation of gas cloud shape are greatly affected by external wind speed.

Key words: ammonia; leakage diffusion, numerical simulation, detector, installation locatio