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[1]王迪,刘延雷,王明吉,等.泄漏方向对制冷压缩机吸排气管道氨气扩散的影响[J].中国安全生产科学技术,2018,14(4):140-146.[doi:10.11731/j.issn.1673-193x.2018.04.022]
　WANG Di,LIU Yanlei,WANG Mingji,et al.Influence of leakage direction on ammonia diffusion for suction and exhaust pipes of refrigeration compressor[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(4):140-146.[doi:10.11731/j.issn.1673-193x.2018.04.022]
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泄漏方向对制冷压缩机吸排气管道氨气扩散的影响
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
14
期数:
2018年4期
页码:
140-146
栏目:
职业安全卫生管理与技术
出版日期:
2018-04-30

文章信息/Info

Title:
Influence of leakage direction on ammonia diffusion for suction and exhaust pipes of refrigeration compressor
文章编号:
1673-193X(2018)-04-0140-07
作者:
王迪1; 刘延雷2; 王明吉3; 张国君1; 李栋1; 吴国忠1
（1.东北石油大学 土木建筑工程学院，黑龙江 大庆 163318；2.杭州市特种设备检测研究院，浙江 杭州 310000；3.东北石油大学 电子科学学院，黑龙江 大庆 163318）
Author(s):
WANG Di1;  LIU Yanlei2;  WANG Mingji3;  ZHANG Guojun1;  LI Dong1;  WU Guozhong1
(1.School of Civil Engineering and Architecture,Northeast Petroleum University,Daqing Heilongjiang 163318,China;2.Hangzhou Special Equipment Inspection and Research Institute,Hangzhou Zhejiang 310000,China;3.School of Electronics,Northeast Petroleum University,Daqing Heilongjiang 163318,China)
关键词:
氨气; 数值模拟; 泄漏方向; 扩散; 易燃易爆区域
Keywords:
ammonia;  numerical simulation;  leakage direction;  diffusion;  flammable and explosive areas
分类号:
X933
DOI:
10.11731/j.issn.1673-193x.2018.04.022
文献标志码:
A
摘要:
为研究氨制冷压缩机高压排气口管道和低压吸气管道在长期运行中存在的冷媒泄漏问题，以某氨制冷机房为研究对象，采用计算流体力学（CFD）进行小孔持续泄漏模拟计算，研究了垂直向上、水平背风和水平迎风方向泄漏时氨气的扩散特性，以及泄漏方向对报警器安装位置和易燃易爆区域的影响。研究结果表明：高压排气管道的泄漏方向为垂直向上和水平背风时，氨气扩散面积更大；低压吸气管道的泄漏方向为水平迎风时，氨气扩散区域远大于其他两种情形；点1，2和4处的氨气浓度增长速度快，浓度水平高，更有适合布置警报器；无论是高压管道还是低压管道泄漏，沿水平迎风方向泄漏时，危险性都更高。
Abstract:
To study the problem of refrigerant leakage existing in the long-time running of high pressure exhaust pipe and low pressure suction pipe in the ammonia refrigeration compressor,taking a ammonia refrigerating machine room as the research object,the simulation calculation on the continuous leakage of small hole was carried out by using the computational fluid dynamics (CFD). The diffusion characteristics of ammonia with the leakage directions of vertical upward,horizontal leeward and horizontal windward were studied,and the influence of the leakage directions on the installation positions of alarm and the flammable and explosive areas was analyzed. The results showed that when the leakage directions of high pressure exhaust pipe were the vertical upward and horizontal leeward,the diffusion area of ammonia was larger. When the leakage direction of low pressure suction pipe was the horizontal windward,the diffusion area of ammonia was much larger than those of the other two kinds. The ammonia concentrations at the points of 1,2 and 4 increased rapidly with a high concentration level,which were more suitable for the arrangement of the alarm. The leakage with the direction of horizontal windward was more dangerous in the leakage of whether the high pressure pipe or the low pressure pipe.

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备注/Memo

备注/Memo:
国家质检总局科技计划项目（2016qk143）；杭州市社发项目（20180533B20）
更新日期/Last Update: 2018-05-08