作者：周智¹, 郝孝伟¹, 范广文^2,3, 刘新宇³, 贾正旺³, 金小青³, 杨炳雄⁴

作者单位：1. 大连理工大学智能结构系统研究所, 辽宁 大连 116024;
2. 西南石油大学石油与天然气工程学院, 四川 成都 610500;
3. 中石油昆仑燃气有限公司华北气分公司, 北京 101300;
4. 大连兰特科技有限公司, 辽宁 大连 116021

关键词：液化石油气;安全监测;激光气体传感器;微泄漏;超前预报系统

摘要：

液化石油气（liquefied petroleum gas，LPG）储运过程泄漏导致的安全问题一直是人们关注的焦点，目前尚没有长期可靠的微泄漏监测手段。针对北京顺义LPG储配库的丙烷泄漏安全监测问题，研制开发一套基于高性能激光气体传感器的LPG微泄漏超前预报系统。在介绍红外激光测试气体浓度原理的基础上，对该系统以标准浓度气体试样为参考，进行性能测试试验。试验结果表明：该系统的误差6%，响应时间2 s，距离覆盖达30 m，丙烷测试分辨率达到100 mg/L。将该系统应用到北京顺义LPG储配库，实现无线集成，监测结果符合实际泄漏情况。该系统具有良好的可靠性，可以实现免维护长期工作，具有良好的市场前景。

The micro-leakage advanced prediction system of gas detection for LPG storage and distribution field

ZHOU Zhi¹, HAO Xiaowei¹, FAN Guangwen^2,3, LIU Xinyu³, JIA Zhengwang³, JIN Xiaoqing³, YANG Bingxiong⁴

1. Institute of Smart Structures, Dalian University of Technology, Dalian 116024, China;
2. Petroleum and Natural Gas Engineering Institute, Southwest Petroleum University, Chengdu 610500, China;
3. Petro China KunLun Gas Company North China Branch, Beijing 101300, China;
4. Dalian Light M & C Technologies INC, Dalian 116021, China

Abstract: The safety issues caused by LPG leaks in the process of storage and transportation have long been a focus of attention. However, there has been no reliable means of micro-leakage detection for a long time. For the safety detection of propane leak in LPG storage and distribution field in Shunyi, Beijing, a set of LPG micro-leakage forecast systems based on high-performance laser gas sensor is developed.Based on the introduction of the theory of gas concentration test by infrared laser, the performance test was carried out while taking the gas sample in standard concentration as a reference. Test results showed that the error rate of this system for detection can be lower than 6%, whose response time is less than 2 s. Meanwhile, its detection distance can reach 30 meters, and test resolution for propane of the system is 100 mg/L. This system is applied to the project of LPG storage and distribution field in Shunyi, Beijing, which has achieved wireless integration. The monitoring results are consistent with the case of leakage. The micro-leakage detection system is reliable and can operate for a long time without maintenance, hence has a good market outlook.

Keywords: liquefied petroleum gas(LPG);safety detection;laser gas sensor;micro-leakage;advanced prediction system

2016, 42(7): 59-63  收稿日期: 2016-3-10;收到修改稿日期: 2016-4-18

基金项目: 

作者简介: 周智(1973-),男,湖南永州市人,教授,博士,研究方向为智能传感器与结构健康监测。

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