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Based on the principle of optic fiber measuring technology,the configuration of transient optic fiber multichannel temperature measuring system is described.The experimental results of detonation temperature and emissivity of liquid explosive nitromethane (N.M) are given.They are 3700±100(K) and 0 7±0 15 respectively.

本文阐述了光纤测温技术依据的原理,给出了多通道瞬时光纤测温装置的构成利用该装置对液体炸药硝基甲烷的实际爆轰温度及其光谱发射率进行了实验测量,结果分别为3700±100(K)和071±015

This article introduces the development history and technology background of seepage monitoring with temperature indication method. Aiminy at the need and speciality of seepage controlling of Yangtze River levee in middle and lower course. The application feasibility of temperature measurement by distributed optical fiber sensors in seepage monitoring of Yangtze River levee was researched, which is the up to the minute development of this technology.

介绍了水工建筑物中的温度示踪法渗流监测技术的背景和发展过程 ,针对长江中下游堤防的特点及其渗流控制的需要 ,研究了这一技术的最新发展——分布式光纤测温技术在长江堤防渗流监测中应用的可行性。

The distributed optical fiber temperature monitoring technology is a new downhole temperature testing technology for use in thermal recovery wells. The optical fiber temperature monitoring system utilizes the Stockes and anti-Stockes light in Raman scattering light as well as OTDR principle to realize temperature measurement. It is mainly comprised of distributed temperature test system(DTS), optical tubes(temperature sensors) and data processing unit matched with the DTS interface. The test depth of the system...

The distributed optical fiber temperature monitoring technology is a new downhole temperature testing technology for use in thermal recovery wells. The optical fiber temperature monitoring system utilizes the Stockes and anti-Stockes light in Raman scattering light as well as OTDR principle to realize temperature measurement. It is mainly comprised of distributed temperature test system(DTS), optical tubes(temperature sensors) and data processing unit matched with the DTS interface. The test depth of the system is 0-2100 m; temperature tested ranges from 0-370 ℃; the distance resolution is 1 m; temperature test accuracy is ±1 ℃ and test time is 3 minutes. Lab test and field test show that the system can be used to measure reliably and safely the temperature profile of the whole wellbore once with reasonable error.

分布式光纤测温技术是稠油热采井下温度测试新技术,它是利用喇曼散射光中的斯托克斯(Stokes)光和反斯托克斯(anti-Stokes)光的强度与温度有关的原理进行分布式温度测量。这种测温系统主要由分布式温度测试仪(DTS)、光纤管(温度传感器)和与DTS仪器接口相配套的数据处理器3部分组成。系统测试深度0~2 100 m;测温范围0~370℃;测温距离分辨率1 m;测温精度±1℃;测温时间3 min。室内试验和胜利油田有限公司草桥区块油田CN8-3注汽井的现场测试表明,可一次测量出整个井筒的温度剖面,整套测量设备操作安全可靠,测量误差达到设计要求。

 
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