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厂家为什么要对燃气热风炉测温精密度

2019-02-26 14:51:39 常州亿创能源科技有限公司 阅读

燃气热风炉在工业炼铁领域有着至关重要的作用,因此,燃气热风炉的温度测量及监控显得尤为必要,但是传统的测温方式存在着耗资大、不方便等缺点,新型测温方式——分布式光纤测温,并将其应用于燃气热风炉。分布式光纤测温技术是近几年新发展的一种用于实时测量空间温度场数据的高新技术,它是基于光时域反射技术(OTDR)及拉曼散射测温原理发展的。
Gas-fired hot-blast stove plays an important role in the field of industrial ironmaking. Therefore, the temperature measurement and monitoring of gas-fired hot-blast stove is particularly necessary. However, the traditional temperature measurement method has the disadvantages of high cost and inconvenience. A new type of temperature measurement method, distributed optical fiber temperature measurement, is applied to gas-fired hot-blast stove. Distributed optical fiber temperature measurement technology is a new high-tech for real-time measurement of spatial temperature field data in recent years. It is based on optical time domain reflectometry (OTDR) and Raman scattering temperature measurement principle.
该技术的重点部分是信号解调,因而本文综合研究分布式光纤测温的多种解调方法及燃气热风炉测温特点,创新性的提出采用双端双路解调法(DTDC)。分三个部分介绍了基于DTDC解调法的分布式光纤测温技术在燃气热风炉上的应用。以燃气热风炉为研究对象,介绍了课题的研究背景及意义、燃气热风炉测温和分布式光纤测温的国内外研究现状,以及提出新型解调方式的必要。
The key part of this technology is signal demodulation. Therefore, this paper synthetically studies various demodulation methods of distributed optical fiber temperature measurement and the characteristics of gas hot blast stove temperature measurement, and innovatively proposes a dual-terminal dual-channel demodulation method (DTDC). The application of distributed optical fiber temperature measurement technology based on DTDC demodulation in gas hot blast stove is introduced in three parts. Taking the gas hot blast stove as the research object, this paper introduces the research background and significance of the subject, the research status of gas hot blast stove temperature measurement and distributed optical fiber temperature measurement at home and abroad, and the necessity of putting forward a new demodulation method.
从燃气热风炉测温的发展及现有的解调方法等理论部分出发,提出问题,然后针对相应的问题提出解决方案,并以此得到系统的整体结构设计,主要分为硬件和软件两大模块。硬件结构主要由光源、传感光纤、光开关、波分复用器(WDM)、光电检测器以及FPGA与DSP结合的信号采集与处理模块组成;软件模块则包含了数据的采集、去噪、解调的程序设计,以及环境配置,硬件与上位机部分连接的程序设置。
Starting from the development of gas hot blast stove temperature measurement and the existing demodulation methods, this paper puts forward some problems, then puts forward solutions to the corresponding problems, and obtains the overall structure design of the system, which is mainly divided into two modules: hardware and software. The hardware structure is mainly composed of light source, sensing optical fiber, optical switch, wavelength division multiplexer (WDM), photoelectric detector and signal acquisition and processing module combined with FPGA and DSP. The software module includes the program design of data acquisition, denoising and demodulation, as well as the environment configuration, and the program settings of the connection between hardware and PC.
对软件与硬件结合的测温系统进行性能测试,先于实验室中对不同的解调方式进行对比研究,得出DTDC尤于其它解调法,然后测试系统的测温精度及分辨率,结果满足燃气热风炉工业现场要求。本文致力于将分布式光纤测温的新研究成果应用于某钢铁的燃气热风炉测温系统,并对系统的测温精度及空间分辨率进行测试。测试结果表明,测量的温度范围在-10~200℃之间,较大测温误差不超过0.5℃,定位精度为0.5m,满足工业要求,在燃气热风炉测温领域有着良好的理论意义与应用前景。
The performance test of the temperature measurement system combined with software and hardware is carried out. It is concluded that DTDC is superior to other demodulation methods by comparing different demodulation methods in the laboratory. Then the temperature measurement accuracy and resolution of the system are tested. The results meet the requirements of the industrial field of gas hot blast stove. This paper is devoted to applying the new research results of distributed optical fiber temperature measurement to the temperature measurement system of a steel gas hot blast stove, and testing the temperature measurement accuracy and spatial resolution of the system. The test results show that the temperature range of measurement is between - 10 200 C, the larger error of temperature measurement is not more than 0.5 C, and the positioning accuracy is 0.5 m, which meets the industrial requirements. It has good theoretical significance and application prospects in the field of gas hot blast stove temperature measurement. 


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