锅炉四管漏泄装置的光电传声系统研究  

Study on photoelectric voice transmission system of leakage installation of four pipes in boiler

作　　者：徐元哲[1] 陈红振[1] 

机构地区：[1]东北电力大学,吉林长春132012

出　　处：《传感器与微系统》2010年第11期26-28,32,共4页Transducer and Microsystem Technologies

摘　　要：大型电站锅炉的四管泄漏是引起机组非计划停运的主要原因,如何预防和控制锅炉四管泄漏事故就成为保障电网安全运行的重要环节。声谱分析法是目前最常用的检测方法,在锅炉的顶部温度较高,而且锅炉内部有时产生正压会使普通音频传感器特别容易损坏,设计了耐高温的光纤音频传感器与声学谐振腔,通过仿真确定了光纤音频传感器高灵敏度的工作范围,并通过声学谐振腔的设计,使泄漏噪声信号提高了1倍。由实验测试结果可知,该系统能够有效地测试到锅炉炉管泄漏信号,为锅炉炉管泄漏监测提供了新的思路。The leakage on four kinds of tubes in the large power station boiler is the main reason for unplanned outage of power units. So how to prevent and control the leakage accident has become an important part of ensuring the safe operation of power grid. Sound spectrum analysis method is the most commonly used detection method. Aiming at the problem that the temperature at the top of the boiler is high, and sometimes the positive pressure produced inside the boiler will make ordinary audio sensors damaged easily. A system of high temperature resistance fiber optic audio sensor and acoustic resonator are designed. The work scope of high sensitivity of fiber optic audio sensor can be determined and the leakage noise signal is doubled through the design of acoustic resonators. The experimental test results show this system can effectively test leakage signal inside the boiler tube, and provide a new idea for leakage detection.

关 键 词：四管泄漏 光纤传感器 声学谐振腔 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]