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本发明主要涉及一种光纤光栅温度传感器,包括有光纤光栅,其特征在于光纤光栅安设在一个细长的陶瓷盒体内,陶瓷盒体沿纵向通过隔板分隔成前腔和后腔,光纤光栅由陶瓷盒体后端通孔穿入经隔板延伸至陶瓷盒体内前腔,后腔的光纤光栅套装有空管,空管外包覆纤维加强件和外套管,且光纤光栅、空管、纤维加强件和外套管经盒体后端通孔向外延伸一段距离。本发明不仅具有灵敏度高、动态范围宽、可靠性好、传输损耗小的特性,而且抗电磁干扰和耐腐蚀、耐高温性能强,能应用于强电力强磁场及高温高压有腐蚀的恶劣环境;本发明结构设置简单合理,体积小、重量轻,工艺性好、制作封装方便;且工作性能稳定,具有较高的温度灵敏度,适用范围广。
The invention mainly relates to a fiber grating temperature sensor, which comprises a fiber grating. The utility model is characterized in that the fiber grating is arranged in an elongated ceramic box body, the ceramic box body is longitudinally divided into a front cavity and a back cavity by a partition plate, The utility model is characterized in that an optical fiber grating of an inner cavity and an inner cavity of a ceramic box body is provided with an empty tube which is sheathed by a through hole of a rear end of the ceramic box body and extends through a separator to cover the front cavity and the rear cavity of the ceramic box body; The fiber reinforcement and the outer sleeve extend a distance outwardly through the back end through-hole of the box body. The invention not only has the characteristics of high sensitivity, wide dynamic range, good reliability and small transmission loss, but also has the advantages of anti-electromagnetic interference and corrosion resistance and high temperature resistance and can be applied to harsh environments with strong electric field, high temperature and high pressure corrosive; The invention has the advantages of simple and reasonable structure setting, small volume, light weight, good manufacturability, convenient packaging and manufacturing, stable working performance, high temperature sensitivity and wide application range.