Abstract: The application of detecting SF6 leaking by IR laser imaging system has an important signification. If the emission line of the grating tunable laser is right within the absorb range of SF6, the reflecting line can be received by the IR detector and the system will display the SF6 leaking situation. SF6 gas will absorb more IR spectrum around the center of 10.56μm, so high stability laser output and single output frequency are requested.
yaD~1"GA'O Key words: IR imaging, gas sensing, application of spectrum, SF6, CO2 laser
C.~,qmOP uvMy^_}L 摘 要：激光紅外光學(xué)成像技術(shù)應(yīng)用于探測SF6氣體泄漏具有重要的現(xiàn)實意義，利用光柵可調(diào)co2激光器使輸出譜線正好在SF6吸收范圍，紅外探測器就能接收反射回的譜線從而顯示氣體泄漏狀況；SF6氣體對以10.56μm為中心的紅外光譜吸收率非常高，要求激光輸出穩(wěn)定性好，且輸出單一頻率。
+$u$<z 3Q ! _f9NK 關(guān)鍵字：紅外成像,氣體探測,光譜應(yīng)用,SF6 ,CO2激光器
p%#<D9S |P[w==AAf 1.介紹
fo5iJz"Z 由于Sulfur Hexafluoride（SF6）氣體優(yōu)良的絕緣性能和滅弧性能，相應(yīng)的SF6應(yīng)用產(chǎn)品的可靠性高，檢修工作量少，周期長等與傳統(tǒng)手段相比具有不可比擬的優(yōu)點，使得SF6應(yīng)用日益廣泛。伴隨著SF6大量的使用，SF6泄漏問題也開始顯露。傳統(tǒng)的檢測方法因為不能在線檢測、不能快速查找泄漏源等缺點，已不滿足應(yīng)用要求。
