分布式光纖測溫原理

分布(bu)式(shi)光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)測溫(wen)(wen)系統(DTS)利(li)(li)用(yong)光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)的(de)(de)(de)(de)(de)拉曼散射(she)原(yuan)理(li)(li)，當光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)某處(chu)溫(wen)(wen)度(du)變化(hua)時，散射(she)光(guang)(guang)(guang)(guang)(guang)受到(dao)調制發生變化(hua)，通過高速信(xin)號采集與數據(ju)處(chu)理(li)(li)技術(shu)，準(zhun)確的(de)(de)(de)(de)(de)定位發生擾(rao)動的(de)(de)(de)(de)(de)位置并給(gei)出實時的(de)(de)(de)(de)(de)溫(wen)(wen)度(du)報警(jing)信(xin)息。分布(bu)式(shi)光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)溫(wen)(wen)度(du)監測系統測溫(wen)(wen)利(li)(li)用(yong)激光(guang)(guang)(guang)(guang)(guang)脈沖從光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)中(zhong)的(de)(de)(de)(de)(de)一(yi)(yi)端進入(ru)，在向前傳播(bo)的(de)(de)(de)(de)(de)過程中(zhong)光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)分子(zi)相互作用(yong)，發生多種類型的(de)(de)(de)(de)(de)散射(she)，其中(zhong)由于光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)分子(zi)的(de)(de)(de)(de)(de)熱(re)(re)振動產(chan)生一(yi)(yi)個(ge)比(bi)光(guang)(guang)(guang)(guang)(guang)源波(bo)長(chang)長(chang)的(de)(de)(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)，和一(yi)(yi)個(ge)比(bi)光(guang)(guang)(guang)(guang)(guang)源波(bo)長(chang)短的(de)(de)(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)，波(bo)長(chang)短的(de)(de)(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)強度(du)受溫(wen)(wen)度(du)影響比(bi)較(jiao)敏感，從光(guang)(guang)(guang)(guang)(guang)波(bo)導內任何一(yi)(yi)點(dian)的(de)(de)(de)(de)(de)兩個(ge)長(chang)短波(bo)光(guang)(guang)(guang)(guang)(guang)信(xin)號強度(du)的(de)(de)(de)(de)(de)比(bi)例(li)中(zhong)，可以(yi)得到(dao)該點(dian)的(de)(de)(de)(de)(de)溫(wen)(wen)度(du)信(xin)息。利(li)(li)用(yong)光(guang)(guang)(guang)(guang)(guang)時域反射(she)（OTDR）原(yuan)理(li)(li)即(ji)通過光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)中(zhong)光(guang)(guang)(guang)(guang)(guang)波(bo)的(de)(de)(de)(de)(de)傳輸速度(du)和背(bei)向光(guang)(guang)(guang)(guang)(guang)回(hui)波(bo)的(de)(de)(de)(de)(de)時間對這(zhe)些熱(re)(re)點(dian)進行定位。利(li)(li)用(yong)以(yi)上技術(shu)原(yuan)理(li)(li)即(ji)可實現對沿光(guang)(guang)(guang)(guang)(guang)纖(xian)(xian)溫(wen)(wen)度(du)場(chang)的(de)(de)(de)(de)(de)分布(bu)式(shi)測量。

分布式光纖管道泄漏監測原理

油氣(qi)管道(dao)(dao)泄(xie)(xie)漏(lou)(lou)時會(hui)引起泄(xie)(xie)漏(lou)(lou)點周圍(wei)溫度(du)的(de)(de)(de)(de)變(bian)化，通(tong)過分(fen)布(bu)式光纖溫度(du)傳感(gan)系統(tong)可(ke)以(yi)準確定(ding)位泄(xie)(xie)漏(lou)(lou)點。在天然氣(qi)管線介質(zhi)泄(xie)(xie)漏(lou)(lou)受(shou)壓情(qing)況下，氣(qi)態物質(zhi)導(dao)致的(de)(de)(de)(de)泄(xie)(xie)漏(lou)(lou)點的(de)(de)(de)(de)低溫，是(shi)由(you)物質(zhi)的(de)(de)(de)(de)物理性質(zhi)、工藝條件和周圍(wei)環(huan)境(jing)所決(jue)定(ding)的(de)(de)(de)(de)。這些(xie)點的(de)(de)(de)(de)溫度(du)異常可(ke)通(tong)過分(fen)布(bu)式溫度(du)測量而獲得，并有很好的(de)(de)(de)(de)溫度(du)、距離(li)和反應時間(jian)精度(du)。管道(dao)(dao)本身(shen)發生泄(xie)(xie)漏(lou)(lou)事故時，泄(xie)(xie)漏(lou)(lou)出的(de)(de)(de)(de)天然氣(qi)由(you)于存在壓力，會(hui)向管道(dao)(dao)周圍(wei)發出噴(pen)射(she)狀的(de)(de)(de)(de)氣(qi)體。如果能對整條天然氣(qi)管道(dao)(dao)在現有的(de)(de)(de)(de)壓力、流量探(tan)測技術基礎上，利用沿管道(dao)(dao)敷設(she)的(de)(de)(de)(de)通(tong)訊光纜，接入分(fen)布(bu)式光纖測溫傳感(gan)主機，就能夠(gou)實時探(tan)測到泄(xie)(xie)漏(lou)(lou)點，并進行泄(xie)(xie)漏(lou)(lou)點的(de)(de)(de)(de)定(ding)位和報警顯示。

分布式光纖測溫泄漏監測系統產品型號參數指標：

以下參數(shu)為(wei)標準參數(shu)展(zhan)示，可根(gen)據(ju)客戶具體需(xu)求定制，來(lai)電(dian)咨詢更加(jia)及時(shi)回復：0591-83841511

型號	SRA-D-GD
測(ce)量距離(li)	?0~30Km(可定制更長距離)
通(tong)道數	1~16個(ge)（可定制更多通道）
取(qu)樣(yang)間隔(ge)	1米
定位精度	±1米
測溫精度	±1攝(she)氏(shi)度
溫(wen)度分辨率	0.1攝氏度(du)
單通(tong)道測量(liang)時間	2s-15s秒（取(qu)決于感(gan)溫光纜的長(chang)度）
光纖類(lei)型(xing)	單模光纖
工作溫度(du)	-10℃~50℃
貯存溫(wen)度	-20℃~60℃
工作(zuo)濕度	0~95%無(wu)凝結
最大工作(zuo)海拔	4000米
光纖接口	FC/APC
測溫范(fan)圍	?-150℃~350℃? （特種光纖）
尺(chi)寸(W x H x D)	485 x 88 x 454 mm
重量8.5	8.5kg
通(tong)信接口	RS232、RS485、LAN、USB
電源	AC220V/50Hz?
激光輻射等級	1M

分布式光纖測溫設備特點

天(tian)(tian)(tian)然氣(qi)(qi)(qi)(qi)管(guan)線(xian)(xian)泄(xie)漏(lou)(lou)(lou)安(an)全(quan)監(jian)測(ce)系(xi)統(tong)(tong)采用(yong)目(mu)前先進(jin)(jin)的(de)(de)(de)(de)管(guan)道(dao)(dao)(dao)(dao)溫(wen)(wen)度系(xi)統(tong)(tong)監(jian)測(ce)技(ji)(ji)術。僅(jin)用(yong)天(tian)(tian)(tian)然氣(qi)(qi)(qi)(qi)管(guan)線(xian)(xian)中(zhong)(zhong)的(de)(de)(de)(de)通訊光(guang)(guang)(guang)(guang)纜(lan)的(de)(de)(de)(de)一(yi)根光(guang)(guang)(guang)(guang)纖就(jiu)可(ke)(ke)實(shi)現(xian)(xian)長達幾十(shi)公里的(de)(de)(de)(de)天(tian)(tian)(tian)然氣(qi)(qi)(qi)(qi)管(guan)道(dao)(dao)(dao)(dao)泄(xie)漏(lou)(lou)(lou)定(ding)(ding)位(wei)(wei)報(bao)警(jing)。通過(guo)(guo)(guo)基于通訊光(guang)(guang)(guang)(guang)纜(lan)的(de)(de)(de)(de)分(fen)布式光(guang)(guang)(guang)(guang)纖測(ce)溫(wen)(wen)技(ji)(ji)術，對天(tian)(tian)(tian)然氣(qi)(qi)(qi)(qi)管(guan)線(xian)(xian)進(jin)(jin)行在(zai)(zai)(zai)線(xian)(xian)溫(wen)(wen)度分(fen)布監(jian)測(ce)，就(jiu)能(neng)(neng)夠通過(guo)(guo)(guo)管(guan)道(dao)(dao)(dao)(dao)溫(wen)(wen)度異(yi)常(chang)點(dian)的(de)(de)(de)(de)探測(ce)，準確發(fa)(fa)(fa)(fa)現(xian)(xian)管(guan)道(dao)(dao)(dao)(dao)的(de)(de)(de)(de)泄(xie)漏(lou)(lou)(lou)點(dian)，并(bing)及時(shi)的(de)(de)(de)(de)進(jin)(jin)行報(bao)警(jing)和(he)定(ding)(ding)位(wei)(wei)。如果天(tian)(tian)(tian)然氣(qi)(qi)(qi)(qi)管(guan)線(xian)(xian)發(fa)(fa)(fa)(fa)生(sheng)泄(xie)漏(lou)(lou)(lou)，高壓氣(qi)(qi)(qi)(qi)體的(de)(de)(de)(de)體積(ji)膨脹(zhang)將(jiang)(jiang)引起(qi)漏(lou)(lou)(lou)點(dian)附近(jin)溫(wen)(wen)度的(de)(de)(de)(de)下(xia)降(jiang)，分(fen)布式光(guang)(guang)(guang)(guang)纖測(ce)溫(wen)(wen)系(xi)統(tong)(tong)同樣可(ke)(ke)通過(guo)(guo)(guo)溫(wen)(wen)度異(yi)常(chang)點(dian)的(de)(de)(de)(de)探測(ce)，發(fa)(fa)(fa)(fa)現(xian)(xian)并(bing)定(ding)(ding)位(wei)(wei)天(tian)(tian)(tian)然氣(qi)(qi)(qi)(qi)管(guan)線(xian)(xian)的(de)(de)(de)(de)泄(xie)漏(lou)(lou)(lou)點(dian)。通過(guo)(guo)(guo)對天(tian)(tian)(tian)然氣(qi)(qi)(qi)(qi)管(guan)線(xian)(xian)進(jin)(jin)行在(zai)(zai)(zai)線(xian)(xian)的(de)(de)(de)(de)分(fen)布式溫(wen)(wen)度監(jian)測(ce)，并(bing)將(jiang)(jiang)系(xi)統(tong)(tong)設(she)備接入(ru)管(guan)道(dao)(dao)(dao)(dao)監(jian)測(ce)系(xi)統(tong)(tong)局域網(wang)，通過(guo)(guo)(guo)網(wang)絡信(xin)號可(ke)(ke)將(jiang)(jiang)溫(wen)(wen)度信(xin)息上傳給中(zhong)(zhong)央服務器。可(ke)(ke)在(zai)(zai)(zai)整(zheng)個天(tian)(tian)(tian)然氣(qi)(qi)(qi)(qi)管(guan)線(xian)(xian)線(xian)(xian)路發(fa)(fa)(fa)(fa)生(sheng)管(guan)道(dao)(dao)(dao)(dao)泄(xie)漏(lou)(lou)(lou)以及事故初期階段，第一(yi)時(shi)間發(fa)(fa)(fa)(fa)現(xian)(xian)并(bing)報(bao)告預警(jing)點(dian)的(de)(de)(de)(de)具體位(wei)(wei)置、溫(wen)(wen)度變化、溫(wen)(wen)度下(xia)降(jiang)走向等(deng)(deng)信(xin)息數據，為天(tian)(tian)(tian)然氣(qi)(qi)(qi)(qi)管(guan)線(xian)(xian)管(guan)理部(bu)門(men)及其它相關部(bu)門(men)及時(shi)定(ding)(ding)位(wei)(wei)、分(fen)析可(ke)(ke)能(neng)(neng)發(fa)(fa)(fa)(fa)生(sheng)的(de)(de)(de)(de)管(guan)道(dao)(dao)(dao)(dao)泄(xie)漏(lou)(lou)(lou)事故提(ti)(ti)供(gong)(gong)可(ke)(ke)靠堅實(shi)的(de)(de)(de)(de)信(xin)息獲(huo)取手段，為天(tian)(tian)(tian)然氣(qi)(qi)(qi)(qi)管(guan)線(xian)(xian)系(xi)統(tong)(tong)安(an)全(quan)運行提(ti)(ti)供(gong)(gong)高效的(de)(de)(de)(de)安(an)全(quan)保障。本系(xi)統(tong)(tong)具有(you)本質防(fang)(fang)爆(bao)、抗強電磁干擾、電絕緣性好、防(fang)(fang)雷擊、高精(jing)度、重量輕、體積(ji)小(xiao)等(deng)(deng)優點(dian)，適合在(zai)(zai)(zai)易燃、易爆(bao)等(deng)(deng)高危(wei)環境應(ying)用(yong)。設(she)備聯(lian)網(wang)后，通過(guo)(guo)(guo)載(zai)入(ru)百度地(di)(di)圖(tu)(tu)顯示(shi)光(guang)(guang)(guang)(guang)纜(lan)所在(zai)(zai)(zai)位(wei)(wei)置地(di)(di)圖(tu)(tu)，并(bing)設(she)定(ding)(ding)中(zhong)(zhong)心點(dian)，選(xuan)定(ding)(ding)當地(di)(di)所在(zai)(zai)(zai)位(wei)(wei)置，可(ke)(ke)根據管(guan)道(dao)(dao)(dao)(dao)的(de)(de)(de)(de)走向在(zai)(zai)(zai)地(di)(di)圖(tu)(tu)上標出(chu)光(guang)(guang)(guang)(guang)纜(lan)走向圖(tu)(tu)，當發(fa)(fa)(fa)(fa)生(sheng)報(bao)警(jing)時(shi)，界(jie)面(mian)會出(chu)現(xian)(xian)一(yi)個彈窗，顯示(shi)報(bao)警(jing)地(di)(di)點(dian)，報(bao)警(jing)時(shi)間等(deng)(deng)。