產(chan)品概述:
SRM-ZT10地下管線探測儀是一款全自動智能地下管線探測儀,擁有強大的8個立體天線組成的天線陣,可以給用戶提供完整、準確、直觀的地下管線信息,可以對地下管線進行準確的定位和快速的追蹤。地上管線探測儀主要作用應用于探測煤氣、電力、電信、自來水、工業管道、排水和有線電視等各類城市地下管線,
多頻發射機用于給要目標管線施加特定頻率的定位電流信號。屏幕可同時顯示輸出電流、輸出電壓、輸出功率和回路電阻等信息。5、4節(jie)2號堿(jian)性電池(標配(pei))
其基本工作(zuo)原理(li)是:由發(fa)射(she)機(ji)產(chan)生(sheng)電(dian)(dian)(dian)(dian)磁信號(hao)(hao),通過(guo)不同的(de)發(fa)射(she)連接(jie)方式將信號(hao)(hao)傳送到地(di)下(xia)被測電(dian)(dian)(dian)(dian)纜(lan)上(shang),地(di)下(xia)電(dian)(dian)(dian)(dian)纜(lan)感應到電(dian)(dian)(dian)(dian)磁信號(hao)(hao)后,在(zai)電(dian)(dian)(dian)(dian)纜(lan)上(shang)產(chan)生(sheng)感應電(dian)(dian)(dian)(dian)流,感應電(dian)(dian)(dian)(dian)流沿著電(dian)(dian)(dian)(dian)纜(lan)向(xiang)遠處傳播,在(zai)電(dian)(dian)(dian)(dian)流的(de)傳播過(guo)程(cheng)中(zhong),通過(guo)該地(di)下(xia)電(dian)(dian)(dian)(dian)纜(lan)向(xiang)地(di)面(mian)輻射(she)出電(dian)(dian)(dian)(dian)磁波,這樣當(dang)管線定位儀接(jie)收(shou)機(ji)在(zai)地(di)面(mian)探測時(shi),就會(hui)在(zai)電(dian)(dian)(dian)(dian)纜(lan)上(shang)方的(de)地(di)面(mian)上(shang)接(jie)收(shou)到電(dian)(dian)(dian)(dian)磁波信號(hao)(hao),通過(guo)接(jie)收(shou)到的(de)信號(hao)(hao)強弱(ruo)變化來(lai)判(pan)別地(di)下(xia)電(dian)(dian)(dian)(dian)纜(lan)的(de)位置、走向(xiang)和故障發(fa)射(she)機(ji)的(de)工作(zuo)原理(li)及方法(fa)(fa)發(fa)射(she)機(ji)的(de)信號(hao)(hao)發(fa)送連接(jie)方式:直(zhi)連法(fa)(fa)、耦合法(fa)(fa)、感應法(fa)(fa)
二、地下管線探測儀接收機的工作原理及方法
接收機的三種工作方式:波峰法、波谷法、跨步電壓法。
a.波峰法:探(tan)(tan)測(ce)儀接收(shou)機位(wei)于管(guan)線(xian)(xian)(xian)(xian)正上方(fang)(fang)時(shi)信(xin)號指示zui大(da)(da)、聲音也zui大(da)(da)。要(yao)注意調節增益,使(shi)其僅(jin)僅(jin)能在(zai)(zai)管(guan)線(xian)(xian)(xian)(xian)上方(fang)(fang)或附近(jin)探(tan)(tan)測(ce)到信(xin)號。波峰法(fa)是用水平線(xian)(xian)(xian)(xian)圈接收(shou)電(dian)磁場(chang)水平分(fen)量(liang)(liang)的(de)(de)強度(du),對無干(gan)擾的(de)(de)電(dian)纜(lan)進行峰值檢測(ce)。在(zai)(zai)電(dian)纜(lan)正上方(fang)(fang)時(shi),當接收(shou)機的(de)(de)正面(mian)與電(dian)纜(lan)走向(xiang)垂直(zhi)時(shi)磁場(chang)響(xiang)應(ying)強度(du)zui大(da)(da),這(zhe)不僅(jin)因(yin)為(wei)(wei)線(xian)(xian)(xian)(xian)圈離電(dian)纜(lan)zui近(jin),線(xian)(xian)(xian)(xian)圈所在(zai)(zai)的(de)(de)磁場(chang)強,還因(yin)為(wei)(wei)此時(shi)磁場(chang)的(de)(de)磁力(li)線(xian)(xian)(xian)(xian)通(tong)過接收(shou)線(xian)(xian)(xian)(xian)圈的(de)(de)磁通(tong)量(liang)(liang)zui大(da)(da)。當接收(shou)機向(xiang)電(dian)纜(lan)兩(liang)側移(yi)動探(tan)(tan)測(ce)時(shi),兩(liang)側磁場(chang)響(xiang)應(ying)強度(du)對稱且逐漸(jian)減小(xiao)。這(zhe)不僅(jin)因(yin)為(wei)(wei)此時(shi)的(de)(de)線(xian)(xian)(xian)(xian)圈離電(dian)纜(lan)距離遠,接收(shou)機線(xian)(xian)(xian)(xian)圈所接收(shou)的(de)(de)磁場(chang)變(bian)弱,還因(yin)為(wei)(wei)此時(shi)磁場(chang)磁力(li)線(xian)(xian)(xian)(xian)的(de)(de)方(fang)(fang)向(xiang)與線(xian)(xian)(xian)(xian)圈的(de)(de)平面(mian)不再(zai)垂直(zhi),通(tong)過線(xian)(xian)(xian)(xian)圈的(de)(de)磁通(tong)量(liang)(liang)變(bian)小(xiao),從而產生如山峰一樣的(de)(de)信(xin)號響(xiang)應(ying)。因(yin)而叫做“波峰法(fa)”。波峰法(fa)原(yuan)理。
b. 波谷法:探測(ce)儀(yi)接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)位于(yu)電(dian)纜(lan)正(zheng)(zheng)上(shang)方(fang)(fang)時(shi)(shi)(shi)信號(hao)(hao)指示(shi)zui小、且接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)聲(sheng)音(yin)指示(shi)無任何聲(sheng)音(yin)指示(shi)。要注意調節增(zeng)益,使接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)在(zai)電(dian)纜(lan)正(zheng)(zheng)上(shang)方(fang)(fang)無信號(hao)(hao)及(ji)聲(sheng)音(yin)指示(shi),而(er)位于(yu)線(xian)(xian)(xian)(xian)(xian)路兩(liang)邊(bian)時(shi)(shi)(shi)有聲(sheng)音(yin)。波谷(gu)法(fa)用垂(chui)(chui)(chui)直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)圈測(ce)量(liang)電(dian)磁(ci)(ci)場(chang)的(de)(de)垂(chui)(chui)(chui)直(zhi)(zhi)(zhi)分量(liang),目標電(dian)纜(lan)上(shang)的(de)(de)磁(ci)(ci)場(chang)是由無數個與電(dian)纜(lan)同心的(de)(de)圓型磁(ci)(ci)力線(xian)(xian)(xian)(xian)(xian)組成(cheng)的(de)(de),接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)在(zai)電(dian)纜(lan)正(zheng)(zheng)上(shang)方(fang)(fang)時(shi)(shi)(shi)信號(hao)(hao)響(xiang)應(ying)(ying)zui小,兩(liang)側各有一(yi)(yi)個高峰。這(zhe)是由于(yu)這(zhe)些(xie)磁(ci)(ci)力線(xian)(xian)(xian)(xian)(xian)在(zai)電(dian)纜(lan)正(zheng)(zheng)上(shang)方(fang)(fang)穿(chuan)過接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)垂(chui)(chui)(chui)直(zhi)(zhi)(zhi)接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)線(xian)(xian)(xian)(xian)(xian)圈的(de)(de)垂(chui)(chui)(chui)直(zhi)(zhi)(zhi)分量(liang)為(wei)零(ling)(ling),此時(shi)(shi)(shi)通(tong)過接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)的(de)(de)垂(chui)(chui)(chui)直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)圈的(de)(de)磁(ci)(ci)通(tong)量(liang)為(wei)零(ling)(ling),信號(hao)(hao)響(xiang)應(ying)(ying)有一(yi)(yi)個zui小值(零(ling)(ling)值或極小值);當接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)在(zai)電(dian)纜(lan)兩(liang)側移動(dong)時(shi)(shi)(shi),儀(yi)器(qi)的(de)(de)響(xiang)應(ying)(ying)會(hui)隨(sui)著接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)遠(yuan)(yuan)離電(dian)纜(lan)而(er)逐漸(jian)增(zeng)大,這(zhe)是因為(wei),此時(shi)(shi)(shi)的(de)(de)磁(ci)(ci)力線(xian)(xian)(xian)(xian)(xian)方(fang)(fang)向與接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)垂(chui)(chui)(chui)直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)圈平面(mian)已形成(cheng)一(yi)(yi)定的(de)(de)角(jiao)度(du)(du),通(tong)過接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)垂(chui)(chui)(chui)直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)圈的(de)(de)磁(ci)(ci)通(tong)量(liang)逐漸(jian)變大。同時(shi)(shi)(shi),隨(sui)著接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)線(xian)(xian)(xian)(xian)(xian)圈遠(yuan)(yuan)離地下電(dian)纜(lan),接(jie)(jie)(jie)(jie)收(shou)(shou)(shou)(shou)機(ji)(ji)(ji)(ji)探測(ce)到的(de)(de)磁(ci)(ci)場(chang)的(de)(de)強度(du)(du)逐漸(jian)變弱,當這(zhe)一(yi)(yi)因素成(cheng)為(wei)影響(xiang)通(tong)過線(xian)(xian)(xian)(xian)(xian)圈磁(ci)(ci)通(tong)量(liang)變化(hua)的(de)(de)主要因素時(shi)(shi)(shi),儀(yi)器(qi)的(de)(de)響(xiang)應(ying)(ying)又會(hui)逐漸(jian)變小,從而(er)產生如(ru)山谷(gu)一(yi)(yi)樣的(de)(de)信號(hao)(hao)響(xiang)應(ying)(ying)。因而(er)叫做“波谷(gu)法(fa)” 波谷(gu)法(fa)原理
c. 跨步電壓法:通過“A”字架可以探測出直埋電纜的對地故障及外皮破損故障。
將“A”字架連接到接收機,接收機通過接收“A”字架探測到發射機發出的由故障點溢出的泄漏信號,可很方便的定位直埋電纜對地及外皮破損故障。
直(zhi)埋(mai)電(dian)纜(lan)(lan)故障(zhang)精(jing)(jing)準(zhun)定位特別適用于(yu)路燈電(dian)纜(lan)(lan)、直(zhi)埋(mai)電(dian)力電(dian)纜(lan)(lan)、直(zhi)埋(mai)通訊電(dian)纜(lan)(lan)、直(zhi)埋(mai)光纜(lan)(lan)對地(di)(di)(di)絕緣故障(zhang)的(de)快速準(zhun)確定位。尤其對直(zhi)埋(mai)電(dian)纜(lan)(lan)的(de)死接地(di)(di)(di)十分有用,用傳(chuan)統高(gao)壓閃絡法(fa)(fa)測試時,因為(wei)單相金屬(shu)性(xing)接地(di)(di)(di)故障(zhang)點的(de)放電(dian)能量與(yu)放電(dian)電(dian)流的(de)平方和接地(di)(di)(di)電(dian)阻成正比,并且接地(di)(di)(di)電(dian)阻很小,故故障(zhang)點擊穿間隙放電(dian)時聲(sheng)音較輕,無法(fa)(fa)精(jing)(jing)準(zhun)定點,甚至無法(fa)(fa)定點。