Thaum lub sij hawm siv cov roj thiab cov kav dej mus ntev, vim yog corrosion, tawg, thiab kev puas tsuaj, thiab lwm yam, cov roj thiab cov pa tawm yuav tshwm sim. Cov roj thiab cov pa xau yuav tsis tsuas yog ua paug rau ib puag ncig ib puag ncig ntawm cov kav dej ntev ntev tab sis kuj tuaj yeem ua rau muaj kev nyab xeeb xws li kev sib tsoo thiab tawg, ua rau muaj kev puas tsuaj loj heev. . Yog li ntawd, cov roj thiab cov kav dej mus ntev yuav tsum tau kuaj xyuas tsis tu ncua kom ntseeg tau tias lawv muaj kev nyab xeeb thiab kev ntseeg siab ntawm cov kav dej.
Tam sim no, txoj kev tshawb nrhiav cov roj thiab cov kav dej ntev ntev muaj xws li cov txheej txheem ultrasonic, cov txheej txheem sib nqus flux to, thiab hauv cov yeeb nkab TV lub koob yees duab txoj kev. Hauv kev tshawb nrhiav cov roj thiab cov kav dej ntev ntev, txoj kev sib nqus flux leakage yog siv dav hauv kev tshawb nrhiav qhov tsis xws ntawm cov kav dej. Txoj kev sib nqus flux leakage feem ntau yog nyob ntawm high-precision magnetic flux to, advanced signal processing, and data storage systems, and then use av analysis equipment to analyze the test results to get information on various defects and damage state parameters in pipeline. Lub hauv paus ntsiab lus ntawm pipeline magnetic flux to detection yog: siv cov hlau nplaum tas mus li thiab cov txhuam hlau los siv lub zog sib nqus ntawm cov raj xa dej, qhov kawg ntawm cov hlau txhuam yog nyob rau hauv kev sib cuag nrog cov phab ntsa hauv cov kav dej, thiab cov phab ntsa sab hauv. lub raj xa dej yog magnetized nyob rau hauv qhov kev txiav txim ntawm sab nraud magnetic teb. Yog tias tsis muaj qhov tsis xws luag hauv cov phab ntsa sab hauv ntawm lub raj xa dej, kev faib tawm ntawm cov kab hluav taws xob sib nqus yog qhov tsis tu ncua; Yog hais tias muaj ib qho tsis xws luag nyob rau hauv lub puab phab ntsa ntawm lub raj xa dej, nws yuav ua rau muaj kev hloov pauv hauv cov hlau nplaum tiv thaiv, thiab qhov kev hloov ntawm magnetic permeability yuav ua rau cov kab hlau nplaum sib nqus yuav khoov, thiab ib feem ntawm cov kab hlau nplaum magnetic. sab hauv phab ntsa ntawm tus thawj kav dej xau tawm ntawm lub raj xa dej los ua ib qho kev sib nqus flux to; Tom qab cov xaim hlau nplaum tau kuaj pom los ntawm qhov ntsuas qhov ntsuas sab hauv ntawm cov raj xa dej sib txuas cov cim induction yuav raug tsim tawm, thiab cov cim induction yuav raug ua tiav thiab khaws cia. Thaum kawg, cov ntaub ntawv txheeb xyuas qhov system yuav pom qhov chaw tsis raug thiab qhov hnyav ntawm qhov tsis xws luag hauv cov kav dej ntev ntev thiab cov roj av, txhawm rau coj cov neeg ua haujlwm kho cov kav dej kom khawb thiab kho cov kav dej.
Samarium-cobalt hlau nplaum feem ntau yog siv los ua cov hlau nplaum ruaj khov hauv kev tshuaj xyuas cov roj thiab cov kav dej siv cov hlau nplaum sib nqus. Cov hlau nplaum SmCo muaj cov khoom sib nqus ze ze ntawm NdFeB, tuaj yeem muab cov hlau nplaum muaj zog, muaj qhov kub thiab txias tsis kam tiv thaiv corrosion, thiab haum rau siv nyob rau hauv complex thiab hloov sab nraum ib puag ncig.
