Nyob rau hauv siab - kub thiab siab - lub siab downhole kev ua hauj lwm scenarios xws li roj av drilling, geological kev tshawb fawb, thiab kev loj hlob nyob rau hauv Geothermal, kev txhim khu kev qha fais fab mov rau cov khoom siv hluav taws xob tau ntev yog ib qho kev sib tw thiab engineering. Kev Ntsuas Thaum Drilling (MWD) / Logging Thaum Drilling (LWD) cov tshuab yuav tsum ua haujlwm tsis tu ncua hauv qhov hnyav downhole cov xwm txheej ntau txhiab meters sib sib zog nqus, qhov twg kub feem ntau tshaj 150℃thiab txawm mus txog 200 degree. Qhov no ua rau cov kev cai nruj heev ntawm qhov kub thiab txias, kev co tsis kam, thiab ntev - lub sij hawm ruaj khov ntawm cov khoom siv hluav taws xob.
Cov khoom lag luam niaj hnub siv hluav taws xob feem ntau yog tsim los rau ib puag ncig xws li ntawm -40℃mus rau +85 degree, ua rau lawv tsis tuaj yeem ua haujlwm ruaj khov hauv siab - kub downhole nqis. Yog li ntawd, siab -kev ntseeg siab AC-DC cov khoom siv hluav taws xob tshwj xeeb tsim kho rau qhov chaw kub kub tau dhau los ua cov khoom tseem ceeb hauv cov twj tso kua mis downhole, thiab lawv qhov kev ua tau zoo cuam tshuam ncaj qha rau cov ntaub ntawv tau txais, kis, thiab ntsuas ntsuas ntawm tag nrho cov ntsuas.
Txhawm rau hais txog qhov kev thov no, kev lag luam tau maj mam txhim kho siab -kev ua haujlwm hloov hluav taws xob hloov hluav taws xob thev naus laus zis kom haum rau siab - qhov kub thiab txias. Such power supplies usually adopt high-temperature-resistant electronic components, enhanced thermal design, and compact structures to achieve high power density and low thermal resistance heat dissipation within limited space. Piv txwv li, cov khoom siv hluav taws xob txhawb nqa ntev - lub sijhawm ua haujlwm ntawm qhov kub siab tshaj 200℃yuav tsum tau ua kom zoo tshaj plaws hauv kev xaiv cov khoom, kev teeb tsa hauv Circuit Court, thiab cov txheej txheem ntim khoom. Lawv kuj yuav tsum tau sib xws nrog peb -theem AC cov tswv yim thiab muaj qhov dav qhov hluav taws xob thiab ntau zaus los tiv thaiv cov khoom siv hluav taws xob hloov pauv los ntawm qhov sib txawv ntawm kev sib hloov ceev ntawm downhole generators.
Siv LMPA300-90S48 300W siab-kub AC-DC hloov fais fab mov module launched los ntawm Qingdao ZITN Microelectronics ua piv txwv. Cov khoom no tau pom meej meej ua haujlwm nyob rau hauv qhov ntsuas kub ntawm -45℃rau +200 degree, nrog luv luv -lub sij hawm kub siab txog li 220 degree, thiab nws nta 20g kev co kuj, zoo yoog rau ob qhov hnyav hnyav ntawm kev co thiab kub kub downhole. Nws txais peb-theem AC input, txhawb ntau qhov voltage ntawm 50-130Vac thiab ntau zaus ntawm 50-300Hz, thiab muab qhov ruaj khov 48V / 6.3A DC tso zis. Qhov kev ua tau zoo ntawm lub cev tuaj yeem ncav cuag li 92%, txo cov cua sov ntawm tus kheej thaum ua kom cov zis zoo. Lub module txais kev sib cais tsim, kev sib xyaw ua ke, kev tswj hwm, kev ruaj ntseg hluav taws xob, thiab inductance ua haujlwm, nrog rau cov qauv meej uas pab txhawb kev sib koom ua ke thiab kev saib xyuas.
Hais txog kev tiv thaiv kev nyab xeeb, lub module ua ke cov zis luv luv -circuit, overload, thiab overvoltage tiv thaiv ua haujlwm. Nws kuj tseem muaj cov teeb liab yoj lub teeb liab tso zis synchronized nrog lub tshuab hluav taws xob ceev, ua kom yooj yim xyuas cov khoom siv hluav taws xob. Nws txais yuav kev ua kom sov dissipation, ua kom muaj kev sib cuag zoo nrog cov ntsuas ntsuas los ntawm cov mounting slots thiab thermal roj, ntxiv dag zog rau cov cua sov dissipation kev ntseeg siab nyob rau hauv siab - kub ib puag ncig.
Los ntawm qhov kev xav hauv kev lag luam, xws li - qhov kub ntawm lub zog hluav taws xob modules tsis yog ib qho - cov khoom siv ua haujlwm xwb, tab sis "lub siab lub zog" uas ua kom muaj kev ruaj ntseg 24/7 ntawm cov twj paj nruag downhole. Lawv cov kev hloov pauv thev naus laus zis ib txwm tsom mus rau qhov ntsuas kub siab dua, lub zog siab dua, muaj zog ib puag ncig hloov pauv, thiab lub neej ua haujlwm ntev dua, kom ua tau raws li qhov xav tau ntawm kev ua haujlwm downhole ntau ntxiv hauv thaj chaw xws li kev tshawb nrhiav roj thiab roj thiab kev saib xyuas hauv av.
Hauv cov ntsiab lus, rau siab -kub downhole MWD systems, siab - kub- tiv taus, siab - kev ntseeg tau, thiab siab -efficiency AC- DC fais fab mov modules yog lub hauv paus lav rau kev ua tiav ntev - lub sijhawm ua haujlwm ruaj khov ntawm cov cuab yeej. Raws li kev tshawb nrhiav hluav taws xob tau nce mus rau qhov tob dua thiab kub dua, cov cuab yeej siv hluav taws xob nrog ntau qhov kub thiab txias ua haujlwm muaj peev xwm thiab muaj zog ib puag ncig adaptability yuav txuas ntxiv tsav kev txhim kho ntawm qhov ntsuas qhov ntsuas mus rau kev txawj ntse thiab kev ntseeg tau ntau dua.
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