Lub hom phiaj tseem ceeb thaum tsim lub siab -voltage overhead kab mus dhau lub zog xa mus. Nws txhais tau hais tias xa lub zog ntawd kom nyab xeeb, ib xyoos dhau ib xyoos, nyob rau hauv cov xwm txheej hnyav tshaj plaws tuaj yeem tsim tau. Cua gusts, ice loads, conductor galloping, thiab thermal cycles tso cumulative stress rau tus pej thuam qauv. Cov hlau xaiv tau dhau los ua thawj kab ntawm kev tiv thaiv kev ua haujlwm tsis ua haujlwm. Nws qhov ua tau zoo, sib xws, thiab kev ncaj ncees ntawm kev siv tshuab thaum kawg txiav txim siab seb kab puas muaj sia nyob cov xwm txheej hnyav lossis dhau mus ntev - lub sijhawm lav.
Yog vim li cas Load Resistance yog lub hauv paus ntawm Transmission Tower Safety
Cov pej thuam sib kis yuav tsum tiv thaiv ob qho tib si mus tas li thiab cov khoom thauj ib puag ncig. Cov loads tas mus li muaj xws li qhov hnyav ntawm cov conductors, insulators, thiab kho vajtse. Environmental loads npog cua, dej khov, thiab seismic zog. Tsim cov lej xws li IEC 60826 thiab ASCE / SEI 48 tau sau cov txheej txheem kev nyab xeeb feem ntau yog li ntawm 1.5 txog 2.5, nyob ntawm qhov tshwm sim ntawm kev ua tsis tiav. Cov yam tseem ceeb no tsuas yog muab kev tiv thaiv tiag tiag thaum cov hlau tiag tiag ua rau nws lub zog muaj zog.
Nyob rau hauv tej yaam num uas cov khoom yield tus nqi poob qis me ntsis hauv qab cov ntawv pov thawj, cov ceg tseem ceeb tau ntsib cov buckling hauv zos thaum lub sij hawm 50-xyoo cua daj cua dub. Cov npoo ntawm kev nyab xeeb thiab tsis ua haujlwm yog nqaim dua li ntau tus neeg yuav khoom xav. Qhov no yog vim li cas kev cia siab ib leeg rau cov ntawv qhia zeb thawj tsis txaus. Kev ntsuam xyuas txhua yam yuav tsum tau ua nyob rau hauv txhua qhov kev tsim khoom tom qab kev tsim khoom, nrog rau cov ntaub ntawv pov thawj thiab muaj rau cov neeg yuav khoom.
Hauv -Kev Ntsuas Hauv Tsev thiab Video-Cov Ntaub Ntawv Pom Zoo
Txhua lub coil xa tuaj yog tus naj npawb tshwj xeeb melting kub, tag nrho sau rau hauv daim ntawv pov thawj zeb thawj. Cov txheej txheem kev ntsuam xyuas zoo yog ua tiav ntawm cov khoom tiav. Kev ntsuam xyuas cuam tshuam siv Charpy V-cov qauv ntsuas ntsuas ntsuas qhov qis- qhov kub thiab txias thiab pab tiv thaiv kev tawg ntawm cov huab cua txias. Khoov kev kuaj pom tseeb formability thiab ua kom cov khoom muaj peev xwm tiv taus txias - dabtsi yog khoov thiab straightening yam tsis muaj cracking. Hla- txiav adhesion kuaj ntsuas lub zog sib txuas ntawm cov txheej tiv thaiv, txawm tias galvanized lossis pleev xim rau txheej. Rub-tawm kev kuaj adhesion muab ntau qhov ntsuas ntawm txheej adhesion. Kev ntsuas gloss ntsuam xyuas qhov sib npaug ntawm qhov sib npaug, uas cuam tshuam ncaj qha nrog txheej zoo thiab kav ntev.
Tag nrho cov txheej txheem sim rau txhua pawg yog vis dis aus - kaw, los ntawm cov qauv npaj mus rau qhov ntsuas zaum kawg. Cov ntaub ntawv kaw tseg no muaj nyob rau ntawm qhov kev thov, tso cai rau cov neeg yuav khoom los tshuaj xyuas txhua kauj ruam thiab pom raws nraim li cas cov khoom ua tau raws li txhua qhov kev sim. Qhov theem ntawm pob tshab no ua rau muaj kev ntseeg siab tias qhov toughness, ductility, txheej kev ncaj ncees, thiab qhov chaw tiav tau lees paub yog rov qab los ntawm cov pov thawj pom tau, traceable.
Yuav Ua Li Cas Charpy Impact Tests Tiv Thaiv Kev Txhaum Cai Hauv Cov Huab Cua Txias
Lub zog ib leeg tsis lav kev nyab xeeb. Hauv cov cheeb tsam txias, cov hlau yuav tsum tuav lub zog siab tshaj 27 J ntawm -20℃, thiab feem ntau 34 J ntawm -40℃. Hauv -Kev ntsuam xyuas kev cuam tshuam hauv tsev ib txwm lees paub tias Q345B, Q420B, thiab Q460C qib ua tau raws li cov cai no. Lawv cov zoo{13}}grain microstructures tiv thaiv cov ductile{14}} mus rau-nkig hloov uas ua rau muaj kev puas tsuaj loj nyob rau hauv ib puag ncig uas tsis kub. Qhov ntsuas qhov tseeb tiag tiag thiab cov duab yees duab sib raug tau muab yog li cov neeg yuav khoom tuaj yeem ntsuas qhov kev nyab xeeb ntawm lawv qhov tshwj xeeb lub caij ntuj no tsim kub nrog kev pom tag nrho.
Rau kev siv, Q345B sib raug zoo rau S355JR raws li EN 10025 thiab A572 Qib 50 raws li ASTM cov qauv. Q420B aligns nrog S420NL thiab A572 Qib 60. Q460C ntais ntawv S460NL thiab A572 Qib 65. Tag nrho peb qib muab yield zog ranges ntawm 345 MPa mus rau 460 MPa, nrog carbon sib npaug qhov tseem ceeb tswj hauv qab no 0.45% ntaub txhim khu kev qha
Vim li cas Coating Adhesion txiav txim siab Corrosion Service Life
Corrosion maj mam txo steel seem thickness, uas tuaj yeem ua rau ua tsis tiav ntxov. Kub-dip galvanizing yog txoj kev tiv thaiv tus qauv, tab sis nws lub sijhawm ua haujlwm ntev - yog nyob ntawm cov txheej txheej adhesion thiab uniformity. Hla-txiav thiab rub- tawm kev kuaj adhesion, ua ke nrog kev ntsuas gloss, paub meej tias cov txheej txheem zoo ib yam thiab ruaj khov. Rau ASTM A572 Qib 65 thiab cov qib zoo sib xws, cov ntsiab lus silicon raug tswj qis dua 0.06% los txhawb cov txheej txheem galvanized du nrog qhov nruab nrab tuab tuab tshaj 85 μm rau ISO 1461 cov cai.
Nyob rau hauv ntug dej hiav txwv ntsev- thaj tsam huab cua, qhov twg cov tshuaj chloride ua rau kom corrosion, txheej txheej txheej yuav tseem ceeb dua. Cov yeeb yaj kiab kaw cia tso cai rau kev txheeb xyuas tus kheej ntawm cov txheej txheem kev ua tau zoo, muab kev ruaj ntseg ntxiv rau ntau xyoo ntawm kev cuam tshuam hauv ib puag ncig hnyav.
Weldability thiab Joint Integrity hauv Tubular Ntauwd Fabrication
Welded kev twb kev txuas yog muaj nyob rau hauv niaj hnub tubular yees, thiab ib tug tsis zoo weld qhia kev nyuaj siab concentration ntsiab lus uas yuav pib tawg nyob rau hauv cyclic cua loading. Khoov cov txiaj ntsig kev xeem thiab cov ntaub ntawv cuam tshuam muab cov tswv yim tseem ceeb rau kev tsim nyog txheej txheem vuam. Kev tshuaj xyuas tshuaj suav nrog cov pa roj carbon sib npaug yog sib koom los pab cov neeg tsim khoom tsim kom tsim nyog preheat tsis thiab interpass kub. Cov yeeb yaj kiab sib txuas tuaj yeem muab los txhawb kev txhim kho cov txheej txheem thiab thib peb - tog tshuaj xyuas.
Rau kev siv ntauwd kis tau tus mob, tswj cov pa sib npaug hauv qab 0.45% thiab cov ntsiab lus sulfur hauv qab 0.035% txo qhov kev pheej hmoo ntawm qhov txias txias thaum lub sijhawm vuam. Cov tshuaj lom neeg muaj pes tsawg leeg txwv, ua ke nrog kev txheeb xyuas qhov nyuaj, muab cov neeg tsim khoom siv lub hauv paus txhim khu kev qha rau WPS txoj kev loj hlob.
Fatigue Performance Nyob rau hauv Cyclic Cua Loading
Cov tsev sib kis tau ntsib ntau lab cua- ua rau muaj kev ntxhov siab ntau dhau ntawm lawv lub neej tsim. Tus neeg xyuas pib galloping thiab aeolian kev co ua kom rov ua dua ntawm cov ntsiab lus sib txuas thiab cov tswv cuab kev sib tshuam. Hlau nrog cov khoom siv zoo ib yam thiab huv si, suav nrog- tswj microstructure tiv thaiv kev qaug zog tawg pib ua haujlwm zoo dua li cov khoom siv nrog cov ntaub ntawv tawg. Zoo-cov hlau nplej uas tsim los ntawm kev tswj cov dov kev coj ua qhia pom kev txhim kho kev qaug zog tawg kev loj hlob tsis kam, ncua kev pabcuam lub sijhawm ntawm kev tshuaj xyuas cov qauv.
Traceability thiab Video -Cov ntaub ntawv pov thawj zoo
Txhua kaujyog traceable los ntawm nws cov xov tooj cua sov, thiab kev ntsuam xyuas sab hauv yog tam sim no tag nrho cov yeeb yaj duab -cov ntaub ntawv, muab qhov tseeb, tamper- cov ntaub ntawv pov thawj ntawm qhov zoo. Cov neeg yuav khoom raug txhawb kom thov cov yeeb yaj kiab video rau kev txheeb xyuas batch random. Kev ntseeg siab hauv cov khoom siv yog los ntawm cov pov thawj pom tsis yog cov ntawv sau ib leeg.
Qhov project Experience thiab Commissioning Track Record
Cov khoom siv tau muab rau 220 kV txog 1,000 kV kab hla ntau thaj chaw, los ntawm ntug hiav txwv ntsev- thaj tsam huab cua mus rau alpine ice- kis tau yooj yim. Ib txoj haujlwm sawv cev koom nrog 500 kV kab ntawm 3,200 m qhov siab, qhov twg lub caij ntuj no kub ncav cuag -35℃thiab cov dej khov ntau tshaj 15 hli. Q420B coils tau siv rau txhua tus tswv cuab tseem ceeb, thiab cov kab tau ua haujlwm ntau tshaj tsib xyoos yam tsis muaj kev saib xyuas. Nyob rau hauv ib qho kev sib cais ntawm ntug dej hiav txwv, galvanized txheej thickness ntsuas tom qab yim xyoo ntawm kev pab cuam tseem nyob saum 65 μm, zoo nyob rau hauv tus qauv tsim rau 30 xyoo kev pab cuam lub neej.
Pab neeg ua haujlwm tshuaj xyuas txhua qhov kev tsim qauv hauv paus, pom zoo cov qib sib piv cov khoom thauj thiab kev nyab xeeb, thiab muab kev cob qhia vuam thiab galvanizing. Txhua qhov project muab tau dhau nws cov commissioning load tests.
Cov kauj ruam tom ntej rau koj qhov kev sib kis
Xaiv txoj cai steel kauj rau qhov siab -oltage kis tau tus mob yog ntau tshaj qhov kev txiav txim yuav khoom. Nws yog kev nqis peev hauv kev ruaj ntseg uas suav nrog kev ncaj ncees ntawm cov khoom siv, cov khoom siv hluav taws xob tuaj yeem siv tau -cov ntaub ntawv xov tooj, thiab cov ntaub ntawv pov thawj video pov thawj ntawm txhua qhov kev xeem zoo. Muab cov khoom thauj khoom tshwj xeeb thiab cov ntaub ntawv ib puag ncig kom tau txais daim ntawv thov qib, cov qauv siv sib piv, thiab cov yeeb yaj kiab sim raws li qhov kev thov. Daim ntawv qhia kev xa tawm dawb ntauwd steel xaiv kuj tseem muaj rau rub tawm, suav nrog qib sib piv, txheej txheej yuav tsum tau ua, thiab kev txiav txim siab vuam rau 220 kV txog 1,000 kV daim ntawv thov. Cov lus teb feem ntau yog muab rau hauv 24 teev.
Tau Txais Kev Qhia Txog Kev Xaiv Hlau Dawb & Kev Pabcuam Kev Pabcuam
Xa koj qhov kev sib kis ntau qhov project tsis pub dhau, peb yuav muab cov phiaj xwm qib steel sib xws, cov ntawv qhia tag nrho thiab cov ntaub ntawv teev video hauv 24 teev.
