Photovoltaic brackets (steel structures) ua lub "skeleton" ntawm photovoltaic fais fab chaw nres tsheb, txhawb nqa tag nrho photovoltaic array, ncaj qha cuam tshuam rau kev nyab xeeb, lub zog tsim hluav taws xob, thiab ntev - lub sijhawm ua haujlwm ruaj khov ntawm lub chaw nres tsheb fais fab. Lawv tsim kev pab cuam lub neej feem ntau yuav tsum tau ua kom haum rau tag nrho lub neej ntawm photovoltaic fais fab chaw nres tsheb (ntau tshaj 25 xyoo). Nyob rau hauv ib puag ncig sab nraum zoov, lawv yuav tsum tau tiv thaiv cov teeb meem xws li cua loads, daus loads, corrosion thiab lwm yam. Cov lus qhia no tau txheeb xyuas cov qauv tseem ceeb, kev hloov pauv ib puag ncig, thiab cov khoom siv tseem ceeb ntawm cov qauv tsim hluav taws xob photovoltaic, pab tsim cov phiaj xwm, EPC tuam txhab, thiab cov tswv rau kev tshawb fawb xaiv hom.
I. Kev Lag Luam Core Standards thiab Design Requirements
Kev tsim thiab kev lees paub ntawm photovoltaic brackets yuav tsum nruj me ntsis ua raws li cov qauv hauv lub tebchaws thiab kev lag luam kom muaj kev nyab xeeb ntawm cov qauv thiab ntev -lub sij hawm durability:
JG/T 490-2016 "Cov Lus Qhia Tshwj Xeeb rau Hnub Ci Photovoltaic System Brackets": Qhov no yog cov khoom lag luam hauv kev tsim kho, qhia meej meej tias cov brackets yuav tsum muaj lub zog txaus, nruj, thiab zoo tiv thaiv- corrosion thiab tiv thaiv- xeb muaj peev xwm. Kev xaiv cov khoom yuav tsum ua tau raws li qhov yuav tsum tau ua los tiv thaiv corrosion. Cua load thiab lub ntiajteb txawj nqus load xam thiab kev lees txais yuav tsum ua raws li GB 50205-2020 "Steel Structure Engineering Construction Quality Acceptance Specification".
Tsim kev pab cuam lub neej: Hauv av photovoltaic fais fab chaw nres tsheb taug qab brackets feem ntau muaj kev pab tsim lub neej ntawm 25 xyoo; Lub tsev koom ua ke Photovoltaics (BIPV) tej yaam num yuav tsum tau ua raws li lub ntsiab lub tsev qauv lub neej. Cov qauv kev nyab xeeb feem ntau yog qib peb.
Anti-corrosion thiab foundation yuav tsum: Brackets yuav tsum tau siv los tiv thaiv- corrosion thiab anti- xeb cov ntaub ntawv, bolt kev twb kev txuas yuav tsum tau ntseeg tau (siab- lub zog bolts ua raws li JGJ 82 tus qauv), thiab lub hauv paus yuav tsum siv cov pob zeb saum C25. Kev lees txais qhov project tsom mus rau kev tshuaj xyuas cua tsis kam thiab seismic tsis kam muaj peev xwm.
Fais fab warranty txuam: Photovoltaic modules feem ntau muab 25- xyoo linear zog lav (thawj xyoo attenuation 2-3%, ces 0.5-0.65% ib xyoos, hwj chim tsis tsawg tshaj li 80-81.4% tom qab 25 xyoo). High-quality steel qauv brackets, los ntawmkub-dip galvanizinglos yog zinc-aluminium-magnesium thiab lwm yam tshuaj tiv thaiv- kev kho corrosion, tuaj yeem ua tiav 25-30 xyoo lossis tseem ua haujlwm ntev dua.
Cov kev lag luam tam sim no hais txog kev siv cov ntaub ntawv zoo ib puag ncig, xws li hloov qee cov tsoos kub-dip galvanizing nrog zinc- txhuas- magnesium coatings kom ua tau raws li cov hom phiaj ntawm carbon neutrality thiab ntev - lub sij hawm ua haujlwm ruaj khov xav tau.
II. Hom kev ua tsis tiav thiab cov kev sib tw hauv ntau qhov chaw huab cua sib txawv
Photovoltaic steel qauv yog ntev-ntev tawm sab nraum zoov, raug rau corrosion, cua thiab xuab zeb, khov-thaw thiab lwm yam. Hom kev ua tsis tau zoo sib txawv hauv ntau thaj tsam:
Cov suab puam / arid (xws li Northwest Gobi, suab puam): Feem ntau ntsib cua thiab xuab zeb puas thiab teeb meem ntawm plua plav. Cua thiab xuab zeb ntws yuav ua rau cov plua plav tsub zuj zuj ntawm cov khoom siv, yaig thiab puas, thiab cov qauv kev puas tsuaj, txo cov hluav taws xob tsim hluav taws xob; nto erosion thiab tsub zuj zuj ntxiv exacerbate cua yaig. Cov txheej txheem steel txheej yog nquag hnav kom nrawm vim cov xuab zeb cuam tshuam. Nws yog ib qho tsim nyog sau cia tias photovoltaic arrays tuaj yeem txo qis ze ntawm - av cua ceev los ntawm 20-60%, ua lub luag haujlwm hauv kev tiv thaiv cua thiab xuab zeb fixation ecology, tab sis av compaction thaum lub sij hawm tsim kho yuav ua rau muaj kev pheej hmoo ntawm av yaig ib ntus.
Ntug hiav txwv / siab ntsev pos huab: ntsev pos corrosion yog qhov kev hem thawj loj tshaj plaws. High humidity thiab siab ntsev ib puag ncig yuav ceev hlau corrosion. Cov pa roj carbon zoo tib yam lossis kub -dip galvanized txheej yog qhov ua rau tsis ua haujlwm sai, ua rau txo qis lub zog thiab cuam tshuam rau kev nyab xeeb ntawm cov qauv.
Plateau / txias qhov chaw: khov -thaw cycles yooj yim ua rau cov khoom embrittlement, txheej tawg, thiab rov qab tev tawm. Qhov kub sib txawv loj kuj tseem yuav ua rau muaj kev ntxhov siab ntau ntxiv.
Lwm yam huab cua huab cua: Cov av noo nyob rau hauv cov cheeb tsam sov yog feem ntau ntub cua sov corrosion; lawg, daus hnyav, typhoon cheeb tsam yuav tsum tau tsom mus rau siab - lub zog cuam tshuam kev tsim qauv.
Zuag qhia tag nrho, cov tsoos kub-dip galvanizing muaj qhov ua haujlwm tsis txaus nyob rau hauv ib puag ncig hnyav, thaum cov ntaub ntawv tshiab xws lizinc hlau magnesiummuaj kev tiv thaiv corrosion mus txog 6-15 npaug ntawm nws (feem ntau yog li 10 zaug), ua kom lub neej ntev ntev.
III. Mainstream Steel Structure Material Solutions
Tam sim no, photovoltaic brackets tsuas yog siv cov pa roj carbon steel substrates, ua tiav los tiv thaiv- corrosion los ntawm kev kho saum npoo, feem ntau yog siv rau hauv cov chaw siv hluav taws xob hauv av thiab kev lag luam thiab kev lag luam ru tsev. Cov hauv qab no yog kev sib piv ntawm cov ntsiab lus tseem ceeb:
Kub-dip galvanized steel (Q235/Q355, thiab lwm yam)
Specifications: Thickness 1.5-8 hli (pile foundations thicker).
Qhov zoo: siab zog, qis nqi, zoo toughness, zoo heev seismic kev ua tau zoo.
Qhov tsis zoo: Tom qab ua tiav, kub -dip galvanizing yuav tsum tau, cov nqi thauj khoom yog siab; txiav qhov chaw yooj yim tsim cov ntsiab lus pib corrosion; durability yog nruab nrab nyob rau hauv hnyav ib puag ncig xws li ntug hiav txwv dej thiab suab puam.
Siv tau cov xwm txheej: Cov cheeb tsam hauv av dav dav, cov kab ke ruaj khov.
Lub neej: Txog 25 xyoo.
Zinc-aluminium-magnesium (Zn-Al-Mg) coated steel (tawm hauv paus)
Txheej txheej: Muaj Zn + Al (1.5-11%) + Mg (1.5-3%).
Cov txiaj ntsig tseem ceeb: Corrosion resistance yog 6-15 npaug ntawm cov tsoos kub-dip galvanizing, nrog txiav ntug tus kheej- kho (tus kheej- kho) muaj peev xwm, muaj zog hnav tsis kam, ib puag ncig tus phooj ywg thiab tsis muaj kuab paug; tuaj yeem ua tau txias, ua haujlwm yooj yim.
Qhov tsis zoo: Tsis haum rau siab - qhov kub thiab txias (yuav cuam tshuam rau lub zog hauv zos), tus nqi pib dua me ntsis.
Specifications: Thickness 1.5-5mm, feem ntau siv S350GD, S420GD high-strength steel.
Cov xwm txheej siv tau: Cov chaw nres tsheb loj hauv av, cov suab puam, tidal flats, ntug hiav txwv dej thiab lwm qhov chaw hnyav hnyav.
Lub neej: Txog 30-35 xyoo, cov khoom lag luam hloov pauv kub-dip galvanizing.
Stainless hlau
Kev tiv thaiv corrosion siab, haum rau qhov chaw corrosive heev (xws li muaj zog ntsev pos huab). Lub zog zoo, tab sis tus nqi siab tshaj, yog rau cov tsis yog - kev xaiv nyiaj txiag loj, nqaim ntau yam.
Lwm yam khoom siv
Aluminium alloy brackets: Lub teeb yuag, muaj zog tiv thaiv corrosion, tab sis lub zog thiab cov yam ntxwv ntawm tus nqi sib txawv, haum rau qhov hnyav - cov phiaj xwm ru tsev.
Weathering steel: Ua tau zoo nyob rau hauv huab cua puag ncig, tab sis tseem xav tau cov txheej txheem tiv thaiv ntxiv hauv cov ntsev siab lossis cov pa phem.
Cov lus pom zoo xaiv: Cov khoom xaiv xaiv + txheej tuab + kev saib xyuas tsis tu ncua yog lub tswv yim tseem ceeb. Nyob rau hauv ib puag ncig atmospheric, weathering steel ua tau zoo; nyob rau hauv siab ntsev pos huab los yog muaj zog cua thiab xuab zeb cheeb tsam, precisely zinc-aluminium-magnesium coated steel thiab tsim nyog nce txheej thickness.
IV. Xaus thiab yav tom ntej Outlook
Photovoltaic steel qauv yog cov txheej txheem tseem ceeb los xyuas kom meej ntev - lub sij hawm txhim khu kev qha fais fab ntawm cov chaw nres tsheb fais fab. Nrog rau kev nce qib ntawm ob lub hom phiaj ntawm cov pa roj carbon monoxide thiab qhov nce ntawm cov phiaj xwm loj, qhov yuav tsum tau ua rau cov khoom siv bracket lub neej ntev, kev tiv thaiv corrosion siab, thiab qis - carbon ib puag ncig tiv thaiv tau nce siab. Tshiab coated steels xws li zinc-aluminium-magnesium yog sai hloov cov tsoos kub-dip galvanizing thiab dhau los ua kev lag luam tseem ceeb. Hauv kev txiav txim siab txog qhov project- ua, nws raug pom zoo kom muab cov xwm txheej tshwj xeeb thiab cov nqi ntawm lub neej voj voog (LCOE) rau kev ntsuam xyuas dav dav, xaiv cov kev daws teeb meem zoo sib xws, thiab ua raws li cov qauv tsim, kev tsim kho, thiab kev ua haujlwm thiab kev saib xyuas kom ua tiav kev ua haujlwm ruaj khov ntawm ntau tshaj 25-30 xyoo.
