Yuav Ua Li Cas Ntxiv Kev Pabcuam Lub Neej ntawm Aluminium Photovoltaic Bracket Accessories

Nyob rau hauv lub hnub ci photovoltaic (PV) systems, mounting qauv plays lub luag hauj lwm tseem ceeb nyob rau hauv kev ruaj ntseg modules, withstanding cua loads, thiab hloov loads mus rau lub hauv paus. Thaum PV modules feem ntau suav hais tias yog lub kaw lus "lub siab," ntau yam khoom siv mounting-xws li clamps, rail connectors, bolts, thiab gaskets -ua raws li "pob qij txha" thiab "ligaments" uas tuav cov qauv kev ncaj ncees thiab ua kom ntev - lub sij hawm, ruaj khov. Txawm hais tias lawv qhov me me, cov khoom no yog qhov txiav txim siab seb puas muaj PV cog tuaj yeem ua haujlwm nyab xeeb thiab ua haujlwm tau zoo thoob plaws nws lub neej tsim ntawm 25 xyoo lossis ntau dua.

 

Ntawm cov khoom siv ntau yam siv rau cov tshuab mounting, aluminium alloys (tshwj xeeb yog 6063-T5/T6 series) tau dhau los ua qhov kev xaiv tseem ceeb hauv kev lag luam thoob ntiaj teb vim lawv lub zog siab - rau - qhov hnyav piv, zoo heev corrosion resistance, yooj yim ntawm fabrication, thiab nqi-effectiveness. Txawm li cas los xij, ntau tus tswv thiab cov neeg tsim khoom poob rau hauv qhov kev xav tsis zoo tias "txhuas txhuas tsis xeb," ua rau lawv tsis saib xyuas qhov tsim nyog thiab kev tiv thaiv kev ntsuas. In reality, while a dense oxide layer naturally forms on the surface of aluminum alloys, this layer can be compromised in specific environments-such as areas with high humidity, heavy salt spray, industrial pollution, or prolonged water accumulation-potentially leading to corrosion, pitting, and even structural failure. Yog li ntawd, kev nkag siab txog kev tshawb fawb txog kev txhim kho corrosion thiab kev siv cov kev tiv thaiv zoo yog qhov tseem ceeb rau kev siv lub neej ntawm cov khoom siv mounting.

 

Kab lus no tau txheeb xyuas tsib yam tseem ceeb uas ua rau kev laus ntawm aluminium alloy PV mounting accessories. Nws kuj tseem muaj cov tswv yim tsim nyog rau kev siv lub neej txuas ntxiv - suav nrog kev xaiv cov khoom siv, cov qauv kev teeb tsa, thiab kev saib xyuas niaj hnub- los pab xyuas kom koj cov nroj tsuag PV ua tiav "kev txhawj xeeb- pub dawb 25 xyoo" lub neej.

 

 

Galvanic Corrosion-Qhov feem ntau "Invisible Killer"
Thaum cov khoom siv aluminium alloy tuaj rau hauv kev sib cuag ncaj qha nrog stainless hlau bolts, carbon steel grounding xov hlau, los yog tooj liab cable lugs nyob rau hauv ib puag ncig raug los nag, condensation, los yog ntsev tsuag, ib tug galvanic cell Circuit Court yog tsim. Vim tias lub peev xwm electrode ntawm txhuas yog qis dua li ntawm cov hlau tsis muaj steel lossis carbon hlau, cov txhuas ua raws li cov anode thiab corrodes nyiam, ua cov hmoov dawb oxide (feem ntau hu ua "dawb xeb"). Hauv qhov xwm txheej hnyav, qhov no ua rau muaj kev sib txuas xoob thiab txo qis hauv kev thauj khoom -cov kabmob muaj peev xwm. Txhim kho cov khoom siv hluav taws xob (ua los ntawm cov ntaub ntawv xws li nylon, EPDM roj hmab, lossis PTFE) ntawm txhua qhov sib txawv ntawm cov hlau sib txuas kom tawg cov hluav taws xob hluav taws xob. Rau kev sib txuas hauv av, siv aluminium lossis tinned copper lugs thiab siv cov khoom siv hluav taws xob los tiv thaiv cov tooj liab ncaj qha - aluminium contact. Hauv thaj chaw ntug dej hiav txwv lossis thaj chaw uas muaj huab cua hnyav, nws raug nquahu kom siv bolts nrog lub tes tsho insulating lossis bimetallic ntxhua khaub ncaws (xws li txhuas-stainless steel hloov pauv).

 

Crevice Corrosion thiab Pitting-Hidden "Ulcers"
Yog dej, hmoov av, los yog ntsev deposits nyob rau hauv lub crevices -xws li nruab nrab ntawm lub taub hau ntsia liaj qhov rooj thiab lub profile nto, los yog nyob rau hauv sib tshooj ntawm lub clamp thiab lub tsheb ciav hlau - ib tug oxygen concentration cell forms. Cov cheeb tsam hauv qhov crevice muaj cov ntsiab lus oxygen tsawg thiab ua raws li cov anode, tab tom muaj kev sib cais hauv cheeb tsam, thaum thaj chaw sab nraud muaj cov ntsiab lus oxygen siab thiab ua raws li cathode, ua kom muaj corrosion hauv qhov crevice. Thaum hom kev xeb no pib, nws feem ntau kis mus rau hauv qhov "ulcer-zoo li" yam; vim nws tsis yooj yim rau kev txheeb xyuas, nws ua rau muaj kev pheej hmoo loj ntawm kev nyab xeeb. Thaum lub sij hawm kev teeb tsa, ua ntej- tho qhov qhov dej (6-8 mm inch) ntawm qhov chaw uas muaj dej tsub zuj zuj, xws li qhov kawg profile thiab thaj chaw hauv qab clamps, kom ntseeg tau tias cov dej los nag raws sij hawm. Lub foob pob zeb siv cov khoom siv nruab nrab silicone sealant (acidic sealants yog nruj me ntsis txwv tsis pub vim lawv corrode txhuas), tab sis tshuaj xyuas lub sealant tsis tu ncua rau kev laus los yog tawg.
Txhua rau lub hlis, yaug lub tshuab txuas nrog lub siab - rab phom dej siab (ntawm tus qauv kev khiav hauj lwm siab) lossis tus neeg saib xyuas tsis tu ncua, ua tib zoo saib xyuas cov crevices thiab cov kab noj hniav sab hauv ntawm cov profiles.

 

Stress Corrosion Cracking (SCC)-Ib "Lub Sijhawm Bomb" nyob rau thaj tsam txias, ntub
Nyob rau hauv ib puag ncig uas muaj cov av noo siab, muaj kua qaub los nag, los yog cov tshuaj tsuag ntsev ntawm ntug dej hiav txwv, siab -lub zog aluminium alloys (xws li 6061-T6 thiab 6063-T6) tuaj yeem raug cuam tshuam nrog kev ntxhov siab corrosion tawg thaum raug kev nyuaj siab tensile. Hom kev ua tsis tiav no yog tam sim ntawd; Cheebtsam feem ntau tawg yam tsis muaj kev ceeb toom, ua rau muaj xwm txheej cuam tshuam nrog kev sib tsoo. T6-temper (peak-aged) aluminium alloys yog nyiam, raws li lawv muaj kev ntxhov siab corrosion kuj piv rau T5-temper alloys. Bolt preload yuav tsum nruj me ntsis tswj kom tsis txhob muaj zog tensile ntau dhau los ntawm overtightening. Kev siv lub torque wrench yog pom zoo, ua raws li cov chaw tsim khoom tshwj xeeb torque qhov tseem ceeb (piv txwv li, 20-25 N·m rau M8 bolts). Rau tej yaam num nyob rau hauv lub ntug dej hiav txwv cheeb tsam nrog high ntsev tsuag raug, nws raug nquahu kom siv profiles nrog ib tug anodized txheej thickness ntawm ntau tshaj los yog sib npaug zos rau 25 μm (AA25) los yog siv ib tug fluorocarbon (PVDF) txheej los txhim kho corrosion kuj.

 

Mechanical Wear and Fretting-"Chronic Fatigue" Induced by Cua Vibration
Photovoltaic fais fab nroj tsuag raug cuam tshuam rau ib puag ncig ntuj rau ncua sij hawm. Cua-induced vibration (tshwj xeeb tshaj yog nyob rau ntev-cantilever clamps) thiab thermal expansion/contraction tshwm sim los ntawm diurnal kub fluctuations yuav induce feeb txheeb ze zawv zawg ntawm bolted kev twb kev txuas. Qhov fretting hnav no maj mam erodes cov oxide txheej, nthuav tawm cov txhuas tshiab thiab ua rau corrosion. Nyob rau tib lub sijhawm, fretting ua rau poob ntawm bolt preload thiab exacerbates loosening, tsim lub voj voog tsis zoo ntawm "hnav-loosening-accelerated hnav." Kev tiv thaiv -xov cov txiv ntseej (xws li nylon-Insert locknuts) lossis xov-locking adhesives (xws li Loctite 243) yuav tsum tau siv los xyuas kom cov bolts nyob ruaj ntseg hauv kev vibration. Cov tshuab ntxhua khaub ncaws loj yuav tsum tau nruab rau hauv qab lub taub hau taub hau thiab cov txiv ntseej kom faib cov kev ntxhov siab thiab txo qis hauv zos indentation ntawm qhov profile nto. Tom qab kev teeb tsa, "torque mark" yuav tsum tau kos nrog cov xim pleev xim thoob plaws ntawm qhov sib txuas ntawm lub taub hau ntsia liaj qhov rooj thiab qhov profile kom pab txhawb kev tshawb pom sai ntawm kev xoob thaum kuaj xyuas.

 

 

Kev xaiv cov khoom siv thiab kev kho deg-Kev sib tsoo ntawm qhov chaw
Kev xaiv 1: Anodizing. Pom zoo txheej thickness yog ntau dua los yog sib npaug rau AA15μm (tus qauv sab nraum zoov ib puag ncig) los yog AA25μm (cov ntug dej hiav txwv los yog hnyav hnyav). High- zoo anodic oxide zaj duab xis muab siab hardness thiab hnav tsis kam, nrog rau tus kheej - kho muaj peev xwm (lub sab hauv re-oxidizes yog puas). Kev xaiv 2: Hmoov Txheej. Siv polyester (PE) los yog polyvinylidene fluoride (PVDF) hmoov txheej nrog lub thickness ntawm 60-120μm. PVDF coatings muab cov huab cua tiv thaiv zoo, ua rau lawv zoo tagnrho rau cov cheeb tsam uas muaj UV hluav taws xob siab. Kev xaiv 3: Bolt Xaiv. Kev siv cov qauv carbon steel bolts yog nruj me ntsis txwv tsis pub rau cov haujlwm sab nraum zoov (txawm tias cov galvanized yuav ua tsis tiav hauv 5-10 xyoo). A2-70 (304) lossis A4-80 (316) stainless hlau bolts raug pom zoo. Rau cov phiaj xwm ntug dej hiav txwv, 316-qib stainless hlau yog qhov kev xaiv zoo dua; nws cov ntsiab lus molybdenum ho txhim khu kev tiv thaiv rau chloride-induced pitting corrosion.

 

Kev teeb tsa thiab kev saib xyuas-Cov ntsiab lus txiav txim siab ua tiav
Kev zawm ntau dhau tuaj yeem strip threads lossis tsoo cov profiles, thaum tsis txaus zawm ua rau xoob. Ib txwm siv lub preset torque wrench thiab calibrate nws tsis tu ncua. Reference torque qhov tseem ceeb: M6 (8–10 N·m), M8 (20–25 N·m), M10 (35–40 N·m). Kev soj ntsuam kws tshaj lij raug pom zoo tsawg kawg ob zaug hauv ib xyoos (ua ntej thiab tom qab lub caij ntuj nag). Cov ntsiab lus tseem ceeb hauv kev tshuaj xyuas suav nrog kev kuaj xyuas cov bolts xoob (tuaj yeem siv cov cim kev sib raug zoo), kev laus los yog tawg gaskets, txhaws cov qhov dej, thiab cov sealant detached. Ntxuav siv cov dej tshiab los yog cov tshuaj ntxuav tes tsis zoo (pH 6–8) nrog cov txhuam hniav mos; nruj me ntsis zam cov kua qaub los yog alkaline ntxuav (xws li oxalic acid los yog caustic soda) thiab cov ntaub plaub hlau los tiv thaiv kev puas tsuaj rau oxide zaj duab xis.

 

Kev tsim qauv tsim kom zoo-Kev Tiv Thaiv Kev Kho Mob
Adding support posts to the mid-span of long rails (e.g.,>6 m) tuaj yeem txo qhov deflection thiab cua -ua kom muaj kev vibration. Xaiv qhov profile hla- ntu nrog cov kav dej sab hauv lossis ua ntej- tho qhov dej ntawm qhov qis tshaj plaws ntawm cov profiles kom tiv thaiv cov dej hauv cov kab noj hniav. Rau cov cheeb tsam uas muaj plua plav, qhov qaij lub kaum sab xis yuav tsum tau nce kom tsim nyog (piv txwv li, los ntawm 15℃mus rau 20 degree)-thaum tswj cov khoom tsim hluav taws xob{11}}kom siv cov dej nag rau nws tus kheej- ntxuav thiab txo cov teebmeem corrosive ntawm qhov chaw los ntawm plua plav adhesion.

 

 

Rau siab -salinity/coastal area:

Siv marine- qib aluminium alloy (piv txwv li, 6061-T6) nrog ob npaug- txheej electroless npib tsib xee-phosphorus plating (25μm thickness), los yog txheej txheej ntawm kub-dip galvanizing ntxiv rau hmoov txheej.
Rau siab- thaj chaw UV (siab- thaj chaw siab):

Xaiv cov xim fluorocarbon (PVDF cov ntsiab lus Ntau dua lossis sib npaug li 70%) nrog ntxiv UV absorbers (xws li UV-531).

Rau thaj chaw uas muaj qhov kub thiab txias hloov pauv:

Siv cov alloys uas tsis tshua muaj coefficients ntawm thermal expansion (piv txwv li, 6063-T6) thiab sib txuas cov slotted qhov kom haum rau thermal expansion thiab contraction.

 

Kev ntsuam xyuas ntsev tsuag yog ua raws li Txoj Kev Ntsig Ntsev Tsuag (NSS) txoj kev tau teev tseg hauv GB / T 10125, yuav tsum tsis muaj hlau xeb tom qab 1,000 teev. UV aging tests yog ua raws li ISO 4892-3 (siv UV-A 340 teeb) rau 2,000 teev, nrog rau qhov yuav tsum tau txheej xim txawv tus nqi (ΔE) tsawg dua lossis sib npaug li 2.0. Kev ntsuas cov khoom siv tshuab ua raws li IEC 61215 tus qauv, npog cov khoom zoo li qub (2,400 Pa) thiab dynamic loads (1,000 Pa, 10,000 cycles).

 

 

Lub mounting system feem ntau muajntawm lub ntsiab beam / purlin connectors thiab kab pheeb ces kaum brace mounts, tsim kom ua tau siab tensile zog (Ntau tshaj los yog sib npaug rau 230 MPa) thiab tiv taus cua siab (xws li, 2400 Pa) thiab daus loads (xws li, 5400 Pa).

Module fixation Cheebtsamfeem ntau suav nrog nruab nrab-clamps, kawg-clamps, thiab clamps caij nplooj ntoos hlav; lawv feature elastic deformation ntawm ntau dua los yog sib npaug rau 1 hli thiab qaug zog tsis kam (sab nrog 100,000 cycles yam tsis muaj pob txha).

Cov khoom siv hluav taws xob sib txuassuav nrog grounding clips (conductive clips) thiab cable clips, muab conductivity Ntau dua los yog sib npaug rau 55% IACS thiab tiv thaiv kev sib cuag tsawg dua los yog sib npaug rau 0.5 Ω (kom paub meej grounding txuas ntxiv).

Tracking system Cheebtsammuaj kev sib txuas ntawm cov tsav tsheb sib txuas thiab cov kabmob vaj tse, uas muaj kev hnav tsis kam (nto hardness Ntau dua lossis sib npaug rau HV500) thiab siab precision (siab ntev ± 0.1 hli).

Inverter/combiner box tsev nyob feem ntausuav nrog cov dab dej kub thiab cov mounting brackets, featuring thermal conductivity Ntau dua los yog sib npaug rau 150 W / (m·K) thiab ua tau raws li IP65 tiv thaiv ntsuas.

 

Los ntawm kev xaiv cov khoom siv tshawb fawb, kev teeb tsa tus qauv, thiab kev saib xyuas tsis tu ncua, koj tuaj yeem txuas lub neej kev pab cuam ntawmaluminium alloy PV mounting Cheebtsamlos ntawm tus qauv 15 xyoo mus rau ntau dua 25 xyoo- ua tib zoo ua raws li kev tsim lub neej ntawm PV modules lawv tus kheej. Qhov no sawv cev tsis yog tsuas yog kev nqis peev xwb, tab sis kev tiv thaiv kev tiv thaiv rau lub tshuab hluav taws xob ntev ntev - rov qab los ntawm kev nqis peev.

 

Yog tias koj tab tom npaj ib txoj haujlwm PV tshiab lossis tab tom nrhiav kev txhim kho corrosion ntawm cov nroj tsuag uas twb muaj lawm, thov hu rau peb pab pawg engineering. Nrog rau ntau tshaj kaum xyoo ntawm kev tsim thiab tsim khoom ntawm PV mounting Cheebtsam, peb muab: customized anti-corrosion solutions tailored rau tej qhov project ib puag ncig (xws li cov chaw ntug hiav txwv dej, thaj chaw muaj, los yog alpine cheeb tsam); xaiv high-corrosion-kuj (C4/C5) aluminium profiles thiab stainless hlau hardware; thiab installation kev taw qhia nrog rau torque specification phau ntawv.

 

Tiv tauj peb hnub no kom tau txais cov kev daws teeb meem thiab xyuas kom koj lub chaw tsim hluav taws xob PV ua tiav kev txhawj xeeb tiag tiag - ua haujlwm pub dawb rau 25 xyoo.