Offshore Roj Platform Thiab Offshore Cua Fais Fab
Hauv kev ua haujlwm sab nrauv cua fais fab, lub hauv paus piles rau hauv dej hiav txwv yuav corroded los ntawm seawater. Txhawm rau ua kom lub neej kev pab cuam ntawm steel pawg, nws yog ib qho tsim nyog yuav tsum tau ua los tiv thaiv - tiv thaiv corrosion rau lawv. Tam sim no, nws yog ib qho kev sib xyaw ua ke ntawm lub cev tiv thaiv- corrosion (coatings) thiab electrochemical anti-corrosion (cathodic tiv thaiv).
Lub hauv paus ntsiab lus ntawm kev tiv thaiv cathodic: Nws yog los ua kom cov khoom siv hluav taws xob ntau ntxiv rau cov hlau, kom tag nrho cov hlau tiv thaiv yog nyob rau hauv lub xeev ntawm electron tshaj, thiab tag nrho cov ntsiab lus ntawm cov hlau nto mus txog tib lub peev xwm tsis zoo.
Kev tiv thaiv Cathodic tam sim no feem ntau muaj ob lub tswv yim: ib qho yog sacrificial anode cathodic tiv thaiv, thiab lwm yam yog impressed tam sim no cathodic tiv thaiv.
cathodic tiv thaiv nrog txiab anode impressed tam sim no cathodic tiv thaiv
Sacrificial anode tiv thaiv txoj kev:
Txoj kev sacrificial anode yog cov txheej txheem uas siv hluav taws xob sib txuas ntawm cov hlau los yog cov hlau uas muaj peev xwm ua kom muaj zog ntau dua li cov hlau kom tiv thaiv cov hlau kom tiv thaiv. Qhov tam sim no generated los ntawm kev nruam corrosion thiab dissolution ntawm hlau yog siv los tiv thaiv lwm yam hlau.
Sacrificial anode nyob rau hauv seawater feem ntau yog aluminium alloy.
- Qhov zoo thiab qhov tsis zoo:
- Qhov zoo:
Txoj kev tiv thaiv anode sacrificial yog ib qho - lub sij hawm peev thiab qhov pib yuav tsum tsis muaj nqi kho thaum lub sijhawm ua haujlwm. Kev siv tus nqi ntawm kev tiv thaiv tam sim no kuj siab heev thiab tshaj - kev tiv thaiv yuav tsis tshwm sim.
- Qhov tsis zoo:
- Lub peev xwm tsav tsheb tsawg. Tom qab cov kab mob Marine txuas thiab anodic corrosion tshwm sim, qhov kev hloov kho ntawm qhov kev tiv thaiv tam sim no ua rau nqaim thiab nqaim. Ib tug loj tus naj npawb ntawm kev txi anodes yuav tsum tau welded rau ntawm steel pawg.
- Lub sijhawm tiv thaiv cathodic muaj txiaj ntsig yog txwv los ntawm kev ua neej nyob ntawm kev txi anode thiab feem ntau yog 10 txog 15 xyoo.
- Thaum lub sij hawm tiv thaiv txheej txheem, ib tug loj npaum li cas ntawm hnyav hlau ua paug raug tso tawm rau hauv dej hiav txwv. Kev teeb tsa yog lub sijhawm- siv thiab ua haujlwm hnyav, uas ntxiv qhov hnyav ntxiv rau lub cev steel pawg.
- Kev tiv thaiv cathodic feem ntau yog siv thaum txheej txheej steel pawg ntawm lub cev puas tsuaj nyob rau theem tom qab, thiab kev hloov pauv hauv cov theem tom qab yuav luag tsis tuaj yeem.
Txaus siab rau txoj kev tiv thaiv cathodic tam sim no:
Txoj kev zoo siab tam sim no cathodic tiv thaiv txoj kev suav nrog kev siv hluav taws xob ncaj qha tam sim no hauv cov kab hauv Circuit Court thiab, nrog kev pab ntawm ib qho khoom siv hluav taws xob, siv cov hluav taws xob ncaj qha rau cov hlau kom tiv thaiv kom ua tiav kev tiv thaiv.
Qhov zoo siab tam sim no cathodic tiv thaiv kab ke yog npaj thiab tsim raws li cov qauv sib txawv ntawm cov cua turbine foundation, muab tag nrho thiab optimized tsim kev daws teeb meem thiab kev tiv thaiv zoo tshaj plaws rau cov cuab yeej ntawm offshore cua fais fab tej yaam num.
- Qhov zoo thiab qhov tsis zoo:
- Qhov zoo:
- Nws nta lub zog tsav tsheb siab thiab tuaj yeem tswj tau cov zis ntawm cathodic tiv thaiv tam sim no nyob rau hauv ntau yam.
- Nws kuj tseem siv tau rau hauv hnyav corrosive tej yam kev mob los yog ib puag ncig nrog siab resistivity. Qhov kev tiv thaiv yog loj. Thaum qhov zoo ntawm cov tshuaj tiv thaiv -corrosion txheej ntawm cov raj xa dej yog qhov zoo, ob pawg ntawm cov txheej txheem tiv thaiv cathodic tam sim no tuaj yeem tiv thaiv tag nrho cov pawg hlau.
- Qhov zoo siab tam sim no cathodic tiv thaiv system yog tsim los kom muaj kev pab cuam lub neej ntev thiab tuaj yeem muab kev tiv thaiv ntev.
- Nws ua rau tsis muaj kuab paug rau ib puag ncig. Qhov zoo siab tam sim no cathodic tiv thaiv system yuav tsis tso cov hlau hnyav hnyav rau hauv dej hiav txwv.
- Nws yog ib qho yooj yim rau nruab thiab tsuas yog yuav tsum tau flange kev twb kev txuas installation, tsis tas yuav tsum tau vuam installation.
- Qhov tsis zoo:
- Thaum lub sijhawm ua haujlwm, nws tsis tuaj yeem ua yam tsis muaj lub zog hluav taws xob sab nraud thiab yuav tsum tau siv hluav taws xob tas mus li thoob plaws hauv lub xyoo.
- Thaum lub sijhawm ua haujlwm ntawm cathodic tiv thaiv kab ke, kev tswj xyuas nruj thiab kev tswj xyuas yuav tsum tau ua.
Muaj pes tsawg leeg ntawm kev txaus siab tam sim no cathodic tiv thaiv system:
- Transformer rectifier
- Pab anode
- Siv electrode
- Chaw taws teeb saib xyuas qhov system