Liindastering tse kang oli, khase, lik'hemik'hale le matla, liphaephe li jara boikarabelo bo boima ba ho tsamaisa mecha ea litaba, joalo ka methapo ea mali. Leha ho le joalo, liphaephe tsena li kotsing ea ho bola ka lebaka la{1}}ea ho lula nako e telele ho mongobo, lik'hemik'hale tse senyang, kapa mocheso o feteletseng. Sena ha se khutsufatse bophelo ba bona ba ts'ebeletso feela empa se ka lebisa liketsahalong tsa polokeho tse kang ho lutla le ho phatloha. Ho hlaha ha corrosion-peipi ea tšepe e sa sebetseng ho rarolla bothata bona. Ka ts'ebetso e khethehileng, ho thehoa lera le sireletsang holim'a phala ea tšepe, e sebetsang joaloka thebe e sireletsang, e atolosa haholo nako ea bophelo ba phala le ho netefatsa ts'ebetso e sireletsehileng ea tsamaiso.
1. Boleng ba Corrosion-Resistant Steel Pipe: Motsoako oa Pipe ea tšepe le Layer e Sireletsang
Bohareng ba eona, peipi ea tšepe e sa jeng-e ntse e le phala e tloaelehileng ea tšepe (joalo ka e se nang moroallo, e tsoetsoeng ka moea o mosoeu, kapa e otlolohileng{1}}ea sekoli e otlolohileng), empa e fapane ka hore ntho e sa jeng{2}}e sebelisoa bokaholimong ba kahare le kantle ba phala. Likarolo tsena tse sireletsang li ka aroloa ka mekhahlelo e meraro ho ipapisitsoe le thepa le ts'ebetso e sebelisitsoeng: ho roala, lesela le ts'ireletso ea kutu ea electrochemical. Ho roala ke mokhoa o sebelisoang ka ho fetisisa oa theknoloji ena.
Lisebelisoa tse tloaelehileng tsa ho roala li kenyelletsa epoxy powder coating (FBE), tse tharo-layer polyethylene (3PE), tepi e khomarelang ea polyethylene, le polyurethane. Ho nka 3PE e le mohlala, e na le lera la motheo la phofo ea epoxy (ho fana ka ho khomarela ka matla ho phala ea tšepe le khanyetso ea lik'hemik'hale), lera le bohareng la sekhomaretsi (ho kopanya lesela la epoxy le lera le ka ntle la polyethylene), le karolo e ka ntle ea polyethylene (ho hanyetsa tšenyo ea mechine le mahlaseli a UV). Mohaho ona-o sebetsa ka kopanelo ho thibela ho bola ho tsoa mobung le metsing a leoatle, ha o ntse o emelana le tšusumetso ea 'mele ha o patoa kapa o holim'a metsi.
2. The "Protection Logic" of Anti{1}}Anti{1}}Corosion Steel Pipe: Three Elements for Corrosion Prevention
Metal corrosion ha e le hantle ke karabelo ea electrochemical. Ha liphaephe tsa tšepe li kopana le metsi, oksijene le li-electrolyte (tse kang letsoai le mobung), lisele tsa galvanic li etsa hore liathomo tsa tšepe li lahleheloe ke lielektrone ebe li oxidize (ho etsa mafome). Lipeipi tsa tšepe tse thibelang ho bola- li thibela tšebetso ena ka mekhoa e latelang:
Ho itšehla thajana: Liaparo kapa lisebelisoa tsa lesela (tse kang polyethylene kapa ceramic) li arola ka ho feletseng phala ea tšepe sebakeng se senyang, ho thibela ho kopana ka ho toba.
Phaello ea lik'hemik'hale: Liaparo tse ling (tse kang phofo ea epoxy) li sebetsana le bokaholimo ba peipi ea tšepe ho etsa filimi e teteaneng ea passivation, e thibelang phetiso ea elektronike.
Tšireletso ea electrochemical: Theknoloji ea morao-rao ea ts'ireletso ea cathodic (ICCP) (e atisang ho sebelisoa hammoho le liphahlo) e sebelisa mochine o ka morao ho pipe ea tšepe, e e fetola ka cathode, kahoo e thibela ho senyeha ha anode.
Bakeng sa liphaephe tsa oli le khase tse patiloeng, mohlala, seaparo sa 3PE se hanyetsa ho kenella ha mongobo le letsoai ho tloha mobung, ha mokhoa oa tšireletso oa cathodic o fana ka tšireletso e eketsehileng, e liehisa ts'ebetso ea ho senya esita le haeba seaparo se senyehile ka mokhoa o itseng.
3. The Capability Map of Corrosion{1}}Resistant Steel Pipes: Ho Ikamahanya le Maemo a Fapaneng
Litlhoko tsa ts'ireletso ea kutu li fapana haholo maemong a fapaneng a indasteri, e leng se bakang mefuta e mengata ea mefuta e fapaneng ea lipeipi tsa tšepe tse sa jeng tse etselitsoeng ho rarolla mathata a itseng a tikoloho:
Bakeng sa liphaephe tse patiloeng: 3PE kapa litlolo tsa epoxy coal tar lia khethoa. Ea pele e hanyetsana le khatello ea mobu le ho kenella ha metso ea limela, ho etsa hore e tšoanelehe bakeng sa khase ea tlhaho le lipalangoang tsa oli e hloekisitsoeng; ea morao-rao e tlase-chelete le mongobo-e hanana le mongobo, e leng se etsang hore e sebelisoe hangata phepelong ea metsi le marangrang a ho ntša metsi.
Tikoloho ea maoatleng: Ho ba le sehatsetsi se phahameng sa letsoai, mahlaseli a matla a UV, le ho qoelisoa metsing a leoatle, epoxy powder + polyurethane outer sheath kapa titanium nano{1}peipi ea tšepe e koetsoeng e loketse haholoanyane, 'me nako ea bophelo ea ho thibela ho fafatsa letsoai e feta lilemo tse 20.
Ho kgothaletswa-tikoloho e hodimo le-mabaka a kgatello e phahameng: Bakeng sa dinetweke tsa motlakase kapa diphaephe tse sebetsanang le dikhemikhale, dikutu tsa ceramic kapa -mocheso o phahameng wa epoxy coatings (tse kgonang ho mamella thempereichara e fetang 300 degrees ), di a kgothaletswa, tse fanang ka kgatello ya kutu le mocheso o sa senyeheng.
Mecha ea litaba e khethehileng: Ha o tsamaisa litharollo tse nang le asiti le alkaline (joalo ka sulfuric acid le lye), polytetrafluoroethylene (PTFE)-li-lined steel pipe lia hlokahala. Ho se sebetse ha eona hoa lik'hemik'hale ho etsa hore e khone ho mamella hoo e ka bang maro 'ohle a metsi a senyang haholo.
4. Boleng ba Anti{1}}Lipeipi tsa Tšepe tse Thibelang kutu: Tiisetso e Habeli ea Moruo le Polokeho
Melemo ea moruo ea ho sebelisa{0}} lipeipi tsa tšepe tse thibelang kutu li bohlokoa haholo. Liphaephe tse tloaelehileng tsa tšepe li ka 'na tsa hloka ho nkeloa sebaka ka mor'a lilemo tse ling le tse ling tse 3-5 sebakeng se chesang, ha{4}}lipeipi tsa tšepe tsa boleng bo holimo tse thibelang kutu{7}}li ka nka lilemo tse 20-50 (ka mohlala, lipeipi tse thibelang kutu tse 3PE hangata li etselitsoe nako ea lilemo tse 50). Ka mohlala, ho phatloha ha peipi ea khase ea tlhaho ho bakoang ke ho bola le ho lutla ho ka baka tahlehelo ea moruo ea li-yuan tse limilione tse makholo. Leha ho le joalo, matsete a lipeipi tsa tšepe tse thibelang ho bola a etsa feela 5% -15% ea kakaretso ea litšenyehelo tsa lipeipi, leha ho le joalo e ka fokotsa kotsi ea kotsi ka ho feta 90%.
Ho feta moo, liphaephe tse thibelang{0}}corrosion steel li khothalletsa ntlafatso e tala le{1}tlase{1}khabone. Corrosion e fokotsa ts'ebetso ea lipeipi (mohlala, ho lekanya ho eketsa khanyetso), ha kalafo{3}}ea kutu e boloka bokaholimo ba lipeipi bo boreleli, ho fokotsa tahlehelo ea matla. Ho eketsa bophelo ba tšebeletso ho fokotsa tšusumetso ea tikoloho ea liphaephe tsa tšepe tse lahliloeng.
Qetello: "Mohlokomeli ea sa Bonahaleng" ea Sireletsang Bophelo ba Indasteri
Ho tloha sebakeng se seholo sa Bophirimela-marang-rang a East Gas Pipeline ho ea mekhoeng ea phetiso ea lifeme tsa lik'hemik'hale tse lebopong la leoatle, ho tloha lits'ebetsong tsa phepelo ea metsi ka tlas'a lefatše ho isa liphaepheng tsa matla tsa liteishene tsa lipatlisiso tsa polar, lipeipi tse thibelang ho bola ha lipeipi li sireletsa ka khutso polokeho le katleho ea indasteri ea sejoale-joale. Ka tsoelopele ea mahlale a thepa le theknoloji e thibelang-anti-corrosion (joalo ka nts'etsopele ea nano{4}}coatings le ponelopele e bohlale e thibelang{5}}corrosion layers), liphaephe tsa kamoso tse thibelang{6}}tsepe e tla ba bohlale le ho feta, li tšoarelle nako e telele, li tsoelapele ho sebetsa e le motheo o tiileng oa ts'ireletso lekaleng la lefats'e la eneji le meralo.
