Txheej txheem cej luam ntawm cov khoom nyob rau hauv Natural Gas Pipeline Systems
Natural gas piping systems yog tsim los thauj cov pa roj kom nyab xeeb thiab ua haujlwm tau zoo nyob rau qhov ntev thiab dhau ntawm ib puag ncig nyuaj. Kev xaiv cov khoom siv yeeb nkab yog qhov kev txiav txim siab engineering tseem ceeb uas cuam tshuam ncaj qha rau kev nyab xeeb, kav ntev, thiab tus nqi -kev ua tau zoo. Cov ntaub ntawv sib txawv yog siv nyob ntawm qib siab, kev teeb tsa kev teeb tsa, thiab cov kev cai tswj hwm. Ntawm cov no, cov pa roj carbon steel tseem yog qhov kev xaiv tseem ceeb rau kev xa cov kav dej, thaum polyethylene thiab lwm yam khoom siv dav siv hauv kev faib khoom. Cov neeg tsim khoom xws li Hebei Huayang Steel Pipe Co., Ltd. tsom mus rau kev tsim cov siab -cov kav hlau zoo uas ua tau raws li cov qauv thoob ntiaj teb rau kev siv roj thiab roj.
| Hom khoom | Cov Standards | Siab Ntau | Daim ntawv thov |
|---|---|---|---|
| Carbon Steel | API 5L, ASTM A106 | Siab siab | Ntev - kis tau tus mob |
| Polyethylene PE | TS EN ISO 4437 Cov | Tsawg mus rau nruab nrab siab | Kev faib tawm hauv nroog |
| Stainless hlau | ASTM A 312 Cov Lus Qhia Tshwj Xeeb | Nruab nrab siab | Corrosive ib puag ncig |
| Hlau Hlau | TS EN 545 | Nruab nrab siab | Municipal pipelines |
| Tooj | ASTM B88 | Tsawg siab | Cov pa hauv tsev |
Cov pa roj carbon hlau yog cov khoom siv tseem ceeb rau cov kav xa dej
Cov pa roj carbon steel yog cov khoom siv dav tshaj plaws rau cov kav dej xa hluav taws xob vim nws lub zog siab, ua haujlwm ntev, thiab cov nqi ua haujlwm. Cov kav dej uas tsim nyob rau hauv cov qauv xws li API 5L muaj nyob rau hauv cov qib xws li X42 txog X80, txhua qhov muab cov qib sib txawv ntawm cov khoom muaj zog thiab tawv. Cov khoom no ua rau cov kav dej carbon steel tiv taus siab sab hauv thiab cov khoom siv sab nraud, ua rau lawv tsim nyog rau kev hla -lub teb chaws thiab cov chaw xa hluav taws xob sab nraud.
Ntxiv nrog rau lub zog, carbon steel muaj qhov zoo weldability, uas yog qhov tseem ceeb rau kev tsim cov kav dej. Vuam tso cai rau cov kav dej txuas ntxiv nrog kev pheej hmoo tsawg heev. Txhawm rau txhim kho kev ua tau zoo, cov kav dej carbon steel feem ntau ua ke nrog cov txheej txheem sab nraud xws li 3LPE thiab sab hauv los tiv thaiv- cov kab mob corrosion. Cov kev tiv thaiv no txuas ntxiv kev pab cuam lub neej thiab txhim kho kev tiv thaiv ib puag ncig xws li av corrosion thiab ya raws.
Polyethylene Pipes nyob rau hauv Distribution Networks
Polyethylene PE kav yog dav siv nyob rau hauv lub nroog gas faib systems vim lawv yooj, corrosion kuj, thiab yooj yim ntawm installation. Tsis zoo li cov kav hlau, PE kav tsis tas yuav muaj kev tiv thaiv corrosion ntxiv, vim tias lawv muaj peev xwm tiv taus tshuaj lom neeg thiab ib puag ncig kev puas tsuaj. Qhov no ua rau lawv tshwj xeeb tshaj yog haum rau kev teeb tsa hauv av hauv nroog ib puag ncig.
PE kav feem ntau yog siv hauv qis - mus rau nruab nrab - kev siv siab, vim tias lawv lub zog siv zog qis dua cov hlau. Txawm li cas los xij, lawv qhov yooj yim tso cai rau lawv nqus av txav thiab txo qhov kev pheej hmoo ntawm kev xau. Tsis tas li ntawd, lawv qhov hnyav hnyav ua kom yooj yim rau kev thauj mus los thiab kev teeb tsa, txo cov nqi tag nrho. Raws li qhov tshwm sim, PE kav dej tau dhau los ua tus qauv kev xaiv rau lub nroog roj network thiab cov khoom siv roj hauv tsev.
Stainless hlau thiab kev siv tshwj xeeb
Stainless hlau kav yog siv nyob rau hauv tej yam ntuj tso daim ntaub ntawv uas muaj corrosion kuj yog ib qho tseem ceeb kev txhawj xeeb. Cov chaw no tej zaum yuav muaj xws li offshore platforms, chemical processing plants, los yog cov chaw uas muaj cov av noo siab thiab aggressive chemical raug. Stainless hlau muaj chromium, uas tsim ib tug passive oxide txheej ntawm qhov chaw, muab zoo heev tiv thaiv corrosion.
Txawm hais tias cov hlau tsis muaj steel muaj qhov ua tau zoo dua, nws cov nqi siab dua txwv nws txoj kev siv rau cov ntawv tshwj xeeb es tsis yog loj - cov kav xa dej loj. Feem ntau, carbon steel nrog cov txheej txheem tiv thaiv tsim nyog muab cov kev daws teeb meem zoo dua thaum tseem ua tau raws li qhov yuav tsum tau ua.
Mechanical thiab Performance Requirements ntawm cov ntaub ntawv
Cov ntaub ntawv siv hauv cov kav dej ntuj yuav tsum ua kom tau raws li cov txheej txheem nruj thiab kev ua haujlwm kom ntseeg tau tias muaj kev nyab xeeb. Cov khoom tseem ceeb muaj xws li lub zog tawm los, lub zog tensile, toughness, thiab tsis kam mus tawg propagation. Cov khoom no tseem ceeb tshwj xeeb tshaj yog nyob rau hauv siab - cov kav xa hluav taws xob siab, qhov uas tsis ua haujlwm tuaj yeem ua rau muaj qhov tshwm sim loj.
Ntxiv nrog rau cov khoom siv dag zog, cov ntaub ntawv yuav tsum muaj kev tiv thaiv zoo rau ib puag ncig xws li corrosion, kub hloov pauv, thiab av kev ntxhov siab. Rau cov kav hlau steel, qhov no feem ntau yog ua ke ntawm kev xaiv cov khoom siv thiab kev tiv thaiv. Rau cov kav dej yas xws li PE, cov khoom tsim thiab kev tsim khoom zoo ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab ua haujlwm.
| Khoom | Carbon Steel | Polyethylene | Stainless hlau |
|---|---|---|---|
| Lub zog | Siab | Nruab nrab | Siab |
| Corrosion Resistance | Nruab nrab nrog txheej | Zoo heev | Zoo heev |
| Yooj yim | Tsawg | Siab | Nruab nrab |
| Kub Resistance | Siab | Nruab nrab | Siab |
| Nqi | Nruab nrab | Tsawg | Siab |
Kev xaiv cov khoom siv raws li kev thov
Kev xaiv cov khoom siv rau cov kav dej ntuj yog nyob ntawm ntau yam, nrog rau qib siab, ib puag ncig, kev teeb tsa, thiab kev txwv nyiaj txiag. Rau siab -siab, ntev- cov kav dej nyob deb, carbon steel yog cov khoom siv vim nws lub zog zoo dua thiab kev ntseeg siab. Nyob rau hauv sib piv, rau lub nroog faib systems uas yooj yooj yim thiab corrosion kuj tseem ceeb dua, polyethylene kav feem ntau xaiv.
Nyob rau hauv ib puag ncig uas muaj kev pheej hmoo corrosion siab lossis kev ua haujlwm tshwj xeeb, stainless hlau lossis lwm yam khoom tshwj xeeb yuav raug siv. Cov kws ua choj yuav tsum ua tib zoo soj ntsuam cov xwm txheej no los xaiv cov khoom tsim nyog tshaj plaws rau txhua ntu ntawm cov kav dej. Qhov no ua kom pom kev ua tau zoo thaum txo qis kev pheej hmoo thiab cov nqi.
Xaus
Natural gas piping systems cia siab rau ntau yam khoom siv, txhua tus xaiv raws li kev thov tshwj xeeb. Cov pa roj carbon steel dominates hauv cov kav xa hluav taws xob vim nws lub zog thiab tus nqi -kev ua tau zoo, thaum polyethylene tau siv dav hauv kev faib khoom sib txuas rau nws qhov yooj yim thiab corrosion kuj. Stainless hlau thiab lwm yam khoom siv ua haujlwm tshwj xeeb hauv qhov chaw nyuaj.
Kev nkag siab txog cov yam ntxwv thiab kev txwv ntawm txhua yam khoom siv yog qhov tseem ceeb rau kev tsim cov kav dej nyab xeeb thiab ua tau zoo. Los ntawm kev sib txuas cov kev xaiv cov khoom tsim nyog nrog kev tsim khoom thiab kev tiv thaiv thev naus laus zis, nws muaj peev xwm ua tiav kev ntseeg tau ntev - lub sijhawm ua haujlwm hauv kev thauj mus los ntawm cov pa roj.
