Ntawm cov "tsheb" uas yuav tsum tau txav mus rau ib yam khoom, ib qho ntawm feem ntau yog cov kav dej.Lub raj xa dej muab cov nqi qis thiab kev thauj mus los tas li ntawm cov pa roj thiab kua.Niaj hnub no, muaj ntau hom kav dej.Cov qauv tsim sib txawv hauv qhov ntsuas, txoj kab uas hla, siab, thiab ua haujlwm kub.
Lub ntsiab, kev siv hluav taws xob-network, thev naus laus zis, nkoj (machine) cov kav dej sib txawv hauv qhov ntsuas.Cia peb saib ze dua ntawm lub hom phiaj thiab pawg ntawm cov kav dej loj thiab thev naus laus zis.
Lub cevcov kav dej.Kev teem caij thiab qeb
Cov kav dej hauv lub cev yog cov txheej txheem kev ua haujlwm nyuaj, uas muaj cov kav dej ntau-kilometer fila, chaw nres tsheb roj lossis roj, hla dej los yog txoj kev.Cov kav dej hauv lub cev thauj cov roj thiab cov khoom siv roj av, cov roj liquefied hydrocarbon gas, roj roj, roj pib, thiab lwm yam.
Tag nrho cov kav dej loj tsuas yog tsim los ntawm kev siv tshuab vuam.Ntawd yog, ntawm qhov chaw ntawm cov yeeb nkab tseem ceeb koj tuaj yeem pom ib qho kauv los yog ib txoj hlua ncaj nraim.Raws li cov khoom siv rau kev tsim cov kav dej, steel yog siv, vim nws yog ib qho kev lag luam, ruaj khov, ua kom zoo thiab txhim khu kev qha.Tsis tas li ntawd, nws tuaj yeem ua "classic" steel qauv nrog cov khoom siv kho tshuab, cov pa roj carbon tsawg lossis carbonic los ua cov khoom zoo tib yam.
Classification ntawm mainline pipelines
Raws li kev ua haujlwm siab hauv cov kav dej, cov kav dej loj tau muab faib ua ob chav kawm:
Kuv - ntawm kev ua haujlwm siab tshaj 2.5 txog 10.0 MPA (tshaj 25 txog 100 kgs / cm2) suav nrog;
II - ntawm kev ua haujlwm siab tshaj 1.2 txog 2.5 MP (tshaj 12 txog 25 kgs / cm2) suav nrog.
Nyob ntawm txoj kab uas hla ntawm lub raj xa dej tau faib rau plaub chav kawm, mm:
Kuv - nrog cov pa kab uas hla ntau tshaj 1000 txog 1200 suav nrog;
II - tib yam, tshaj 500 txog 1000 suav nrog;
III yog tib yam.
IV - 300 los yog tsawg dua.
Tshuab raj.Kev teem caij thiab qeb
Cov kav dej thev naus laus zis yog cov cuab yeej siv rau kev muab cov roj, dej, cov khoom siv raw, cov khoom lag luam ib nrab thiab ntau yam khoom siv hauv kev tsim khoom hauv kev lag luam.Xws li cov kav dej thauj siv cov khoom siv raw thiab ntau yam pov tseg.
Kev faib tawm ntawm cov kav dej thev naus laus zis yuav siv qhov chaw ntawm cov yam ntxwv xws li:
Qhov chaw:inter-purpose, intra-qeb.
Txoj kev tso:saum av, av, underground.
Internal siab:tsis muaj siab (tus kheej-ute), lub tshuab nqus tsev, tsis tshua muaj siab, nruab nrab siab, siab siab.
Kub ntawm cov khoom thauj:cryogenic, txias, ib txwm, sov, kub, overheated.
Aggressiveness ntawm cov khoom thauj:non-aggressive, qaug zog-aggressive (me-aggressive), nruab nrab-aggressive, aggressive.
Khoom siv thauj khoom:steam pipelines,cov kav dej, cov kav dej,gas pipelines, oxygen pipelines, roj pipelines, acetyleno xov hlau, roj pipelines, gas pipelines, acid pipelines, alkaline pipelines, ammonia pipelines, thiab lwm yam.
Khoom siv:steel, steel nrog txheej sab hauv lossis sab nraud, los ntawm cov hlau tsis muaj hlau, cam khwb cia hlau, los ntawm cov khoom tsis yog hlau.
Kev sib txuas:inseparable, connector.
Post lub sij hawm: Sep-01-2022