1. Ukwakhiwa kwamapayipi e-nitrogen kufanele kulandele imininingwane
"Ukucaciswa kobunjiniyela bepayipi lensimbi yezimboni kanye nokwamukelwa"
"Ukucaciswa kwesakhiwo sesiteshi se-oxygen"
"Imithethonqubo yokulawulwa kokuphepha kanye nokuphathwa kwamapayipi okucindezela"
"Izicaciso zokunciphisa ubunjiniyela nokwamukelwa"
"Ukucaciswa kokwakhiwa nokwamukelwa kobunjiniyela bokushisela bemishini yasensimini namapayipi ezimboni"
2. Izidingo zamapayipi nezinye izinsimbi
2.1 Wonke amapayipi, izifakelo zamapayipi, namavalvu kumele abe nezitifiketi zangaphambili zefekthri.Uma kungenjalo, hlola izinto ezingekho futhi izinkomba zazo kufanele zihlangabezane nezindinganiso zamanje zikazwelonke noma zongqongqoshe.
2. 2 Wonke amapayipi kanye nezinsiza kufanele zihlolwe ngokubonakalayo, njengokuthi akukho yini ukukhubazeka okufana nokuqhekeka, izimbobo ezinciphayo, izimbotshana ze-slag kanye nesikhumba esinzima ukuze kuqinisekiswe ukuthi ingaphezulu libushelelezi futhi lihlanzekile;ama-valve, izivivinyo zamandla kanye nokuqina kufanele kwenziwe ngamunye ngamunye (ukucindezela kokuhlola ukucindezela okuzisholo 1.5 Isikhathi sokubamba ingcindezi asikho ngaphansi kwemizuzu emi-5);i-valve yokuphepha kufanele ilungiswe izikhathi ezingaphezu kwezingu-3 ngokuvumelana nemithetho yokuklama.
3. Ukushisela amapayipi
3.1 Ngaphezu kokuhlangabezana nezidingo zemidwebo, izimo zobuchwepheshe be-welding kufanele zenziwe ngokuhambisana nemithetho yamazwe ngamazwe.
3.2 Amashisela kufanele ahlolwe nge-radiographic noma nge-ultrasonic ngokuhambisana nenani elishiwo kanye nezinga lekhwalithi.
3.3 Amapayipi ensimbi ye-carbon ashiselwe kufanele asekelwe nge-argon arc.
4. Ukususwa kwepayipi nokugqwala
Sebenzisa i-sandblasting ne- pickling ukuze ususe ukugqwala futhi unciphise udonga lwangaphakathi lwepayipi.
5. Izinyathelo zokuqapha ukufakwa kwamapayipi
5.1 Uma ipayipi lixhunyiwe, akumele lifaniswe ngamandla.
5.2 Hlola ubuqotho besixhumi sezinqe zenozzle.Linganisa imbobo ebangeni elingu-200mm.Ukuchezuka okuvunyelwe ngu-1mm/m, ukuchezuka kobude obuphelele kungaphansi kuka-10mm, futhi ukuxhumana phakathi kwama-flange kufanele kuhambisane.
5.3.Sebenzisa izixhumi ezinentambo ukuze usebenzise i-PTFE ngokupakisha, futhi akuvunyelwe ukusebenzisa uwoyela wesesame.
5.4.Ipayipi kanye nokwesekwa kufanele kuhlukaniswe nge-non-chloride ion plastic sheet;ipayipi odongeni kufanele libe nemikhono, futhi ubude bomkhono akufanele bube ngaphansi kobukhulu bodonga, futhi igebe kufanele ligcwaliswe ngezinto ezingashi.
5.5.Ipayipi le-nitrogen kufanele libe nesivikelo sombani kanye nemishini yokukhipha i-electrostatic discharge.
5.6.Ukujula kwepayipi eligqitshiwe akukhona ngaphansi kuka-0.7m (indawo ephezulu yepayipi ingaphezu komhlaba), futhi ipayipi eligqitshiwe kufanele liphathwe nge-anticorrosion.
6. Ukuhlolwa kwengcindezi yepayipi kanye nokuhlanza
Ngemuva kokufakwa kwepayipi, yenza ukuhlolwa kwamandla nokuqina, futhi imithethonqubo imi kanje:
| Ingcindezi yokusebenza | Amandla Test | Ukuvuza Test | ||
| I-MPa | ||||
| Imidiya | Ingcindezi (MPa) | Imidiya | ingcindezi (MPa) | |
| <0.1 | Umoya | 0.1 | Umoya noma i-N2 | 1 |
| ≤3 | umoya | 1.15 | Umoya noma i-N2 | 1 |
| amanzi | 1.25 | |||
| ≤10 | amanzi | 1.25 | Umoya noma i-N2 | 1 |
| 15 | amanzi | 1.15 | Umoya noma i-N2 | 1 |
Qaphela:
①Umoya ne-nitrogen kufanele kome futhi kungabi nowoyela;
②Amanzi ahlanzekile angenawo uwoyela, okuqukethwe kwe-ion chloride emanzini akudluli ku-2.5g/m3;
③Zonke izivivinyo zengcindezi yokuqina kufanele zenziwe kancane kancane isinyathelo ngesinyathelo.Uma ikhuphukela ku-5%, kufanele ihlolwe.Uma kungekho ukuvuza noma into engavamile, ingcindezi kufanele inyuswe isinyathelo ngesinyathelo ngengcindezi engu-10%, futhi ukuqiniswa kwe-voltage yesinyathelo ngasinye akufanele kube ngaphansi kwemizuzu engu-3.Ngemuva kokufinyelela ukucindezela, kufanele kugcinwe imizuzu emi-5, futhi ifaneleka uma kungekho deformation.
④ Ukuhlolwa kokuqina kuzohlala amahora angu-24 ngemva kokufinyelela ingcindezi, futhi isilinganiso sokuvuza kwehora ngalinye lamapayipi angaphakathi nemisele kufanele sibe ngu-≤0.5% njengokufanelekile.
⑤Ngemva kokuphumelela ukuhlolwa kokuqina, sebenzisa umoya owomile ongenawo uwoyela noma i-nitrogen ukuze uhlanze, ngesilinganiso sokugeleza esingekho ngaphansi kuka-20m/s, kuze kube yilapho kungabikho ukugqwala, i-welding slag kanye nezinye izibi epayipini.
7. Ukudweba kwepayipi nomsebenzi ngaphambi kokukhiqiza:
7.1.Ukugqwala, i-welding slag, i-burr nokunye ukungcola endaweni ependiwe kufanele kususwe ngaphambi kokudweba.
7.2.Faka esikhundleni nge-nitrogen ngaphambi kokukhiqiza kuze kube yilapho ubumsulwa bufanelekile.
Isikhathi sokuthumela: Jun-25-2021