1. I-Nitrogen Pipeline Ukwakhiwa kufanele ilandele imininingwane
"Ukucaciswa kwe-Industrial Metal Pipeline Engineering nokwamukelwa"
"I-OXYGEN STATT STAMS Design Sokucaciswa"
"Imithethonqubo ekuphathweni kokuphepha kanye nokubhekwa kwamapayipi okucindezela"
"Ukucaciswa kobunjiniyela nokwamukelwa okubizayo"
"Ukucaciswa kokwakhiwa nokwamukelwa kobunjiniyela be-welding kwemishini yensimu namapayipi ezimboni"
2. Izidingo zePipeline nezesekeli
2.1 Onke amapayipi, ukufakwa kwamapayipi, nama-valves kumele abe nezitifiketi zefektri zakudala. Ngaphandle kwalokho, hlola izinto ezilahlekile nezinkomba zazo kufanele zihlangabezane namazinga wamanje kazwelonke noma okhonzayo.
2. 2 Wonke amapayipi nezinye izinsimbi kufanele ahlolwe ngokubona, njengokuthi kukhona amaphutha afana nemifantu, izimbobo ezibucayi, ukufakwa kwesikhumba esindayo kanye nesikhumba esindayo ukuqinisekisa ukuthi ingaphezulu libushelelezi futhi lihlanzekile; Okwama-valves, amandla okuqina kwamandla kufanele kwenziwe ngakunye (ingcindezi yokuhlola yingcindezi yokuqothuka 1.5 Isikhathi sokubamba ingcindezi asikho ngaphansi kwemizuzu engu-5); I-valve yezokuphepha kufanele ihlanza amahlandla angaphezu kwama-3 ngokusho kwemithetho ye-Design.
3. I-Pipe Welding
3.1 Ngaphezu kokuhlangabezana nezidingo zemidwebo, izimo zobuchwepheshe be-welding kufanele zenziwe ngokuya ngemigomo yamanye amazwe.
3.2 Ama-welds kufanele ahlolwe yi-radiographic noma i-ultrasonic ngokuya ngenani elicacisiwe kanye nekhwalithi yekhwalithi.
3.3 Amapayipi e-carbon e-carbon kufanele axhaswe nge-argon arc.
4. Ipayipi elidonsela ukukhishwa nokugqwala
Sebenzisa i-sandblasting futhi ubheke ukuze ususe ukugqwala bese ulungisa udonga olungaphakathi lwepayipi.
I-5. Izinyathelo zokufakwa kwepayipi
5.1 Lapho ipayipi lixhunyiwe, akumele lifaniswe ngamandla.
5.2 Bheka ukuqondisisa kwesixhumi se-butt se-nozzle. Kala imbobo ebangeni le-200mm. Ukuphambuka okuvumelekile yi-1mm / m, ukuphambuka kobude bungaphansi kwe-10mm, futhi ukuxhumana phakathi kwama-flangese kufanele kube ngokufana.
5.3. Sebenzisa izixhumi ezihlanganisiwe ukufaka i-PTFE ngokupakisha, futhi kwenqatshelwe ukusebenzisa i-Sesame Amafutha.
5.4. Ipayipi kanye nokusekelwa kufanele kuhlukaniswe yishidi leplastiki le-ion elingewona ne-chloride; Ipayipi odongeni kufanele linemikhono, futhi ubude bomkhono kufanele bungabi ngaphansi kosayizi wodonga, futhi igebe kufanele ligcwaliswe ngezinto ezingavuselelwanga.
5.5. I-nitrogen pipeline kufanele ibe nokuvikelwa kombani kanye namadivayisi wokukhipha ama-electrostatic.
5.6. Ukujula kwepayipi elingcwatshwe kungaphansi kuka-0.7m (phezulu kwepayipi kungaphezulu komhlaba), futhi ipayipi elingcwatshwe ngentambo kufanele liphathwe nge-anticorrosion.
6. Ukuhlolwa kwengcindezelo yepayipi kanye nokuhlanza
Ngemuva kokuthi ipayipi lifakiwe, yenza izivivinyo namandla okuqina, futhi imithethonqubo imi ngalendlela elandelayo:
| Ingcindezi Yomsebenzi | Ukuhlolwa kwamandla | Ukuhlolwa okuvuzayo | ||
| I-MPA | ||||
| Okokuhambisa | Ingcindezi (MPA) | Okokuhambisa | Ingcindezi (MPA) | |
| <0.1 | Umoya | 0.1 | Umoya noma n2 | 1 |
| ≤3 | umoya | 1.15 | Umoya noma n2 | 1 |
| nisela | I-1.25 | |||
| ≤10 | nisela | I-1.25 | Umoya noma n2 | 1 |
| 15 | nisela | 1.15 | Umoya noma n2 | 1 |
Qaphela:
I-①air ne-nitrogen kufanele kube yomile futhi imahhala;
Amanzi ahlanzekile angenama-②Oil, okuqukethwe kwe-chloride ion kwamanzi akweqisi-2g / m3;
I-③Lall Test Test Tests kufanele yenziwe kancane igxathu negxathu. Lapho ikhuphuka ibe ngo-5%, kufanele ihlolwe. Uma kungekho ukuvuza noma into engajwayelekile, ingcindezi kufanele inyuswe igxathu negxathu nge-10% ingcindezi, kanye nokuzinza kwamandla kagesi kwesinyathelo ngasinye akufanele kube ngaphansi kwemizuzu engu-3. Ngemuva kokufinyelela ingcindezi, kufanele igcinwe imizuzu emi-5, futhi iyakufaneleka lapho kungekho deformation.
④ Ukuhlolwa kokuqina kuzohlala amahora angama-24 ngemuva kokufinyelela ingcindezi, kanye nesilinganiso esimaphakathi sokuvuza samapayipi angaphakathi endlini kanye nomsele kufanele kube ≤0.5% njengoba kufanelekile.
⑤BAFER UKUVELA INVIVINYO YOKUGCINA, sebenzisa umoya owomile kawoyela noma i-nitrogen ukuze uhlanze, ngesilinganiso sokugeleza esingaphansi kwama-20m / s, kungakabikho ukugqwala, i-slag ye-welding kanye nokunye imfucumfucu epayipini.
7. Umdwebo wepayipi futhi usebenze ngaphambi kokukhiqizwa:
7.1. Ukugqwala, i-welding slag, i-burr nokunye ukungcola komhlaba opende kufanele kususwe ngaphambi kokupenda.
7.2. Buyisela nge-nitrogen ngaphambi kokukhiqiza kuze kube yilapho ubumsulwa bufanelekile.
Isikhathi sePosi: Jun-25-2021