Fahimtar Fa'idodin ASTM A139 Karfe Karfe don Bututun Gas na Ƙarƙashin Ƙasa
Gabatarwa:
Idan ana maganar safarar iskar gas, ba za a iya kifaye muhimmancin bututun da ke karkashin kasa ba.Waɗannan bututun suna tabbatar da aminci da ingantaccen isar da wannan muhimmin makamashi ga gidaje, kasuwanci da masana'antu.Don tabbatar da tsayin daka, amintacce da juriya na waɗannan bututu, yin amfani da kayan inganci yana da mahimmanci.Daga cikin zaɓuɓɓuka masu yawa da ake da su,ASTM A139karkace karfe bututu tsaye a matsayin na musamman zabi.A cikin wannan rukunin yanar gizon, za mu nutse cikin fasali da fa'idodin da suka sanya ASTM A139 kayan da aka zaɓa don bututun iskar gas na ƙasa.
Kayan Injiniya
Darasi A | Darasi B | Darasi C | Darasi D | Darasi E | |
Ƙarfin Haɓaka, min, Mpa(KSI) | 330 (48) | 415(60) | 415(60) | 415(60) | 445(66) |
Ƙarfin ɗamara, min, Mpa(KSI) | 205 (30) | 240 (35) | 290(42) | 315 (46) | 360(52) |
Haɗin Sinadari
Abun ciki | Haɗin kai, Max, % | ||||
Darasi A | Darasi B | Darasi C | Darasi D | Darasi E | |
Carbon | 0.25 | 0.26 | 0.28 | 0.30 | 0.30 |
Manganese | 1.00 | 1.00 | 1.20 | 1.30 | 1.40 |
Phosphorus | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
Sulfur | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
Gwajin Hydrostatic
Kowane tsayin bututu za a gwada shi ta hanyar masana'anta zuwa matsa lamba na hydrostatic wanda zai haifar a cikin bangon bututun damuwa na bai kasa da 60% na ƙayyadaddun ƙarfin yawan amfanin ƙasa a cikin ɗaki ba.Za a ƙayyade matsi ta hanyar ma'auni mai zuwa:
P=2St/D
Bambance-bambancen da aka halatta a Nauyi da Girma
Kowane tsayin bututu za a auna shi daban kuma nauyinsa ba zai bambanta fiye da 10% akan ko 5.5% a ƙarƙashin nauyin ka'idarsa ba, ana ƙididdige shi ta amfani da tsayinsa da nauyinsa kowane tsayin raka'a.
Diamita na waje bazai bambanta fiye da ± 1% daga ƙayyadadden diamita na waje ba.
Kaurin bango a kowane wuri kada ya wuce 12.5% ƙarƙashin ƙayyadadden kauri na bango.
Tsawon
Tsawon bazuwar guda ɗaya: 16 zuwa 25ft(4.88 zuwa 7.62m)
Tsawon bazuwar sau biyu: sama da 25ft zuwa 35ft(7.62 zuwa 10.67m)
Tsawon Uniform: halattaccen bambancin ±1in
Ƙarshe
Za a samar da tulin bututu tare da filaye masu kyau, kuma za a cire burbushin da ke iyakar
Lokacin da bututun da aka ƙayyade ya zama bevel ya ƙare, kwana zai zama digiri 30 zuwa 35
ASTM A139: ZaɓinBututun iskar Gas na karkashin kasalayi:
1. Karfi da karko:
ASTM A139karkace karfe bututuan san shi don kyakkyawan ƙarfi da ƙarfin tasiri.Waɗannan halaye suna da mahimmanci ga bututun iskar gas na ƙasa saboda koyaushe suna fuskantar yanayi iri-iri na muhalli da matsi na ƙasa.Tsarin karkace na bututun ƙarfe yana haɓaka amincin tsarinsa, yana ba shi damar jure matsanancin matsin lamba na waje da rage haɗarin ɗigogi ko fashewa.
2. Juriya na lalata:
Bututun da ke karkashin kasa suna da saukin kamuwa da lalacewa ta hanyar ruwa, sinadarai na kasa da sauran abubuwa.ASTM A139 karkace bututun karfe yana magance wannan matsala ta hanyar samar da juriya mai inganci.Wannan ya faru ne saboda rufin da ya ƙunshi zinc, wanda ke ba da kariya ga abubuwa masu lalata, yana tabbatar da tsawon rayuwar bututu da rage buƙatar kulawa akai-akai ko sauyawa.
3. Weldability da versatility:
ASTM A139 karkace karfe bututu yana da kyau kwarai weldability, kyale ga santsi, m gidajen abinci a lokacin shigarwa.Wannan yanayin yana da amfani musamman gabututun iskar gas na karkashin kasa, kamar yadda yake tabbatar da amincin tsarin bututun mai kuma yana rage haɗarin leaks.Bugu da ƙari, haɓakar bututun ƙarfe na karkace yana ba da damar kera shi cikin sauƙi a cikin nau'ikan tsayi da diamita don saduwa da buƙatun aikin daban-daban, don haka yana taimakawa cikin ƙimar farashi da gyare-gyare.
4. Tasirin farashi:
Wani muhimmin fa'ida ta amfani da ASTM A139 karkace bututun ƙarfe don bututun iskar gas na ƙasa shine ingancin sa.Ƙarfin kayan abu, juriya na lalata da sauƙi na shigarwa yana rage kulawa na dogon lokaci da farashin maye gurbin.Bugu da ƙari, girman girman ƙarfinsa-da-nauyi yana rage buƙatar babban tsarin tallafi yayin shigarwa, yana haifar da ajiyar kuɗi gaba ɗaya.
5. La'akari da muhalli:
ASTM A139 Karfe bututu ana kerarre ta ta amfani da hanyoyin da ba su dace da muhalli ba kuma suna bin ƙa'idodin aminci.Abubuwan da ke da juriya na lalata suna taimakawa hana zub da jini, a ƙarshe yana rage tasirin muhalli.Bugu da ƙari, sake yin amfani da ƙarfe ya sa ya zama zaɓi mai dacewa da muhalli, yana ƙara jaddada fa'idodin ɗorewa na amfani da bututun ƙarfe na ASTM A139 karkace don bututun iskar gas na ƙasa.
A ƙarshe:
Zaɓin kayan da suka dace don bututun iskar gas na ƙasa yana da mahimmanci don tabbatar da aminci, inganci da ingantaccen sufuri na wannan tushen makamashi mai mahimmanci.ASTM A139 karkace bututun ƙarfe shine kyakkyawan zaɓi saboda ƙarfinsa, ƙarfinsa, juriya na lalata, weldability, ingancin farashi, da la'akari da muhalli.Kayayyakinsa na musamman sun sa ya zama zaɓi na farko ga injiniyoyi da masu gudanar da ayyuka da ke neman gina bututun iskar gas a ƙarƙashin ƙasa waɗanda za su yi gwajin lokaci.Ta hanyar saka hannun jari a cikin ingantattun kayan kamar ASTM A139 karkace bututun karfe, za mu iya tabbatar da dorewa da amintaccen kayan rarraba iskar gas na tsararraki masu zuwa.