AS 1579 simbi pombiis a butt weld arc welded steel pombi inonyanya kushandiswa kutakura mvura nemvura yetsvina ine dhayamita yekunze ye ≥ 114 mm uye yemapaipi epombi ine rated pressure isingadariki 6.8 MPa.
Mirwi yepombi inhengo dzedenderedzwa dzechimiro dzinofambiswa muvhu uye hadzishandiswe kudzora kumanikidza kwemukati.
Iyo shoma yekunze dhayamita ndeye 114mm, kunyangwe pasina chakananga chinogumira pahukuru hwepombi asi saizi inodiwa inopihwa.
Ichagadzirwa kubva pakaongororwa kana kuumbwa mamakisi esimbi inopisa yakakungurutswa inoenderana neAS/NZS 1594 kana AS/NZS 3678.
Zvichienderana nekushandiswa kwekupedzisira, ichiri kukamurwa sezvinotevera:
Hydrostatic tested pombiichagadzirwa kubva pakuongorora kana giredhi remhando yesimbi inopisa yakakungurutswa inoenderana neAS/NZS 1594 kana AS/NZS 3678.
Mirwi uye isiri-hydrostatically yakaedzwa pombiichagadzirwa kubva mugiredhi resimbi rinoenderana neAS/NZS 1594 kana AS/NZS 3678.
Neimwe nzira,mirwiinogona kugadzirwa kubva mugiredhi rekuongorora rinoenderana neAS/NZS 1594., panguva iyi simbi ichaongororwa nemuchina zvinoenderana neAS 1391 kuratidza kuti inosangana nezvinodiwa zvekusimba zvinotsanangurwa nemutengi.
AS 1579 simbi pombi inogadzirwa uchishandisaarc welding.
Welds ese achapinzwa zvizere butt welds.
Arc welding inoshandisa kupisa kwearc yemagetsi kunyungudutsa zvinhu zvesimbi uye kugadzira chibatanidza chakasungwa pakati pesimbi kugadzira chinoramba chiripombi yesimbi.
Iyo inowanzoshandiswa arc welding kugadzira maitiro ndeye SAW (Submerged Arc Welding), inozivikanwawo seDSAW, iyo inogona kuiswa muzvikamuLSAW(SAWL) uye SSAW (HSAW) maererano negwara rebutt weld.
Pamusoro peSAW, kune dzimwe mhando dzearc welding dzakadai seGMAW, GTAW, FCAW, uye SMAW.Mhando dzakasiyana-siyana dzearc welding dzine hunhu hwadzo uye mamiriro ekushandisa, uye kusarudzwa kweiyo nzira yewelding yakakodzera kunoenderana nekutsanangurwa kwepombi yesimbi ichagadzirwa, bhajeti, uye zvinodiwa zvemhando.
Iwo mayero pachawo haatsanangure zvakananga kuumbwa kwemakemikari uye zvivakwa zvemuchina, sezvo izvi zvichiwanzoenderana nemhando yesimbi yakadai seAS/NZS 1594 kana AS/NZS 3678, iyo inodonongodza kemikari nemakanika zvivakwa zvesimbi inoshandiswa kugadzira izvi. machubhu.
AS 1579 inotsanangura chete iyo kabhoni yakaenzana.
Iyo kabhoni yakaenzana (CE) yesimbi haifaniri kudarika 0.40.
CE=Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15
CE ndiyo yakakosha parameter inoshandiswa kuongorora weldability yesimbi.Inobatsira kufanotaura kuoma kunogona kuitika musimbi mushure mekuputika uye nokudaro kuongorora weldability yayo.
Hydrostatic pressure test inodiwa kune yega yega mvura kana tsvina yesimbi pombi inoshandiswa pakufambisa.
Mapombi epombi kazhinji haafanirwe kuongororwa hydrostatically nekuti anonyanya kushandiswa kutakura mitoro yezvimiro pane kumanikidzwa kwemukati.
Kuedza Misimboti
Iyo pombi yakavharwa kumagumo ega ega uye inomanikidzwa hydrostatically.
Inotariswa simba pakumanikidzwa kunomiririra kudzvanywa kwekugadzira kwepombi.Iyo inoedzwa kuti inodonhedza kuvharika pachiyero chakadzvanywa chepombi.
Madzvinyiriro Ekuedza
Iyo yakanyanya kuomeswa kudzvanywa kwepombi yesimbi ndeye 6.8 MPa.Ichi chikwiriso chinotaridzirwa nechiyero chekumanikidza bvunzo michina ye8.5 MPa.
Pr= 0.72×(2×SMYS×t)/OD kana Pr= 0.72×(2×NMYS×t)/OD
Pr: Rated pressure, muMPa;
SMYS: Yakatarwa shoma goho simba, muMPa;
NMYS: Nominal shoma goho simba, muMPa;
t: Ukobvu hwemadziro, mumm;
OD: Kunze kwedhayamita, mumm.
Mumamiriro ezvinhu ekukurumidzira, kudzvinyirirwa kwenguva pfupi kunogona kukonzera kuwedzera kwekunetseka kwepombi.Pasi pemamiriro aya, iyo yakanyanya kubvumidzwa yakasanganiswa kushushikana ichatemwa nemugadziri, asi haipfuure 0.90 x SMYS.
Pt= 1.25Pr
Mushure mekuedzwa kwesimba, hapazove nekutsemuka kana kubuda mupombi yekuyedza.
Chikamu che90% chezvakatarwa zvesimba regoho repasi (SMYS) kana simba rezita rekushomeka kwegoho (NMYS) kana 8.5 MPa, chero ishoma.
Pl= Pr
Muedzo wekudonha uchaitwa papombi.
Pakuyedzwa kwekuvuza, hapazove nekudonha kunoonekwa pane pombi.
Mapombi ese asiri-hydrostatic ekuyedza anofanirwa kuve neukobvu hwemadziro husingasviki 8.0 mm.
Pombiichave iine 100% yemawelds ayo asina-kukuvadza akaedzwa neultrasonic kana radiographic nzira zvinoenderana AS 1554.1 Chikamu SP uye zvinoenderana neyakatsanangurwa yekugamuchira maitiro.
Kuedza kusingaparadzi kwechikamu chemurwi weldszvemapombi mirwi.Mhedzisiro yebvunzo ichaenderana neAS/NZS 1554.1 Kirasi SP zvinodiwa.Kana ongororo yakaratidza kusatevedzera marekodhi, iyo weld yese pamurwi wepombi ichaongororwa.
Mapombi uye mafittings anoshandiswa pakufambisa mvura netsvina achadzivirirwa kubva mukuora nekusarudzwa kwejasi rakakodzera Kupfeka kuchaiswa zvinoenderana neAS 1281 uye AS 4321.
Panyaya yemvura inonwiwa, vanofanirwa kutevedzera AS/NZS 4020. Chinangwa ndechekuona kuti zvigadzirwa izvi, kana zvasangana nehurongwa hwekupa mvura, hazvikanganisi kunaka kwemvura, sekusvibiswa kwemakemikari, microbiological. kusvibiswa, kana kuchinjwa kwekuravira nekuonekwa kwemvura.
Iyo yekunze pamusoro pechubhu, isingasviki 150 mm kubva kumagumo, ichave yakajeka uye nekusingaperi yakanyorwa neruzivo rwunotevera:
a) Yakasarudzika serial nhamba, kureva nhamba yechubhu;
b) Nzvimbo yekugadzira;
c) Kunze dhayamita uye madziro ukobvu;
d) Nhamba yakajairika, kureva AS 1579;
e) Zita remugadziri kana mucherechedzo;
f) Hydrostatic test pombi kudzvanywa rating (chete yesimbi pombi inoiswa kune hydrostatic kuyedzwa);
g) Isiri-inoparadza yekumaka yekumaka (NDT) (chete yepombi yesimbi iyo yakamboedzwa isingaparadze).
Mugadziri achapa Mutengi chitupa chakasainwa chinotaura kuti pombi yakagadzirwa zvinoenderana nezvinodiwa neMutengi uye iyi Standard.
ASTM A252: Yakagadzirirwa simbi yepombi mirwi uye ine yakadzama michini yezvivakwa uye kemikari kuumbwa kwemaitiro emakirasi matatu ekuita.
EN 10219: inoenderana neinotonhora-yakaumbwa welded structural simbi machubhu ezvimiro zvekushandisa zvinosanganisira mirwi yepombi.
ISO 3183: Simbi mutsetse pombi nokuda oiri uye gasi indasitiri, ine unhu uye simba zvinodiwa zvinoita kuti uyewo akakodzera kutakura pombi mirwi.
API 5L: Inonyanya kushandiswa pakufambisa mapaipi muindasitiri yemafuta uye gasi, iyo yepamusoro-yemhando miitiro inoitawo kuti ive yakakodzera kugadzira mirwi iri pasi pemitoro yakakwira.
CSA Z245.1: Inotsanangura mapaipi esimbi uye zvigadziro zvekutakura kwemafuta uye gasi, izvo zvakakodzerawo kumapuranga epombi.
ASTM A690: Yakagadzirirwa simbi yepombi mirwi inoshandiswa mugungwa uye yakafanana nharaunda, ichisimbisa kushora kuramba.
JIS A 5525: ChiJapan chakajairwa chinovhara simbi pombi yemapombi mirwi, kusanganisira zvinhu, kugadzirwa, dimensional uye kuita zvinodiwa.
GOST 10704-91: Magetsi akakwenenzverwa akatwasuka musono simbi pombi kuti ishandiswe mukuvaka uye mainjiniya zvimiro, kusanganisira pombi mirwi.
GOST 20295-85: Tsanangudzo yemagetsi emagetsi welded simbi mapaipi ekufambisa kwemafuta uye gasi, kuratidza kushanda kwavo pasi pekudzvinyirirwa kwakanyanya uye munzvimbo dzakaoma, dzinoshanda kune mapaipi epombi.
Kubva payakavambwa muna 2014, Botop Steel yave mutengesi anotungamira wekabhoni simbi pombi kuChamhembe kweChina, inozivikanwa nebasa repamusoro, zvigadzirwa zvemhando yepamusoro, uye mhinduro dzakakwana.
Iyo kambani inopa dzakasiyana siyana dzekabhoni simbi mapaipi uye zvigadzirwa zvine hukama, zvinosanganisira isina musono, ERW, LSAW, uye SSAW simbi pombi, pamwe neyakakwana mutsara wepombi fittings uye flanges.
Zvigadzirwa zvayo zvehunyanzvi zvinosanganisira alloys epamusoro-giredhi uye austenitic simbi isina tsvina, yakagadzirirwa kusangana nezvinodiwa zveakasiyana mapurojekiti epombi.
