Kunzwisisa Mabhenefiti eASTM A139 Spiral Steel Pipe yePaipi dzeGasi rePasi pevhu
Suma:
Kana zvasvika pakufambisa gasi rechisikigo, kukosha kwemapaipi epasi pevhu hakufanirwe kupfuudzwa zvakanyanya. Mapaipi aya anovimbisa kuendeswa kwesimba iri rinokosha kudzimba, mabhizinesi nemaindasitiri kwakachengeteka uye nemazvo. Kuti pave nechokwadi chekuti mapaipi aya anogara kwenguva refu, akavimbika uye akasimba, kushandiswa kwezvinhu zvemhando yepamusoro kwakakosha. Pakati pesarudzo dzakawanda dziripo,ASTM A139Pombi yesimbi inotenderera inoonekwa sesarudzo yakakosha. Mublog rino, tichaongorora maficha nemabhenefiti anoita kuti ASTM A139 ive chinhu chinosarudzwa pamapombi egasi epasi pevhu.
Zvivakwa zveMechanical
| Giredhi A | Giredhi B | Giredhi C | Giredhi D | Giredhi E | |
| Simba rekupa, min, Mpa(KSI) | 330(48) | 415(60) | 415(60) | 415(60) | 445(66) |
| Simba rekusimba, min, Mpa(KSI) | 205(30) | 240(35) | 290(42) | 315(46) | 360(52) |
Kuumbwa kweMakemikari
| Chinhu | Kuumbwa, Max, % | ||||
| Giredhi A | Giredhi B | Giredhi C | Giredhi D | Giredhi E | |
| Kabhoni | 0.25 | 0.26 | 0.28 | 0.30 | 0.30 |
| Manganese | 1.00 | 1.00 | 1.20 | 1.30 | 1.40 |
| Fosforasi | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
| Sarufa | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
Kuedzwa kweHydrostatic
Kureba kwepaipi imwe neimwe kunofanira kuyedzwa nemugadziri kusvika pakumanikidzwa kwemvura kuchaita kuti pamadziro epaipi pave nekumanikidzwa kusingasviki 60% yesimba remubereko rakatarwa patembiricha yemumba. Kumanikidzwa kunofanira kutsanangurwa nemuenzaniso unotevera:
P=2St/D
Kusiyana Kunobvumidzwa Muhuremu neMakuriro
Kureba kwepombi imwe neimwe kunofanira kuyerwa kwakasiyana uye huremu hwayo hahufanirwe kusiyana ne10% pamusoro kana 5.5% pasi pehuremu hwayo hwepfungwa, zvichiverengerwa uchishandisa hurefu hwayo nehuremu hwayo pahurefu hweyuniti.
Dhayamita yekunze haifanirwe kusiyana kupfuura ±1% kubva padhayamita yekunze yakatarwa.
Ukobvu hwemadziro chero nguva hunofanira kunge husingapfuuri 12.5% pasi peukobvu hwemadziro hwakatarwa.
Kureba
Hurefu husina kurongeka: 16 kusvika 25ft (4.88 kusvika 7.62m)
Hurefu huviri hwakasiyana-siyana: pamusoro pe25ft kusvika 35ft (7.62 kusvika 10.67m)
Hurefu hwakafanana: musiyano unobvumirwa ±1in
Kuguma
Mapombi anofanira kunge akagadzirwa nemativi asina kuenzana, uye maburi ari kumagumo anofanira kubviswa.
Kana magumo epombi akatarwa kuti ave ebhevel, kona inofanira kuva 30 kusvika 35 degrees
ASTM A139: Kusarudzwa kwePombi yeGasi Yechisikigo Pasi Pevhumitsara:
1. Simba uye kugara kwenguva refu:
ASTM A139pombi yesimbi inotendererainozivikanwa nekusimba kwayo kwakanyanya kwekudhonza uye kusimba kwayo. Hunhu uhwu hwakakosha pamapaipi egasi epasi pevhu nekuti anogara achisangana nemamiriro akasiyana-siyana ekumanikidzwa kwezvakatipoteredza uye pasi pevhu. Dhizaini yepombi yesimbi inotenderera inovandudza kusimba kwayo, ichiibvumira kutsungirira kumanikidzwa kwakanyanya kwekunze uye kuderedza njodzi yekubuda kwemvura kana kuputika.
2. Kuramba ngura:
Mapaipi epasi pevhu anogona kukuvadzwa nengura inokonzerwa nemvura, makemikari evhu nezvimwe zvinhu. ASTM A139 spiral steel pipe inogadzirisa dambudziko iri nekupa simba rekudzivirira ngura zvakanyanya. Izvi zvinonyanya kukonzerwa nekuputira kwayo kwakawanda ne zinc, iyo inopa dziviriro kubva kuzvinhu zvinoparadza, ichivimbisa kugara kwenguva refu kwepaipi uye ichideredza kudiwa kwekugadzirisa kana kutsiviwa nguva nenguva.
3. Kugona kusundira uye kushanduka-shanduka:
Pombi yesimbi yeASTM A139 inochinjika zvakanaka, zvichiita kuti majoini acho anyatsogadzikana uye ashande zvakanaka panguva yekuisa. Chinhu ichi chinobatsira zvikuru kunemapaipi egasi rechisikigo epasi pevhu, sezvo ichivimbisa kuti mapaipi acho akasimba uye inoderedza njodzi yekudonha kwemvura. Pamusoro pezvo, kugona kwayo kugadzira mapaipi esimbi anotenderera kunoita kuti ive nyore kugadzira muhurefu hwakasiyana-siyana uye dhayamita kuti isvike pazvinodiwa zvakasiyana zvepurojekiti, nokudaro zvichibatsira mukushandisa mari shoma uye kugadzirisa zvinhu.
4. Kubudirira kwemutengo:
Imwe mukana mukuru wekushandisa pombi yesimbi yeASTM A139 inotenderera pasi pevhu ndeyekushandisa kwayo zvakanaka. Kugara kwenguva refu kwechinhu ichi, kuramba ngura uye nyore kuisa zvinoderedza mari yekuchengetedza kwenguva refu uye yekutsiva. Pamusoro pezvo, chiyero chayo chakasimba chesimba nehuremu chinoderedza kudiwa kwezvivakwa zvakawanda zvinotsigira panguva yekuisa, zvichikonzera kuchengetedza mari.
5. Kufunga nezvezvakatipoteredza:
Pombi yesimbi inotenderera yeASTM A139 inogadzirwa nenzira dzisingakuvadzi nharaunda uye inotevedzera mitemo yakasimba yekuchengetedza. Hunhu hwayo hunodzivirira ngura hunobatsira kudzivirira kubuda kwegasi, zvichideredza kukuvara kwenharaunda. Pamusoro pezvo, kugona kudzokorodza simbi kunoita kuti ive sarudzo isingakuvadzi nharaunda, zvichisimbisawo mabhenefiti anogara kwenguva refu ekushandisa pombi yesimbi inotenderera yeASTM A139 pamapombi egasi epasi pevhu.
Mukupedzisa:
Kusarudza zvinhu zvakakodzera zvemapaipi egasi epasi pevhu kwakakosha pakuona kuti simba iri rinofambiswa zvakanaka, zvinobudirira uye zvakavimbika. ASTM A139 spiral steel pipe isarudzo yakanaka nekuda kwesimba rayo, kugara kwenguva refu, kuramba ngura, kuchinjika, kushanda zvakanaka pamari, uye kufunga nezvezvakatipoteredza. Hunhu hwayo hwakasiyana hunoita kuti ive sarudzo yekutanga kune mainjiniya nevatungamiriri vemapurojekiti vari kutsvaga kuvaka mapaipi egasi epasi pevhu ayo achagara kwenguva refu. Nekudyara mari muzvinhu zvemhando yepamusoro senge ASTM A139 spiral steel pipe, tinogona kuve nechokwadi chekuti zvivakwa zvekugovera gasi repasi pevhu zvinogara kwenguva refu uye zvakachengeteka kuzvizvarwa zvinotevera.
