Ipayipi Lensimbi Elishiselwe Okuvunguza Ngamafutha Negesi
Yethula:
Emkhakheni ohlale uvela wezokwakha nobunjiniyela, intuthuko yezobuchwepheshe iyaqhubeka nokuchaza kabusha indlela amaphrojekthi aqaliswa ngayo.Enye yezinto ezintsha eziphawulekayo ipayipi lensimbi elivunguzayo.Ipayipi linemithungo ebusweni balo futhi lenziwa ngokugoba amapheshana ensimbi abe yindilinga bese eyishisela, okuletha amandla akhethekile, ukuqina kanye nokuguquguquka kwenqubo yokushisela ipayipi.Lesi singeniso somkhiqizo sihlose ukukhombisa izici eziphawulekayo zepayipi elishiselwe elivunguzayo futhi sigqamise indima yalo yokuguqula embonini kawoyela negesi.
Incazelo Yomkhiqizo:
Amapayipi ensimbi ashiselwe okuvunguza, ngokuklama kwazo, zinikeza izinzuzo eziningana ezihlukile kumasistimu amapayipi avamile.Inqubo yayo yokukhiqiza eyingqayizivele iqinisekisa ukushuba okungaguquki kubo bonke ubude bayo, okwenza imelane kakhulu nezingcindezi zangaphakathi nezangaphandle.Lokhu kuqina kwenza ipayipi elishiselwe elivunguzayo lilungele ukusetshenziswa kokuhambisa uwoyela negesi lapho ukuphepha nokuthembeka kubaluleke kakhulu.
Ubuchwepheshe be-spiral welding obusetshenziswa ekukhiqizeni kwabo buhlinzeka ngokuguquguquka okukhulu nokuzivumelanisa nezimo, okuvumela ipayipi ukuthi imelane nezimo ezimbi kakhulu ezifana namazinga okushisa aphezulu, umehluko wengcindezi kanye nezinhlekelele zemvelo.Ngaphezu kwalokho, lo mklamo omusha uthuthukisa ukugqwala nokumelana nokuguga, usize ekwandiseni impilo yesevisi nokunciphisa izindleko zokuyilungisa.
Ithebula 2 Izakhiwo Eziyinhloko Zomzimba Nezamakhemikhali Zamapayipi Ensimbi (GB/T3091-2008, GB/T9711-2011 kanye ne-API Spec 5L) | ||||||||||||||
Okujwayelekile | Ibanga Lensimbi | Amakhemikhali (%) | I-Tensile Property | Ukuhlolwa Komphumela we-Charpy(V notch) | ||||||||||
c | Mn | p | s | Si | Okunye | I-Yield Strength (Mpa) | Amandla Okuqina (Mpa) | (L0=5.65 √ S0 (iminithi Lokukala Lokunwebeka) (%) | ||||||
ubuningi | ubuningi | ubuningi | ubuningi | ubuningi | imiz | ubuningi | imiz | ubuningi | D ≤ 168.33mm | D > 168.3mm | ||||
I-GB/T3091 -2008 | Q215A | ≤ 0.15 | 0.25 < 1.20 | 0.045 | 0.050 | 0.35 | Yengeza i-Nb\V\Ti ngokuvumelana ne-GB/T1591-94 | 215 | 335 | 15 | > 31 | |||
Q215B | ≤ 0.15 | 0.25-0,55 | 0.045 | 0.045 | 0.035 | 215 | 335 | 15 | > 31 | |||||
Q235A | ≤ 0.22 | 0.30 < 0.65 | 0.045 | 0.050 | 0.035 | 235 | 375 | 15 | >26 | |||||
Q235B | ≤ 0.20 | 0.30 ≤ 1.80 | 0.045 | 0.045 | 0.035 | 235 | 375 | 15 | >26 | |||||
Q295A | 0.16 | 0.80-1,50 | 0.045 | 0.045 | 0.55 | 295 | 390 | 13 | >23 | |||||
Q295B | 0.16 | 0.80-1,50 | 0.045 | 0.040 | 0.55 | 295 | 390 | 13 | >23 | |||||
Q345A | 0.20 | 1.00-1.60 | 0.045 | 0.045 | 0.55 | 345 | 510 | 13 | >21 | |||||
Q345B | 0.20 | 1.00-1.60 | 0.045 | 0.040 | 0.55 | 345 | 510 | 13 | >21 | |||||
I-GB/T9711-2011 (PSL1) | L175 | 0.21 | 0.60 | 0.030 | 0.030 | Uma ukhetha ukungeza enye yezinto ze-Nb\V\Ti nanoma iyiphi inhlanganisela yazo | 175 | 310 | 27 | Inkomba eyodwa noma ezimbili zokuqina kwamandla kanye nendawo yokugunda ingase ikhethwe.Nge-L555, bona indinganiso. | ||||
L210 | 0.22 | 0.90 | 0.030 | 0.030 | 210 | 335 | 25 | |||||||
L245 | 0.26 | 1.20 | 0.030 | 0.030 | 245 | 415 | 21 | |||||||
L290 | 0.26 | 1.30 | 0.030 | 0.030 | 290 | 415 | 21 | |||||||
L320 | 0.26 | 1.40 | 0.030 | 0.030 | 320 | 435 | 20 | |||||||
L360 | 0.26 | 1.40 | 0.030 | 0.030 | 360 | 460 | 19 | |||||||
L390 | 0.26 | 1.40 | 0.030 | 0.030 | 390 | 390 | 18 | |||||||
L415 | 0.26 | 1.40 | 0.030 | 0.030 | 415 | 520 | 17 | |||||||
L450 | 0.26 | 1.45 | 0.030 | 0.030 | 450 | 535 | 17 | |||||||
L485 | 0.26 | 1.65 | 0.030 | 0.030 | 485 | 570 | 16 | |||||||
I-API 5L (PSL 1) | A25 | 0.21 | 0.60 | 0.030 | 0.030 | Okwensimbi yebanga B,Nb+V ≤ 0.03%;yensimbi ≥ grade B,ongakukhetha ukungeza i-Nb noma i-V noma inhlanganisela yakho, kanye ne-Nb+V+Ti ≤ 0.15% | 172 | 310 | (L0=50.8mm) kufanele ibalwe ngokuvumelana nefomula elandelayo:e=1944·A0 .2/U0 .0 A:Indawo yesampula ku-mm2 U: Amandla amancane okubamba acacisiwe ku-Mpa | Awekho noma amanye noma womabili amandla okuthinta nendawo yokugunda edingekayo njengombandela wokuqina. | ||||
A | 0.22 | 0.90 | 0.030 | 0.030 | 207 | 331 | ||||||||
B | 0.26 | 1.20 | 0.030 | 0.030 | 241 | 414 | ||||||||
X42 | 0.26 | 1.30 | 0.030 | 0.030 | 290 | 414 | ||||||||
X46 | 0.26 | 1.40 | 0.030 | 0.030 | 317 | 434 | ||||||||
X52 | 0.26 | 1.40 | 0.030 | 0.030 | 359 | 455 | ||||||||
X56 | 0.26 | 1.40 | 0.030 | 0.030 | 386 | 490 | ||||||||
X60 | 0.26 | 1.40 | 0.030 | 0.030 | 414 | 517 | ||||||||
X65 | 0.26 | 1.45 | 0.030 | 0.030 | 448 | 531 | ||||||||
X70 | 0.26 | 1.65 | 0.030 | 0.030 | 483 | 565 |
Ngaphezu kwalokho, ukuxhunywa kwe-spiral weld kuqinisekisa ukusebenza okuhle kakhulu kobufakazi bokuvuza.Ngakho-ke, amapayipi ashiselwe ku-spiral ahlinzeka ngamapayipi aphephile okuthutha uwoyela negesi, anciphisa ubungozi bokuvuza kanye nobungozi bemvelo.Lokhu, kuhambisana nokusebenza kahle kokugeleza kwayo okuphezulu nokusebenza kahle kwe-hydraulic, kuyenza ilungele izinkampani zamandla ezifuna izixazululo ezinokwethenjelwa nezisimeme.
Ukuguquguquka kwepayipi elishiselwe okuvunguza akugcini ekuthuthweni kukawoyela negesi.Ukwakhiwa kwayo okuqinile kanye nobuqotho besakhiwo esihle kakhulu kuyivumela ukuthi isetshenziswe ezinhlelweni ezihlukahlukene, okuhlanganisa ukuhlinzekwa kwamanzi, izinhlelo zokudonsa amanzi, kanye namaphrojekthi wobunjiniyela bomphakathi.Kungakhathaliseki ukuthi asetshenziselwa ukuthutha uketshezi noma asetshenziswa njengezakhiwo ezisekelayo, amapayipi ensimbi ashiselwe ayi-spiral ahamba phambili ekunikezeni izisombululo ezinokwethenjelwa nezingabizi kakhulu.
Ukwethulwa kwamapayipi ensimbi ayi-spiral welded kuye kwathuthukisa kakhulu izinqubo zokushisela amapayipi, kwenza inqubo ibe lula futhi kunciphisa isikhathi sonke sephrojekthi.Ukufakwa kalula, kuhlanganiswe nesilinganiso esiphakeme samandla kuya kwesisindo, kuvumela inqubo yokwakha ehlelekile futhi ephumelelayo.Lokhu kusho ukonga okubalulekile ezindlekweni zomsebenzi, izidingo zemishini kanye nezindleko zokuphathwa kwephrojekthi, kuyilapho kuqinisekisa ikhwalithi ephezulu nokuphila isikhathi eside.
Ekuphetheni:
Kafushane, i-spiral welded pipe isiguqule insimu yezinqubo zokushisela amapayipi, ikakhulukazi embonini kawoyela negesi.Ukuhlanganiswa kwayo okungenamthungo kwamandla, ukuqina, ukuguquguquka kanye nokusebenza kahle kwezindleko kuyenza ibe ilungele izinkampani zamandla ezifuna izixazululo ezinokwethenjelwa.Ngomfutho ophakeme, ukugqwala nokumelana nokuvuza, amapayipi ensimbi ashiselwe okuvunguza adlula amapayipi endabuko ukuze anikeze inethiwekhi esimeme nephephile yokuthuthwa kwezinsiza ezibalulekile.Njengoba imboni yezokwakha iqhubeka nokwamukela intuthuko yezobuchwepheshe, ipayipi elishiselwe elivunguzayo liba ubufakazi bobuhlakani bomuntu kanye nokuqamba okusha, okumemezela ikusasa lokusebenza kahle, ukuphepha nokwethembeka.