Imibhobho yeCandelo leNdawo yeGerati

Imibhobho yeCandelo leNdawo eHlobo lwangaphakathi engaphantsi komhlaba iboniswe umfanekiso

Inkcazo emfutshane:

Xa yakha phantsi imibhobho yegesi yendalo, ukhetho lwezinto ezibonakalayo lubalulekile ekuqinisekiseni ukhuseleko kunye nokusebenza kakuhle kweziseko zophuhliso. I-tubyuli yecandelo elinomthi, ngakumbi iityhubhu ze-ARC ezingama-spriral, ziya zisanda ngenxa yamandla abo aphezulu, ukuqina kunye nokunganyangeki kwe-corosion. Kule bhlog, siya kuphonononga ukubaluleka kwe-hollow-ICandelo leZakhiwo ngokwakhalwa ngokwakhiwa kulwakhiwo lweepayi zemibhobho yegesi yendalo kunye nezinto ezinqwenelekayo azinikezelayo.

Thumela i-imeyile kuthi

Iinkcukacha zemveliso

Iimpawu zeMveliso

I-SPIRAL i-ARCumbhobhoszisetyenziswa ngokubanzi ekwakhiweni kwemigca engaphantsi komhlaba ngenxa yenkqubo yabo yokwenziwa. Imibhobho yenziwa ngokwenza imithwalo yentsimbi eqingqiweyo eshushu ibe yimbonakalo ye-spiral kwaye iwabambisa isebenzisa inkqubo ye-Arc ye-Arc. Oku kuvelisa imibhobho yamandla aphezulu e-ARC enamachaphaza ama-ARC oxhobileyo kunye nobungqingqwa obugqwesileyo, ibenza balungele ukuthuthwa kwegesi yendalo.

Itheyibhile 2 iphambili emzimbeni kunye neekhemikhali zemibhobho yentsimbi (GB / T3091-2008, GB / T9711-2011 kunye ne-API STAR

Umgangatho

Inqanaba lensimbi

Oonobumba bemichiza (%)

Ipropathi ye-tedin

Uvavanyo lwePhardy (v notch) uvavanyo lwempembelelo

Enye

Isivuno (MPA)

Amandla e-thensle (MPA)

(L0 = 5.65 √ s0) Inqanaba le-Min Morect (%)

max

imiz

max

imiz

max

D ≤ 168.3mm

D> 168.3mm

GB / T3091 -2008

I-Q215A

≤ 0.15

I-0.25 <1.20

I-0.045

I-0.050

I-0.35

Yongeza i-NB \ \ v t ngokungqinelana ne-GB / T1591-94

215

335

> 31

I-Q215b

≤ 0.15

I-0.25-0.55

I-0.045

I-0.035

215

335

> 31

I-Q235A

I-0.22

I-0.30 <0.65

I-0.045

I-0.050

I-0.035

235

375

> 26

Q235b

≤ 0.20

I-0.30 ≤ 1.80

I-0.045

I-0.035

235

375

> 26

I-Q295A

I-0.16

I-0.80-1.50

I-0.045

0.55

295

I-390

> 23

I-Q295b

I-0.16

I-0.80-1.50

I-0.045

I-0.040

0.55

295

I-390

> 23

I-Q345A

I-0.20

1.00-1.60

I-0.045

0.55

345

I-510

> 21

Q345b

I-0.20

1.00-1.60

I-0.045

I-0.040

0.55

345

I-510

> 21

I-GB / T911-2011 (PSL1)

L175

I-0.21

I-0.60

I-0.030

Inketho yongeza enye ye-NB \ \ v \ tion okanye nayiphi na indibaniselwano yazo

175

I-310

Isalathiso esinye okanye ezimbini zesalathiso sobunzima sefuthe kunye nendawo yokucheba kunokunyulwa. Kwi-l555, bona umgangatho.

L210

I-0.22

I-0.90

I-0.030

I-210

335

L245

I-0.26

1.20

I-0.030

245

415

L290

I-0.26

1.30

I-0.030

290

415

L320

I-0.26

1.40

I-0.030

320

435

L360

I-0.26

1.40

I-0.030

I-360

460

L390

I-0.26

1.40

I-0.030

I-390

L415

I-0.26

1.40

I-0.030

415

I-520

L450

I-0.26

1.45

I-0.030

I-450

I-535

L485

I-0.26

1.65

I-0.030

485

I-570

API 5L (PSL 1)

A25

I-0.21

I-0.60

I-0.030

Kwintsimbi yeBanga le-B, i-NB + v ≤ i-0.03%; yensimbi yongeza kwiBanga B, ngokuzithandela ukongeza i-NB okanye i-NB + ti t 0.15%

172

I-310

(L0 = 50mm) ukubalwa ngokwefom yefomula elandelayo: e = 19442 ·0 .2

Akukho namnye okanye nawuphi na okanye omabini amandla kunye nendawo yokucheba iyafuneka njengekhrayitheriya onzima.

I-0.22

I-0.90

I-0.030

207

331

I-0.26

1.20

I-0.030

241

414

X42

I-0.26

1.30

I-0.030

290

414

X46

I-0.26

1.40

I-0.030

317

434

X52

I-0.26

1.40

I-0.030

359

455

X56

I-0.26

1.40

I-0.030

386

I-490

X60

I-0.26

1.40

I-0.030

414

I-517

X65

I-0.26

1.45

I-0.030

448

I-531

X70

I-0.26

1.65

I-0.030

483

I-565

Enye yezona zinto zibalulekileyo zombhobho wecandelo elinamacandelo kukunganyangeki. Xa kufikelwa phantsi komhlaba ukhubazekile, imibhobho yegesi yendalo ityhilwa kukufuma, iikhemikhali zomhlaba kunye nezinye izinto ezibonakalayo. Imibhobho ye-ARC engaphantsi kwe-ARC yenzelwe ngokukodwa ukuba iphazamiseke ezi meko ziphantsi komhlaba, iqinisekisa ukungaboni kakuhle kunye nokuthembeka kwemibhobho yegesi yendalo.

Ukongeza kokunganyangeki kwe-corrosion,Imibhobho yeCandeloNikeza amandla aphezulu kunye nozinzo, ubenza balungele ufakelo olungaphantsi komhlaba. Uyilo lweSpiral lwale mibhobho ibonelela ngomthamo ogqwesileyo, obavumela ukuba bakwazi ukumelana nobunzima bomhlaba kunye neminye imikhosi yangaphandle ngaphandle kokusebenza ingqibelelo yabo. Oku kubaluleke kakhulu kwiindawo ezine-geology ye-geology, apho imibhobho kufuneka ikwazi ukumelana nokuhamba komhlaba kunye nokuhlawulwa.

Ukongeza, imibhobho yecandelo lezakhiwo zaziwa ngokuqatha kwaye ineendleko. Baza ngoluhlu olubanzi lwe-SITRICH kunye nobugqwirha kwaye banokwenziwa ukuba bahlangabezane neemfuno ezithile zegesi yegesi. Oku kunciphisa isidingo sezinto ezongeziweyo kunye ne-welding, kukhokelela ekufakweni kokufakelwa okukhawulezileyo kunye neendleko eziphantsi. Ubume bokukhanya kwezi pipes kukwenza ukuthutha kunye nokuphatha impumelelo ngakumbi, ngakumbi igalelo kulondolozo lweendleko.

Xa kufikwa kwokhuseleko kunye nokusebenza kakuhle kweimigca yegesi engaphantsi komhlaba, Ukukhetha izinto eziphathekayo kubalulekile. Imibhobho yecandelo le-Sporal-icandelo, ngakumbi imibhobho ye-ARC engaphantsi komhlaba, dibanisa amandla, ukuqina, ukuxhathisa kweendleko, kubenza balungele ukuhanjiswa kwegesi yendalo engaphantsi komhlaba. Ngokutyala imali kwimibhobho esemgangathweni eyenzelwe ngokukodwa amaziko aphantsi komhlaba, iinkampani zegesi zinokuqinisekisa ukuthembeka kunye nokuhlala kwezibonelelo zazo ngelixa kuncitshiswa indleko zokugcina kunye nokulungisa kwixesha elide.

Kwisishwankathelo, imibhobho yecandelo lezakhiwo Ukunganyangeki kwe-corosion yayo ephezulu, amandla aphezulu kunye nokusebenza kwendleko kwenza ukuba lukhetho lokuqala lweeprojekthi zegesi yendalo. Ngokukhetha izixhobo ezifanelekileyo zamaziko aphantsi komhlaba, iinkampani zegesi zemvelo zinokugcina ukhuseleko kunye nokuthembeka kwezibonelelo zazo, ekugqibeleni zincedisa ukuhambisa igesi yendalo ngokufanelekileyo kubathengi.