Lub Zog thiab Kev Ntseeg Tau ntawm Cov Kav Dej Hollow-Section: Kev Saib Xyuas Kom Tob ntawm Cov Kav Dej Spiral Submerged Arc Welded thiab API 5L Line Pipe
Taw qhia:
Hauv ntiaj teb kev tsim kho thiab kev txhim kho cov khoom siv, kev xaiv cov ntaub ntawv zoo yog qhov tseem ceeb heev.Cov kav dej hollow seem ua lub luag haujlwm tseem ceeb hauv kev muab lub zog, kev ruaj khov thiab kev ntseeg siab rau ntau yam haujlwm. Hauv tsab blog no, peb yuav tshawb nrhiav cov yam ntxwv thiab cov txiaj ntsig ntawm ob hom yeeb nkab tseem ceeb: yeeb nkab kauv submerged arc welded thiab yeeb nkab API 5L.
Cov yeeb nkab uas muaj kauv submerged arc welded:
Cov yeeb nkab uas tau muab tso rau hauv qab dej (SAW), tseem hu ua cov yeeb nkab SSAW, yog siv rau ntau yam kev siv. Qhov tshwj xeeb ntawmSSAW yeeb nkab yog nws cov kab sib txuas uas sib txuas ua ke, uas muab lub zog thiab lub peev xwm thauj khoom ntau dua piv rau lwm hom yeeb nkab. Qhov kev tsim tshwj xeeb no pab faib kev ntxhov siab kom sib npaug thoob plaws hauv cov yeeb nkab, ua rau nws zoo tagnrho rau cov haujlwm uas xav tau kev ruaj khov ntawm cov qauv.
Cov Khoom Siv Mechanical ntawm SSAW yeeb nkab
| qib hlau | lub zog tsawg kawg nkaus | tsawg kawg nkaus Tensile zog | Qhov Ntev Tsawg Kawg Nkaus |
| B | 245 | 415 | 23 |
| X42 | 290 | 415 | 23 |
| X46 | 320 | 435 | 22 |
| X52 | 360 | 460 | 21 |
| X56 | 390 | 490 | 19 |
| X60 | 415 | 520 | 18 |
| X65 | 450 | 535 | 18 |
| X70 | 485 | 570 | 17 |
Cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov kav dej SSAW
| qib hlau | C | Mn | P | S | V+Nb+Ti |
| Qhov siab tshaj plaws % | Qhov siab tshaj plaws % | Qhov siab tshaj plaws % | Qhov siab tshaj plaws % | Qhov siab tshaj plaws % | |
| B | 0.26 | 1.2 | 0.03 | 0.03 | 0.15 |
| X42 | 0.26 | 1.3 | 0.03 | 0.03 | 0.15 |
| X46 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
| X52 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
| X56 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
| X60 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
| X65 | 0.26 | 1.45 | 0.03 | 0.03 | 0.15 |
| X70 | 0.26 | 1.65 | 0.03 | 0.03 | 0.15 |
Qhov Geometric tolerance ntawm cov kav dej SSAW
| Kev kam rau siab ntawm geometric | ||||||||||
| sab nraud txoj kab uas hla | Phab ntsa tuab | kev ncaj ncees | tsis sib npaug | pawg neeg | Qhov siab tshaj plaws ntawm cov hlaws weld | |||||
| D | T | |||||||||
| ≤1422 hli | > 1422 hli | <15 hli | ≥15 hli | qhov kawg ntawm cov yeeb nkab 1.5m | ntev tag nrho | lub cev yeeb nkab | qhov kawg ntawm cov yeeb nkab | T≤13 hli | T> 13 hli | |
| ±0.5% | raws li tau pom zoo | ±10% | ±1.5 hli | 3.2 hli | 0.2% L | 0.020D | 0.015D | +10% | 3.5 hli | 4.8 hli |
Kev Ntsuas Hydrostatic
Cov yeeb nkab yuav tsum tiv taus qhov kev sim hydrostatic yam tsis muaj qhov xau los ntawm cov weld seam lossis lub cev yeeb nkab
Cov khoom sib koom ua ke tsis tas yuav tsum tau kuaj hydrostatically, tsuav yog cov feem ntawm cov yeeb nkab siv los cim cov khoom sib koom ua ke tau raug kuaj hydrostatically ua ntej kev ua haujlwm sib koom ua ke.
Kev taug qab tau:
Rau cov yeeb nkab PSL 1, cov chaw tsim khoom yuav tsum tsim thiab ua raws li cov txheej txheem sau tseg rau kev tswj hwm:
Qhov sib piv ntawm qhov kub kom txog rau thaum txhua qhov kev ntsuam xyuas tshuaj lom neeg raug ua tiav thiab ua raws li cov kev cai tshwj xeeb tau qhia.
Qhov kev sib piv ntawm chav kuaj thiab chav kuaj kom txog rau thaum txhua qhov kev sim kho tshuab raug ua tiav thiab ua raws li cov kev cai tshwj xeeb tau pom.
Rau cov yeeb nkab PSL 2, tus neeg tsim khoom yuav tsum tsim thiab ua raws li cov txheej txheem sau tseg rau kev tswj hwm qhov kub thiab qhov sib piv ntawm chav kuaj rau cov yeeb nkab ntawd. Cov txheej txheem no yuav tsum muab cov hau kev rau kev taug qab txhua qhov ntev ntawm cov yeeb nkab mus rau chav kuaj thiab cov txiaj ntsig ntawm kev kuaj tshuaj lom neeg.
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm cov yeeb nkab SSAW yog nws qhov yooj ywm tsim khoom. Cov yeeb nkab no tuaj yeem tsim tau ntau qhov ntau thiab tsawg, txoj kab uas hla thiab tuab thiab tuaj yeem hloov kho kom tau raws li qhov xav tau ntawm ib qho project tshwj xeeb. Tsis tas li ntawd, cov yeeb nkab spiral submerged arc welded feem ntau yog ua los ntawm cov hlau zoo, ua rau lawv tiv taus corrosion thiab ua kom lub neej ua haujlwm ntev dua.
API 5L Kab Yeeb Nkab:
API 5L kab yeeb nkabyog ib qho yeeb nkab uas siv dav dav uas ua tau raws li American Petroleum Institute (API) cov qauv. Cov yeeb nkab no yog tsim los thauj cov kua dej, xws li roj thiab roj av, hla kev deb. API 5L kab yeeb nkab yog lub npe nrov rau nws lub zog siab, ruaj khov thiab tiv taus cov xwm txheej ib puag ncig hnyav.
Cov txheej txheem tsim cov kav dej API 5L muaj kev tswj xyuas zoo kom ntseeg tau tias nws muaj kev ntseeg siab. Cov kav dej no yog ua los ntawm cov hlau carbon thiab muaj cov khoom siv kho tshuab zoo heev. Kev ua raws li cov qauv API ua kom ntseeg tau tias cov kav dej no tuaj yeem tiv taus kev kub siab thiab kev hloov pauv kub, ua rau lawv haum rau cov ntawv thov tseem ceeb hauv kev lag luam roj thiab roj av.
Cov txiaj ntsig ua ke:
Thaum cov yeeb nkab SSAW uas muaj kauv thiab cov yeeb nkab API 5L raug muab sib xyaw ua ke, lawv muab kev ruaj khov thiab kev ntseeg siab uas tsis muaj qhov sib piv. Cov kab sib txuas ntawm cov yeeb nkab SSAW ua ke nrog lub zog thiab kev ruaj khov ntawm cov yeeb nkab API 5L tsim kom muaj lub zog txhawb nqa.
Ntxiv rau lawv cov txiaj ntsig, qhov sib xws ntawm cov yeeb nkab sib txuas ua ke thiab cov yeeb nkab API 5L ua rau cov haujlwm raj xa dej ua haujlwm tau zoo dua. Qhov ua tau ntau yam ntawm cov yeeb nkab SSAW ua rau kev sib txuas yooj yim nrog cov yeeb nkab API 5L, ua kom ntseeg tau tias cov kua dej ntws zoo hauv cov yeeb nkab network.
Xaus lus:
Cov kav dej hollow section structural yog qhov tseem ceeb heev thaum tsim cov khoom siv muaj zog. Kev siv ua ke ntawm cov kav dej SSAW thiab cov kav dej API 5L muab cov kev daws teeb meem zoo uas muab lub zog, kev ruaj khov thiab kev ntseeg siab rau ntau yam haujlwm. Txawm hais tias txhawb nqa lub hauv paus ntawm cov tsev siab lossis thauj cov kua dej tseem ceeb hla kev deb, cov kav dej no ua lub luag haujlwm tseem ceeb hauv kev ua kom peb cov khoom siv muaj sia nyob ntev thiab ruaj khov. Los ntawm kev siv lub zog ntawm cov kav dej spiral submerged arc welded thiab kev ntseeg siab ntawm cov kav dej API 5L, cov engineers tuaj yeem tsim lub hauv paus ruaj khov rau tag kis zoo dua.
