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    Ukuqonda Ukubaluleka Kwezinqubo Ezifanelekile Zokushisela Amapayipi Epayipi Lensimbi Elivunguzayo Elisetshenziswa Emigqeni Yamanzi Angaphansi

    Ukuqonda Ukubaluleka Kwezinqubo Zokushisela Amapayipi Okufanelekile Kwepayipi Lensimbi Elivunguzayo Elisetshenziswa Emigqeni Yamanzi Angaphansi Isithombe Esifakiwe
    • Ukuqonda Ukubaluleka Kwezinqubo Ezifanelekile Zokushisela Amapayipi Epayipi Lensimbi Elivunguzayo Elisetshenziswa Emigqeni Yamanzi Angaphansi

    Incazelo emfushane:

    Lapho ufaka imigqa yamanzi angaphansi komhlaba, ukusebenzisa ipayipi lekhwalithi ephezulu kubalulekile ekuqinisekiseni ukuqina kwesikhathi eside nokumelana nezimo zemvelo.Olunye uhlobo lwamapayipi oluvame ukusetshenziselwa imigqa yamanzi angaphansi komhlaba ipayipi lensimbi elivunguzayo.Kodwa-ke, ukusebenzisa amapayipi ekhwalithi ephezulu akwanele ukuqinisekisa impilo ende yamapayipi akho amanzi.Izinqubo zokushisela amapayipi ezifanele zibalulekile ekuqinisekiseni ukuthi amapayipi ensimbi ezungezayo angakwazi ukumelana nezimo ezinzima ezingaphansi komhlaba futhi anikeze ukulethwa kwamanzi okuthembekile.


    Imininingwane Yomkhiqizo

    Omaka bomkhiqizo

     Amapayipi ensimbi okuvunguzaasetshenziswa kakhulu kumapayipi amanzi angaphansi komhlaba ngenxa yamandla awo aphezulu kanye nekhono lokumelana nokucindezela kwangaphandle.Amapayipi akhiqizwa ngamapheshana ensimbi agoqelwe ashisayo enza umumo othandelayo.Inqubo yokushisela okuvunguzayo esetshenziselwa ukwakha la mapayipi inikeza ubuqotho obuhle kakhulu besakhiwo, iwenze alungele ukusetshenziswa ngaphansi komhlaba.

    I-Nominal Outer Diameter Ukuqina Kodonga Lwezibizo (mm)
    mm phakathi 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 18.0 20.0 22.0
    Isisindo Ngobude Beyunithi (kg/m)
    219.1 8-5/8 31.53 36.61 41.65                      
    273.1 10-3/4 39.52 45.94 52.30                      
    323.9 12-3/4 47.04 54.71 62.32 69.89 77.41                  
    (325)   47.20 54.90 62.54 70.14 77.68                  
    355.6 14 51.73 60.18 68.58 76.93 85.23                  
    (377.0)   54.89 63.87 72.80 81.67 90.50                  
    406.4 16 59.25 68.95 78.60 88.20 97.76 107.26 116.72              
    (426.0)   62.14 72.33 82.46 92.55 102.59 112.58 122.51              
    457 18 66.73 77.68 88.58 99.44 110.24 120.99 131.69              
    (478.0)   69.84 81.30 92.72 104.09 115.41 126.69 137.90              
    508.0 20 74.28 86.49 98.65 110.75 122.81 134.82 146.79 158.69 170.56          
    (529.0)   77.38 90.11 102.78 115.40 127.99 140.52 152.99 165.43 177.80          
    559.0 22 81.82 95.29 108.70 122.07 135.38 148.65 161.88 175.04 188.17          
    610.0 24 89.37 104.10 118.77 133.39 147.97 162.48 176.97 191.40 205.78          
    (630.0)   92.33 107.54 122.71 137.83 152.90 167.92 182.89 197.81 212.68          
    660.0 26 96.77 112.73 128.63 144.48 160.30 176.05 191.77 207.43 223.04          
    711.0 28 104.32 121.53 138.70 155.81 172.88 189.89 206.86 223.78 240.65 257.47 274.24      
    (720.0)   105.65 123.09 140.47 157.81 175.10 192.34 209.52 226.66 243.75 260.80 277.79      
    762.0 30 111.86 130.34 148.76 167.13 185.45 203.73 211.95 240.13 258.26 276.33 294.36      
    813.0 32 119.41 139.14 158.82 178.45 198.03 217.56 237.05 256.48 275.86 295.20 314.48      
    (820.0)   120.45 140.35 160.20 180.00 199.76 219.46 239.12 258.72 278.28 297.79 317.25      
    864.0 34   147.94 168.88 189.77 210.61 231.40 252.14 272.83 293.47 314.06 334.61      
    914.0 36     178.75 200.87 222.94 244.96 266.94 288.86 310.73 332.56 354.34      
    (920.0)       179.93 202.20 224.42 246.59 286.70 290.78 312.79 334.78 356.68      
    965.0 38     188.81 212.19 235.52 258.80 282.03 305.21 328.34 351.43 374.46      
    1016.0 40     198.87 223.51 248.09 272.63 297.12 321.56 345.95 370.29 394.58 443.02    
    (1020.0)       199.66 224.39 249.08 273.72 298.31 322.84 347.33 371.77 396.16 444.77    
    1067.0 42     208.93 234.83 260.67 286.47 312.21 337.91 363.56 389.16 414.71 465.66    
    118.0 44     218.99 246.15 273.25 300.30 327.31 354.26 381.17 408.02 343.83 488.30    
    1168.0 46     228.86 257.24 285.58 313.87 342.10 370.29 398.43 426.52 454.56 510.49    
    1219.0 48     238.92 268.56 298.16 327.70 357.20 386.64 416.04 445.39 474.68 553.13    
    (1220.0)       239.12 268.78 198.40 327.97 357.49 386.96 146.38 445.76 475.08 533.58    
    1321.0 52       291.20 323.31 327.97 387.38 449.34 451.26 483.12 514.93 578.41    
    (1420.0)           347.72 355.37 416.66 451.08 485.41 519.74 553.96 622.32 690.52  
    1422.0 56         348.22 382.23 417.27 451.72 486.13 520.48 554.97 623.25 691.51 759.58
    1524.0 60         373.38 410.44 447.46 484.43 521.34 558.21 595.03 688.52 741.82 814.91
    (1620.0)           397.03 436.48 457.84 515.20 554.46 593.73 623.87 711.11 789.12 867.00
    1626.0 64         398.53 438.11 477.64 517.13 556.56 595.95 635.28 713.80 792.13 870.26
    1727.0 68         423.44 465.51 507.53 549.51 591.43 633.31 675.13 758.64 841.94 925.05
    (1820.0)           446.37 492.74 535.06 579.32 623.50 667.71 711.79 799.92 887.81 975.51
    1829.0 72           493.18     626.65 671.04 714.20 803.92 890.77 980.39
    1930.0 76                 661.52 708.40 755.23 848.75 942.07 1035.19
    (2020.0)                   692.60 741.69 790.75 888.70 986.41 1084.02
    2032.0 80                 696.74 746.13 795.48 894.03 992.38 1090.53
    (2220.0)                   761.65 815.68 869.66 977.50 1085.80 1192.53
    (2420.0)                       948.58 1066.26 1183.75 1301.04
    (2540.0) 100                     995.93 1119.53 1242.94 1366.15
    (2845.0) 112                     1116.28 1254.93 1393.37 1531.63

    Qaphela:

    1.Okunye okutholakalayo amapayipi ensimbi anobubanzi obungaphandle begama kanye nogqinsi lwezindonga phakathi kosayizi bawo abaseduze abasohlwini lwethebula, kodwa kuzosayinwa inkontileka.

    2. Amadayamitha angaphandle okuzisholo kubakaki asetafuleni angamadayamitha agciniwe.

    Esinye sezici ezibaluleke kakhulu zokusebenzisa i-spiral steelipayipi lemigqa yamanzi angaphansi komhlabakuyizinqubo zokushisela ezifanele.I-Welding iyinqubo yokuhlanganisa izingxenye ezimbili zensimbi ngokusebenzisa ukushisa nokucindezela.Ngamapayipi amanzi angaphansi komhlaba, ikhwalithi yokushisela ithinta ngokuqondile ubuqotho nokuthembeka okuphelele kwepayipi.

    Okufanelekileizinqubo zokushisela amapayipingoba Kuvunguza ipayipi lensimbi kuhilela izinyathelo ezimbalwa ezibalulekile.Okokuqala, ingaphezulu lepayipi elizoshiselwa kufanele lihlanzeke futhi lingabi nakungcola njengokungcola, uwoyela, noma upende.Lokhu kuqinisekisa ukuthi i-weld iqinile futhi ayinakho ukungcola okungase kuphazamise amandla ayo.

    Ipayipi le-SSAW

    Okulandelayo, amapharamitha wokushisela afana nokufaka ukushisa, isivinini sokushisela, kanye nekhono kufanele kulawulwe ngokucophelela ukuze kuzuzwe ukushisela kwekhwalithi ephezulu.Ukusebenzisa izinto zokushisela ezifanele kanye namasu kubalulekile ekuvimbeleni amaphutha afana ne-porosity, imifantu, noma ukuntuleka kokuhlanganisa, okungase kuphazamise ubuqotho be-weld.

    Ukwengeza, izinqubo ezifanele zokushisa ngaphambi nangemva kokushisela zibalulekile epayipini lensimbi elivunguzayo elisetshenziswa emigqeni yamanzi angaphansi komhlaba.Ukushisa kwangaphambi kokushisa kusiza ukunciphisa ingozi yokuqhekeka futhi kuthuthukisa ikhwalithi ye-weld iyonke, kuyilapho ukwelashwa kokushisa kwangemva kwe-weld kunciphisa izingcindezi ezinsalela futhi kuqinisekisa ukwakheka okufanayo kwe-microstructure kuyo yonke indawo yokushisela.

    Ngaphezu kwalokho, ukusetshenziswa kobuchwepheshe bokushisela obuthuthukisiwe njengezinqubo zokushisela ezizenzakalelayo kanye nokuhlolwa okungabhubhi kungathuthukisa ikhwalithi nokuthembeka kokushisela.Lobu buchwepheshe busiza ukuqinisekisa ukuthi amalunga ashiselwe ahlangabezana namandla adingekayo kanye nezindinganiso zekhwalithi ukuze anikeze ukuthula kwengqondo mayelana nokusebenza kwesikhathi eside kwemigqa yamanzi angaphansi komhlaba.

    Kafushane, izinqubo zokushisela amapayipi ezifanele zibalulekile ekuqinisekiseni ubuqotho nokuphila isikhathi eside kwepayipi lensimbi elivunguzayo elisetshenziswa emigqeni yamanzi angaphansi komhlaba.Ngokulandela imingcele ye-welding edingekayo, amasu kanye nezinyathelo zokulawula ikhwalithi, ingozi yokukhubazeka kwe-welding kanye nokwehluleka kungancishiswa kakhulu.Umphumela uba ulayini wamanzi angaphansi komhlaba onokwethenjelwa noqinile ongamelana novivinyo lwesikhathi futhi unikeze izinsiza zokulethwa kwamanzi eziphephile nezisebenza kahle.Olayini bamanzi angaphansi komhlaba, ukutshala imali ohlelweni lokushisela olufanele kuyisinyathelo esibalulekile ekuqinisekiseni ukwethembeka okuphelele nokuhlala isikhathi eside kwepayipi.

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