Ipayipi Lensimbi Elishiselwe: Umhlahlandlela Ophelele Wokuqinisekisa Ukuxhuma Okuphumelelayo Nokwethenjwa

Yethula:

Kuzo zonke izimboni, amapayipi ensimbi asetshenziswa kakhulu ukuze aqine, ahlale eqinile, futhi enze izinto ezihlukahlukene.Lapho uhlanganisa amapayipi ensimbi, ukushisela kuyindlela ekhethwayo.I-Welding idala ukuxhumana okuqinile okungamelana nezingcindezi eziphezulu, okuyenza ibaluleke kakhulu emikhakheni efana neyokwakha, uwoyela negesi, kanye nokukhiqiza.Kule bhulogi, sizongena phakathi kokubaluleka kokushisela ipayipi lensimbi futhi sinikeze umhlahlandlela ophelele wokuqinisekisa ukuxhumana okusebenzayo nokuthembekile.

Impahla Mechanical

Ukwakheka Kwamakhemikhali

Ukuhlolwa kwe-Hydrostatic

Ubude bepayipi ngalinye kufanele buhlolwe ngumenzi kumfutho we-hydrostatic ozokhiqiza odongeni lwamapayipi ingcindezi engekho ngaphansi kuka-60% wamandla esivuno amancane ashiwo ekamelweni lokushisa.Ingcindezi izonqunywa yi-equation elandelayo:
P=2St/D

Ukwehluka Okuvumelekile Kwesisindo Nobukhulu

Ubude bepayipi ngalinye buzokalwa ngokuhlukene futhi isisindo salo akumele sihluke ngaphezu kuka-10% ngaphezulu noma u-5.5% ngaphansi kwesisindo salo esicatshangelwayo, kubalwe kusetshenziswa ubude balo nesisindo salo ngobude beyunithi ngayinye.
Idayamitha yangaphandle akumele ihluke ngaphezu kuka-±1% ukusuka kububanzi obukhethekile obushiwo bengaphandle.
Ukujiya kodonga kunoma iyiphi indawo akufanele kube ngaphezu kuka-12.5% ​​ngaphansi kogqinsi olushiwo.

Ubude

Ubude obungahleliwe obubodwa: 16 kuya ku-25ft(4.88 kuya ku-7.62m)
Ubude obuphindwe kabili obungahleliwe: ngaphezulu kwama-25ft kuya ku-35ft(7.62 kuya ku-10.67m)
Ubude obufanayo: ukuhluka okuvumelekile ±1in

Iyaphela

Izinqwaba zamapayipi zizonikezwa iziphetho ezicacile, futhi ama-burrs ekugcineni azosuswa.
Lapho ukuphela kwepayipi okushiwo ukuthi kube yi-bevel iphela, i-engeli izoba ngu-30 kuya ku-35 degree

1. Qonda amapayipi ensimbi:

 Amapayipi ensimbiziza ngobukhulu obuhlukahlukene, izimo kanye nezinto zokwakha, ngayinye ilungele ukusetshenziswa okuthile.Ngokuvamile zenziwe nge-carbon steel, insimbi engagqwali noma i-alloy steel.Amapayipi ensimbi ye-carbon asetshenziswa kabanzi ngenxa yokufinyeleleka kwawo namandla, kuyilapho amapayipi ensimbi engenasici enikeza ukumelana nokugqwala okuhle kakhulu.Ezindaweni zokushisa okuphezulu, amapayipi ensimbi ye-alloy akhethwa.Ukuqonda izinhlobo ezahlukene zamapayipi ensimbi kuzosiza ekunqumeni inketho yokufaka i-welding efanele.

2. Khetha inqubo yokushisela:

Kunezinhlobonhlobo zezinqubo zokushisela ezisetshenziselwa ukuhlanganisa ipayipi lensimbi, okuhlanganisa ukushisela i-arc, i-TIG (i-tungsten inert gas) ukushisela, i-MIG (igesi yensimbi inert) ukushisela, kanye nokushisela kwe-arc engaphansi kwamanzi.Ukukhethwa kwenqubo ye-welding kuncike ezintweni ezifana nohlobo lwensimbi, ububanzi bepayipi, indawo ye-welding kanye nomklamo ohlangene.Indlela ngayinye inezinzuzo zayo kanye nokulinganiselwa kwayo, ngakho ukukhetha inqubo efanele kakhulu yesicelo osifunayo kubalulekile.

3. Lungisa ipayipi lensimbi:

Ukulungiswa kwamapayipi okulungile ngaphambi kokushisela kubalulekile ekuzuzeni ukuhlangana okuqinile nokuthembekile.Kubandakanya ukuhlanza indawo yepayipi ukususa noma yikuphi ukugqwala, isikali noma ukungcola.Lokhu kungenziwa ngezindlela zokuhlanza ngomshini njengokuxubha ngocingo noma ukugaya, noma ngokusebenzisa izinto zokuhlanza amakhemikhali.Ukwengeza, i-chamfering ukuphela kwepayipi kudala i-groove emise okwe-V evumela ukungena okungcono kwezinto zokugcwalisa, ngaleyo ndlela kube lula inqubo yokushisela.

4. Ubuchwepheshe bokushisela:

Indlela yokushisela esetshenziswayo ithinta kakhulu izinga lokuhlangana.Ngokuya ngenqubo yokushisela esetshenzisiwe, imingcele efanelekile efana ne-welding current, i-voltage, isivinini sokuhamba kanye nokufakwa kokushisa kufanele kugcinwe.Ikhono nolwazi lomshiseli nakho kudlala indima ebalulekile ekuzuzeni ukushisela okuhle nokungenasici.Amasu afana nokusebenza okufanele kwe-electrode, ukugcina i-arc ezinzile, nokuqinisekisa ukugeleza kwegesi okuvikela okwanele kungasiza ekunciphiseni amaphutha afana ne-porosity noma ukuntuleka kokuhlangana.

5. Ukuhlolwa kwangemuva kokushisela:

Uma ukushisela sekuqediwe, kubalulekile ukwenza ukuhlolwa kwe-post-weld ukuze kutholwe noma yimaphi amaphutha noma amaphutha angabeka engcupheni ubuqotho belunga.Kungasetshenziswa izindlela zokuhlola ezingalimazi njengokuhlola okubukwayo, ukuhlola ukungena kodayi, ukuhlolwa kwezinhlayiyana kazibuthe noma ukuhlolwa kwe-ultrasonic.Lokhu kuhlola kusiza ukuhlonza izinkinga ezingaba khona futhi kuqinisekise ukuthi amajoyinti ashiselwe ahlangabezana nezimfuneko ezidingekayo.

Ekuphetheni:

 Ipayipi Lensimbi Lokushiselakudinga ukucatshangelwa ngokucophelela nokwenza okulungile ukuze kuqinisekiswe ukuxhumana okusebenzayo nokuthembekile.Ngokuqonda izinhlobo ezahlukene zamapayipi ensimbi, ukukhetha inqubo efanele yokufaka i-welding, ukulungiselela ngokugcwele ipayipi, usebenzisa amasu okushisela afanelekile, nokwenza ukuhlolwa kwe-post-weld, ungakwazi ukufeza ama-welds aqinile futhi aphezulu.Lokhu kusiza ukuthuthukisa ukuphepha, ukwethembeka kanye nempilo yesevisi yamapayipi ensimbi emisebenzini ehlukahlukene lapho eyizingxenye ezibalulekile.