API 5L ahịrị ọkpọkọ maka ọkpọkọ mmanụ na gas

Enwere ike kewaa pipeline gas ụzọ atọ: pipeline na-achịkọta gas, pipeline gas, na pipeline nkesa gas dịka ojiji ha si dị.

①Gas na-anakọta pipeline: pipeline sitere na isi iyi nke ikuku gas site na ọdụ ụgbọ mmiri gaa na ụlọ ọrụ ọgwụgwọ gas ma ọ bụ ọdụ gas compressor na-amalite, nke a na-ejikarị na-anakọta gas na-adịghị edozi nke a na-esi na stratum.N'ihi nnukwu nrụgide nke gas nke ọma, nrụgide nke ọkpọkọ ikpokọta gas na-adịkarị n'elu 100 kgf / cm2, na dayameta ọkpọkọ bụ 50 ruo 150 mm.

② pipeline gas: pipeline sitere na ụlọ ọrụ na-arụ ọrụ gas ma ọ bụ ịmalite gas compressor ọdụ gas na ebe nkesa gas, nnukwu ndị ọrụ ma ọ bụ nchekwa gas na isi obodo, yana pipeline na-ekwurịta okwu n'etiti isi iyi gas.Mgbe nhazichara, pipeline na-adabere na njem ụgbọ mmiri.Ọkọlọtọ gas dị mma (lee teknụzụ nnyefe gas pipeline) bụ akụkụ bụ isi nke sistemu nnyefe gas niile.Dayameta nke ọkpọkọ gas dị ukwuu karịa nke gas na-anakọta pipeline na ọkpọkọ nkesa gas.Okpokoro gas kacha ibu nwere dayameta nke 1420 mm.A na-ebufe gas sitere n'okike n'okpuru nrụgide site na ebe mmalite mmalite na ọdụ compressor n'akụkụ ahịrị.Nrụgide ikuku gas bụ 70-80 kgf / cm2, na ngụkọta ogologo nke pipeline nwere ike iru puku kwuru puku kilomita.

③Gas nkesa pipeline: pipeline si n'obodo ukwu mgbali regulating na metering ọdụ ka onye ọrụ alaka akara nwere ala mgbali, otutu alaka, ok ọkpọkọ netwọk, na obere ọkpọkọ dayameta.Na mgbakwunye na ọnụ ọgụgụ dị ukwuu nke ọkpọkọ ígwè, a pụkwara iji ọkpọkọ plastik ma ọ bụ ihe ndị ọzọ mee ka ọkpọkọ nkesa gas dị ala..

X-60 obere alloy ígwè (oke ike nke 42 kgf / cm2) na-ejikarị eme ihe maka ọkpọkọ, na ihe ndị dị elu dị ka X-65 na X-70 amalitela iji ya.Iji belata nguzogide esemokwu na pipeline, a na-ekpuchikarị ọkpọkọ ígwè ọhụrụ karịrị 426 mm na mkpuchi dị n'ime.

A na-ebufe gas nke ihe anụ ahụ dị iche iche n'usoro n'otu pipeline, yana ule ikuku gas na mmiri mmiri na-ebufe pipeline na -70 ° C na 77 kgf/cm2 nrụgide dị elu.Usoro njem pipeline nke ikuku gas nwere akụkụ abụọ: ọdụ ụgbọ mmiri na-ebufe gas na usoro ahịrị.Usoro ahịrị na-agụnye pipeline, ọnụ ụlọ valvụ n'akụkụ ụzọ ahụ, ụlọ na-agafe (lee pipeline crossing project and pipeline crossing project), ebe nchekwa nke cathodic (lee pipeline anticorrosion), usoro nkwurịta okwu pipeline, izipu na akpaaka nlekota usoro (lee pipeline nlekota oru), wdg .

Ọkpụkpụ ígwè bụ isi ihe nke pipeline.Natural gas nnyefe ígwè ọkpọkọ bụ a pụrụ iche metallurgical ngwaahịa kpụrụ miri nhazi nke efere (belt).N'ihi ọdịiche dị na teknụzụ usoro, nhazi nke pipeline ígwè nwere ụfọdụ ọdịiche dị na pipeline ígwè nke ndị nrụpụta dị iche iche na-emepụta.Site na mmepe na-aga n'ihu nke nyocha nchara nchara, Canada na mba ndị ọzọ etinyela akụkụ ule nke X100 na X120 pipeline steel.N'ime ọrụ pipeline Jining tie-line na China, ejiri eriri pipeline nke ọkwa X80 mee ihe maka ngalaba nnwale 7.71km na nke mbụ.Ogologo 4,843km nke West-East Gas Pipeline nke ahịrị eriri nke abụọ na-eji X80 steel ọkwa ọkpọkọ nwere dayameta nke 1219mm, nke na-abawanye nrụgide nnyefe gas na 12Mpa.N'ikwu okwu n'ozuzu, X80 ígwè bụ usoro okpukpu abụọ nke ferrite na bainite, X100 pipe steel bụ usoro bainite, na X120 ọkpọkọ ígwè bụ ultra-low carbon bainite na martensite.

Maka pipeline gas sitere n'okike, ike, ike na weldability bụ ihe nrịbama njikwa mma atọ kachasị mkpa [6].