Cryogenic pipelines yog concentrated nyob rau hauv distillation systems thiab kua cia backup systems. Raws li tus qauv, qhov ntsuas kub qis tshaj plaws ntawm austenitic stainless hlau 06Cr19Ni10 tuaj yeem ncav cuag -255 degree, thiab nws muaj lub zog zoo, plasticity, toughness thiab vuam kev ua tau zoo ntawm qhov kub thiab txias, thiab cov txheej txheem tsim khoom thiab kev teeb tsa yog qhov paub tab. 06Cr19Ni10 tuaj yeem siv los ua cov khoom siv rau cov kav dej cryogenic. Seamless kav yuav tsum ua raws li GB/T 14976-2012 "Stainless steel seamless steel kav rau kev thauj mus los" tus qauv, thiab welded steel kav yuav tsum ua raws li GB/T 12771-2019 "Stainless steel welded steel kav rau kev thauj mus los" txuj lossis HG/T 20537.3-1992 "Technical requirements for austenitic stainless steel welded steel pipes for chemical equipment" and HG/T 20537.{12}} "Technical requirements for austenitic stainless steel loj-inch welded steel kav rau cov khoom siv tshuaj lom neeg ". Thaum siv cov kav dej seamless steel ntawm -196 degree thiab siab dua, qhov ntsuas kub tsis zoo tuaj yeem raug zam. Cov welded pob qij txha ntawm cov kav hlau welded yuav tsum raug kuaj xyuas qhov kub thiab txias raws li GB/T 20801.{17}}.
Rau cov kav dej ua kua oxygen, raws li Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob, cov pa oxygen ua kua yog qhov nruab nrab oxidizing. Raws li kev faib cov raj xa dej siab hauv Tshooj 4 ntawm GB / T 20801.1-2020 "Pressure Pipeline Specification Industrial Pipeline Part 1: General Provisions", cov kav dej ua kua oxygen uas muaj cov kab nominal ntau dua lossis sib npaug li 50 thiab tsim siab tsawg dua 10MPa raug txiav txim raws li GC2[3]. Qhov no txawv ntawm cov kav dej siab ntawm cov pa oxygen siab. Txij li cov pa oxygen yog Class B flammable gas, qib siab ntawm cov pa xa hluav taws xob nrog cov qauv tsim siab dua lossis sib npaug rau 4MPa yog txiav txim siab raws li GC1.
Yog li ntawd, cov khoom siv cryogenic pipeline yuav tsum raug xaiv tsim nyog raws li qib siab cov kav dej.
