Thaum lub sij hawm tsim kho, lub raj mis oxygen thiab acetylene yuav tsum khaws cia 10 meters deb ntawm qhov hluav taws kub, thiab qhov kev ncua deb ntawm cov pa oxygen thiab acetylene fwj yuav tsum khaws cia ntau tshaj 5 meters.Qhov ntev ntawm thawj xaim (them xaim) ntawm lub tshuab vuam yuav tsum tsawg dua 5m, thiab qhov ntev ntawm cov xaim thib ob ( vuam bar hlau) yuav tsum tsawg dua 30m.Cov xaim yuav tsum tau nias kom ruaj khov thiab yuav tsum tau muab lub hau tiv thaiv kev ruaj ntseg.Lub vuam hlau yuav tsum muab ob npaug rau hauv qhov chaw.Cov kav hlau hlau, hlau scaffolding, ntsia hlau thiab cov qauv steel tuav yuav tsum tsis txhob siv los ua cov xaim hauv av ntawm lub voj voog.Tsis muaj kev puas tsuaj rau lub vuam pas nrig, zoo rwb thaiv tsev.
Dissolved acetylene cylinder nyob rau hauv cov txheej txheem ntawm ntau lawm (tom qab no hu ua acetylene cylinder) thiab oxygen foob pob yog siv dav hauv vuam thiab txiav, thiab feem ntau siv tib lub sijhawm, cov pa oxygen rau combustion gas, acetylene rau cov pa roj, oxygen thiab acetylene. thiab cov ris tsho hauv lub nkoj thauj khoom siab, raws li txoj kev siv, muaj qee qhov teeb meem nyob rau hauv qhov sib txawv, xws li acetylene cylinder nrog oxygen foob pob teeb nyob rau hauv tib qhov chaw, Tsis muaj kev nyab xeeb deb;Oxygen lub tog raj kheej thiab roj sib cuag, acetylene lub tog raj kheej kab rov tav dov, tsis ntsug static muab tso rau hauv kev siv;Acetylene lub raj mis saum npoo kub hauv ntau dua 40 ℃, lub caij ntuj sov qhib ua haujlwm yam tsis muaj npog;Oxygen, acetylene fwj tsis nyob rau hauv raws li cov kev cai ntawm residual siab, cov teeb meem no, tau coj mus rau qhov tshwm sim ntawm ib tug xov tooj ntawm casualties.Vim nws yog yaj acetylene, muaj acetone nyob rau hauv lub tog raj kheej.Yog tias lub kaum sab xis qis dua 30 degrees, thaum lub valve qhib (thaum siv), acetone tuaj yeem ntws tawm thiab sib xyaw nrog huab cua los tsim cov khoom tawg.Qhov txwv tawg yog 2.55% rau 12.8% (ntim).Oxygen thooj voos kheej kheej muaj cov pa oxygen siab, thiab muaj cov yam ntxwv ntawm lub cev thiab tshuaj lom neeg tsis zoo: lub cev muaj zog: tom qab cov pa oxygen compressed thiab lub siab nce, nws zoo li sib npaug nrog cov huab cua nyob ib puag ncig.Thaum lub siab sib txawv ntawm oxygen thiab atmospheric siab loj dua, qhov kev nyiam no kuj loj dua.Thaum qhov sib txawv ntawm qhov sib txawv loj heev mus txog qhov sib npaug ntawm lub sijhawm luv luv ntawm qhov chaw loj, nws tsim qhov feem ntau hu ua "kev tawg".Yog tias qhov kev sib npaug no tau ua tiav nyob rau lub sijhawm ntev ntawm lub sijhawm los ntawm cov pores me me, lub "jet" yog tsim.Ob leeg tuaj yeem muaj qhov tshwm sim loj.Chemical yam.Vim tias cov pa oxygen yog cov khoom siv hluav taws xob combustion, ib zaug muaj cov khoom siv hluav taws xob thiab hluav taws kub, kev kub ntxhov tuaj yeem tshwm sim, thiab txawm tias hluav taws tawg.
1, "Dissolved acetylene lub tog raj kheej txoj cai tshuaj xyuas kev nyab xeeb" kab lus 50 acetylene lub raj mis siv cov kev cai "thaum siv lub tog raj kheej oxygen thiab acetylene lub raj mis, yuav tsum sim kom tsis txhob ua ke; Thiab qhib hluav taws deb feem ntau tsis pub tsawg tshaj 10 meters";Tsis muaj kev piav qhia meej txog qhov kev ncua deb ntawm ob lub raj mis.
2, "Vuam thiab txiav kev nyab xeeb" GB9448-1999: nyob rau hauv kev siv nrog qhov kev ncua deb ntawm lub ignition point yog ntau tshaj 10 meters, tab sis qhov kev ncua deb ntawm oxygen thiab acetylene fwj nyob rau hauv Tuam Tshoj zoo li tsis meej.
3. Tshooj 552 ntawm Kev Tswj Xyuas Kev Nyab Xeeb Kev Nyab Xeeb Kev Nyab Xeeb Kev Ua Haujlwm (Cov Cuab Yeej Siv Hluav Taws Xob thiab Cov Khoom Siv Hluav Taws Xob) xav kom "qhov kev ncua deb ntawm lub tog raj kheej oxygen hauv kev siv thiab acetylene cylinders yuav tsum tsis pub tsawg dua 8 meters".
4. "Gas welding (Txiav) Cov Cai Kev Nyab Xeeb Kev Nyab Xeeb" nyob rau hauv qhov thib ob tau hais tias "cov thooj voos kheej kheej, acetylene cylinders yuav tsum muab tso rau nyias, qhov sib nrug yuav tsum tsis pub tsawg dua 5 meters. Standard cog kev nyab xeeb code rau Kev Ua Haujlwm Hluav Taws Xob HG 23011-1999 rau Kev lag luam tshuaj lom neeg ntawm Tuam Tshoj.
Lub sij hawm xa tuaj: Plaub Hlis-07-2022