Cov xwm txheej no yuav tsum siv tawg-Cov pov thawj lub tshuab nqus tsev! Tsis txhob cia kev huv huv los ua kev nyab xeeb
Industrial nqus tsev vacuumyog cov khoom siv tu tshwj xeeb, thiab kev siv tsis raug tuaj yeem ua rau muaj kev pheej hmoo ntawm kev nyab xeeb. Ib qho xwm txheej txaus ntshai ib zaug tshwm sim hauv lub tsev khaws khoom tshuaj: tus neeg siv lub tshuab nqus tsev ntxhua khaub ncaws kom tshem tawm cov kua methanol residual, uas ua rau tawg thiab hlawv cov rhawv cia li peb vib nas this tom qab pib. Kev tshawb nrhiav pom tias cov hluav taws xob hluav taws xob tsim los ntawm lub cev muaj zog ntawm lub tshuab nqus tsev tsis tu ncua, thaum raug methanol vapor hauv huab cua, tam sim ntawd ua rau tawg.
Cov xwm txheej zoo sib xws tsis yog qhov tsis tshua muaj tshwm sim - piv txwv li, tawg tshwm sim los ntawm cov tshuab nqus tsev ntxhua khaub ncaws ntxuav cov plua plav hauv cov hmoov nplej, lossis hluav taws kub los ntawm cov tshuab nqus tsev nqus cov roj hauv cov chaw nres tsheb roj. Cov xwm txheej no yeej muaj tseebtawg ib puag ncig, thiab nyob rau hauv cov xwm txheej zoo li no, lub tshuab nqus tsev yuav tsum tau uatawg- pov thawj kho. Kev tawg- pov thawj lub tshuab nqus tsev tsis yog "siab- kev xaiv kawg," tab sisyuav tsum muaj kev ruaj ntseg- lawv lub luag haujlwm tseem ceeb yog rautshem tawm tag nrho cov khoom siv hluav taws xob taunyob rau hauv ib puag ncig flammable thiab tawg.
Yog li, hauv qhov xwm txheej twg yuav tsum tau siv tawg - pov thawj lub tshuab nqus tsev vacuum? Qhov tseem ceeb yog los txiav txim seb puas muaj cov pa taws kub hnyiab los yog tawg, vapors, lossis hmoov av nyob hauv ib puag ncig. Cov kab lus hauv qab no piav qhia txog kev siv cov xwm txheej thiab cov xwm txheej rau kev tawg- pov thawj lub tshuab nqus tsev.
1. Nkag siab txog cov ntsiab lus tseem ceeb: Vim li cas cov tshuab nqus tsev twj tso kua mis "Explode"?
Lub ntsiab lus ntawm tawg- pov thawj lub tshuab nqus tsev yog tias lawvtiv thaiv kev tawg, tsis yog lawvresistant rau tawg. Peb qhov kev pheej hmoo ignition ntawm cov tshuab nqus tsev zoo tib yam yog lub hom phiaj ntawm kev txhim kho:
Lub cev muaj zog- Cov pa taws tsim los ntawm kev sib txhuam ntawm cov pa roj carbon txhuam thiab cov commutator hauv cov tshuab nqus tsev tsis tu ncua yog qhov ua rau tawg.
hluav taws xob zoo li qub- Kev sib txhuam ntawm lub cev yas thiab plua plav tuaj yeem tsim hluav taws xob zoo li qub, uas tuaj yeem tso tawm thaum qhov hluav taws xob tsim, tshwj xeeb tshaj yog nyob rau hauv qhov chaw muaj plua plav.
Mechanical kev sib txhuam kub- Cov kub kub uas tsim los ntawm cov khoom xoob lossis tsis muaj lubrication tuaj yeem cuam tshuam cov khoom siv hluav taws xob.
Txhawm rau daws cov teeb meem no, tawg- pov thawj lub tshuab nqus tsev siv atriple kev ruaj ntseg tsim: brushless explosion-cov pov thawj motors los tiv thaiv sparks, conductive lub cev grounding kom tso tawm hluav taws xob zoo li qub, thiab meej yam clearances los tiv thaiv overheating. Qhov no yog vim li cas cov tshuab nqus tsev zoo tib yam tsis tuaj yeem hloov qhov tawg - cov qauv pov thawj hauv qhov chaw muaj kev phom sij.
2. Qhov Tseem Ceeb Scenario 1: Flammable thiab Explosive Gas/Vapor Environments (Zone 0, Zone 1, Zone 2)
Raws li covTsim Txoj Cai rau Kev Siv Hluav Taws Xob hauv Cov Hluav Taws Xob Hluav Taws Xob, qhov chaw nplaim hluav taws kub thiab tawg tau tawg / vapor ib puag ncig yog cais raws li Zone 0 (nruam), Zone 1 (ib ntus), thiab Zone 2 (lub sijhawm luv-). Explosion- pov thawj lub tshuab nqus tsev vacuumyuav tsumsiv rau hauv cov cheeb tsam no. Tej yam xwm txheej muaj xws li:
(1) Chemical/Pharmaceutical Workshops
Cov chaw tshuaj thiab chaw muag tshuaj feem ntau siv cov kuab tshuaj xws li methanol thiab acetone, uas nws cov vapors volatile tuaj yeem tawg thaum ignited. Hauv ib lub tsev muag tshuaj, lub tshuab nqus tsev tsis tu ncua tau siv los ntxuav cov acetone tawm, thiab hluav taws xob zoo li qub los ntawm kev sib txhuam ntawm cov hose tam sim ntawd ua rau lub vapor, ua rau lub rooj cob qhia kaw rau ib lub lim tiam.
Cov cheeb tsam no xav tautawg tag nrho- cov cav tov pov thawj, txhais tau tias tag nrho cov khoom xyaw - motors, keyboards, thiab suction nozzles - yuav tsum tau raws li kev tawg- cov qauv pov thawj. Piv txwv li, thaum ntxuav ethanol residue, ibIIB-gradetawg- qauv pov thawj (ethanol belongs rau IIB gas pab pawg) yuav tsum tau siv los xyuas kom meej tias tsis muaj qhov hluav taws kub.
(2) Chaw Nres Tsheb Roj / Roj Depots / Paint Booths
Roj av vapors thiab cov kuab tshuaj pleev xim tau yooj yim ignite. Nyob rau hauv ib rooj plaub, lub chaw nres tsheb roj tau siv lub tshuab nqus tsev vacuum los ntxuav cov roj ze ntawm lub tshuab hluav taws xob, thiab lub txim hluav taws xob los ntawm lub tshuab hluav taws xob hluav taws xob hluav taws xob, ua kom puas ob lub tshuab hluav taws xob.
Lub tshuab nqus tsev vacuum nyob rau hauv cov chaw no yuav tsum muajanti-kev tiv thaiv overflowtiv thaiv cov roj los ntawm kev nkag mus rau lub cev muaj zog, thiab yuav tsum yoghauv av kom raug. Txawm tias thaum lub sijhawm ua haujlwm ntawm lub xov tooj, yuav tsum siv cov xaim hauv av los tiv thaiv kev tsim hluav taws xob zoo li qub.
(3) Gas Lub tog raj kheej Cia / LPG Chaw
Tom qab cov roj ntsha los yog cov roj liquefied tso tawm, qhov sib tov sib xyaw ua ke tuaj yeem tsim thaum cov concentration nce mus txog 5% -15%. Nyob rau hauv ib lub tsev khaws khoom LPG, lub tshuab nqus tsev tsis tu ncua ignited pa roj uas muaj hluav taws xob, ua rau tawg ua rau cov phab ntsa puas.
Xws li ib puag ncig xav tausiab -qib tawg- pov thawjqauv, xws liIIC- qibLub tshuab nqus tsev vacuum haum rau cov roj liquefied. Suction fais fab yuav tsum nyob nruab nrab kom tsis txhob muaj cov khoom zoo li qub los ntawm cov huab cua ntau dhau, thiab kev tawg - cov ntaub ntawv pov thawj yuav tsum tau sim tsis tu ncua.
3. Qhov Tseem Ceeb Scenario 2: Flammable and Explosive Dust Environments (Zone 20, 21, 22)
Plua plav tawg tuaj yeem ua rau muaj zog dua li cov pa tawg - txawm tias tsis muaj teeb meem - saib hmoov zoo li hmoov nplej lossis hmoov txhuas tuaj yeem ua rau"dust huab explosion"thaum concentrated nyob rau hauv ib qho chaw kaw. Kev tawg- pov thawj lub tshuab nqus tsev yog qhov yuav tsum tau ua nyob rau hauv Zones 20 (cov plua plav txuas ntxiv), 21 (qee zaus plua plav), thiab 22 (lub sijhawm luv- plua plav).
(1) Khoom noj khoom haus (Cov hmoov nplej, hmoov nplej, qab zib hmoov)
Cov hmoov nplej thiab cov chaw ua biscuit feem ntau ntsib cov plua plav loj heev. Ib lub tshuab hmoov nplej siv lub tshuab nqus tsev tsis tu ncua, thiab cov pa taws los ntawm lub cev muaj zog ua rau cov plua plav tawm hauv lub thoob ntim khoom, ua rau cov saw tawg tawg uas ua rau lub rhiav.
Nyob rau hauv xws li ib puag ncig, lub tshuab nqus tsev yuav tsum muajanti-cov khoom siv plua plav zoo li qubthiabtsis muaj-tuag- cov qauv tsimtiv thaiv plua plav txhuam thiab ignition. Nws kuj pom zoo kommoisten thiab kho cov plua plavua ntej ntxuav kom tiv thaiv kev tsim ntawm "plua plav huab."
(2) Hlau ua cov nroj tsuag (Aluminium, Magnesium, Zinc Hmoov)
Cov hmoov hlau xws li txhuas thiab magnesium yog cov nplaim taws thiab tuaj yeem ua rau tus kheej - ignite thaum raug dej. Nyob rau hauv ib lub Hoobkas pib qhov chaw, lub cev muaj zog ignited aluminium plua plav, hlawv cov khoom tseem ceeb.
Cov cheeb tsam no xav taustainless hlau nqus tsev vacuumkom tsis txhob muaj kev sib txhuam sparks thiab yuav tsum tau nruab nrogplua plav concentration xyuas cov cuab yeejuas cia li kaw thaum qib siab dhau lawm. Rau cov plua plav tshwj xeeb xws li magnesium hmoov,inert roj tiv thaivyuav tsum tau siv los tiv thaiv spontaneous combustion.
(3) Coal Powder / Carbon Black ua qhov chaw
Ntawm cov chaw nres tsheb thee hloov chaw thiab cov chaw ua haujlwm ntim cov pa roj carbon dub, tawg tuaj yeem tshwm sim thaum cov hmoov av ntau txog 45 g / m³. Hauv ib lub mine thee, qhov paug tawm zoo li qub thaum lub tshuab nqus tsev ua rau tawg ua rau cov khoom puas.
Lub tshuab nqus tsev vacuum rau cov chaw no yuav tsum sivtawg- pov thawj foobtiv thaiv kom tsis txhob muaj plua plav nkag mus rau hauv lub cev muaj zog, thiab atshwj xeeb grounding systemyuav tsum tau txuas nrog kom tso tawm hluav taws xob zoo li qub.
4. Qhov Tseem Ceeb Scenario 3: Yuav Tsum Tau Ua Rau Kev Lag Luam Tshwj Xeeb
Txawm tias zoo li tsis tshua muaj - kev lag luam muaj kev pheej hmoo, cov kev cai yuav xav tau kev tawg- cov khoom pov thawj los tshem tawm cov kev phom sij:
(1) Cov tub rog / mos txwv Workshops
Cov hmoov phom residue thiab cov plua plav tawg hauv cov mos txwv cov chaw tsim khoom yog qhov rhiab heev. CovTxoj Cai Tswjfwm Kev Nyab Xeeb rau Kev Ua Haujlwm Tsis Txaus Siab hauv Kev Lag Luam Tub Rogxav tau cov cuab yeej ntxuav kom tau raws li kev tawg- cov qauv pov thawj ntawmEx d IIB T4los yog siab dua.
Cov tshuab nqus tsev nqus tsev vacuum no yuav tsum tau xeem tub rog tshwj xeeb, thiab lawv cov plua plav yuav tsum yoganti-zoo li qub thiab cuam tshuam-resistanttiv thaiv sparks thaum tuav.
(2) Tsev Kho Mob Anesthesiology thiab Pharmacy Department
Flammable gases xws li ether muaj nyob rau hauv tshuaj loog, thiab cawv thiab acetone vapors tej zaum yuav muaj nyob rau hauv cov chaw muag tshuaj. Nyob rau hauv ib lub tsev kho mob, sparks los ntawm lub tshuab nqus tsev vacuum ignited ether vapor nyob rau hauv chav ua hauj lwm pem teb.
Kev tawg- pov thawj lub tshuab nqus tsev ntawm no yuav tsum sib npaugkev nyab xeeb thiab huv si: stainless hlau lub cev kom yooj yim tshuaj tua kab mob, tshuaj tua kab mob nozzles los tiv thaiv kev sib kis -, thiab tsawg kawgIIB Explosion Protection Rating.
5. Zam Kev Tsis Txaus Siab: Tsis txhob yuam kev "Pseudo Explosion-Cov pov thawj" rau kev nyab xeeb tiag
Muaj ntau yam xwm txheej tshwm sim los ntawm kev siv cov khoom tsis muaj pov thawj. Txhawm rau paub qhov tawg tiag tiag - pov thawj cov tshuab nqus tsev vacuum, nco ntsoov peb lub ntsiab lus tseem ceeb:
Xyuas daim ntawv pov thawj- Cov khoom muaj tseeb tuaj nrog cov nom CNEX lossis lwm txoj cai- tawm daim ntawv pov thawj qhia qhov tawg- qib pov thawj.
Tshawb xyuas cov ntsiab lus tseem ceeb- Lub cev muaj zog yuav tsum tsis muaj txhuam thiab tawg- pov thawj, lub cev yuav tsum muaj qhov chaw nres tsheb hauv av, thiab cov plua plav hauv av yuav tsum muaj kev cuam tshuam.
Ua raws qib kom raug- Kev tawg- qib pov thawj ua raws IIA < IIB < IIC. Rau kev ntxuav methanol, siv IIB; Rau cov roj liquefied, siv IIC. Yog tias qib tsis txaus, nws yogtsis tawg tiag tiag - pov thawj.
Txawm tias muaj cov cuab yeej tsim nyog, kev ua haujlwm tsis raug tseem ua rau muaj kev pheej hmoo - piv txwv li, siv tawg- pov thawj lub tshuab nqus tsev tsis muaj av, lossis siv cov khoom siv tsis tu ncua hauv qhov chaw tawg. Kev tawg- cov khoom pov thawj tsim ib kab ntawm kev tiv thaiv, tab sisqhov cua thiab static tshem tawmyog ib yam tseem ceeb rau kev nyab xeeb.
Xaus: Kev nyab xeeb tseem ceeb tshaj qhov yooj yim
Tus nqi tseeb ntawm kev tawg- pov thawj lub tshuab nqus tsev yog ua kom ntseeg tau tiaskev huv thiab kev nyab xeeb ua ke. Nyob rau hauv ib puag ncig uas muaj cov khoom siv hluav taws xob los yog tawg, siv qhov tawg - pov thawj lub tshuab nqus tsev tsis yog xaiv tau - nws yog ib qhokev ruaj ntseg puag. Txuag cov nqi los ntawm kev hla qhov kev tiv thaiv no tuaj yeem ua rau tawg, hluav taws kub, lossis txawm tias raug mob.
Nco ntsoov txoj cai ntawm tus ntiv tes xoo:
Yog hais tias ib puag ncig muaj cov khoom (gass, kua, los yog hmoov av) uas tuaj yeem ignite thaum raug hluav taws, muaj kev tawg - pov thawj lub tshuab nqus tsev vacuumyuav tsumsiv. Tsis txhob cia kev yooj yim lossis raug nqi -txiav tig tu mus rau qhov muaj kev phom sij -kev nyab xeeb ib txwm los ua ntej efficiency.
