Dab tsi yog qhov tshwj xeeb ntawm 2, 4 thiab 6 cov ntsiab lus hauv cov yeeb nkab valve fittings? Oxygen valve, yeeb nkab valve, valve combustion yog vim li cas tsom xam

Dab tsi yog qhov tshwj xeeb ntawm 2, 4 thiab 6 cov ntsiab lus hauv cov yeeb nkab valve fittings? Oxygen valve, yeeb nkab valve, valve combustion yog vim li cas tsom xam

Yuav ua li cas koj sib txawv qhov ntau thiab tsawg valve? Puas yog "feeb", "inches," lossis "DN ..."? Koj puas paub nws txhais li cas?
Ua ntej tshaj plaws, cia peb nrov lub hauv paus chiv keeb ntawm "inch":
nti (inch, abbreviated as in.), hauv Dutch, lub ntsiab lus tseem ceeb yog tus ntiv tes xoo, ib nti yog qhov ntev ntawm tus ntiv tes xoo, tau kawg, qhov ntev ntawm tus ntiv tes xoo kuj txawv.
Lub hnub yeej tsis teem. Lub tebchaws Askiv tau zoo heev. Lub teb chaws muaj hwj chim thiab muaj lub suab. Nyob rau hauv lub xyoo pua 14th, King Edward II tau tshaj tawm "tus qauv kev cai lij choj". Raws li txoj cai, qhov ntev ntawm peb cov nplej nplej loj hauv ib kab yog ib nti (txog 25.4 hli).
Peb tau mus rau lub ntsiab lus, feem ntau mus rau lub khw muag khoom kho vajtse los yuav lub valve lossis cov yeeb nkab, sib koom ua ke, thiab lwm yam, tsis nkag siab tus phooj ywg coj cov qauv mus yuav ncaj qha, txiav txim siab cov lus piav qhia dav dav ntawm cov lus qhia tshwj xeeb, rau ob peb feeb lossis ob peb ntiv tes. , tiag tiag pom cov dej valve thiab cov yeeb nkab sib txuas lub cev lossis cim rau ntawm cov khoom ntim khoom, xws li 1/2 ', 3/4', 1 ', DN15 thiab lwm yam.
Raws li qhia hauv qab no: Cov dej kub thiab dej txias txoj cai-lub kaum sab xis rau chav dej ntxhua khaub ncaws, loj DN15.
Nyob zoo cov phooj ywg, yog tias koj xav nkag siab thiab kawm txog qhov tshwj xeeb thiab qhov loj ntawm cov li qub no, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov hauv qab no:
Basic formula conversion: 1 nti ≈25.4 mm = 8 points (points for short)
Yog li: 1 nti = 1/8 '(hauv) ≈3.175mm
2 nti = 1/4 '(inch)
4" = 1/2" (inch)
6" = 3/4" (hauv)
(Rau lub hom phiaj kev nco, ob peb feem ntawm ib nti feem ntau yog muab faib ua 8 kom tau qhab nia.)
Cov duab hauv qab no qhia txog kev sib raug zoo ntawm "feeb" thiab "inch":
Nyob rau hauv lub neej, feem ntau siv valve yog 1/2 '(4 valve), qee zaum sau npe raws li DN15, qhov tseeb, cov lus qhia tshwj xeeb yog tib yam, tab sis daim ntawv lo sib txawv.
Yog li peb feem ntau hu 4 ntsiab lus thiab 6 ntsiab lus thiab 1 nti dej valve lossis cov yeeb nkab dej, 4 ntsiab lus, 6 ntsiab lus, 1 nti yog hais txog lub valve dej lossis dej yeeb nkab txoj kab uas hla ntawm British system, lub npe tag nrho yog British.
Raws li qhia hauv qab no: 1/2 nti yog 4 taw tes valve (DN15) nominal txoj kab uas hla ntawm 15, xov txoj kab uas hla ntawm 19 hli.
Unit: mm
Qhov sib txuam silk yog qhia raws li hauv qab no:
Qee lub sij hawm txawm tias lub cev lub cev tsis tau cim nrog cov lus qhia tshwj xeeb, peb tuaj yeem siv tus pas ntsuas los ntsuas qhov ntsuas ntawm lub valve, feem ntau 4 valve rau cov xov sab hauv feem ntau txoj kab uas hla ntawm 18 ~ 20mm, yog tias cov xov sab nraud tuaj yeem ntsuas cov xov kab. , tib.
Daim duab hauv qab no qhia txog cov faucets rau lub tshuab ntxhua khaub ncaws uas feem ntau siv hauv tsev neeg:
Cov duab hauv qab no yog 3/4 ', tseem hu ua 6 valve (DN20), nominal txoj kab uas hla ntawm 20, feem ntau yog hais txog 24 hli hauv txoj kab uas hla.
Unit: mm
Daim duab hauv qab no qhia txog txoj hauv kev ntsuas qhov ntsuas kwv yees li 4 thiab 6 taw tes valve:
Los ntawm cov saum toj no, ntau tus neeg koom tes me me yuav tsis meej pem, valve specification DN txhais tau tias yog dab tsi, qhov tseeb, DN valve specification DN20 yog nominal diam cim, nominal txoj kab uas hla (tseem hu ua txhais tau tias outs>
Yog li DN tsis yog sab nraud lossis sab hauv txoj kab uas hla, tab sis nws nyob ze rau hauv txoj kab uas hla. Cov chav kawm tsis tshua muaj siab, cov phab ntsa me me, DN tsawg dua li lub taub sab hauv; Rau cov chav kawm siab, cov phab ntsa tuab yog loj, thiab DN yog ntau dua li lub puab kab. DN ** Nominal txoj kab uas hla, uas yog nyob rau hauv millimeters, tab sis nominal txoj kab uas hla yog lub nominal loj, tsis yog qhov loj ntawm .
Piv txwv li, tus tsim ntawm cov yeeb nkab lossis lub valve suav tias cov yeeb nkab nrog ib txoj kab uas hla ntawm 102 hli thiab phab ntsa thickness ntawm 3 hli yuav tsum tau, thiab cov yeeb nkab sab nraud yog 108 hli. Raws li tus qauv tsim ntawm cov yeeb nkab steel, tsuas muaj cov yeeb nkab zoo li no xwb. Nyob rau hauv rooj plaub no, cov yeeb nkab nrog ib txoj kab uas hla ntawm 102 hli yuav tsum tau muab cais raws li nominal txoj kab uas hla ntawm qhov ze tshaj plaws, uas yog, lub valve tsim yog DN100. Obviously lub nominal loj yuav me dua lub puab txoj kab uas hla. Hauv lwm qhov xwm txheej, cov yeeb nkab nrog lub taub sab nraud ntawm 108mm tseem siv. Vim yog lub siab siab, phab ntsa thickness yuav tsum yog 6 hli, yog li lub puab txoj kab uas hla ntawm cov yeeb nkab yog 96. Lub sij hawm no, lub valve siv tseem yog DN100, thiab lub nominal loj yog ntau dua li lub puab kab uas hla ntawm lub kaw yeeb nkab. .
Cov duab hauv qab no yog 1 '(hauv) DN25 valve, feem ntau tsis hu ua 8 valve, nominal txoj kab uas hla yog 25, xov txoj kab uas hla yog li 30 hli, thiab lwm yam:
Daim duab hauv qab no qhia txog 1.2 '(hauv.) DN32 valve nrog nominal txoj kab uas hla ntawm 32 thiab threaded puab txoj kab uas hla ntawm kwv yees li 39 hli.
Daim duab hauv qab no qhia tau hais tias 1.5 '(hauv.) DN40 valve, nominal txoj kab uas hla yog 40, daim ntawv txoj kab uas hla yog li 46 hli
Hauv qab no yog 2 '(hauv.) DN50 valve nrog nominal txoj kab uas hla ntawm 50 thiab sab hauv xov txoj kab uas hla ntawm kwv yees li 56 hli
Cov duab hauv qab no qhia txog kev sib raug zoo ntawm cov yeeb nkab inch thiab nominal loj:
Los ntawm cov lus piav qhia saum toj no piav qhia ntxaws ntxaws, kev tshawb fawb tob, cov neeg koom tes me yuav tsum nkag siab txog cov ntsiab lus ntawm lub neej dej valve, "cov ntsiab lus" thiab "inch" ntawm lub ntsiab lus ntawm nws.
Oxygen valve, yeeb nkab valve, valve combustion yog vim li cas tsom xam
Oxygen valve, yeeb nkab valve, valve combustion yog vim li cas tsom xam
Nrog rau kev siv cov pa oxygen ntau ntxiv, cov neeg siv cov pa oxygen loj tau siv cov pa xa hluav taws xob xa mus. Vim yog cov kav dej ntev ntev, kev faib dav dav, ua ke nrog lub nrawm qhib lossis kaw lub valve, ua rau cov pa oxygen pipeline thiab valve combustion teeb meem tshwm sim los ntawm lub sijhawm, yog li, *** kev soj ntsuam ntawm cov pa xa hluav taws xob thiab lub qhov rooj txias uas twb muaj lawm zais cia, kev phom sij, thiab siv cov kev ntsuas sib xws yog qhov tseem ceeb.
Ua ntej, ntau cov pa oxygen pipeline, valve combustion ua rau tsom xam
1. Cov xeb, plua plav thiab vuam slag nyob rau hauv cov kav dej sib txhuam nrog cov phab ntsa sab hauv ntawm lub raj xa dej lossis qhov chaw nres nkoj valve, uas ua rau kub kub combustion.
Qhov teeb meem no muaj feem xyuam rau hom impurities, particle loj thiab airflow ceev. Hlau hmoov yog ib qho yooj yim rau hlawv nrog oxygen, thiab qhov finer particle loj, qhov qis ntawm ignition point; Qhov nrawm nrawm dua, qhov yuav kub hnyiab tau ntau dua.
2. Muaj roj, roj hmab thiab lwm yam khoom uas tsis tshua muaj ignition point nyob rau hauv lub pipeline los yog valve, uas yuav ignite nyob rau hauv lub cheeb tsam kub.
Lub ignition point ntawm ob peb combustibles nyob rau hauv oxygen (ntawm atmospheric siab);
Lub npe roj Ignition point (℃)
Lubricating roj 273 ~ 305
Vulcanized fiber ntau 304
Roj hmab 130 ~ 170
Fluorine roj hmab 474
Sib txuas nrog 392 b
Teflon 507
3. Qhov kub thiab txias generated los ntawm adiabatic compression ua rau combustibles hlawv
Piv txwv li, ua ntej lub valve yog 15MPa, qhov kub thiab txias yog 20 ℃, thiab lub siab tom qab lub valve yog 0.1MPa. Yog tias lub valve qhib sai, qhov kub ntawm oxygen tom qab lub valve tuaj yeem ncav cuag 553 ℃ raws li cov qauv adiabatic compression, uas tau mus txog lossis tshaj qhov hluav taws kub ntawm qee yam khoom.
4. Lub ignition point txo ntawm combustible khoom nyob rau hauv siab siab ntshiab oxygen yog inducement ntawm oxygen pipeline valve combustion
Oxygen pipeline thiab valve hauv siab siab ntshiab oxygen, qhov kev pheej hmoo yog qhov zoo heev, qhov kev sim tau ua pov thawj tias qhov hluav taws kub ntawm qhov tuaj yeem hloov pauv mus rau square ntawm lub siab, uas ua rau muaj kev hem thawj rau cov pa oxygen pipeline thiab valve.
Qhov thib ob, kev tiv thaiv
1. Tus qauv tsim yuav tsum ua raws li cov cai thiab cov qauv tsim
Tus qauv tsim yuav tsum ua raws li 1981 Ministry of Metallurgy muab los ntawm Hlau thiab Hlau Enterprise oxygen yeeb nkab network ntawm ntau cov kev cai, nrog rau cov pa oxygen thiab cov roj hluav taws xob muaj feem xyuam rau kev nyab xeeb kev cai (GB16912-1997), "Oxygen chaw nres tsheb tsim code" (GB50030- 91) thiab lwm yam kev cai thiab cov qauv.
(1) Qhov loj ntawm cov pa oxygen hauv cov yeeb nkab steel yuav tsum ua raws li cov lus hauv qab no.
Loj txaus tus nqi ntawm oxygen nyob rau hauv carbon steel yeeb nkab:
Ua haujlwm siab (MPa) 0.1 0.1 ~ 0.6 0.6 ~ 1.6 1.6 ~ 3.0
Flow tus nqi (m / s) 20, 13, 10, 8
(2) Txhawm rau tiv thaiv hluav taws, ib ntu ntawm tooj liab hauv paus alloy lossis stainless hlau yeeb nkab nrog qhov ntev tsis pub tsawg dua 5 npaug ntawm cov yeeb nkab txoj kab uas hla thiab tsis pub tsawg dua 1.5m yuav tsum tau txuas nrog tom qab cov pa valve.
(3) Lub luj tshib thiab lub taub hau bifurcation yuav tsum tau teem kom tsawg li ntau tau hauv cov kav dej pa oxygen. Lub luj tshib ntawm cov kav dej pa oxygen nrog kev ua haujlwm siab siab dua 0.1MPa yuav tsum tau ua los ntawm stamped valve hom flange. Lub airflow kev taw qhia ntawm lub taub hau bifurcation yuav tsum yog 45 mus rau 60 lub ces kaum los ntawm cov kev taw qhia ntawm lub ntsiab airflow.
(4) Nyob rau hauv lub pob tw welding ntawm concave-convex flange, tooj liab vuam hlau yog siv los ua O-ring, uas yog ib tug txhim khu kev qha sealing daim ntawv ntawm oxygen flange nrog flammability.
(5) Lub raj xa hluav taws xob yuav tsum muaj cov khoom siv hluav taws xob zoo, qhov kev tiv thaiv hauv av yuav tsum tsawg dua 10, qhov kev tiv thaiv ntawm flanges yuav tsum tsawg dua 0.03.
(6) Qhov kawg ntawm qhov kawg ntawm cov pa oxygen tseem ceeb hauv kev cob qhia yuav tsum tau ntxiv nrog cov yeeb nkab tso tawm kom yooj yim rau kev tshem tawm thiab hloov cov pa oxygen pipeline. Ua ntej lub kav dej ntev oxygen nkag mus rau hauv lub regulating valve nyob rau hauv lub rhiav, lub lim yuav tsum tau teem.
2. Kev ceev faj txog kev teeb tsa
(1) txhua qhov chaw nyob rau hauv kev sib cuag nrog oxygen yuav tsum nruj me ntsis degreased, degreased nrog cua qhuav los yog nitrogen tsis muaj roj.
(2) Vuam yuav tsum yog argon arc vuam lossis arc vuam.
3. Kev ceev faj rau kev ua haujlwm
(1) Thaum hloov thiab tawm ntawm cov pa oxygen valve, nws yuav tsum tau nqa tawm maj mam. Tus neeg teb xov tooj yuav tsum sawv ntawm sab ntawm lub valve thiab qhib nws ib zaug hauv qhov chaw.
(2) Nws yog txwv tsis pub siv cov pa oxygen los txhuam cov raj xa dej lossis siv cov pa oxygen los kuaj cov pa tawm thiab siab.
(3) Kev ua haujlwm ntawm daim pib ua haujlwm, ua ntej ntawm kev ua haujlwm ntawm lub hom phiaj, txoj hauv kev, cov xwm txheej los ua kom cov lus piav qhia ntxiv thiab cov kev cai.
(4) Kev ceev cov pa oxygen li qub nrog txoj kab uas hla ntau dua 70mm tso cai ua haujlwm tsuas yog thaum lub siab sib txawv ntawm lub hauv ntej thiab nraub qaum ntawm lub valve raug txo kom tsawg dua 0.3MPa.
4. Kev ceev faj rau kev saib xyuas
(1) Cov raj xa hluav taws xob yuav tsum tau kuaj xyuas thiab tswj tsis tu ncua, xeb tshem tawm thiab pleev xim, txhua 3 mus rau 5 xyoos.
(2) Kev nyab xeeb valve thiab ntsuas siab ntawm lub raj xa dej yuav tsum tau kuaj xyuas tsis tu ncua, ib xyoos ib zaug.
(3) Txhim kho cov khoom siv hauv av.
(4) Ua ntej ua haujlwm kub, hloov thiab ntxuav yuav tsum tau ua. Thaum cov pa oxygen hauv cov pa cua tshuab yog 18% ~ 23%, nws tsim nyog.
(5) Valve, flange, gasket thiab yeeb nkab, kev xaiv cov yeeb nkab haum yuav tsum ua raws li "Oxygen thiab cov kev cai ntawm kev nyab xeeb roj" (GB16912-1997) cov kev cai cuam tshuam.
(6) Tsim cov ntaub ntawv technical, tsheb ciav hlau ua haujlwm, overhaul thiab tu cov neeg ua haujlwm.
5. Lwm yam kev ntsuas kev ruaj ntseg
(1) Txhim kho qhov tseem ceeb ntawm kev tsim kho, kev saib xyuas thiab kev ua haujlwm ntawm cov neeg ua haujlwm kom muaj kev nyab xeeb.
(2) txhim kho kev ceev faj ntawm cov neeg ua haujlwm tswj hwm.
(3) Kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis.
(4) Txuas ntxiv txhim kho cov phiaj xwm xa oxygen.
Xaus:
Qhov laj thawj vim li cas lub rooj vag valve raug txwv yog qhov tseeb vim tias qhov sib khi ntawm lub rooj vag valve nyob rau hauv cov txheeb ze txav (uas yog, lub valve hloov) yuav ua rau puas puas tsuaj vim kev sib txhuam, ib zaug puas lawm, muaj hlau hmoov los ntawm sealing nto. , xws li cov khoom zoo ntawm cov hmoov hlau yog yooj yim rau hlawv, qhov no yog qhov txaus ntshai tiag tiag.
Nyob rau hauv qhov tseeb, cov pa oxygen pipeline yog txwv tsis pub mus rau lub rooj vag valve, lwm yam nres li qub muaj xwm txheej, lub sealing nto ntawm lub nres valve yuav puas, raws li tej zaum yuav txaus ntshai, kev paub ntawm ntau lub lag luam yog hais tias cov pa pipeline tag nrho siv tooj liab alloy valve. , tsis yog carbon steel, stainless hlau valve.
Copper alloy valve muaj qhov zoo ntawm cov neeg kho tshuab muaj zog, hnav tsis kam, kev nyab xeeb zoo (tsis tsim hluav taws xob zoo li qub), yog li qhov laj thawj tiag tiag yog vim qhov kev sib khi ntawm lub rooj vag valve yog ib qho yooj yim hnav thiab tsim cov hlau yog lub ntsiab culprit, xws li rau qhov poob ntawm kev sib khi tsis yog qhov tseem ceeb.
Qhov tseeb ntau lub rooj vag ntawm cov pa oxygen pipeline tsis yog siv los ua kev sib tsoo, feem ntau tshwm sim ntawm ob sab ntawm lub valve siab sib txawv loj dua, lub valve qhib sai dua, ntau yam xwm txheej kuj qhia tau tias qhov hluav taws kub thiab roj yog qhov ua rau qhov kawg, lov tes taw. lub rooj vag valve tsuas yog txhais tau tias tswj cov roj, thiab tsis tu ncua lub hom phiaj ntawm xeb, degreasing, txwv cov roj yog tib yam. Raws li kev tswj hwm tus nqi ntws, ua txoj haujlwm zoo ntawm electrostatic grounding yog tshem tawm qhov hluav taws kub. Tus kheej xav tias cov khoom siv valve yog qhov tseem ceeb, ntawm cov yeeb nkab hydrogen kuj tshwm sim cov teeb meem zoo sib xws, cov lus qhia tshiab muaj cov lus yuav lov tes taw lub rooj vag tshem tawm, yog ib daim ntawv pov thawj, tus yuam sij los nrhiav qhov laj thawj, ntau lub tuam txhab tsuas yog tsis hais txog kev khiav hauj lwm siab, raug yuam. los ntawm cov tooj liab alloy valve, tab sis raws li qee qhov xwm txheej tshwm sim, yog li tswj cov hluav taws kub thiab roj, ua tib zoo saib xyuas, Qhov tseem ceeb yog kom nruj txoj hlua ruaj ntseg. - Muab los ntawm Sanjing Valve Technology Department