1. Ntau lawm tej yam kev mob ntawm oxygen valve
GB16912-2008 "Txoj Cai Kev Nyab Xeeb Kev Nyab Xeeb rau Kev Tsim cov pa oxygen thiab cov pa cuam tshuam los ntawm kev sib sib zog nqus khov" ua rau cov kev cai hauv qab no ntawm kev xaiv cov pa oxygen li qub.
(1) Lub valve ntawm cov pa xa hluav taws xob yuav tsum yog cov pa oxygen valve thiab yuav tsum ua raws li cov cai hauv qab no:
ib. Oxygen pipelines nrog kev ua haujlwm siab tshaj 0.1MPa yog txwv tsis pub siv lub rooj vag li qub;
b. Los ntawm txhais tes oxygen li qub uas nws lub siab nominal siab dua los yog sib npaug rau 1.
c. Kev xaiv ntawm cov khoom siv valve yuav tsum ua tau raws li qhov
Valve xaiv cov khoom xav tau
Ua haujlwm siab P/MPa Khoom P Tsawg dua lossis sib npaug rau 0.6
1. Lub valve thiab valve cover yog ua los ntawm malleable hlau, ductile hlau los yog cam khwb cia hlau
2. Lub qia valve yog ua los ntawm stainless hlau
3. Lub valve disc yog ua los ntawm stainless hlau
①0.6
②P>10 xaiv tooj liab alloy), npib tsib xee thiab npib tsib xee-raws li alloy.
Lus Cim: 1. Cov khoom siv ntawm lub siab los yog ntws regulating valve uas nws ua hauj lwm siab siab tshaj 0.1MPa yuav tsum stainless hlau los yog tooj liab alloy los yog ib tug ua ke ntawm cov saum toj no ob.
2. Lub sealing ntim ntawm lub valve yuav tsum yog ua los ntawm polytetrafluoroethylene los yog graphite hloov tau.
(2) Rau cov pa oxygen li qub uas nws lub siab yog siab dua los yog sib npaug rau 1.0MPa thiab nws lub npe loj dua los yog sib npaug rau DN150 txoj kab uas hla, pneumatic tej thaj chaw deb tswj li qub yuav tsum tau siv.
Qhov thib ob, hom oxygen valve
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3. Cov yam ntxwv ntawm OxygenValve
① Lub qhov hloov pauv ntawm lub ntiaj teb valve txav ncaj nraim ntawm lub rooj zaum valve, thiab lub nra ntawm nws lub sealing nto tuaj yeem tswj tau los ntawm lub valve qia nrog trapezoidal kis xov. Nrog kev pab los ntawm kev tsim ntawm lub valve disc thiab lub rooj zaum valve, kev sib txhuam quab yuam ntawm lub valve disc ntawm lub rooj zaum valve tuaj yeem yog me me los yog tsis txawm tias thaum lub sijhawm txav mus los, uas daws cov teeb meem kev sib txhuam ntawm cov hlua khi thaum qhib lossis kaw lub valve.
② Hauv kev tsim qauv ntawm lub ntiaj teb valve, qhov ntws ntawm qhov nruab nrab yuav tsum tau txiav txim siab ua kom nws ntws zoo thiab txo qhov muaj zog cuam tshuam tsim. Qhov saum npoo ntawm cov kab noj hniav sab hauv ntawm cov dej ntws los ntawm qhov ntws ntawm cov pa nruab nrab ntawm cov pa oxygen yuav tsum yog du, du, tsis muaj npoo thiab cov fab, cov fab ntse, thiab tsis muaj qhov tsis sib xws. Tsis muaj qhov hloov pauv tam sim ntawd, lub kaum sab xis ntawm lub sab hauv ntawm lub valve yog blunt thiab sib npaug, thiab lub valve qia nyem zawj yuav tsum tau muab sib dhos kom ntseeg tau tias tsis muaj kev hloov pauv ntawm qhov nruab nrab ntawm lub siab thaum lub sijhawm khiav, tsis muaj tam sim ntawd hloov nyob rau hauv cov kev taw qhia ntawm tus nqi ntws, thiab yuav tsis muaj cov khoom nyob rau hauv lub kab noj hniav ntawm lub valve lub cev. Tiv thaiv hluav taws xob zoo li qub.
③Tus tsim ntawm lub disc thiab lub rooj zaum lub rooj zaum geometry ntawm lub ntiaj teb valve yog kheej kheej-conical. Kev sib cuag ntawm lub ntsej muag kheej kheej thiab lub ntsej muag conical yog theoretically ib kab kev sib cuag, tab sis qhov tseeb nws yog ib txoj siv nqaim heev, uas tuaj yeem ua tiav nyob rau hauv qis load. tsim kev ntxhov siab. Cov qauv kheej kheej-conical, tom qab lub valve raug kaw, muaj lub zog tivthaiv uas tiv thaiv kev txav mus los vim kev co. Lub pob valve disc tuaj yeem tig nyob rau hauv ib qho kev sib txawv ntawm lub rooj zaum conical valve, thiab nws tau raug kho kom ntseeg tau tias kev sib khi zoo.
④ Txhawm rau ua kom lub ntiaj teb valve ua tiav qhov kev sib khi zoo, kev txav ntawm lub valve disc yog kev coj ua kom nws thiaj li tuaj yeem tsaws ntawm lub rooj zaum valve. Thaum lub dav disc yog coj nyob rau hauv lub valve lub cev, lub valve disc yog thawb tom qab los ntawm qhov nruab nrab ntws. Lub zog yog los ntawm lub valve lub cev es tsis yog los ntawm lub valve qia, uas ntxiv rau kev ua tau zoo sealing thiab muaj peev xwm ntawm ntim cov ntsaws ruaj ruaj.
⑤ Kev sib txuas ntawm lub valve disc thiab lub valve qia ntawm lub ntiaj teb valve yog hom pob khawm. Nws qhov txiaj ntsig loj tshaj plaws yog tias nws tuaj yeem hloov kho qhov chaw nruab nrab ntawm lub valve disc thiab txo qhov kev sib txhuam ntawm lub valve disc thiab lub rooj zaum lub valve thaum lub sijhawm txav mus los, thiab nws cov sealing kev ua tau zoo tuaj yeem lav tau yooj yim.
⑥ Lub valve qia ntawm lub ntiaj teb valve yog tsim los ua tus nqa pas nrig, uas yog, thaum lub valve qia nce thiab ntog
Yog tias lub valve tsis tig, lub valve disc txav nce thiab nqis nrog nws, uas txo qhov kev sib txhuam ntawm lub valve disc thiab lub rooj zaum valve thaum nws txav, txo qhov hnav ntawm cov khoom ntim, thiab tib lub sijhawm, kev hnav ntawm lub valve. lub foob sab sauv kuj yuav raug txo kom tsawg.
⑦ Lub qia txiv ntoo ntawm lub ntiaj teb valve raug kaw nrog lub hau hlau kom cais cov qia txiv ntoo los ntawm huab cua, tiv thaiv cov plua plav los ntawm cov txiv ntoo qia, thiab nkag mus rau sab qis ntawm qia los ntawm cov xov trapezoidal, thiaj li nkag mus rau hauv cov khoom ntim. lub thawv thaum lub sij hawm nqa lub qia, lub lubrication ntawm lub bracket bearing yuav tsum yog fluorinated roj.
⑧ Muaj cov bolts hauv av ntawm qhov kawg flange ntawm lub valve lub cev rau cov pa tshwj xeeb li qub, thiab lawv tau txuas nrog cov hlua hlau kom tsis txhob muaj kev sib tsoo tawg los ntawm cov pa taws los ntawm hluav taws xob zoo li qub.
⑨ Qhov nthuav tawm ntawm lub qia valve ntawm cov pa oxygen tshwj xeeb pob valve thiab lub ntiaj teb valve yuav tsum tau tiv thaiv plua plav thiab roj. Lub plexiglass npog tau nruab rau ntawm tus ncej ntawm lub bracket, thiab muaj qhov pom tseeb "tsis muaj roj" kos npe rau ceeb toom rau cov neeg ua haujlwm ntawm qhov chaw ua haujlwm.
4. Kev taw qhia ntws nruab nrab
The medium of the T-shaped globe valve flows in and out from the valve seat, and closing the valve can only be achieved after the valve seat is forcibly "covered" with the valve disc. Since the closing or opening of the globe valve is realized by the disc acting on the valve stem overcoming the dynamic pressure and static pressure on the front (or back) of the medium, the closing and opening torque of the globe valve is greater than that of the same pressure level and the same nominal size. Gate valve, the valve stem is stressed. Therefore, the medium flow direction of the T-shaped globe valve with small nominal size mostly enters from below the valve disc of the stop valve and then flows out from the top of the valve disc, that is, the medium flows in the "low in and high out" flow direction. Medium and large nominal size T-shaped globe valve, the nominal pressure is PN16~40 (or CL150~3001b), the nominal size is not less than DN100, or the nominal pressure is not less than PN64 (or CL>4001b), thiab qhov nominal loj tsis tsawg dua DN80. Cov kev taw qhia ntws ntawm qhov nruab nrab txais cov kev taw qhia ntws uas nkag los ntawm sab saum toj ntawm lub rooj zaum valve thiab valve disc ntawm lub ntiaj teb valve, thiab ntws tawm los ntawm lub hauv qab ntawm lub rooj zaum valve thiab valve disc, uas yog, qhov nruab nrab yog siab thiab qis tawm. Thiab kos lub nruab nrab ntws kev taw qhia ntawm lub valve ntawm qhov pom tseeb ntawm lub cev valve.
Tshwj xeeb li qub rau cov kav dej pa oxygen yuav tsum muaj kev nyab xeeb. Muaj cov kev cai tshwj xeeb hauv kev xaiv hom valve, kev tsim qauv, thiab xaiv cov khoom siv lub cev valve. Nyob rau tib lub sij hawm, nruj degreasing, anti-static, roj-dawb thiab lwm yam tshuaj xyuas yuav tsum tau.
