Valve sealing nto puas yog vim li cas valve phau ntawv npauj npaim valve

Valve sealing nto puas yog vim li cas valve phau ntawv npauj npaim valve

Mechanical puas tsuaj, sealing nto nyob rau hauv qhov qhib thiab kaw ntawm Teb Chaws Asmeskas yuav ua rau puas, pob, nyem thiab lwm yam kev puas tsuaj. Nyob nruab nrab ntawm ob qhov chaw sealing, nyob rau hauv qhov kev txiav txim ntawm qhov kub thiab txias siab, atoms infiltrate rau ib leeg, ua rau adhesion tshwm sim. Thaum ob lub sealing nto txav ib leeg, adhesion yog yooj yim rub. Sealing nto roughness siab dua, qhov tshwm sim no tshwm sim yooj yim dua. Valve nyob rau hauv txoj kev kaw, lub valve disc nyob rau hauv tus txheej txheem ntawm rov qab mus rau lub rooj zaum yuav mob thiab nyem lub sealing nto, thiaj li hais tias lub sealing nto hauv zos hnav los yog indentation.
Kev yaig ntawm qhov nruab nrab yog qhov tshwm sim ntawm kev hnav, ntxuav thiab cavitation ntawm lub sealing nto thaum nruab nrab ua haujlwm. Ntawm ib qho ceev, cov khoom zoo hauv nruab nrab yuav ua txhaum lub sealing nto thiab ua rau muaj kev puas tsuaj hauv zos. Qhov nruab nrab ceev ceev yuav ncaj qha ntxuav lub sealing nto thiab ua rau lub zos puas. Thaum qhov nruab nrab yog tov thiab ib nrab vaporized, lub npau npau npau yuav tawg thiab cuam tshuam lub sealing nto, ua rau lub zos puas. Kev hloov pauv ntawm cov xov xwm yaig thiab tshuaj lom neeg yaig yuav ua rau lub ntsej muag sealing zoo.
Electrochemical yaig, sealing nto kev sib cuag nrog ib leeg, sealing nto thiab kaw lub cev thiab valve lub cev sib cuag thiab nruab nrab concentration sib txawv, oxygen concentration txawv thiab lwm yam, yuav ua rau muaj peev xwm sib txawv, electrochemical erosion, uas ua rau lub anode sab ntawm lub sealing nto yog eroded. .
Cov tshuaj yaig ntawm qhov nruab nrab, qhov nruab nrab nyob ze ntawm qhov chaw sealing nyob rau hauv cov ntaub ntawv ntawm tsis muaj tam sim no, qhov nruab nrab ncaj qha plays lub luag hauj lwm tshuaj nrog lub sealing nto, eroding lub sealing nto.
Kev txhim kho tsis raug thiab kev saib xyuas tsis zoo ua rau kev ua haujlwm tsis zoo ntawm lub sealing nto, thiab lub valve ua haujlwm nrog cov kab mob, uas ua rau lub sealing nto ua ntej.
Kev puas tsuaj tshwm sim los ntawm kev xaiv tsis raug thiab kev tswj xyuas. Qhov kev ua tau zoo tseem ceeb yog tias lub valve tsis raug xaiv raws li qhov kev ua haujlwm, thiab qhov kev txiav tawm yog siv los ua lub kaw lus valve, uas ua rau lub siab sealing siab dhau thiab nrawm dhau los yog lax sealing, kom lub sealing nto yog eroded. thiab hnav.
Sealing nto machining zoo tsis zoo, feem ntau qhia nyob rau hauv lub sealing nto qhov tsis xws luag xws li cov kab nrib pleb, porosity thiab clamp tsim, vim hais tias ntawm lub overlaying vuam thiab kev kho cua sov specification tsis raug xaiv nyob rau hauv tus txheej txheem ntawm lub overlaying welding thiab kev kho cua sov thiab tswj, tshwm sim los ntawm lub tsis zoo sealing lub ntsej muag nyuaj los ntawm qhov siab lossis qis, vim qhov sib txawv los ntawm kev ua yuam kev lossis kev kho cua sov tsis zoo, xaiv cov khoom sealing nto hardness tsis sib xws, tsis muaj corrosion, Feem ntau vim hais tias nyob rau hauv cov txheej txheem surfacing yuav tshuab hauv qab hlau mus rau sab saum toj, dilute lub sealing. nto alloy muaj pes tsawg leeg tshwm sim los ntawm. Tau kawg, kuj muaj teeb meem tsim.
Qhov ua rau sealing nto puas tuaj yeem sau tau raws li hauv qab no.
Qhov ua rau sealing nto puas yog tib neeg kev puas tsuaj thiab ntuj puas. Artificial puas yog tshwm sim los ntawm tej yam xws li kev tsim tsis zoo, kev tsim khoom tsis zoo, kev xaiv cov khoom siv tsis raug, kev teeb tsa tsis zoo, kev siv tsis zoo thiab kev saib xyuas tsis zoo. Kev puas tsuaj ntuj tsim yog qhov hnav thiab tsim kua muag ntawm lub valve raws li kev ua haujlwm ib txwm muaj, thiab kev puas tsuaj los ntawm qhov tsis tuaj yeem yaig thiab yaig ntawm lub sealing nto los ntawm qhov nruab nrab.
Npauj npaim valve Manual operation valve yog ua los ntawm kov lossis iav kis tau tus mob, hluav taws xob los yog pneumatic npauj npaim valve yog tsav los ntawm cov khoom siv hluav taws xob lossis cov khoom siv pneumatic, kom lub phaj npauj npaim tig 90 ° qhib lossis kaw lub valve. Rau cov npauj npaim li qub ua haujlwm manually (suav nrog lub tes tuav ntawm lub cuab yeej tsav tsheb) lossis nrog lub ciaj ntswj, lub valve yuav tsum raug kaw los ntawm kev tig lub log los yog ciaj ntswj clockwise thaum tig mus rau tes los yog ciaj ntswj, tshwj tsis yog tias muaj lwm yam teev hauv daim ntawv cog lus. Lub valve yuav tsum muab cia rau hauv ib chav qhuav, ventilated. Ob qhov kawg ntawm lub valve yuav tsum tau thaiv. Ntev-ntev li qub yuav tsum tau tshuaj xyuas tsis tu ncua rau cov av. Kev saib xyuas tshwj xeeb yuav tsum tau them rau kev ntxuav ntawm lub sealing nto kom tiv thaiv kev puas tsuaj ntawm lub sealing nto.
Ntau yam ntawm 1.
Phau ntawv no suav nrog nominal txoj kab uas hla DN50mm ~ 1600mm (2 "~ 64"), nominal siab
PN1.0 MPa rau 4.0 MPa (ANSI>
2. Siv
2.1 Nws yog tsuas yog siv los qhib lossis kaw qhov nruab nrab ntawm cov kav dej thiab cov khoom siv rau kev hloov kho, ntws cuam tshuam thiab xyuas.
2.2 Xaiv cov khoom ntawm lub valve raws li qhov nruab nrab.
2.2.1 Carbon steel valve yog tsim rau dej, chav, roj thiab lwm yam xov xwm.
2.2.2 Stainless hlau li qub yog tsim rau corrosive media.
2.2.3 Cam khwb cia hlau valve yog haum rau dej thiab roj nruab nrab.
2.3 Qhov ntsuas kub siv tau nyob ntawm cov khoom siv ntawm lub rooj zaum.
PTFE (PTFE) ≤ 130 ℃
Stainless hlau + complex ≤425 ℃
Roj hmab 60 ℃ lossis tsawg dua
Qauv ntawm 3.
3.1 Cov qauv yooj yim ntawm npauj npaim valve yog qhia hauv daim duab 1
3.2 Lub ntim ntawm cov khoom hnav yog ua los ntawm polytetrafluoroethylene los yog graphite hloov tau, thiab kev sib khi yog txhim khu kev qha.
4. Kev ua haujlwm
4.1 Kev tuav tswj lub valve txais kev tuav lossis lub iav kis tau tus mob, hluav taws xob lossis pneumatic npauj npaim valve yog tsav los ntawm cov khoom siv hluav taws xob lossis cov khoom siv pneumatic, kom lub phaj npauj npaim tig 90 ° qhib lossis kaw lub valve.
4.2 Rau tus npauj npaim valve ua haujlwm manually (xws li lub tes tuav ntawm lub tshuab tsav tsheb) lossis nrog lub ciaj ntswj, tshwj tsis yog tias muaj lwm yam teev tseg hauv daim ntawv cog lus, thaum tig mus rau lub tes tuav lossis tus ciaj ntswj, lub valve yuav tsum raug kaw los ntawm tig lub tes tuav lossis lub tes tsho clockwise.
4.3 Qhib thiab kaw cov lus qhia ntawm hluav taws xob thiab pneumatic npauj npaim li qub yog cim los ntawm qhov taw qhia txoj haujlwm ntawm cov khoom siv hluav taws xob thiab pneumatic.
5. Cia, tu, installation thiab siv
5.1 Lub valve yuav tsum muab cia rau hauv chav qhuav thiab qhov cua, thiab ob qhov kawg ntawm lub valve yuav tsum tau thaiv.
5.2 Lub sijhawm ntev khaws cia li qub yuav tsum tau tshuaj xyuas tsis tu ncua rau cov av. Kev saib xyuas tshwj xeeb yuav tsum tau them rau kev ntxuav ntawm lub sealing nto kom tiv thaiv kev puas tsuaj ntawm lub sealing nto.
5.3 Ua ntej kev teeb tsa, ua tib zoo xyuas seb lub cim valve puas yog raws li kev siv.
5.4 Ua ntej kev teeb tsa, lub valve hla thiab sealing nto yuav tsum tau kuaj xyuas. Yog tias muaj av, nws yuav tsum tau ntxuav nrog ib daim ntaub ntxuav.
5.5 Ua ntej kev teeb tsa, xyuas seb lub ntim puas tau ntim kom ntseeg tau tias cov ntim khoom yog airtight thiab yuav tsum tsis txhob cuam tshuam kev sib hloov ntawm lub valve qia.
5.6 Thaum lub sij hawm kev teeb tsa, lub zog nruj ntawm cov ntsia hlau txuas yuav tsum raug kaw kom sib npaug.
5.7 Lub npauj npaim valve tuaj yeem ntsia tau rau ntawm kab rov tav thiab ntsug, thiab txoj haujlwm teeb tsa yuav tsum xyuas kom meej tias nws yooj yim siv, tswj thiab hloov.
5.8 Thaum lub valve qhib los yog kaw, tus kov yuav tsum tau siv los qhib thiab kaw, thiab lub auxiliary lever lossis lwm yam cuab yeej yuav tsum tsis txhob qiv.
5.9 Lub valve yuav tsum tau tshuaj xyuas tsis tu ncua rau kev hnav thiab ntim gasket rau ntawm qhov chaw sib khi. Nyob rau hauv cov ntaub ntawv ntawm kev puas tsuaj los yog tsis ua hauj lwm, kho los yog hloov nyob rau hauv lub sij hawm.
5.10 Rau kev khaws cia, kev saib xyuas, kev teeb tsa thiab kev siv hluav taws xob thiab pneumatic valve kis tau tus mob, thov mus rau "Cov lus qhia ua haujlwm rau cov khoom siv hluav taws xob" thiab "Cov Lus Qhia Ua Haujlwm rau cov khoom siv pneumatic valve".
6. Qhov ua yuam kev, ua rau, thiab tshem tawm txoj hauv kev tau qhia hauv Table 1
Table 1 Tej yam ua txhaum, ua rau, thiab kev daws teeb meem
Warranty ntawm 7.
Cov chaw tsim khoom yog lub luag haujlwm rau lub warranty ntawm lub valve hauv ib xyoos tom qab nws muab tso rau hauv kev siv, tab sis tsis pub dhau 18 lub hlis tom qab xa khoom. Tsis pub dhau lub sijhawm lav, vim cov khoom lag luam zoo tuaj yeem kho lossis hloov qhov chaw.