Lub hauv paus ntsiab lus ntawm valve sealing valve sealing cov khoom! Valve packing caj pas thiab xov lub zog lub zog xyuas txoj kev

Lub hauv paus ntsiab lus ntawm valve sealing valve sealing cov khoom! Valve packing caj pas thiab xov lub zog lub zog kuaj txoj kev Valve foob kev ua haujlwm yuav tsum tau ua, txhawm rau tiv thaiv lub kaum sab xis. Raws li qhov sib txawv ntawm qhov sib txawv thiab qib ntawm cov dej ntws tawm, cov dej ntws tawm ntawm lub valve yog qhov sib txawv, yog li nws yuav tsum tau muab tso rau qhov sib txawv ntawm kev tiv thaiv kev tiv thaiv. Sealing yog tiv thaiv kom tsis txhob tawm, yog li lub hauv paus ntsiab lus ntawm lub valve sealing kuj yog los ntawm kev tiv thaiv kev tshawb fawb to. Muaj ob yam tseem ceeb ua rau cov dej xau, ib qho yog qhov tseem ceeb cuam tshuam rau kev ua haujlwm sealing, uas yog, muaj qhov sib txawv ntawm qhov sib khi, qhov sib txawv yog qhov sib txawv ntawm ob sab ntawm lub sealing khub. Lub hauv paus ntsiab lus ntawm valve sealing kuj yog los ntawm cov kua sealing, gas sealing, leakage channel sealing txoj cai thiab valve sealing khub thiab lwm yam plaub yam los soj ntsuam Valve seal kev ua tau zoo, los tiv thaiv lub kaum sab xis. Raws li qhov sib txawv ntawm qhov sib txawv thiab qib ntawm cov dej ntws tawm, cov dej ntws tawm ntawm lub valve yog qhov sib txawv, yog li nws yuav tsum tau muab tso rau qhov sib txawv ntawm kev tiv thaiv kev tiv thaiv. Lub hauv paus ntsiab lus ntawm lub valve nruj sealing yog los tiv thaiv kev xau, yog li lub hauv paus ntsiab lus ntawm valve sealing kuj yog los ntawm kev tiv thaiv kev tshawb fawb to. Muaj ob yam tseem ceeb ua rau cov dej xau, ib qho yog qhov tseem ceeb cuam tshuam rau kev ua haujlwm sealing, uas yog, muaj qhov sib txawv ntawm qhov sib khi, qhov sib txawv yog qhov sib txawv ntawm ob sab ntawm lub sealing khub. Lub hauv paus ntsiab lus ntawm valve sealing kuj yog los ntawm cov kua sealing, gas sealing, to channel sealing txoj cai thiab valve sealing khub thiab lwm yam plaub yam los soj ntsuam. Tightness ntawm cov kua Qhov nruj ntawm cov kua yog txiav txim los ntawm nws viscosity thiab nto nro. Thaum lub valve lub qhov dej ntws tawm ntawm lub capillary yog ntim nrog roj, qhov nro tuaj yeem rub tawm los yog nqus cov kua rau hauv lub capillary. Thiab qhov ntawd ua rau lub tangent Angle. Thaum lub kaum sab xis qis dua 90 °, cov kua yog txhaj rau hauv lub raj capillary, thiab cov dej xau tshwm sim. Qhov laj thawj ntawm kev xau yog nyob rau hauv cov khoom sib txawv ntawm qhov nruab nrab. Kev sim nrog cov xov xwm sib txawv, nyob rau hauv tib txoj kev, yuav tau txais cov txiaj ntsig sib txawv. Koj tuaj yeem siv dej, cua, roj av, thiab lwm yam. Thaum lub kaum sab xis siab dua 90 °, cov dej xau kuj yuav tshwm sim. Vim yog kev sib raug zoo nrog cov roj los yog siv quav ciab zaj duab xis ntawm cov hlau nto. Thaum cov yeeb yaj kiab saum npoo no tau yaj lawm, cov yam ntxwv ntawm cov hlau nto hloov pauv, thiab cov kua dej, uas yav tas los repelled, yuav ntub dej thiab xau. Nyob rau hauv qhov kev pom ntawm qhov teeb meem saum toj no, raws li Poisson cov mis, lub hom phiaj ntawm kev tiv thaiv los yog txo cov dej xau tuaj yeem ua tiav nyob rau hauv cov xwm txheej ntawm kev txo qis capillary txoj kab uas hla thiab nruab nrab viscosity. Tightness ntawm roj Raws li Poisson cov mis nyuj, roj nruj muaj feem xyuam rau cov roj molecules thiab roj viscosity. Cov dej xau yog qhov sib npaug ntawm qhov ntev ntawm lub capillary thiab viscosity ntawm cov pa roj, thiab proportional rau txoj kab uas hla ntawm capillary thiab lub zog tsav. Thaum lub cheeb ntawm lub capillary thiab qhov nruab nrab degrees ntawm kev ywj pheej ntawm cov roj molecules yog tib yam, cov roj molecules yuav ntws mus rau hauv lub capillary nrog dawb thermal motion. Yog li ntawd, thaum peb ua qhov kev ntsuam xyuas valve sealing, qhov nruab nrab yuav tsum yog dej los ua lub luag haujlwm ntawm kev sib khi, nrog rau huab cua lossis roj tsis tuaj yeem ua lub luag haujlwm ntawm sealing. Txawm hais tias peb txo cov kab mob capillary hauv qab cov roj molecule los ntawm cov yas deformation, qhov ntws ntawm cov roj tseem tsis tuaj yeem nres. Qhov laj thawj yog tias cov roj tseem tuaj yeem cuam tshuam los ntawm cov phab ntsa hlau. Yog li thaum peb ua qhov ntsuas roj, peb yuav tsum ua kom nruj dua li qhov ntsuas ua kua. Lub hauv paus ntsiab lus ntawm kev xau channel Lub valve foob yog tsim los ntawm ob qhov chaw, roughness, uas yog tsim los ntawm roughness ntawm lub unevenness kis ntawm lub waveform nto thiab lub waviness ntawm qhov deb ntawm lub peaks. Nyob rau hauv cov xwm txheej uas lub elastic quab yuam ntawm cov ntaub ntawv hlau feem ntau yog tsawg nyob rau hauv peb lub teb chaws, peb yuav tsum tau nce siab dua qhov yuav tsum tau rau lub compression quab yuam ntawm cov ntaub ntawv hlau, uas yog, compression quab yuam ntawm cov khoom yuav tsum tshaj nws elasticity, yog hais tias peb xav kom ua tiav cov ntaub ntawv. sealing xeev. Yog li ntawd, nyob rau hauv lub tsim ntawm lub valve, lub sealing khub ua ke nrog ib tug tej yam hardness sib txawv kom phim, nyob rau hauv qhov kev txiav txim ntawm lub siab, nws yuav tsim ib tug tej yam degree ntawm yas deformation sealing nyhuv. Yog hais tias lub sealing nto yog cov khoom siv hlau, ces qhov tsis sib xws ntawm qhov chaw ntawm qhov chaw yuav tshwm sim thaum ntxov, thaum pib ntawm qhov yuav tsum tau siv cov khoom me me tuaj yeem ua rau cov khoom tsis sib xws ntawm cov yas deformation. Thaum qhov sib cuag saum npoo nce, qhov tsis sib xws ntawm qhov chaw yuav dhau los ua yas - elastic deformation. Tom qab ntawd qhov roughness ntawm ob qhov chaw hauv qhov chaw concave yuav tshwm sim. Cov kev txuas ntxiv no tuaj yeem ua kom haum thaum lub load uas ua rau cov yas deformation hnyav ntawm cov khoom siv hauv qab yog siv thiab ob qhov chaw nyob ze, raws txoj kab txuas ntxiv thiab nyob rau hauv lub nplhaib kev taw qhia. Valve sealing khub Lub valve foob khub yog ib feem ntawm lub rooj zaum valve thiab kaw uas kaw thaum lawv sib cuag. Cov hlau sealing nto yog qhov ua rau muaj kev puas tsuaj los ntawm clamping media, media corrosion, hnav hais, cavitation thiab yaig thaum siv. Xws li hnav cov khoom. Yog tias cov khoom hnav me dua qhov roughness ntawm qhov chaw, qhov tseeb ntawm qhov chaw yuav raug txhim kho thaum lub sealing nto khiav hauv, thiab yuav tsis deteriorate. Ntawm qhov tsis sib xws, nws yuav ua rau qhov tseeb ntawm qhov chaw tsis zoo. Yog li ntawd, nyob rau hauv kev xaiv ntawm hnav hais, cov khoom, ua hauj lwm mob, lubricity thiab corrosion ntawm lub sealing nto yuav tsum tau xam comprehensively. Raws li hnav cov khoom, thaum peb xaiv cov ntsaws ruaj ruaj, peb yuav tsum ua tib zoo xav txog ntau yam uas cuam tshuam rau lawv cov kev ua tau zoo txhawm rau ua si kev ua haujlwm ntawm kev tiv thaiv cov dej tawm. Yog li ntawd, cov khoom uas tiv thaiv corrosion, abrasion thiab yaig yuav tsum tau xaiv. Txwv tsis pub, qhov tsis muaj ib qho ntawm qhov yuav tsum tau ua yuav ua rau nws qhov kev sib khi ua haujlwm ** txo qis. Lub ntsiab yam tseem ceeb cuam tshuam rau lub foob valve Muaj ntau yam cuam tshuam rau lub foob valve, feem ntau yog cov hauv qab no: Kev sib foob sib khi hauv qab qhov kev hloov ntawm qhov kub thiab txias los yog quab yuam sealing, tus qauv ntawm lub sealing khub yuav hloov. Thiab qhov kev hloov no yuav cuam tshuam thiab hloov qhov sib khi ntawm lub zog, kom qhov kev ua tau zoo ntawm lub valve foob raug txo. Yog li ntawd, thaum xaiv cov ntsaws ruaj ruaj, peb yuav tsum xaiv cov ntsaws ruaj ruaj nrog elastic deformation. Nyob rau tib lub sijhawm, xyuam xim rau qhov dav ntawm qhov sealing nto. Yog vim li cas yog qhov kev sib cuag ntawm lub sealing khub tsis zoo ib yam. Thaum qhov dav ntawm qhov sealing nto nce, nws yog ib qho tsim nyog yuav tsum tau ua kom muaj zog ntxiv rau kev sib khi. Lub siab tshwj xeeb ntawm sealing nto Qhov tshwj xeeb siab ntawm qhov sealing nto cuam tshuam rau kev ua haujlwm sealing thiab kev pabcuam lub neej ntawm lub valve. Yog li ntawd, sealing nto siab kuj yog ib qho tseem ceeb heev. Raws li cov xwm txheej zoo ib yam, ntau lub siab tshwj xeeb yuav ua rau lub valve puas, tab sis qhov tshwj xeeb me me yuav ua rau lub valve to. Yog li ntawd, peb yuav tsum tau ua tib zoo xav txog qhov tshwj xeeb siab hauv kev tsim ntawm qhov tsim nyog. Lub cev lub cev ntawm qhov nruab nrab Lub cev lub cev ntawm qhov nruab nrab kuj cuam tshuam rau kev ua haujlwm ntawm lub valve. Cov khoom ntawm lub cev muaj xws li kub, viscosity, thiab hydrophilicity saum npoo. Qhov kub thiab txias hloov tsis tsuas yog cuam tshuam rau kev so ntawm lub sealing khub thiab qhov loj ntawm cov khoom, tab sis kuj muaj kev sib raug zoo nrog cov viscosity ntawm cov roj. Lub viscosity ntawm cov pa nce lossis txo nrog qhov nce lossis txo qhov kub. Yog li ntawd, txhawm rau txo qhov cuam tshuam ntawm qhov kub thiab txias ntawm qhov kev sib khi ntawm lub valve, peb yuav tsum tsim cov khoom sib khi rau hauv lub rooj zaum hloov tau thiab lwm yam li qub nrog cov nyiaj kub kub. Viscosity yog txuam nrog permeability ntawm cov kua. Nyob rau tib lub sijhawm, qhov viscosity ntau dua, cov dej permeable tsawg dua. Deg hydrophilicity txhais tau hais tias thaum muaj ib zaj duab xis nyias ntawm cov hlau, cov yeeb yaj kiab yuav tsum tau muab tshem tawm. Vim hais tias ntawm no nyias zaj duab xis ntawm cov roj, nws yuav rhuav tshem lub hydrophilicity ntawm nto, ua rau blockage ntawm cov kua raws. Qhov zoo ntawm sealing khub Seal zoo feem ntau yog hais txog kev xaiv cov khoom siv, kev sib txuam, kev tsim khoom raug ntawm daim tshev. Piv txwv li, lub disc haum zoo nrog lub rooj zaum sealing lub ntsej muag los txhim kho nruj. Cov yam ntxwv ntawm ntau lub nplhaib corrugations yog tias nws cov labyrinth sealing kev ua tau zoo. Valve leakage yog ib txwm muaj nyob rau hauv lub neej thiab kev tsim khoom, lub teeb tuaj yeem ua rau khib nyiab, lossis ua rau muaj kev phom sij rau lub neej, xws li cov kais dej valve tawm, los yog ua rau muaj kev cuam tshuam loj heev, xws li kev lag luam tshuaj lom neeg thiab tsim kev puas tsuaj, tawg, tawg thiab corrosive nruab nrab to hauv. qhov xwm txheej ntawm, kev hem thawj loj rau tus kheej kev nyab xeeb thiab kev nyab xeeb ntawm cov khoom ntiag tug, thiab ib puag ncig muaj kuab paug. Lub valve uas nyob ntawm sab nraud quab yuam kev sib hloov tsav kom qhib thiab kaw yog tsim los nrog cov khoom siv sib khi uas siv rau hauv cov khoom ntim ntim nrog qee cov packing rings, thiaj li ua tiav cov nyhuv sealing, tab sis qhov kev sib khi yog dab tsi? Valve packing to leakage yog ib qho ntawm qhov tsis zoo tshaj plaws ntawm qhov ua txhaum ntawm lub valve, tab sis muaj ob qho laj thawj. Hom valve seal Seals tseem yog cov khoom tseem ceeb hauv cov li qub. Lub sealing kev ua tau zoo ntawm lub valve yog hais txog lub peev xwm ntawm lub sealing qhov chaw ntawm lub valve los tiv thaiv kev tawm tawm, nws yog qhov tseem ceeb tshaj plaws kev ua tau zoo Performance index ntawm lub valve. Muaj peb qhov kev sib khi ntawm lub valve: Kev sib cuag ntawm qhov qhib thiab kaw qhov chaw thiab lub sealing nto ntawm lub rooj zaum; Qhov haum ntawm packing thiab valve qia thiab cov thawv ntim khoom; Kev sib koom ntawm lub cev thiab lub kaus mom. Tus qub xau yog hu ua ENDoleaker, feem ntau paub tias yog qhov xoob xoob, thiab yuav cuam tshuam rau lub VALVE lub peev xwm txiav tawm qhov nruab nrab. Rau cov chav kawm txiav-tawm valve, tsis tso cai rau sab hauv. Qhov kawg ntawm ob qhov xau yog hu ua leakage, uas yog, qhov nruab nrab ntawm lub valve mus rau lub valve. Cov dej xau yuav ua rau cov khoom poob, kev ua qias tuaj ib puag ncig, thiab muaj xwm txheej loj. Rau flammable, explosive, lom los yog radioactive xov xwm, tsis tso cai, yog li lub valve yuav tsum muaj ib tug txhim khu kev qha sealing kev kawm. Yuav ua li cas los daws qhov teeb meem sealing yog tsis careless, lub valve khiav, kev pheej hmoo, poob, to phenomenon, feem ntau ntawm lub department tau tshwm sim ntawm no. Hauv qab no peb yuav xav txog lub valve dynamic sealing, static sealing teeb meem. Dynamic foob Valve dynamic foob, lub ntsiab ntiv tes valve qia foob. Tsis txhob cia lub valve nruab nrab nrog lub qia txav thiab to, yog lub valve dynamic foob lub ntsiab lus tseem ceeb. Packing box daim ntawv: valve dynamic foob, feem ntau packing box. Daim ntawv yooj yim ntawm lub thawv ntim khoom yog: 1, caj pas hom: qhov no yog ntau hom. Kev sib koom ua ke tuaj yeem paub qhov txawv ntau yam. Piv txwv li, nyob rau hauv cov nqe lus ntawm compression bolts, sib cais T-bolts (rau cov tsis tshua muaj siab li qub nrog siab ≤16 kg / cm2), ob lub taub hau bolts thiab movable sib koom bolts, thiab lwm yam. Los ntawm lub caj pas, tuaj yeem muab faib ua ib qho thiab ua ke. 2, nias lub txiv ntseej hom: hom ntawv no, sab nraud loj me me, tab sis lub zog nias yog txwv, tsuas yog siv hauv cov li qub me me. Packing: nyob rau hauv lub thawv ntim khoom, lub ntim yog nyob rau hauv kev sib cuag ncaj qha nrog lub valve qia thiab ntim nrog lub thawv ntim kom tiv thaiv qhov to ntawm qhov nruab nrab. Muaj cov cai hauv qab no rau kev ntim khoom: Zoo sealing; Corrosion tsis kam; Kev sib txhuam me me coefficient; Ua raws li qhov nruab nrab kub thiab siab.