Valve tsav hom xaiv, kom paub qhov kev daws ntawm valve to

Valve tsav hom xaiv, kom paub cov kev daws teeb meem ntawm valve to Valve tsav hom xaiv yog raws li: 1) valve hom, specification thiab qauv. 2) lub sijhawm qhib thiab kaw ntawm lub valve (pipeline siab, qhov sib txawv loj ntawm lub valve), thrust. 3) Sib piv siab ambient kub nrog kua kub. 4) Hom thiab zaus ntawm kev siv. 5) Qhib thiab kaw ceev thiab sijhawm. 6) Lub taub hau, ntsia hlau lub sijhawm, kev sib hloov kev taw qhia. 7) Kev sib txuas hom. 8) Fais fab qhov chaw tsis muaj: hluav taws xob fais fab mov voltage, theem naj npawb, zaus; Pneumatic cua qhov chaw siab; Hydraulic nruab nrab siab. 9) Kev txiav txim siab tshwj xeeb: tsis tshua muaj kub, tiv thaiv corrosion, tawg-pov thawj, tsis muaj dej, tiv thaiv hluav taws, tiv thaiv hluav taws xob, thiab lwm yam Ntawm tag nrho cov valve actuation li, hluav taws xob thiab zaj duab xis pneumatic cov cuab yeej siv dav tshaj plaws. Cov khoom siv hluav taws xob feem ntau yog siv rau hauv cov khoom siv hluav taws xob kaw; Nyias zaj duab xis pneumatic ntaus ntawv yog tsuas yog siv nyob rau hauv lub tswj valve. Electromagnetic tsav yog tsuas yog siv rau me me txoj kab uas hla li qub. Lub embedded bellows tsav yog tsuas yog siv nyob rau hauv disc stroke li qub thiab corrosive thiab toxic media. Tab sis nws qhov ntau ntawm kev siv feem ntau txwv los ntawm cov cuab yeej pabcuam tsav uas tswj cov kis loj. Ib qho tshwj xeeb yuav tsum tau rau valve actuation yog lub peev xwm los txwv torque los yog axial quab yuam. Lub valve hluav taws xob cov cuab yeej siv torque limiting couplings. Hauv cov khoom siv hydraulic thiab pneumatic tsav, tus txheeb ze quab yuam nyob ntawm thaj chaw zoo ntawm lub diaphragm lossis piston thiab lub siab ntawm qhov nruab nrab tsav. Lub caij nplooj ntoos hlav kuj tseem siv tau los txwv cov kev siv dag zog. Cov kev daws teeb meem rau lub valve leakage valve tau dhau los ua ib qho ntawm cov khoom xau tseem ceeb hauv cov cuab yeej, yog li nws yog ib qho tseem ceeb heev los txhim kho lub peev xwm tiv thaiv lub valve, tiv thaiv lub valve to, yuav tsum paub cov kev paub yooj yim ntawm lub valve sealing qhov chaw los tiv thaiv kev tshaj tawm. leakage ------ valve sealing, qhov no yog qhov tseem ceeb tshaj plaws. 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 tshaj plaws 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. 1. 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. 2. Gas nruj 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. 3. Lub hauv paus ntsiab lus ntawm cov dej xau channel Lub valve foob yog tsim los ntawm ob qhov chaw, roughness, uas yog tsim los ntawm kev ntxhib los mos ntawm qhov tsis sib xws ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov yoj thiab qhov waviness ntawm qhov kev ncua deb ntawm cov 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. 4. Valve sealing khub Lub valve seal khub yog ib feem ntawm lub rooj zaum valve thiab kaw uas kaw thaum lawv nyob rau hauv kev sib cuag nrog ib leeg. 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. Piv txwv li, hnav cov khoom, yog tias cov khoom hnav ntau dua li qhov roughness ntawm qhov chaw me me, thaum lub sealing nto khiav hauv, qhov tseeb ntawm qhov chaw yuav raug txhim kho, thiab yuav tsis ua phem. 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. Muaj ntau yam cuam tshuam rau lub valve seal, feem ntau yog cov hauv qab no: 1. Sealing accessory structure Nyob rau hauv qhov kev hloov ntawm kub los yog sealing quab yuam, 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. 2. Lub siab tshwj xeeb ntawm sealing nto Lub siab tshwj xeeb ntawm lub sealing nto cuam tshuam rau kev sib khi 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. 3. 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. 4. 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.