Qhov kev xaiv ntawm cov dej khov cia lub valve Koj puas paub cov khoom siv valve sealing dab tsi? Dab tsi yog cov yam ntxwv ntawm cov khoom sealing?
Valve xaiv yuav tsum tau them sai sai rau qhov teeb meem:
(1) hluav taws xob tswj valve, hloov valve sealing kev ua tau zoo yuav tsum nruj nrog cov txheej txheem ntawm khov thiab yaj, ethylene glycol sab hauv qee theem yuav khiav ntawm 2.19 ℃ / 5.56 ℃ kub ntau, ntawm sab nraud ntawm lub phaj hauv chilled. dej hauv 12 ℃, 7 ℃ / feem ntau khiav, yog tias lub rooj tsavxwm hauv ethylene glycol sab kaw lax rau xau, yuav ua rau lub phaj hauv cov dej khov. freezes ntawm ib sab, Freeze-cracking khoom.
(2) Kev soj ntsuam valve thiab bypass valve yuav tsum tau teem rau ntawm ob sab ntawm lub valve hluav taws xob; Rau kev kho qhov system, thiab kev ua haujlwm ntawm tes.
Lub valve hluav taws xob yuav tsum muaj cov cuab yeej hloov kho yooj yim.
Koj puas paub dab tsi valve sealing cov ntaub ntawv? Dab tsi yog cov yam ntxwv ntawm cov khoom siv sealing?
Txoj cai ntawm valve sealing
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 tau zoo ntawm kev sib khi, uas yog, muaj qhov sib txawv ntawm qhov sib khi, thiab lwm qhov 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.
01 Tightness ntawm kua
Lub 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 cov hlab ntsha. Thiab qhov ntawd ua rau lub tangent Angle. Thaum lub tangent lub kaum sab xis yog tsawg dua 90, cov kua yog txhaj rau hauv lub raj capillary thiab 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 tus qauv, roj nruj yog cuam tshuam nrog 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. Yog vim li cas 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 nruj dua li qhov ntsuas kua.
3 Sealing txoj cai ntawm to 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 chaw ntawm qhov tsis sib xws convex point yuav tshwm sim thaum ntxov, thaum pib tsuas yog nrog 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.
4. Valve sealing khub
Lub valve foob 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. 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, hauv kev xaiv cov khoom hnav, cov khoom siv, kev ua haujlwm, lubricity thiab corrosion ntawm lub sealing nto yuav tsum tau txiav txim siab. 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 txoj haujlwm ntawm kev tiv thaiv kom tsis muaj dej. Yog li ntawd, cov ntaub ntawv uas tiv thaiv corrosion, abrasion thiab yaig yuav tsum tau xaiv. Txwv tsis pub, qhov tsis muaj ib qho ntawm cov kev xav tau yuav ua rau nws qhov kev sib khi ua haujlwm ** txo qis.
2. Lub ntsiab tseem ceeb cuam tshuam rau lub valve foob
Muaj ntau yam cuam tshuam rau lub valve foob, feem ntau yog cov hauv qab no:
Post lub sij hawm: Aug-06-2022
