Dab tsi yogPneumatic Control Valve?

Pneumatic Control Valve yog compressed cua raws li lub hwj chim qhov chaw, mus rau lub tog raj kheej li tus actuator, thiab nrog kev pab los ntawm positioner, converter, solenoid li qub thiab lwm yam khoom siv los tsav lub valve, kom ua tiav on-off los yog proportional regulation, tau txais kev tswj. teeb liab ntawm kev lag luam automation tswj system los kho qhov ntws, siab, kub thiab lwm yam txheej txheem tsis.Pneumatic Control Valve yog tus cwj pwm los ntawm kev tswj tau yooj yim, cov lus teb ceev ceev, thiab qhov tseem ceeb muaj kev nyab xeeb, tsis muaj kev ntsuas tawg ntxiv.Txawm li cas los xij, kev ua haujlwm ntawm lub valve qee zaus tsis ua haujlwm, hauv qab no peb yuav piav qhia meej txog qhov kev tswj hwm lub valve yuav tshwm sim 5 yam tsis ua haujlwm thiab nws txoj kev kho mob.

Hom Ib lub rooj zaum, ob lub rooj zaum, lub tes tsho Hom Loj Loj (Inch) DN20 txog DN200 (3/4 "to 8") Siab 16 / 40 / 64 bar (232 / 580 / 928 psi) TemperatureStandard hom: -20 ℃ to 200 ℃ (-4 ° F txog 392 ° F) Tsawg-kub hom: -60 ℃ to 196 ℃ (-76 ° F txog 384.8 ° F) Txias hom: -40 ℃ to 450 ℃ (-40 ° F txog 842 ° F) ) Kev xaiv kev sib txuas Flanged lossis Welded Valve Khoom WCB, CF8, CF8M, Cam khwb cia hlau Foob Cov Khoom Siv PTFE Pneumatic Accessories Positioner, FRL, pneumatic solenoid valve thiab txwv kev hloov Flow yam ntxwv sib npaug feem pua, linear, ceev-qhib Actuator hom Multi-caij nplooj ntoos hlav diaphragm actuator Actuator hom Direct nkaus, thim rov qab ua haujlwm Caij nplooj ntoos hlav ntau 20 mus rau 100KPa, 40 txog 200KPa, 80 txog 240KPa Khoom siv siab 0.4 ~ 0.5MPa Adjustable range 50: 1 Nqe Nyem qhov no kom tau txais tus nqi zoo dua!

5 Feem ntau Faults ntawm Pneumatic Control Valve:

1. Lub Control Valve tsis ua haujlwm

Ua ntej paub meej tias cov roj qhov siab yog qhov qub, nrhiav cov pa roj tsis ua haujlwm.Yog tias huab cua siab zoo li qub, txiav txim siab seb lub amplifier ntawm lub positioner lossis compressed cua converter muaj cov zis.

2. Valve Thaiv

Hauv cov xwm txheej zoo li no, koj tuaj yeem qhib sai sai, kaw cov kab thib ob lossis tswj lub valve, kom cov khoom raug nyiag los ntawm cov kab thib ob lossis tswj lub valve yog nruab nrab.Tsis tas li ntawd, koj tuaj yeem clamp lub qia nrog cov yeeb nkab txhuam, ntxiv rau lub teeb liab siab, qhov zoo thiab qhov tsis zoo ntawm lub zog tig qia, kom lub valve core flash card qhov chaw.

Yog tias tsis tuaj yeem daws qhov teeb meem, tuaj yeem ua rau kom cov pa roj ntau ntxiv, ua kom lub zog tsav kom txav mus los ntau zaus, tuaj yeem daws qhov teeb meem.Yog tias tseem tsis tuaj yeem txav mus, ces yuav tsum tau ua kom tswj tau qhov kev ua haujlwm ntawm lub valve disassembly, ntawm chav kawm, txoj haujlwm no yuav tsum muaj kev txawj ntse tshaj lij, yuav tsum tau ua nrog kev pab ntawm cov kws tshaj lij thiab cov kws tshaj lij, txwv tsis pub muaj qhov tshwm sim loj dua.

3. Valve xau

Lub to ntawm lub pneumatic tswj valve feem ntau yog tshwm sim los ntawm sab hauv ntawm lub valve tswj, leakage ntawm ntim thiab to ntawm valve core thiab valve rooj.

3.1 Internal Leakage

Valve qia ntev tsis xis nyob, roj valve qia ntev dhau, qia nce (lossis qis) qhov deb tsis txaus, ua rau muaj qhov sib txawv ntawm SPOOL thiab lub rooj zaum valve, tsis tuaj yeem tiv tauj tag nrho,

3.2 Packing Leakage

Txhawm rau ua kom cov khoom ntim tau yooj yim rau kev thauj khoom, chamfer nyob rau sab saum toj ntawm lub thawv ntim khoom, muab cov hlau tiv thaiv nplhaib nrog me me yaig-resisting qhov sib txawv nyob rau hauv qab ntawm lub thawv ntim khoom, pom tias qhov chaw sib cuag ntawm lub nplhaib tiv thaiv thiab cov khoom ntim tsis tuaj yeem ua tau. inclined dav hlau.

Txhawm rau tiv thaiv cov khoom los ntawm kev raug thawb tawm los ntawm qhov nruab nrab siab.Qhov saum npoo ntawm lub thawv ntim khoom thiab cov khoom sib tiv tauj yuav tsum tau ua kom tiav los txhim kho qhov chaw tiav thiab txo cov khoom hnav.Saj zawg zog graphite raug xaiv los ua cov muab tub lim vim nws cov huab cua zoo, kev sib txhuam me me, kev hloov me me hauv kev siv mus sij hawm ntev, me me thiab tsim kua muag, yooj yim los tswj, thiab lub siab tsis kam thiab kub tsis kam yog qhov zoo vim tias kev sib txhuam tsis zoo. hloov tom qab lub caj pas bolt yog nruj dua tsis muaj corrosion ntawm cov xov xwm sab hauv, thiab cov qia thiab cov khoom ntim nrog lub thawv sab hauv ntawm cov hlau tsis pitting lossis corrosion.

Nyob rau hauv txoj kev no, zoo tiv thaiv lub valve qia packing tsab ntawv foob, xyuas kom meej qhov kev ntseeg ntawm packing foob, kev pab cuam lub neej kuj zoo heev.

3.3 Valve Core, Valve Rooj Deformation Leakage

Kev xaiv cov khoom siv corrosion-resistant, lub hav zoov ntawm pitting, trachoma thiab lwm yam tsis xws luag ntawm cov khoom yuav tsum tau muab tshem tawm.Yog hais tias qhov deformation ntawm lub valve core thiab lub rooj zaum tsis loj heev, cov ntawv xuab zeb zoo tuaj yeem siv los zom, tshem tawm cov kab, txhim kho sealing tiav, txhawm rau txhim kho kev sib khi.Yog tias qhov kev puas tsuaj loj heev, koj yuav tsum hloov lub valve tshiab.

4. Oscillates

Lub caij nplooj ntoos hlav txhav ntawm kev tswj valve tsis txaus, cov teeb liab tso tawm ntawm kev tswj valve tsis ruaj khov thiab hloov pauv sai, uas yooj yim ua rau kev tswj valve oscillation.

Raws li qhov ua rau oscillation muaj ntau yam, nws yog ib qho tsim nyog los ua ib qho kev ntsuam xyuas ntawm cov teeb meem tshwj xeeb.Piv txwv li, kev kho lub valve nrog lub caij nplooj ntoos hlav rigidity loj yog xaiv, thiab cov qauv siv piston raug siv.

Cov yeeb nkab thiab lub hauv paus yog nruj vibrating, thiab kev co cuam tshuam tuaj yeem raug tshem tawm los ntawm kev ua kom muaj kev txhawb nqa.Hloov cov qauv sib txawv ntawm cov tswj valve.Kev ua haujlwm hauv qhov qhib me me tshwm sim los ntawm kev oscillation, yog tshwm sim los ntawm kev xaiv tsis raug, tshwj xeeb, vim tias lub valve muaj peev xwm C tus nqi loj heev, yuav tsum tau rov xaiv dua, xaiv lub peev xwm ntawm C nqi me me los yog siv cov sub- ntau tswj los yog siv cov niam txiv valve kom kov yeej cov tswj valve ua haujlwm hauv qhov qhib me me tshwm sim los ntawm oscillation.

5. Suab nrov

5.1 Tus txheej txheem ntawm tshem tawm cov suab nrov nrov

Tsuas yog thaum tswj valve resonance, muaj lub zog superposition thiab tsim ntau tshaj 100 decibels ntawm lub suab nrov.Qee qhov kev vibration muaj zog, suab nrov tsis loj, qee qhov kev co tsis muaj zog, tab sis suab nrov heev;qee qhov kev vibration thiab suab nrov loj dua.Cov suab nrov no ua rau lub suab monotonic ntawm qhov zaus ntawm 3000 thiab 7000 Hz.Pom tseeb, los ntawm kev tshem tawm cov resonance, lub suab nrov yuav ploj mus.

5.2 Cavitation suab nrov abatement

Cavitation yog lub hauv paus ntsiab lus ntawm hydrodynamic suab nrov.Thaum cavitation tshwm sim, cov npuas yuav tawg thiab ua rau muaj kev kub ceev, ua rau muaj zog hauv zos turbulence thiab cavitation suab nrov.Lub suab nrov muaj ntau zaus thiab ua rau lub suab zoo ib yam li cov kua uas muaj pob zeb.Kev tshem tawm thiab txo cov cavitation yog ib txoj hauv kev zoo los tshem tawm thiab txo cov suab nrov.

5.3 Siv Txoj Kev Thick Wall

Siv cov raj tuab-walled yog ib txoj hauv kev los daws cov suab nrov.Siv cov phab ntsa nyias tuaj yeem ua kom lub suab nrov ntawm 5 DB, siv cov phab ntsa tuab tuaj yeem txo cov suab nrov los ntawm 0 ~ 20 DB.Lub thickness ntawm phab ntsa ntawm tib txoj kab uas hla, qhov loj ntawm txoj kab uas hla ntawm tib phab ntsa thickness, qhov zoo dua lub suab nrov txo cov nyhuv.Rau DN200 kav nrog phab ntsa thickness ntawm 6.25,6.75,8,10,12.5,15,18,20 thiab 21.5 hli, lub suab nrov yuav txo tau los ntawm-3.5,-2 (ie nce), 0,3,6,8, 11,13 thiab 14.5 DB.Tau kawg, cov phab ntsa tuab dua, tus nqi siab dua.

5.4 Siv cov khoom siv suab nrov

Qhov no kuj yog ib qho ntau dua, txoj hauv kev zoo tshaj plaws ntawm kev ua suab nrov.Cov khoom siv suab nrov tuaj yeem siv los ntim cov suab nrov thiab cov yeeb nkab tom qab lub valve.Nws yog ib qho tseem ceeb uas yuav tsum tau taw qhia tias qhov ua tau zoo ntawm lub suab nrov txo qis qhov twg cov khoom siv suab nrov tau ntim thiab siv cov raj tuab tuab, vim tias lub suab nrov tuaj yeem mus ntev los ntawm cov dej ntws.Txoj hauv kev no yog siv tau qhov twg cov suab nrov tsis siab heev thiab cov yeeb nkab ntev tsis ntev, vim nws yog ib qho kev siv nyiaj ntau dua.

5.5 Series Silencer Method

Nws yog haum rau lub suab nrov ntawm aerodynamic.Nws tuaj yeem tshem tawm cov suab nrov hauv cov kua dej thiab txo cov suab nrov uas kis mus rau cov khoom ciam teb.Txoj kev no yog qhov ua tau zoo tshaj plaws thiab kev lag luam uas cov huab hwm coj txaus siab yog qhov siab lossis qhov sib piv ntawm kev poob siab ua ntej thiab tom qab lub valve siab.Kev siv cov nqus hom series silencers tuaj yeem txo cov suab nrov.Kev txiav txim siab nyiaj txiag, txawm li cas los xij, feem ntau txwv rau qhov txo qis ntawm 25 DB.

5.6 Txheej Txheem

Siv cov ntaub thaiv tsev, cov tsev thiab cov tsev kom cais cov suab nrov los ntawm ib puag ncig sab nraud kom tsis pub dhau qhov kev txwv.

5.7 Series Throttling

Thaum lub siab piv ntawm cov tswj valve siab (△ P / p 1≥0.8), cov txheej txheem ntawm cov throttling series yog siv los disperse tag nrho cov siab poob rau ntawm lub valve tswj thiab lub throttling lub ntsiab tom qab lub valve.DIFFUSERS, ntxeem tau txwv, piv txwv li, yog qhov zoo tshaj plaws ntawm kev txo suab nrov.Yuav kom tau txais qhov zoo tshaj plaws diffuser efficiency, lub diffuser (khoom khov thiab loj) yuav tsum tau tsim raws li lub installation ntawm txhua daim, kom lub suab nrov theem generated los ntawm lub valve yog tib yam li uas generated los ntawm lub diffuser.

5.8 Siv lub suab nrov qis

Tsis tshua muaj suab nrov valve raws li cov kua dej los ntawm cov spool, lub rooj zaum ntawm txoj kev tortuous flow (multi-channel, multi-channel) maj mam qeeb kom tsis txhob muaj qhov taw tes hauv txoj kev ntws los tsim supersonic.Muaj ntau hom ntawv, ntau hom qauv ntawm lub suab qis qis (muaj ib qho kev tsim tshwj xeeb) rau kev siv thaum xaiv.Thaum lub suab nrov tsis loj heev, xaiv lub tes tsho tsis tshua muaj suab nrov, tuaj yeem txo lub suab nrov 10 ~ 20 DB, qhov no yog qhov kev lag luam qis tshaj plaws.