Kev nyab xeeb valve feem ntau ntsib qhov kev txiav txim txhaum cai thiab kev saib xyuas fluorine hauv ob sab phlu valve siv cov lus qhia

Kev nyab xeeb valve feem ntau ntsib qhov kev txiav txim txhaum cai thiab kev saib xyuas fluorine hauv ob sab phlu valve siv cov lus qhia

Kev nyab xeeb valve feem ntau ntsib kev txiav txim siab thiab kev saib xyuas
1. Tsis txhob qhib thaum lub siab tau teev tseg
Yog vim li cas rau qhov xwm txheej no yog qhov tsis txaus siab tsis tu ncua. Lub compression ntawm lub caij nplooj ntoos hlav los yog txoj hauj lwm ntawm lub rauj yuav tsum tau hloov kho; Disc sticks rau lub rooj. Kev nyab xeeb valve yuav tsum tsis tu ncua phau ntawv huab cua lossis dej ntsuas; Lever hom kev ruaj ntseg valve lever yog daig los yog hnyav rauj yog tsiv. Qhov hnyav yuav tsum tau hloov kho thiab lub zog yuav tsum txav mus los ywj siab.
2, tsawg tshaj li qhov teev siab qhib
Lub siab tseem ceeb tsis yog; Caij nplooj ntoos hlav aging caij nplooj ntoos hlav elasticity txo. Cov ntsia hlau kho los yog lub caij nplooj ntoos hlav yuav tsum tau nruj kom zoo.
3. Lub disc tsis rov qab mus rau lub rooj tom qab tso tawm
Qhov no feem ntau yog tshwm sim los ntawm lub caij nplooj ntoos hlav bending qia, disc installation txoj hauj lwm tsis yog los yog daig. Nws yuav tsum tau reassembled.
4, disc zaus dhia lossis vibration
Lub ntsiab yog vim li cas lub caij nplooj ntoos hlav txhav loj heev. Lub caij nplooj ntoos hlav uas tsim nyog nruj yuav tsum tau siv los hloov; Lub voj voog hloov kho tsis raug kho kom zoo, kom lub siab siab dhau lawm. Txoj hauj lwm ntawm lub nplhaib kho yuav tsum tau hloov kho; Qhov kev tawm tsam ntawm cov yeeb nkab tawm yog loj heev, uas ua rau cov paug tawm rov qab ntau dhau. Tshem tawm cov kav dej yuav tsum raug txo kom tsawg.
5. Lub siab tseem nce ntxiv tom qab tso tawm
Qhov no yog vim qhov kev xaiv ntawm kev nyab xeeb valve tshem tawm Xiaoping cov cuab yeej kev nyab xeeb tso tawm, yuav tsum tau rov xaiv qhov tsim nyog valve; qia nruab nrab kab los yog lub caij nplooj ntoos hlav xeb, kom lub disc tsis tuaj yeem qhib rau qhov siab kom zoo, yuav tsum tau rov sib dhos qia lossis hloov lub caij nplooj ntoos hlav; Yog hais tias qhov kev txiav cov yeeb nkab tsis txaus, cov yeeb nkab tso rau hauv txoj kab nrog rau qhov chaw nyab xeeb yuav tsum tau txais yuav.
6, xau
Nyob rau hauv ib txwm ua hauj lwm siab ntawm cov cuab yeej, qhov to ntawm lub disc thiab lub sealing nto ntawm lub rooj zaum tshaj qhov tso cai degree. Yog vim li cas yog: muaj av ntawm lub valve disc thiab sealing nto ntawm lub rooj zaum. Nws tuaj yeem siv lub tshuab nqa nqa los qhib lub valve ob peb zaug, cov av ntxuav tawm; Kev puas tsuaj rau sealing nto. Nws yuav tsum tau kho los ntawm kev sib tsoo los yog sib tsoo tom qab tig raws li qhov kev puas tsuaj. Qws dabtsi yog khoov, tilting, los yog lever thiab fulcrum deflection, ua rau spool thiab disc misalignment. Yuav tsum tau reassembled los yog hloov; Caij nplooj ntoos hlav elasticity txo los yog poob elasticity. Kev ntsuas xws li hloov lub caij nplooj ntoos hlav thiab kho qhov qhib siab yuav tsum tau ua.
Cov lus qhia rau kev siv cov fluorine lined li qub
Cov yam ntxwv tseem ceeb ntawm fluorine lined valve:
Ua ntej, fluorine lined valve tshuaj ua haujlwm:
Atmospheric aging kuj: hluav taws xob tiv thaiv thiab tsis tshua muaj permeability: lub sij hawm ntev raug rau huab cua, qhov chaw thiab cov khoom tseem tsis hloov.
Incombustibility: oxygen txwv qhov ntsuas qis dua 90.
Acid thiab alkaline tsis kam: insoluble nyob rau hauv muaj zog acids, bases thiab organic solvents.
Oxidation kuj: tiv thaiv corrosion los ntawm oxidants muaj zog.
Ob, fluorine lined valve ua haujlwm yam ntxwv:
Kev Ua Haujlwm: Nruab nrab ua haujlwm kub: -100 ℃ ~ -150 ℃
Nruab nrab ua hauj lwm siab: zoo siab: 2.5mpa, tsis zoo siab ntawm chav tsev kub 70KPa
Corrosion kuj: steel PTFE puas yeeb nkab, ntxiv rau molten hlau lithium, poov tshuaj, sodium, chlorine trifluoride, oxygen trifluoride ntawm qhov kub thiab txias, siab txaus tus nqi kua fluorine, nws muaj peev xwm tiv tau yuav luag tag nrho cov tshuaj, nrog rau cov concentrated nitric acid thiab aqua royalty corrosion. , nws tuaj yeem ua haujlwm hauv qhov kub ntawm 230 ℃ - 250 ℃ rau lub sijhawm ntev. Hlau polyvinylidene fluoride los yog lwm yam vinylidene fluoride composite yeeb nkab, halogen, halogenated hydrocarbons, muaj zog oxidants, boiling acid, alkali, ntau yam organic solvents muaj corrosion kuj zoo, tab sis tsis resistant rau cov pa luam yeeb sulfuric acid, concentrated kub sulfuric acid thiab nitric acid, ketones. , esters, amines thiab kub sulfonating tus neeg saib xyuas corrosion saum 90 ℃.
Lub ntsiab zoo ntawm fluorine lined valve:
Kub kub resistant ua hauj lwm kub mus txog 250 ℃
Tsawg kub tsis kam nrog zoo mechanical toughness; Txawm tias thaum kub poob rau -196 ℃, elongation ntawm 5% tuaj yeem tswj tau.
Corrosion tsis kam rau feem ntau cov tshuaj thiab cov kuab tshuaj, qhia inertia, muaj zog acid thiab alkali, dej thiab ntau yam organic solvents.
Huab cua tiv taus nrog kev laus lub neej hauv plastics.
High lubrication yog qhov sib txhuam coefficient qis tshaj plaws hauv cov khoom siv.
Non-adhesion yog qhov tsawg kawg nkaus ntawm qhov nro hauv cov khoom siv, tsis ua raws li cov khoom siv.
Non-toxic nrog physiological inertia, non-toxic rau cov kab mob nyob.
Fluorine lined valve lub ntsiab kev siv:
Fluorine LINED VALVE YOG SUITABLE FOR high temperature corrosive gas and kua, lwm hom steel yas puas yeeb nkab thiab hlau yeeb nkab tsis haum rau conveying nruab nrab, steel PTFE complex. Cov yeeb nkab steel polyvinylidene fluoride puas tsim nyog rau kev xa xov corrosive nrog kev ua haujlwm kub ntawm -40 ℃ to + 150 ℃.
Fluorine hauv ob sab phlu valve processing technology introduction
A, tetrafluoroethylene (PTFE) - sodium naphthalene tov kev kho mob sib txuas txoj kev
Polytetrafluoroethylene (PTFE) - sodium naphthalene tov kev kho mob txoj kev sib txuas: sodium naphthalene tov kev kho mob ntawm fluorine uas muaj cov ntaub ntawv, feem ntau yog los ntawm corrosion kua thiab PTFE yas tshuaj tiv thaiv, kua muag tawm ib feem ntawm cov fluorine atoms ntawm cov khoom, yog li ntawm sab laug carbonized txheej thiab qee pawg polar. Infrared spectrum qhia tau hais tias qhov kev taw qhia ntawm hydroxyl pawg, carbonyl pawg thiab unsaturated daim ntawv cog lus thiab lwm pawg polar nyob rau saum npoo, cov pab pawg no tuaj yeem ua kom lub zog saum npoo, txo qhov kev sib cuag ntawm lub kaum sab xis, txhim kho lub wettability, los ntawm kev nyuaj rau nplaum. Qhov no yog txoj kev siv tau zoo tshaj plaws thiab feem ntau siv ntawm txhua txoj kev kawm tam sim no. Sodium naphthalene tetrahydrofuran feem ntau yog siv los ua cov tshuaj tiv thaiv corrosion. Txoj kev sib khi yog raws li nram no:
(1) Kev npaj kev kho mob: ntxiv ib qho nyiaj ntawm sodium hlau rau hauv kev daws ntawm tetrahydrofuran thiab naphthalene, feem ntau ntawm sodium hlau yog tswj ntawm 3% -5%, do ntawm chav tsev kub li 2h, kom txog thaum xim av. cov tshuaj tshwm tsaus xim av los yog dub;
(2) PTFE workpiece yuav tsum tau kho yog immersed nyob rau hauv cov kev daws rau li 5 ~ 10min, thiab ces soaked nyob rau hauv lub ** tov rau 3 ~ 5 min;
(3) Tshem tawm lub workpiece los ntawm kev daws, yaug nws nrog dej thiab muab tso rau hauv qhov ntxoov ntxoo kom qhuav ib txwm;
(4) Xaiv epoxy resin, silicone lossis polyurethane ua cov nplaum, sib npaug ntawm qhov chaw kho kom sib koom ua ke thiab sib koom ua ke tam sim ntawd, sawv ntawm 24 ~ 30 ℃ rau 24h, koj tuaj yeem sib cog lus ruaj khov.