Qhov sib txawv ntawm cov hlau nplaum valve thiab cam khwb cia hlau rooj vag Valve kev faib tawm hem lub sealing nto ntawm stainless hlau valve ob peb "kev phem"

Qhov sib txawv ntawm cov hlau nplaum valve thiab cam khwb cia hlau rooj vag Valve kev faib tawm hem lub sealing nto ntawm stainless hlau valve ob peb "kev phem"

Qhov qhib thiab kaw ib feem ntawm cam khwb cia steel rooj vag valve yog lub rooj vag phaj. Cov kev taw qhia ntawm kev txav ntawm lub rooj vag phaj yog perpendicular rau cov kev taw qhia ntawm cov kua. Lub rooj vag valve tsuas yog qhib tag nrho thiab kaw tag nrho, tab sis tsis tuaj yeem hloov kho thiab throttled. Ob lub ntsej muag sealing ntawm lub rooj vag valve yog wedge-puab. Lub kaum sab xis ntawm lub npoo sib txawv nrog lub valve tsis, feem ntau 50, thiab 2 ° 52 'thaum nruab nrab kub tsis siab. Lub rooj vag qhov rooj tuaj yeem ua rau tag nrho, hu ua lub rooj vag nruj; Nws kuj tseem tuaj yeem ua rau hauv lub rooj vag uas tuaj yeem tsim cov kab deformation txhawm rau txhim kho nws cov thev naus laus zis thiab tsim kom muaj qhov sib txawv ntawm lub sealing nto Lub kaum sab xis ntawm kev ua haujlwm. Hom rooj vag no hu ua elastic rooj vag.
Qhov qhib thiab kaw ib feem ntawm cam khwb cia steel rooj vag valve yog lub rooj vag phaj. Cov kev taw qhia ntawm kev txav ntawm lub rooj vag phaj yog perpendicular mus rau cov kev taw qhia ntawm cov kua. Lub rooj vag valve tsuas yog qhib tag nrho thiab kaw tag nrho, tab sis tsis tuaj yeem hloov kho thiab throttled. Ob lub ntsej muag sealing ntawm lub rooj vag valve yog tsim rau hauv ib tug wedge. Lub kaum sab xis sib txawv nrog lub valve tsis, feem ntau 50, thiab 2 ° 52 'thaum nruab nrab kub tsis siab. Lub rooj vag qhov rooj tuaj yeem ua rau tag nrho, hu ua lub rooj vag khov; Nws kuj tseem tuaj yeem ua rau hauv lub rooj vag uas tuaj yeem tsim cov kab deformation txhawm rau txhim kho nws cov thev naus laus zis thiab tsim kom muaj qhov sib txawv ntawm lub sealing nto Lub kaum sab xis ntawm kev ua haujlwm. Hom rooj vag no hu ua elastic rooj vag.
Classification ntawm cam khwb cia steel rooj vag li qub
Cam khwb cia steel rooj vag valve: raws li cov khoom siv, muaj carbon steel rooj vag valve, stainless hlau rooj vag valve, tsis tshua muaj hlau steel rooj vag valve (siab kub resistant chromium molybdenum steel belongs rau pawg no), tsis tshua muaj kub steel rooj vag valve, thiab lwm yam.
Ntau hom cam khwb cia steel rooj vag li qub muaj ntau yam tshwj xeeb steel qib feem ntau siv raws li hauv qab no:
1. Carbon steel rooj vag valve casting qib yog: WCA, WCB, WCC, LCB, thiab lwm yam. Siv tau kub -46 degrees ~ 425 degrees.
2. Stainless hlau rooj vag valve castings: 301 stainless hlau, CF8 stainless hlau (xws li forging 304 stainless hlau), CF8M stainless hlau (xws li forging 316 stainless hlau), thiab lwm yam. Siv tau kub -198 degrees ~ 816 degrees.
3, tsis tshua muaj hlau alloy steel yog muab faib ua high kub alloy steel thiab zoo meej uas tsis muaj alloy steel, cov uas kub kub alloy steel feem ntau hais tias chromium molybdenum hlau.
Chromium molybdenum steel rooj vag valve casting qib: ZG1Cr5Mo, ZG15Cr1MoV, ZG20CrMoV, WC6, WC9, C12A thiab hais txog. Qhov ntsuas kub ntawm 550 txog 750 degrees.
Qhov ntsuas kub siv tau rau txhua qib tshwj xeeb ntawm cov khoom sib txawv, nyob ntawm qhov ua haujlwm tiag tiag.
Gb nominal siab (MPa)
American standard phaus chav kawm (>
Nominal siab ntawm valve
1.62.54.06.410.015030040060090010 KWD
2.43.86.09.615.03.17.810.215.323.13.17.8 lub cev muaj zog ntsuas siab (Mpa)
Kev ntsuas dej siab siab 1.82.84.07.011.02.15.67.511.216.82.15.6 (Mpa)
Tsis tshua muaj siab roj foob kuaj (Mpa) raws li 0.5Mpa ~ 0.7Mpa roj nruab nrab siab ntsuas qhov ntsuas pom.
Kev ntsuas kev ua tau zoo: GB / T13927-2008 lub npe dav dav valve siab ntsuas
Tus qauv tsim: GB / T12234-2007 Lub Npe: Hlau rooj vag li qub nrog lub kaus mom rau kev lag luam roj av thiab cov nkev
Flange kev twb kev txuas: JB / T79-94 Mechanical Ministry flange txuj, GB / T9113-2000 National pom zoo flange txuj, HG / T20592-2009 Tshuaj Ministry flange
Qauv ntev: GB12221-2005 Lub Npe: hlau valve qauv ntev
Nominal txoj kab uas hla: DN15 ~ DN1200mm
Nominal siab: PN10 ~ PN320, 1.0Mpa ~ 32.0Mpa
Handwheel, kov thiab kis mechanism tsis pub siv rau kev nqa, thiab kev sib tsoo yog nruj me ntsis txwv.
Ob chav rooj vag li qub yuav tsum tau mounted vertically (piv txwv li qia nyob rau hauv txoj hauj lwm ntsug nrog handwheel rau saum).
Lub rooj vag li qub nrog bypass li qub yuav tsum tau qhib ua ntej qhib (kom sib npaug ntawm qhov sib txawv ntawm qhov nkag thiab qhov hluav taws xob thiab txo qhov qhib quab yuam).
Lub rooj vag valve nrog kev tsav tsheb yuav tsum tau teeb tsa raws li cov lus qhia ntawm cov khoom.
Lubricate li qub tsawg kawg ib hlis ib zaug yog tias lawv nquag siv rau thiab tawm.
Pipeline ntws, siab, kub tswj ntawm ntau yam kev lag luam automation ntau lawm. Piv txwv li: hluav taws xob fais fab, metallurgy, petrochemical, kev tiv thaiv ib puag ncig, kev tswj hluav taws xob, kev tiv thaiv hluav taws thiab lwm yam. Tau ntev, cov rooj vag dav dav siv hauv kev ua lag luam feem ntau xau lossis xeb. Qee lub tuam txhab qhia txog European high-tech roj hmab thiab valve tsim tshuab los tsim lub rooj zaum elastic lub rooj vag valve, uas kov yeej lub rooj vag valve tsis zoo sealing, xeb thiab lwm yam tsis xws luag. Lub rooj zaum elastic lub rooj vag valve ua rau siv lub rooj vag elastic los tsim ib qho me me ntawm elastic deformation them nyiaj kom ua tiav cov txiaj ntsig zoo. Lub valve muaj qhov zoo ntawm lub teeb hloov, txhim khu kev qha seal, zoo elastic nco thiab kev pab lub neej.
Ob peb "kev phem" uas hem lub sealing nto ntawm stainless hlau li qub
Stainless hlau valve yog hais txog kev siv cov khoom siv stainless hlau ua los ntawm cov li qub. Lub valve yog ib qho khoom siv tswj hauv cov kav dej xa dej. Nws yog siv los hloov cov seem channel thiab cov kev taw qhia ntawm qhov ntws ntawm qhov nruab nrab. Nws muaj lub luag haujlwm ntawm kev hloov pauv, kev txiav tawm, kev tswj hwm, throttling, kos, shunt lossis overflow siab nyem. Li qub rau cov kua dej tswj ntau yam los ntawm lub ntiaj teb yooj yim li qub mus rau li qub siv nyob rau hauv tsis tshua muaj kev tswj tsis siv neeg hauv ntau hom thiab specifications.
Stainless hlau valve thiab yeeb nkab lossis tshuab kev sib txuas yog 304 stainless hlau flange kev twb kev txuas, feem ntau hu ua 304 stainless hlau flange kev twb kev txuas.
Stainless hlau valve txais cov khoom siv stainless hlau nrog kov, turbine, pneumatic, hluav taws xob sib kis qauv, hloov hloov tau yooj yim thiab lub teeb. Compact qauv, lub teeb yuag, yooj yim rau cua sov preservation, yooj yim rau nruab. Kev sib txuas hom: vuam, xov, flange rau cov neeg siv xaiv. Nws muaj kev ua haujlwm zoo sealing thiab corrosion kuj. Stainless hlau li qub txuas ntxiv nqus cov tshuab thev naus laus zis txawv teb chaws, ua ke nrog cov xwm txheej tiag tiag ntawm kev txhim kho hauv tsev, mus rau hauv tsev es tsis txhob tuaj. Siv rau hauv cov roj av, roj av, cua sov, tshuaj lom neeg thiab thermoelectric yeeb nkab network thiab lwm qhov chaw sib kis mus ntev.
Tam sim no nyob rau hauv kev siv stainless hlau li qub, stainless hlau pob valve, rooj vag valve, ntiaj teb valve hauv kev lag luam siv ntau pom tseeb.
Piv nrog rau cov kev lag luam ib txwm muaj, vim muaj kev txwv ntawm cov yam ntxwv ntawm cov qauv, nws tsis haum rau kev kub siab, kev kub siab thiab corrosion kuj, hnav tsis kam thiab lwm yam lag luam. Qhov kev puas tsuaj ntawm txhua yam yog muab faib ua ob pawg ntawm tib neeg tsim thiab kev puas tsuaj ntuj tsim, stainless hlau valve tsis muaj qhov tshwj xeeb, kev puas tsuaj ntuj tsim, yog hnav ntawm lub valve raws li kev ua haujlwm ib txwm muaj. Nws yog qhov kev puas tsuaj los ntawm qhov tsis tuaj yeem tiv thaiv corrosion thiab yaig ntawm lub sealing nto los ntawm qhov nruab nrab, uas feem ntau muab faib ua cov ntsiab lus hauv qab no:
1. Kev txhim kho thiab kev kho tsis zoo
Qhov no ua rau kev ua haujlwm txawv txav ntawm qhov sealing nto, thiab lub valve khiav nrog cov kab mob, ua rau muaj kev sib txhuam thiab kev puas tsuaj ntawm lub sealing nto. Qhov kev ua tau zoo tseem ceeb yog tias lub valve tsis raug xaiv raws li kev ua haujlwm, thiab lub truncation valve yog siv los ua lub throttle valve, uas ua rau lub sealing siab loj heev thiab sealing ceev heev los yog sealing tsis nruj, yog li tias lub sealing nto yog eroded thiab hnav.
2. Kev xaiv tsis raug thiab ua haujlwm tsis raug
Feem ntau tsis yog raws li kev ua haujlwm thiab xaiv lub valve, xws li truncation valve thaum siv lub throttle valve, uas ua rau lub sealing siab dhau lawm thiab sealing ceev heev los yog sealing tsis nruj, kom lub sealing nto los ntawm yaig thiab hnav. Los yog cov cam khwb cia steel valve yog siv nyob rau hauv corrosive media, los yog tsis-kub resistant valve yog siv nyob rau hauv kub kub. Los yog cov khoom siv sib khi dav dav siv rau hauv qhov chaw uas muaj impurities ntau dua thiab kub dua.
3. Kev yaig nruab nrab
Nws yog qhov tshwm sim ntawm kev hnav, ntxuav thiab cavitation ntawm lub sealing nto thaum nruab nrab ua haujlwm. Ntawm ib qho kev ceev, lub planktic nplua hais nyob rau hauv nruab nrab ua txhaum lub sealing nto, ua rau lub zos puas. Lub siab ceev txav nruab nrab ncaj qha ntxuav lub sealing nto, ua rau lub zos puas. Thaum qhov nruab nrab sib xyaw thiab vaporizes, qhov npau taws npau taws ua rau cuam tshuam rau qhov chaw ntawm qhov sib khi, ua rau muaj kev puas tsuaj hauv zos. Kev yaig ntawm qhov nruab nrab ua ke nrog kev hloov pauv ntawm cov tshuaj yaig yuav ua rau muaj kev cuam tshuam rau qhov sealing nto.
4. Electrochemical yaig
Lub sealing nto yog nyob rau hauv kev sib cuag nrog ib leeg, lub sealing nto yog nyob rau hauv kev sib cuag nrog lub sealing lub cev thiab lub valve lub cev, raws li zoo raws li qhov sib txawv concentration ntawm qhov nruab nrab, lub concentration ntawm oxygen thiab lwm yam yog vim li cas, yuav ua rau muaj peev xwm sib txawv, electrochemical yaig. , ua rau yaig ntawm anode sab ntawm lub sealing nto.