Valve xaiv thiab hloov ceev faj Valve xaiv thiab kev teeb tsa cov khoom siv hluav taws xob pov tseg

Valve xaiv thiab hloov ceev faj Valve xaiv thiab kev teeb tsa cov khoom siv hluav taws xob pov tseg

Qhov tseem ceeb ntawm kev xaiv valve kev hloov kho valve xaiv yog nyob ntawm kev siv qhov nruab nrab, qhov kub thiab txias, siab ua ntej thiab tom qab lub valve, ntws, lub cev thiab tshuaj lom neeg ntawm qhov nruab nrab thiab qib ntawm kev huv huv ntawm cov ntaub ntawv xws li kev txiav txim siab zoo. Valve qauv xaiv ntawm qhov raug thiab kev tsim nyog, ncaj qha ntsig txog kev siv kev ua haujlwm, tswj kev ua haujlwm, tswj kev ruaj ntseg, thiab kev pabcuam lub neej.
Qhov tseem ceeb ntawm kev xaiv valve
Kev xaiv ntawm cov qauv valve yog nyob ntawm kev siv qhov nruab nrab, qhov kub thiab txias, siab ua ntej thiab tom qab lub valve, ntws, lub cev thiab cov khoom siv tshuaj lom neeg ntawm qhov nruab nrab thiab qhov huv ntawm qhov nruab nrab thiab lwm yam. Valve qauv xaiv ntawm qhov raug thiab kev tsim nyog, ncaj qha ntsig txog kev siv kev ua haujlwm, tswj kev ua haujlwm, tswj kev ruaj ntseg, thiab kev pabcuam lub neej.
Valve xaiv yuav tsum tau ua raws li cov ntaub ntawv kev ua haujlwm
I. Txheej txheem parameter:
1. Lub npe nruab nrab.
2, nruab nrab ntom ntom, viscosity, kub, nruab nrab huv si (nrog cov khoom me me).
3, lub cev thiab tshuaj lom neeg cov khoom ntawm nruab nrab: xws li corrosion, toxicity, acid thiab alkaline.
4, nruab nrab ntws: kuj loj, ib txwm, me me.
5, media valve ua ntej, tom qab lub valve siab: kuj loj, ib txwm, me me.
6. Qhov nruab nrab viscosity, qhov viscosity ntau dua, qhov Cv tus nqi ntau dua ntawm kev suav.
Cov PARAMETERS no yog siv los xam qhov loj ntawm lub valve, Rated Cv nqi, thiab cov khoom tsim nyog rau lub valve.
Ob, functional parameters:
1. Hom kev txiav txim: hluav taws xob, pneumatic, electro-hydraulic, hydraulic.
2, valve muaj nuj nqi: kev cai, txiav tawm, kev cai thiab txiav tawm kev sib koom.
3, tswj hom: positioner, solenoid valve, siab txo valve.
4. Lub sijhawm ua haujlwm yuav tsum tau ua.
Qhov no ntawm qhov tsis yog tsuas yog siv los txiav txim siab txog kev ua haujlwm ntawm lub valve yuav tsum tau teeb tsa nrog qee yam khoom siv.
Peb, tawg-pov thawj tiv thaiv tsis:
1, tawg-pov thawj qib.
2. Kev tiv thaiv qib.
4. Ib puag ncig thiab dynamic tsis:
1. Ambient kub.
2, lub zog tsis muaj zog: cua siab, lub zog siab.
Kev ceev faj rau kev hloov lub valve
Yog tias lub valve yuav tsum tau hloov, cov kev ntsuas me me hauv qab no yuav tsum tau muab los ua kom tsis txhob muaj lub valve tsis tuaj yeem ntsia tau, lossis qhov chaw tsis txaus vim qhov tsis sib xws ntawm cov tuam txhab valve, lossis cov qauv siv sib txawv, lossis cov qauv valve sib txawv.
Raws li cov cuab yeej pabcuam ntawm cov khoom siv hluav taws xob pov tseg hluav taws xob tsim hluav taws xob ntawm cov cement kiln, qhov kev xaiv valve thiab kev teeb tsa ntawm qhov kub siab flue valve yog qhov tseem ceeb heev rau kev nyab xeeb, kev lag luam thiab kev ua haujlwm zoo ntawm cov khoom siv hluav taws xob hluav taws xob pov tseg, txawm hais tias nws yog me me ntawm qhov ntau thiab tus nqi. . Qhov kub kub flue valve ntawm pov tseg hluav taws xob hluav taws xob tsim hluav taws xob ntawm cov cement kiln yog qhov sib txawv ntawm cov khoom siv hluav taws xob thermal. Tsis muaj teeb meem ntawm qhov kub thiab txias deformation thiab plua plav hnav ntawm cov phaj dav hauv thermal fais fab nroj tsuag. Feem ntau siv Q235 steel phaj vuam, thiab cov tuab tuab heev, feem ntau hauv qab 6 hli. Yog tias lub valve no tseem siv rau hauv cov khoom siv hluav taws xob hluav taws xob pov tseg, nws raug khi ua rau lub phaj dav deformation, daig, bypass to xau tus nqi loj, nkim ntau cov pa hluav taws xob tib lub sijhawm, kev tswj kev ua haujlwm tsis zoo. SP cub tawg bypass valve txhua
Raws li cov cuab yeej pabcuam ntawm cov khoom siv hluav taws xob pov tseg hluav taws xob tsim hluav taws xob ntawm cov cement kiln, qhov kub thiab txias flue valve tseem ceeb heev rau kev nyab xeeb, kev lag luam thiab kev ua haujlwm zoo ntawm cov hluav taws xob hluav taws xob pov tseg, txawm hais tias nws yog me me ntawm qhov ntau thiab tus nqi. Qhov kub kub flue valve ntawm pov tseg hluav taws xob hluav taws xob tsim hluav taws xob ntawm cov cement kiln yog qhov sib txawv ntawm cov khoom siv hluav taws xob thermal. Tsis muaj teeb meem ntawm qhov kub thiab txias deformation thiab plua plav hnav ntawm cov phaj dav hauv thermal fais fab nroj tsuag. Feem ntau siv Q235 steel phaj vuam, thiab cov tuab tuab heev, feem ntau hauv qab 6 hli. Yog tias lub valve no tseem siv rau hauv cov khoom siv hluav taws xob hluav taws xob pov tseg, nws raug khi ua rau lub phaj dav deformation, daig, bypass to xau tus nqi loj, nkim ntau cov pa hluav taws xob tib lub sijhawm, kev tswj kev ua haujlwm tsis zoo. SP cub tawg bypass valve rau txhua txhua 1% huab cua to, hluav taws xob tso zis poob los ntawm 0.6%, yog li nws yuav tsum tau nruj me ntsis tswj, tus tsim yuav tsum tau bypass dav cua to ntawm 1%, kuj loj yuav tsum tsis txhob ntau tshaj 1.5%, tab sis qhov tseeb qhov teeb meem. yog deb tshaj 1.5%, qee qhov txawm mus txog 5%. Qhov nce ntawm qhov to ntawm AQC rauv bypass valve yuav txo tau qhov zoo ntawm flue roj.
Nrog rau kev sib tw hnyav zuj zus nyob rau hauv cov khoom lag luam ntawm cov cement kiln khib nyiab hluav taws xob hluav taws xob tsim hluav taws xob valve, raws li cov khoom lag luam tsis zoo, qhov zoo ntawm cov khoom kub kub flue valve yog qhov tsis sib xws, thiab qee qhov yuav txhob txwm nyias nyias lub thickness ntawm lub cev dav thiab dav phaj. . Txawm tias qee qhov dav dav yog 20 boiler steel, lub sijhawm ntev yuav xeb kom tuag. Vim yog qhov chaw ua haujlwm siab, lub voj voog ntev ntev thiab kev thauj mus los siab ntawm cov pa roj valve, tus nqi ntawm kev hloov lub valve yog qhov loj, yog li nws yuav tsum raug xaiv raws li cov txheej txheem txheej txheem ntawm lub valve [1]. Tam sim no tus sau ntawm ib tug xov tooj ntawm pov tseg tshav kub tsim system valve installation thiab txij nkawm kev. Cov ntsiab lus ntawm kev xaiv valve thiab installation.
1, kub flue valve xaiv
1.1 AQC rauv valve
(1) inlet valve
Lub inlet valve yog teem nyob nruab nrab ntawm lub qhov hluav taws xob thiab lub rooj sib hais chamber ntawm lub grate txias. Nws yuav tsum tau hais tias lub valve muaj kev tswj hwm kev ua tau zoo thiab txhim khu kev qha ua haujlwm los kho cov pa luam yeeb ntim ntawm qhov hluav taws xob ntawm lub qhov cub txias. Kev tsim hluav taws xob pov tseg feem ntau yog ua nyob rau pem hauv ntej ntawm lub grate txias. Tus qauv tsim kub yog 300 ~ 360 ℃, thiab nws tuaj yeem ncav cuag ntau tshaj 450 ℃ thaum qhov kub thiab txias yog qhov siab. Nyob rau tib lub sijhawm, cov pa nruab nrab ntawm grate txias muaj clinker plua plav nrog qhov siab tsis tshaj 30mg / m3 (tus qauv). Qhov ceev yog feem ntau 8 ~ 15m / s. Lub zog scour ntawm lub valve phaj yog loj heev. Yog li ntawd, lub phaj valve yuav tsum muaj kev hnav zoo ntawm qhov kub thiab txias los txhim kho lub neej kev pab cuam ntawm lub valve.
Lub valve tuaj yeem xaiv ib puag ncig lossis square raws li qhov xwm txheej tiag tiag, qhov twg qhov kub thiab txias tsis ruaj khov, thiab lub thickness ntawm grate txias lub txaj ncaj qha cuam tshuam rau kev hloov pauv ntawm cov pa kub. Raws li tus neeg siv, qhov kub ntawm no yog txog 450 ℃ ntev, tab sis qee zaum txog 650 ℃, thiab tuaj yeem tswj tau li 2h. Valve daim hlau nrog tsim kub ≤450 ℃ yuav tsum tau ua los ntawm 16Mn los yog No. 20 boiler steel. Valve daim hlau nrog tsim kub ≥600 ℃ yog ua los ntawm 304 stainless hlau. Ob cov ntaub ntawv ntawm lub valve phaj ntawm qhov kub thiab txias txhua yam khoom yuav luag tsis muaj, tsis hais txog kev hnav zoo. Los ntawm qhov chaw mus ntsib thiab cov neeg siv cov lus tawm tswv yim, peb paub tias thaum qhov kub tsis tshaj qhov tsim qauv, lub neej kev pabcuam dav dav yog 1-2 xyoo, yog tias qhov kub siab tshaj qhov tsim ntau, lub neej kev pabcuam yog ** ib nrab xyoo. Yog li ntawd, lub phaj valve yuav tsum siv vuam degree tortoiseshell mesh, flexural txhaj tshuaj nrog lub siab kub qauv lub zog, tsis tshua muaj kub creep npaum li cas, me me thermal expansion, muaj zog tiv taus tshuaj yaig, thermal shock kuj thiab lwm yam zoo ntawm flexural txhaj khoom, tom qab kub kub ci. kev kho mob muaj qhov kub thiab txias tsis kam thiab hnav tsis kam, ua kom lub neej ua haujlwm ntev. Kev tiv thaiv hluav taws xob hluav taws xob tuaj yeem ua tiav los ntawm kev ua kom ntev ntawm yama ncej thiab vuam ib daim hlau nyias ntawm tus actuator thiab lub valve txuas pas nrig.
Valve xaiv:
Daim ntawv qauv: hom louver;
Daim ntawv txuas: taub qab vuam, flange;
Cov dej xau: 1.5% ~ 2%;
Haum nruab nrab siab: 0.1MPa;
Cov khoom siv lub cev: No. 20 boiler steel hauv ob sab phlu tshav kub rwb thaiv tsev cov ntaub ntawv thiab kub kub thiab hnav tsis kam torsion txhaj tshuaj;
Valve phaj zoo: No.
Yan ncej khoom: 2crl3, 304 stainless hlau.
Lub thickness ntawm lub castable yuav tsum tau qhia rau lub valve chaw tsim tshuaj paus yog hais tias cov yeeb nkab yog lined nrog saj zawg zog filling cov ntaub ntawv. Txhawm rau kom tsis txhob muaj lub valve ntsia tom qab lub phaj valve ntaus cov yeeb nkab torsion txhaj cov khoom thiab tsis tuaj yeem qhib. Lub cev ntawm VALVE yuav tsum tau coated nrog tib lub thickness ntawm rwb thaiv tsev thiab puas resistant flex cov ntaub ntawv raws li cov yeeb nkab. Qhov zoo ntawm qhov no yog tias cov dej ntws tsis turbulent. Tsis txhob ntau dua scour ntawm lub cev thiab disc los ntawm cov pa pa. Lub rwb thaiv tsev txheej thiab hnav-resistant flexure pub txo cov cua kub ntawm lub valve lub cev.
(2) Bypass valve thiab cua txias valve
Lub bypass valve yog nyob nruab nrab ntawm tus Tsov tus tw ntawm lub grate txias thiab lub electrostatic precipitator, thiab cov cua txias valve yog nyob rau hauv pem hauv ntej ntawm lub settling chamber rau cua txias. Qhov seem cua kub ntawm lub taub hau lub taub hau hloov pauv tau zoo heev (180 ~ 500 ℃), lub sij hawm hloov pauv yog luv, thiab lub bypass tswj valve ua haujlwm nquag. Thaum lub tshuab hluav taws xob tsim hluav taws xob ntau dhau lawm, qhov kub ntawm lub tshuab hluav taws xob superheated poob qis, thiab lub bypass regulating Yan yog qhib kom txo cov pa taws ntawm lub boiler hauv lub taub hau kiln. Xyuas kom ruaj ntseg system. Txawm hais tias qhov kub ntawm AOC lub cub tawg los ntawm cov pa tso pa tsis siab, qhov tso pa tawm ntawm lub phaj phaj nce tom qab nws tau txhuam thiab hnav los ntawm clinker plua plav. Hauv qhov xwm txheej hnyav, lub phaj valve yuav poob tawm, ua rau muaj huab cua loj hauv lub cev, ua rau txo qis ntawm evaporation ntawm AOC rauv. Thaum qhov kub ntawm cov pa luam yeeb tuaj txawv teb chaws siab dhau lawm, cov cua txias ntxiv rau hauv chav tsev los ntawm cov cua txias valve. Lub valve yuav tsis hnav tawm, tab sis tus nqi xau yog loj, uas yuav txo qhov zoo ntawm cov roj flue. Yog li ntawd, ob lub valve no yuav tsum muaj lub foob zoo.
Daim ntawv qauv: ib phaj, hom louver;
Daim ntawv txuas: taub qab vuam, flange;
Kev xau tus nqi: ib phaj 1%, kaw hom 1.5% ~ 2%;
Haum nruab nrab siab: 0.1Mpa;
Kev pabcuam kub: ≤450 ℃;
Khoom siv lub cev: No. 20 boiler steel;
Valve phaj zoo: 16Mn;
Valve ncej khoom: 20Crl3.
Nws tau pom zoo kom siv ib lub phaj valve phaj (lub shutter hom xau tus nqi yog siab), thiab txhim kho kev ua haujlwm raug, tus nqi xau yog tswj tsis pub dhau 1%, lub bypass valve yuav tsum ntxiv dag zog rau hnav tsis kam thiab corrosion kuj, txo cov cua bypass. Lub ntim ntim thaum lub boiler khiav.
(3) lub qhov hluav taws xob valve
Lub qhov hluav taws xob lub qhov hluav taws xob nyob nruab nrab ntawm lub qhov cub thiab lub tshuab hluav taws xob electrostatic, qhov twg cov pa roj cua kub feem ntau qis dua 360 ℃, qhov kub hloov pauv me me, plua plav hnav tsis muaj zog, thiab lub valve qhib thiab kaw ua haujlwm tsawg dua. Raws li ib txwm muaj, nws yog nyob rau hauv lub xeev qhib, thaum lub AQC lub cub tawg tu, lub valve raug kaw. Lub valve yuav tsum muaj kev sib khi zoo thaum kaw kom ntseeg tau tias boiler tu thiab cov neeg ua haujlwm nyab xeeb.
Valve daim ntawv: ntxig phaj;
Daim ntawv txuas: taub qab vuam, flange;
Cov dej xau: ≤0.5%;
Haum nruab nrab siab: 0.1Mpa;
Kev pabcuam kub: 330 ~ 450 ℃;
Khoom siv lub cev: No. 20 boiler steel;
Valve phaj zoo: 16Mn:
Valve ncej khoom: 20Crl3.
Lub valve yog tsim los ua cov qauv ntsaws valve, cov khoom siv kis tau tus mob siv hom sprocket, kom tsis txhob muaj lub valve vim cov hmoov tshauv txuam los ntawm lub valve qhib thiab kaw valve phaj deformation, qia dabtsi yog khoov lossis hlawv tawm hluav taws xob actuator tsis ua haujlwm. Nws yuav tsum tau muab sau tseg hais tias ib txheej ntawm phau ntawv ntsaws valve thiab rigid impeller feeder yuav tsum tau teem nyob nruab nrab ntawm lub settling chamber thiab lub zipper tshuab kom tsis txhob muaj cov plua plav loj nyob rau hauv lub boiler lub nres ua hauj lwm. Ntawm no qhov kub thiab txias yog siab txog 450 ℃, yog li lub impeller feeder valve lub cev thiab lub cev muaj zog kev twb kev txuas hom yog txuas nrog coupling, nyob rau hauv thiaj li yuav tiv thaiv lub bin los ntawm poob rau hauv txawv teb chaws lub cev daig nyob rau hauv lub unloader impeller. Hauv lub cev kub hnyiab, cov khoom siv tiv thaiv qhuav dhau yog siv los hloov tus pin kev ruaj ntseg hauv cov khoom. Nyob rau tib lub sijhawm, lub plhaub sab saum toj ntawm lub impeller yog nruab nrog qhov ntsuas qhov, lub valve ncej yog lengthened, bearing yog sab nraud, thiab lub qhov refueling ntxiv, thiaj li yuav txo tau qhov txhaum los ntawm cov khoom daig thiab kub.
(4) superheater valve
Lub superheater valve feem ntau yog teem nruab nrab ntawm lub hauv ntej kawg ntawm lub grate txias thiab lub superheater, qhov twg cov pa roj kub yog feem ntau 500 ~ 650 ℃, thiab cov plua plav cov ntsiab lus yog 30mg / m3 (tus qauv). Tam sim no, lub tuam tsev tsim khoom ntxiv tsawg dua superheater tsim.
Kev tsim qauv ntawm lub valve yog louvered, lub valve phaj yog 304 stainless hlau. Raws li cov neeg siv, qhov kub ntawm no feem ntau yog khaws cia ntawm 650 ℃, thiab ntau zaus, nws tuaj yeem ncav cuag 900 ℃. Vim hais tias lub valve yog raug rau flue roj kub, corrosion thiab yaig yog tshwj xeeb yog hnyav. Lub neej ua haujlwm luv heev. Yog li ntawd, lub valve lub cev yuav tsum tau nchuav nrog cov khoom siv hluav taws xob rwb thaiv tsev thiab castable ntawm tib lub thickness raws li cov raj xa dej kom ntseeg tau tias cov huab cua tsis muaj zog. Qhov zoo ntawm lub valve phaj yog qhov tsawg, thiab 304 ob-sided welding tortoise plhaub mesh yuav tsum tau siv los cam khwb cia kub thiab hnav tsis kam castable kom ntseeg tau tias kev tswj hwm ntawm lub valve thiab kev ua haujlwm ib txwm muaj ntawm cov kab txuas txuas.
Valve daim ntawv: hom louver;
Daim ntawv txuas: taub qab vuam, flange;
Cov dej xau: 1.5% ~ 2%;
Haum nruab nrab siab: 0.1MPa;
Kev pabcuam kub: 450 ~ 650 ℃;
Cov khoom siv lub cev: No. 20 boiler steel hauv ob sab phlu tshav kub rwb thaiv tsev cov khoom thiab kub kub thiab hnav resistant castable;
Valve phaj: 304 stainless hlau lined nrog kub thiab hnav resistant castable;
Fujian ncej khoom: 304 stainless hlau.