Cov sluice li qub feem ntau pom nyob qhov twg?

Nyob qhov twgcov valvesnquag pom?

Hauv kev tswj cov kua dej, cov sluice li qub yog cov khoom siv zoo tshaj plaws rau kev txiav tawm thiab kev sib txuas xov xwm, ua tsaug rau lawv txoj kev ncaj nraim thiab cov kua dej tsawg tsawg thaum qhib tag nrho.Kev nkag siab txog qhov tseeb ntawm qhov kev teeb tsa ntawm sluice li qub tsis tsuas yog pab txhawb cov qauv xaiv tab sis kuj pab kom tsis txhob muaj kev ua haujlwm tsis zoo los ntawm qhov chaw tsis raug. Raws li cov kev coj ua hauv kev lag luam xws li AWWA C500 tus qauv thiab ISO 5752 lub ntsej muag -mus rau-faj qhov kev cai, tsab xov xwm no tau nthuav tawm cov ntawv thov nyob rau hauv qhov chaw ntawm lub qhov dej thiab teb ob qhov kev txhawj xeeb ntawm cov neeg siv.

 

Hom Kev Txhim Kho Qhov Chaw ntawm Sluice Valves

1. Municipal Water Supply Pipe Networks and Distribution Systems

Sluice li qub yog ze li ntawm ubiquitous nyob rau hauv lub municipal dej system. Tsis yog - nce qia sluice li qub nyob rau hauv DN150 ~ DN1200 specifications yog dav ntsia ntawm nodes ntawm txhua lub kav dej loj, ceg yeeb nkab txuas, thiab tswj cov ntsiab lus hauv qab hluav taws kub hydrants. Valves nyob rau hauv xws li cov chaw yuav tsum tau xa bidirectional sealing kev ua tau zoo, nrog lub rooj vag tag nrho retracted los ntawm cov ntws channel nyob rau hauv tag nrho qhib tej yam kev mob. Kev ntsuas cov ntaub ntawv qhia tau hais tias lub siab poob tuaj yeem tswj tau hauv 0.02 bar, sib npaug tsuas yog kev sib txhuam poob ntawm cov kav dej ncaj ntawm tib qhov ntev.

Rau sluice valve daim ntawv thov nyob rau hauv cov dej faib systems, cov li qub no feem ntau ntsia nyob rau hauv underground valve chambers. Nws yog ib qho tseem ceeb uas yuav tau txais kev tiv thaiv kev tiv thaiv -corrosion coatings rau valve stems (xws li, fusion-bonded epoxy hmoov nrog ib tug tuab ntawm ntau tshaj los yog sib npaug rau 250μm) thiab xyuas kom meej txaus torsional rigidity rau ncua valve stems.

 

2. Dej Inlet & Outlet Pipelines thiab Distribution Chambers in Wastewater Treatment Plants

Thoob plaws hauv cov txheej txheem kev kho dej khib nyiab, cov sluice li qub tau txais yuav kom paub qhov nruab nrab ntawm kev sib cais thiab kev hloov pauv hauv cov kab nkag hauv qab cov ntxaij vab tshaus, cov dej faib cov kav dej ntawm cov dej xau, thiab hloov cov kav dej ntawm cov sludge digestion tanks. Muab hais tias cov dej phwj tuaj muaj fiber ntau, cov khoom siv thiab cov roj corrosive xws li H₂S, sluice li qub tau thov ntawm no feem ntau yog nruab nrog 304 lossis 316 stainless hlau rooj vag, thaum lub cev valve yog ua los ntawm cov khoom siv cob -kab hlau nplaum (QT500-7).

Raws li kev ua haujlwm thiab kev saib xyuas cov ntaub ntawv, tag nrho -stroke qhib thiab kaw ua haujlwm 1 mus rau 2 zaug hauv ib hlis tuaj yeem tiv thaiv cov av nkos thiab ua kom ruaj khov ntawm cov rooj vag thiab cov rooj zaum, uas tuaj yeem ua rau lub pob valve. Rau lub rooj vag valve installation nyob rau hauv cov dej khib nyiab, thaum mounted nyob rau hauv ib puag ncig ntub, qhov tseeb qhov siab los ntawm hauv av mus rau hluav taws xob actuators los yog handwheels yuav tsum tsis txhob tsawg tshaj li 500mm los xyuas kom meej kev khiav hauj lwm yooj yim rau cov neeg ua hauj lwm.

 

3. Cov Chav Hluav Taws Xob Hluav Taws Xob thiab Cov Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob

Raws li kev ua raws li NFPA 24 cov qauv, qhov nce qia sluice li qub yuav tsum tau muab tso rau ntawm segmentation cov ntsiab lus ntawm lub tsev hluav taws xob lub voj voog kav dej, cov kav dej loj ntawm cov dej tua hluav taws, thiab cov dej hauv qab ntawm cov khoom siv ntawm cov twj tso kua mis.

Handwheels ntawm xws li hluav taws kub- ntsuas sluice li qub tau qhia meej meej nrog qhib / kaw lub voj voog (piv txwv li, DN150 sluice valve yuav tsum muaj 19 txog 22 tag nrho kev sib hloov rau kev qhib tag nrho), ua kom ceev valve txoj hauj lwm pom zoo thaum muaj xwm txheej ceev. Lub plhaub ntsuas qhov siab ntawm qhov hluav taws kub sluice li qub yog 1.5 npaug ntawm kev ua haujlwm siab, thiab cov khoom sib khi yuav tsum ua haujlwm tsis muaj kev ua haujlwm nyob rau hauv luv luv -lub sijhawm kub siab txog 150℃.

 

4. Muaj Cov Dej Circulating thiab Txias Ntauwd Piping

Hauv cov dej txias ntawm lub zog, tshuaj lom neeg thiab cov txheej txheem kev lag luam, sluice li qub feem ntau yog siv rau hauv lub ntsiab nkag thiab xa rov qab cov kav dej ntawm cov kav dej txias nrog rau kev hla cov kav dej ntawm cov khoom siv hluav taws xob. Raws li cov dej ntws muaj cov tshuaj tiv thaiv corrosion thiab ib qho me me ntawm cov khib nyiab pov tseg, sealing qhov chaw ntawm lub rooj vag feem ntau overlaid nrog tooj liab alloy lossis tag nrho qhwv nrog NBR roj hmab. Tus nqi xau yuav tsum ua raws li Qib A (0.5 × DN mm³ / s) teev los ntawm ISO 5208.

Nws yog ib nqi sau cia hais tias sluice li qub kev khiav hauj lwm nyob rau hauv ib feem qhib tej yam kev mob nrog 15% ~ 20% qhib rau ib lub sij hawm ntev yog nquag vortex yaig nyob rau hauv qab ntws channel. Yog li ntawd, cov chaw lag luam nruj me ntsis yuav tsum muaj cov sluice li qub kom qhib tag nrho lossis kaw tag nrho, thiab txwv tsis pub daim ntawv thov throttling.

 

Ob Cov Lus Nug Ua Haujlwm

Qhov twg sluice li qub feem ntau yuav raug kev txom nyem los ntawm cov teeb meem tsis tuaj yeem?

Ob qho laj thawj tseem ceeb yog waterlogging nyob rau hauv av valve chambers submerging valve qia txiv ntoo, thiab nruab nrab sediments daig nyob rau hauv qab zawj ntawm valve lub cev.

Thaum cov dej ntim tau nkag mus rau hauv lub qhov rooj, cov xov khoob ntawm lub valve stems thiab tooj liab ceev nthuav dav vim yog corrosion, ua rau qhib thiab kaw torque tshaj tus nqi ntsuas. Piv txwv li, qhov kev khiav hauj lwm torque ntawm DN200 sluice valve yog li ntawm 150 txog 200 N·m, thaum corrosive puas yuav thawb nws siab tshaj 500 N·m.

 

Kev daws teeb meem:

Kev Tiv Thaiv Kev Ntsuas: Txhim kho cov twj tso kua dej tsis siv neeg nyob hauv qab ntawm lub tshuab valve kom ntseeg tau tias cov txiv ntoo ntawm lub valve yeej ib txwm siab tshaj cov dej hauv av siab tshaj plaws.

Kev Ntsuas Kev Ntsuas: Rau cov twj tso kua mis, nqus cov qia xov nrog cov roj nplua nyeem xws li WD-40 rau 2 teev, tom qab ntawd siv lub zog hauv theem nrog lub zog torque (nce 30 N·m txhua lub sijhawm ntawm 5 feeb ib ntus) kom tsis txhob valve qia tawg los ntawm kev yuam kev sib hloov.

 

Yuav ua li cas xaiv qia hom (nce qia vs tsis yog-nce qia) raws li qhov chaw teeb tsa?

Nce qia sluice li qub feature upward ncua stems thaum lub sij hawm qhib thiab kaw, tso cai rau cov neeg tsav tsheb ncaj qha saib lub valve raws li txoj cai. Lawv zoo tagnrho rau saum toj no - kev teeb tsa hauv av xws li chav twj tso kua mis thiab cov kav dej. Tsis yog - nce qia sluice li qub tsuas yog tig lub qia yam tsis muaj kev txav ntsug, nyob qhov chaw ntsug qis, ua rau lawv tsim nyog rau faus valve chambers, tunnels thiab qhov chaw kaw.

Cov ntaub ntawv siv: Rau cov sluice li qub ntawm tib lub nominal txoj kab uas hla (DN200), ncua ntev ntawm lub nce qia nyob rau hauv tag nrho qhib tej yam kev mob yog kwv yees li 60% ntawm nominal txoj kab uas hla (nyob ib ncig ntawm 120 hli), thaum tag nrho cov saum toj kawg nkaus qhov siab ntawm tsis yog - nce qia sluice li qub tseem nyob tas li. Yog li ntawd, tsis yog - nce qia tsim yog yuav tsum tau rau kev soj ntsuam chamber nrog ntsug clear space tsawg dua 800mm.

 

Cov Lus Pom Zoo & Cov Lus Qhia Txog Kev Ntseeg

Raws li 2022 kev tshuaj xyuas tau muab los ntawmValve ntiaj teb, nyob ib ncig ntawm 37% ntawm lub sijhawm ntxov sluice valve tsis ua haujlwm thoob ntiaj teb yog tshwm sim los ntawm corrosion thiab sedimentation tshwm sim los ntawm kev teeb tsa tsis raug. Tsim nyob rau hauv txoj kab nrog ASME B16.34 cov qauv, COVALVE sluice li qub yog tsim los nrog 15℃~ 20℃flow guide bevels ntawm lub valve lub cev hauv qab kom txo cov khib nyiab pov tseg. Lub caij no, ceramic hardfaced sealing nto (hardness Ntau dua lossis sib npaug li 55 HRC) muaj rau kev kho dej khib nyiab loj.

Thaum npaj cov kav dej sib txuas, cov neeg siv tau qhia kom kos cov ncauj lus kom ntxaws txog cov duab kos nrog cov cim qhov chaw ua haujlwm. Qhov kev xyaum no ua tau zoo txo ​​cov nqi ntawm lub neej tag nrho, uas muaj txiaj ntsig ntau dua li tsuas yog nrhiav tus nqi qis.