Nyob rau hauv ib puag ncig marine, xaiv txoj cai valve yog qhov tseem ceeb rau kev tswj xyuas cov kua dej kom zoo thiab ua kom muaj kev nyab xeeb thiab siv tau ntev ntawm lub nkoj. Muaj ob hom kev siv li qub hauv kev siv marine yogrooj vag li qubthiabntiaj teb li qub. Thaum ob qho tib si tsim los tswj cov dej ntws thiab cov pa roj, lawv ua haujlwm sib txawv thiab ua haujlwm sib txawv. Kev nkag siab txog lawv qhov sib txawv tuaj yeem pab cov neeg ua haujlwm nkoj ua cov kev txiav txim siab, kom ntseeg tau tias kev ua tau zoo hauv kev xav tau.
1. Tsim thiab ua haujlwm
Rooj vag Valve:
- Lub rooj vag valve ua haujlwm los ntawm kev nce lossis txo lub rooj vag (lossis lub npoo) hauv lub cev valve kom pib lossis nres qhov ntws.
- Nws muab cov dej tsis muaj kev cuam tshuam thaum qhib tag nrho, txo qhov poob siab.
- Qhov zoo tshaj plaws rau kev qhib tag nrho lossis kaw tag nrho cov haujlwm thiab tsis zoo tagnrho rau throttling.
- Cov qauv tsim muaj xws li nce qia thiab hom tsis nce qia.
Globe Valve:
- Lub nres valve siv lub disc uas txav tawm ntawm txoj kev ntws los tswj lossis nres cov kua dej.
- Lub valve tsim tso cai rau kev tswj kom zoo thiab throttling ntawm ntws.
- Nws cov qauv feem ntau suav nrog lub qia uas txav mus rau qhov chaw.
- Muab kev sib khi zoo dua thiab tswj kev ntws, tab sis ua rau muaj kev poob siab dua.
2. Cov ntawv thov hauv Marine Systems
Kev siv lub rooj vag Valve:
- Qhov zoo tshaj plaws rau cov tshuab uas xav tau kev poob siab tsawg, xws li kev siv dej hiav txwv, dej ballast, thiab roj tshuab.
- Siv rau cais cov seem ntawm cov kav dej.
- Haum rau kev tuav cov kua dej ntau nrog kev txwv tsawg.
Kev siv Globe Valve:
- Feem ntau hauv cov tshuab uas xav tau kev tswj xyuas meej, xws li cov kab dej txias, cov roj lubricating, thiab cov ntawv siv chav dej.
- Siv nyob rau hauv cov xwm txheej uas yuav tsum tau throttling los yog maj mam hloov kho.
- Feem ntau ua haujlwm nyob rau hauv bilge thiab ballast systems uas yuav tsum tau tswj kom zoo.
3. Qhov zoo thiab qhov tsis zoo
Rooj vag Valve Advantages:
- Tsawg kawg ntws tsis kam thaum qhib tag nrho.
- Kev tsim kho yooj yim thiab kev saib xyuas qis.
- Durable thiab haum rau high-pressure ib puag ncig.
Rooj vag Valve Disadvantages:
- Tsis haum rau throttling; qhib ib nrab tuaj yeem ua rau yaig thiab puas.
- Kev ua haujlwm qeeb dua piv rau nres li qub.
Globe Valve Qhov Zoo:
- Precise flow control thiab throttling muaj peev xwm.
- Muab cov sealing nruj, txo qhov kev pheej hmoo ntawm kev xau.
- Ua haujlwm zoo nyob rau hauv ntau yam kev mob siab.
Globe Valve Disadvantages:
- Kev kub siab poob vim qhov tsim.
- Kev tsim kho ntau dua, ua rau muaj kev tu ncua ntxiv.
4. Corrosion Resistance thiab xaiv cov khoom siv
Ob lub rooj vag thiab Globe li qub siv nyob rau hauv marine daim ntaub ntawv feem ntau yog tsim los ntawm cov ntaub ntawv uas tiv thaiv corrosion, xws li:
- Bronze- Feem ntau rau kev siv dej hiav txwv.
- Stainless hlau- Muab kev tiv thaiv corrosion zoo heev thiab lub zog.
- Cam khwb cia hlau nrog Epoxy txheej- Siv nyob rau hauv cov txheej txheem tseem ceeb tsawg kom sib npaug nqi thiab kav ntev.
Kev xaiv cov khoom tsim nyog yog qhov tseem ceeb los tiv thaiv qhov hnyav marine ib puag ncig, ua kom lub neej ntev thiab txo tus nqi tu.
5. Kev txiav txim siab tseem ceeb rau cov neeg ua haujlwm hauv hiav txwv
- Flow Requirements:Yog tias qhov poob siab tsawg kawg yog qhov tseem ceeb, cov rooj vag li qub yog nyiam.
- Throttling xav tau:Rau kev tswj xyuas kom meej, nres li qub muab kev ua haujlwm zoo dua.
- Maintenance Access:Nres li qub yuav xav tau kev saib xyuas ntau zaus tab sis muab kev sib khi zoo dua.
- System Design:Xav txog qhov chaw thiab kev taw qhia ntawm cov kav dej thaum xaiv ntawm qhov nce qia los yog tsis nce qia rooj vag li qub.
Post lub sij hawm: Jan-02-2025