Hom hom thiab cov yam ntxwv ntawm liquefied tej pob roj cryogenic pob li qub
LNG Cryogenic cov pob muaj peev xwm yuav muab faib ua ntau hom: ntab npas li qub, tsau pob li qub, thiab khiav pob li qub. Ntab pob valve: lub pob tsis txuas rau lub valve qia, tab sis tuaj yeem cia li tawm tsam lub rooj valve raws li kev txiav txim ntawm cov nruab nrab siab. Cov yeeb yam no ua rau cov khoom ntab uas yog qhov zoo tshaj plaws hauv cov teeb meem qis, thiab cov teeb meem pob no yuav ntsib teeb meem kev ruaj khov nyob hauv ib puag ncig muaj zog. Lub pob ntim pob hluav taws xob: lub pob yog tsau rau lub cev valve los ntawm lub valve qia. Lub teeb meem ntawm cov qauv no ua rau cov pob khoom ruaj khov kom pom kev ua tau zoo heev hauv kev kub siab thiab qhov chaw kub. Txij li lub pob yog tsau nyob rau hauv txoj hauj lwm, nws yuav tsis txav mus los vim kev hloov pauv hauv nruab nrab lub zog, yog li ntawd kev sib txig sib luag hauv cov khoom siv hluav taws xob tsis zoo yuav tsis zoo li ntawm pob khoom plaub hau.
Taug qab pob valve: nws ntse sib xyaw ua ke ntawm cov txiaj ntsig ntawm cov khoom ntab thiab tas. Nws tus tsim no tso cai rau lub pob txav nyob rau hauv ib txoj kev ciav hlau, uas tsis tuaj yeem tsuas yog ruaj khov raws li kev hloov pauv ntawm lub pob hauv ib puag ncig hluav taws xob tsawg.
Hom LNG Cryogenic Pob Valve tsis yog tsau, tab sis yuav tsum tau hloov kho kom haum raws li cov ntawv thov thiab xav tau. Seb nws yog ntab, tsau lossis taug qab pob valve, txhua hom muaj nws tus kheej tshwj xeeb zoo thiab txwv. Hauv kev siv cov tswv yim, ntau yam kev ua haujlwm tau, thiab kev ua haujlwm nruab nrab, thiab kev ua haujlwm nruab nrab, los xaiv qhov kev nyab xeeb tshaj plaws pob valve hom kom ntseeg tau tias kev ua haujlwm nyab xeeb thiab txuag ntawm cov kab ke.
LNG Cryogenic cov khoom lag luam nyob hauv ib puag ncig hauv qab {}}} degree, thiab cov khoom siv uas tsis yooj yim, cuam tshuam rau kev sib khi ua haujlwm. Lub thermal expansion thiab maub cuam cuam tshuam hauv qhov chaw ntsuas kub tsawg kuj tseem yuav cuam tshuam qhov kev sib txuam ntawm qhov tseeb ntawm ntau yam ntawm lub pob. Txhawm rau kom ntseeg tau, cov ntaub ntawv tshwj xeeb yuav tsum tau siv, xws li cov ntaub ntawv hlau thiab cov khoom siv sib khi tshwj xeeb; Cov qauv tsim qauv yuav tsum txiav txim siab txog cov cawv ntawm qhov kub tsawg kom ntseeg tau kev sib khi thiab ua haujlwm.
Sealing Khoom Xaiv thiab cov yam ntxwv
Cov khoom siv hlau Ausenitic Stainless hlau: nws muaj cov khoom qis tsawg-kub thiab cov qauv kev ruaj khov. Nws tuaj yeem tswj hwm kev ua kom zoo thiab lub zog nyob hauv ultra-dej tsis zoo yog tias nws cov kev nthuav dav kub yog tias qhov sib txawv heev hauv ib puag ncig siab thiab tsawg. Qhov sib txawv no yuav ua rau cov khoom siv los deform lossis tawg thaum qhov kub hloov pauv, yog li cuam tshuam cov nyhuv seading ntawm lub valve.
Cov hlau ferritic stainless: Nws tau paub txog nws lub zog siab thiab Hardness, thiab muaj cov txiaj ntsig zoo hauv kev kub siab thiab hnav. Txawm li cas los xij, qhov tsawg-qhov kub ntawm ferritic stainless hlau yog tus tsis zoo, thiab nws yog nquag mus rau brittle buritecture nyob rau hauv ultra-dej kub. Qhov kev tsis zoo no txwv nws siv nyob rau hauv qee yam kev thov daim ntawv thov uas yuav tsum muaj cov ntaub ntawv kev sib nraus siab.
Lwm cov khoom siv hlau: alloys alloys, titanium alloys, thiab lwm yam. Kuj tseem yog cov ntaub ntawv lng rau lng ultra-tsawg pob hluav taws li qub. Cov ntaub ntawv no muaj cov khoom siv corrosion zoo heev thiab cov neeg kho tshuab hauv ultra-tsawg kub ib puag ncig, tab sis lawv cov kev txwv zoo rau lawv daim ntawv thov.
Cov ntaub ntawv tsis yog xim hlau
Ntawm cov ntaub ntawv sealing ntawm LNG cryogenic npas pob, tsis yog xim hlau cov ntaub ntawv muaj ib qho chaw vim lawv cov khoom tshwj xeeb. Xws li polystetrafluoroethylene (PTFE), roj hmab, polytrifluorocloroethylene, thiab lwm yam, cov khoom sib txawv muaj cov yam ntxwv sib txawv thiab cov khoom siv sib txawv. Polytetrafluoroethylene (PTFE): Nrog nws cov tshuaj ruaj khov zoo thiab corrosion tsis kam, nws tseem tuaj yeem tswj kev sib khi tau zoo hauv ultra-tsawg kub ib puag ncig. Txawm li cas los xij, cov ntaub ntawv no feem ntau ua nyuaj ua nyuaj thiab khov rau hauv cov kev mob kub uas tsis muaj qhov kub thiab txias. Roj Hmab: Nws tau nyiam xim vim nws txoj kev elasticity zoo thiab kev ua yeeb yam zoo. Txawm li cas los xij, cov roj hmab nyhav poob nws cov elasticity nyob rau hauv tsawg ib puag ncig ib puag ncig thiab hloov mus rau hauv lub khob iav, yog li poob nws txoj haujlwm ntsaws ruaj ruaj. Yog li ntawd, thaum xaiv cov roj hmab ua cov khoom siv sealing, yuav tsum muab rau cov roj hmab ntau yam nrog cov ntsuas cua qis dua.
Ntawv Sau Khoom
Los ntawm kev sib txuas cov yam ntxwv ntawm cov hlau thiab cov hlau, cov khoom siv sib xyaw ua ke tau pom cov txiaj ntsig zoo liquefied zoo liquefied ntuj ultra-tsis muaj kub lub pob valve sealing.
Hlau hlau-ceramic muaj cov ntaub ntawv: muaj ntawm ob qho kev sib txawv ntawm cov khoom siv hlau, lawv tsis yog muaj lub zog siab thiab tseem muaj lub siab tawv thiab hnav tsis kam tiv taus ceramic. Nyob rau hauv ultra-tsawg qhov chaw kub, cov khoom siv no tuaj yeem qhia tau zoo sealing kev ua tau zoo thiab ua tau zoo tiv thaiv sab nraud siab thiab hnav.
Polymer-raws li cov khoom siv polymer: nrog clevacy, los ntawm kev sib ntxiv hlau, inorganic fillers thiab lwm yam kev ua tau zoo ntawm cov khoom siv tau txhim kho. Polymer-raws li cov khoom siv polymer tsis tsuas yog khaws tau yooj yim thiab zoo heev corrosion ntawm polymers, tab sis kuj tseem muab hlau lub zog, txhav thiab lwm yam ntxwv. Nyob rau hauv ultra-dej kub kub, nws qhia tau tias kev sib khi tau zoo heev thiab ua tau zoo heev. Txawm li cas los xij, cov khoom siv polymer-raws li cov khoom siv yuav ntsej muag thiab cov teeb meem kev laus hauv cov chaw ntsuas kub tsawg. Yog li ntawd, kev siv zog yog tsim los txhim kho nws qhov qis-kub thiab txuas ntxiv nws lub neej ua haujlwm los ntawm kev hloov kho thiab ntxiv ntawm cov neeg sawv cev nruj.
