Lub ntsej muag tawg (bursting membrane) yog qhov kev tiv thaiv kev tiv thaiv siv hauv cov hlab ntsha siab lossis cov raj xa dej. Nws cov tub ntxhais muaj nuj nqi yog los txhawm rau kom muaj kev sib nqus ntawm qhov teeb tsa siab kom tso cov siab. Cov kev xav tau rau cov khoom siv hlau yuav tsum tau txiav txim siab txog lawv cov khoom siv tshuab, tshuaj lom neeg ruaj khov thiab kev yoog raws kev ua haujlwm. Hauv qab no yog cov tseem ceeb ntawm cov khoom tawg rau cov khoom siv hlau:
1. Cov Kev Ua Tau Zoo Li Cas
Lub zog thiab ductancy tshuav nyiaj li cas
Cov hlau yuav tsum muaj lub zog tensile txaus thiab tawm los tiv thaiv kev ua haujlwm tsis zoo, thiab tib lub sijhawm ua haujlwm tsis raug cai lossis tsis muaj qhov tsis raug cai vim tias tawg tawg.
Yog qhov tawg tau tawg
Cov khoom siv yuav tsum ua kom muaj kev sib xyaw ua ke ntawm qhov teeb tsa lub siab, yog li cov khoom siv tsis zoo, xws li pores sab hauv (xws li qhov ua tau zoo), thiab kev ua tau ruaj khov ntawm cov pob.
2. Corrosion Kuj
Xov Xwm Tshaj Tawm
Cov hlau yuav tsum muaj peev xwm tiv thaiv corrosion los ntawm kev ua haujlwm nruab nrab (xws li acid, alkali, roj, kua). Piv txwv li:
Ib puag ncig corrosive: xaiv haastelloy, titanium (ti) lossis ta).
General Corrosive ib puag ncig: 316L stainless hlau, npib tsib xee-raws li alloy (xws li inconel).
Nto Kho
Yog tias qhov nruab nrab yog corrosive heev, cov hlau yuav tsum tau plated (xws li noickel plating, kub plating) lossis passivated.
3. Qhov kub txav ruaj khov
Qhov Kub Ib puag ncig
Cov khoom siv yuav tsum tau muaj zog ntawm lub zog ntawm cov kub thiab tsis txhob nkag los yog oxidation (xws li nickel-raws li alloys, titanium alloys).
Tsawg Ib puag ncig kub
Tsawg tus neeg kub ua rau yuav tsum zam (xws li kev ua kom muaj kev ua kom tsis muaj roj stainless hlau ua tau zoo dua ntawm cov kub tsawg).
4. Kev qaug zog tiv thaiv
- Yog tias lub kaw lus siab hloov ntau zaus (xws li tshuaj mem tes siab), cov khoom yuav tsum muaj kev qaug zog zoo vim muaj kev thauj mus los.
5. Ua Kev Ua Haujlwm
Muaj meej
Bursting Discs feem ntau yog cov ntawv nyias nyias, thiab cov khoom yuav tsum tau yooj yim rau lub thwj, ncab lossis weld (xws li stainless hlau, txhuas).
Thickness uniformity
Lub thickness kam yuav tsum tau ceev kom nruj thaum lub sijhawm tsim khoom los xyuas kom paub qhov tseeb ntawm qhov tseeb ntawm lub siab tawg.
6. Kev lag luam thiab hloov chaw
- Nyob rau hauv lub neej ntawm kev ua tiav ntawm kev ua tiav cov kev xav tau kev ua tau zoo, muab cov ntaub ntawv muaj txiaj ntsig zoo thiab yooj yim li 304/316 stainless hlau).
- Cov hlau uas muaj nqis (xws li tantalum) yuav raug tseev kom muaj nyob rau hauv cov kev mob tshwj xeeb, thiab tus nqi thiab feem yuav tsum tau ntsuas ntawm lub sijhawm no.
Yam Qauv
ASME BPVC seem VIII: Qhia meej cov qauv xaiv thiab tsim qauv rau tawg cov ntaub ntawv disctsing disc.
API 520/526: Bursting Disc cov ntaub ntawv thiab cov kev teeb tsa ua kom muaj rau kev lag luam petrochemical.
ISO 4126: Cov hau kev xeem rau bursting disc cov khoom siv hauv cov qauv thoob ntiaj teb.
Lub ntsiab
Kev xaiv ntawm bursting disp hlau yuav tsum tau kev soj ntsuam ntau raws li kev ua haujlwm tshwj xeeb (siab, nruab nrab), kev lag luam thiab kev tsim khoom. Cov tub ntxhais yog kom ntseeg tau tias cov khoom tuaj yeem tsoo cov khoom tawg ntawm lub siab thiab qhib ib puag ncig stably rau lub sijhawm ntev. Cov ntaub ntawv lossis cov qauv sib xyaw ua ke (xws li hlau + txheej) yuav raug tsim nyog raws cov cai tshwj xeeb.