Thinner gaskets muaj ntau yam zoo:
• Kev tawm tsam ntau dua vim yog qhov chaw me me ntawm qhov sib txawv ntawm qhov nruab nrab sab hauv.
• Txo qis dua tus nqi dua vim yog qhov me me ntawm qhov hla ntu.
• Lub zog compressive zoo dua thiab yog li ntawd siab dua gasket nto loads (siab) tuaj yeem siv tau zoo rau cov roj hmab nyias nyias.
• Zoo dua fastener torque tuav vim qhov qis qis dua cov yam ntxwv ntawm cov roj hmab nyias nyias.
• Tus nqi qis ntawm lub gasket nws tus kheej.
Raws li tau hais los saum toj no, cov roj hmab tuab ua tau zoo dua rau kev puas tsuaj los yog warped flanges, vim hais tias lub gasket lub peev xwm los sau flange irregularities yog raws li tus nqi ntawm gasket compression ntawm ib tug muab load.
Txij li thaum compressibility ntawm ib tug par ticular load feem ntau qhia raws li ib feem pua ntawm cov gasket thawj thickness, ib tug thicker gasket nrog ib tug loj thawj thickness yeej compresses ib tug loj nyob deb. Piv txwv li, 10 feem pua compression ntawm 1.0 mm gasket txhais tau hais tias compression ntawm 0.1 hli. Hauv 10 feem pua compression ntawm 3.0 hli gasket, lub gasket yuav compress rau 0.3 hli. Qhov no gasket compression ntxiv txhais tau hais tias lub thicker gasket yuav sau-nyob rau hauv ntxaum khawb los yog tsawg me ntsis zoo dua lub thinner gasket. Ib qho piv txwv ntawm gasket thickness hloov nyob ntawm seb gasket compressibility yog qhia rau 1.0 thiab 2.0 hli tuab gaskets hauv Char t 1.
Txawm li cas los xij, qhov zoo ntawm kev siv lub gasket tuab tuaj yeem ua rau tsis meej pem. Thaum lub thicker gasket seals ntau flange irregularities, nws kuj tuaj yeem ua rau lwm yam teeb meem. Lub thicker gasket cuam tshuam ntau dua los ntawm tshav kub, yog li muaj kev nkag siab ntau dua. Qhov kev hloov ntawm qhov chaw siab tom qab nthuav tawm lub gasket rau qhov kub thiab txias rau ob lub gaskets ntawm qhov sib txawv thicknesses yog qhia nyob rau hauv Char t 2. Yog hais tias lub gasket yog loaded nrog 220 MPa thiab raug rau qhov kub siab ntawm 10 0 degree rau 4 teev, qhov seem gasket nto siab rau 1.0 hli tuab gasket yuav yog 210 MPa thiab rau 2.0 hli tuab gasket 190 MPa (rau ib tug nruj ntawm 500 kN / mm). Qhov ntawd txhais tau hais tias cov roj gasket tuab tau poob ntau dua qhov siab ntawm lub gasket, uas tuaj yeem ua rau lub neej luv luv ntawm lub gasket thiab cov pa xau ntau dua thaum lub sijhawm ua haujlwm. Qhov poob ntawm gasket nto siab yog qhov pom tseeb ntawm qhov kub siab dua.
Lub gasket thicker kuj muaj lub zog compressive qis thiab yog li qhov siab tshaj plaws gasket nto load uas lub gasket tuaj yeem raug rau yam tsis muaj kev puas tsuaj tsawg dua. Qhov no siv tau rau ob qho tib si hauv chav tsev thiab qhov kub siab. Qhov siab tshaj plaws saum npoo uas tuaj yeem siv rau lub gasket hloov nrog qhov kub thiab txias thiab qhia rau 1.0 thiab 2. rau cov qauv xws li EN 13555.
Fur thermore, kev sib txhuam ntawm lub gasket thiab flange kuj yog ib qho ntawm cov yam ntxwv uas txiav txim siab qhov kev tawm tsam ntawm lub bolted flange sib koom. Kev sib txhuam yog ib qho kev sib txhuam ntawm qhov sib txhuam ntawm qhov chaw gasket thiab flange thiab tag nrho cov ntsia liaj qhov rooj. Vim hais tias nyias gaskets muaj kev nkag siab qis, qhov sib koom ua ke khaws cov ntsia hlau ntau dua, uas ua rau muaj kev nyab xeeb zoo dua.
Thaum kawg, txij li tag nrho cov ntaub ntawv gasket yog permeable rau qee qhov, cov xov xwm tuaj yeem dhau los ntawm lub cev ntawm lub gasket. Thicker gaskets tsim ib txoj hauv kev dav rau permeation tshwm sim, thiab yog li muab cov pa xau ntau dua, tab sis nco ntsoov tias qhov rov qab tuaj yeem tshwm sim. Yog tias lub gasket nyias dhau los ua raws li flange irregularities, cov xov xwm tuaj yeem xau dhau los ntawm lub gasket. Qhov no tuaj yeem ua rau muaj qhov xau ntau dua li nrog cov gasket tuab. Yog li ntawd, flanges uas yog tiaj tus thiab pristine txaus los lis nyias gaskets seal ntau tighter nrog ib tug nyias gasket.
Hom ntawv gasket cov ntaub ntawv thiab cov compressive load muaj, kuj muaj feem xyuam rau lub thickness yuav tsum tau kaw ib tug par ticular ob leeg. Gaskets nrog compressibility ntau dua qhov tseem ceeb yuav tsis xav tau tib lub load raws li nyuaj, tsawg compressible hom los cuam tshuam lub kaw ntom nti.
Qhov no yog vim hais tias ntau compressible gaskets yuav zoo dua los them rau irregularities ntawm lub flange nto, thiab yog li ntawd, thinner gaskets yuav siv tau. Flanges uas yuav tsum tau cov roj hmab tuab tsim teeb meem uas cov chaw tsim khoom gasket tswj tsis tau. Yog li ntawd qhov kev daws teeb meem zoo tshaj plaws yog siv los yog tsim cov flanges nrog cov khoom muaj zog ntau dua, ua kom lub ntsej muag ua kom zoo, thiab siv 1.5 hli lossis txawm 1. 0 hli tuab gaskets thaum twg los tau.
Tsawg tshaj li qhov zoo meej flanges txawm li cas los xij tseem yuav tsum tau muab kaw. Qhov no feem ntau ua tiav los ntawm kev ua tib zoo xav txog txhua qhov kev hloov pauv hauv daim ntawv thov thaum xaiv cov style thiab thickness ntawm cov khoom siv gasket. Nrog koj tus neeg muag khoom gasket rau cov lus qhia tshwj xeeb ntawm txhua daim ntawv thov flange. Kev teeb tsa kom raug, raws li ib txwm muaj, qhov tseem ceeb.
Yog li ntawd, lub gasket yuav tsum tau sib sau ua ke nrog ib tug raug xam thawj zaug gasket siab thiab ntsia siv ib tug zoo installation txheej txheem. Txhawm rau xam qhov tsim nyog lub rooj sib dhos bolt torque rau kev sib txuas flange ncig peb xav kom koj siv txoj kev xam raws li EN 1591 Par t 1, thiab ua keeb kwm yav dhau los rau kev teeb tsa zoo koj tuaj yeem siv European Sealing Association Cov Lus Qhia.