1Combined daim ntawv thov kev nyab xeeb valve thiab tawg disc
1. Lub bursting disc yog ntsia rau ntawm qhov nkag ntawm qhov kev nyab xeeb valve - qhov zoo tshaj plaws ntawm qhov teeb tsa no yog qhov tawg disc yuav cais cov kev ruaj ntseg valve thiab cov txheej txheem txawv teb chaws, thiab lub kaw lus tsis muaj qhov to.Kev nyab xeeb li qub tsis corroded los ntawm cov txheej txheem kev tshaj tawm, uas tuaj yeem txo tus nqi ntawm kev nyab xeeb li qub.Thaum lub kaw lus overpressures, lub bursting disc thiab lub nyem valve tuaj yeem tawg ib txhij thiab pib relieving siab.Thaum lub kaw lus siab rov qab mus rau qhov qub, qhov kev nyab xeeb valve tuaj yeem raug kaw, zoo heev txo qhov poob ntawm qhov nruab nrab.
2. Lub bursting disc yog ntsia rau ntawm qhov hluav taws xob ntawm qhov kev nyab xeeb valve.Qhov zoo tshaj plaws ntawm qhov kev teeb tsa no yog qhov tawg disc yuav cais cov kev ruaj ntseg valve los ntawm cov pej xeem tso cov kav dej ntawm qhov hluav taws xob.
2 Cov khoom siv overpressure thiab xaiv kev ruaj ntseg accessories
1. Cov khoom siv overpressure
Overpressure - feem ntau yog hais txog kev ua haujlwm siab tshaj plaws hauv cov khoom siv ntau tshaj qhov tso cai ntawm cov khoom siv.Cov cuab yeej overpressure muab faib ua lub cev overpressure thiab chemical overpressure
Lub siab nyob rau hauv cov khoom tsim yog ntsuas siab
Lub cev overpressure - Qhov nce hauv siab tsis yog tshwm sim los ntawm cov tshuaj tiv thaiv hauv nruab nrab qhov twg tsuas yog lub cev hloov pauv.Chemical overpressure - Ib qho kev nce hauv siab tshwm sim los ntawm cov tshuaj tiv thaiv hauv nruab nrab
(1) Cov hom ntawm lub cev overpressure
①Overpressure tshwm sim los ntawm cov khoom tsub zuj zuj hauv cov khoom siv thiab tsis tuaj yeem tawm hauv lub sijhawm;
②Overpressure tshwm sim los ntawm cov khoom nthuav tawm los ntawm tshav kub (hluav taws);
③Overpressure tshwm sim los ntawm instantaneous siab pulsation;lub zog siab hauv zos tshwm sim los ntawm kev kaw nrawm nrawm ntawm lub valve, xws li "dej rauj" thiab "sub rauj";Ntxiv nrog rau qhov kawg ntawm qhov kawg ntawm cov kav dej, chav ua kom txias sai sai, lub tshuab nqus tsev hauv zos, uas ua rau cov pa tawm sai sai mus rau qhov kawg.Ib qho kev poob siab yog tsim, ua rau muaj kev kub ntxhov zoo ib yam li "dej rauj" nyhuv.
(2) Hom tshuaj lom neeg ntau dhau
①Deflation ntawm combustible gas (aerosol) ua rau overpressure
②Txhua yam ntawm cov organic thiab inorganic combustible plua plav combustion thiab tawg ua rau overpressure
③exothermic tshuaj tiv thaiv kev tswj ua rau overpressure
2. Overpressure nyem ntaus ntawv
①Safe tso cai
Cov khoom siv overpressure, cov khoom siv ntawm cov khoom siv kev nyab xeeb tam sim ntawd ua, cov xov xwm overpressure yuav raug tso tawm hauv lub sijhawm los tiv thaiv lub thawv.Nws yog qhov yuav tsum tau ua kom tiav ntau npaum li cas cov xov xwm tsim tawm ib lub sijhawm, thiab qhov chaw nres nkoj tso tawm tuaj yeem tso tawm hauv ib lub sijhawm.Lub siab nyem tus nqi ib lub sij hawm ib chav tsev yog ntau dua li lub siab boost tus nqi, thiab lub siab tshaj plaws siab nyob rau hauv cov khoom yog tsawg tshaj li qhov siab tshaj plaws tso cai ntawm cov khoom.
②Overpressure nyem ntaus ntawv
Lub hauv paus ntsiab lus ntawm kev ua haujlwm yog muab faib ua ob hom: overpressure nyem thiab overtemperature nyem
Common overpressure nyem ntaus ntawv: siab nyem valve thiab bursting disc.
Ua hauj lwm hauv paus ntsiab lus ntawm bursting disc
Thaum lub calibration bursting siab mus txog rau hauv cov khoom, lub bursting disc yuav tawg tam sim ntawd thiab tso tawm channel yuav qhib kiag li.
Qhov zoo:
①rhiab heev, raug, txhim khu kev qha, tsis muaj to.
②Qhov loj ntawm thaj chaw emission tsis txwv, thiab qhov chaw tsim nyog yog qhov dav (xws li qhov kub thiab txias, siab siab, qhov chaw tseeb, muaj zog corrosion, thiab lwm yam).
③Cov qauv yooj yim, kev saib xyuas yooj yim thiab lwm yam tseem ceeb ntawm qhov tsis txaus: cov channel tsis tuaj yeem raug kaw tom qab qhib, tag nrho cov khoom poob.
3 Classification thiab structural yam ntxwv ntawm bursting disc
1. Kev faib tawm ntawm bursting disc
Cov duab ntawm qhov tawg tawg tuaj yeem muab faib ua qhov zoo arch bursting disc (concave compression), anti-arch bursting disc (convex compression), tiaj phaj bursting disc thiab graphite bursting disc.
Lub tshuab tsis ua haujlwm ntawm qhov tawg tawg tuaj yeem muab faib ua tensile tsis ua haujlwm, hom tsis ruaj khov thiab khoov lossis shearing tsis ua haujlwm hom.Lub tensile destructive bursting disc, nrog tensile kev nyuaj siab nyob rau hauv lub diaphragm, yuav muab faib ua: arch zoo tib yam hom, arch groove hom, phaj zawj hom, arch slit hom thiab phaj slit hom.Qhov tsis ruaj khov breakage type bursting disc, compression stress nyob rau hauv lub diaphragm, yuav muab faib mus rau hauv: rov qab arch siv riam hom, rov qab arch alligator hniav hom, rov qab arch siv zawj dabtsi yog khoov los yog shear tsis ua hauj lwm bursting disc, diaphragm shear tsis ua hauj lwm: feem ntau yog hais txog lub tag nrho cov khoom siv, xws li graphite ua los ntawm bursting disc.
2. Hom thiab cov lej ntawm burst discs
(1) Cov yam ntxwv ntawm kev ua haujlwm ntawm kev sib tsoo disc - concave compression, tensile puas, tuaj yeem ua ib txheej lossis ntau txheej, code nrog "L" pib.Kev faib tawm ntawm qhov zoo arch bursting disc: zoo arch zoo tib yam bursting disc, code: LP zoo arch groove hom bursting disc, code: LC zoo arch slotted bursting disc, code: LF
(2) rov qab ua haujlwm txhua yam yam ntxwv - convex compression, instability puas, tuaj yeem ua ib txheej lossis ntau txheej, code nrog "Y" pib.Kev faib tawm ntawm qhov rov qab arch bursting disc: Rov qab arch nrog riam hom tawg disc, code: YD rov qab arch alligator hniav hom bursting disc, code: YE thim rov qab arch cross groove hom (welded) bursting disc, code: YC (YCH) thim rov qab arch nplhaib zawj type bursting disc, code: YHC (YHCY)
(3) Cov yam ntxwv kev ntxhov siab ntawm lub tiaj tus bursting disc - maj mam deformation thiab koov tom qab kev ntxhov siab kom ncav cuag qhov ntsuas siab tensile tsis ua haujlwm, tuaj yeem ua ib txheej, ntau txheej, code nrog "P" pib.Kev faib tawm ntawm cov phaj tiaj tiaj bursting disc: tiaj tus phaj nrog groove hom bursting disc, code: PC tiaj phaj slit hom bursting disc, code: PF (4) Graphite bursting disc Mechanical yam ntxwv ntawm bursting disc - puas los ntawm shear txiav txim.Lub npe: PM
3. ntau yam ntawm tawg disc lub neej yam ntxwv
Tag nrho cov bursting discs yog tsim thiab tsim raws li lub neej kawg, tsis muaj kev nyab xeeb coefficient.Thaum lub sij hawm bursting siab mus txog, nws yuav tawg tam sim ntawd.Nws lub neej kev nyab xeeb feem ntau yog nyob ntawm cov duab ntawm cov khoom, cov yam ntxwv kev ntxhov siab thiab qhov sib piv ntawm qhov siab tshaj plaws kev khiav hauj lwm siab mus rau qhov tsawg kawg nkaus bursting siab - tus nqi ua haujlwm.Txhawm rau kom ntseeg tau tias kev siv lub sijhawm ntev ntawm cov bursting discs, ISO4126-6 tus txheej txheem thoob ntiaj teb Daim Ntawv Thov, kev xaiv thiab kev teeb tsa ntawm cov khoom siv hluav taws xob tawg tau qhia txog qhov ua haujlwm siab tshaj plaws ntawm kev tawg discs ntawm ntau hom.Cov cai yog raws li nram no:
①Ib txwm arch bursting disc - qhov ua haujlwm siab tshaj plaws≤0,7x ua
②zoo arch groove thiab zoo arch slit bursting disc - siab tshaj plaws ua hauj lwm tus nqi≤0,8x ua
③Txhua yam rov qab arch bursting disc (nrog zawj, nrog riam, thiab lwm yam) - qhov siab tshaj plaws ua haujlwm≤0,9x ua
④Pav ca zoo li bursting disc - siab tshaj plaws ua hauj lwm tus nqi≤0,5x ua
⑤graphite bursting disc - qhov ua haujlwm siab tshaj plaws≤0,8x ua
4. Siv cov yam ntxwv ntawm tawg disc
①Cov yam ntxwv ntawm arch normal type bursting disc (LP)
Lub siab tawg yog txiav txim siab los ntawm lub thickness ntawm cov khoom thiab cov kab uas hla, thiab yog txwv los ntawm lub thickness thiab txoj kab uas hla ntawm lub diaphragm.Qhov siab tshaj plaws ua haujlwm siab yuav tsum tsis pub tshaj 0.7 npaug ntawm qhov tsawg kawg nkaus tawg siab.Kev tawg yuav ua rau cov khib nyiab, tsis tuaj yeem siv rau cov nplaim taws thiab tawg lossis tsis pub muaj cov khoom khib nyiab (xws li hauv series nrog lub valve), kev qaug zog tsis kam.Qhov tsis muaj clamping quab yuam nyob ib ncig ntawm lub perimeter yog ib qho yooj yim ua rau ib puag ncig xoob thiab poob tawm, ua rau txo qis ntawm blasting siab.Feem ntau qhov kev puas tsuaj me me yuav tsis cuam tshuam rau lub siab tawg.Haum rau cov khoom siv roj thiab kua
②Tus yam ntxwv bursting siab ntawm groove hom bursting disc (LC)
In ncaj arch siv yog tsuas yog txiav txim siab los ntawm qhov tob tob, uas yog qhov nyuaj rau kev tsim khoom.Qhov siab tshaj plaws ua hauj lwm siab ntawm lub bursting disc yuav tsum tsis txhob ntau tshaj 0.8 lub sij hawm ntawm qhov tsawg kawg nkaus bursting siab.Blasting raws qhov tsis muaj zog groove phua, tsis muaj khib nyiab, tsis tas yuav tsum tau siv lub sijhawm, zoo qaug zog tiv thaiv.Qhov tsis muaj clamping quab yuam nyob ib ncig ntawm lub perimeter yog ib qho yooj yim ua rau lub perimeter kom loosen thiab poob tawm, uas ua rau txo qis blasting siab thiab khib nyiab.Tsuav qhov kev puas tsuaj me tsis tshwm sim hauv qhov zawj, qhov tawg siab yuav tsis hloov pauv loj.Haum rau cov khoom siv roj thiab kua
③Lub bursting siab ntawm ncaj arch slit hom bursting disc (LF) yog tsuas yog txiav txim los ntawm lub qhov sib nrug, uas yog yooj yim rau siv thiab feem ntau siv nyob rau hauv tsawg zaus zaus.Xyuas kom tseeb tias qhov siab tshaj plaws ua haujlwm tsis tuaj yeem tshaj 0.8 npaug ntawm qhov tsawg kawg nkaus tawg siab.Cov tawg me me yuav raug tsim thaum lub sij hawm blasting, tab sis los ntawm kev tsim qauv tsim nyog, tsis muaj cov khoom tawg tuaj yeem tsim tau thiab kev qaug zog tsis zoo yog qhov qub.Qhov tsis muaj clamping quab yuam nyob ib ncig ntawm lub perimeter yog ib qho yooj yim ua rau ib puag ncig xoob thiab poob tawm, ua rau txo qis ntawm blasting siab.Yog tias qhov kev puas tsuaj tsis tshwm sim ntawm tus choj luv, nws yuav tsis ua rau muaj kev hloov pauv loj hauv qhov tawg
1. Lub siab tawg ntawm YD thiab YE bursting disc yog tsuas yog txiav txim siab los ntawm qhov tuab ntawm qhov khoob thiab qhov siab ntawm lub koov.YE hom feem ntau yog siv rau qhov tsis tshua muaj siab.Thaum lub siab tshaj plaws ua hauj lwm siab tsis ntau tshaj 0.9 lub sij hawm ntawm qhov tsawg kawg nkaus blasting siab, lub diaphragm yuav overturn thiab cuam tshuam rau cov hniav los yog lwm yam ntse lug thiab tawg, tsis muaj khib nyiab yuav generated, thiab qaug zog kuj zoo heev.Tom qab txhua qhov blasting ntawm rab riam, rab riam yuav tsum tau kho kom tsis txaus clamping quab yuam los yog kev puas tsuaj rau lub arch nto ntawm lub bursting disc, uas yuav ua rau kom txo tau qhov tseem ceeb ntawm cov bursting siab, thiab loj tshwm sim nyob rau hauv lub tsis ua hauj lwm qhib qhov chaw nres nkoj. .Kev saib xyuas tshwj xeeb yuav tsum tau ua thaum lub sijhawm teeb tsa.Nws tsuas ua haujlwm nyob rau theem roj
2. Qhov siab tshaj plaws ua haujlwm siab ntawm backarch cross groove type (YC) thiab backarch cross groove welded (YCH) bursting disc tsis tuaj yeem ntau tshaj 0.9 npaug ntawm qhov tsawg kawg nkaus bursting siab.Lub blasting raws li qhov tsis muaj zog qhov zawj yog tawg rau hauv plaub li qub, tsis muaj cov khib nyiab, kev qaug zog zoo heev, thiab tsis muaj qhov tawg ntawm cov welded bursting disc tuaj yeem ua tiav.Tsis txaus clamping quab yuam los yog kev puas tsuaj rau lub koov saum npoo ntawm qhov tawg tawg yuav ua rau txo qis ntawm qhov tawg, thiab kev puas tsuaj loj yuav ua rau qhov chaw nres nkoj tsis tuaj yeem qhib.Kev saib xyuas tshwj xeeb yuav tsum tau ua thaum lub sijhawm teeb tsa.Nws tsuas ua haujlwm nyob rau theem roj
3. Qhov siab tshaj plaws ua hauj lwm siab ntawm rov qab arch nplhaib zawj bursting disc (YHC / YHCY) tsis ntau tshaj 0.9 npaug ntawm qhov tsawg kawg nkaus bursting siab.Nws tau tawg raws qhov tsis muaj zog qhov zawj uas tsis muaj cov khib nyiab thiab kev qaug zog zoo.Tsis txaus clamping quab yuam los yog kev puas tsuaj rau lub koov saum npoo ntawm qhov tawg tawg yuav ua rau txo qis ntawm qhov tawg, thiab kev puas tsuaj loj yuav ua rau qhov chaw nres nkoj tsis tuaj yeem qhib.Kev saib xyuas tshwj xeeb yuav tsum tau ua thaum lub sijhawm teeb tsa.Haum rau theem roj thiab kua
4, tiaj phaj zawj hom (PC) cov yam ntxwv ntawm qhov tawg siab feem ntau yog txiav txim siab los ntawm qhov tob ntawm qhov zawj, kev tsim khoom yog qhov nyuaj, tshwj xeeb tshaj yog nyuaj rau qhov siab me me txoj kab uas hla.Qhov siab tshaj plaws ua hauj lwm siab ntawm cov phaj tiaj nrog zawj yog feem ntau tsis ntau tshaj 0.5 npaug ntawm qhov tsawg kawg nkaus tawg siab.Blasting raws qhov tsis muaj zog groove tawg, tsis muaj khib nyiab, tsis muaj qhov yuav tsum tau siv rau lub sijhawm, kev qaug zog tsis zoo yog tsis txaus nyob ib puag ncig clamping quab yuam, yooj yim ua rau ib puag ncig xoob tawm, ua rau txo qis ntawm blasting siab, khib nyiab.Tsuav qhov kev puas tsuaj me tsis tshwm sim hauv qhov zawj, qhov tawg siab yuav tsis hloov pauv loj.Haum rau cov khoom siv roj thiab kua
5, tiaj tus phaj slit tawg tawg disc (PF)②Flat phaj slit yam (PF) yam ntxwv
Feem ntau, qhov siab tshaj plaws ua haujlwm tsis tuaj yeem tshaj 0.5 npaug ntawm qhov tsawg kawg nkaus tawg siab.Cov tawg me me tuaj yeem tsim tawm thaum lub sij hawm blasting, tab sis tsis muaj cov khoom tawg tuaj yeem tsim los ntawm kev tsim qauv tsim nyog, thiab kev qaug zog tsis zoo.Qhov tsis muaj clamping quab yuam nyob ib ncig ntawm lub perimeter yog ib qho yooj yim ua rau ib puag ncig xoob thiab poob tawm, ua rau txo qis ntawm blasting siab.Tsuav qhov kev puas tsuaj me tsis tshwm sim ntawm tus choj ntawm qhov, qhov blasting siab yuav tsis hloov pauv loj.Feem ntau siv nyob rau hauv cov roj theem
Graphite tawg disc
Qhov siab tshaj plaws ua haujlwm tsis tuaj yeem tshaj 0.8 npaug ntawm qhov tsawg kawg nkaus blasting siab, blasting khib nyiab, tsis muaj zog tiv thaiv.Nws muaj kev tiv thaiv corrosion zoo rau ntau yam xov xwm, tab sis tsis tuaj yeem siv rau kev muaj zog oxidizing acid haum rau roj thiab kua theem
4 Cov cai rau npe bursting discs
Hom code txoj kab uas hla - tsim bursting siab - tsim kub kub, xws li YC100-1.0-100 qauv YC, tsim bursting siab 1.0MPa, tsim kub kub 100℃qhia tau hais tias tus tsim bursting siab ntawm bursting disc ntawm 100℃yog 1.0MPa.
Post lub sij hawm: Dec-02-2022