Kev nyab xeeb li qub yog ib qho tseem ceeb ntawm kev nyab xeeb khoom siv rau boilers, cov hlab ntsha siab, thiab lwm yam khoom siv hauv siab. Nws txoj kev cia siab rau kev ua haujlwm thiab kev ua tau zoo yog ncaj qha ntsig txog kev nyab xeeb ntawm cov cuab yeej siv thiab cov neeg ua haujlwm, thiab muaj feem cuam tshuam nrog kev txuag hluav taws xob thiab kev tiv thaiv ib puag ncig. Txawm li cas los xij, qee cov neeg siv thiab cov chaw tsim khoom ib txwm xaiv cov qauv tsis raug thaum xaiv tus qauv. Vim li no, kev xaiv ntawm kev nyab xeeb li qub tau txheeb xyuas.
Lub thiaj li hu ua kev ruaj ntseg valve muaj xws li nyem valve nyob rau hauv ib tug dav txoj kev xav, los ntawm lub foundations ntawm kev tswj cov kev cai, ncaj qha ntsia rau ntawm lub chav boiler los yog ib hom ntawm lub siab lub nkoj, qhov tsim nyog yuav tsum tau pom zoo los ntawm lub technical saib xyuas ntawm lub department. valve, nyob rau hauv ib tug nqaim txiav txim siab hu ua kev ruaj ntseg valve, thiab lwm yam yog feem ntau hu ua lub nyem valve. Kev nyab xeeb valve zoo ib yam li cov hlab ntsha hauv cov qauv thiab kev ua tau zoo, ob qho tib si uas tau tso tawm sab hauv nruab nrab thaum qhib siab tshaj, thiaj li ua kom muaj kev nyab xeeb ntawm cov nroj tsuag ntau lawm. Muaj qhov tseem ceeb zoo sib xws ntawm cov stems, thiab tib neeg feem ntau tsis meej pem thaum lawv siv lawv, thiab ntxiv rau, qee cov cuab yeej tsim khoom kuj tau sau tseg tias ob qho tib si tuaj yeem siv rau hauv cov cai. Raws li qhov tshwm sim, qhov sib txawv ntawm ob feem ntau raug saib xyuas. Raws li qhov tshwm sim, muaj ntau yam teeb meem kev sib koom tes. Yog tias ob qho no yuav tsum tau txhais kom meej meej, lawv tuaj yeem nkag siab raws li cov lus txhais tau teev tseg hauv Tshooj 1 ntawm ASME Code rau Boilers thiab Pressure Vessels:
(l) Kev Nyab Xeeb Valve: Ib qho khoom siv tsis siv neeg siab nyem uas tau tsav los ntawm lub siab zoo li qub ntawm qhov nruab nrab ntawm lub valve. Nws yog tus cwj pwm los ntawm kev ua haujlwm qhib tag nrho nrog qhov qhib tawg. Rau siv nrog roj los yog chav.
(2) ReliefValve (ReliefValve), tseem hu ua nyem valve, yog ib qho khoom siv tsis siv neeg siab nyem uas tau tsav los ntawm lub siab zoo li qub ntawm qhov nruab nrab ntawm lub valve. Nws qhib proportionally raws li qhov siab tshaj qhov qhib quab yuam. Nws yog tsuas yog siv rau kev siv dej.
(3) Kev nyab xeeb nyem valve (SafetReliefValve), tseem hu ua kev nyab xeeb nyem valve, yog lub tshuab tsis siv neeg siab nyem uas tau tsav los ntawm nruab nrab siab. Raws li ntau zaus ntawm kev siv, nws tsim nyog rau ob qho tib si kev nyab xeeb valve thiab nyem valve. Ua piv txwv Nyij Pooj, muaj ob peb lub ntsiab lus tseeb ntawm kev nyab xeeb li qub thiab nyem li qub, thiab cov cuab yeej siv kev nyab xeeb feem ntau siv rau lub zog loj cia siab cov hlab ntsha xws li boilers yog hu ua kev ruaj ntseg li qub, thiab cov uas tau nruab rau hauv cov kav dej lossis lwm qhov chaw yog hu ua lub pob valve. . Txawm li cas los xij, raws li cov kev cai ntawm "Technical Standards for Thermal Power Generation" ntawm Ministry of International Trade thiab Industry of Japan, kev ruaj ntseg li qub tau teev tseg rau qhov tseem ceeb ntawm cov khoom siv kev nyab xeeb, xws li boilers, superheaters, reheaters, thiab lwm yam. rooj plaub uas lub hauv qab ntawm lub siab txo valve yuav tsum tau txuas nrog lub boiler thiab turbine, ib tug nyem valve los yog ib tug ruaj ntseg valve yuav tsum tau muab ntsia. Nyob rau hauv txoj kev no, kev nyab xeeb li qub yuav tsum muaj kev ntseeg siab dua li cov hlab ntsha. Tsis tas li ntawd, raws li cov kev cai ntawm kev tswj cov roj hluav taws xob siab tshaj tawm los ntawm Ministry of Labor thiab cov kev cai ntawm Ministry of Transport thiab cov kev cai ntawm cov koom haum thauj khoom ntawm txhua theem, peb xa mus rau lub valve kev nyab xeeb raws li kev ruaj ntseg valve. guarantees qhov paug tawm, thiab lub valve uas tsis lav qhov paug raws li cov ntshav valve. Hauv Suav teb, txawm tias nws qhib tag nrho lossis micro qhib, nws tau sau npe hu ua kev nyab xeeb li qub.