II Nees nkaum tsib taboos rau cov khoom qhuav valve installation, koj puas paub ntau npaum li cas?

Taboo 11 Tsis ncaj ncees lawm valve installation txoj kev. Piv txwv li, cov dej (steam) ntws cov kev taw qhia ntawm nres valve los yog kos valve yog opposite rau lub kos npe rau, lub valve qia yog ntsia downward, lub kos valve ntsia horizontally yog ntsia vertically, tus kov ntawm nce qia rooj vag valve los yog npauj npaim valve tsis muaj. qhov chaw qhib thiab kaw, thiab lub valve qia ntawm zais valve tsis fim qhov kev soj ntsuam valve. Yog vim li cas: valve tsis ua hauj lwm, hloov kho teeb meem, stem down feem ntau ua rau dej to. Kev ntsuas: nruab rau hauv nruj raws li cov lus qhia kev teeb tsa valve. Qhov nce qia rooj vag valve yuav tsum muaj lub qia txuas ntxiv qhib qhov siab. Qhov chaw tuav kev sib hloov yuav tsum tau txiav txim siab tag nrho rau lub npauj npaim valve. Lub qia ntawm ntau yam li qub yuav tsum tsis txhob qis dua li txoj haujlwm kab rov tav lossis nqes. Lub zais valve yuav tsum tsis tsuas yog muab nrog ib qho kev soj ntsuam valve raws li qhov yuav tsum tau qhib thiab kaw ntawm lub valve, tab sis kuj lub valve qia yuav tsum fim lub soj ntsuam valve. Taboo 12 Cov kev qhia tshwj xeeb thiab cov qauv ntawm lub valve ntsia tsis tau raws li cov qauv tsim. Piv txwv li, lub nominal siab ntawm lub valve yog tsawg tshaj li qhov system xeem siab; Thaum cov yeeb nkab txoj kab uas hla ntawm cov kav dej kav dej tsawg dua los yog sib npaug li 50 hli, lub rooj vag valve yog siv; qhov nres valve yog siv rau cov kav dej qhuav thiab ntsug ntawm cov dej kub cua sov; npauj npaim valve yog siv rau cov dej nqus cov yeeb nkab ntawm lub twj tso kua mis. Qhov tshwm sim: cuam tshuam rau qhov qub qhib thiab kaw ntawm lub valve thiab kho qhov tsis kam, siab thiab lwm yam haujlwm. Txawm ua rau lub cev ua haujlwm, valve puas raug yuam kom kho. Kev ntsuas: paub txog daim ntawv thov ntawm ntau yam li qub, thiab xaiv cov kev qhia tshwj xeeb thiab cov qauv ntawm cov li qub raws li cov qauv tsim. Lub nominal siab ntawm lub valve yuav tsum ua kom tau raws li qhov yuav tsum tau ntawm qhov system ntsuas siab. Raws li qhov yuav tsum tau ua ntawm kev tsim kho tshwj xeeb: nres valve yuav tsum siv thaum txoj kab uas hla ntawm cov kav dej kav dej tsawg dua lossis sib npaug li 50 hli; Lub rooj vag valve yuav tsum tau siv thaum txoj kab uas hla ntau dua 50mm. Lub rooj vag valve yuav tsum tau siv rau cov dej kub cua sov kom qhuav thiab ntsug tswj valve, thiab npauj npaim valve yuav tsum tsis txhob siv rau hluav taws twj tso kua mis suction yeeb nkab. Taboo 13 Ua ntej lub installation ntawm lub valve, qhov tsim nyog kev tshuaj ntsuam xyuas tsis ua raws li qhov yuav tsum tau ua. Qhov tshwm sim: thaum lub sijhawm ua haujlwm ntawm lub kaw lus, lub valve hloov pauv tsis hloov pauv, qhov kaw tsis nruj thiab qhov tshwm sim ntawm cov dej (steam) leakage tshwm sim, ua rau rov ua haujlwm thiab kho dua, txawm tias cuam tshuam rau cov dej ib txwm muaj (steam). Kev ntsuas: lub zog siab thiab kev ntsuas nruj yuav tsum tau ua ua ntej kev teeb tsa valve. 10% ntawm txhua batch (ntawm tib hom, specification thiab qauv) yuav tsum raug xaiv rau qhov kev xeem, thiab tsis tsawg tshaj li ib. Rau qhov kaw-circuit li qub tau nruab rau ntawm cov yeeb nkab loj kom txiav tawm, kev ntsuas lub zog thiab nruj yuav tsum tau ua ib qho los ntawm ib qho. Lub valve lub zog thiab nruj kev ntsuas siab yuav tsum ua raws li cov cai ntawm kev lees txais kev tsim kho zoo ntawm lub tsev dej thiab dej thiab cua sov engineering (GB 50242-2002). Taboo 14 Cov ntaub ntawv tseem ceeb, cov cuab yeej siv thiab cov khoom siv hauv kev tsim kho yog tsis muaj cov ntaub ntawv qhia txog kev ua haujlwm zoo lossis cov ntawv pov thawj khoom uas ua tau raws li cov qauv tam sim no los ntawm lub xeev lossis Ministry. Yog vim li cas: qhov project zoo tsis tsim nyog, muaj peev xwm raug xwm txheej, thiab nws tsis tuaj yeem xa thiab siv raws sijhawm, yog li nws yuav tsum tau rov ua dua thiab kho dua tshiab; lub sij hawm tsim kho yog ncua, thiab cov tswv yim ntawm kev ua haujlwm thiab cov khoom siv tau nce. Kev ntsuas: cov ntaub ntawv tseem ceeb, cov khoom siv thiab cov khoom siv hauv cov khoom siv dej thiab cov dej ntws thiab cov cua sov thiab kev huv huv engineering yuav tsum tau muab nrog cov ntaub ntawv soj ntsuam zoo lossis cov ntawv pov thawj cov khoom uas ua tau raws li cov qauv tam sim no los ntawm lub xeev lossis Ministry; cov khoom npe, qauv, specification, lub teb chaws zoo tus qauv code, tus me nyuam hnub, chaw tsim tshuaj paus lub npe thiab qhov chaw, xa khoom kuaj daim ntawv pov thawj los yog code yuav tsum tau qhia. Taboo 15 Valve inversion Qhov tshwm sim: qhov kos valve, throttle valve, siab txo valve, kos valve thiab lwm yam li qub yog kev taw qhia. Yog tias lawv tau teeb tsa rov qab, lub throttle valve yuav cuam tshuam rau kev pabcuam thiab lub neej; lub siab txo valve yuav tsis ua haujlwm tag nrho, thiab lub check valve yuav ua rau muaj kev phom sij. Kev ntsuas: rau qhov dav dav, muaj cov cim taw qhia ntawm lub cev valve; yog tias tsis yog, nws yuav tsum raug txheeb xyuas raws li txoj cai ua haujlwm ntawm lub valve. Lub valve kab noj hniav ntawm qhov nres valve tsis yog symmetrical. Cov kua dej yuav tsum tau tso cai kom dhau los ntawm qhov chaw nres nkoj valve los ntawm hauv qab mus rau sab saum toj, kom cov dej tsis kam yog me me (txiav txim siab los ntawm cov duab), qhov qhib yog kev txuag hluav taws xob (vim qhov siab ntawm qhov nruab nrab), thiab qhov nruab nrab. tsis muaj zog tom qab kaw, uas yooj yim rau kev txij nkawm. Qhov no yog vim li cas qhov nres valve tsis tuaj yeem thim rov qab. Tsis txhob nruab lub rooj vag valve upside down (xws li lub tes log yog downward), txwv tsis pub, qhov nruab nrab yuav nyob twj ywm nyob rau hauv lub valve npog qhov chaw rau lub sij hawm ntev, uas yooj yim rau corrode lub valve qia, thiab yog txwv tsis pub los ntawm ib co txheej txheem yuav tsum tau. Nyob rau tib lub sijhawm, nws tsis yooj yim los hloov cov ntim khoom. Qhib qia rooj vag valve yuav tsum tsis txhob ntsia hauv av, txwv tsis pub cov qia yuav raug corroded vim av noo. Thaum txhim kho lub tshuab nqa nqa, xyuas kom tseeb tias lub valve disc yog ntsug, kom lub nqa tau hloov tau. Lub viav vias kos valve yuav tsum tau nruab nrog nws tus pin ncej kab rov tav kom nws tuaj yeem ua viav vias yooj yim. Lub siab nyem valve yuav tsum tau muab ntsia rau ntawm txoj kab rov tav thiab yuav tsum tsis txhob inclined nyob rau hauv tag nrho cov lus qhia.