Nyob rau hauv tsab xov xwm dhau los, peb tau tham txog lub rooj vag thiab lub ntiaj teb li qub, hnub no peb tsiv mus rau npauj npaim li qub thiab kos li qub, uas feem ntau siv hauv kev kho dej.
1. Npauj Npaim Valve.
Npauj npaim valveyog lub pob valve uas siv lub disc (tseem hu ua npauj npaim phaj) qhib thiab kaw cov tswv cuab kom tig 90 ° lossis txog 90 ° qhib thiab kaw cov channel.Lub zog ntawm npauj npaim valve disc yog so, yog li feem ntau npauj npaim li qub tuaj yeem siv rau kev tshaj tawm nrog cov khoom raug tshem tawm.
Feem ntau siv npauj npaim li qub muaj xws li wafe thiab flanged npauj npaim li qub.Wafer hom npauj npaim valve yog siv los txuas lub valve ntawm ob lub yeeb nkab flanges nrog stud bolts, thiab flange hom npauj npaim valve yog nrog flange ntawm lub valve, thiab flanges ntawm ob kawg ntawm lub valve txuas nrog cov yeeb nkab flange nrog bolts.
Nta:
1.Me me, luv luv, qauv yooj yim thiab lub teeb yuag.
2. Yooj yim rau kev khiav lag luam, qhib thiab kaw ceev, tsuas yog yuav tsum tig lub disc 90 ° kom qhib thiab kaw.
3. Zoo sealing thiab kev ua tau zoo.Vim tias cov roj hmab siv los ua lub nplhaib sealing, lub compression thiab resilience yog qhov zoo (uas yog, nws yuav tsis tawv), yog li cov sealing kev ua tau zoo..Lub valve nrov plig plawg tuaj yeem qhib nruab nrab ntawm 15 ° thiab 70 °, thiab tuaj yeem ua rau muaj kev cuam tshuam txaus ntshai.
4. Me me kev khiav hauj lwm torque thiab kua kuj.Raws li kev ntsuas, qhov dej tsis kam ntawm npauj npaim li qub yog tsawg dua li ntawm lwm hom li qub tshwj tsis yog pob li qub.
5. Vim muaj kev txwv ntawm cov khoom sib khi, kev khiav hauj lwm siab thiab kev khiav hauj lwm kub ntawm lub npauj npaim valve yog me me.
2.Kuaj Valve
Kev siv thiab cov yam ntxwv:
Kuaj valveyog lub valve siv los tiv thaiv qhov rov qab ntawm cov xov xwm hauv cov raj xa dej, nws qhib thaum qhov nruab nrab ntws mus rau hauv qab thiab kaw cia li thaum lub nruab nrab ntws rov qab.Feem ntau siv rau hauv cov kav dej tsis tso cai rau qhov nruab nrab ntws mus rau qhov sib txawv, txhawm rau tiv thaiv qhov rov qab ntawm qhov nruab nrab puas tsuaj rau cov khoom siv thiab qhov chaw.Thaum lub twj tso kua mis nres khiav, tsis txhob ua rau lub twj tso kua mis tig rov qab.Nyob rau hauv cov kav dej, feem ntau kos li qub thiab kaw-circuit li qub siv nyob rau hauv series.Qhov no yog vim qhov tsis zoo ntawm kev sib khi ntawm cov tshev valve, thaum cov xov xwm siab me me, yuav muaj ib feem me me ntawm cov xov xwm tawm, qhov xav tau rau cov kav hlau txais xov kaw kom ntseeg tau tias kaw cov kav dej.Hauv qab valve kuj yog ib qho kos valve, nws yuav tsum tau muab tso rau hauv dej, tshwj xeeb tshaj yog ntsia hauv lub twj tso kua mis tsis tuaj yeem ua tus kheej priming lossis tsis muaj lub tshuab nqus dej nqus cov yeeb nkab rau pem hauv ntej.
Kev kho dej valve feem ntau ua tsis tiav thiab ntsuas
Valve nyob rau hauv cov kav dej ua haujlwm rau qee lub sijhawm, yuav muaj ntau yam tsis ua haujlwm.Ua ntej, tus naj npawb ntawm cov khoom muaj feem cuam tshuam nrog kev sib xyaw ntawm lub valve, ntau qhov chaw yog qhov ua tsis tiav.Thib ob, nrog lub valve tsim, tsim khoom, kev teeb tsa, kev ua haujlwm, kev saib xyuas zoo thiab qhov tsis zoo.General non-power-driven valve common failures muab faib ua plaub pawg.
1. kis tsis tau
Kev xa khoom tsis ua haujlwm feem ntau tshwm sim raws li lub valve qia jamming, inflexible lag luam lossis lub valve tsis tuaj yeem ua haujlwm.Yog vim li cas: lub valve raug kaw rau lub sijhawm ntev tom qab xeb;kev txhim kho thiab kev ua haujlwm ntawm kev puas tsuaj rau lub qia threads lossis qia txiv ntoo;rooj vag yog jammed nyob rau hauv lub valve lub cev los ntawm txawv teb chaws khoom;Lub rooj vag feem ntau yog ib nrab qhib thiab ib nrab kaw lub xeev, los ntawm cov dej los yog lwm yam kev cuam tshuam ua rau qia screws thiab qia txiv ntseej hlau misalignment, loosening, tom tshwm sim;packing siab yog nruj heev, tuav lub qia;qia yog topped los yog los ntawm kev kaw ntawm qhov chaw jammed.Kev kho yuav tsum yog lubricated tsav qhov chaw.Nrog kev pab los ntawm ib tug wrench, thiab maj mam tapping, koj muaj peev xwm tshem tawm qhov tshwm sim ntawm jamming, topping;nres cov dej kho lossis hloov lub valve.
2.Kev puas tsuaj valve lub cev rupture
Valve lub cev puas rupture yog vim li cas: valve khoom corrosion kuj poob;yeeb nkab foundation kev daws teeb meem;yeeb nkab network siab los yog kub sib txawv hloov;dej rauj;kaw lub valve ua haujlwm tsis raug thiab lwm yam.Yuav tsum tam sim tshem tawm cov laj thawj sab nraud thiab hloov tib hom valve qhov chaw lossis li qub.
3. Valve to
valve to yog manifested li: valve qia core to;caj pas;flange gasket leakage.Feem ntau yog: valve qia (valve ncej) hnav, corrosion spalling, sealing nto pits, tev phenomenon;foob aging, to;flange bolts, flange bolts xoob.Kev tu kom nce, hloov qhov nruab nrab sealing;hloov cov txiv ntseej tshiab los kho qhov chaw ntawm lub bolt fastening.
Tsis muaj teeb meem zoo li cas yog tias kev kho ib txwm muaj, kev saib xyuas tsis tu ncua, tuaj yeem ua rau cov dej khib nyiab, lossis phem dua, ua rau tag nrho lub cev tuag tes tuag taw.Yog li ntawd, cov neeg ua haujlwm tu lub valve yuav tsum nyob rau ntawm qhov ua rau lub valve tsis ua haujlwm zoo, kev txawj ntse thiab kev tswj xyuas kom raug thiab kev ua haujlwm ntawm lub valve, kev kho raws sijhawm thiab kev txiav txim siab ntawm ntau yam tsis ua haujlwm xwm txheej ceev, los tiv thaiv kev ua haujlwm ntawm cov dej kho network.
4. lub valve qhib thiab kaw tsis zoo
Valve qhib thiab kaw kev ua haujlwm tsis zoo rau lub valve tsis qhib lossis kaw, lub valve tsis tuaj yeem ua haujlwm ib txwm.Yog vim li cas: valve qia corrosion;rooj vag jammed los yog lub rooj vag raug kaw rau lub sij hawm ntev nyob rau hauv lub xeev ntawm xeb;rooj vag tawm;cov khoom txawv teb chaws daig nyob rau hauv lub sealing nto los yog sealing zawj;kis tau tus mob qhov chaw hnav, jamming.Ntsib cov xwm txheej saum toj no txij nkawm, lubrication kis tau tus mob;rov qhib thiab kaw lub valve thiab hydrodynamic cuam tshuam ntawm cov khoom txawv teb chaws;hloov lub valve.