Kev xaiv cov khoom siv hluav taws xob hluav taws xob hluav taws xob feem ntau yog raws li lub hauv paus ntsiab lus uas xaiv cov roj av thiab tshuaj hluav taws xob hluav taws xob yuav tsum ua raws.

Kev xaiv cov khoom siv hluav taws xob hluav taws xob hluav taws xob feem ntau yog raws li lub hauv paus ntsiab lus uas xaiv cov roj av thiab tshuaj hluav taws xob hluav taws xob yuav tsum ua raws.

Lub tshuab hluav taws xob valve yog ib qho khoom siv tseem ceeb kom paub txog kev tswj xyuas valve, tswj tsis siv neeg thiab tswj chaw taws teeb. Nws txoj kev txav tuaj yeem tswj tau los ntawm kev mob stroke, torque lossis qhov loj ntawm axial thrust. Vim tias cov yam ntxwv ua haujlwm thiab kev siv tus nqi ntawm lub valve hluav taws xob yog nyob ntawm hom valve, kev ua haujlwm tshwj xeeb ntawm cov cuab yeej thiab txoj haujlwm ntawm lub valve hauv cov kav dej lossis cov khoom siv, yog li ntawd, kev xaiv kom raug ntawm lub valve hluav taws xob yog qhov tseem ceeb heev. tiv thaiv qhov tshwm sim ntawm overload (ua hauj lwm torque yog siab tshaj qhov tswj torque).
Feem ntau, kev xaiv kom raug ntawm lub tshuab hluav taws xob valve raws li hauv qab no:
Kev khiav hauj lwm torque Cov kev khiav hauj lwm torque yog lub ntsiab parameter rau xaiv lub valve hluav taws xob ntaus ntawv. Qhov tso zis torque ntawm cov cuab yeej hluav taws xob yuav tsum yog 1.2 ~ 1.5 npaug ntawm kev ua haujlwm loj ntawm lub valve.
Muaj ob lub ntsiab qauv ntawm kev khiav hauj lwm ntawm lub thrust valve hluav taws xob ntaus ntawv: ib tug tsis configured nrog thrust disc, ncaj qha tso zis torque; Lwm qhov yog configuration ntawm thrust disc, tso zis torque los ntawm thrust disc qia txiv ntoo rau hauv cov zis thrust.
Tus naj npawb ntawm kev tig ntawm cov zis ncej ntawm lub tshuab hluav taws xob valve yog cuam tshuam nrog lub nominal txoj kab uas hla ntawm lub valve qia suab thiab cov xov tooj ntawm cov xov. Nws yog xam raws li M = H / ZS (M yog tag nrho cov lem uas cov cuab yeej hluav taws xob yuav tsum tau ntsib, H yog qhov qhib qhov siab ntawm lub valve qia, S yog lub suab ntawm lub valve qia tsav xov thiab Z yog qhov siab ntawm lub valve. tus naj npawb ntawm valve qia xov).
Cov kab uas hla rau ntau qhov qhib-stem li qub, yog tias lub qia loj loj tso cai los ntawm cov khoom siv hluav taws xob tsis tuaj yeem hla lub qia valve, nws tsis tuaj yeem sib sau ua ke rau hauv lub tshuab hluav taws xob. Yog li ntawd, sab hauv txoj kab uas hla ntawm lub hollow tso zis ncej ntawm lub tshuab hluav taws xob yuav tsum muaj ntau tshaj li sab nraud txoj kab uas hla ntawm lub qia ntawm qhib qia valve. Rau qhov tsaus qws li qub nyob rau hauv ib nrab teb li qub thiab multi-rotary li qub, txawm hais tias nws tsis yog yuav tsum tau xav txog qhov kev tso cai ntawm lub valve qia txoj kab uas hla, lub valve qia txoj kab uas hla thiab qhov tseem ceeb txoj kev loj yuav tsum tau tag nrho txiav txim siab nyob rau hauv cov kev xaiv, thiaj li hais tias lub valve qia txoj kab uas hla thiab qhov tseem ceeb txoj kev loj yuav tsum tau tag nrho txiav txim siab nyob rau hauv kev xaiv, thiaj li hais tias lub valve qia txoj kab uas hla. kev sib dhos tuaj yeem ua haujlwm ib txwm.
Yog tias qhov qhib thiab kaw ceev ntawm qhov tso zis ceev valve nrawm dhau, nws yooj yim los tsim cov dej percussion tshwm sim. Yog li ntawd, qhov tsim nyog qhib thiab kaw ceev yuav tsum raug xaiv raws li qhov sib txawv ntawm kev siv.
Lub tshuab hluav taws xob valve muaj nws cov kev cai tshwj xeeb, uas yog, yuav tsum muaj peev xwm txwv lub zog torque lossis axial quab yuam. Feem ntau lub tshuab hluav taws xob valve siv lub torque limiting ncej. Thaum qhov tshwj xeeb ntawm cov cuab yeej hluav taws xob tau txiav txim siab, nws qhov kev tswj torque tau txiav txim siab. Feem ntau nyob rau hauv lub sij hawm txiav txim ua ntej ntawm kev ua haujlwm, lub cev muaj zog yuav tsis dhau. Tab sis yog tias cov xwm txheej hauv qab no tuaj yeem ua rau overload: thawj zaug, lub zog hluav taws xob tsawg, tsis tuaj yeem tau txais qhov xav tau torque, kom lub cev muaj zog nres; Qhov thib ob, nws yog qhov tsis ncaj ncees lawm los kho lub torque limiting mechanism, yog li ntawd nws yog ntau dua li qhov nres torque, ua rau lub zog tas mus li, kom lub cev muaj zog nres; Thib peb, kev siv tsis sib xws, kev txuag hluav taws xob, ntau tshaj qhov tso cai rau qhov kub thiab txias ntawm lub cev muaj zog; Plaub, lub voj voog tsis ua haujlwm ntawm lub torque limiting mechanism tshwm sim rau qee qhov laj thawj, kom lub zog torque loj dhau; Thib tsib, qhov kub thiab txias ambient siab dhau lawm, kom lub peev xwm kub ntawm lub cev muaj zog txo qis.
Yav dhau los, txoj kev los tiv thaiv lub cev muaj zog yog siv fuses, overcurrent relays, thermal relays, thermostats, thiab lwm yam, tab sis cov qauv no muaj qhov zoo thiab qhov tsis zoo. Rau cov khoom siv hluav taws xob xws li cov khoom siv thauj khoom sib txawv, kev tiv thaiv kev ruaj ntseg tsis muaj. Yog li ntawd, ntau yam kev sib txuas yuav tsum tau muab coj los ua, suav nrog ob hom: ib qho yog los txiav txim qhov nce lossis txo ntawm lub cev muaj zog nkag tam sim no; Qhov thib ob yog los txiav txim qhov xwm txheej cua sov ntawm lub cev muaj zog nws tus kheej. Txawm li cas los xij, lub peev xwm cua sov ntawm lub cev yuav tsum tau txiav txim siab rau lub sijhawm pub dawb.
Feem ntau, txoj kev tiv thaiv yooj yim ntawm overload yog: rau kev tiv thaiv overload ntawm kev ua haujlwm tsis tu ncua lossis taw tes ua haujlwm ntawm lub cev muaj zog, qhov ntsuas kub yog siv; Rau kev tiv thaiv lub cev muaj zog thaiv, thermal relay yog siv; Rau kev sib tsoo luv luv, fuse lossis overcurrent relay yog siv.
Petroleum, tshuaj lom neeg hluav taws xob valve xaiv yuav tsum ua raws li txoj cai
Petroleum, tshuaj lom neeg hluav taws xob valve xaiv yuav tsum ua raws li txoj cai
Nyob rau hauv lub ntsej muag ntawm ntau yam hluav taws xob valve kev faib tawm thiab xws li ib tug complex ntau yam ntawm tej yam kev mob, xaiv lub pipeline system installation ntawm lub feem ntau haum fais valve khoom, peb yuav tsum xub to taub cov yam ntxwv ntawm lub fais valve; Qhov thib ob yuav tsum paub qhov kev xaiv ntawm cov kauj ruam hluav taws xob thiab lub hauv paus; Ntxiv mus, yuav tsum ua raws li kev xaiv ntawm roj av, tshuaj lom neeg kev lag luam nrog hluav taws xob valve txoj cai.
Kev xaiv cov roj av, tshuaj lom neeg kev lag luam hluav taws xob valve txoj cai: cov dej ntws ncaj qha los ntawm hluav taws xob valve, nws cov ndlwg tsis kam yog me me, feem ntau xaiv raws li kev txiav tawm thiab qhib nruab nrab nrog hluav taws xob valve; Ib qho yooj yim los kho qhov ntws ntawm cov hluav taws xob li qub raws li kev tswj hwm ntws; Plug li qub thiab pob li qub yog tsim nyog rau reversing shunt; Qhov zawv zawg ntawm qhov kaw ntawm qhov chaw sib khi nrog cov nyhuv so ntawm lub qhov hluav taws xob yog qhov tsim nyog tshaj plaws rau nruab nrab nrog cov khoom raug tshem tawm.
A, txiav tawm thiab qhib nruab nrab rau hluav taws xob li qub
Cov dej ntws tau ncaj qha los ntawm lub valve hluav taws xob, qhov ntws tsis kam yog me dua, feem ntau yog xaiv raws li qhov kev txiav tawm thiab qhib nruab nrab nrog cov hluav taws xob valve. Downward kaw hluav taws xob valve (globe valve, plunger valve) vim nws txoj kev ntws ntws tawm, ntws tsis kam yog siab dua li lwm cov hluav taws xob li qub, yog li kev xaiv tsawg dua. Nyob rau hauv rooj plaub uas tso cai rau cov dej ntws ntau dua, lub kaw hluav taws xob kaw tuaj yeem siv tau.
Ob, tswj qhov ntws ntawm hluav taws xob li qub
Feem ntau xaiv tau yooj yim los kho cov hluav taws xob valve raws li kev tswj cov dej ntws. Downward kaw hluav taws xob li qub, xws li lub ntiaj teb li qub, tsim nyog rau lub hom phiaj no vim tias lawv lub rooj zaum loj yog proportional rau stroke ntawm lub kaw lub caij. Teb hluav taws xob li qub (plug, npauj npaim, pob li qub) thiab flex-lub cev hluav taws xob li qub (pinch, diaphragm) kuj tseem siv tau rau kev tswj lub zog, tab sis feem ntau tsuas yog nyob rau hauv qhov txwv ntawm cov hluav taws xob valve calibers. Lub rooj vag valve yog lub rooj vag zoo li disc rau lub voj voog lub rooj zaum lub qhov ncauj los ua crosscutting tsab ntawv tsa suab, nws tsuas yog nyob ze rau qhov chaw kaw, tuaj yeem tswj tau qhov ntws zoo dua, yog li nws feem ntau tsis siv rau kev tswj ntws.
Peb, thim rov qab shunt hluav taws xob valve
Qhov hluav taws xob valve no yuav muaj peb lossis ntau dua raws li qhov xav tau rau kev thim rov qab shunt. Plug thiab pob li qub yog tsim nyog rau lub hom phiaj no, yog li feem ntau cov hluav taws xob li qub siv rau kev thim rov qab siv ib qho ntawm cov hluav taws xob li qub. Tab sis qee zaum, lwm hom hluav taws xob li qub, tsuav yog ob lossis ntau lub qhov hluav taws xob sib txuas tau zoo, kuj tuaj yeem siv rau thim rov qab shunt.
Plaub, hluav taws xob valve nrog tshem tawm qhov nruab nrab
Thaum muaj cov khoom raug tshem tawm hauv qhov nruab nrab, nws yog qhov tsim nyog rau lub tshuab hluav taws xob nrog cov zawv zawg wiped muaj nuj nqi ntawm qhov kaw qhov chaw raws li qhov chaw sealing. Yog hais tias lub nraub qaum thiab sab nraub qaum ntawm lub kaw rau lub rooj zaum yog ntsug, ces nws yuav clamps, yog li qhov hluav taws xob valve tshwj tsis yog cov khoom sib khi tuaj yeem tso cai rau cov khoom sib txuas, txwv tsis pub tsuas yog tsim nyog rau kev tshaj tawm huv si. Pob valve, ntsaws valve, npauj npaim valve nyob rau hauv tus txheej txheem ntawm kev qhib thiab kaw muaj ib tug so nyhuv ntawm sealing nto, yog li nws yog haum rau siv nyob rau hauv nruab nrab nrog tshem tawm hais.
Tam sim no, txawm nyob rau hauv roj av, tshuaj, los yog nyob rau hauv lwm yam kev lag luam ntawm lub raj xa dej, hluav taws xob valve daim ntawv thov, kev khiav hauj lwm zaus thiab kev pab cuam yog puas-hloov, tswj los yog tshem tawm txawm tias tsis tshua muaj to, tseem ceeb, cov khoom tseem ceeb los yog cia siab rau cov hluav taws xob li qub. Qhov kawg tswj ntawm lub raj xa dej yog hluav taws xob valve, hluav taws xob valve nyob rau hauv ntau yam kev lag luam kev pab cuam thiab txhim khu kev qha kev ua tau zoo yog.