Isicwangciso sokukhetha ivalve! Ingqokelela! Uhlobo lwevalvu kunye nereferensi yokukhetha uhlobo lokuqhuba
Kwiinkqubo zemibhobho yamanzi, iivalve zizinto zokulawula indima yazo ephambili kukwahlula izixhobo kunye neenkqubo zemibhobho, ukulawula ukuhamba, ukuthintela ukubuya umva, ukulawula nokukhupha uxinzelelo. Ingasetyenziselwa ukulawula ukuhamba komoya, amanzi, umphunga, zonke iintlobo zemithombo yeendaba ezonakalisayo, udaka, i-oyile, isinyithi esilulwelo kunye nemithombo yeendaba ene-radioactive. Ngenxa yokuba inkqubo yokubhobhoza ukukhetha eyona valve ifanelekileyo ibaluleke kakhulu, ngoko ke, ukuqonda iimpawu zevalve kunye nokukhethwa kwamanyathelo evalve kunye nesiseko kubaluleke kakhulu.
Kwiinkqubo zemibhobho yamanzi, iivalve zizinto zokulawula indima yazo ephambili kukwahlula izixhobo kunye neenkqubo zemibhobho, ukulawula ukuhamba, ukuthintela ukubuya umva, ukulawula nokukhupha uxinzelelo. Ingasetyenziselwa ukulawula ukuhamba komoya, amanzi, umphunga, zonke iintlobo zemithombo yeendaba ezonakalisayo, udaka, i-oyile, isinyithi esilulwelo kunye nemithombo yeendaba ene-radioactive. Ngenxa yokuba inkqubo yokubhobhoza ukukhetha eyona valve ifanelekileyo ibaluleke kakhulu, ngoko ke, ukuqonda iimpawu zevalve kunye nokukhethwa kwamanyathelo evalve kunye nesiseko kubaluleke kakhulu.
Ukuhlelwa kweiivalve
Okokuqala, i-valve inokwahlulwa ibe ngamacandelo amabini:
Ivalve ezenzekelayo yeklasi: ixhomekeke kumbindi (ulwelo, igesi) isakhono sayo sokusebenzisa ivalve.
Njenge-valve yokukhangela, ivalve yokhuseleko, ivalve yokulawula, umgibe, ivalve yokunciphisa uxinzelelo, njl.
Uhlobo lwesibini lwe-valve yokuqhuba: ngoncedo lwe-manual, umbane, i-hydraulic, i-pneumatic yokulawula isenzo se-valve.
Okufana nevalve yesango, ivalve yeglowubhu, ivalve ye-throttle, ivalve yebhabhathane, ivalve yebhola, ivalve yeplagi njalo njalo.
Emibini, ngokweempawu zolwakhiwo, ngokwesalathiso senxalenye yokuvala enxulumene nentshukumo yesitulo sevalve inokwahlulwa:
1. Ukuma kocango lokumisa: indawo yokuvala ihamba embindini wesihlalo;
2. Ubume besango: iqhekeza lokuvala lihamba kumbindi othe nkqo wesihlalo;
3. Iqhude kunye nebhola: iqhekeza lokuvala yi-plunger okanye ibhola, ejikelezayo kumgca wayo ophakathi;
4. Ubume be-Swing: inxalenye yokuvala ijikeleza i-shaft ngaphandle kwesihlalo;
5. I-Disc: i-disc yecandelo lokuvala lijikeleza kwi-shaft esihlalweni;
6. Imilo yevalve yesilayidi: isiqwenga sokuvala sityibilika kwicala le-perpendicular kumjelo.
Ezintathu, ngokokusetyenziswa, ngokweendlela ezahlukeneyo zevalve zinokwahlulwa:
1. Ukuqhawula: kusetyenziselwa ukuqhagamshela okanye ukusika imidiya yepayipi, njengevalve yeglowubhu, ivalve yesango, ivalve yebhola, ivalve yebhabhathane, njl.
2. Khangela: isetyenziselwa ukuthintela umva kweendaba, njengevalve yokukhangela.
Ukulungiswa kwe-3 kunye: isetyenziselwa ukulungelelanisa uxinzelelo kunye nokuhamba kwe-medium, njenge-valve yokulawula, i-valve yokunciphisa uxinzelelo.
4. Ukusabalalisa: kusetyenziselwa ukutshintsha indlela yokuhamba kwendlela, ukusabalalisa, njenge-cock yeendlela ezintathu, i-valve yokusabalalisa, i-valve yesilayidi, njl.
5. Ivalve yokhuseleko: xa uxinzelelo oluphakathi ludlula ixabiso elichaziweyo, lisetyenziselwa ukukhupha i-medium engaphezulu ukuze kuqinisekiswe ukhuseleko lwenkqubo yombhobho kunye nezixhobo, ezifana ne-valve yokukhusela kunye ne-valve yengozi.
6. Olunye usetyenziso olukhethekileyo: njengomgibe, ivalve yokukhupha umoya, ivalve yokukhupha amanzi, njl.
Ezine, ngokwendlela yokuqhuba, ngokwendlela eyahlukileyo yokuqhuba inokwahlulwa:
1. I-Manual: ngoncedo lwevili lesandla, i-handle, i-lever okanye i-sprocket, kukho i-drive yomntu, i-torque yokuhambisa ifakwe i-worm gear, i-gear kunye nezinye izixhobo zokunciphisa.
2. Umbane: uqhutywa yimoto okanye ezinye izixhobo zombane.
3. Hydraulic: iqhutywa (amanzi, ioli).
4. I-pneumatic: iqhutywa ngumoya oxinanisiweyo.
Ezintlanu, ngokoxinzelelo, ngokoxinzelelo oluqhelekileyo lwevalve lunokwahlulwa:
1. Vacuum valve: *** uxinzelelo 0.1Mpa, oko kukuthi 760mm mercury high valve, idla ngokuba mm mercury okanye mm ikholamu yamanzi ukumela uxinzelelo.
2. Ivalve yoxinzelelo oluphantsi: ivalve yentsimbi ye-PN≤1.6Mpa (kubandakanya i-PN≤1.6MPa yentsimbi)
3. Ivalve yoxinzelelo oluphakathi: uxinzelelo lwegama PN2.5-6.4mpa valve.
I-valve ye-4 yoxinzelelo oluphezulu: i-valve yoxinzelelo lwe-PN10.0-80.0MPa.
5. Ivalve yoxinzelelo oluphezulu: uxinzelelo lwegama PN≥100.0MPa valve.
Ezintandathu, ngokweqondo lobushushu eliphakathi, ngokwevalve esebenzayo ubushushu obuphakathi bunokwahlulwa:
1. Ivalve eqhelekileyo: ilungele ubushushu obuphakathi -40℃ ~ 425℃ ivalve.
2. Ivalve yobushushu obuphezulu: ilungele ubushushu obuphakathi kwe-425℃ ~ 600℃ ivalve.
3. Ivalve ekwazi ukumelana nobushushu: ilungele ubushushu obuphakathi kwe-600℃ okanye ngaphezulu kwevalve.
4. Ivalve yobushushu obuphantsi: ilungele ubushushu obuphakathi -150℃ ~ -40℃ ivalve.
5.** ivelufa yobushushu: ilungele iqondo lobushushu eliphakathi ngaphantsi -150℃ ivelufa.
Isixhenxe, ngokwe-diameter ye-nominal, ngokwe-diameter ye-valve inokwahlulwa:
1. Ivalve yedayamitha encinci: ivalve yedayamitha ye-DN40mm.
2. Ivalve yedayamitha ephakathi: ivalve yedayamitha ye-DN50 ~ 300mm.
3. Ivalve yedayamitha enkulu: i-diameter ye-DN350 ~ 1200mm ivalve.
4. Ivalve yedayamitha eyongezelelekileyo: ivalve yedayamitha engu-DN≥1400mm.
Esibhozo, ngokwendlela yoqhagamshelo kunye nombhobho, ngokwevalve kunye nemodi yoqhagamshelo lombhobho inokwahlulwa:
1. I-valve ene-Flanged: umzimba we-valve uxhotywe nge-flange, kwaye umbhobho udibene ne-valve ye-flange.
2. Ivalve enemisonto: umzimba wevalve onentambo yangaphakathi okanye yangaphandle, kunye nombhobho onevalve yokudibanisa intambo.
3. Weld ivalve: umzimba wevalve uxhotyiswe ngomlomo we-welding, kwaye ivalve idityaniswe kumbhobho.
Uqhagamshelo lwevalve yesi-4: umzimba wevalve onesithinteli, kunye nombhobho udityaniswe nevalve yokubamba.
5. I-valve yokudibanisa i-sleeve: i-valve idibene nombhobho ngomkhono.
Iimpawu zeevalvu
Iimpawu zeValve ngokubanzi zimbini iindidi, iimpawu zenkonzo kunye neempawu zesakhiwo.
Ukusetyenziswa kweempawu: imisela usetyenziso oluphambili lwendlela yokusebenza kwevalve kunye noluhlu losetyenziso, luyinxalenye yeempawu zokusetyenziswa kwevalve zezi: udidi lwevalvu (ivalve yesekethe evaliweyo, ivalve elawulayo, ivalve yokhuseleko, njl.); Uhlobo lwemveliso (ivalve yesango, ivalve yeglowubhu, ivalve yebhabhathane, ivalve yebhola, njl.); Iindawo eziphambili zevalve (umzimba wevalve, isigqubuthelo, isiqu, idiski, umphezulu wokutywina) izinto; Imowudi yokuhambisa iValve, njl.
Iimpawu zesakhiwo: imisela ukufakwa kwevalve, ukulungiswa, ukugcinwa kunye nezinye iindlela zezinye iimpawu zesakhiwo, ezizezempawu zesakhiwo ezi: ubude besakhiwo sevalve kunye nokuphakama ngokubanzi, kunye nefom yokudibanisa umbhobho (uqhagamshelwano lwe-flange, intambo uxhulumaniso, uxhulumaniso lwehupu, uxhulumaniso lwentambo yangaphandle, uxhumano lwe-welding end, njl.); Indlela yokutywina (faka i-ring, i-thread ring, i-surfacing, i-welding yokutshiza, umzimba womzimba); Ifom yesakhiwo se-valve stem (intonga ejikelezayo, intonga yokuphakamisa), njl.
Iinkqubo zokukhetha i-valve kunye nesiseko
Amanyathelo okukhetha:
I-1, i-valve ecacileyo kwisixhobo okanye ukusetyenziswa kwesixhobo, misela iimeko zokusebenza ze-valve: i-medium esebenzayo, uxinzelelo lokusebenza, ukushisa okusebenzayo kunye nokunye.
2, misela i-diameter ye-nominal kunye nendlela yokudibanisa yombhobho odibanisa ne-valve: i-flange, intambo, i-welding, njl.
I-3, misela indlela yokusebenzisa i-valve: i-manual, umbane, i-electromagnetic, i-pneumatic okanye i-hydraulic, ikhonkco yombane okanye i-electro-hydraulic linkage.
4, ngokwemibhobho yothumelo lwemibhobho, uxinzelelo olusebenzayo, ubushushu obusebenzayo ukumisela iqokobhe levalve ekhethiweyo kunye namalungu angaphakathi esixhobo: intsimbi engwevu, intsimbi ethambileyo, intsimbi yekhabhoni, intsimbi yealloyi, intsimbi enganyangekiyo eneasidi, ingxubevange yobhedu, njl.
I-5, khetha uhlobo lwe-valve: i-valve yesiphaluka evaliweyo, i-valve yokulawula, i-valve yokhuseleko, njl.
I-6, misela uhlobo lwevalve: ivalve yesango, ivalve yeglowubhu, ivalve yebhola, ivalve yebhabhathane, ivalve ye-throttle, ivalve yokhuseleko, ivalve yokunciphisa uxinzelelo, umgibe womphunga, njl.
7, misela iiparamitha zevalve: kwiivalvu ezizenzekelayo, ngokweemfuno ezahlukeneyo ukugqiba ukuchasana okuvumelekileyo, ukukhupha umthamo, uxinzelelo lwangasemva, njl. .
I-8, misela imilinganiselo yejometri ekhethiweyo yevalve: ubude besakhiwo, ifom yokudibanisa i-flange kunye nobukhulu, vula kwaye uvale ulwalathiso lokuphakama kwevalve yobukhulu, ukudibanisa ubungakanani bomngxuma webholithi kunye nenani, ubungakanani bemilo yevalve yonke.
I-9, ukusetyenziswa kolwazi olukhoyo: ikhathalogu yemveliso yevalvu, iisampuli zemveliso yevalve kunye nezinye iimveliso ezifanelekileyo zevalve.
Ukukhethwa kwesiseko sevalvu:
Ekuqondweni kokukhethwa kwamanyathelo evalvu, kodwa kwakhona kufuneka aqonde ngakumbi isiseko sokukhethwa kweevalvu.
I-1, ukusetyenziswa kwevalve ekhethiweyo, iimeko zokusebenza kunye nemodi yokulawula.
I-2, ubume bendawo yokusebenza: uxinzelelo olusebenzayo, ubushushu bokusebenza, ukusebenza kwe-corrosion, nokuba iqulethe amasuntswana aqinileyo, ingaba i-medium inetyhefu, ingaba inokutsha, i-explosive medium, i-viscosity ephakathi kunye nokunye.
I-3, iimpawu ze-valve fluid iimfuno: ukuchasana nokuhamba, ukukhupha umthamo, iimpawu zokuhamba, ibakala lokutywinwa njalo njalo.
I-4, ubungakanani bofakelo kunye neemfuno zobukhulu bangaphandle: i-diameter yegama, ukudibanisa kunye nombhobho kunye nobukhulu bokudibanisa, ubungakanani bangaphandle okanye umda wobunzima.
5. Iimfuno ezongezelelweyo zokuthembeka, ubomi benkonzo kunye nokusebenza kobungqina bokuqhuma kweemveliso zevalve.
Xa ukhetha iiparamitha, qaphela ukuba:
Ukuba i-valve IZA KUSETYENZISWA KWIINJONGO zokulawula, le miqathango eyongezelelweyo ilandelayo kufuneka igqitywe: indlela yokusebenza, ubuninzi kunye neemfuneko ezincinci zokuhamba, ukuhla koxinzelelo lokuhamba okuqhelekileyo, ukuhla koxinzelelo ekuvaleni, ubuninzi kunye noxinzelelo oluncinci lokungena kwi-valve.
Ngokutsho kolu khetho lungentla lwesiseko sevalve kunye namanyathelo, ukhetho olufanelekileyo noluchanekileyo lwevalve kufuneka lube nolwazi olunzulu lwesakhiwo sangaphakathi seentlobo ezahlukeneyo zeevalvu, ukuze ukwazi ukukhetha ngokufanelekileyo ivalve ukwenza ukhetho oluchanekileyo.
Ulawulo lokugqibela lombhobho yivalve. I-valve yokuvula kunye neendawo zokuvala zilawula ukuhamba kweendaba kumbhobho, imilo ye-valve flow channel yenza ukuba i-valve ibe neempawu ezithile zokuhamba, ezimele zithathelwe ingqalelo xa ukhetha i-valve efanelekileyo ukufakwa kwinkqubo yepayipi.
Khetha ivalve kufuneka ilandele umgaqo
I-1, i-cut-off kunye ne-medium evulekileyo kunye nevalve
Ijelo lokuhamba liyi-valve echanekileyo, ukuchasana kokuhamba kuncinci, ngokuqhelekileyo kukhethwe njenge-cut-off and open medium with valve. Ivalve evalekileyo eya ezantsi (ivalve yeglowubhu, ivalve yeplunger) ngenxa yendlela yayo yokuqukuqela, ukuchasana nokuqukuqela kuphezulu kunezinye iivalve, ngoko ke kukhethwe kancinci. Iivalvu ezivaliweyo zingasetyenziswa apho ukuchasana kokuhamba okuphezulu kuvunyelwe.
2, lawula ukuhamba kweevalvu
Ivalve ekulula ukuyilungisa idla ngokukhethwa ukulawula ukuhamba. Iivalvu ZOKUVALA eziya ezantsi (ezifana neevalvu zeglowubhu) ZIYIFANELE LE NJONGO KUBA Ubungakanani besitulo BULINGANISELELE NE-STROKE OF SHUTOFF. IIVAVAVA ezijikelezayo (i-PLUG, ibhabhathane, iivalve zeBHOLA) kunye ne-FLEXURE BODY VALVES (I-PINCH, i-DIAPHRAGM) ZIKHONA UKULAWULWA OKUTHUKUTHELA, kodwa NGOKUQHELEKILEYO KUPHELA kuluhlu olulinganiselweyo lwe-valve DIAMETERS. I-VALVE yesango YIsango elimilise idiskhi kwizibuko lesihlalo esisetyhula ukwenza intshukumo enqamlezileyo, ikufutshane kuphela kwindawo evaliweyo, inokulawula ngcono ukuhamba, ngoko ayiqhelekanga ukusetyenziswa kulawulo lokuhamba.
3. Ivalve yokubuyisela umva kunye nokuphambukisa
Ivalve inokuba nemijelo emithathu okanye ngaphezulu, kuxhomekeke kwimfuno yokubuyisela umva kunye nokujika. Iivalve zeplagi kunye nebhola zifaneleke ngakumbi kule njongo, kwaye ngoko ke, iivalve ezininzi ezisetyenziselwa ukubuyisela umva kunye nokuguqula zikhethwa njengenye yezi valve. Nangona kunjalo, KWEZINYE IZIXHOBO, ezinye IINTLOBO ZEVAVAVA ZINOKUSETYENZISWA NJENGEZIPHUMULI ZOTHUTHO, NGOKUBA AMAVAVAVU AMABINI okanye ANGAPHEZULU aqhagamshelwe ngokufanelekileyo enye kwenye.
4. Iivalvu eziphakathi ezinamasuntswana amisiweyo
Xa i-medium ngamasuntswana amisiweyo, ** ilungele ukusetyenziswa kwamacandelo okuvala ecaleni kwendawo yokutywina yevalve etyibilikayo enentshukumo yokusula. Ukuba UKUVALWA KUNQUMILE EMVA NAPHAMBI KWESIHLALO, AMANQAKU ANOKUBANJISWA, NGOKO LE VALIVI IFANELE KUPHELA I-MEDIA ECOCEKILEYO NGOKUPHANDLE NGAPHANDLE KOKUBA UMSEBENZI WOKUtywina UVUMELEKILE UKUBA AMANQAKU ANGABHINWE. Iivalve zebhola kunye neeplagi zeplagi zisula indawo yokutywina ngexesha lokuvula nokuvala, ngoko ke zifanelekile ukusetyenziswa kwimidiya kunye neengqungquthela ezimisiwe.
Ixesha lokuposa: Oct-14-2022
