Kwicandelo lokulawula ulwelo lwamashishini,iivalve butterflydlala indima ebalulekileyo ekulawuleni, ekwalathiseni, nasekubekeni bucala ukuhamba kolwelo, iirhasi, kunye nodaka kwimibhobho. Ivalve yebhabhathane eneflanged lolunye uhlobo lonxibelelwano, oluneeflange ezidityanisiweyo kuzo zozibini iziphelo zomzimba wevalvu, evumela uqhagamshelo olukhuselekileyo kwiiflange zemibhobho.
Indlela yokujikeleza ngekota aivalve yebhabhathane eneflangediyayahlula kwiivalvu ezinqamlezileyo ezifana nesango okanye iivalvu zeglowubhu, ezibonelela ngeenzuzo kwisantya kunye nokusebenza kakuhle kwendawo.
Eli nqaku liza kungena kwiinkcukacha ze-valve ze-butterfly ezine-flanged, ezigquma ukuyila kwazo, iindidi, izixhobo, izicelo, iingenelo kunye nokungalunganga, ukufakela, ukugcinwa, ukuthelekisa kunye nezinye iivalve, kunye neendlela ezizayo.
1. Inkcazo kunye noMgaqo wokuSebenza
Ivalve yebhabhathane ene-flanged yivalve ejikelezayo ye-90-degree ebonakala ngediski elawula ukuhamba kolwelo ngokujikeleza kwesiqu. Umzimba wevalvu ubonisa iiflange kuzo zozibini iziphelo zoqhagamshelo oluthe ngqo kwibhoti kumbhobho. Iivalve zebhabhathane zeFlange zibonisa iiflange eziphakanyisiweyo okanye ezithe tyaba ezinemingxuma yebholiti, zibonelela ngoqhagamshelo oluqinileyo noluzinzileyo olufanelekileyo kusetyenziso oluphantsi, oluphakathi, kunye noxinzelelo oluphezulu, kunye needayamitha ezincinci, eziphakathi kunye nezinkulu.
Umgaqo wokusebenza ulula kwaye usebenza. Ivalve inomzimba wevalvu, idiski yevalvu, isiqu sevalvu, isitulo sevalvu, kunye ne-actuator. Xa i-handle okanye i-gear iqhutywe, okanye i-valve stem ijikelezwa yi-activator ngokuzenzekelayo, i-disc ye-valve ijikeleza ukusuka kwindawo ehambelana nomzila wokuhamba (ivule ngokupheleleyo) kwindawo ye-perpendicular (ivaliwe ngokupheleleyo). Kwindawo evulekileyo, i-disc ye-valve ihambelana ne-axis yepayipi, ukunciphisa ukuchasana nokuhamba kunye nokulahlekelwa kwengcinezelo. Xa ivaliwe, idiskhi yevalve ivalela kwisitulo esingaphakathi kumzimba wevalvu.
Lo matshini uvumela ukusebenza okukhawulezileyo kwevalvu, ngokuqhelekileyo ifuna kuphela ukujikeleza kwe-90-degree, iyenza ikhawuleze kuneevalvu ezijike kaninzi. Iivalvu zebhabhathane ezinamaphiko ziyakwazi ukujongana nokuhamba kwe-bidirectional kwaye ngokuqhelekileyo zixhotyiswe ngezihlalo eziqinileyo okanye zentsimbi ukuqinisekisa ukuvalwa okuqinileyo. Uyilo lwabo lubenza bafaneleke ngokukodwa kwiinkqubo ezifuna ukutshintshwa rhoqo okanye apho isithuba sinqongophele.
2. Amacandelo
Amacandelo aphambili aquka:
- Umzimba weValve: Izindlu zangaphandle, ngokuqhelekileyo ulwakhiwo oluphindwe kabini, lubonelela ngokudityaniswa kwesakhiwo kunye nezindlu zangaphakathi. Intsimbi yeCarbon isetyenziselwa ukusetyenziswa ngokubanzi, insimbi engenasici yokumelana nokugqwala, i-nickel-aluminiyam yobhedu kwindawo yaselwandle, kunye nentsimbi yealloy kwiimeko ezinzima.
-Idiskhi yeValve:Into ejikelezayo, ekhoyo kwi-streamlined okanye uyilo olusicaba, ilawula ukuhamba. I-disc inokuthi ibekwe embindini okanye i-offset ukuphucula ukusebenza. Intsimbi engatyiwayo, i-aluminiyam yobhedu, okanye iqatywe ngenayiloni ukuze kuphuculwe ukumelana nokunxiba.
- Isiqu: I-shaft edibanisa i-disc ye-valve kwi-actuator ihambisa amandla ajikelezayo. Insimbi engenasici okanye i-alloys ephezulu yokumelana ne-torque.
Nge-shaft okanye iziqwenga ezibini zisetyenziswa ngokuqhelekileyo, zixhotyiswe ngamatywina ukuthintela ukuvuza.
- Isihlalo: Umphezulu wokutywina wenziwe ngezinto ze-elastomeric ezifana ne-EPDM okanye i-PTFE. I-EPDM (-20°F ukuya ku-250°F), BUNA-N (0°F ukuya ku-200°F), Viton (-10°F ukuya ku-400°F), okanye PTFE (-100°F ukuya ku-450°F) isetyenziselwa amatywina athambileyo; izinto zetsimbi ezifana nentsimbi engenastainless okanye i-Inconel zisetyenziselwa amatywina aqinileyo obushushu obuphezulu.
-Umdlali: Isebenza ngesandla (isibambo, igiya) okanye inikwe amandla (i-pneumatic, umbane).
-Ukupakisha kunye neegaskets: Qinisekisa amatywina angavuziyo phakathi kwamalungu kunye noqhagamshelo lweflange.
La macandelo asebenza kunye ukubonelela ngolawulo lokuhamba oluthembekileyo.
3. Iintlobo zeeValuvu zebhabhathane ezineFlanged
Iivalve zebhabhathane ezinamaphiko zingahlelwa ngolu hlobo lulandelayo ngokusekwe kukulungelelaniswa kwediskhi, indlela yokusebenza, kunye nohlobo lomzimba.
3.1 Ulungelelwaniso
- I-Concentric (i-zero offset): Isiqu sevalve sidlula embindini wediski kwaye sinesihlalo esomeleleyo. Le valve ifanelekile kwizicelo zoxinzelelo oluphantsi kunye namaqondo okushisa ukuya kuma-250°F.
- I-double offset: I-valve stem ivaliwe emva kwediski kunye ne-off-center, ukunciphisa ukuguga kwesihlalo. Le valve ifanelekile kwizicelo zoxinzelelo oluphakathi kunye namaqondo okushisa ukuya kuma-400°F.
- Ukulinganisa kathathu: I-angle yesitulo esongeziweyo eyongeziweyo yenza intsimbi ukuya kwintsimbi yokutywina. Le valve ifanelekile kwi-high-pressure (ukuya kwi-Class 600) kunye nobushushu obuphezulu (ukuya kwi-1200°F) izicelo kwaye ihlangabezana neemfuno zokuvuza.
3.2 Indlela yokwenza
Iintlobo ze-actuation ziquka imanyuwali, ipneumatic, umbane, kunye nehydraulic ukulungiselela iimfuno zokusebenza ezahlukeneyo.
4. Izicelo zoShishino
Iivalvu zebhabhathane ezinamaphiko zisetyenziswa kakhulu kula macandelo alandelayo:
- Ukucocwa kwamanzi kunye naManzi amdaka: Asetyenziselwa ukulawulwa kokuhamba kwizityalo zonyango kunye neenkqubo zokuguqula. - Ukulungiswa kweekhemikhali: Ukuphatha i-asidi, i-alkali, kunye nezinyibilikisi kufuna izinto ezikwaziyo ukubola.
- Ioyile neGesi: Imibhobho yeoyile ekrwada, irhasi yendalo, kunye neenkqubo zokucokisa.
- IiNkqubo zeHVAC: Ilawula ukuhamba komoya kunye namanzi kwiinethiwekhi zokufudumeza kunye nokupholisa.
- Ukuveliswa koMbane: Ulawula umphunga, amanzi okupholisa, kunye namafutha.
- Ukutya kunye nesiselo: uyilo olucocekileyo lokuphathwa kwe-aseptic fluid.
- I-Pharmaceutical: Ulawulo oluchanekileyo kwiindawo ezikhuselekileyo.
-I-Marine & Pulp & Paper: Isetyenziselwa amanzi olwandle, i-pulp, kunye nokulungiswa kweekhemikhali.
5. Izinto eziluncedo kunye nezingeloncedo zeFlange Butterfly Valves
5.1 Izinto eziluncedo:
-I-compact kunye nekhaphukhaphu, ukunciphisa iindleko zofakelo kunye neemfuno zendawo.
- Ukusebenza ngokukhawuleza kwekota kunye nokuphendula ngokukhawuleza.
- Iindleko eziphantsi kwiidayamitha ezinkulu.
- Ilahleko yoxinzelelo oluphantsi xa ivulekile, inamandla kwaye isebenza kakuhle.
-Ifanelekile ukutshintshwa kwamanzi kunye nokusebenza kokutywina okugqwesileyo.
- Kulula ukuyigcina kwaye iyahambelana neenkqubo ezizenzekelayo.
5.2 Izinto ezingeloncedo:
- Idiskhi yevalve ivimba indlela yokuhamba xa ivuliwe, okukhokelela ekulahlekeni koxinzelelo oluthile. -Umthamo omncinci wokuxinzelela kwizicelo zoxinzelelo oluphezulu, ezinokuthi zibangele i-cavitation.
- Izihlalo zevalve ezithambileyo zinxiba ngokukhawuleza kumajelo arhabaxa.
- Ukuvala ngokukhawuleza kunokubangela ihamile yamanzi.
-Olunye uyilo lufuna iitorque eziphezulu zokuqala, ezifuna ii-activators ezinamandla.
6. Uyifaka njani iValve yebhabhathane
Ngexesha lofakelo, lungelelanisa i-valve flange kunye ne-pipe flange, uqinisekise ukuba imingxuma yebholithi iyahambelana.
Faka igasket ukuze utywine.
Qinisekisa ngeebholiti kunye namantongomane, uqinise ngokulinganayo ukukhusela ukuphazamiseka.
Iivalvu eziphindwe kabini zifuna ukulungelelaniswa kwamacala omabini ngaxeshanye; iivalve zohlobo lwelug zinokubotshwa icala elinye ngexesha.
Qwalasela inkululeko yediski yokuhambahamba ngokukhwele ivalve ngebhayisekile phambi kokuba ucinezele.
Xa ifakelwe ngokuthe nkqo, isiqu sevalve kufuneka sibekwe ngokuthe tye ukuthintela ukuqokelelana kwentlenga.
Soloko ulandela izikhokelo zomenzi kunye nemigangatho yovavanyo efana ne-API 598.
7. Imigangatho kunye neMimiselo
Iivalve zebhabhathane ezinamaphikokufuneka ihambelane nemigangatho yokhuseleko kunye nentsebenziswano:
- Uyilo: API 609, EN 593, ASME B16.34. - Uvavanyo: API 598, EN 12266-1, ISO 5208.
- IiFlanges: ASME B16.5, DIN, JIS.
-Izatifikethi: CE, SIL3, API 607.(ukhuseleko lomlilo).
8. Ukuthelekisa nezinye iiVave
Xa kuthelekiswa neevalvu zesango, iivalvu zebhabhathane ezijingiwe zisebenza ngokukhawuleza kwaye zibonelela ngesakhono sokugobhoza, kodwa ziyakwazi ukumelana nokuqukuqela.
Xa kuthelekiswa neevalvu zebhola, zinoqoqosho ngakumbi kwiidayamitha ezinkulu, kodwa zifumana ilahleko ephezulu yoxinzelelo ngexesha lokuvula.
Iivalvu zeglowubhu zibonelela ngokuchaneka okucokisekileyo, kodwa zikhulu kwaye zibiza kakhulu.
Ngokubanzi, iivalve zebhabhathane zigqwesa kwi-space-constraining kunye nezicelo ezingabizi kakhulu.