Kwicandelo lolawulo lolwelo lwemizi-mveliso,iivalvu zebhabhathaneidlala indima ebalulekileyo ekulawuleni, ekwalathiseni, nasekuhlukaniseni ukuhamba kolwelo, iigesi, kunye ne-slurry kwimibhobho. Ivalvu yebhabhathane e-flanged luhlobo olunye lohlobo loqhagamshelo, olune-integral flanges kumacala omabini omzimba wevalvu, oluvumela uqhagamshelo oluqinileyo lwebholti kwi-flanges zepayipi.
Indlela yokujikeleza ngekota ye-aivalvu yebhabhathane ejijekileyoIyahlula kwiivalvu ezithe nkqo ezifana neevalvu zesango okanye zeglobe, zibonelela ngeenzuzo zesantya kunye nokusebenza kakuhle kwendawo.
Eli nqaku liza kujonga iinkcukacha zeevalvu zebhabhathane ezijijekileyo, ligubungela uyilo lwazo, iintlobo, izixhobo, usetyenziso, iingenelo kunye neengxaki, ukufakelwa, ukugcinwa, uthelekiso nezinye iivalvu, kunye neendlela zexesha elizayo.
1. Inkcazo kunye noMgaqo-siseko wokuSebenza
Ivalvu yebhabhathane ejijekileyo yivalvu yokujikeleza ejikelezayo engama-90-degree ebonakaliswa yidiski elawula ukuhamba kolwelo ngokujikeleza kwesiqu. Umzimba wevalvu uneziphatho kuzo zombini iziphelo zokudibanisa iibholiti ngqo kumbhobho. Iivalvu zebhabhathane ezijijekileyo zineziphatho eziphakanyisiweyo okanye ezisicaba ezinemingxuma yebholiti, zibonelela ngoqhagamshelo oluqinileyo noluzinzileyo olufanelekileyo kwizicelo eziphantsi, eziphakathi, neziphezulu, kunye nobubanzi obuncinci, obuphakathi, nobukhulu.
Umgaqo wokusebenza ulula kwaye usebenza kakuhle. Ivalvu inomzimba wevalvu, idiski yevalvu, isiqu sevalvu, isihlalo sevalvu, kunye ne-actuator. Xa kusetyenzwa isiphatho okanye igiya, okanye isiqu sevalvu sijikeleziswa yi-actuator ezenzekelayo, idiski yevalvu ijikeleza ukusuka kwindawo ehambelana nendlela yokuhamba (evulekileyo ngokupheleleyo) ukuya kwindawo ethe nkqo (evaliwe ngokupheleleyo). Kwimeko evulekileyo, idiski yevalvu ihambelana ne-axis yombhobho, inciphisa ukumelana nokuhamba kunye nokulahleka koxinzelelo. Xa ivaliwe, idiski yevalvu iyavaleka kwisihlalo esingaphakathi komzimba wevalvu.
Le ndlela ivumela ukusebenza kwevalvu ngokukhawuleza, okuhlala kufuna ukujikeleza kwe-90-degree kuphela, okwenza kube ngokukhawuleza kunevalvu ezijika-jika ezininzi. Iivalvu zebhabhathane ezine-Flanged zinokusingatha ukuhamba kwe-bidirectional kwaye zihlala zixhotyiswe ngezihlalo eziqinileyo okanye zesinyithi ukuqinisekisa ukuvalwa okuqinileyo. Uyilo lwazo luzenza zifaneleke ngakumbi kwiinkqubo ezifuna ukutshintshwa rhoqo okanye apho indawo incinci khona.
2. Izinto eziyinxalenye
Izinto eziphambili ziquka:
- Umzimba weValve: Indlu yangaphandle, edla ngokuba yindlu enezikhonkwane ezimbini, inika unxibelelwano lwesakhiwo kwaye igcina izinto zangaphakathi. Intsimbi yekhabhoni isetyenziselwa ukusetyenziswa ngokubanzi, intsimbi engatyiwayo yokumelana nokugqwala, ithusi le-nickel-aluminium kwiindawo zaselwandle, kunye nentsimbi ye-alloy kwiimeko ezinzima.
- Idiski yeValve:Into ejikelezayo, efumaneka kwiidizayini ezicwangcisiweyo okanye ezithe tyaba, ilawula ukuhamba. Idiski ingafakwa embindini okanye ilungiswe ukuze kuphuculwe ukusebenza. Intsimbi engatyiwayo, ibronze yealuminiyam, okanye igqunywe ngenylon ukuze kuphuculwe ukumelana nokuguguleka.
- Isiqu: Umngxuma odibanisa idiski yevalvu kwi-actuator udlulisela amandla okujikeleza. Intsimbi engenasici okanye ii-alloys ezinamandla aphezulu ziyamelana ne-torque.
Iziqu ezisebenzisa umngxuma odlulayo okanye iziqwenga ezibini zisetyenziswa rhoqo, zixhotyiswe ngezitywino zokuthintela ukuvuza.
- Isihlalo: Umphezulu wokutywina wenziwe ngezinto ezithambileyo ezifana ne-EPDM okanye i-PTFE. EPDM (-20)°F ukuya kwi-250°F), BUNA-N (0°F ukuya kuma-200°F), iViton (-10°F ukuya kwi-400°F), okanye i-PTFE (-100°F ukuya kwi-450°F) isetyenziselwa izitywini ezithambileyo; izinto zesinyithi ezifana nentsimbi engagqwaliyo okanye i-Inconel zisetyenziselwa izitywini eziqinileyo ezishushu kakhulu.
- I-Actuator: Isebenza ngesandla (ngesiphatho, igiya) okanye inikwe amandla (ngomoya, ngombane).
- Ukupakisha kunye nee-gaskets: Qinisekisa ukuba izivalo ezivalekileyo phakathi kwezinto kunye noqhagamshelo lweflange ziyavuthuluka.
Ezi nxalenye zisebenza kunye ukubonelela ngolawulo oluthembekileyo lokuhamba kwamanzi.
3. Iintlobo zeeValve zeBhabhatha eziFlanged
Iivalvu zebhabhathane ezineFlanged zingahlulwa ngolu hlobo lulandelayo ngokusekelwe kukulungelelaniswa kweediski, indlela yokusebenza, kunye nohlobo lomzimba.
3.1 Ulungelelwaniso
- I-Concentric (zero offset): I-valve stem idlula embindini wediski kwaye inesihlalo esiqinileyo. Le valve ifanelekile ukusetyenziswa koxinzelelo oluphantsi kunye namaqondo obushushu afikelela kwi-250°F.
- Ukucima kabini: Isiqu sevalvu sivaliwe ngasemva kwediski nangaphandle kombindi, nto leyo enciphisa ukuguguleka kwesihlalo. Le valve ifanelekile ukusetyenziswa koxinzelelo oluphakathi kunye namaqondo obushushu afikelela kuma-400°F.
- Ukunciphisa kathathu: I-engile yesihlalo esonyukileyo idala isitywino sentsimbi ukuya kwisinyithi. Le valve ifanelekile kwi-high pressure (ukuya kuthi ga kwi-Class 600) kunye ne-high temperature (ukuya kuthi ga kwi-1200).°F) izicelo kwaye ziyahlangabezana neemfuno zokungavuzi nto.
3.2 Indlela yoKwenza
Iindidi ze-activation ziquka i-manual, i-pneumatic, i-electric, kunye ne-hydraulic ukuze kuhlangatyezwane neemfuno ezahlukeneyo zokusebenza.
4. Izicelo zoShishino
Iivalvu zebhabhathane ezijijekileyo zisetyenziswa kakhulu kwezi ndawo zilandelayo:
- Unyango lwamanzi amdaka kunye namanzi amdaka: Isetyenziselwa ukulawula ukuhamba kwamanzi kwizityalo zonyango kunye neenkqubo zokuphambukisa amanzi. - Ukucubungula iikhemikhali: Ukuphatha ii-asidi, ii-alkalis, kunye nezinyibilikisi kufuna izinto ezimelana nokugqwala.
- Ioyile neGesi: Ukufaka imibhobho yeoyile ekrwada, igesi yendalo, kunye neenkqubo zokucocwa.
- Iinkqubo ze-HVAC: Zilawula ukuhamba komoya namanzi kwiinethiwekhi zokufudumeza nezokupholisa.
- Ukuveliswa koMbane: Ulawula umphunga, amanzi okupholisa, kunye namafutha.
- Ukutya Neziselo: Uyilo olucocekileyo lokuphatha ulwelo olungenatyhefu.
- Amayeza: Ulawulo oluchanekileyo kwiindawo ezicocekileyo.
- I-Marine & Pulp & Paper: Isetyenziselwa amanzi olwandle, i-pulp, kunye nokucubungula iikhemikhali.
5. Iingenelo kunye nokungalungi kweeFlange Butterfly Valves
5.1 Iingenelo:
- Incinci kwaye ilula, inciphisa iindleko zokufakela kunye neemfuno zendawo.
- Ukusebenza ngokukhawuleza kwekota kunye nokuphendula ngokukhawuleza.
- Ixabiso eliphantsi leedayamitha ezinkulu.
- Ukulahleka koxinzelelo oluphantsi xa luvuliwe, lusebenzisa amandla kakuhle kwaye lusebenza kakuhle.
- Ifanelekile ekutshintsheni ulwelo kunye nokusebenza kakuhle kokutywina.
- Kulula ukuyigcina kwaye iyahambelana neenkqubo zokuzenzekelayo.
5.2 Izinto ezingalunganga:
- Idiski yevalvu ivala indlela yokuhamba kwamanzi xa ivuliwe, nto leyo ebangela ukulahleka koxinzelelo. - Umthamo omncinci wokubhoboza kwizicelo zoxinzelelo oluphezulu, nto leyo enokubangela ukucaphuka kwesisu.
- Izitulo zeevalvu ezithambileyo ziguga ngokukhawuleza xa zisetyenziswa kwi-abrasive media.
- Ukuvala ngokukhawuleza kakhulu kunokubangela ukuba kubekho ihamile yamanzi.
- Ezinye iindlela zoyilo zifuna ii-torque zokuqala eziphezulu, zifuna ii-actuators eziqinileyo.
6. Indlela yokufaka iValve yeButterfly
Ngexesha lokufakela, lungelelanisa i-flange yevalvu ne-flange yombhobho, uqinisekise ukuba imingxunya yebholithi iyahambelana.
Faka i-gasket ukuze uyivale.
Ziqinise ngeebholiti kunye neenati, uziqinise ngokulinganayo ukuze zingaphazamisi.
Iivalvu ezineeflange ezimbini zifuna ukulungelelaniswa kwamacala omabini ngaxeshanye; iivalvu zohlobo lwe-lug zinokubotshelelwa kwicala elinye ngexesha.
Jonga inkululeko yokuhamba kwediski ngokuqhuba ivalvu ngaphambi kokuba uyicinezele.
Xa ifakelwe ngokuthe nkqo, isiqu sevalvu kufuneka sibekwe ngokuthe tye ukuze kuthintelwe ukuqokelelana kwenkunkuma.
Landela rhoqo izikhokelo zomenzi kunye nemigangatho yovavanyo efana ne-API 598.
7. Imigangatho neMimiselo
Iivalvu zebhabhathane ezijijekileyokufuneka ihambelane nemigangatho yokhuseleko kunye nokusebenzisana:
- 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. Uthelekiso nezinye iiValve
Xa kuthelekiswa neevalvu zesango, iivalvu zebhabhathane ezijijekileyo zisebenza ngokukhawuleza kwaye zinika amandla okubhoboza, kodwa azixhathisi kangako ukuhamba kwamanzi.
Xa kuthelekiswa neevalvu zebhola, zingabizi kakhulu kwiidayamitha ezinkulu, kodwa zilahlekelwa kakhulu kuxinzelelo ngexesha lokuvula.
Iivalvu zeglobe zibonelela ngokuchaneka okungcono, kodwa zinkulu kwaye zibiza kakhulu.
Lilonke, iivalvu zebhabhathane zigqwesile kwiindlela ezithintela indawo kakhulu nezixabisa kakhulu.