A uvemvane valveiyithuluzi lokulawula uketshezi. Isebenzisa ukuphenduka oku-1/4 ukuze ilawule ukuhamba kwemidiya ezinqubweni ezihlukahlukene. Ukwazi izinto kanye nemisebenzi yezingxenye kubalulekile. Kuyasiza ukukhetha i-valve efanele ukusetshenziswa okuthile. Ingxenye ngayinye, kusukela emzimbeni we-valve kuya esiqwini se-valve, inomsebenzi othize. Zenziwe ngezinto ezifanele isicelo. Wonke adlala indima ebalulekile ekuqinisekiseni ukusebenza kahle nokugcinwa kahle. Ukuqonda kahle lezi zingxenye kungathuthukisa ukusebenza kwesistimu nempilo yesevisi. Ama-valve ovemvane asetshenziswa emikhakheni eminingi ngenxa yokuguquguquka kwawo. Izimboni ezifana nokuhlanza amanzi, ukucubungula amakhemikhali, nokudla neziphuzo zisebenzisa la mavalvu. Ama-valve ovemvane angakwazi ukubhekana nezingcindezi namazinga okushisa ahlukene. Ngakho-ke, zifanelana nezindawo ezidinga kakhulu neziphansi. Ngaphezu kwalokho, izindleko eziphansi kanye nokulula kokufakwa kwenza ivelele phakathi kwama-valve amaningi.
1. I-Butterfly Valve Ingxenye Igama: Umzimba we-Valve
Umzimba wevalve uvemvane uyigobolondo. Isekela i-valve disc, isihlalo, isiqu, kanye ne-actuator. Iumzimba we-butterfly valveisetshenziselwa ukuxhuma epayipini ukugcina i-valve isendaweni yayo. Futhi, umzimba we-valve kufanele umelane nezingcindezi nezimo ezihlukahlukene. Ngakho-ke, ukwakheka kwayo kubalulekile ekusebenzeni kwayo.
Impahla yomzimba ye-valve
Izinto ezibonakalayo ze-valve zincike epayipini nakumamidiya. Kubuye kuncike endaweni ezungezile.
Okulandelayo yizinto ezisetshenziswa kakhulu.
-Insimbi, uhlobo olushibhe kunazo zonke lwe-valve uvemvane lwensimbi. Inokumelana okuhle nokugqokwa.
-Insimbi enezimbotshana, uma kuqhathaniswa ne-cast iron, inamandla angcono, ukumelana nokugqoka kanye ne-ductility engcono. Ngakho kufanelekile izicelo zezimboni ezijwayelekile.
-Insimbi engagqwali, inokuqina okukhulu nokumelana nokugqwala. Kungcono uketshezi olubolayo kanye nokusetshenziswa kwenhlanzeko.
-WCB,ngobulukhuni bayo obuphezulu namandla, ifanele ukucindezela okuphezulu, izicelo zokushisa okuphezulu. Futhi iyashisela.
2. Butterfly Valve Ingxenye Igama: Valve disc
Ii-butterfly valve discitholakala maphakathi nomzimba we-valve futhi izungeza ukuze ivule noma ivale i-valve uvemvane. Impahla ithintana ngqo noketshezi. Ngakho-ke, kufanele kukhethwe ngokusekelwe kuzakhiwo ze-medium. Izinto ezijwayelekile zifaka i-sphere nickel plating, inayiloni, irabha, insimbi engagqwali, ne-aluminium bronze. Idizayini encane yediski ye-valve inganciphisa ukumelana nokugeleza, ngaleyo ndlela yonge amandla futhi ithuthukise ukusebenza kahle kwe-valve uvemvane.
izinhlobo ze-valve disc.
Uhlobo lwe-valve disc: Kunezinhlobo eziningana zama-valve discs zezinhlelo zokusebenza ezahlukene.
- I-disc ye-valve ephakathiiqondaniswe nenkaba yomzimba we-valve. Kulula futhi kuyabiza.
- I-Disc eccentric valve discinomucu werabha oshumekwe onqenqemeni lwepuleti levalvu. Ingathuthukisa ukusebenza kokubeka uphawu.
I-triple eccentric disciyinsimbi. Ivala kangcono futhi igqoke kancane, ngakho-ke ilungele izindawo ezinomfutho ophezulu.
3. I-Butterfly Valve Ingxenye Igama: Isiqu
Isiqu sixhuma i-actuator yebhokisi le-disc. Idlulisa ukuzungezisa namandla adingekayo ukuze uvule noma uvale i-valve uvemvane. Le ngxenye idlala indima ebalulekile ekusebenzeni ngomshini kwe-valve uvemvane. Isiqu kufanele simelane ne-torque eminingi kanye nengcindezi ngesikhathi sokusebenza. Ngakho-ke, izidingo zezinto ezibonakalayo ezidingekayo ziphezulu.
I-valve stem material
Isiqu ngokuvamile senziwe ngezinto eziqinile, njengensimbi engagqwali nethusi le-aluminium.
-Insimbi engagqwaliinamandla futhi imelana nokugqwala.
-Aluminium yethusiimelana nayo kahle kakhulu. Baqinisekisa ukwethembeka kwesikhathi eside.
-Ezinye izintokungase kuhlanganise insimbi ye-carbon noma ama-alloys. Zikhethelwa izidingo ezithile zokusebenza.
4. I-Butterfly Valve Ingxenye Igama: Isihlalo
Isihlalo ku-valve uvemvane sakha uphawu phakathi kwe-disc nomzimba we-valve. Lapho i-valve ivaliwe, i-disc icindezela isihlalo. Lokhu kuvimbela ukuvuza futhi kugcina uhlelo lwamapayipi lunjalo.
Iisihlalo butterfly valvekumele imelane nezingcindezi namazinga okushisa ahlukahlukene. Ukukhethwa kwempahla yokuhlala kuncike ohlelweni oluthile. Irabha, i-silicone, i-Teflon namanye ama-elastomers yizinqumo ezivamile.
Izinhlobo zezihlalo zevalvu
Kunezinhlobo eziningana zezihlalo ukuhlangabezana nezicelo ezahlukene. Izinhlobo ezivame kakhulu yilezi:
-Izihlalo zamavalvu ezithambile: Yenziwe ngerabha noma i-Teflon, iyaguquguquka futhi iqinile. Lezi zihlalo zilungele izinhlelo zokusebenza ezinengcindezi ephansi, izinga lokushisa elivamile elidinga ukuvala ngci.
-Zonke izihlalo valve metal: zenziwe ngezinsimbi, njengensimbi engagqwali. Bangakwazi ukumelana namazinga okushisa aphezulu nezingcindezi. Lezi zihlalo zama-valve zifanele izindawo ezifuna ukuqina ezidinga ukuqina.
-Izihlalo zamavalvu ezihlukene: Yenziwe nge-graphite nensimbi enqwabelene ngesikhathi esisodwa. Bahlanganisa izici zezihlalo ze-valve ezithambile nezihlalo ze-valve zensimbi. Ngakho, Lesi sihlalo esinezendlalelo eziningi sifinyelela ibhalansi phakathi kokuguquguquka namandla. Lezi zihlalo zama-valve ezezinhlelo zokusebenza zokuvala ezisebenza kahle kakhulu. Ziyakwazi ukuvala ngisho nalapho zigqokile.
5. I-Actuator
I-actuator iwumshini osebenzisa i-valve uvemvane. Iphendulela i-valve plate ukuze ivule noma ivale ukugeleza. I-actuator ingaba imanuwali (isibambo noma igiya lezikelemu) noma i-othomathikhi (i-pneumatic, kagesi, noma i-hydraulic).
Izinhlobo nezinto zokwakha
-Bamba:Yenziwe ngensimbi noma ngensimbi ekhonjiwe, elungele ama-valve emvemvane we-DN≤250.
- Imishini ye-worm:Ifanele amavalvu ovemvane anoma yiliphi izinga, ukonga abasebenzi kanye nenani eliphansi. Ama-gearbox anganikeza inzuzo yomshini. Benza kube lula ukusebenzisa ama-valve amakhulu noma aphezulu.
- Ama-actuator we-pneumatic:sebenzisa umoya ocindezelwe ukusebenzisa ama-valve. Ngokuvamile zenziwe nge-aluminium noma insimbi.
- Ama-actuator kagesi:sebenzisa ama-motor kagesi futhi afakwe ezindlini ezenziwe ngezinto ezifana ne-aluminium noma insimbi engagqwali. Kunezinhlobo ezibalulekile nezihlakaniphile. Amakhanda kagesi angangeni manzi futhi angaqhumi nawo angakhethwa ezindaweni ezikhethekile.
Ama-Actuator we-Hydraulic:sebenzisa uwoyela we-hydraulic ukuze usebenzise ama-butterfly valves. Izingxenye zabo zenziwe ngensimbi noma ezinye izinto eziqinile. Ihlukaniswe yaba amakhanda omoya abambayo kanye nakabili.
6. Izihlathi
Ama-Bush asekela futhi anciphise ukungqubuzana phakathi kwezingxenye ezihambayo, njengeziqu ze-valve nemizimba. Baqinisekisa ukusebenza kahle.
Izinto zokwakha
- PTFE (Teflon):ukungqubuzana okuphansi nokumelana okuhle kwamakhemikhali.
- Ibhulonzi:amandla aphezulu kanye nokumelana okuhle kokugqoka.
7. Ama-Gaskets nama-O-rings
Ama-Gaskets nama-O-rings yizici zokuvala. Zivimbela ukuvuza phakathi kwezingxenye ze-valve naphakathi kwama-valve namapayipi.
Izinto zokwakha
- I-EPDM:evame ukusetshenziswa emanzini kanye ne-steam izicelo.
- I-NBR:ilungele ukusetshenziswa kwamafutha kanye nophethiloli.
- I-PTFE:Ukumelana namakhemikhali aphezulu, okusetshenziselwa izicelo zamakhemikhali ezinolaka.
- Viton:Yaziwa ngokumelana namazinga okushisa aphezulu kanye namakhemikhali anolaka.
8. Amabhawodi
Amabhawudi abamba izingxenye zevalve uvemvane ndawonye. Baqinisekisa ukuthi i-valve iqinile futhi ayivuzi.
Izinto zokwakha
- Insimbi engagqwali:Ikhethwa ngenxa yokumelana nokugqwala namandla.
- Carbon steel:Isetshenziswa ezindaweni ezingagqwali kakhulu.
9. Izikhonkwane
Izikhonkwane zixhuma i-disc esiqwini, okuvumela ukunyakaza okujikelezayo okubushelelezi.
Izinto zokwakha
- Insimbi engagqwali:Ukumelana nokugqwala namandla aphezulu.
- Ibhulonzi:Ukumelana nokugqoka kanye nokusebenza kahle komshini.
10. Izimbambo
Izimbambo zinikeza ukwesekwa okwengeziwe kwesakhiwo kudiski. Bangakwazi ukuvimbela deformation ngaphansi kwengcindezi.
Izinto zokwakha
- Insimbi:Amandla aphezulu nokuqina.
- Aluminium:Ifanele izinhlelo zokusebenza ezingasindi.
11. Ama-Linings nama-coatings
Amalayini kanye nama-coatings avikela umzimba we-valve nezingxenye ekugqwaleni, ukuguguleka, nokuguga.
- Imigqa yerabha:Okufana ne-EPDM, NBR, noma i-neoprene, esetshenziswa ezinhlelweni ezonakalisayo noma ezilimazayo.
- PTFE enamathela:ukumelana kwamakhemikhali kanye nokungqubuzana okuphansi.
12. Izinkomba zesikhundla
Inkomba yendawo ibonisa isimo esivulekile noma esivaliwe se-valve. Lokhu kusiza amasistimu akude noma azenzakalelayo ukuqapha indawo yevalvu.
Izinhlobo
- Mechanical:inkomba elula yomshini enamathiselwe ku-valve stem noma i-actuator.
- Ezogesi:inzwa