Ukuqonda iiValuvu zebhabhathane ezisebenza ngokuPhezulu
Iivalvu zebhabhathane ezisebenza ngokuphezulu zongeza indima ebalulekileyo edlalwa ziivalvu zebhabhathane kwimisebenzi yemizi-mveliso. Ezi zivalo zinokulawula ngokufanelekileyo ukuhamba kolwelo. Ngenxa yokuba iivalve zebhabhathane ezisebenza kakhulu zixhathisa kakhulu kwiimeko ezinzima. Ukushisa okuphezulu kunye noxinzelelo oluphezulu aluchaphazeli ukusebenza kwabo. Ishishini lithembele kubo ekusebenzeni okuthembekileyo kunye nokuzinza.
1. Yintoni ivalve yebhabhathane esebenza kakhulu?
Nangona ivalve yebhabhathane esebenza kakhulu yamkele uyilo olulodwa, ulwakhiwo olusisiseko kunye nomgaqo wokusebenza ziyafana nezivalo zebhabhathane eziqhelekileyo. Ibandakanya umzimba wevalve, idiski yevalve, ishaft kunye nesitulo sevalve. I-valve disc ijikeleza i-shaft ukulawula ukuhamba kwamanzi. Isitulo sevalve sibonelela ngokutywina ukuthintela ukuvuza.
Iivalve zebhabhathane ezisebenza ngokuphezulu zixhomekeke kwiivalve zebhabhathane eziphindwe kabini, kwaye ukusebenza kwayo kuxhomekeke kwiindlela eziphucukileyo. Idiskhi yoyilo lwevalvu ephindwe kabini isuka kude kwisihlalo sevalve kwangoko kwinkqubo yokuvula, ngaloo ndlela inciphisa ukungqubana kunye nokunxiba kumphezulu wokutywina.
Iivalve zebhabhathane ezisebenza kakhulu zigqwesa kwiindawo ezinoxinzelelo oluphezulu. Amashishini afana neoli kunye negesi afuna ukusebenza kwevalve ethembekileyo. Ezi zivalo zinokumelana noxinzelelo olunokonakalisa iivalvu eziqhelekileyo. Izakhono zokutywina eziphezulu zithintela ukuvuza phantsi koxinzelelo oluphezulu.
Ishishini kufuneka liqonde ukuba zeziphi iivalvu zamabhabhathane ezisebenza kakhulu? Zisetyenziswe nini? Ukhetho olufanelekileyo luqinisekisa ukusebenza ngokufanelekileyo kunye nokuzinza kwenkqubo. Iivalve zebhabhathane ezisebenza kakhulu zibonelela ngokuthembeka okufunekayo kwizicelo ezifunwayo.
2. Iimpawu zeevalve ze-butterfly ezisebenza kakhulu, ukuhlukana kwiivalve zebhabhathane eziqhelekileyo
2.1 Ukukhethwa kwezinto eziphathekayo
Iivalve zebhabhathane ezisebenza kakuhle zisebenza kakuhle kwiindawo ezirhabaxa, singasathethi ke ngeendawo eziqhelekileyo, ezithi zigqithise, ngoko ke intsimbi elungileyo kufuneka isetyenziswe kwiblade. Izinto ezinamandla ziphucula ukuqina kunye nokuthembeka. Insimbi engenasici kunye ne-WCB zikhetho eziqhelekileyo. Intsimbi engatyiwayo ayivani nomhlwa kwaye iyamelana nobushushu obugqithisileyo. Ukukwazi ukumelana neemeko ezinzima kwenza ezi zivalo zibe yimfuneko.
2.2 Itekhnoloji yokutywina
Itekhnoloji yokutywina idlala indima ebalulekileyo ekusebenzeni kwevalvu. Amatywina aphezulu athintela ukuvuza kunye nokugcina ingqibelelo yoxinzelelo. Uyilo oluphindwe kabini lubonelela ngezakhono ezibalaseleyo zokutywina. Olu yilo lunciphisa ukungqubana kunye nokunxiba kwindawo yokutywina. Isiphumo bubomi benkonzo obude kunye neemfuno ezincitshisiweyo zokulondolozwa.
2.3 Iqondo loxinzelelo
Iivalve zebhabhathane ezisebenza ngokufanelekileyo zinokuphatha ngokufanelekileyo iimeko ezinoxinzelelo oluphezulu. Ngokuqhelekileyo ukuya kwiKlasi ye-300 (PN40). Ukukwazi ukugcina ingqibelelo phantsi koxinzelelo kubalulekile. Amashishini afana neoli kunye negesi afuna ulawulo oluthembekileyo loxinzelelo.
2.4 Ukumelana nobushushu
Ukumelana nobushushu luphawu oluphambili lokusebenza kwevalvu. Ii-HPBVs zinokusebenza kumaqondo obushushu aphezulu, aqhele ukuya kuma-500°F (260°C) nangaphezulu. Ukukwazi ukusebenza kumaqondo obushushu aphezulu kwandisa ukuguquguquka kwabo. Obu buchule bubenza bafaneleke kwiinkqubo zomphunga, ukuveliswa kwamandla, kunye nokulungiswa kweekhemikhali.
3. Umahluko kwiivalvu zebhabhathane eziqhelekileyo
Umahluko phakathi kweevalvu zebhabhathane ezisebenza kakhulu kunye neevalvu zebhabhathane eziqhelekileyo.
3.1. Uyilo lwesakhiwo
Iivalvu zebhabhathane ezisebenza kakhulu: ngokuqhelekileyo ubume be-eccentric ephindwe kabini, uqhagamshelwano phakathi kwepleyiti yevalve kunye nomphezulu wokutywina uyancitshiswa. Ngoko into yokutywina inobomi obude.
Iivalve zebhabhathane eziqhelekileyo: ubume obunzulu, ipleyiti yevalve kunye nendawo yokutywina inokunxibelelana ngakumbi xa ivula naxa ivala, kwaye umphezulu wokutywina unxiba ngokukhawuleza.
3.2. Inqanaba loxinzelelo
Iivalve zebhabhathane ezisebenza kakhulu: zifanelekile ngokubanzi kwiinkqubo zoxinzelelo oluphakathi kunye noxinzelelo oluphezulu, kunye noxinzelelo olunamandla lokuthwala amandla (ukuya kwi-PN25, i-PN40 nangaphezulu).
Iivalve zebhabhathane eziqhelekileyo: zisetyenziswa kakhulu kwiinkqubo zoxinzelelo oluphantsi, zifanelekile ngokubanzi kwi-PN10, i-PN16 yoxinzelelo olusebenzayo.
3.3. Uluhlu lobushushu
Iivalve zebhabhathane ezisebenza kakhulu: zingasetyenziswa kwiimeko zobushushu obuphezulu, kwaye zinokugcina ukusebenza kokutywinwa kumaqondo obushushu agqithisileyo.
Iivalvu zebhabhathane eziqhelekileyo: zifanelekile ngokubanzi kubushushu obuphantsi okanye iimeko zobushushu obuqhelekileyo, ezinoluhlu olulinganiselweyo lobushushu.
3.4. Iimeko zesicelo
Iivalve ze-butterfly ezisebenza kakhulu: zisetyenziswa ngokubanzi kwiindawo zoshishino ezifana ne-petrochemicals, igesi yendalo, i-steam, unyango lwamanzi, ubushushu obuphezulu kunye neemeko zoxinzelelo oluphezulu, ezifanelekileyo kulawulo lwamanzi phantsi kweemeko ezinzima.
Iivalvu zebhabhathane eziqhelekileyo: ikakhulu ezisetyenziswa kwiimeko ezinobuthathaka ezifana neenkqubo zoxinzelelo oluphantsi loxinzelelo lwamanzi, i-HVAC, kunye neenkqubo zoshishino eziqhelekileyo, kunye neemeko zokusetyenziswa zilula.
3.5. Ukukhetha izinto eziphathekayo
Iivalvu zebhabhathane ezisebenza ngokuphezulu: Umzimba wevalvu udla ngokwenziwa ngezinto ezikwaziyo ukutyiwa kunye nobushushu obuphezulu njengentsimbi engatyiwa, i-wcb, kunye nentsimbi yealloy, kwaye izitywina ubukhulu becala zizitywina zetsimbi okanye izitywina ezithambileyo ezongeziweyo.
Iivalvu zebhabhathane eziqhelekileyo: Izixhobo zomzimba zevalvu ziyintsimbi etyhidiweyo okanye i-ductile iron, kwaye amatywina ubukhulu becala zizinto zokutywina ezithambileyo ezifana nerabha kunye nepolytetrafluoroethylene.
3.6. Ixabiso
Iivalvu zebhabhathane ezisebenza ngokuphezulu: Ngenxa yoyilo oluntsonkothileyo, izinto eziphucukileyo, kunye neenkqubo zokuvelisa kakuhle, ixabiso liphezulu, ngoko ke ixabiso liyabiza.
Iivalve zebhabhathane eziqhelekileyo: isakhiwo esilula, ixabiso eliphantsi, kunye nexabiso eliphantsi.
4. Ukusetyenziswa kwezivalo zebhabhathane ezisebenza kakhulu
4.1 I-oyile negesi
Kwiinkqubo zokumbiwa kweemigodi ezinyukayo kunye nasezantsi kweshishini le-oyile kunye negesi, iivalve zebhabhathane ezisebenza kakhulu zidlala indima ephambili. Ngenxa yokuba uxinzelelo oluphezulu kunye nokushisa okuphezulu kwamanzi kufuneka kulawulwe ngokuchanekileyo ukuqinisekisa ukhuseleko lokusebenza kunye nokusebenza kakuhle. Ubuchule obubalaseleyo bokutywina beevalvu zebhabhathane ezisebenza ngokuphezulu kuthintela ukuvuza kunye nokugcina ingqibelelo yenkqubo.
4.2 Ukwenziwa kweMichiza
Iikhemikhali ezonakalisayo zixhaphakile kwizityalo ezisebenza ngemichiza. Iivalve zebhabhathane ezisebenza ngokuphezulu zinolwakhiwo oluhlala ixesha elide kunye nesakhono sokutywina esigqwesileyo ukuhlangabezana ngokupheleleyo nemiceli mngeni yeendawo ezinjalo.
4.3 Ukuveliswa koMbane
Izibonelelo zokuvelisa amandla zixhamla kwiivalve zebhabhathane ezisebenza kakhulu, ngakumbi kwiinkqubo zomphunga kunye nokusebenza kweinjini yomoya. Ulawulo oluchanekileyo lomphunga olushushu kakhulu luyimfuneko ukuze kuphunyezwe ukusebenza kakuhle kunye nokusebenza kakuhle kwamandla.
4.4 Ukucocwa kwamanzi
Amaziko okucoca amanzi asebenzisa izivalo zebhabhathane ezisebenza kakhulu ukulawula ukuhamba kwamanzi kunye namanzi amdaka. Ezi zivalo zinokuphatha ngokufanelekileyo uxinzelelo kunye namaqondo okushisa ahlukeneyo. Ukukwazi ukusebenza ngokuthembekileyo phantsi kweemeko ezinzima kuqinisekisa inkqubo yonyango esebenzayo.
5. Iingqwalasela zoKhetho
5.1 IiMfuno zesicelo
Iivalvu zebhabhathane ezisebenza kakhulu kufuneka zihlangabezane neemfuno ezithile zokusetyenziswa. Uhlobo lolwelo kunye neempawu kufuneka zivavanywe phambi kokuthenga. Uxinzelelo kunye neqondo lokushisa kufuneka lihambelane neemfuno zokusebenza. Ukukhetha i-valve efanelekileyo kuqinisekisa ukusebenza kakuhle kunye nokhuseleko.
5.2 IiMeko zokusiNgqongileyo
Iimeko zokusingqongileyo zidlala indima ebalulekileyo ekukhetheni ivalve yebhabhathane. Amaqondo obushushu aphezulu kunye neemekobume ezonakalisayo zifuna izinto ezirhabaxa. Intsimbi engatyiwayo okanye i-PTFE inika ukuxhathisa okugqwesileyo kokutya. Ukhetho olufanelekileyo lwandisa ubomi benkonzo kunye nokuthembeka.
Isishwankathelo
Iivalvu zebhabhathane ezisebenza ngokuphezulu zibonelela ngeenzuzo ezibalulekileyo kwimisebenzi yoshishino. Ngokuphumeza ezi zivalo kwiinkqubo zabo, amashishini azuza ngokunyuka kokusebenza kunye nokuthembeka. Uyilo olomeleleyo luqinisekisa ukusebenza kakuhle phantsi kweemeko ezinzima, ukuphucula ukhuseleko kunye neenzuzo zezoqoqosho.
IziNzuzo eziPhambili:
• Ukusebenza kakuhle: Iivalvu ezisebenza ngokuphezulu zibonelela ngoxinzelelo oluphantsi lokwehla kunye nofakelo olubambeneyo.
• Ukusebenza kweendleko: Uyilo olulula lunciphisa iindleko zempahla kunye neemfuno zokulondoloza.
• I-Versatility: Ilungele ubushushu obuphezulu kunye nobukhulu obukhulu bezicelo.
Amashishini kufuneka abeke phambili ukukhethwa kweevalve zebhabhathane ezifanelekileyo ezisebenza kakuhle ukuqinisekisa ukuzinza kwexesha elide kunye nokusebenza kakuhle.