Ukuqonda Amavavu Evemvane Asebenza Kakhulu
Amavalvu ovemvane asebenza kahle kakhulu athuthukisa indima ebalulekile edlalwa amavalvu ovemvane emisebenzini yezimboni. Lawa ma-valve angakwazi ukulawula kahle ukugeleza koketshezi. Ngoba ama-valve ovemvane asebenza kahle amelana kakhulu nezimo ezimbi kakhulu. Amazinga okushisa aphezulu kanye nezingcindezi eziphezulu akuthinti ukusebenza kwazo. Imboni ithembele kuzo ekusebenzeni okuthembekile nokuzinza.
1. Iyini i-valve yevemvane esebenza kahle kakhulu?
Nakuba i-valve butterfly esebenza kahle kakhulu yamukela umklamo oyingqayizivele, isakhiwo esiyisisekelo kanye nesimiso sokusebenza kuyafana namavalve ovemvane avamile. Kuhlanganisa umzimba we-valve, i-valve disc, i-shaft kanye nesihlalo se-valve. I-valve disc izungeza i-shaft ukuze ilawule ukugeleza koketshezi. Isihlalo se-valve sinikeza uphawu lokuvimbela ukuvuza.
Ama-valve ovemvane asebenza kahle kakhulu ancike kuma-valve uvemvane ane-eccentric kabili, futhi ukusebenza kwawo kuncike ezindleleni ezithuthukisiwe. Idizayini ye-valve ye-double-offset design isuka esihlalweni se-valve ekuqaleni kwenqubo yokuvula, ngaleyo ndlela inciphisa ukungqubuzana nokuguga endaweni yokuvala.
Amavalvu ovemvane asebenza kahle kakhulu ezindaweni ezinengcindezi ephezulu. Izimboni ezifana nowoyela negesi zidinga ukusebenza okuthembekile kwe-valve. Lawa ma-valve angakwazi ukumelana nokucindezela okungalimaza ama-valve avamile. Amandla okubeka uphawu aphezulu avimbela ukuvuza ngaphansi kwengcindezi ephezulu.
Imboni kufanele iqonde ukuthi ayini ama-butterfly valves asebenza kahle kakhulu? Zisetshenziswa nini? Ukukhetha okulungile kuqinisekisa ukusebenza kahle kanye nokuzinza kwesistimu. Amavalvu ovemvane asebenza kahle ahlinzeka ngokuthembeka okudingekayo ezicelweni ezifunayo.
2. Izici zamavalve emvemvane asebenza kahle kakhulu, umehluko ovela kumavalve ovemvane ajwayelekile
2.1 Ukukhethwa kwezinto
Ama-valve ovemvane asebenza kahle kakhulu asebenza kahle ezindaweni ezinokhahlo, ingasaphathwa eyezimo ezivamile, ezimane nje ziyi-overkill, ngakho-ke insimbi enhle kufanele isetshenziswe ku-blade. Izinto eziqinile zithuthukisa ukuqina nokuthembeka. Insimbi engagqwali kanye ne-WCB yizinketho ezijwayelekile. Insimbi engagqwali imelana nokugqwala futhi imelana nezinga lokushisa elidlulele. Ikhono lokumelana nezimo ezinzima lenza la ma-valve abaluleke kakhulu.
2.2 Ubuchwepheshe bokuvala uphawu
Ubuchwepheshe bokubeka uphawu budlala indima ebalulekile ekusebenzeni kahle kwama-valve. Izigxivizo ezithuthukisiwe zivimbela ukuvuza futhi zigcina ubuqotho bengcindezi. Imiklamo e-eccentric ekabili ihlinzeka ngamakhono amahle kakhulu okuvala. Le miklamo inciphisa ukungqubuzana nokuguga endaweni yokuvala. Umphumela uba impilo ende yesevisi kanye nezimfuneko zokunakekela ezincishisiwe.
2.3 Isilinganiso sokucindezela
Amavalvu ovemvane asebenza kahle angakwazi ukuphatha kahle izindawo ezinomfutho ophezulu. Ngokuvamile kufika ku-Class 300 (PN40). Ikhono lokugcina ubuqotho ngaphansi kwengcindezi libalulekile. Izimboni ezifana nowoyela negesi zidinga ukuphathwa kwengcindezi okuthembekile.
2.4 Ukumelana nezinga lokushisa
Ukumelana nezinga lokushisa kuyinkomba eyinhloko yokusebenza kwe-valve. Ama-HPBV angasebenza emazingeni okushisa aphezulu, ngokuvamile afika ku-500°F (260°C) noma ngaphezulu. Amandla okusebenza emazingeni okushisa aphezulu athuthukisa ukuguquguquka kwawo. Leli khono libenza bafanelekele izinhlelo ze-steam, ukukhiqizwa kukagesi, nokucutshungulwa kwamakhemikhali.
3. Umehluko kuma-valve ovemvane ajwayelekile
Umehluko phakathi kwamavalve ovemvane asebenza kahle kakhulu namavalve uvemvane agxilile.
3.1. Ukuklama kwesakhiwo
Amavalvu ovemvane asebenza kahle kakhulu: ngokuvamile isakhiwo esine-eccentric ephindwe kabili, ukuthintana phakathi kwepuleti levalvu nendawo yokuvala kuyancishiswa. Ngakho-ke impahla yokuvala inokuphila isikhathi eside.
Amavalvu ovemvane avamile: isakhiwo esigxile, ipuleti levalvu nendawo yokuvala inokuxhumana okwengeziwe lapho ivula futhi ivala, futhi indawo yokuvala igqoka ngokushesha.
3.2. Izinga lokucindezela
Amavalvu ovemvane asebenza kahle kakhulu: ngokuvamile afaneleka kumasistimu okucindezela okuphakathi nendawo, anamandla okuthwala ingcindezi (afinyelela ku-PN25, PN40 nangaphezulu).
Ama-valve ovemvane avamile: asetshenziswa kakhulu ezinhlelweni zokucindezela okuphansi, ngokuvamile afanele i-PN10, i-PN16 ingcindezi yokusebenza.
3.3. Izinga lokushisa
Ama-valve ovemvane asebenza kahle kakhulu: angasetshenziswa ezimweni zokushisa eziphakeme, futhi angagcina ukusebenza kokuvala emazingeni okushisa aphezulu.
Amavalvu ovemvane avamile: ngokuvamile afanele izinga lokushisa eliphansi noma izimo zokushisa ezivamile, anebanga lokushisa elilinganiselwe.
3.4. Izimo zohlelo lokusebenza
Ama-valve e-butterfly asebenza kakhulu: asetshenziswa kakhulu emikhakheni yezimboni njengamakhemikhali e-petrochemicals, igesi yemvelo, umusi, ukwelashwa kwamanzi, izinga lokushisa eliphezulu nezimo zokucindezela okuphezulu, ezifanele ukulawula uketshezi ngaphansi kwezimo ezinzima.
Amavalvu ovemvane ajwayelekile: ikakhulukazi asetshenziswa ezimeni ezithambile kakhulu njengamasistimu okwelapha amanzi anomfutho ophansi, i-HVAC, nezinqubo ezijwayelekile zezimboni, futhi izimo zokusebenzisa zilula uma kuqhathaniswa.
3.5. Ukukhetha okubalulekile
Amavalvu ovemvane asebenza kahle kakhulu: Umzimba wamavalvu uvamise ukwenziwa ngezinto ezikwazi ukumelana nokugqwala kanye nezinga lokushisa eliphezulu njengensimbi engagqwali, i-wcb, nensimbi eyingxubevange, futhi izigxivizo ngokuvamile ziyizigxivizo zensimbi noma izigxivizo ezithambile ezithuthukisiwe.
Amavalvu ovemvane avamile: Izinto ezisetshenziswayo zomzimba zamavalvu ngokuvamile ziyinsimbi eyinsimbi noma i-ductile iron, futhi izimpawu ngokuvamile ziyizinto ezithambile zokuvala ezifana nerabha ne-polytetrafluoroethylene.
3.6. Inani
Amavalve ovemvane asebenza kahle kakhulu: Ngenxa yokuklama okuyinkimbinkimbi, izinto ezithuthukisiwe, nezinqubo zokukhiqiza ezinhle, izindleko ziphezulu, ngakho intengo ibiza kakhulu.
Ama-valve ovemvane avamile: isakhiwo esilula, izindleko eziphansi, kanye nentengo eyongayo.
4. Ukusetshenziswa kwamavalve evemvane asebenza kahle kakhulu
4.1 Uwoyela negesi
Ezinqubweni zokucwenga ezimayini ezikhuphuka nomfula kanye nezansi nomfula embonini kawoyela negesi, amavalvu ovemvane asebenza kahle adlala indima ebalulekile. Ngoba umfutho ophakeme kanye noketshezi lokushisa okuphezulu kudinga ukulawulwa ngokunembile ukuze kuqinisekiswe ukuphepha nokusebenza kahle. Ikhono elihle kakhulu lokuvala lamavalvu ovemvane asebenza kahle livimbela ukuvuza futhi ligcina ubuqotho benqubo.
4.2 Ukucubungula Amakhemikhali
Amakhemikhali agqwalayo avamile ezimbonini zokucubungula amakhemikhali. Ama-valve ovemvane asebenza kahle anokwakhiwa okuhlala isikhathi eside kanye nekhono elihle lokuvala ukuze ahlangabezane ngokugcwele nezinselele zendawo enjalo.
4.3 Ukukhiqiza Amandla
Izikhungo zokuphehla amandla ziyazuza kumavalvu emvemvane asebenza kahle kakhulu, ikakhulukazi ezinhlelweni zesitimu nokusebenza kwezinjini zomoya. Ukulawula okunembile kwesitimu esishisa kakhulu kubalulekile ukuze kuzuzwe ukusebenza kahle nokusebenza kahle kwamandla.
4.4 Ukuhlanza Amanzi
Izikhungo zokuhlanza amanzi zisebenzisa amavalvu emvemvane asebenza kahle kakhulu ukulawula ukugeleza kwamanzi kanye namanzi angcolile. Lawa ma-valve angakwazi ukusingatha ngempumelelo izingcindezi namazinga okushisa ahlukene. Ikhono lokusebenza ngokwethembeka ngaphansi kwezimo ezinzima liqinisekisa inqubo yokwelapha ephumelelayo.
5. Ukucabangela Ukukhetha
5.1 Izidingo Zokufaka Isicelo
Amavalvu ovemvane asebenza kahle kufanele ahlangabezane nezidingo ezithile zohlelo. Uhlobo lwe-fluid nezici kufanele zihlolwe ngaphambi kokuthenga. Izilinganiso zokucindezela nezinga lokushisa kufanele zifane nezidingo zokusebenza. Ukukhetha i-valve efanele kuqinisekisa ukusebenza kahle nokuphepha.
5.2 Izimo zemvelo
Izimo zemvelo zidlala indima ebalulekile ekukhetheni amavalvu ovemvane. Amazinga okushisa aphezulu kanye nezindawo ezonakalisayo zidinga izinto ezimangelengele. Insimbi engagqwali noma i-PTFE inikeza ukumelana nokugqwala okuhle kakhulu. Ukukhetha okulungile kwandisa impilo yesevisi nokuthembeka.
Ngokufigqiwe
Ama-valve ovemvane asebenza kahle anikeza izinzuzo ezibalulekile ekusebenzeni kwezimboni. Ngokusebenzisa la ma-valve ezinhlelweni zawo, izimboni ziyazuza ekwenyukeni kokusebenza kahle nokuthembeka. Idizayini eqinile iqinisekisa ukusebenza kahle ngaphansi kwezimo ezibucayi, ukuthuthukisa ukuphepha nezinzuzo zezomnotho.
Izinzuzo Eziyinhloko:
• Ukusebenza kahle: Amavalvu asebenza kahle kakhulu anikeza ukwehla kwengcindezi ephansi kakhulu kanye nokufakwa okuhlangene.
• Ukusebenza kahle kwezindleko: Idizayini engasindi inciphisa izindleko zempahla kanye nezidingo zokuyilungisa.
• Izinhlobonhlobo: Ifanele izinga lokushisa eliphezulu kanye nezinhlelo zokusebenza ezinosayizi omkhulu.
Izimboni kufanele zibeke phambili ukukhethwa kwamavalvu ovemvane asebenza kahle kakhulu ukuze kuqinisekiswe ukuzinza nokusebenza kahle kwesikhathi eside.