Yini ivalve yeluvivane?

Iivalvu yevivaneyasungulwa eMelika ngabo-1930. Yetfulwa eJapan ngemnyaka wa 1950 futsi ayizange isetjentiswe kakhulu eJapan kwaze kwaba ngemnyaka wa 1960. Akuzange kuthandwa eveni lami kwaze kwaba 1970s. Timphawu letiyinhloko temavalvu e-butterfly nguleti: i-torque lencane yekusebenta, indzawo lencane yekufaka kanye nesisindvo lesilula. Kutsatsa DN1000 njengesibonelo, i .ivalvu yevivanekungaba ngu-2T, kantsi i- .Ivalvu yesangokungaba ngu 3.5T. Iivalvu yevivanekulula kuhlanganisa netintfo letehlukahlukene tekushayela futsi unekucina lokuhle kanye nekwetsembeka. Lokungakalungi kwemavalvu e-butterfly lavalwe ngerabha kutsi uma asetjentiselwa kucindzetela, ku-cavitation kutawenteka ngenca yekungasetjentiswa kahle, kwenta kutsi situlo se-rabha sikhukhuleke bese silimala. Ngakho-ke, indlela kahle ukukhetsa incike etimeni tekusebenta. Budlelwane emkhatsini wekuvulwa kwevalve yebutterfly kanye nelizinga lekugeleza ngalokuyinhloko linear. Uma isetjentiselwa kulawula lizinga lekugeleta, timphawu tayo tekugeleta nato tihlobene kakhulu nekumelana nekugeleta kwemaphayiphi. Sibonelo, uma i-caliber yevalve kanye nesimo semaphayiphi lamabili konkhe kuyafana, kepha i-coefficient yekulahlekelwa kwemaphayiphi yehlukile, lizinga lekugeleta kwevalve nalo litawuhluka kakhulu. Uma ivalve isesimeni se-amplitude lenkhulu yekucindzetela, i-cavitation ivame kwenteka ngemuva kwepuleti levalve, lokungalimata ivalve. Ivame kusetjentiswa ngaphandle kwa 15°. Ngesikhatsi i .ivalvu yevivaneisekuvuleni lokusemkhatsini, kwakheka kwekuvula lokwakhiwa ngumtimba we valve kanye nekuphela kwangaphambilini kwelipuleti le butterfly kugcila eshaftini ye valve, futsi imibuso leyehlukene yakhiwa kutotimbili tinhlangotsi. Siphelo sangembili sepuleti levivane ngakulolunye luhlangotsi sihamba ngendlela yekugeleta kwemanti, bese lolunye luhlangotsi luhamba ngendlela yekugeleta kwemanti. Ngako-ke, umtimba wevalve kanye nepuleti levalve ngakulolunye luhlangotsi kwakha kuvuleka lokumise kwemlomo, bese lolunye luhlangotsi lufana nekuvuleka lokumise kwembobo ye-throttle. Luhlangotsi lwe nozzle lunelizinga lekugeleta lelisheshako kakhulu kuneluhlangotsi lwe throttle, futsi kucindzeteleka lokubi kutawukhicitwa ngaphansi kwe valve eluhlangotsini lwe throttle, futsi sivalo se rubber sitawuvama kuwa. I torque yekusebenta yeivalvu yevivaneihlukahluka ngenca yekuvuleka lokuhlukene kanye neticondziso tekuvula nekuvala kwevalve. Le torque lekhicitwa ngumehluko emkhatsini wetinhloko temanti letingetulu naletingephansi te valve ye butterfly levundlile, ikakhulu le valve lenebubanti lobukhulu, ngenca yekujula kwemanti, angeke inganakwa. Ngetulu kwaloko, uma ingcosa ifakwa eceleni kwekungena kwevalve, kwakheka kugeleta lokuchemile, futsi i-torque itawukhula. Uma ivalve isekuvuleni lokusemkhatsini, indlela yekusebenta idzinga kutikhiya ngenca yesento se-torque yekugeleta kwemanti.

I-China inemaketanga lamanyenti embonini yevalve, kepha akusiyo emandla evalve. Kukhuluma ngalokwetayelekile, live lami lingene esigabeni semandla evalve emhlabeni, kepha ngekwelizinga lemkhicito, live lami lisesekudze kakhulu nekuba ngumandla evalve. Lemboni isenekukhicita lokuphansi, emakhono laphansi e-R&D emavalvu lahambisana nemikhicito lesetulu, kanye nelizinga leliphansi lebuchwepheshe bekukhicita embonini yemavalvu, futsi kushoda kwekuhwebelana ngekungenisa nekutfumela ngaphandle kuyachubeka nekwandzisa. Nakanjani akukho tinkampani letinyenti kangaka tevalve letingasindza mbamba emakethe. Kepha, loku kwetfuka lokunesivinini lesikhulu embonini yemavalvu kutawuletsa ematfuba lamakhulu, futsi umphumela wekwetfuka utawenta kusebenta kwemakethe kube nengcondvo kakhulu. Umgwaco loya ekubekeni emavalvu lasetulu “uyintfo lembi kakhulu”. Tincenye letisisekelo setibe kushoda lokuvimbela kutfutfukiswa kwemboni yekukhicita yelive lami kutsi ibe sezingeni lelisetulu. Ngesikhatsi seLuhlelo Lweminyaka Lesihlanu Lwe-12, hulumende utawuchubeka nekukhulisa kwenta tincenye temishini lesetulu tibe sendzaweni. Lapha sikhetsa intfutfuko lebalulekile leminyenti ku “Luhlelo Lwekucala Kwekusebenta” kanye netimboni temavalvu letimele kuhlatiya kungenteka yini kwekufaka esikhundleni setintfo letibuya kulamanye emave. Kusukela ekuhlaziyweni, kungabonakala kutsi kungenteka kwekungeniswa kwemavalvu esikhundleni sawo etimbonini letincane letehlukahlukene kuyahluka kakhulu, futsi emavalvu lasesigabeni lesiphakeme adzinga ngekushesha sicondziso senchubomgomo lenyenti kanye nekwesekelwa kwelucwaningo lwesayensi.

Imboni yevalve idlala indzima lebaluleke kakhulu njengesixhumanisi lesibalulekile embonini yekukhicita imishini ekutfutfukiseni umnotfo wavelonkhe. Njengobe lizinga lemboni yekukhicita emavalvu asekhaya eveni lami lisebanga lelitsite kusuka esigabeni lesiphakeme semhlaba wonkhe, tintfo letinyenti letibalulekile .emavalvungema parameters laphakeme, kushisa lokusetulu kanye nekucindzeteleka lokusetulu, kanye nelizinga leliphakeme le pound bekusolo kutsembele ekungenisweni. Sibonelo, umkhicito we-OMAL waseYurophu bewusolo uyintfo leyinhloko yekukhetsa imboni yekusebentisa emavalvu asekhaya. Kute kukhutsatwe kusetjentiswa kwemavalvu endzaweni, ngemuva kwekutsi Umkhandlu Wembuso ukhiphe “Imibono Leminyenti Ngekusheshisa Kuvuselela Imboni Yekukhicita Tintfo Tekusebenta”, ematiko embuso lafanele ente luchungechunge lwekubeka tintfo letinkhulu ngekuhambisana netidzingo tembuso tekubeka tintfo letinkhulu endzaweni. Eholwa yiKhomishini Yavelonkhe Yekutfutfukisa Nekugucula, Inhlangano Yemboni Yemishini YaseChina kanye neNhlangano Yemboni Yemishini Jikelele YaseChina babeke futsi bakha i-ivalvulocalization luhlelo lwemishini lemikhulu emikhakheni lehlobene, futsi bahlanganise nematiko lafanele tikhatsi letinyenti. Manje localization emavalvu kwakha kuvumelana embonini valve yasekhaya. Kwemukela ngenkhutsalo emazinga emhlaba wonkhe ekwakhiweni kwemikhicito; kutsatsa takhiwo tekuklama letinhle kakhulu tangephandle (kufaka ekhatsi tebuchwepheshe lobunelungelo lobunikati); kuhlolwa kwemkhicito kanye nekuhlolwa kwekusebenta kwentiwa ngalokucinile ngekuhambisana nemazinga emhlaba wonkhe; kutsatsa lwati lwenchubo yekukhicita yangaphandle kanye nekunamatsela kubaluleka elucwaningweni nasekukhutsateni tintfo letinsha; kucacisa emapharamitha ebuchwepheshe kanye netimo tekusebenta temikhicito yevalve lesetulu lepharamitha lengeniswako, njll tindlela tekusheshisa inchubo yekubeka tintfo endzaweni, kukhutsata kuvuselelwa lokuchubekako kwemikhicito yemavalvu, kanye nekucaphela ngalokugcwele kwenta emavalvu endzaweni. Ngekusheshisa sivinini sekuhlela kabusha embonini yemavalvu, imboni yesikhatsi lesitako itawuba ngumncintiswano emkhatsini welizinga lemkhicito wemavalvu kanye nekuphepha kanye netinhlobo temkhicito. Imikhicito itawutfutfuka ngendlela yebuchwepheshe lobuphakeme, emapharamitha laphakeme, kumela lokucinile kwekugcola, kanye nemphilo lendze. Kuphela ngekuchubeka nekusungulwa kwetebucwepheshe, kutfutfukiswa kwemikhicito lemisha, kanye nekuguculwa kwetebucwepheshe kungaba ncono kancane kancane lizinga lebuchwepheshe bemkhicito kuhlangabetana nekuhambisana kwetintfo tasekhaya kanye nekucaphela ngalokugcwele localization emavalvu. Ngaphansi kwesimo sekufuna lokukhulu, imboni yekukhicita emavalvu eveni lami nakanjani itawukhombisa ematfuba lancono ekutfutfuka.