Umehluko phakathi kwevalve uvemvane uphawu oluthambile kanye valve uvemvane uphawu oluqinile

I-valve ye-butterfly eqinile

Ukuvalwa okunzima kwe-valve uvemvane kubhekisela ekutheni izinhlangothi zombili zepheya yokuvala zenziwe ngezinto zensimbi noma ezinye izinto eziqinile. Ukusebenza kokufakwa uphawu kwalolu hlobo lwesigxivizo kubi, kodwa kunokumelana nokushisa okuphezulu, ukumelana nokugqoka kanye nokusebenza okuhle kwemishini. Isibonelo: insimbi+yensimbi; Insimbi+ yethusi; Insimbi+graphite; Insimbi + ingxubevange yensimbi. Insimbi lapha ingase futhi kube insimbi ecijile, insimbi ekhonjiwe, insimbi yengxubevange noma ingxubevange yokubeka phezulu nokufafaza.

Ivalve uvemvane uphawu oluthambile

Uphawu oluthambile lwevalve uvemvaneisho ukuthi uhlangothi olulodwa lwepheya lokuvala lenziwe ngezinto zensimbi, kanti olunye lwenziwe ngezinto ezinwebekayo ezingezona ezensimbi. Ukusebenza kokufakwa uphawu kwalolu hlobo lwesigxivizo kuhle, kodwa akumelani nezinga lokushisa eliphezulu, kulula ukukugqoka, futhi kunokusebenza okungekuhle kwemishini, njengalokhu: insimbi + irabha; Insimbi+PTFE, njll.

Isihlalo se-soft seal senziwe ngezinto ezingezona ezensimbi ezinamandla athile, ukuqina nokumelana nokushisa. Ngokusebenza kahle, ingafinyelela ukuvuza okungu-zero, kodwa impilo yayo yesevisi nokuvumelana nezimo kumazinga okushisa akubi kakhulu. Isigxivizo esiqinile senziwe ngensimbi, futhi ukusebenza kokuvala kubi kakhulu. Nakuba abanye abakhiqizi bethi ukuvuza kwe-zero kungafinyelelwa. Isigxivizo esithambile asikwazi ukuhlangabezana nezidingo zenqubo kwezinye izinto ezonakalisayo. I-hard seal ingaxazulula inkinga, futhi lezi zimpawu ezimbili zingaphelelisana. Mayelana nokusebenza kokubekwa uphawu, ukubeka uphawu okuthambile kuhle uma kuqhathaniswa, kodwa manje ukusebenza kokubekwa uphawu kanzima nakho kungahlangabezana nezidingo ezihambisanayo. Izinzuzo ze-soft seal ukusebenza kahle kokuvala, kuyilapho okubi kuwukuguga kalula, ukuguga nokuphila okufushane kwenkonzo. I-Hard seal inempilo ende yesevisi, kodwa ukusebenza kwayo kokubeka uphawu kubi kakhulu kunaleyo yophawu oluthambile.

Umehluko wesakhiwo ikakhulukazi umi kanje:

1. Ukwehluka kwesakhiwo

Ama-valve ovemvane ophawu oluthambilengokuvamile awohlobo lomugqa ophakathi nendawo, kuyilapho amavalvu evemvane eqinile ngokuvamile awohlobo olulodwa lwe-eccentric, i-double eccentric kanye nohlobo lwe-eccentric kathathu.

2. Ukumelana nezinga lokushisa

I-Soft seal isetshenziswa endaweni yokushisa evamile. Uphawu oluqinile lungasetshenziswa ekushiseni okuphansi, izinga lokushisa elivamile, izinga lokushisa eliphezulu nezinye izindawo.

3. Ingcindezi

I-Soft seal low pressure - ingcindezi evamile, uphawu oluqinile lungasetshenziswa nasezimeni zokusebenza ezifana nokucindezela okuphakathi nendawo nophezulu.

4. Ukusebenza kokubeka uphawu

Ukusebenza kokuvalwa kwe-valve uvemvane evalekayo ethambile kanye nevalve uvemvane eqinile eqinile engu-tri eccentric kungcono. Ivalve yevemvane engu-tri eccentric ingagcina ivaleke kahle ngaphansi kwengcindezi ephezulu kanye nendawo yokushisa ephezulu.

Ngokubuka izici ezingenhla, iivalve uvemvane evala uphawuilungele ukuvulwa nokuvala ngezindlela ezimbili kanye nokulungiswa kwamapayipi komoya kanye nokususa uthuli, ukuhlanzwa kwamanzi, imboni yokukhanya, i-petroleum, imboni yamakhemikhali nezinye izimboni. Ivalve yevemvane evalekayo eqinile isetshenziselwa kakhulu ukushisa, ukuhlinzekwa kwegesi, igesi, uwoyela, i-asidi kanye nemvelo ye-alkali.

Ngokusetshenziswa okubanzi kwe-valve ye-butterfly, izici zayo zokufakwa okulula, ukugcinwa okulula kanye nesakhiwo esilula ziba sobala nakakhulu.Amavalvu evemvane athambile kagesi, amavalvu ovemvane ophawu oluthambile lomoya, amavalve uvemvane ophawu oluqinile, njll. aseqala ukushintsha amavalvu esango likagesi, amavalvu embulunga, njll. ezikhathini eziningi.