I-valve iyithuluzi lokulawula lepayipi eliwuketshezi.Umsebenzi wayo oyisisekelo ukuxhuma noma ukunqamula ukujikeleza kwe-medium pipeline, ukushintsha indlela yokuhamba kwe-medium, ukulungisa ingcindezi nokugeleza kwe-medium, futhisetha ama-valve ahlukahlukene, amakhulu namancane, ohlelweni.Isiqinisekiso esibalulekile sokusebenza okujwayelekile kwepayipi kanyeimishini.
Kunezinhlobo ezimbalwa ezijwayelekile zamavalvu okwelapha amanzi:
1. Ivalvu yesango.
Kuyivalvu evame ukusetshenziswa kakhulu yokuvula nokuvala, esebenzisa isango (ingxenye yokuvula neyokuvala, ku-valve yesango, ingxenye yokuvula nokuvala ibizwa ngokuthi isango, futhi isihlalo se-valve sibizwa ngokuthi isihlalo sesango) ukuxhuma ( vula ngokugcwele) Bese usika (uvale ngokugcwele) isisetshenziswa esisepayipini.Akuvunyelwe ukusetshenziswa njenge-throttling, futhi isango kufanele ligwenywe ukuthi livulwe kancane ngesikhathi sokusetshenziswa, ngoba ukuguguleka kwe-high-speed medium flowing medium kuzosheshisa ukulimala kwendawo yokuvala.Isango lehla linyuka ngendiza eqonde emgqeni ophakathi wesiteshi sesihlalo sesango, futhi linqamula i-medium epayipini njengesango, ngakho-ke ibizwa ngokuthi i-valve yesango.
Izici:
1.Ukumelana nokugeleza okuncane.Isiteshi esiphakathi ngaphakathi komzimba we-valve siqondile, i-medium igeleza ngendlela eqondile, futhi ukumelana nokugeleza kuncane.
2.Ayiwongi kakhulu umsebenzi uma uvula noma uvala.Ihlobene ne-valve ehambisanayo, ngoba ivuliwe noma ivaliwe, isiqondiso sokunyakaza kwesango sibhekene nesiqondiso sokugeleza kwe-medium.
3.Ukuphakama okukhulu nesikhathi eside sokuvula nokuvala.Ukuvula nokuvala ukushaywa kwesango kuyanda, futhi ukunciphisa isivinini kwenziwa nge-screw.
4. Isimo sesando samanzi akulula ukwenzeka.Isizathu ukuthi isikhathi sokuvala side.
5. I-medium ingageleza kunoma iyiphi indlela yepompo, futhi ukufakwa kulula.Iphampu yamanzi yesiteshi se-valve yesango iyingozi kakhulu.
6. Ubude besakhiwo (ibanga phakathi kobuso obubili obuhlangene begobolondo) buncane.
7. Indawo yokubeka uphawu kulula ukuyigqoka.Lapho ukuvuleka nokuvalwa kuthinteka, izindawo ezimbili zokuvala zepuleti lesango kanye nesihlalo sevalvu zizokhuhlana futhi zishelele zibhekane.Ngaphansi kwesenzo sokucindezela okuphakathi, kulula ukubangela ukuhuzuka nokugqoka, okuthinta ukusebenza kokuvala kanye nayo yonke impilo yesevisi.
8. Intengo ibiza kakhulu.Uphawu olungaphezulu lokuvala uphawu lokuxhumana luyinkimbinkimbi kakhulu ukulucubungula, ikakhulukazi indawo yokuvala esihlalweni sesango akulula ukuyicubungula.
2.I-Globe Valve
I-valve ye-globe iyi-valve yesiyingi evaliwe esebenzisa i-disc (ingxenye yokuvala ye-valve yembulunga ibizwa ngokuthi i-disc) ukuhamba emgqeni ophakathi wesiteshi sesihlalo se-disc (isihlalo se-valve) ukulawula ukuvulwa nokuvala iphayiphi.Amavalvu eglobhu ngokuvamile afanele ukuthutha imidiya ewuketshezi negesi ngaphansi kwezingcindezi ezihlukahlukene namazinga okushisa ngaphakathi kwebanga elijwayelekile elishiwo, kodwa awakulungele ukuthutha uketshezi oluqukethe imvula eqinile noma ikristalu.Epayipini lengcindezi ephansi, i-valve yokumisa ingasetshenziswa futhi ukulungisa ukugeleza kwendawo ephakathi epayipini.Ngenxa yemikhawulo yesakhiwo, ububanzi be-valve yembulunga bungaphansi kuka-250mm.Uma isepayipini elinomfutho ophakathi nendawo kanye nesivinini sokugeleza okuphezulu, indawo yayo yokuvala izoguga ngokushesha.Ngakho-ke, lapho izinga lokugeleza lidinga ukulungiswa, i-valve ye-throttle kufanele isetshenziswe.
Izici:
1.Ukuguga nokuhuzuka kwendawo yokuvala akukona okungathi sína, ngakho-ke umsebenzi unokwethenjelwa kakhulu futhi impilo yesevisi yinde.
2. Indawo yendawo yokuvala incane, isakhiwo silula, futhi amahora omuntu adingekayo ukuze kwenziwe indawo yokuvala kanye nezinto eziyigugu ezidingekayo endandatho yokuvala ingaphansi kwaleyo yevalvu yesango.
3. Uma uvula futhi uvala, ukushaywa kwe-disc kuncane, ngakho ukuphakama kwe-valve yokumisa kuncane.Kulula ukusebenza.
4. Ukusebenzisa intambo ukuhambisa i-disc, ngeke kube khona ukuvulwa nokuvala okungazelelwe, futhi ukwenzeka "kwesando samanzi" ngeke kwenzeke kalula.
5. I-torque yokuvula nokuvala inkulu, futhi ukuvula nokuvala kuyakhandla.Lapho uvala, isiqondiso sokunyakaza kwe-disc siphambene nesiqondiso sokucindezela kokunyakaza okuphakathi, futhi amandla omphakathi kufanele anqotshwe, ngakho-ke i-torque yokuvula nokuvala inkulu, ethinta ukusetshenziswa kwama-valve amakhulu embulunga yonke.
6. Ukumelana nokugeleza okukhulu.Phakathi kwazo zonke izinhlobo zama-valve anqanyuliwe, ukumelana nokugeleza kwe-valve yokunqanyulwa yiyona enkulu kunazo zonke.(Isiteshi esimaphakathi sihlukumeza kakhulu)
7. Isakhiwo siyinkimbinkimbi kakhulu.
8. Isiqondiso sokugeleza okuphakathi siyindlela eyodwa.Kufanele kuqinisekiswe ukuthi okuphakathi kugeleza kusuka phansi kuya phezulu, ngakho okuphakathi kufanele kugeleze ngendlela eyodwa.
Esihlokweni esilandelayo, sizokhuluma ngama-butterfly valves futhi sihlole ama-valve kuma-valve okwelapha amanzi, asevele ejwayele ukwehluleka nokugcinwa.