I-valve iyithuluzi lokulawula lepayipi eliwuketshezi. Umsebenzi wayo oyisisekelo ukuxhuma noma ukunqamula ukujikeleza kwepayipi, ukushintsha indlela yokugeleza kwepayipi, ukulungisa ingcindezi nokugeleza kwepayipi, kanyesetha amavalvu ahlukahlukene, amakhulu namancane, ohlelweni. Isiqinisekiso esibalulekile sokusebenza okuvamile kwepayipi kanyeimishini.
Kunezinhlobo eziningana ezivamile zama-valve okwelapha amanzi:
1. Ivalvu Yesango.
Yivalvu yokuvula nokuvala esetshenziswa kakhulu, esebenzisa isango (ingxenye yokuvula nokuvala, kuvalvu yesango, ingxenye yokuvula nokuvala ibizwa ngokuthi isango, kanti isihlalo sevalvu sibizwa ngokuthi isihlalo sesango) ukuxhuma (ukuvula ngokugcwele) Nokunquma (ukuvala ngokugcwele) ingaphakathi lepayipi. Akuvunyelwe ukusetshenziswa njenge-throttling, futhi isango kufanele ligwenywe ukuvulwa kancane ngesikhathi sokusetshenziswa, ngoba ukuguguleka kwengaphakathi eligeleza ngesivinini esikhulu kuzosheshisa umonakalo wobuso bokuvala. Isango lihamba phezulu naphansi endaweni eqondile enkabeni yesiteshi sesihlalo sesango, futhi lisika ingaphakathi lepayipi njengesango, ngakho-ke libizwa ngokuthi ivalvu yesango.
Izici:
1.Ukumelana nokugeleza okuncane. Isiteshi esiphakathi ngaphakathi komzimba wevalvu siqondile, esiphakathi sigeleza emgqeni oqondile, kanti ukumelana nokugeleza kuncane.
2.Akunciphisi kakhulu umsebenzi lapho kuvulwa futhi kuvalwa. Kuhlobene nevalvu ehambisanayo, ngoba ivuliwe noma ivaliwe, indlela yokuhamba kwesango iqonde ngqo endleleni yokugeleza kwe-medium.
3.Ukuphakama okukhulu kanye nesikhathi eside sokuvula nokuvala. Ukushaya kokuvula nokuvala kwesango kuyanda, futhi ukunciphisa isivinini kwenziwa ngesikulufu.
4. Isenzakalo sesando samanzi akulula ukwenzeka. Isizathu ukuthi isikhathi sokuvala side kakhulu.
5. I-medium ingageleza kunoma iyiphi indlela yepompo, futhi ukufakwa kwayo kulula. Ipompo yamanzi yesiteshi se-valve yesango iphakeme kakhulu.
6. Ubude besakhiwo (ibanga eliphakathi kobuso obubili bokuxhumanisa begobolondo) lincane.
7. Indawo yokuvala kulula ukuyigqoka. Uma ukuvulwa nokuvalwa kuthinteka, izindawo zokuvala ezimbili zepuleti lesango kanye nesihlalo sevalvu zizokhuhlana futhi zishelele komunye nomunye. Ngaphansi kwesenzo sokucindezela okuphakathi, kulula ukubangela ukuklwebheka nokuguguleka, okuthinta ukusebenza kokuvala kanye nempilo yonke yenkonzo.
8. Intengo ibiza kakhulu. Uphawu lokuvala oluthintanayo luyinkimbinkimbi kakhulu ukulucubungula, ikakhulukazi indawo yokuvala esihlalweni sesango akulula ukuyicubungula
2. I-Globe Valve
I-globe valve iyi-closed-circuit valve esebenzisa i-disc (ingxenye yokuvala ye-globe valve ibizwa ngokuthi i-disc) ukuze ihambe emgqeni ophakathi wesiteshi se-disc seat (i-valve seat) ukulawula ukuvulwa nokuvalwa kwepayipi. Ama-globe valve ngokuvamile afanelekela ukuthutha uketshezi kanye ne-gaseous media ngaphansi kwezingcindezi ezahlukene kanye namazinga okushisa ngaphakathi kobubanzi obubekiwe obujwayelekile, kodwa awafanele ukuthutha uketshezi oluqukethe imvula eqinile noma i-crystallization. Epayipini elinomfutho ophansi, i-stop valve ingasetshenziswa futhi ukulungisa ukugeleza kwe-medium epayipini. Ngenxa yemikhawulo yesakhiwo, ububanzi obujwayelekile be-globe valve bungaphansi kuka-250mm. Uma isepayipini elinomfutho ophakathi ophezulu kanye nesivinini sokugeleza okuphezulu, ubuso bayo bokuvala buzoguga ngokushesha. Ngakho-ke, lapho izinga lokugeleza lidinga ukulungiswa, i-throttle valve kumele isetshenziswe.
Izici:
1.Ukuguguleka nokuklwebheka kwendawo yokuvala akukubi kangako, ngakho-ke umsebenzi uthembeke kakhulu futhi isikhathi senkonzo side.
2. Indawo yobuso bokuvala incane, isakhiwo silula, futhi amahora okusebenza komuntu adingekayo ukukhiqiza ubuso bokuvala kanye nezinto eziyigugu ezidingekayo endandatho yokuvala zingaphansi kwalezo zevalvu yesango.
3. Lapho uvula futhi uvala, ukushaywa kwediski kuncane, ngakho ukuphakama kwevalvu yokumisa kuncane. Kulula ukuyisebenzisa.
4. Ukusebenzisa intambo ukuhambisa idiski, ngeke kube nokuvulwa nokuvalwa okungazelelwe, futhi isimo "sesando samanzi" ngeke senzeke kalula.
5. I-torque yokuvula nokuvala inkulu, kanti ukuvulwa nokuvala kuyakhathaza. Lapho kuvalwa, indlela yokunyakaza kwediski iphambene nendlela yokucindezela kokunyakaza okuphakathi, futhi amandla e-medium kumele anqotshwe, ngakho-ke i-torque yokuvula nokuvala inkulu, okuthinta ukusetshenziswa kwama-globe valve amakhulu.
6. Ukumelana okukhulu kokugeleza. Phakathi kwazo zonke izinhlobo zamavalvu okunqunywa, ukumelana kokugeleza kwevalvu yokunqunywa yikho okukhulu kunakho konke. (Isiteshi esiphakathi sinama-tortuous kakhulu)
7. Isakhiwo siyinkimbinkimbi kakhulu.
8. Indlela ephakathi nendawo yokugeleza iyindlela eyodwa. Kufanele kuqinisekiswe ukuthi indlela ephakathi igeleza isuka phansi iye phezulu, ngakho indlela ephakathi kumele igeleze iqonde ohlangothini olulodwa.
Esihlokweni esilandelayo, sizokhuluma ngama-valve e-butterfly kanye nama-valve okuhlola kuma-valve okwelapha amanzi, asevele ehluleka futhi elungiswa.