A ivalvusisisetjenziswa sokulawula umzila we-fluid. Umsebenzi wayo omkhulu kukuhlanganisa nofana ukuvala ukujikeleza kwendandatho yepayipi, ukutjhugulula indlela yokugeleza kwe-medium, ukulungisa umfutho nokugeleza kwe-medium, nokuvikela ukusebenza okujayelekileko kwepayipi nemitjhini.
一．Ukuhlukaniswa kwamavalvu
Ngokuya ngokusetjenziswa nomsebenzi kungahlukaniswa kube:
1. Ivalvu yokuvala: sika nofana uxhumanise umtjhini wepayipi. Njengokuthi: ivalvu yesango, ivalvu ye-globe, ivalvu yebholo, ivalvu ye-butterfly, ivalvu ye-diaphragm, ivalvu yeplagi.
2. Hlola ivalvu: ukuvimbela umphakathi osephayiphini bona ungagelezi emuva.
3. Ivalvu yokusabalalisa: tjhugulula indlela yokugeleza kwe-medium, sabalalisa, uhlukanise nofana uhlanganise i-medium. Njengamavalvu wokusabalalisa, iinthiyo zomtjhiso, kanye namavalvu webholo weendlela ezintathu.
4. Ivalvu yokulawula: lungisa umfutho nokugeleza kwendawo. Njengevalvu yokwehlisa umfutho, ivalvu yokulawula, ivalvu ye-throttle.
5. Ivalvu yokuphepha: vikela umfutho ophakathi esisetjenzisweni bona ungadluli inani elitjhiwoko, begodu unikele ngokuvikeleka kokugandeleleka okukhulu.
二. Imingcele eyisisekelo yeivalvu
1. Ububanzi bevalvu (DN).
2. Umfutho wevalvu (PN).
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4. Ukutjhugululwa kweyunithi yomfutho wevalvu:
| ITLASI | 150 | 300 | 400 | 600 | 800 | 900 | 1500 | 2500 |
| MPa | 1.62.0 | 2.54.05.0 | 6.3 | 10 | 13 | 15 | 25 | 42 |
5. Indlela esebenzako ye-ivalvu:
Amavalvu webubulo asetjenziswa emabubulweni wephethroliyamu, amakhemikhali, we-metallurgy, amandla kagesi, amandla wenyutliya namanye amabubulo. Iindaba ezidluliselwako zifaka hlangana amagesi (umoya, umtjhiso, i-ammonia, igesi yamalahle, igesi yephethroliyamu, igesi yemvelo, njll.); amanzi (amanzi, i-ammonia emanzini, amafutha, ama-esidi, ama-alkali, njll.). Ezinye zazo ziyabola njengezibhamu zomtjhini, kuthi ezinye zine-radioactive enengi.
Isikhathi sokuposa: Jul-28-2023
