A ivalvusisixhobo sokulawula umgca wolwelo. Umsebenzi waso oyintloko kukudibanisa okanye ukunqumla ukujikeleza kweringi yombhobho, ukutshintsha indlela yokuhamba kwesixhobo, ukulungisa uxinzelelo kunye nokuhamba kwesixhobo, kunye nokukhusela ukusebenza okuqhelekileyo kombhobho kunye nezixhobo.
一.Ukwahlulwa kweevalvu
Ngokwendlela yokusetyenziswa kunye nomsebenzi, zingahlulwa zibe:
1. Ivalvu yokuvala: nqumla okanye udibanise i-pipeline medium. Ezifana: ivalvu yesango, ivalvu yeglobe, ivalvu yebhola, ivalvu yebhabhathane, ivalvu yediaphragm, ivalvu yeplagi.
2. Ivalvu yokujonga: thintela i-medium ekwipayipi ukuba ingahambi ngasemva.
3. Ivalvu yokusasaza: tshintsha indlela yokuhamba kwesixhobo, usasaze, wahlukanise okanye udibanise isixhobo. Ezifana neevalvu zokusasaza, imigibe yomphunga, kunye neevalvu zebhola ezineendlela ezintathu.
4. Ivalvu yokulawula: lungisa uxinzelelo kunye nokuhamba kwesixhobo. Ezifana nevalvu yokunciphisa uxinzelelo, ivalvu yokulawula, ivalvu ye-throttle.
5. Ivalvu yokhuseleko: ithintela uxinzelelo oluphakathi kwisixhobo ukuba lungadluli kwixabiso elichaziweyo, kwaye inike ukhuseleko lokhuseleko olugqithisileyo.
二Iiparameter ezisisiseko zeivalvu
1. Ububanzi obuqhelekileyo bevalvu (DN).
2. Uxinzelelo oluqhelekileyo lwevalvu (PN).
3. Uxinzelelo kunye nomlinganiselo wobushushu bevalvu: Xa ubushushu bokusebenza bevalvu budlula ubushushu obuqhelekileyo boxinzelelo oluqhelekileyo, uxinzelelo lwayo oluphezulu lokusebenza kufuneka luncitshiswe ngokufanelekileyo.
4. Ukuguqulwa kweyunithi yoxinzelelo lwevalvu:
| IKLASI | 150 | 300 | 400 | 600 | 800 | 900 | 1500 | 2500 |
| I-MPa | 1.62.0 | 2.54.05.0 | 6.3 | 10 | 13 | 15 | 25 | 42 |
5. Indlela efanelekileyo yokusebenzisaivalvu:
Iivalvu zoshishino zisetyenziswa kwi-petroleum, kwishishini leekhemikhali, kwi-metallurgy, kumbane, kumandla enyukliya nakwamanye amashishini. Izinto ezidlulayo ziquka iigesi (umoya, umphunga, i-ammonia, igesi yamalahle, igesi yepetroliyam, igesi yendalo, njl.njl.); ulwelo (amanzi, i-ammonia engamanzi, ioyile, ii-asidi, ii-alkalis, njl.njl.). Ezinye zazo zirhabaxa njengemipu yoomatshini, kwaye ezinye zinamandla kakhulu okusasazeka kwemitha.
Ixesha leposi: Julayi-28-2023
