Iivalvu zebhola kunye neevalvu zesango ziintlobo ezimbini eziqhelekileyo zeevalvu, kwaye zinomahluko omkhulu kwisakhiwo, umgaqo wokusebenza, kunye neemeko zokusetyenziswa. Nantsi indlela yokwahlulahlula:
Okokuqala, umahluko kwisakhiwo
1. Ivalvu yebhola:
- I-Spool: Ibhola enomngxuma phakathi isetyenziswa njenge-valve center, kwaye ibhola iyajikeleza ukulawula ukuvulwa nokuvalwa kwevalve.
- Itywina: Ibhola kunye nesihlalo zenza itywina, ukusebenza kokutywina kulungile, kufanelekile kuxinzelelo oluphezulu, ubushushu obuphezulu kunye nezinye iindawo ezinzima.
- Ukusebenza: Jikelezisa ibhola ngeedigri ezingama-90 ukuze uvuleke kwaye uvale ivalvu, kube lula kwaye kukhawuleze ukusebenza.
2. Ivalvu yesango:
- Umongo wevalvu: Umzimba wevalvu unepleyiti ethe tyaba (iram) ethe nkqo kwicala lokuhamba kwesixhobo, esilawula ukuvulwa nokuvalwa kwevalvu ngokuphakamisa iram.
- Itywina: Kwenziwa itywina phakathi kwesango nesihlalo, kodwa ukusebenza kwevalvu yesango kuchaphazeleka kakhulu kukuchaneka kokucubungula kwesango nesihlalo.
Ukusebenza: Ukuvulwa nokuvalwa kwevalvu yesango kufuna ukuba isango linyuke lize lihle ngendlela elihamba ngayo ijelo, kwaye ukusebenza kucotha kwaye kunzima.
Okwesibini, umgaqo wokusebenza
1. Ivalvu yebhola:
- Inxalenye yokuvula nokuvala (ibhola) iqhutywa yi-valve stem kwaye ijikeleza i-axis ye-ball valve, kwaye ukuvulwa nokuvalwa kwe-valve kunokufezekiswa ngokujikeleza ii-degrees ezingama-90.
Kwimeko yokuvalwa, ivalvu yebhola yenza uphawu lwentsimbi-ukuya kwisinyithi phakathi kwebhola kunye nesihlalo, kwaye ukusebenza kokuvala kuthembekile.
2. Ivalvu yesango:
- Isango lihamba linyuka lize lihle ngendlela eya kwicala lokuhamba kwesixhobo. Ivalvu iyavuleka xa isango liphakama lize livale xa isango liwa.
- Xa ivalvu yesango ivaliwe, kwenziwa isitywino phakathi kwepleyiti yesango kunye nesihlalo, kodwa ukusebenza kwesitywino kuchaphazeleka kakhulu kukuchaneka kokucubungula kwepleyiti yesango kunye nesihlalo.
Okwesithathu, sebenzisa imeko
1. Ivalvu yebhola:
- Isetyenziswa kakhulu kwi-petroleum, kwiikhemikhali, ekuveliseni umbane, ekwenzeni amaphepha, kumandla enyukliya, kwiinqwelomoya, kwiirokethi nakwamanye amacandelo kunye nobomi bemihla ngemihla boluntu.
- Ilungele ngokukodwa ukuvulwa nokuvalwa ngokukhawuleza, iimfuno eziphezulu zokusebenza kokutywina, uxinzelelo oluphakathi luninzi lweemeko.
2. Ivalvu yesango:
- Isetyenziswa kakhulu ukunqanda ukuhamba kwemidiya, kwaye ixhaphake kakhulu kwiivalvu zokulawula eziphambili zemibhobho yokufudumeza kunye nemibhobho yokuhambisa amanzi kunye neyokukhupha amanzi.
- Ivalvu yesango inokumelana okuncinci kunye nokuvala okuqinileyo, kodwa isantya sokuvula nokuvala sicotha, kwaye ayifanelekanga kwiimeko apho kufuneka ukuvulwa nokuvalwa rhoqo.
Okwesine, ezinye izinto ezahlukileyo
1. Ukusebenza kohlengahlengiso:
Ukusebenza kohlengahlengiso lwevalvu yebhola kuphantsi kakhulu, ikakhulu kusetyenziswa ukusika okanye ukudibanisa i-medium kwipayipi.
- Nangona ivalvu yesango inomsebenzi othile wokulungisa, isengozini yokukhukuliseka kwemidiya kunye nokungcangcazela xa ivuliwe kancinci, nto leyo ebangela umonakalo kumphezulu wokuvala.
2. Ubunzima bokugcinwa:
- Ulwakhiwo lwevalvu yebhola lulula, lusebenza ngokuthembekileyo, kwaye kulula ngakumbi ukugcinwa.
- Ulwakhiwo lwevalvu yesango luyinkimbinkimbi, kwaye umngxuma wesihlalo kulula ukuwufaka izinto eziqinileyo, nto leyo enzima ukuyigcina.
Ngamafutshane, kukho umahluko ocacileyo phakathi kweevalvu zebhola kunye neevalvu zesango ngokwesakhiwo, umgaqo wokusebenza kunye nemeko yokusetyenziswa. Xa ukhetha ivalvu, uhlobo lwevalvu olufanelekileyo kufuneka lukhethwe ngokweemeko ezithile zokusebenza kunye neemfuno eziphakathi.
Ixesha lokuthumela: Septemba-19-2024