Kukho umahluko omkhulu phakathi kweevalvu ze-SDV (iivalvu zokuvala) kunye neevalvu zokhuseleko ngokwemisebenzi, umgaqo wokusebenza kunye neemeko zokusetyenziswa. Oku kulandelayo luhlalutyo oluneenkcukacha lomahluko phakathi kweevalvu ezimbini:
Okokuqala, umahluko osebenzayo
Ivalvu ye-SDV (ivalvu yokusika):
Umsebenzi oyintloko kukunqumla nokulawula ukuhamba kolwelo. Xa kuvela imeko engxamisekileyo, ivalvu ye-SDV inokukhawuleza inqumle ukuhamba kwemidiya, ithintele ukwanda kweengozi, kwaye iqinisekise ukhuseleko lwabasebenzi nezixhobo.
Ivalvu yokhuseleko:
Umsebenzi oyintloko kukuthintela umonakalo wezixhobo okanye wepayipi ngenxa yoxinzelelo olugqithisileyo. Xa uxinzelelo oluphakathi kwizixhobo okanye kwipayipi ludlula ixabiso elichaziweyo, ivalvu yokhuseleko ivuleka ngokuzenzekelayo, kwaye uxinzelelo luyancitshiswa ngokukhupha ipayipi iye ngaphandle kwenkqubo, ngaloo ndlela kukhuselwa ukhuseleko lwezixhobo kunye nepayipi.
Okwesibini, umahluko kwimigaqo yokusebenza
Ivalvu ye-SDV (ivalvu yokusika):
Umgaqo wokusebenza usekelwe kwii-actuators zomoya. Emva kokufumana isignali yokulawula, i-solenoid valve ilawula ukuvulwa komthombo womoya ocinezelweyo, ngaloo ndlela iqhuba ukuvulwa okanye ukuvalwa kwe-valve. Ii-SDV valves zivuleka ngokupheleleyo kwaye zivalwe ngokupheleleyo, ngoko ke zaziwa ngokuba zii-two-position valves.
Ivalvu yokhuseleko:
Umgaqo wokusebenza usekelwe kumandla esipringi okanye ubunzima. Xa uxinzelelo oluphakathi ludlula ixabiso elichaziweyo, isipringi okanye ubunzima buyacinezelwa okanye bushukunyiswe, ngaloo ndlela kuvulwa ivalvu ukuze kukhululwe uxinzelelo. Xa uxinzelelo luncitshisiwe ukuya kwixabiso elimiselweyo, isipringi okanye ubunzima buyabuya kwaye ivalvu ivaleka ngokuzenzekelayo.
Okwesithathu, umahluko kwiimeko zesicelo
Ivalvu ye-SDV (ivalvu yokusika):
Isetyenziswa kakhulu kwimizi-mveliso yepetroli, amayeza, ukutya, ukwakha iinqanawa kunye neminye imimandla, kunye namaqonga eoyile aselwandle. Ifanelekile ngakumbi kwiimeko apho ukuhamba kweendaba kufuneka kunqunyulwe ngokukhawuleza ukukhusela izixhobo kunye neenkqubo.
Ivalvu yokhuseleko:
Isetyenziswa kakhulu kwiibhoyila, kwiinqanawa zoxinzelelo, kwiinkqubo zemibhobho nakwezinye izixhobo ukuthintela umonakalo wezixhobo kunye neengozi zokhuseleko ezibangelwa luxinzelelo olugqithisileyo. Iivalvu zokhuseleko zikwasetyenziswa rhoqo kwiibhoyila zomphunga, kwiitanki zegesi yepetroliyam enyibilikisiweyo okanye kwiimoto zetanki zesitimela zegesi yepetroliyam enyibilikisiweyo, kwiiWells zokuvelisa, kwizixhobo zokuvelisa umbane zomphunga ezisebenzisa uxinzelelo oluphezulu kunye nakwezinye iimeko.
Okwesine, ezinye izinto ezahlukileyo
Iimpawu zesakhiwo:
Ulwakhiwo lwevalvu ye-SDV (ivalvu yokusika) ilula kakhulu, idla ngokuquka amacandelo amabini e-actuator kunye nomzimba wevalvu. I-actuator ingaba yi-pneumatic, yombane okanye ye-hydraulic, njl.njl., kwaye umzimba wevalvu unokukhethwa ngokweempawu zesixhobo kunye neemfuno zokusetyenziswa.
Ulwakhiwo lwevalvu yokhuseleko luyinkimbinkimbi, ludla ngokubandakanya umzimba, isihlalo, idiski yevalvu, intwasahlobo okanye ubunzima kunye nezinye izinto. Iindidi ezahlukeneyo zesakhiwo sevalvu yokhuseleko (ezifana nohlobo lwentwasahlobo, uhlobo lobunzima be-lever, uhlobo lwe-pulse, njl.njl.) zineempawu ezahlukeneyo kunye nobubanzi bokusetyenziswa.
Iimfuno zokusebenza:
Iimfuno zokusebenza kwevalvu ye-SDV (ivalvu yokusika) ziquka ukusebenza kokutywina, isantya sokuvula nokuvala, ubomi benkonzo njalo njalo. Ekukhetheni, kuyimfuneko ukukhetha ngokweemeko zokusebenza kunye neempawu zemidiya.
Iimfuneko zokusebenza kwevalvu yokhuseleko zingqongqo ngakumbi, ukongeza ekusebenzeni okusisiseko kokutywina kunye nesantya sokuvula nokuvala, kodwa kufuneka kuqwalaselwe umthamo wokukhupha, uxinzelelo lokubuyela, umahluko woxinzelelo lokuvula nokuvala kunye nezinye izalathisi eziphambili. Ezi zalathisi zichaphazela ngokuthe ngqo impembelelo yokhuseleko lwevalvu yokhuseleko kunye nokusebenza ngokukhuselekileyo kwenkqubo.
Ngamafutshane, kukho umahluko omkhulu phakathi kweevalvu ze-SDV (iivalvu ezinqumliweyo) kunye neevalvu zokhuseleko ngokwemisebenzi, umgaqo wokusebenza, iimeko zokusetyenziswa kunye neempawu zesakhiwo. Ukhetho kufuneka luqwalaselwe ngokupheleleyo ngokweemfuno zokwenyani zokusetyenziswa kunye neemeko zokusebenza.
Ixesha leposi: Novemba-11-2024