Yintoni naivelufa yokulawula uxinzelelo?
Kwinqanaba elisisiseko, i-valve yokulawula uxinzelelo sisixhobo esilungiselelwe ukulawula uxinzelelo oluphezulu okanye olusezantsi ekuphenduleni utshintsho kwinkqubo. Olu tshintsho lunokubandakanya ukuguquguquka kokuhamba, uxinzelelo, ubushushu okanye ezinye izinto ezenzeka ngexesha lokusebenza kwenkqubo yesiqhelo. Injongo yomlawuli woxinzelelo kukugcina uxinzelelo lwenkqubo efunekayo. Okubalulekileyo, abalawuli boxinzelelo bahluke kwiivalve, ezilawula ukuhamba kwenkqubo kwaye azilungelelanisi ngokuzenzekelayo. Iivalvu zokulawula uxinzelelo zilawula uxinzelelo, hayi ukuhamba, kwaye ziyazilawula.

Uhlobo lolawulo loxinzelelo
Zimbini iindidi eziphambili zeevalvu zokulawula uxinzelelo:iivalve zokunciphisa uxinzelelo kunye neevalvu zoxinzelelo lwangasemva.

Iivalvu zokunciphisa uxinzelelo zilawula ukuhamba koxinzelelo kwinkqubo ngokubona uxinzelelo lokuphuma kunye nokulawula uxinzelelo olusezantsi ngokwazo.

Abalawuli boxinzelelo lwangasemva balawula uxinzelelo olusuka kwinkqubo ngokuva uxinzelelo lokungena kunye nokulawula uxinzelelo olusuka phezulu

Ukhetho lwakho olufanelekileyo lokulawula uxinzelelo luxhomekeke kwiimfuno zakho zenkqubo. Ngokomzekelo, ukuba ufuna ukunciphisa uxinzelelo oluvela kumthombo woxinzelelo oluphezulu ngaphambi kokuba inkqubo yemidiya ifikelele kwinkqubo ephambili, i-valve yokunciphisa uxinzelelo inokwenza umsebenzi. Ngokwahlukileyo, i-valve yoxinzelelo lwangasemva inceda ukulawula nokugcina uxinzelelo oluphezulu ngokunciphisa uxinzelelo olugqithisileyo xa iimeko zenkqubo zibangela ukuba uxinzelelo lube phezulu kunokuba luyimfuneko. Xa isetyenziswe kwindawo efanelekileyo, uhlobo ngalunye lunokukunceda ugcine uxinzelelo olufunekayo kuyo yonke inkqubo yakho.

Umgaqo osebenzayo wevalve yokulawula uxinzelelo
Iivalvu zokulawula uxinzelelo ziqulethe izinto ezintathu ezibalulekileyo ezibanceda ukuba balawule uxinzelelo:

Amacandelo okulawula, kuquka isihlalo sevalve kunye nepoppet. Isitulo sevalvu sinceda ukulawula uxinzelelo kwaye sithintele ulwelo ukuba lungavuzi luye kwelinye icala lomlawuli xa luvaliwe. Ngelixa inkqubo ihamba, i-poppet kunye nesihlalo sevalve zisebenza kunye ukugqiba inkqubo yokutywina.

Into yokuva, ngokuqhelekileyo i-diaphragm okanye ipiston. Into yokuva ibangela ukuba i-poppet iphakame okanye iwe kwisitulo sevalve ukulawula uxinzelelo lokungena okanye lokuphuma.

Ilayisha izinto. Ngokuxhomekeke kwisicelo, umlawuli unokuba ngumlawuli we-spring-loaded regulator okanye i-dome-loaded regulator. Isiqalelo sokulayisha sisebenzisa amandla okulinganisa asezantsi kumphezulu wediaphragm.

Ezi zinto zisebenza kunye ukudala ulawulo olufunekayo loxinzelelo. I-piston okanye i-diaphragm iva uxinzelelo oluphezulu (lokungena) kunye noxinzelelo olusezantsi (lokuphuma). Isixhobo sovayo emva koko sizama ukufumana ibhalansi kunye namandla amiselweyo ukusuka kwinto yokulayisha, ehlengahlengiswa ngumsebenzisi ngesiphatho okanye enye indlela yokujika. Isivamvo siya kwenza ukuba ipapa ivule okanye ivale ukusuka kwisitulo sevalve. Ezi zinto zisebenza kunye ukugcina ulungelelwano kunye nokuphumeza uxinzelelo olubekiwe. Ukuba elinye ibutho liyatshintsha, amanye amandla nawo kufuneka atshintshe ukubuyisela ulungelelwaniso.

Kwi-valve yokunciphisa uxinzelelo, imikhosi emine eyahlukeneyo kufuneka ilinganiswe, njengoko kuboniswe kuMzobo 1. Oku kubandakanya amandla okulayisha (F1), i-inlet spring force (F2), i-outlet pressure (F3) kunye noxinzelelo lwe-inlet (F4). Amandla okulayisha ewonke kufuneka alingane nokudityaniswa kwamandla entwasahlobo angenayo, uxinzelelo lokuphuma, kunye noxinzelelo lokungena.

Iivalvu zoxinzelelo lwangasemva zisebenza ngendlela efanayo. Bamele balinganise amandla entwasahlobo (F1), uxinzelelo lwe-inlet (F2) kunye noxinzelelo lwe-outlet (F3) njengoko kuboniswe kuMzobo 2. Apha, amandla entwasahlobo kufuneka alingane nenani loxinzelelo lokungena kunye noxinzelelo lokuphuma.

Ukwenza uKhetho lweRight Pressure Regulator
Ukufakela isilawuli soxinzelelo olufanelekileyo ngundoqo ekugcineni uxinzelelo olufunekayo. Ubungakanani obufanelekileyo ngokuqhelekileyo buxhomekeke kwisantya sokuhamba kwinkqubo - abalawuli abakhulu banokusingatha ukuhamba okuphezulu ngelixa belawula uxinzelelo ngokufanelekileyo, ngelixa kumanqanaba okuhamba okuphantsi, abalawuli abancinci basebenza kakhulu. Kwakhona kubalulekile ubungakanani bamacandelo omlawuli. Ngokomzekelo, kuya kusebenza ngakumbi ukusebenzisa i-diaphragm enkulu okanye ipiston ukulawula izicelo zoxinzelelo oluphantsi. Onke amacandelo kufuneka alinganiswe ngokufanelekileyo ngokweemfuno zesixokelelwano sakho.

Uxinzelelo lwenkqubo
Ekubeni umsebenzi oyintloko wolawulo loxinzelelo kukulawula uxinzelelo lwenkqubo, kubalulekile ukuqinisekisa ukuba umlawuli wakho ulinganisa ubukhulu, ubuncinci, kunye noxinzelelo lwenkqubo yokusebenza. Iimpawu zemveliso yokulawula uxinzelelo zihlala zigxininisa uluhlu lokulawula uxinzelelo, olubaluleke kakhulu ekukhetheni umlawuli woxinzelelo olufanelekileyo.

Ubushushu benkqubo
Iinkqubo zemizi-mveliso zinokuba noluhlu olubanzi lobushushu, kwaye kufuneka uthembe ukuba umlawuli woxinzelelo owukhethileyo uya kumelana neemeko zokusebenza ezilindelekileyo. Imiba yokusingqongileyo yenye yezinto ezifunekayo ukuba ziqwalaselwe, kunye nezinto ezifana nokushisa kwamanzi kunye nomphumo we-Joule-Thomson, obangela ukupholisa ngokukhawuleza ngenxa yokuhla koxinzelelo.

inkqubo ubuntununtunu
Uvakalelo lwenkqubo ludlala indima ebalulekileyo ekunqumeni ukhetho lwendlela yokulawula kubalawuli boxinzelelo. Njengoko kukhankanyiwe ngasentla, abaninzi abalawuli ngabalawuli abalayishwe entwasahlobo okanye abalawuli abalayishwe ngedome. Iivalve zokulawula uxinzelelo lwe-Spring zilawulwa ngumqhubi ngokuguqula isiphatho esijikelezayo sangaphandle esilawula amandla entwasahlobo kwinto yokuva. Ngokwahlukileyo, abalawuli be-dome-loaded basebenzisa uxinzelelo lwe-fluid ngaphakathi kwenkqubo ukubonelela ngoxinzelelo oluseti olusebenza kwinto yokuva. Nangona i-spring-loaded regulators ixhaphake kakhulu kwaye abaqhubi bavame ukuqhelana nabo, abalawuli be-dome-loaded banokunceda ukuphucula ukuchaneka kwizicelo ezifunayo kwaye kunokuba luncedo kwizicelo zokulawula ngokuzenzekelayo.

inkqubo yemidiya
Ukuhambelana kwezinto eziphathekayo phakathi kwazo zonke iinxalenye zomlawuli woxinzelelo kunye nenkqubo yemidiya ibalulekile kubomi obude becandelo kunye nokuphepha ixesha lokuphumla. Nangona izinto zerabha kunye ne-elastomer zisehlelwa kukuwohloka kwendalo, imidiya ethile yenkqubo inokubangela ukuthotywa okukhawulezileyo kunye nokusilela kwevalvu yokulawula kwangaphambi kwexesha.

Iivalve zokulawula uxinzelelo zidlala indima ebalulekileyo kwiinkqubo ezininzi ze-industrial fluid kunye ne-instrumentation, inceda ukugcina okanye ukulawula uxinzelelo olufunekayo kunye nokuhamba ekuphenduleni utshintsho lwenkqubo. Ukukhetha umlawuli woxinzelelo olufanelekileyo kubalulekile ukuba inkqubo yakho ihlale ikhuselekile kwaye isebenze njengoko kulindelekile. Ukhetho olungalunganga lunokubangela ukungasebenzi kakuhle kwenkqubo, ukusebenza kakubi, ukucombulula iingxaki rhoqo, kunye neengozi ezinokubakho zokhuseleko.