1 Amanqaku aphambili okukhetha ivalvu

1.1 Cacisa injongo yesivalo kwisixhobo okanye isixhobo

Ukumisela iimeko zokusebenza zevalve: ubunjani bendawo esebenzayo, uxinzelelo lokusebenza, ukushisa okusebenzayo kunye neendlela zokulawula ukusebenza, njl.;

1.2 Ukhetho oluchanekileyo lohlobo lwevalvu

Imfuneko yokukhethwa ngokuchanekileyo kohlobo lwevalve kukuba umyili uyayiqonda ngokupheleleyo yonke inkqubo yokuvelisa kunye neemeko zokusebenza. Xa abaqulunqi bekhetha iindidi zevalvu, kufuneka baqale baqonde iimpawu zesakhiwo kunye nokusebenza kwevalve nganye;

1.3 Misela indlela yokuphelisa ivalvu

Phakathi kwemidibaniso edityanisiweyo, imidibaniso yeflange, kunye noqhagamshelo oludityanisiweyo lwesiphelo, ezimbini zokuqala zezona zisetyenziswa kakhulu.Iivalvu ezinemisontoubukhulu becala ziivalvu ezinobubanzi obungaphantsi kwe-50mm. Ukuba ububanzi bukhulu kakhulu, kuya kuba nzima kakhulu ukufaka kunye nokutywina uxhumano. Iivalve zokudibanisa i-Flange kulula ukuzifaka kunye nokuqhaqha, kodwa zikhulu kwaye zibiza kakhulu kuneevalve ezinemisonto, ngoko ke zilungele ukudityaniswa kwemibhobho yeedamitha ezahlukeneyo zemibhobho kunye noxinzelelo. Uxhumo oludityanisiweyo lufanelekile kwiimeko zomthwalo onzima kwaye zithembeke ngakumbi kunokudibanisa kwe-flange. Nangona kunjalo, kunzima ukudibanisa kunye nokubuyisela kwakhona ii-valve ezidibeneyo, ngoko ke ukusetyenziswa kwazo kunqunyelwe kwiimeko apho ngokuqhelekileyo banokusebenza ngokuthembekileyo ixesha elide, okanye apho iimeko zokusebenza zinzima kwaye izinga lokushisa liphezulu;

1.4 Ukukhethwa kwezixhobo zevalvu

Xa ukhetha izixhobo zezindlu zevalve, iindawo zangaphakathi kunye nokutywinwa kwendawo, ngaphezu kokuqwalasela iimpawu ezibonakalayo (ubushushu, uxinzelelo) kunye neempawu zeekhemikhali (ukonakala) kwendawo yokusebenza, ukucoceka kwendawo ephakathi (ubukho okanye ukungabikho kwamasuntswana aqinileyo. ) kufuneka kwakhona kuthathelwe ingqalelo. Ukongeza, kufuneka ubhekisele kwimimiselo efanelekileyo yelizwe kunye nesebe labasebenzisi. Ukukhethwa okuchanekileyo kunye nokufanelekileyo kwezixhobo ze-valve kunokuqinisekisa ubomi benkonzo yezoqoqosho kakhulu kunye nokusebenza kakuhle kwevalve. Ulandelelwano lokukhetha izinto eziphathekayo zevalve yile: intsimbi yentsimbi-yekhabhoni yentsimbi, kunye neseyingi yokutywina ngokulandelelana kwezinto ezikhethiweyo: irabha-yobhedu-alloy steel-F4;

1.5 Abanye

Ukongeza, izinga lokuhamba kunye nenqanaba loxinzelelo lwe-fluid ehamba ngevalve kufuneka limiselwe kwaye ivalve efanelekileyo ikhethwe kusetyenziswa ulwazi olukhoyo (njengeekhathalogu zeemveliso zevalve, iisampuli zemveliso yevalve, njl. njl.).

2 Intshayelelo kwiivalvu ezisetyenziswa ngokuqhelekileyo

Kukho iintlobo ezininzi zeevalvu, ezibandakanya i-valve yesango, i-valve yeglobhu, i-throttle valves, i-valve ye-butterfly, i-valve yeplagi, i-valve yebhola, i-valve yombane, i-diaphragm valves, i-check valves, i-valve yokhuseleko, i-valve yokunciphisa uxinzelelo, i-traps kunye ne-value yokuvala ngokukhawuleza, Phakathi kwazo ezisetyenziswa ngokuqhelekileyo Kukho iivalvu zesango, iivalve zeglowubhu, iivalve ze-throttle, iivalve zeplagi, iivalve zebhabhathane, iivalve zebhola, iivalve zetshekhi, i-diaphragm valves, njl.

2.1Ivalve yesango

Ivalve yesango ibhekisa kwisivalo esinomzimba wokuvula nokuvala (ipleyiti yevalvu) oqhutywa sisikhondo sevalvu kwaye ihla inyuka igudle umphezulu wokutywina wesitulo sevalvu ukuze udibanise okanye unqumle umjelo wolwelo. Xa kuthelekiswa neevalve zokumisa, iivalve zesango zinentsebenzo engcono yokutywina, ukuchasana kwamanzi amancinci, umzamo omncinci wokuvula nokuvala, kunye nokusebenza kohlengahlengiso oluthile. Ziyezinye zezona zisetyenziswa ngokuqhelekileyo iivalvu zokumisa. Ukungalungi kukuba kukhulu ngobukhulu kwaye kuyinkimbinkimbi kwisakhiwo kune-valve yokumisa. Umphezulu wokutywina kulula ukunxiba kwaye kunzima ukuwugcina, ngoko ke ngokuqhelekileyo awufanelekanga ukubetha. Ngokwendawo yomsonto kwisiqu sevalve yevalve yesango, yahlulwe yangamacandelo amabini: uhlobo lwesiqu esivulekileyo kunye nohlobo lwesikhondo esifihliweyo. Ngokweempawu zesakhiwo sesango, inokwahlulwa ibe ziindidi ezimbini: uhlobo lwe-wedge kunye nohlobo oluhambelanayo.

2.2Ivalve yokumisa

Ivalve yeglowubhu yivalve evala ijonge ezantsi. Iindawo zokuvula kunye nokuvala (iidiski zevalve) ziqhutywa sisikhondo sevalve ukuya phezulu nasezantsi kunye ne-axis yesitulo sevalve (umphezulu wokutywina). Xa kuthelekiswa neevalvu zesango, zinolawulo olululo, ukusebenza kakubi kokutywinwa, ulwakhiwo olulula, ukwenziwa nokugcinwa kwezinto ezifanelekileyo, ukuxhathisa ulwelo olukhulu, kunye nexabiso eliphantsi. Yivalve yokumisa esetyenziswa ngokuqhelekileyo, esetyenziswa ngokubanzi kwimibhobho ephakathi kunye nencinci yobukhulu.

2.3 Ivalve yebhola

Indawo yokuvula neyokuvala yevalve yebhola yibhola enesetyhula ngomngxuma. Ibhola ijikeleza ngesikhondo sevalve ukuvula nokuvala ivalve. I-valve yebhola inesakhiwo esilula, ukuvulwa ngokukhawuleza kunye nokuvala, ukusebenza okulula, ubungakanani obuncinci, ubunzima bokukhanya, iindawo ezimbalwa, ukuchasana kwamanzi amancinci, ukutywinwa kakuhle kunye nokugcinwa lula.