Ungaqinisekisa kanjani ukubekwa uphawu okuthembekile kokufakwa kwe-high-pressure tube nge-O-ring seal?

O-ring

Zombili izigxivizo ze-SAE flange kanye ne-O-ring end seal zivaliwe ngama-O-rings. Lokhu kufakwa ngokuvamile kusetshenziswa ezinhlelweni ezinengcindezi ephezulu kakhulu futhi nezidingo zokwethenjwa zemishini yemishini nazo ziphezulu kakhulu. Lezi zikhathi zohlelo lokusebenza ngokuvamile ziyi-static pressure seal. Singakuqinisekisa kanjani ukwethembeka kwezimpawu ze-O-ring

Umgomo wokuvala wama-O-rings osetshenziswa ekuvaleni ingcindezi emile

Ngemuva kokuthi i-O-ring ifakwe emgodini wokuvala, isigaba sayo esiphambanweni singaphansi kwengcindezi yokuxhumana, okuholela ekuguqulweni kwe-elastic, futhi ikhiqize ingcindezi yokuqala yokuxhumana P0 endaweni yokuxhumana. Ngisho nangaphandle kwengcindezi ephakathi nendawo noma ngokucindezela okuncane kakhulu, i-O-ring ingafinyelela ukubekwa uphawu ngokuncika ekucindezelweni kwayo okunwebekayo. Lapho i-cavity igcwele i-pressurized medium, ngaphansi kwesenzo sokucindezela okuphakathi, i-O-ring iqhubekela ohlangothini oluphansi lokucindezela, futhi ukunwebeka kwayo kuyanda, ukugcwalisa nokuvala igebe. Ngaphansi kwesenzo sengcindezi ephakathi nendawo, ingcindezi yokuxhumana u-Pp edluliselwe endaweni eyi-O-ring ikhuphula ukusebenza endaweni yokuxhumana yepheya yokuvala ku-Pm.

Ukucindezela kokuqala ngesikhathi sokufakwa kokuqala

Ukucindezela okuphakathi kudluliselwa nge-O-ring.

Ukwakheka kwengcindezi yokuxhumana

Ukuthatha i-face-sealing O-ring tube fitting njengesibonelo, xoxa ngezinto ezithinta ukuvalwa kokufakwa kweshubhu.

Okokuqala, uphawu kufanele lube nenani elithile lokucindezela kokufaka. Lapho uklama usayizi we-O-ring seal kanye ne-groove, ukucindezela okufanele kufanele kucatshangelwe. Osayizi abajwayelekile be-O-ring seal kanye nosayizi abahambisanayo be-groove sebevele bacacisiwe kumazinga, ngakho-ke ungakhetha ngokuya ngamazinga.

Ubukhulu obungaphezulu be-groove ye-seal akufanele bube bukhulu kakhulu, ngokuvamile i-Ra1.6 ukuya ku-Ra3.2. Uma umfutho uphezulu kufanele kube buncane ubulukhuni.

Ngokuvala uphawu lokucindezela okukhulu, ukuze ugweme ukuthi uphawu lukhishwe ngaphandle kwegebe futhi lubangele ukwehluleka, igebe kufanele libe lincane njenge. Ngakho-ke, kuyadingeka ukuqinisekisa ukuthi flatness kanye roughness of the surface contact on the low-pressure side of the seal. Ukucaba kufanele kube phakathi kuka-0.05mm, futhi ubuhwaqane kufanele bube phakathi kuka-Ra1.6.

Ngesikhathi esifanayo, njengoba uphawu lwe-O-ring luncike ekucindezelweni kwe-liquid ukuze kudluliselwe ingcindezi ku-O-ring seal bese kuthi kuthintana nezinyosi, kufanele kube negebe elithile ohlangothini lwe-high-pressure of the seal, okungukuthi ngokuvamile phakathi kuka-0 no-0.25 mm.