Izimiso zokukhetha kanye nezikhathi ezisebenzayo zamavalve ovemvane

1.Lapho i-valve ye-butterfly isebenza khona

Ama-valve e-Butterflyzilungele ukulawulwa kokugeleza.Njengoba umfutho we-valve uvemvane epayipini umkhulu uma kuqhathaniswa, cishe uphindwe kathathu kune-valve yesango.Ngakho-ke, lapho ukhetha i-valve ye-butterfly, ithonya lokulahlekelwa kwengcindezi yesistimu yepayipi kufanele licatshangelwe ngokugcwele, futhi amandla epuleti ye-butterfly ukumelana nokucindezela kwepayipi lepayipi kufanele kucatshangelwe uma ivaliwe.ucansi.Ngaphezu kwalokho, kuyadingeka ukucabangela umkhawulo wokushisa okusebenzayo ukuthi impahla yesihlalo se-valve elastic ingamelana namazinga okushisa aphezulu.

Ubude besakhiwo nokuphakama okuphelele kwe-valve ye-butterfly kuncane, isivinini sokuvula nokuvala siyashesha, futhi sinezici ezinhle zokulawula uketshezi.Isimiso sesakhiwo se-valve ye-butterfly ifaneleka kakhulu ekwenzeni ama-valve amakhulu.Lapho i-valve ye-butterfly idingeka ukulawula ukugeleza, into ebaluleke kakhulu ukukhetha kahle ubukhulu kanye nohlobo lwe-valve butterfly ukuze lusebenze kahle nangempumelelo.

Ngokuvamile, ekushayeni, ekulawuleni nasekulawuleni udaka, ubude besakhiwo budingeka bube bufushane futhi isivinini sokuvula nokuvala siyashesha (1/4r).I-low pressure cut-off (umehluko omncane wengcindezi), i-valve uvemvane iyanconywa.

Endabeni yokulungiswa kwezikhundla ezimbili, ukuhamba okuncane, umsindo ophansi, i-cavitation kanye ne-vaporization, inani elincane lokuvuza emkhathini, kanye nemidiya ehlukumezayo, ama-butterfly valves angasetshenziswa.

Lapho usebenzisa ama-valve ovemvane ngaphansi kwezimo ezikhethekile ezinjengokulawula ukugobhoza, izidingo eziqinile zokuvala, ukugqokwa okuqinile, izinga lokushisa eliphansi (cryogenic) nezinye izimo zokusebenza, idizayini ekhethekile ye-eccentric eccentric kathathu noma eccentricity ephindwe kabili enophawu lwensimbi oluklanywe ngokukhethekile olunomshini wokulungisa luyadingeka i-Butterfly. i-valve.

I-valve butterfly ephakathi nendawo ilungele amanzi ahlanzekile, indle, amanzi olwandle, amanzi anosawoti, umusi, igesi yemvelo, ukudla, imithi, uwoyela kanye nemikhiqizo ehlukahlukene edinga ukubekwa uphawu okuphelele, ukuvuza kokuhlolwa kwegesi okuyiziro, izidingo zokuphila eziphakeme, kanye nezinga lokushisa lokusebenza -10 ~ 150℃.Isisekelo se-Acid namanye amapayipi.

I-valve uvemvane evalekile evalwe ngokuthambile ilungele ukuvuleka nokuvala okunezindlela ezimbili kanye nokulungiswa kwamapayipi komoya kanye nokukhipha uthuli.Isetshenziswa kabanzi kumapayipi egesi nasemigwaqweni yamanzi kwezensimbi, imboni yokukhanya, amandla kagesi, kanye nezinhlelo ze-petrochemical.

I-valve yevemvane ene-eccentric ephindwe kabili ye-metal-to-metal ifanele ukushisisa kwasemadolobheni, isitimu, amanzi negesi, uwoyela, amapayipi e-asidi kanye ne-alkali, njengethuluzi elilawulayo nelinqamula.

Ngaphezu kokusetshenziswa njenge-valve yokulawula uhlelo lokuhlukanisa igesi lokuhlukanisa i-pressure-scale (PSA), i-valve yevemvane eyi-metal-metal surface seal eccentric ingasetshenziswa kabanzi ku-petroleum, petrochemical, chemical, metallurgical, electric. amandla nezinye izinkambu.Kuyi-valve yesango, i-valve yokumisa, njll. Umkhiqizo ohlukile omuhle.

2.Isimiso sokukhetha se-butterfly valve

1. Njengoba i-valve uvemvane inokuncipha kokucindezela okukhulu uma kuqhathaniswa ne-valve yesango, ilungele amapayipi amapayipi anezidingo zokulahlekelwa kwengcindezi eqinile.

2. Njengoba i-valve ye-butterfly ingasetshenziselwa ukulungiswa kokugeleza, ifanele ukusetshenziswa kumapayipi adinga ukulungiswa kokugeleza.

3. Ngenxa yomkhawulo wesakhiwo se-valve ye-butterfly kanye nezinto zokuvala uphawu, akufanelekile izinga lokushisa eliphezulu kanye nesistimu yamapayipi okucindezela okukhulu.Ngokuvamile, izinga lokushisa lokusebenza lingaphansi kuka-300 ℃, futhi ukucindezela okujwayelekile kungaphansi kwe-PN40.

4. Njengoba ubude besakhiwo se-valve uvemvane bufushane futhi bungenziwa ububanzi obukhulu, i-valve uvemvane kufanele isetshenziswe ezikhathini lapho ubude besakhiwo budingeka ukuthi bube bufushane noma i-valve enkulu yobubanzi (njenge-DN1000). noma ngaphezulu).

5. Njengoba i-valve butterfly ingavulwa noma ivalwe ngokuzungeza i-90 ° kuphela, kungcono ukukhetha i-valve butterfly ngezikhathi ezidinga ukuvulwa nokuvala ngokushesha.