Singeniso Sevalvu Yeluvivane

Setfulo:

Ivalvi yevivaneivela emndenini wemavalvu labitwa ngekutsi .emavalvu lajika ngekota. Ekusebenteni, i-valve ivulekile noma ivalwe ngalokuphelele lapho le-disc ijikeletwa ikota yekujika. “Levivane” lidiski lensimbi lefakwe endvuku. Uma ivalve ivaliwe, le disc iyajikwa kute ivimbe ngalokuphelele indlela yekuhamba. Uma le valve ivulekile ngalokuphelele, le disc iyajikeletwa ikota yekujika kute ivumele kuhamba lokucishe kungavinjelwa kwaleliketjezi. I valve ingaphindze ivulwe ngekukhula kute kugeleze throttle.

Kukhona tinhlobo letehlukene temavalvu e-butterfly, ngayinye ilungiselelwe kucindzeteleka lokuhlukile kanye nekusetjentiswa lokuhlukile. I-valve ye-butterfly le-zero-offset, lesebentisa kugucugucuka kwerabha, inesilinganiso sekucindzeteleka lesiphansi kakhulu. Le valve lesetulu lephindvwe kabili le-offset butterfly, lesetjentiswa etinhlelo tekucindzeteleka lokusetulu kancane, i-offset kusuka emgceni losemkhatsini wesihlalo se-disc kanye nesivalo semtimba (offset munye), kanye nemugca losemkhatsini we-bore (offset lembili). Loku kwenta sento se cam ngesikhatsi sekusebenta kuphakamisa situlo ngaphandle kwesivalo lokuholela ekukhukhulekeni lokuncane kunaloko lokudalwe kumklamo we zero offset futsi kunciphisa umkhuba wayo wekugcoka. I-valve lefanele kakhulu tinhlelo letinemfutfo lomkhulu yi-valve ye-butterfly le-offset katsatfu. Kule valve i-axis yekutsintsana kwesihlalo se-disc iyasuswa, lesebenta kucishe kucedze kuchumana lokushelelako emkhatsini we-disc nesihlalo. Esimeni se triple offset valves situlo sakhiwe ngensimbi kwentela kutsi singasetjentiswa ngemshini njengekufeza bubble tight shut-off uma sitsintsana ne disc.

Tinhlobo

1. Emavalvu evivane lasemkhatsini– loluhlobo lwevalve lunesihlalo serabha lesicinile lesine-disc yensimbi.
2. Emavalvu evivane laphindvwe kabili(emavalvu eluvivane lasebenta ngendlela lesetulu noma emavalvu eluvivane lashintja kabili) – luhlobo lolwehlukile lwetintfo lusetjentiselwa situlo kanye ne disc.
3. Emavalvu evivane laphindvwe katsatfu(emavalvu eluvivane lakhishwa katsatfu) – letihlalo tingakhiwe ngema laminated noma ngesihlalo lesicinile sensimbi.

Emavalvu lavivane lafana ne-wafer

Iivalve yeluvivane yesitayela se-waferyentelwe kugcina luphawu ngekumelene nemehluko wekucindzeteleka lokucondziswe kabili kuvikela noma ngukuphi kugeleta emuva etinhlelo letentelwe kugeleta lokucondzile. Ikufeza loku ngekuvala lokucinile; ie, gasket, o-ring, imishini lecinisekile, kanye nebuso bevalve lesicaba emaceleni lasetulu nalaphansi evalve.

Ivalvu levivane yesitayela se-Lug

Emavalvu esitayela se-Lugbabe nekufakwa lokunetintsambo kuto totimbili tinhlangotsi temtimba wevalve. Loku kwenta kutsi tifakwe eluhlelweni kusetjentiswa emasethi lamabili emabhawudi futsi kute emanti. Le valve ifakwa emkhatsini wema flange lamabili kusetjentiswa isethi lehlukile yemabhawudi e flange ngayinye. Loku kusetha kuvumela noma nguyiphi incenye yeluhlelo lwemaphayiphi kutsi incishiwe ngaphandle kwekuphazamisa lolunye luhlangotsi.

I-valve ye-butterfly yesitayela se-lug lesetjentiswa enkonzweni lefile ivame kuba nesilinganiso sekucindzeteleka lesincishisiwe. Sibonelo, ivalve yeluvivane lefana ne lug lefakwe emkhatsini wema flanges lamabili inesilinganiso sekucindzeteleka lesingu 1,000 kPa (150 psi). Le valve lefanako lefakwe nge flange yinye, enkonzweni lefile, inesilinganiso se 520 kPa (75 psi). Emavalvu lane Lugged amelana kakhulu nemakhemikhali kanye netinhlayiya futsi angakhona kuphatsa emazinga ekushisa lafika ku 200 °C, lokwenta kutsi kube sisombululo lesigucukako.

Sebentisa embonini

Etimbonini temisebenti yemitsi, emakhemikhali, kanye nekudla, ivalve yebutterfly isetjentiswa kuphazamisa kuhamba kwemkhicito (lokucinile, lokuketshezi, igesi) ngaphakatsi kwenchubo. Emavalvu lasetjentiswa kuletimboni avame kwentiwa ngekuya kwemihlahlandlela ye cGMP (umkhuba lomuhle wekukhicita nyalo). Emavalvu ebutterfly avame kutsatsa sikhundla semavalvu ebhola etimbonini letiningi, ikakhulu petroleum, ngenca yetindleko letiphansi kanye nekufakwa kalula, kepha emaphayiphi lacuketse emavalvu ebutterfly angeke ‘akhonjwe’ kwentela kuhlanta.

Titfombe