Fuskokin Flange

Menene fuskar Flange?

Ana amfani da nau'ikan fuskoki daban-daban na flange azaman abubuwan tuntuɓar don wurin zama kayan rufewa. ASME B16.5 da B16.47 suna ayyana nau'ikan fuskoki daban-daban na flange, gami da tashe fuska, manyan fuskokin maza da mata waɗanda ke da girma iri ɗaya don samar da yanki mai girman gaske.

Sauran fuskokin flange da waɗannan ma'aunai ke rufe sun haɗa da manyan fuska da ƙananan harshe-da-tsagi, da haɗin zoben da ke fuskantar musamman don nau'in haɗin gwiwa na ƙarfe na gaskets.

Fuskar da aka daga (RF)

Flange Fuskar da aka ɗauka shine mafi yawan nau'in da ake amfani da shi a aikace-aikacen shuka, kuma yana da sauƙin ganewa. Ana kiranta da fuska mai ɗagawa saboda an ɗaga saman gaskat sama da fuskar da'irar. Wannan nau'in fuskar yana ba da damar yin amfani da nau'ikan ƙirar gasket mai fa'ida, gami da nau'ikan takaddar zobe na lebur da abubuwan ƙarfe na ƙarfe kamar rauni mai karkace da nau'ikan jaket biyu.

Manufar flange na RF shine don tattara ƙarin matsa lamba akan ƙaramin yanki na gasket kuma ta haka yana ƙara ƙarfin ɗaukar matsi na haɗin gwiwa. Diamita da tsayi suna cikin ASME B16.5 da aka ayyana, ta ajin matsa lamba da diamita. Matsa lamba na flange yana ƙayyade tsayin fuskar da aka ɗaga.

Ƙarshen fuskar flange na yau da kullun don ASME B16.5 RF flanges shine 125 zuwa 250 µin Ra (3 zuwa 6 µm Ra).

Tsawon Fuskar da aka daga

Don ma'aunin tsayin H da B na duk sifofin da aka siffanta na flanges akan wannan gidan yanar gizon, ban da Haɗin Haɗin gwiwa na Lap, yana da mahimmanci a fahimta da tunawa masu zuwa:

A cikin azuzuwan matsa lamba 150 da 300, tsayin fuskar da aka ɗaga yana kusan 1.6 mm (1/16 inch). A cikin waɗannan nau'ikan matsi guda biyu, kusan duk masu samar da flanges, suna nunawa a cikin kasidarsu ko ƙasidarsu, girman H da B gami da tsayin fuska. ((Hoto na 1))

A cikin azuzuwan matsa lamba 400, 600, 900, 1500 da 2500, tsayin fuskar da aka ɗaga ya kai kusan 6.4 mm (1/4 inch). A cikin waɗannan azuzuwan matsin lamba, yawancin masu samarwa suna nuna girman H da B ban da tsayin fuska. (Hoto na 2)

Fuskar lebur (FF)

Flat Face flange yana da saman gasket a cikin jirgin sama ɗaya da fuskar da'irar. Aikace-aikace masu amfani da flanges na fuska akai-akai sune waɗanda aka yi flange na mating ko flanged fit daga simintin gyare-gyare.

Ba za a taɓa rufe flange na fuskar lebur ba zuwa ga flange ɗin da aka ɗaga. ASME B31.1 ta ce a lokacin da ake haɗa lebur fuska jefa baƙin ƙarfe flanges zuwa carbon karfe flanges, da tashe fuska a kan carbon karfe flange dole ne a cire, da kuma cewa cikakken fuska gasket ake bukata. Wannan shi ne don kiyaye bakin ciki, ɗan ƙaramin simintin simintin ƙarfe daga kasancewa cikin ratar da ta haifar da ɗagarar fuskar flange ɗin ƙarfe na carbon.

Haɗin Nau'in ringi (RTJ)

Ana amfani da flanges Nau'in Ring Nau'in haɗin gwiwa a cikin babban matsa lamba (Class 600 da ƙimar mafi girma) da/ko sabis ɗin zafin jiki sama da 800°F (427°C). Suna da tsagi da aka yanke a cikin fuskokinsu waɗanda gas ɗin zobe na ƙarfe. Hatimin flanges lokacin da aka ƙara matsar da kusoshi suna damfara gasket tsakanin flanges cikin ramuka, suna lalata (ko Coining) gasket don yin hulɗar kusanci a cikin ramuka, ƙirƙirar hatimin ƙarfe zuwa ƙarfe.

Flange na RTJ na iya samun fuska mai ɗagawa tare da ƙwanƙolin zobe a ciki. Wannan fuskar da aka ɗaga ba ta aiki a matsayin wani ɓangare na hanyar rufewa. Don flanges na RTJ waɗanda ke hatimi tare da gaskets na zobe, haɓakar fuskokin flanges masu haɗawa da matsa lamba na iya tuntuɓar juna. A wannan yanayin, gasket ɗin da aka matsa ba zai ɗauki ƙarin nauyi fiye da tashin hankali ba, girgizawa da motsi ba za su iya ƙara murkushe gas ɗin ba kuma su rage tashin hankali.

Ring Type Joint gaskets

Ring Type Joint gaskets ne karfe sealing zobba, dace da high-matsi da kuma high-zazzabi aikace-aikace. Ana amfani da su koyaushe zuwa na musamman, masu rakiyar flanges waɗanda ke tabbatar da ingantaccen, abin dogaro tare da ingantaccen zaɓi na bayanan martaba da abu.

Ring Type Joint gaskets an tsara su don hatimi ta hanyar "launi na farko" ko aikin wedging tsakanin flange da gasket. Ta hanyar yin amfani da matsa lamba akan haɗin hatimi ta hanyar ƙarfin kulle, ƙarfe "mai laushi" na gasket yana gudana a cikin tsarin microfine na kayan flange mai wuya, da ƙirƙirar hatimi mai mahimmanci da inganci.

Yawancin nau'in da aka yi amfani da shi shine saloRzobe wanda aka ƙera daidai da ASME B16.20 da aka yi amfani da shi tare da flanges ASME B16.5, aji 150 zuwa 2500. Salon 'R' nau'in nau'in zobe ana kera su a cikin daidaitawar oval da octagonal.

TheOctagonalzobe yana da ingantaccen hatimi fiye da oval kuma zai zama gasket ɗin da aka fi so. Koyaya, kawai sashin giciye na oval kawai za'a iya amfani dashi a cikin tsohuwar nau'in zagaye na ƙasa. Sabuwar ƙirar tsagi na ƙasa mai lebur za ta karɓi ko dai na oval ko ɓangaren giciye octagonal.

An tsara nau'in nau'in zobe na Style R don hatimi har zuwa 6,250 psi daidai da ƙimar matsa lamba ASME B16.5 kuma har zuwa 5,000 psi.

Farashin OVAL

R OCTAGONAL

RX

BX

TheRXnau'in ya dace da matsa lamba har zuwa mashaya 700. Wannan RTJ yana da ikon rufe kansa. Fuskokin rufewa na waje suna yin hulɗa ta farko tare da flanges. Tsarin tsarin da ya fi girma yana haifar da matsa lamba mafi girma. Nau'in RX yana canzawa tare da daidaitattun samfuran R.

TheBXnau'in ya dace da matsananciyar matsa lamba har zuwa mashaya 1500. Wannan haɗin zoben ba zai iya musanya da wasu nau'ikan ba, kuma ya dace kawai don nau'in API na BX flanges da tsagi.

Dole ne a gama rufe saman ramukan haɗin gwiwar zobe da kyau zuwa 63 Microinches kuma su kasance marasa ƙorafi, kayan aiki ko alamomin magana. Suna hatimi ta hanyar tuntuɓar layin farko ko aikin ƙwanƙwasa kamar yadda ake amfani da ƙarfin matsawa. Taurin zoben ya kamata koyaushe ya zama ƙasa da taurin flanges.

Zaɓin kayan aiki

Teburin da ke ƙasa yana nuna abubuwan da aka fi amfani da su don haɗin gwiwar nau'in zobe.

Harshe-da-Groove (T&G)

Dole ne a daidaita fuskokin Harshe da Tsagi na wannan ɓangarorin. Fuskar flange ɗaya tana da zobe (harshe) da aka ɗauka akan fuskar flange yayin da flange ɗin mating yana da madaidaicin baƙin ciki (Groove) wanda aka ƙera a fuskarta.

Fuskokin harshe-da-tsagi an daidaita su cikin manya da ƙanana iri biyu. Sun bambanta da namiji da mace a cikin cewa diamita na ciki na harshe-da-tsagi ba su wuce cikin tushe na flange ba, don haka yana riƙe da gasket akan diamita na ciki da na waje. Ana yawan samun waɗannan akan murfin famfo da Valve Bonnets.

Harshe-da-tsagi suma suna da fa'ida ta yadda suna daidaita kansu kuma suna aiki azaman tafki don mannewa. Haɗin gyale yana riƙe da axis na lodi a layi tare da haɗin gwiwa kuma baya buƙatar babban aikin injin.

Ba za a taɓa rufe fuskokin gaba ɗaya kamar RTJ, TandG da FandM tare ba. Dalilin haka kuwa shi ne, wuraren tuntuɓar ba su daidaita ba kuma babu gasket da ke da nau'i ɗaya a gefe ɗaya da wani nau'i a gefe guda.

Namiji-da-Mace (M&F)

Tare da wannan nau'in flanges kuma dole ne a daidaita su. Fuskar flange ɗaya tana da yanki wanda ya wuce fuskar flange na al'ada (Namiji). Sauran flange ko mating flange yana da madaidaicin ɓacin rai (Mace) wanda aka ƙera a cikin fuskarsa.

Fuskar mace tana da zurfin 3/16-inch, fuskar namiji tana da tsayi 1/4-inch, kuma dukkansu sun gama sumul. Diamita na waje na fuskar mace yana aiki don ganowa da riƙe gasket. A ka'ida 2 versions suna samuwa; Ƙananan M&F Flanges da Manyan M&F Flanges. Fuskokin maza da mata na al'ada ana samun su akan harsashi mai zafi zuwa tashar da murfin flanges.

Abũbuwan amfãni da rashin amfani na T&G da M&F flange fuskoki

Amfani
Ingantattun kaddarorin rufewa, madaidaicin wuri da ainihin matsi da abin rufewa, amfani da wasu, mafi dacewa da abin rufewa (O-rings).

Rashin amfani
Samuwar kasuwanci da farashi. Fuskokin da aka haɓaka na yau da kullun sun fi kowa kuma a shirye suke duka dangane da Valves, flanges da kayan rufewa. Wani rikitarwa kuma shine cewa dole ne a yi amfani da wasu ƙaƙƙarfan ƙa'idodi akan ƙirar bututun. Kuna oda Valves ya zama mace ta ƙare bangarorin biyu, ko kuma a gefe ɗaya watakila, a cikin wanne yanayi kuna nuna duk ƙarshen namiji a cikin hanyar kwarara, ko menene. Hakanan ya shafi duk wani haɗin haɗin gwiwa / jirgin ruwa maras kyau ba shakka.