Mefuta ea Flanges
Mefuta ea li-flange
Joalokaha ho se ho hlalositsoe pele, mefuta ea li-flange tse sebelisoang ka ho fetisisa ASME B16.5 ke: Welding Neck, Slip On, Socket Weld, Lap Joint, Threaded and Blind flange. Ka tlase u tla fumana tlhaloso e khutšoanyane le tlhaloso ea mofuta o mong le o mong, o phethiloeng ka setšoantšo se qaqileng.
Mefuta e tsebahalang haholo ea li-flange
Welding Neck flange
Li-Welding Neck Flanges li fumaneha habonolo sebakeng se selelele sa tapered, se eang butle-butle ho botenya ba lebota ho tloha phala kapa ho lekana.
Sebaka se selelele sa tapered se fana ka matlafatso ea bohlokoa bakeng sa tšebeliso ea lits'ebetso tse 'maloa tse kenyelletsang khatello e phahameng, sub-zero le / kapa mocheso o phahameng. Phetoho e boreleli ho tloha botenya ba flange ho ea ho phaephe kapa botenya ba lebota bo loketseng bo entsoeng ke taper bo molemo haholo, tlasa maemo a ho kobeha khafetsa, ho bakoang ke ho atolosoa ha mela kapa matla a mang a feto-fetohang.
Li-flange tsena li borehile ho tsamaisana le bophara bo ka hare ba phaephe ea ho nyallana kapa ho lekana kahoo ho ke ke ha e-ba le thibelo ea phallo ea lihlahisoa. Sena se thibela pherekano lenonyellong le ho fokotsa khoholeho. Li boetse li fana ka kabo e ntle ea khatello ea maikutlo ka har'a "tapered hub" 'me li etsoa habonolo radiograph bakeng sa ho lemoha liphoso.
Mofuta ona oa flange o tla chesetsoa phala kapa o kenngoe ka ho kenella ka ho feletseng, V weld (Buttweld).
Lintlha tsa Welding Neck flange
1. Weld Neck flange2. Butt Weld
3. Pipe kapa Fitting
Slip On flange
Matla a baloang ho tloha ho Slip On flange tlas'a khatello ea ka hare ke ea tatellano ea likarolo tse peli ho tse tharo tsa Welding Neck flanges, 'me bophelo ba bona tlas'a mokhathala ke hoo e ka bang karolo ea boraro ea ho qetela.
Ho hokahanya le phala ho etsoa ka li-welds tse 2 tsa fillet, hammoho le ka ntle le ka hare ho flange.
Litekanyo tsa X setšoantšong, li batla li le:
Botenya ba lebota ba phala + 3 mm.
Sebaka sena sea hlokahala, ho se senye sefahleho sa flange, nakong ea ts'ebetso ea welding.
Bothata ba flange ke, molao-motheo oo kamehla pele phala e tlameha ho chesetsoa, e ntan'o ba e loketseng feela. Motsoako oa flange le setsoe kapa flange le tee ha ho khonehe, hobane li-fittings tse nang le mabitso ha li na pheletso e otlolohileng, selaete se felletseng ho Slip On flange.
Lintlha tsa Slip On flange
1. Slip On flange2. E tletse weld ka ntle
3. E tletse weld ka hare4. Pipe
Socket Weld flange
Socket Weld flanges qalong e ile ea ntlafatsoa hore e sebelisoe liphaepheng tse nyane tsa khatello e phahameng. Matla a bona a tsitsitseng a lekana le Slip On flanges, empa matla a bona a mokhathala a 50% ho feta li-flange tse peli tse cheselitsoeng ka Slip On.
Khokahano le phala e etsoa ka 1 fillet weld, ka ntle ho flange. Empa pele ho tjheseletsa, ho tlameha ho thehwe sebaka pakeng tsa flange kapa ho kenya le pipe.
ASME B31.1 1998 127.3 Tokisetso ea ho Welding (E) Socket Weld Assembly e re:
Kopanong ea lenonyeletso pele ho tjheseletsa, phala kapa tšupu e tla kenngoa ka har'a sokete ho ea botebong bo boholo, ebe e ntšoa hoo e ka bang 1/16 ″ (1.6 mm) hole le ho kopana pakeng tsa pheletso ea phala le lehetla la sokete.
Sepheo sa ho tlosoa ha bottoming ho Socket Weld hangata ke ho fokotsa khatello e setseng motso oa weld e ka hlahang nakong ea ho tiisa tšepe ea weld. Setšoantšo se u bontša tekanyo ea X bakeng sa lekhalo la katoloso.
Bothata ba flange ena ke lekhalo le nepahetseng, le tlamehang ho etsoa. Ka lihlahisoa tse senyang, haholo-holo lits'ebetsong tsa liphaephe tsa tšepe e sa hloekang, ho petsoha pakeng tsa peipi le flange ho ka baka mathata a ho bola. Lits'ebetsong tse ling flange ena le eona ha e lumelloe. Ha ke setsebi tabeng ena, empa Inthaneteng, u tla fumana boitsebiso bo bongata mabapi le mefuta ea ho bola.
Hape bakeng sa flange ena ea bohlokoa, molao-motheo oo kamehla pele phala e lokela ho chesetsoa ebe e lekana feela.
Lintlha tsa Socket Weld Flange
1. Socket Weld flange2. E tletse weld3. Pipe
X= Lekhalo la katoloso
Lap Joint flange
Li-Lap Joint Flanges li na le litekanyo tse tšoanang tse tšoanang le tse ling tsa flange tse boletsoeng leqepheng lena leha ho le joalo ha li na sefahleho se phahamisitsoeng, li sebelisitsoe hammoho le "Lap Joint Stub End".
Li-flange tsena li batla li tšoana le Slip On flange ntle le radius mateanong a sefahleho sa flange le bore ho amohela karolo e nang le flange ea Stub End.
Bokhoni ba bona ba ho ts'oara khatello bo nyane, haeba bo le teng, bo betere ho feta ba Slip On flanges mme bophelo ba mokhathala bakeng sa kopano ke karolo ea leshome feela ea Welding Neck flanges.
Li ka sebelisoa ka likhatello tsohle 'me li fumaneha ka boholo bo feletseng. Li-flange tsena li thella holim'a phala, 'me ha li chesehe kapa ha li tlameletsoe ho eona. Khatello ea bolting e fetisetsoa ho gasket ka khatello ea flange khahlanong le mokokotlo oa lesela la pipe (Stub End).
Lap Joint flanges e na le melemo e itseng e khethehileng:
- Bolokolohi ba ho pota-pota peipi bo thusa ho koala masoba a li-flange tse hanyetsanang.
- Ho haella ha ho kopana le mokelikeli o ka phala hangata ho lumella ho sebelisoa ha li-flange tsa tšepe tsa carbon tse theko e tlaase tse nang le phala e thibelang ho bola.
- Lits'ebetsong tse hoholehang kapa tse senyehang kapele, li-flange li ka bolokoa hore li sebelisoe hape.
Lintlha tsa Lap Joint Flange
1. Lap Joint flange2. Qetello ea Stub
3. Butt weld4. Pipe kapa Fitting
Qetello ea Stub
A Stub End kamehla e tla sebelisoa ka Flange e Kopanetsoeng ea Lap, joalo ka letlapa le tšehetsang.
Likhokahano tsena tsa flange li sebelisoa, ka khatello e tlase le lits'ebetso tse seng tsa bohlokoa, 'me ke mokhoa o theko e tlaase oa ho phunya.
Ka tsamaiso ea phala ea tšepe e sa hloekang, ka mohlala, ho ka sebelisoa flange ea carbon steel, hobane ha e kopane le sehlahisoa ka pipe.
Li-Stub Ends li fumaneha hoo e ka bang ka bophara ba liphaephe tsohle. Litekanyo le mamello ea litekanyo li hlalositsoe ho ASME B.16.9 standard. Li-Stub Ends (li-fittings) tse sa khoneng ho bola boima bo bobebe li hlalosoa ho MSS SP43.
Lap Joint Flange e nang le Qetello ea Stub
Flange e nang le likhoele
Li-Flanges tse nang le likhoele li sebelisetsoa maemo a khethehileng, 'me molemo oa tsona o ka sehloohong ke hore li ka hokelloa phala ntle le ho tjheseletsa. Ka linako tse ling seal weld e boetse e sebelisoa hammoho le khokahanyo ea khoele.
Leha e ntse e fumaneha ka boholo le likhatello tsa khatello, li-screw fittings kajeno li sebelisoa hoo e batlang e le ka boholo ba liphaephe tse nyane.
Flange e entsoeng ka khoele kapa e loketseng ha e tšoanelehe bakeng sa tsamaiso ea liphaephe e nang le botenya ba marako a tšesaane, hobane khoele ea ho khaola ka pipe ha e khonehe. Kahoo, ho tlameha ho khethoa botenya ba lebota botenya…ke eng e tenya?
ASME B31.3 Piping Guide e re:
Moo peipi ea tšepe e kengoang le ho sebelisoa bakeng sa tšebeletso ea mouoane ka holimo ho 250 psi kapa bakeng sa tšebeletso ea metsi e ka holimo ho 100 psi ka mocheso oa metsi o ka holimo ho 220° F, phala e tla hloka moroallo 'me e be le botenya bo lekanang le kemiso ea 80 ea ASME B36.10.
Lintlha tsa Threaded flange
1. Flange e nang le likhoele2. Khoele3. Pipe kapa Fitting
Flange e foufetseng
Li-Blind Flanges li entsoe ntle le bore mme li sebelisetsoa ho koala lipheletsong tsa liphaephe, li-valve le menyetla ea likepe tsa khatello.
Ho latela maikutlo a khatello ea ka hare le ho kenya bolt, li-flange tse foufetseng, haholo-holo ka boholo bo boholo, ke mefuta ea li-flange tse hatelitsoeng ka ho fetisisa.
Leha ho le joalo, boholo ba likhatello tsena ke mefuta e kobehang haufi le bohareng, 'me kaha ha ho na bophara bo tloaelehileng ka hare ho bophara, li-flange tsena li loketse lisebelisoa tse phahameng tsa mocheso oa khatello.
Lintlha tsa Blind flange
1. Flange e foufetseng2. Stud Bolt3. Gasket4. Flange e 'ngoe
Maikutlo a sengoli…
Mokhoa o bonolo oa ho etsa 1/16 ″ Lekhalo…
- Na u kile ua bona selikalikoe sa tumellano ea Socket Weld?
Ke selikalikoe se arohaneng se entsoeng 'me se etselitsoe ho fana ka lekhalo le lekantsoeng pele la 1/16 ″ bakeng sa li-socket welds. E entsoe ka tšepe e sa hloekang e netefalitsoeng, 'me e hanela ho bola ho tsoa lik'hemik'hale, lisebelisoa tsa radioactive le metsi. Hang ha e kenngoa ka har'a ho kenya reng e fetoha karolo e sa feleng ea lenonyeletso. E ke ke ea reketla kapa ea thothomela le tlas'a khatello e feteletseng.
Mokhoa o mong ke oa ho sebelisa boto e qhibilihang ka metsing. Etsa mehele e nang le sekoti se nang le sekoti se nang le bophara ba ka ntle le ka hare ba phala. Kenya selikalikoe ka har'a flange kapa se loketseng 'me ka mor'a hydrotesting ha ho sa na selikalikoe.
Bakeng sa litharollo ka bobeli, kopa tumello ho moreki oa hau.
Ba tšoare sebakeng sa bona…
- Haeba khokahanyo ea Lap Joint flanged e tlameha ho qhaqhoa, mohlala ho nka sebaka sa gasket, ha ho khonehe kamehla ho etsa joalo ka mokhoa o tloaelehileng. Mokhoa o tloaelehileng ke ts'ebeliso ea "flange spreader" kapa "crowbar" e sutumelitseng mapheo a mabeli.
Ka Lap Joint flanges ha ho khonehe, hobane tsena li thellela morao holim'a phala, ha Stub Ends e lula hammoho. Ho thibela seo, hangata ho libakeng tse 3, limilimithara tse le 'ngoe ka mor'a flange, ho Stub End, likotoana tse khutšoanyane tsa tšepe, li tla kenngoa.
Ha ho na molao o akaretsang oa hore na Lap Joint flange e tlameha ho ts'oaroa joang sebakeng sa eona, ka hona e ka kheloha ho latela litlhaloso tsa bareki.
O ne o tseba seo ...?
- Ka boholo bo bonyenyane, palo ea lerako e lahlehileng nakong ea khoele e lekana le hoo e ka bang 55% ea lebota la pele la liphaephe.
Butt welds vs Fillet welds
- Litsamaisong tse nang le likhatello tse batlang li phahame le mocheso, re hloka ho qoba tšebeliso ea li-welds tsa fillet. Butt welds, lits'ebetsong tse joalo li tlameha ho sebelisoa. Matla a butt weld ke bonyane matla a thepa ea motheo. Matla a li-welds tsa fillet tse amanang le matla a butt weld, ke hoo e ka bang karolo ea boraro.
Ka likhatello tse phahameng le lithempereichara, ho atolosoa le ho fokotseha ho ile ha baka ka potlako bakeng sa mapetsong a tebileng a li-welds tsa fillet 'me kahoo ho sebelisoa li-welds tsa butt ke tsa bohlokoa.
Bakeng sa li-conduits ho mechini ea bohlokoa joalo ka lipompo, li-compressor le li-turbine, tse pepesehileng ho sisinyeha (ho kenyelletsa ho atolosoa le ho honyela), re lokela ho qoba ts'ebeliso ea li-welds tsa fillet kapa likhokahano tse kentsoeng.
Li-welds tsa fillet li na le kutlo e phahameng ea mapetsong ka lebaka la khatello ea maikutlo, ha li-welds tsa butt li khetholloa ka phapanyetsano e bonolo ea likhohlano.
Kahoo, bakeng sa maemo a mahlonoko, re tlameha ho sebelisa li-flange tse hokahaneng ka ho cheselletsa butt joalo ka molala oa weld le mofuta oa lesale, 'me re qobe ho sebelisa li-flange tse hokahaneng ke li-welds tsa fillet joalo ka Slip On kapa Socket Weld.
Nako ea poso: Jun-05-2020