1 Lintlha tsa bohlokoa tsa khetho ea li-valve

1.1 Hlakisa morero oa valve ka har'a sesebelisoa kapa sesebelisoa

Fumana maemo a tshebetso a valve: mofuta wa sekgahla se sebetsang, kgatello ya tshebetso, mocheso wa tshebetso le mokgwa wa taolo ya tshebetso, jj.;

1.2 Khetha mofuta oa valve ka nepo

Khetho e nepahetseng ea mofuta oa valve e ipapisitse le kutloisiso e felletseng ea moqapi ea ts'ebetso eohle ea tlhahiso le maemo a ts'ebetso. Ha a khetha mofuta oa valve, moqapi o lokela ho qala ka ho tseba litšobotsi tsa sebopeho le ts'ebetso ea valve ka 'ngoe;

1.3 Fumana khokahano ea ho qetela ea valve

Har'a khokahano e nang le khoele, khokahano ea flange le khokahano ea pheletso ea welding, tse peli tsa pele li sebelisoa haholo. Li-valve tse nang le khoele ke li-valve tse nang le bophara bo tloaelehileng ba ka tlase ho 50mm. Haeba boholo ba bophara bo le boholo haholo, ho kenya le ho tiisa khokahano ho thata haholo. Li-valve tse hokahantsoeng ka flange li bonolo ho li kenya le ho li qhaqha, empa li boima ebile li theko e boima ho feta li-valve tse nang le khoele, kahoo li loketse likhokahano tsa liphaephe tsa bophara le khatello e fapaneng. Likhokahano tsa welding li loketse maemo a boima ba mojaro 'me li tšepahala ho feta likhokahano tsa flange. Leha ho le joalo, ho thata ho qhaqha le ho kenya li-valve tse hokahantsoeng ka welding, kahoo tšebeliso ea eona e lekanyelitsoe maemong ao hangata e ka sebetsang ka mokhoa o tšepahalang nako e telele, kapa maemo a ts'ebeliso a le boima 'me mocheso o phahame;

1.4 Khetho ea thepa ea li-valve

Ntle le ho nahana ka thepa ea 'mele (mocheso, khatello) le thepa ea lik'hemik'hale (ho bola) ha setsi se sebetsang, bohloeki ba setsi (hore na ho na le likaroloana tse tiileng) bo lokela ho ithutoa ha ho khethoa thepa ea khetla ea valve, likarolo tsa ka hare le bokaholimo ba ho koala. Ho phaella moo, melaoana e amehang ea mmuso le lefapha la basebelisi e lokela ho buuoa ka eona. Khetho e nepahetseng le e utloahalang ea thepa ea valve e ka fumana bophelo ba tšebeletso bo theko e tlaase ka ho fetisisa le ts'ebetso e ntle ka ho fetisisa ea valve. Taelo ea khetho ea thepa ea 'mele oa valve ke: tšepe e entsoeng ka tšepe-khabone-tšepe e sa hloekang, 'me taelo ea khetho ea thepa ea lesale la ho koala ke: tšepe ea rabara-koporo-alloy-F4;

1.5 Tse ling

Ho phaella moo, sekgahla sa phallo le boemo ba kgatello ya mokelikeli o phallang ka hara valve di lokela ho lekanyetswa, mme valve e loketseng e lokela ho kgethwa ho sebediswa tlhahisoleseding e teng (jwalo ka dikhatalogaro tsa dihlahiswa tsa valve, disampole tsa dihlahiswa tsa valve, jj.).

2 Selelekela ho Li-valve tse Tloaelehileng

Ho na le mefuta e mengata ea li-valve, 'me mefuta e mengata e rarahane. Mefuta e meholo keli-valve tsa heke, di-valve tsa ho emisa, di-valve tsa ho phunya,li-valve tsa serurubele, di-valve tsa polaka, di-valve tsa bolo, di-valve tsa motlakase, di-valve tsa diaphragm, di-valve tsa ho hlahloba, di-valve tsa polokeho, di-valve tse fokotsang kgatello,maraba a mouoane le li-valve tsa ho tima maemo a tšohanyetso,har'a tsona tse sebelisoang hangata ke li-valve tsa heke, li-valve tsa ho emisa, li-valve tsa throttle, li-valve tsa plug, li-valve tsa serurubele, li-valve tsa bolo, li-valve tsa ho hlahloba, le li-valve tsa diaphragm.

2.1 Valve ea Heke

Valve ea heke ke valve eo 'mele oa eona oa ho bula le ho koala (poleiti ea valve) o tsamaisoang ke kutu ea valve 'me o tsamaea holimo le tlase holim'a sekoahelo sa valve, e ka hokahanyang kapa ea khaola tsela ea mokelikeli. Ha e bapisoa le valve ea ho emisa, valve ea heke e na le ts'ebetso e betere ea ho koala, khanyetso e fokolang ea mokelikeli, boiteko bo fokolang ba ho bula le ho koala, 'me e na le ts'ebetso e itseng ea ho lokisa. Ke e 'ngoe ea li-valve tse koaloang tse sebelisoang haholo. Mathata ke boholo bo boholo, sebopeho se rarahaneng ho feta valve ea ho emisa, ho senyeha habonolo ha bokaholimo ba ho koala, le tlhokomelo e thata. Ka kakaretso ha e lokele ho thiba. Ho ea ka boemo ba khoele kutung ea valve ea heke, e ka aroloa ka mefuta e 'meli: mofuta oa kutu o nyolohang le mofuta oa kutu o patiloeng. Ho ea ka litšobotsi tsa sebopeho sa poleiti ea heke, e ka aroloa ka mefuta e 'meli: mofuta oa wedge le mofuta o bapileng.

2.2 Valve ea ho emisa

Valve ea ho emisa ke valve e koalang e theohelang, moo likarolo tsa ho bula le ho koala (disk ea valve) li tsamaisoang ke kutu ea valve ho ea holimo le tlase ho latela axis ea setulo sa valve (bokaholimo ba ho koala). Ha e bapisoa le valve ea heke, e na le ts'ebetso e ntle ea ho lokisa, ts'ebetso e mpe ea ho koala, sebopeho se bonolo, tlhahiso le tlhokomelo e bonolo, khanyetso e kholo ea mokelikeli, le theko e tlase. Ke valve e khaotsoeng e sebelisoang hangata, e sebelisoang hangata bakeng sa liphaephe tse bophara bo mahareng le bo bonyenyane.

2.3 Valve ea bolo

Likarolo tsa ho bula le ho kwala tsa valve ea bolo ke lisekoere tse chitja ka masoba, 'me selikoere se potoloha le kutu ea valve ho etsa hore valve e bulehe le ho kwala. Valve ea bolo e na le sebopeho se bonolo, e fetoha ka potlako, e sebetsa habonolo, e nyane, e bobebe, likarolo tse 'maloa, e hanyetsa mokelikeli o monyane, e tiisa hantle, 'me e bonolo ho e hlokomela.

2.4 Valve ea throttle

Ntle le diski ea valve, valve ea throttle e na le sebopeho se tšoanang le valve ea ho emisa. Disc ea eona ea valve ke karolo ea throttling, 'me libopeho tse fapaneng li na le litšobotsi tse fapaneng. Bophara ba setulo sa valve ha boa lokela ho ba boholo haholo, hobane bophahamo ba ho buleha ha eona bo bonyenyane 'me sekhahla sa phallo se mahareng sea eketseha, ka hona se potlakisa ho hoholeha ha disc ea valve. Valve ea throttle e na le litekanyo tse nyane, boima bo bobebe, le ts'ebetso e ntle ea tokiso, empa ho nepahala ha tokiso ha ho holimo.

2.5 Valve ea polaka

Valve ea polaka e sebelisa 'mele oa polaka o nang le lesoba le phunyeletsang e le karolo ea ho bula le ho koala, 'me 'mele oa polaka o potoloha le kutu ea valve ho fihlella ho buleha le ho koala. Valve ea polaka e na le sebopeho se bonolo, ho bula le ho koala ka potlako, ts'ebetso e bonolo, ho hanyetsa mokelikeli o monyane, likarolo tse fokolang, le boima bo bobebe. Li-valve tsa polaka li fumaneha ka mefuta e otlolohileng, e meraro, le e mene. Li-valve tsa polaka tse otlolohileng li sebelisoa ho khaola sehare, 'me li-valve tsa polaka tse tharo le tse 'ne li sebelisoa ho fetola tsela ea sehare kapa ho khelosa sehare.

2.6 Valve ea serurubele

Valve ea serurubele ke poleiti ea serurubele e potolohang ka 90° ho potoloha mothapo o tsitsitseng 'meleng oa valve ho phethela mosebetsi oa ho bula le ho koala. Valve ea serurubele e nyane ka boholo, e bobebe ka boima, e bonolo ka sebopeho, 'me e na le likarolo tse 'maloa feela.

'Me e ka buloa le ho koaloa kapele ka ho potoloha 90°, 'me ho bonolo ho e sebelisa. Ha valve ea serurubele e le boemong bo bulehileng ka botlalo, botenya ba poleiti ea serurubele ke eona feela khanyetso ha sehare se phalla ka har'a 'mele oa valve. Ka hona, ho theoha ha khatello ho hlahisoang ke valve ho honyenyane haholo, kahoo e na le litšobotsi tse ntle tsa taolo ea phallo. Li-valve tsa serurubele li arotsoe ka mefuta e 'meli ea ho tiisa: tiiso e bonolo e tenyetsehang le tiiso e thata ea tšepe. Bakeng sa li-valve tsa tiiso e tenyetsehang, lesale la ho tiisa le ka kenngoa 'meleng oa valve kapa la hokeloa moeling oa poleiti ea serurubele. E na le ts'ebetso e ntle ea ho tiisa 'me e ka sebelisoa bakeng sa ho thiba, hammoho le liphaephe tsa vacuum tse mahareng le mecha ea ho senya. Li-valve tse nang le litiiso tsa tšepe ka kakaretso li na le bophelo bo bolelele ba ts'ebeletso ho feta li-valve tse nang le litiiso tsa elastic, empa ho thata ho fihlela ho tiisa ka botlalo. Hangata li sebelisoa maemong ao ho theoha ha phallo le khatello ho fapaneng haholo 'me ts'ebetso e ntle ea ho thiba e hlokahala. Litiiso tsa tšepe li ka ikamahanya le mocheso o phahameng oa ts'ebetso, ha litiiso tsa elastic li na le sekoli sa ho fokotsoa ke mocheso.

2.7 Valve ea ho hlahloba

Valve ea ho hlahloba ke valve e ka thibelang phallo ea metsi ka bohona. Diski ea valve ea valve ea ho hlahloba e buleha tlas'a ts'ebetso ea khatello ea metsi, 'me mokelikeli o phalla ho tloha lehlakoreng la ho kena ho ea lehlakoreng la ho tsoa. ​​Ha khatello lehlakoreng la ho kena e le tlase ho feta lehlakoreng la ho tsoa, ​​​​diski ea valve e koala ka bohona tlas'a ts'ebetso ea lintlha tse kang phapang ea khatello ea metsi le matla a eona a khoheli ho thibela phallo ea metsi ho khutla. Ho ea ka sebopeho sa sebopeho, e arotsoe ka valve ea ho hlahloba ea ho phahamisa le valve ea ho hlahloba ea ho sisinyeha. Valve ea ho hlahloba ea ho phahamisa e na le tiiso e betere ho feta valve ea ho hlahloba ea ho sisinyeha le khanyetso e kholo ea mokelikeli. Bakeng sa kou ea ho hula ea phaephe ea ho hula ea pompo, valve ea maoto e lokela ho khethoa. Mosebetsi oa eona ke: ho tlatsa phaephe ea ho kena ea pompo ka metsi pele o qala pompo; ho boloka phaephe ea ho kena le 'mele oa pompo o tletse metsi kamora ho emisa pompo ho itokisetsa ho qala bocha. Valve ea maoto hangata e kenngoa feela phaepheng e otlolohileng ho pompo ea ho kena, 'me seaplane se phalla ho tloha tlase ho ea holimo.

2.8 Valve ea diaphragm

Karolo e bulang le e kwalang ya valve ya diaphragm ke diaphragm ya rabara, e pakeng tsa mmele wa valve le sekoahelo sa valve.

Karolo e hlahelletseng ea diaphragm e tsitsitse kutung ea valve, 'me' mele oa valve o koahetsoe ka rabara. Kaha sehatsetsi ha se kene ka hare ho sekoahelo sa valve, kutu ea valve ha e hloke lebokose la ho tlatsa. Valve ea diaphragm e na le sebopeho se bonolo, ts'ebetso e ntle ea ho koala, tlhokomelo e bonolo, le khanyetso e tlase ea mokelikeli. Li-valve tsa diaphragm li arotsoe ka mofuta oa weir, mofuta o otlolohileng, mofuta oa angle e nepahetseng le mofuta oa hona joale o tobileng.

3 Litaelo tse tloaelehileng tsa khetho ea li-valve

3.1 Litaelo tsa khetho ea li-valve tsa heke

Ka kakaretso, li-valve tsa heke li lokela ho khethoa pele. Ntle le mouoane, oli le mecha e meng ea phatlalatso, li-valve tsa heke li boetse li loketse mecha e nang le lintho tse tiileng tse nang le granular le viscosity e phahameng, 'me li loketse li-valve bakeng sa ho ntša moea le litsamaiso tse tlase tsa vacuum. Bakeng sa mecha e nang le likaroloana tse tiileng, 'mele oa valve ea heke o lokela ho ba le lesoba le le leng kapa a mabeli a ho hloekisa. Bakeng sa mecha e nang le mocheso o tlase, valve e khethehileng ea heke e lokela ho khethoa.

3.2 Litaelo tsa khetho ea valve ea ho emisa

Valve ea ho emisa e loketse liphaephe tse nang le litlhoko tse tlase tsa ho hanyetsa mokelikeli, ke hore, tahlehelo ea khatello ha e nahaneloe haholo, hammoho le liphaephe kapa lisebelisoa tse nang le mecha ea phatlalatso ea mocheso o phahameng le khatello e phahameng. E loketse liphaephe tsa mouoane le tse ling tsa mecha ea phatlalatso tse nang le DN < 200mm; li-valve tse nyane li ka sebelisa li-valve tsa ho emisa, joalo ka li-valve tsa nale, li-valve tsa lisebelisoa, li-valve tsa sampole, li-valve tsa gauge ea khatello, jj.; li-valve tsa ho emisa li na le taolo ea phallo kapa taolo ea khatello, empa ho nepahala ha taolo ha ho holimo, 'me bophara ba phaephe bo bonyenyane, kahoo li-valve tsa ho emisa kapa li-throttle li lokela ho khethoa; bakeng sa mecha ea phatlalatso e chefo haholo, li-valve tsa ho emisa tse koetsoeng ka bellows li lokela ho khethoa; empa li-valve tsa ho emisa ha lia lokela ho sebelisoa bakeng sa mecha ea phatlalatso e nang le viscosity e phahameng le mecha ea phatlalatso e nang le likaroloana tse bonolo ho li potlaka, ebile ha lia lokela ho sebelisoa e le li-valve tsa moea le li-valve bakeng sa litsamaiso tse tlase tsa vacuum.

3.3 Litaelo tsa khetho ea valve ea bolo

Li-valve tsa bolo li loketse mecha ea phatlalatso ea mocheso o tlase, khatello e phahameng, le ho teteana ho hoholo. Li-valve tse ngata tsa bolo li ka sebelisoa mecha ea phatlalatso e nang le likaroloana tse tiileng tse emisitsoeng, 'me li ka boela tsa sebelisoa bakeng sa mecha ea phatlalatso ea phofo le ea granular ho latela litlhoko tsa thepa ea tiiso; li-valve tsa bolo tsa kanale e felletseng ha lia lokela ho laola phallo, empa li loketse liketsahalo tse hlokang ho buloa le ho koaloa ka potlako, e leng se loketseng bakeng sa ho khaoloa ha tšohanyetso ha ho e-na le likotsi; li-valve tsa bolo hangata li khothaletsoa bakeng sa liphaephe tse nang le ts'ebetso e tiileng ea ho koala, ho tsofala, likanale tsa ho fokotseha, ho buloa le ho koaloa ka potlako, ho khaoloa ha khatello e phahameng (phapang e kholo ea khatello), lerata le tlase, ketsahalo ea khase, torque e nyane ea ts'ebetso, le khanyetso e nyane ea mokelikeli; li-valve tsa bolo li loketse meaho e bobebe, ho khaoloa ha khatello e tlase, le mecha ea phatlalatso e senyang; li-valve tsa bolo le tsona ke li-valve tse loketseng ka ho fetisisa bakeng sa mecha ea phatlalatso ea mocheso o tlase le e batang haholo. Bakeng sa litsamaiso tsa liphaephe le lisebelisoa tsa mecha ea phatlalatso ea mocheso o tlase, li-valve tsa bolo tsa mocheso o tlase tse nang le likoahelo tsa li-valve li lokela ho khethoa; ha ho sebelisoa li-valve tsa bolo tse phaphametseng, thepa ea setulo sa valve e lokela ho jara mojaro oa bolo le sebaka se sebetsang. Li-valve tsa bolo tse bophara bo boholo li hloka matla a maholo nakong ea ts'ebetso, 'me li-valve tsa bolo tsa DN≥200mm li lokela ho sebelisa phetiso ea lisebelisoa tsa seboko; li-valve tsa bolo tse tsitsitseng li loketse liketsahalo tse nang le bophara bo boholo le khatello e phahameng; ho phaella moo, li-valve tsa bolo tse sebelisoang bakeng sa liphaephe tsa thepa ea ts'ebetso e chefo haholo le mecha ea litaba e tukang li lokela ho ba le meaho e sa cheng le e sa sisinyeheng.

3.4 Litaelo tsa Khetho bakeng sa Throttle Valve

Li-valve tsa throttle li loketse liketsahalo tse nang le mocheso o mahareng o tlase le khatello e phahameng, 'me li loketse likarolo tse hlokang ho fetola phallo le khatello. Ha lia lokela mecha ea phatlalatso e nang le viscosity e phahameng le e nang le likaroloana tse tiileng, 'me ha lia lokela li-valve tse arohaneng.

3.5 Litaelo tsa Khetho bakeng sa Valve ea Plug

Li-valve tsa plug li loketse liketsahalo tse hlokang ho buloa le ho koaloa kapele. Ka kakaretso ha lia lokela bakeng sa mecha ea mouoane le ea mocheso o phahameng. Li sebelisoa bakeng sa mecha ea mocheso o tlase le ho teteana ho phahameng, 'me li boetse li loketse mecha ea mocheso e nang le likaroloana tse leketlileng.

3.6 Litaelo tsa Khetho bakeng sa Valve ea Serurubele

Li-valve tsa serurubele li loketse liketsahalo tse nang le bophara bo boholo (joalo ka DN﹥600mm) le litlhoko tsa bolelele bo bokhutšoanyane ba sebopeho, hammoho le liketsahalo tse hlokang taolo ea phallo le ho buloa le ho koaloa ka potlako. Hangata li sebelisoa bakeng sa mecha ea phatlalatso e kang metsi, oli le moea o hatelletsoeng ka mocheso oa ≤80℃ le khatello ea ≤1.0MPa; kaha li-valve tsa serurubele li na le tahlehelo e kholo ea khatello ha li bapisoa le li-valve tsa heke le li-valve tsa bolo, li-valve tsa serurubele li loketse litsamaiso tsa liphaephe tse nang le litlhoko tsa tahlehelo e fokolang ea khatello.

3.7 Litaelo tsa Khetho bakeng sa Valve ea ho Hlahloba

Li-valve tsa ho hlahloba ka kakaretso li loketse mecha ea phatlalatso e hloekileng, 'me ha lia lokela mecha ea phatlalatso e nang le likaroloana tse tiileng le viscosity e phahameng. Ha DN≤40mm, ho eletsoa ho sebelisa valve ea ho hlahloba ho phahamisa (e lumelloa feela ho kenngoa liphaepheng tse otlolohileng); ha DN＝50～400mm, ho eletsoa ho sebelisa valve ea ho hlahloba ho phahamisa ho potoloha (e ka kenngoa liphaepheng tse otlolohileng le tse otlolohileng. Haeba e kentsoe phaepheng e otlolohileng, tataiso ea phallo e mahareng e lokela ho ba ho tloha tlase ho ea holimo); ha DN≥450mm, ho eletsoa ho sebelisa valve ea ho hlahloba buffer; ha DN＝100～400mm, valve ea ho hlahloba ea wafer le eona e ka sebelisoa; valve ea ho hlahloba ho potoloha e ka etsoa khatello e phahameng haholo ea ho sebetsa, PN e ka fihla ho 42MPa, 'me e ka sebelisoa mecha ea phatlalatso efe kapa efe ea ho sebetsa le mocheso ofe kapa ofe oa ho sebetsa ho latela thepa e fapaneng ea khetla le litiiso. Mecha ea phatlalatso ke metsi, mouoane, khase, mecha ea phatlalatso e senyang, oli, meriana, jj. Mekhahlelo ea mocheso o mahareng oa ho sebetsa e pakeng tsa -196～800℃.

3.8 Litaelo tsa khetho ea valve ea diaphragm

Li-valve tsa diaphragm li loketse oli, metsi, asiti le media e nang le lintho tse emisitsoeng tse nang le mocheso o sebetsang o ka tlase ho 200℃ le khatello e ka tlase ho 1.0MPa, empa eseng bakeng sa li-solvent tsa tlhaho le li-oxidant tse matla. Li-valve tsa diaphragm tsa mofuta oa Weir li loketse media e nang le granular e khorofo. Tafole e bontšang phallo e lokela ho sebelisoa bakeng sa khetho ea li-valve tsa diaphragm tsa mofuta oa weir. Li-valve tsa diaphragm tse otlolohileng li loketse metsi a viscous, slurry ea samente le media ea sedimentary. Ntle le litlhoko tse itseng, li-valve tsa diaphragm ha lia lokela ho sebelisoa liphaepheng tsa vacuum le lisebelisoa tsa vacuum.