Tsebo ea mantlha ea ho kenya li-valve tsa tlhokomelo ea li-valve e tlameha ho ela hloko litaba le lintlha

Tsebo ea motheo ea ho kenya li-valve tsa tlhokomelo ea li-valve e tlameha ho ela hloko litaba le lintlha Hona joale, litekanyetso tsa tekheniki tsa valve tse hlahisoang lefatšeng, tekanyo ea lemati e nyenyane ho 1 mm ho ea ho 9750 mm; Likhatello tsa ts'ebetso ea li-valve li tloha ho ultra-high vacuum 1 x10-10 MMHG ho ea ho ultra-high 14,600 atmospheres. Lithempereichara tse sebetsang tsa valve li tloha ho -270 ℃ ho isa ho mocheso o phahameng haholo oa 1200 ℃ esita le ho 3430 ℃. Velove medium velocity makhetlo a 11 lebelo la supersonic; Valve nako ea ho bula le ho koala metsotsoana ea 1/1000 ~ 5, ho lutla ha valve ho 1 x10-10CC / motsotsoana, ho bolelang sebaka sa ho lutla lilemo tse 300 hamorao ho feta 1 CC. Tlhahiso e felletseng ea lefats'e ea li-valve tekheniki, tekanyo ea lemati ho tloha ho tse nyane ho isa ho 1 mm ho isa ho 9750 mm; Likhatello tsa ts'ebetso ea li-valve li tloha ho ultra-high vacuum 1 x10-10 MMHG ho ea ho ultra-high 14,600 atmospheres. Lithempereichara tse sebetsang tsa valve li tloha ho -270 ℃ ho isa ho mocheso o phahameng haholo oa 1200 ℃ esita le ho 3430 ℃. Velove medium velocity makhetlo a 11 lebelo la supersonic; Valve nako ea ho bula le ho koala metsotsoana ea 1/1000 ~ 5, ho lutla ha valve ho 1 x10-10CC / motsotsoana, ho bolelang sebaka sa ho lutla lilemo tse 300 hamorao ho feta 1 CC. Mehlala e ka holimo, ka boiteko ba batho, ho tla ba le likhatelopele. Tse latelang ke bophara ba lebitso la valve, khatello ea lebitso, kamano pakeng tsa khatello ea ho sebetsa le mocheso o sebetsang, le mokhoa o tloaelehileng oa valve. Mekhahlelo e meng ea mantlha e na le sekala sa naha le sa tona. Bophahamo ba lebitso la sebaka sa ho kena le ho tsoa ha valve ho bitsoa bophara ba lebitso la valve. E emetsoe ke Dg (tekanyetso ea naha ea Dn bakeng sa teko), ka limilimithara (mm). Bophahamo ba lebitso la valve bo hlalositsoe ho standard standard GB1074-70. Letoto la bophara ba li-valve le bonts'itsoe ho Lethathamo la 1-1. Tlas'a maemo a tloaelehileng, bophara ba lebitso la valve bo lumellana le bophara ba sebele. Ho na le ts'ebetso ea hore bophara ba lebitso ha bo lumellane le bophara ba sebele ba valve ea cast e sebelisoang indastering ea lik'hemik'hale tse phahameng le petroleum. Khatello ea lebitso la valve e bitsoa khatello ea lebitso la valve. E hlalosoa ke Pg (tekanyetso ea naha e hlalosoa ke PN, khatello ea khatello ke bar), 'me sehlopha ke matla a lik'hilograma / cm2 (kgf / cm2). Haeba Pg16 e tšoauoa holim'a valve, khatello ea lebitso la valve ke matla a 16 kg / cm 2. Khatello ea lebitso la valve e hlalosoa ka mokhoa oa naha oa GB1048-70. Letoto la khatello ea lebitso la li-valve li bonts'oa ho Lethathamo la 1-2. Matla a sebele a khatello ea valve hangata a kholoanyane ho feta khatello ea lebitso la valve, e etselitsoeng ho nahana ka ntlha ea tšireletso. Tekong ea khatello ea matla ea valve, ho ea ka moeli o tšepisitsoeng ho feta khatello ea lebitso, sebakeng sa ho sebetsa sa valve, e arotsoe ka thata holim'a mosebetsi oa khatello, hangata e khetha ka tlaase ho tekanyo ea khatello ea lebitso. Boraro, kamano pakeng tsa khatello ea ho sebetsa ea valve le mocheso o sebetsang oa valve sebakeng sa ho sebetsa sa khatello e bitsoa khatello ea ho sebetsa ea valve, e amanang le thepa le mocheso o sebetsang oa bohareng ba valve. . E hlalosoa ke P, setšoantšo se hukung e ka tlase ho le letona la lentsoe la P ke mocheso o mahareng o batlang o le holimo o arotsoe ke 10 quotient integer. Ka mohlala, P42 e bontša khatello ea ho sebetsa ea valve medium ka mocheso o batlang o le holimo oa 425 ℃. Mocheso oa ho sebetsa oa valve le tafole e tsamaisanang le khatello e phahameng ea ho sebetsa e bitsoang tafole ea mocheso le khatello. Sheba Letlapa la 1-3, 4, 5. Mohlala oa kopo: matla a 40kg / cm 2 carbon steel valve ka mocheso o sebetsang oa 425 ℃ holim'a pipeline, khatello ea eona e phahameng ea ho sebetsa ke bokae ba pele ba tšeletseng ba tsoang tafoleng 1- 3 carbon steel column, fumana mocheso o sebetsang oa 425 ℃ marang-rang ho sheba fatše, ebe o hlahloba mohala oa khatello ea 40 kg / cm 2 grid ho sheba fatše, Nomoro e mateanong a likarolo tse peli ke khatello e kholo ea ts'ebetso ea valve ena ea carbon steel P4222 kg matla / cm 2 Mokhoa o tloaelehileng oa valve ke ntho e lokelang ho nkoa ka moralo le khetho ea valve. Mokhoa oa ho utloisisa "seaplane se tloaelehileng sa valve" ka kopo bala sampole ea li-valve le buka ea anti-corrosion hammoho le ts'ebeliso le tlhokomelo ea li-valve Tsebo: Ho kengoa ha valve ho tlameha ho ela hloko litaba le lintlha tsa boemo ba ho kenya li-valve, bonolo ho sebetsa: esita le haeba ho hlongoa mathata a nakoana, empa hape le ho laola mosebetsi oa nako e telele oa basebetsi. Ho molemo hore lebili la letsoho la valve le tsamaisane le sefuba (ka kakaretso ke limithara tse 1,2 ho tloha mokatong o sebetsang), e le hore ho be bonolo ho bula le ho koala valve. Ground valve handwheel e lokela ho ba holimo, u se ke ua sekamela, e le hore e se ke ea sebetsa ka mokhoa o sa tsitsang. Mochine oa lerako o itšetlehile ka valve ea lisebelisoa, empa hape u siee sebaka sa hore opereishene a eme. Pele ho kenngoa, valve e lokela ho hlahlojoa ho hlahloba litlhaloso le mofuta le ho tseba hore na ho na le tšenyo leha e le efe, haholo-holo bakeng sa kutu ea valve. Boleng ba ho kenya li-valve bo ama ka ho toba tšebeliso, kahoo re tlameha ho e ela hloko e le kannete. (1) Tataiso le boemo Li-valve tse ngata li na le tataiso, joalo ka li-valve tsa globe, li-valve tsa throttle, li-valve tse fokotsang, li-valve tsa ho hlahloba, joalo-joalo, haeba li inverted, li tla ama ts'ebeliso le bophelo (joalo ka li-valve tsa throttle), kapa u se ke ua etsa joalo. sebetsa (joalo ka ho fokotsa li-valve), esita le ho baka kotsi (joalo ka li-valve tsa cheke). Sephahla se akaretsang, letšoao la tataiso holim'a 'mele oa valve; Haeba ho se joalo, e lokela ho ba ho ea ka molao-motheo o sebetsang oa valve, boitsebiso bo nepahetseng. Kamore ea li-valve tsa valve ea lefats'e e fosahetse ho bolela hore mokelikeli o lokela ho tloheloa ho tloha tlase ho ea holimo ka koung ea valve, e le hore ho hanyetsa ha metsi ho fokotsehe (ho khethoa ke sebōpeho), ho bula matla a ho boloka matla (ka lebaka la khatello e bohareng. holimo), sebaka se koetsoeng ha se hatelle ho paka, ho bonolo ho lekoa, ke ka lebaka leo valve ea lefats'e e sa khoneng ho khelosoa. Li-valve tse ling le tsona li na le litšobotsi tsa tsona. Sebaka sa ho kenya li-valve, se tlameha ho ba bonolo ho sebetsa: le haeba ho kenngoa ha mathata a nakoana, empa hape ho laola mosebetsi oa nako e telele oa basebetsi. Ho molemo hore lebili la letsoho la valve le tsamaisane le sefuba (ka kakaretso ke limithara tse 1,2 ho tloha mokatong o sebetsang), e le hore ho be bonolo ho bula le ho koala valve. Ground valve handwheel e lokela ho ba holimo, u se ke ua sekamela, e le hore e se ke ea sebetsa ka mokhoa o sa tsitsang. Mochine oa lerako o itšetlehile ka valve ea lisebelisoa, empa hape u siee sebaka sa hore opereishene a eme. Ho qoba ho qhekella holimo, haholo-holo acid le alkali, mecha ea litaba e chefo, ho seng joalo ha e bolokehe. Se ke oa phethola heke (ke hore, lebili la letsoho le theoha), ho seng joalo sehare se tla bolokoa sebakeng sa bonnet nako e telele, khoholeho e bonolo ea kutu, 'me bakeng sa litlhoko tse ling tsa ts'ebetso li hanyetsanoa. Ka nako e ts'oanang, ho nkela filler sebaka ha ho monate haholo. Bula valve ea heke ea stem, u se ke ua kenya ka tlas'a lefatše, ho seng joalo ka lebaka la ho koloba le khoholeho ea mobu e pepesehileng. Phahamisa phunya phunyang, tlhomamiso ho etsa bonnete ba hore disc paatsepama, e le hore ho phahamisa tenyetsehang. Swing hlahloba li-valve, ha hlomamisa ho etsa bonnete ba hore boemo ba Pin, e le hore feto-fetoha swing. Valofo e fokotsang e lokela ho hlongoa phala e tšekaletseng, 'me u se ke ua sekamela ka tsela efe kapa efe. (2) mosebetsi oa sekolo oa kaho Ho kenya le ho haha ​​ho tlameha ho ba hlokolosi, u se ke ua otla valve e entsoeng ka thepa ea brittle. Pele ho kenngoa, valve e lokela ho hlahlojoa ho hlahloba litlhaloso le mofuta le ho tseba hore na ho na le tšenyo leha e le efe, haholo-holo bakeng sa kutu ea valve. Hape, phutha makhetlo a 'maloa ho bona hore na e khelohile, hobane nakong ea lipalangoang, ho bonolo ho otla kutu e khopameng ea valve. Hape tlosa litšila ka valve. Ha u phahamisa valve, thapo ha ea lokela ho tlamelloa ka letsoho kapa stem ho qoba tšenyo ea likarolo tsena, e lokela ho tlamelloa ho flange. Bakeng sa li-valve tse hokahaneng le pipeline, etsa bonnete ba hore u li hloekisa. Moea o hatelitsoeng o ka sebelisoa ho phethola tšepe ea oxide ea tšepe, lehlabathe, slag ea welding le litšila tse ling. Tsena sundries, eseng feela habonolo scrape ho tiisa holim'a belofo, eo har'a eona likaroloana tse khōlō tsa sundries (tse kang tjheseletsa slag), empa hape plug belofo nyenyane, e le hore e hloleha. Ha o kenya valve ea screw, ho paka ho tiisa (hemp le oli ea aluminium kapa polytetrafluoroethylene raw material lebanta) e lokela ho phutheloa holim'a khoele ea pipe, e se ke ea kena ka har'a valve, e le ho qoba sehlahisoa sa mohopolo oa valve, se amang phallo e boreleli ea bohareng. . Ha u kenya li-valve tse nang le flanged, ela hloko ho tiisa liboutu ka mokhoa o ts'oanang le ka ho lekana. Li-valve flange le liphaephe li tlameha ho ba tse tšoanang, ho hlaka ho lekaneng, e le ho qoba khatello e feteletseng esita le ho phunyeha ha valve. Bakeng sa lisebelisoa tse brittle le li-valve tsa matla a tlaase, haholo-holo ela hloko. Li-valve tse lokelang ho chesetsoa ka liphaephe li lokela ho ts'oaroa ka letheba pele, ebe likarolo tsa ho tiisa li lokela ho buloa ka botlalo, ebe li chesetsoa li shoele. (3) Mehato ea ts'ireletso Li-valve tse ling le tsona li tlameha ho ba le tšireletso e kantle, e leng ho pata le ho tsidifala. Ka linako tse ling ho kenyeletsoa lithapo tsa mouoane tse chesang. Ke mofuta ofe oa valve o lokelang ho ba insulated kapa ho bata, ho latela litlhoko tsa tlhahiso. Ha e le hantle, moo sehare se ka har'a valve ho fokotsa mocheso haholo, se tla ama katleho ea tlhahiso kapa valve e leqhoa, ho hlokahala hore u boloke mocheso, kapa esita le ho kopanya mocheso; Ha li-valve li pepesehile, li le mpe ho hlahisa kapa li baka serame le lintho tse ling tse mpe, hoa hlokahala ho boloka serame. Lisebelisoa tsa insulation ke asbestos, boea ba slag, boea ba khalase, perlite, diatomite, vermiculite, joalo-joalo; Lisebelisoa tse pholileng li kenyelletsa kork, perlite, foam, polasetiki joalo-joalo. (4) Bypass le sesebelisoa Li-valve tse ling, ntle le mehato e hlokahalang ea tšireletso, li boetse li na le bypass le lisebelisoa. Ho ile ha kenngoa tsela e pota-potileng. E bonolo bakeng sa ho hlahloba leraba. Li-valve tse ling, le tsona li kentsoe ke bypass. Hore na ho kenya bypass, ho itšetlehile ka boemo ba valve, bohlokoa le litlhoko tsa tlhahiso. (5) packing replacement Inventory valve, ba bang ba paka ha ba molemo, ba bang ka tšebeliso ea mecha ea litaba ha e lumellane, sena se hloka ho fetola ho paka. Baetsi ba li-valve ba ke ke ba nahana ka tšebeliso ea li-unit tse likete tsa mecha ea litaba e fapaneng, lebokose la stuffing le lula le tletse motso o tloaelehileng, empa ha o sebelisoa, hoa hlokahala ho etsa hore filler e ikamahanye le seaplane. Ha u nkela sebaka sa ho tlatsa, tobetsa ho pota ka ho pota. Sekhahla se seng le se seng sa selikalikoe ho isa ho likhato tse 45 se nepahetse, se lekane 'me se bulele likhato tse 180. Bophahamo ba ho paka bo lokela ho nahanela kamore ea hore tšoelesa e rue ho hatella. Hajoale, karolo e ka tlase ea tšoelesa e lokela ho lumelloa ho hatella phaposi ea ho paka ka botebo bo loketseng, boo ka kakaretso e ka bang 10-20% ea botebo bohle ba kamore ea ho paka. Bakeng sa li-valve tsa tlhoko e phahameng, Angle e kopaneng ke likhato tse 30. Seam pakeng tsa mehele e thekesela ka likhato tse 120. Ho phaella ho li-fillers tse ka holimo, empa hape ho ea ka lintlha tse qaqileng, tšebeliso ea rabara O-ring (ho hanyetsa rabara ea tlhaho ka tlase ho likhato tse 60 tsa Celsius e fokolang alkali, butadiene ho hanyetsa likristale tsa oli ka tlase ho likhato tse 80 tsa oli, ho hanyetsa rabara ea Fluorine ka tlase ho likhato tse 150 tsa Celsius a mefuta e fapaneng ya khoholeho mecha ea litaba) likotoana tse tharo stacked polytetrafluoroethylene lesale (ho hanyetsa ka tlaase ho likhato 200 Celsius matla khoholeho mecha ea litaba) lesale la nylon sekotlolo (ho hanyetsa ka tlase 120 likhato Celsius ammonia, alkali) le tse ling tse ho etsa filler. Lera la theipi e tala ea polytetrafluoroethylene e phuthetsoe ka ntle ho diski e tloaelehileng ea asbestos, e ka ntlafatsang phello ea ho tiisa le ho fokotsa khoholeho ea electrochemical ea stem ea valve. Ha u tobetsa seasoning, roala kutu ea valve ka nako e le 'ngoe ho boloka karolelano e potolohileng, le ho thibela ho shoa haholo, tiisa tšoelesa hore e be matla ka karolelano, eseng ho sekamela.