Selelekela ho li-valve tsa Pressure Seal
Li-valve tsa Tiiso ea Khatello
Kaho ea tiiso ea khatello e amoheloa bakeng sa li-Valves bakeng sa ts'ebeletso ea khatello e phahameng, hangata e fetang 170 bar. Tšobotsi e ikhethang mabapi le tiiso ea khatello ea Bonnet ke hore litiiso tsa 'mele-Bonnet manonyeletso li ntlafala ha khatello ea ka hare ea Valve e ntse e eketseha, ha e bapisoa le mehaho e meng moo ho eketseha ha khatello ea ka hare ho atisang ho hlahisa ho lutla ha motsoako oa' mele-Bonnet.
Moralo oa tiiso ea khatello
- A/B - Tloaelo ea bonnet ea ho ea holimo kapa tlase ha khatello e fetoha
- C - Khatello ea tsamaiso
- D - Ho tiisa matla ka lebaka la khatello
Ha khatello ea ka hare e phahame, matla a ho tiisa a maholoanyane. Ho qhaqha habonolo ho khoneha ka ho theola kopano ea Bonnet ka har'a 'mele oa' mele le ho leleka mehele ea likarolo tse 'nè ka pini.
E ipapisitse le melao-motheo e bonolo ea moralo, li-valve tsa tiiso ea khatello li pakile bokhoni ba tsona ba ho sebetsana le lits'ebetso tse ntseng li batloa le ho itšehla thajana tsa mouoane, ha baqapi ba ntse ba tsoela pele ho sututsa boiler, HRSG, le liphaephe tsa khatello / mocheso oa mocheso. Li-valve tsa tiiso ea khatello hangata li fumaneha ka boholo ba lisenthimithara tse 2 ho isa ho tse 24 le lihlopha tsa khatello tsa ASME B16.34 ho tloha ho #600 ho ea ho #2500, le hoja bahlahisi ba bang ba ka amohela tlhokahalo ea li-diameter tse kholoanyane le litekanyetso tse phahameng bakeng sa lisebelisoa tse khethehileng.
Li-valve tsa tiiso ea khatello li fumaneha ka litšobotsi tse ngata tse kang A105 forged le Gr.WCB cast, alloy F22 forged le Gr.WC9 cast; F11 forged le Gr.WC6 cast, austenitic stainless F316 forged le Gr.CF8M cast; bakeng sa ho feta 500 ° C, F316H ea maiketsetso le limaraka tse loketseng tsa austenitic cast.
Mohopolo oa moralo oa tiiso ea khatello o ka saloa morao ho tloha bohareng ba lilemo tsa bo-1900, ha, ba tobane le likhatello le lithempereichara tse ntseng li eketseha (haholo-holo ts'ebetsong ea matla), baetsi ba li-valve ba ile ba qala ho rala mekhoa e meng ho latela mokhoa o tloaelehileng oa Bonnet oa ho tiisa 'mele / motsoako oa Bonnet. . Hammoho le ho fana ka boemo bo holimo ba ho tiea ha moeli oa khatello, meralo e mengata ea li-Valve tsa khatello e ne e le boima bo tlase haholo ho feta balekane ba bona ba bolt ea Bonnet Valve.
Bolted Bonnets vs. Pressure Seals
Ho utloisisa hamolemo mohopolo oa moralo oa tiiso ea khatello, ha re bapiseng mokhoa oa ho tiisa 'mele ho ea ho Bonnet lipakeng tsa Libonete tse boltsitsoeng le litiiso tsa khatello.Setšoantšo sa 1e bonts'a valve e tloaelehileng ea Bolted Bonnet. 'Mele oa Flange le Bonnet flange li kopantsoe ke lithupa le linate, ka gasket ea moralo / thepa e loketseng e kentsoeng pakeng tsa lifahleho tsa flange ho thusa ho tiisa. Li-stud / linate / liboutu li tiisitsoe ho li-torque tse laetsoeng ka mokhoa o hlalositsoeng ke moetsi ho ama ho tiisoa hantle. Leha ho le joalo, ha khatello ea tsamaiso e ntse e eketseha, monyetla oa ho lutla ka 'mele / motsoako oa Bonnet o boetse oa eketseha.
Joale a re shebeng motsoako oa tiiso ea khatello e hlalositsoeng ka botlaloSetšoantšo sa 2Ela hloko ho se tšoane ha 'mele o fapaneng / litlhophiso tsa kopanelo ea Bonnet. Bongata ba meralo ea tiiso ea khatello e kenyelletsa "Bonnet take-up bolts" ho hula Bonnet le ho tiisa khahlano le gasket e tiisang khatello. Sena le sona se etsa tiiso pakeng tsa gasket le dia e ka hare (ID) ea 'mele oa valve.
Segmented thrustring e boloka mojaro. Botle ba moralo oa tiiso ea khatello ke hore ha khatello ea tsamaiso e ntse e eketseha, ho joalo le ka mojaro oa Bonnet, 'me ka ho tšoanang, gasket ea tiiso ea khatello. Ka hona, ka khatello ea li-Valves, ha khatello ea tsamaiso e ntse e eketseha, monyetla oa ho lutla ka 'mele / motsoako oa Bonnet oa fokotseha.
Mokhoa ona oa moralo o na le melemo e ikhethang ho feta li-valve tsa Bonnet tse kentsoeng ka liboutung tse ka har'a mouoane o moholo, metsi a phepelo, li-turbine bypass, le lits'ebetso tse ling tsa polante ea motlakase tse hlokang Li-Valves tse ka sebetsanang le liqholotso tse hlahang ts'ebelisong ea khatello e phahameng le mocheso.
Empa ha lilemo li ntse li feta, ha likhatello/lithempereichara tsa ts'ebetso li ntse li eketseha, 'me ka ho fihla ha limela tse ntseng li phahama, khatello eona ena ea nakoana ea tsamaiso ea nakoana e thusitseng ho tiisa le eona e ile ea baka tšenyo ka botšepehi ba kopanelo ea tiiso.
Khatello Seal Gaskets
E 'ngoe ea likarolo tse ka sehloohong tse amehang ho tiisa tiiso ea khatello ea Valve ke gasket ka boeona. Li-gaskets tse tiisang khatello ea pele li ne li etsoa ka tšepe kapa tšepe e bonolo. Ka mor'a moo, li-gaskets li ne li entsoe ka silevera ho nka monyetla ka bokhoni ba lisebelisoa tse bonolo tsa ho fana ka tiiso e tiileng. Ka lebaka la khatello e sebelisoang nakong ea hydrotest ea Valve, "set" (kapa deformation ea profil ea gasket) pakeng tsa Bonnet le gasket e nkiloe. Ka lebaka la tlhaho ea Bonnet ea ho nka bolt le khatello ea lenonyeletso le elasticity, monyetla oa hore Bonnet e tsamaee le ho senya "sete" eo ha e le tlas'a khatello ea tsamaiso e ile ea eketseha / ea fokotseha e ne e le teng, 'me lenonyeletso la 'mele / Bonnet le lutla sephetho.
Bothata bona bo ka qheleloa ka thoko ka ho sebelisa mokhoa oa "ho chesa" liboutu tsa ho nka Bonnet kamora khatello ea sistimi le tekano ea mocheso, empa ho ne ho hloka hore beng ba tlhokomelo ea mosebelisi ba etse joalo kamora ho qala semela. Haeba mokhoa ona o ne o sa lateloe, monyetla oa ho lutla ka 'mele / motsoako oa Bonnet o ne o le teng, o neng o ka senya gasket ea tiiso ea khatello, Bonnet le / kapa ID ea 'mele oa Valve, hammoho le ho baka mathata a mangata le ho se sebetse hoo ho lutla ha mouoane ho ka ba le ts'ebetso ea semela. Ka lebaka leo, baqapi ba Valve ba ile ba nka mehato e 'maloa ho rarolla bothata bona.
Setšoantšo sa 2 se bonts'a motsoako oa liboutu tse nkehang tsa Bonnet (ka hona ho boloka mojaro o sa khaotseng holim'a gasket, ho fokotsa monyetla oa ho lutla) le ho nkela sebaka sa tšepe / tšepe e bonolo, e entsoeng ka tšepe e entsoeng ka tšepe e entsoeng ka tšepe e nang le silevera e nang le tšepe e entsoeng ka die- graphite e entsoeng. Moralo oa gasket o bontšitsoeng ho Setšoantšo sa 3 o ka kenngoa ka har'a tiiso ea khatello Li-Valves tse neng li fanoe ka mofuta oa gasket oa setso. Ho fihla ha graphite gaskets ho tiisitse le ho feta ho ts'epahala le ts'ebetso ea Valve ea tiiso ea khatello lits'ebetsong tse ngata esita le bakeng sa potoloho ea letsatsi le letsatsi ea ho qala / ho emisa.
Leha bahlahisi ba bangata ba ntse ba khothaletsa "hot torquing," monyetla oa ho lutla ha sena se sa etsoe o fokotsehile haholo. Libaka tsa litulo ka har'a tiiso ea khatello Li-Valves, joalo ka li-Valves tse ngata tsa matla, li tlas'a, ha ho bapisoa, li na le meroalo e phahameng haholo ea litulo. Botšepehi ba litulo bo bolokoa e le ts'ebetso ea mamello e tiileng ea machining likarolong tsa likarolo, mokhoa oa ho fana ka torque e hlokahalang ho bula / ho koala joalo ka ts'ebetso ea likere kapa ts'ebetso, le khetho / ts'ebeliso ea lisebelisoa tse nepahetseng bakeng sa libaka tsa litulo.
Cobalt, nickel, le li-alloys tse thata tse thehiloeng ka tšepe li sebelisoa bakeng sa ho hanyetsa ka mokhoa o nepahetseng oa wedge / disc le libaka tsa litulo tsa setulo. Tse sebelisoang haholo ke lisebelisoa tsa CoCr-A (mohlala, Stellite). Lisebelisoa tsena li sebelisoa ka mekhoa e fapaneng, ho kenyelletsa le arc ea tšepe e sirelelitsoeng, arc ea tšepe ea khase, arc ea tungsten ea khase, le plasma (e fetisitsoeng) arc. Li-valve tse ngata tsa khatello ea Globe li etselitsoe hore li be le litulo tse thata, athe Gate Valve le Check Valves hangata li na le mehele ea setulo e thata e kentsoeng 'meleng oa Valve.
Tlhaloso ea mantsoe
Haeba u kile ua sebetsana le li-valve ka nako e telele, mohlomong u hlokometse hore baetsi ba li-valve ha ba na boqapi bo feteletseng ka mantsoe le lipuo tse sebelisoang khoebong. Nka mohlala, "Li-valve tsa Bonnet tse koetsoeng." 'Mele o tlameletsoe ho Bonnet ho boloka botšepehi ba tsamaiso. Bakeng sa "li-valve tsa tiiso ea khatello," khatello ea sistimi e thusa mochini oa ho tiisa. Bakeng sa "Stop / Check Valves," ha kutu ea Valve e le sebakeng se koetsoeng, phallo e emisoa ka mochini, empa ha e le sebakeng se bulehileng, disc e lokolohile ho nka khato ho lekola phetoho ea phallo. Molao-motheo ona o sebetsa ho mantsoe a mang a sebelisetsoang moralo, hammoho le mefuta ea Li-valve le likarolo tsa eona.
Nako ea poso: May-11-2020