1. Khetha valve bakeng sa tšebeletso ea cryogenic
Ho khetha valve bakeng sa lits'ebetso tsa cryogenic ho ka ba thata haholo. Bareki ba tlameha ho nahana ka maemo a sekepeng le fekthering. Ho feta moo, thepa e khethehileng ea mokelikeli oa cryogenic e hloka ts'ebetso e khethehileng ea li-valve. Khetho e nepahetseng e tiisa ho ts'epahala ha semela, ts'ireletso ea lisebelisoa le ts'ebetso e bolokehileng. Mmaraka oa lefats'e oa LNG o sebelisa meralo e 'meli ea mantlha ea li-valve.
Mokhanni o tlameha ho fokotsa boholo ho boloka tanka ea khase ea tlhaho e le nyane kamoo ho ka khonehang. Ba etsa sena ka LNG (liquefied natural gas, liquefied natural gas). Ka ho pholile hoo e batlang e le khase ea tlhaho e fetoha mokelikeli. -165 ° C. Ka mocheso ona, valve e kholo ea ho itšehla thajana e ntse e tlameha ho sebetsa
2. Ke eng e amang moralo oa li-valve?
Mocheso o na le tšusumetso ea bohlokoa ho moralo oa valve. Mohlala, basebelisi ba ka e hloka bakeng sa libaka tse tsebahalang joalo ka Middle East. Kapa, e kanna ea tšoanela libaka tse batang joalo ka maoatle a polar. Libaka ka bobeli li ka ama ho tiea le ho tšoarella ha valve. Likarolo tsa li-valve tsena li kenyelletsa 'mele oa valve, bonnet, stem, stem seal, valve ea bolo le setulo sa valve. Ka lebaka la sebopeho se fapaneng sa thepa, likarolo tsena lia hola le ho hola ka mocheso o fapaneng.
Likhetho tsa kopo ea Cryogenic
Khetho ea 1:
Basebelisi ba sebelisa li-valve libakeng tse batang, joalo ka lisebelisoa tsa oli maoatleng a polar.
Khetho ea 2:
Basebelisi ba sebelisa li-valve ho laola maro a ka tlase ho leqhoa.
Tabeng ea likhase tse tukang haholo, tse kang khase ea tlhaho kapa oksijene, valve le eona e tlameha ho sebetsa ka nepo ha ho ka ba le mollo.
3.Khatello
Ho na le ho bokellana ha khatello nakong ea ho tšoara sehatsetsi ka mokhoa o tloaelehileng. Sena se bakoa ke mocheso o eketsehileng oa tikoloho le ho thehoa ha mouoane ka mor'a moo. Tlhokomelo e khethehileng e lokela ho nkoa ha ho etsoa moralo oa li-valve / piping system. Sena se lumella khatello hore e hahe.
4.Mocheso
Ho fetoha ha mocheso ka potlako ho ka ama polokeho ea basebetsi le lifeme. Ka lebaka la sebopeho se fapaneng sa thepa le bolelele ba nako eo li behiloeng ka tlas'a sehatsetsing, karolo e 'ngoe le e' ngoe ea valve ea cryogenic e atoloha le ho etsa likonteraka ka litefiso tse fapaneng.
Bothata bo bong bo boholo ha u tšoara lihatsetsi ke ho eketseha ha mocheso o tsoang tikolohong e potolohileng. Keketseho ena ea mocheso ke eona e etsang hore baetsi ba lihlahisoa ba arole li-valve le liphaephe
Ntle le mocheso o phahameng oa mocheso, valve e tlameha ho tobana le mathata a mangata. Bakeng sa liquefied helium, mocheso oa khase e qhibilihisitsoeng o theohela ho -270 ° C.
5.Mosebetsi
Ka lehlakoreng le leng, haeba mocheso o theohela ho zero ka ho feletseng, mosebetsi oa valve o ba thata haholo. Li-valve tsa cryogenic li kopanya liphaephe tse nang le likhase tse metsi ho tikoloho. E etsa sena ka mocheso oa tikoloho. Sephetho e ka ba phapang ea mocheso ho fihla ho 300 ° C lipakeng tsa phala le tikoloho.
6.Ho sebetsa hantle
Phapang ea mocheso e baka phallo ea mocheso ho tloha sebakeng se futhumetseng ho ea sebakeng se batang. E tla senya mosebetsi o tloaelehileng oa valve. E boetse e fokotsa ts'ebetso ea sistimi maemong a feteletseng. Sena se tšoenya haholo haeba leqhoa le hlaha karolong e futhumetseng.
Leha ho le joalo, lits'ebetsong tsa mocheso o tlase, mokhoa ona oa ho futhumatsa o sa sebetseng o boetse o etsoa ka boomo. Mokhoa ona o sebelisetsoa ho tiisa stem ea valve. Hangata, kutu ea valve e tiisitsoe ka polasetiki. Lisebelisoa tsena ha li khone ho mamella mocheso o tlaase, empa litiiso tsa tšepe tse phahameng tsa likarolo tse peli, tse tsamaeang haholo ka litsela tse fapaneng, li theko e boima haholo ebile li batla li le thata.
7. Ho tiisa
Ho na le tharollo e bonolo haholo bothateng bona! U tlisa polasetiki e sebelisetsoang ho koala kutu ea valve sebakeng seo mocheso o batlang o tloaelehile. Sena se bolela hore sekontiri sa kutu ea valve se tlameha ho bolokoa hole le mokelikeli.
8.Three offset rotary tight isolation valve
Li-offsets tsena li lumella valve ho bula le ho koala. Li na le likhohlano tse nyane haholo le likhohlano nakong ea ts'ebetso. E boetse e sebelisa torque ea stem ho etsa hore valve e be thata haholoanyane. E 'ngoe ea liqholotso tsa polokelo ea LNG ke likheo tse qabeletsoeng. Likheong tsena, mokelikeli o ka ruruha ho feta makhetlo a 600. Valofo e thata ea ho itšehla thajana e potolohang tse tharo e felisa phephetso ena.
9.Li-valve tsa tlhahlobo ea baffle e le 'ngoe le tse peli
Li-valve tsena ke karolo ea bohlokoa ea thepa ea mokelikeli hobane li thibela tšenyo e bakiloeng ke phallo e khutlang. Lintho tse bonahalang le boholo ke lintlha tsa bohlokoa hobane li-valve tsa cryogenic li theko e boima. Liphello tsa li-valve tse fosahetseng li ka ba kotsi.
Baenjiniere ba netefatsa joang hore li-valve tsa cryogenic li tiile?
Ho lutla ho bitsa chelete e ngata haholo ha motho a nahana ka litšenyehelo tsa ho qala ka ho etsa khase sehatsetsing. Hape ho kotsi.
Bothata bo boholo ka theknoloji ea cryogenic ke monyetla oa ho lutla ha setulo sa valve. Hangata bareki ba nyenyefatsa kholo ea radial le linear ea kutu mabapi le 'mele. Haeba bareki ba khetha valve e nepahetseng, ba ka qoba mathata a ka holimo.
Khamphani ea rona e khothaletsa ho sebelisa li-valve tsa mocheso o tlase tse entsoeng ka tšepe e sa hloekang. Nakong ea ts'ebetso ka khase e nang le liquefied, thepa e arabela hantle ho li-gradients tsa mocheso. Li-valve tsa cryogenic li lokela ho sebelisa lisebelisoa tse loketseng tsa ho tiisa ka thata ho fihla ho 100 bar. Ho phaella moo, ho atolosa bonnet ke tšobotsi ea bohlokoa haholo hobane e khetholla ho tiea ha stem sealant.
Nako ea poso: May-13-2020