Valve ea Phomolo ea Khatello ke eng - Sesebelisoa sa Polokeho se Hlalositsoe

Valve ea Phomolo ea Khatello ke eng?

Valve ea ho Fokotsa Khatello (PRV) ke sesebelisoa sa polokeho se iketsang se etselitsoeng ho sireletsa litsamaiso tse koetsoeng, lisebelisoa le liphaephe tšenyong e bakoang ke khatello e feteletseng. E entsoe ka liliba tse leka-lekaneng le likarolo tsa taolo ea hydraulic. Ha khatello ea sistimi e fihla moeling o behiloeng esale pele oa valve, valve e qala ho sebetsa ho lokolla khatello e feteletseng.

Valve ea Khatello ea Khatello e Sebetsa Joang?

Ha kgatello ya mouoane ka tlasa diski ya valve e feta matla a ho hatella a selemo, diski e a phahama. Ha e bulwa, mouoane o ntshitsweng o sebetsa kgahlanong le lesale la ho tshwara diski ka matla a karabelo a lesale le ka tlase la ho lokisa, e leng se bakang ho buleha ka potlako ka botlalo. Ha diski e ntse e nyoloha, mouoane o ama lesale le ka hodimo la ho lokisa, o lebisa phallo e otlolohileng tlase. Kgatello e hlahang e sutumelletsa diski hodimo, e boloka bophahamo bo lekaneng ba ho phahamisa kahare ho sebaka se itseng sa kgatello. Ha matlwana a kgatello a ntse a phahama, kgatello ya sistimi e fokotseha butle-butle. Matla a selemo ebe a hlola kgatello ya mouoane le kgatello e arabelang, a kwala valafo ka mokhoa o sireletsehileng.

Mosebetsi oa Valve ea Phomolo: Morero oa Bohlokoa le Bohlokoa

Mosebetsi o ka sehloohong oa Valve ea Phokotso ea Khatello (eo hangata e bitsoang Valve ea Polokeho) ke ho thibela khatello e feteletseng libakeng tse nang le khatello e phahameng ea sistimi, ho sireletsa botšepehi ba lisebelisoa. Ka ho laola khatello ka boikemelo, li-PRV li ntša mokelikeli hang ha khatello e kholo e fihletsoe, li boloka khatello ea ts'ebetso ka har'a meeli e sireletsehileng. Sena se netefatsa ts'ebetso e tsitsitseng ea lisebelisoa, se thibela ho hloleha ka lebaka la khatello e feteletseng, 'me se fokotsa ho lutla ha sistimi ka bophara kapa litšitiso tsa ts'ebetso.

Bohlokoa ba Bohlokoa ba Li-valve tsa Phomolo ea Khatello

Li-PRV li bapala karolo ea bohlokoa haholo lits'ebetsong tsa indasteri. Ntle le tsona, keketseho e sa tloaelehang ea khatello lits'ebetsong tse nang le khatello e phahameng e ka baka ho phatloha ho hoholo ha liphaephe, tšenyo ea lisebelisoa le likotsi tse kholo tsa polokeho. Ho hloleha ho joalo ho lebisa tahlehelong e kholo ea lichelete le likotsi tse ke keng tsa lekanngoa tsa polokeho. Kahoo, khetho e nepahetseng ea PRV, tlhahlobo ea kamehla, tlhokomelo le ho nkeloa sebaka ha li-unit tse nang le liphoso ka nako e nepahetseng ke tsa bohlokoa.

Valve ea Phomolo ea Khatello ea Polokeho: Mantsoe le Bongata

Ka kakaretso, "Valve ea Polokeho" e kenyelletsa li-valve tsa ho imolla khatello. Leha ho le joalo, litlhaloso tsa taolo li bolela hore li-valve tse kentsoeng ka ho toba liboilereng tsa mouoane kapa lijaneng tsa khatello tsa Sehlopha sa I - tse hlokang setifikeiti sa 'mele oa taolo - li bitsoa ka tieo Li-valve tsa Polokeho. Tse ling ka kakaretso li khetholloa e le Li-valve tsa Phomolo kapa Li-valve tsa Phomolo ea Khatello.

Valve ea Polokeho khahlanong le Valve ea Phomolo ea Khatello: Liphapang tsa Bohlokoa

Leha li tšoana ka sebopeho le ka ts'ebetso (ka bobeli li ntša mecha ea phatlalatso ka bo eona ha khatello e feta e behiloeng), Li-valve tsa Polokeho le Li-valve tsa Phomolo ea Khatello lia fapana ho latela Khoutu ea ASME Boiler le Sejana sa Khatello, Karolo ea I:

Valve ea Polokeho: Valve e susumetsoang ke khatello e nang le ketso ea "pop" (e buloang ka potlako). Haholo-holo e sebelisoa bakeng sa tšebeletso ea khase kapa mouoane.

Valve ea Phomolo (Valve ea Phomolo ea Khatello): Valve e susumetsoang ke khatello e buleha ka ho lekana ha khatello e feta ntlha e behiloeng. E sebelisoa haholo-holo bakeng sa tšebeletso ea metsi (mokelikeli).

Ho sa tsotellehe litlhaloso tsena, pherekano e ntse e tsoela pele ka lebaka la ho kopana ha mesebetsi le tšebeliso e fapanyetsanang litlhalosong tse ling tsa limela, hangata e lebisang mathateng a ts'ebetso.

Melao-motheo ea Khetho ea Valve ea Phomolo ea Khatello

Ho khetha mofuta o nepahetseng oa valve ho bohlokoa bakeng sa polokeho le ts'ebetso:

1. Liboiler tsa mouoane:Hangata sebelisa Li-valve tsa polokeho tse Butsoeng, tse Felletseng tsa Spring.

2. Tšebeletso ea Metsi:Ka kakaretso ho hlokahala Li-valve tsa polokeho tse nang le li-spring tse tlase (Li-valve tsa phomolo).

3. Tšebeletso ea Moea/Khase:Sebelisa Li-valve tsa ho Fokotsa Khatello tse Koetsoeng, tse Tlase tse Tlase.

4. Litanka tsa LPG (Tsela/Terene):Hloka Li-valve tsa ho Fokotsa Khatello tse Phahamisitsoeng ka Botlalo, tse Kenngoeng ka Hare.

5. Mabenkele a Lithaba tsa Oli:Hangata ho hlokahala li-valve tsa ho fokotsa khatello tse tsamaisoang ke mofofisi.

6. Tsela ea ho Fetisa Motlakase oa Mouoane ka Khatello e Phahameng:Sebelisa Li-valve tse tsamaisoang ke Pilot tse nang le mesebetsi e kopaneng ea polokeho le taolo.

7. Tlhokahalo ea Tlhahlobo ea Kamehla:Li-valve tse hlokang tlhahlobo ea letsoho li hloka lever (sesebelisoa sa ho phahamisa). Sena se lumella ho phahamisa karolo ka khatello e behiloeng ho ≥75% ho netefatsa ts'ebetso.

8. Tšebeletso ea Mocheso o Phahameng (>300°C bakeng sa li-valve tse koetsoeng, >350°C bakeng sa li-valve tse bulehileng):O tlameha ho sebelisa Li-valve tse nang le Li-Heat Sinks/Li-Foling Fins.

Maemo a Valofo ea Polokeho: Meralo ea Lefatše

Maemo a bohlokoa a taolo a kenyeletsa:

JB/T 2203-1999 (Chaena – Kakaretso):

Tekanyetso e tloaelehileng ea lapeng bakeng sa litekanyo tsa valve ea polokeho ea selemo. Ho na le meeli (max DN200 bakeng sa ho phahamisa ka botlalo, DN100 bakeng sa ho phahamisa ka tlase, ha ho na DN65/DN125). Tloaelo ea indasteri hangata e feta meeli ea boholo (ho fihlela ho DN250 ho phahamisa ka tlase, DN400 ho phahamisa ka botlalo). Litekanyo tsa flange tse sa tsitsang (mohlala, mefuta ea DN150) li hloka lintlafatso tsa maemo bakeng sa ho fapanyetsana.

API 526 (US – Li-Flanged Valve):

Tekanyetso bakeng sa disebediswa tsa dikhemikhale/petrokhemistri tse tswang kantle ho naha. E akaretsa DN25-DN200 (1″-8″), 2-42MPa, boholo ba mmetso DT (9.5-146mm). E hlalosa dibopeho ka saense ka boholo ba mmetso. E fumana kganya Chaena ka ho etsa hore kgwebo/disebediswa di be sebakeng sa yona. Ha e so be tekanyetso ya naha ya China.

Li-valve tse tsamaisoang ke mofofisi (Mohlala oa Anderson Greenwood):

E sebelisoa haholo bakeng sa bokgoni bo phahameng, phapang e tlase ea ts'ebetso, ho lutla ho batlang ho se na letho, le ho se utloe bohloko ha khatello ea mokokotlo (mohlala, liphaephe tsa khase ea tlhaho). Ha e na litekanyetso tse inehetseng tsa Chaena; bahlahisi ba bangata ba latela meralo ea Anderson Greenwood. Tlhokahalo e potlakileng ea litekanyetso tsa malapeng (mohlala, ke HF General Machinery Research Institute).

Letoto la HT (Setsi sa Patlisiso sa Sebaka sa Lifofane sa bo-11 - Chaena):

Sistimi e ikhethang e kenyeletsang HTO (e tloaelehileng), HTB (mabone a leka-lekaneng), HTR (ho ntsha moya), HTN (e khethehileng), HTGS (mouoane o nang le perf e ngata), HTXY (mokelikeli), HTXD (e tsamaisoang ke pilot). HTXD e arolelana litekanyo le Anderson Greenwood; tse ling li fapana le maemo a API/JB. Ho bohlokoa ho netefatsa ho lumellana nakong ea khetho.

Qetello

Li-valve tsa Phokotso ea Khatello ke likarolo tsa bohlokoa tsa polokeho tse thibelang tšenyo ea lisebelisoa le ho netefatsa botsitso ba sistimi ka ho laola khatello e feteletseng. Karolo ea bona ea bohlokoa mesebetsing ea indasteri e ama ka kotloloho tlhahiso le liphello tsa polokeho. Mekhatlo e tlameha ho beha pele khetho e nepahetseng ea PRV, ho kenya ka nepo, kemiso e tiileng ea tlhokomelo, le ho nkeloa sebaka ka potlako ho netefatsa ts'ebetso e tšepahalang, e bolokehileng le e sebetsang hantle ea sistimi.