1. Valve ea serurubele ea EN593 ke eng?
Valve ea serurubele ea EN593 e bolela valve ea serurubele ea tšepe e entsoeng le ho etsoa ho latela maemo a BS EN 593:2017, a bitsoang "Li-valve tsa Indasteri - Li-valve tsa Serurubele tsa Tšepe tse Akaretsang." Maemo ana a phatlalalitsoe ke British Standards Institution (BSI) 'me a tsamaisana le maemo a Europe (EN), a fanang ka moralo o felletseng oa moralo, thepa, litekanyo, liteko le ts'ebetso ea li-valve tsa serurubele.
Li-valve tsa serurubele tsa EN593 li khetholloa ka 'mele ea tsona ea li-valve tsa tšepe le mekhoa e fapaneng ea khokahano, joalo ka mofuta oa wafer, mofuta oa lug, kapa tse nang le double-flanged. Li-valve tsena tsa serurubele li ka sebetsa tlas'a maemo a fapaneng a khatello le mocheso. Tekanyetso ena e netefatsa hore li-valve li fihlela litlhoko tse thata tsa polokeho, ho tšoarella, ho lumellana le ts'epo.
2. Likarolo tsa Bohlokoa tsa Li-valve tsa Serurubele tsa EN593
* Ts'ebetso ea ho chencha kotara: Li-valve tsa serurubele li sebetsa ka ho potoloha diski ea valve ka likhato tse 90, ho nolofalletsa taolo ea phallo e potlakileng le e sebetsang hantle.
* Moralo o moqotetsane: Ha ho bapisoa le li-valve tsa heke, li-valve tsa bolo, kapa li-valve tsa globe, li-valve tsa serurubele li bobebe ebile li boloka sebaka, e leng se etsang hore li be ntle bakeng sa ho kenya ka sebaka se fokolang.
* Likhokahano tse fapaneng tsa pheletso: Li fumaneha ka wafer, lug, double flange, single flange, kapa meralo ea mofuta oa U, e tsamaellanang le litsamaiso tse fapaneng tsa liphaephe.
* Ho hanyetsa mafome: E entsoe ka thepa ea boleng bo holimo e sa senyeheng mafome ho netefatsa hore e tšoarella libakeng tse senyang.
* Torque e tlase: E etselitsoe ho fokotsa litlhoko tsa torque, e nolofalletsang boiketsetso ka li-actuator tse nyane le ho fokotsa litšenyehelo.
* Ho kwala ha lefela: Di-valve tse ngata tsa EN593 di na le ditulo tse bonolo tse tenyetsehang kapa ditulo tsa tshepe, tse fanang ka ho kwala ho tiileng jwalo ka dipululana bakeng sa tshebetso e tshepahalang.
3. BS EN 593: 2017 Lintlha tse tloaelehileng
Ho tloha ka 2025, tekanyetso ea BS EN 593 e sebelisa mofuta oa 2017. EN593 ke tataiso e felletseng bakeng sa li-valve tsa lirurubele tsa tšepe, e hlalosang litlhoko tse fokolang tsa moralo, thepa, litekanyo le liteko. Se latelang ke selelekela se qaqileng sa litaba tsa mantlha tsa tekanyetso, se tšehetsoang ke data ea indasteri.
3.1. Sekgahla sa maemo
BS EN 593:2017 e sebetsa ho li-valve tsa serurubele tsa tšepe bakeng sa merero e akaretsang, ho kenyeletsoa ho arola, ho laola, kapa ho laola phallo ea mokelikeli. E koahela mefuta e fapaneng ea li-valve ka likhokahano tsa pheletso ea liphaephe, joalo ka:
* Mofuta oa Wafer: E khomaretsoe pakeng tsa li-flange tse peli, e nang le sebopeho se senyenyane le moralo o bobebe.
* Mofuta oa Lug: E na le masoba a ho kenya a nang le khoele, a loketseng ho sebelisoa lipheletsong tsa liphaephe.
* E nang le mahlakore a mabeli: E na le mahlakore a kopaneng, a tlameletsoeng ka ho toba ho mahlakore a liphaephe.
* E nang le lesoba le le leng: E na le li-flange tse kopaneng ho potoloha axis e bohareng ea 'mele oa valve.
* Mofuta oa U: Mofuta o ikhethang oa valve ea mofuta oa wafer e nang le lipheletso tse peli tsa flange le litekanyo tse nyane tsa lifahleho tse shebaneng.
3.2. Kgatelelo le Boholo ba Sebaka
BS EN 593:2017 e totobatsa khatello le boholo ba li-valve tsa serurubele:
* Litlhahlobo tsa khatello:
- PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160 (Litekanyetso tsa khatello ea Europe).
- Sehlopha sa 150, Sehlopha sa 300, Sehlopha sa 600, Sehlopha sa 900 (litekanyetso tsa khatello ea ASME).
* Mefuta ea boholo:
- DN 20 ho isa ho DN 4000 (bophara bo tloaelehileng, hoo e ka bang lisenthimithara tse 3/4 ho isa ho tse 160).
3.3. Litlhoko tsa Moralo le Tlhahiso
Tekanyetso ena e totobatsa litekanyetso tse itseng tsa moralo ho netefatsa ts'epo le ts'ebetso ea valve:
* Thepa ea 'mele oa valve: Li-valve li tlameha ho etsoa ka thepa ea tšepe e kang tšepe e ductile, tšepe ea carbon (ASTM A216 WCB), tšepe e sa hloekang (ASTM A351 CF8/CF8M), kapa boronse ea aluminium (C95800).
* Moralo oa diski ea valve: Disk ea valve e ka ba bohareng kapa e sa tloaelehang (e sebediswe ho fokotsa ho senyeha ha setulo le torque).
* Thepa ea setulo sa valve: Litulo tsa valve li ka etsoa ka thepa e tenyetsehang (joalo ka rabara kapa PTFE) kapa thepa ea tšepe, ho latela ts'ebeliso. Litulo tsa elastic li fana ka tiiso ea ho se lutle letho, ha litulo tsa tšepe le tsona li tlameha ho mamella mocheso o phahameng le mafome ho phaella ho ho finyella ho se lutle letho.
* Litekanyo tsa ho shebana lifahleho: E tlameha ho latela maemo a EN 558-1 kapa ISO 5752 ho netefatsa hore e lumellana le litsamaiso tsa liphaephe.
* Litekanyo tsa Flange: E lumellana le maemo a kang EN 1092-2 (PN10/PN16), ANSI B16.1, ASME B16.5, kapa BS 10 Table D/E, ho latela mofuta oa valve.
* Sesebelisi sa motlakase: Li-valve li ka sebelisoa ka letsoho (ka letsoho kapa ka lebokose la gearbox) kapa tsa sebelisoa ka boiketsetso (sesebelisi sa motlakase, sa motlakase, kapa sa haeteroliki). Flange e ka holimo e tlameha ho latela maemo a ISO 5211 ho nolofalletsa ho kenngoa ha sesebelisi sa motlakase se tloaelehileng.
3.4. Teko le Tlhahlobo
Ho netefatsa boleng le ts'ebetso, BS EN 593:2017 e hloka liteko tse matla:
* Teko ea khatello ea haeteroliki: E netefatsa hore valve ha e na ho lutla ha khatello e boletsoeng.
* Teko ea ts'ebetso: E netefatsa ts'ebetso e boreleli le torque e loketseng tlas'a maemo a etsisitsoeng.
* Teko ea ho Dutla: Netefatsa ho koaloa ha setulo sa valve se tenyetsehang joaloka lipululana ho latela maemo a EN 12266-1 kapa API 598.
* Setifikeiti sa Tlhahlobo: Moetsi o tlameha ho fana ka litlaleho tsa liteko le tlhahlobo ho netefatsa ho latela maemo.
3.5. Ts'ebeliso ea Li-valve tsa Serurubele tsa EN593
* Phekolo ea Metsi: Laola le ho arola phallo ea metsi a hloekileng a fapaneng, metsi a leoatle, kapa a litšila. Lisebelisoa le masela a sa senyeheng ke mafome li etsa hore li lokele libaka tse thata.
* Liindasteri tsa Lik'hemik'hale le Petrochemical: Ho sebetsana le maro a senyang a kang li-acid, li-alkali le li-solvent, ho rua molemo linthong tse kang litulo tsa PTFE le li-disc tsa valve tse nang le PFA.
* Oli le Khase: Ho laola maro a kgatello e phahameng, a mocheso o phahameng diphaepheng, difemeng tsa ho hlwekisa le dipolatefomong tsa lewatle. Moralo wa ho kgaola habeli o ratwa ka lebaka la ho tshwarella ha wona tlasa maemo ana.
* Mekhoa ea HVAC: Ho laola phallo ea moea, metsi, kapa sehatsetsing litsamaisong tsa ho futhumatsa le ho pholisa.
* Phepelo ea motlakase: Ho laola mouoane, metsi a pholileng, kapa maro a mang a litsi tsa motlakase.
* Liindasteri tsa lijo le meriana: Ho sebelisa thepa e lumellanang le FDA (joalo ka PTFE le EPDM e netefalitsoeng ke WRA) ho netefatsa ts'ebetso e se nang tšilafalo le ho fihlela litekanyetso tsa bohloeki.
3.6. Tlhokomelo le Tlhahlobo
Ho netefatsa ts'ebetso ea nako e telele, li-valve tsa serurubele tsa EN593 li hloka tlhokomelo ea kamehla:
* Makgetlo a tlhahlobo: Hlahloba dikgwedi tse ding le tse ding tse tsheletseng ho isa selemong se le seng bakeng sa mathata a ho tsofala, ho bola, kapa a tshebetso.
* Ho tlotsa: Fokotsa khohlano le ho eketsa nako ea bophelo ba valve.
* Tlhahlobo ea Setulo sa Valve le Tiiso: Netefatsa botšepehi ba litulo tsa valve tse tenyetsehang kapa tsa tšepe ho thibela ho lutla.
* Tlhokomelo ea Actuator: Netefatsa hore li-actuator tsa pneumatic kapa tsa motlakase ha li na lithōle 'me li sebetsa ka tsela e tloaelehileng.
4. Papiso le Maemo a Mang a API 609
Leha BS EN 593 e sebetsa bakeng sa ts'ebeliso e akaretsang ea indasteri, e fapana le maemo a API 609, a etselitsoeng ka ho khetheha lits'ebetso tsa oli le khase. Liphapang tsa bohlokoa li kenyelletsa:
* Tsepamiso ea ts'ebeliso: API 609 e shebane le tikoloho ea oli le khase, ha BS EN 593 e akaretsa mefuta e mengata ea liindasteri, ho kenyeletsoa le kalafo ea metsi le tlhahiso e akaretsang.
* Litekanyetso tsa khatello: API 609 hangata e akaretsa Sehlopha sa 150 ho isa ho Sehlopha sa 2500, ha BS EN 593 e kenyelletsa PN 2.5 ho isa ho PN 160 le Sehlopha sa 150 ho isa ho Sehlopha sa 900.
* Moralo: API 609 e totobatsa thepa e sa senyeheng ke mafome ho mamella maemo a thata, ha BS EN 593 e dumella kgetho ya thepa e tenyetsehang haholoanyane.
* Teko: Maemo ka bobedi a hloka diteko tse matla, empa API 609 e kenyelletsa ditlhoko tse ding bakeng sa moralo o sa tjheseng, e leng sa bohlokwa ditshebedisong tsa oli le kgase.
5. Qetello
| Tšobotsi | Lintlha tsa Bohlokoa tse Hlalositsoeng ke EN 593 |
| Mofuta oa Valve | Li-valve tsa serurubele tsa tšepe |
| Ts'ebetso | Manual, gear, pneumatic, motlakase |
| Litekanyo tsa Lifahleho li Talimane | Ho ya ka EN 558 Series 20 (wafer/lug) kapa Series 13/14 (e flanged) |
| Tekanyetso ea Khatello | Ka tloaelo PN 6, PN 10, PN 16 (e ka fapana) |
| Mocheso oa Moralo | Ho itshetlehile ka thepa e sebediswang |
| Ho lumellana ha Flange | EN 1092-1 (li-flange tsa PN), ISO 7005 |
| Maemo a Teko | EN 12266-1 bakeng sa liteko tsa khatello le ho lutla ha metsi |
Tekanyetso ea BS EN 593:2017 e fana ka moralo o tiileng bakeng sa moralo, tlhahiso le liteko tsa li-valve tsa serurubele tsa tšepe, ho netefatsa ts'epo ea tsona, polokeho le ts'ebetso ho pholletsa le mefuta e mengata ea lits'ebetso. Ka ho latela litlhoko tsa tekanyetso bakeng sa litekanyetso tsa khatello, boholo, thepa le liteko, bahlahisi ba ka hlahisa li-valve tse fihlelang litekanyetso tsa boleng ba lefats'e.
Hore na o hloka di-valve tsa serurubele tse nang le mofuta wa wafer, mofuta wa lug, kapa tse nang le mahlakore a mabedi, ho latela maemo a EN 593 ho netefatsa kopanyo e se nang sekoli, ho tshwarella le taolo e sebetsang ya mokelikeli.