1. Chii chinonzi EN593 butterfly valve?
EN593 butterfly valve inoreva simbi butterfly vharafu yakagadzirwa uye yakagadzirwa zvinoenderana neBS EN 593: 2017 standard, yakanzi "Industrial Mavharuvhu - General Metal Butterfly Mavhavha." Iyi chiyero inoburitswa neBritish Standards Institution (BSI) uye inowirirana neEuropean standards (EN), ichipa humbowo hwakazara hwemagadzirirwo, zvigadzirwa, hukuru, kuyedzwa, uye kuita kwemavharuvhu e butterfly.
EN593 butterfly mavharuvhu anoratidzwa neayo simbi mavharuvhu miviri uye dzakasiyana nzira dzekubatanidza, senge wafer-mhando, lug-mhando, kana kaviri-flanged. Aya butterfly mavharuvhu anogona kushanda pasi pekumanikidzwa kwakasiyana uye tembiricha mamiriro. Iyi chiyero inovimbisa kuti mavharuvhu anosangana nezvinodiwa zvekuchengetedza, kusimba, kuenderana, uye kuvimbika.
2. Zvinhu Zvikuru zveEN593 Butterfly Valves
* Quarter-turn operation: Butterfly mavharuvhu anoshanda nekutenderedza vharafu disc 90 madhigirii, achigonesa kukurumidza uye kunoshanda kuyerera kuyerera.
* Compact dhizaini: Kuenzaniswa nemavharuvhu egedhi, mavharuvhu ebhora, kana mavharuvhu epasi, mavharuvhu eshavishavi haaremi uye anochengetedza nzvimbo, zvichiita kuti ave akanakira kuisirwa nzvimbo ine nzvimbo shoma.
* Yakasiyana magumo ekubatanidza: Inowanikwa muwafer, lug, kaviri flange, imwe flange, kana U-mhando dhizaini, inoenderana nemapombi akasiyana masisitimu.
* Corrosion kuramba: Yakagadzirwa kubva kumhando yepamusoro-inodzivirira corrosion zvinhu kuti ive nechokwadi chekusimba munzvimbo dzinoita ngura.
* Yakaderera torque: Yakagadzirirwa kudzikisa torque zvinodiwa, ichigonesa otomatiki ine madiki actuators uye kudzikisa mutengo.
* Zero-leakage sealing: Mazhinji EN593 mavharuvhu anoratidza elastic zvigaro zvakapfava kana zvigaro zvesimbi, zvichipa kuvharika-kusunga chisimbiso chekuita kwakavimbika.
3. BS EN 593:2017 Standard Details
Kubva muna 2025, iyo BS EN 593 yakajairika inotora iyo 2017 vhezheni. EN593 igwara rakazara resimbi butterfly mavharuvhu, inotsanangura zvishoma zvinodikanwa pakugadzira, zvinhu, hukuru uye kuyedzwa. Izvi zvinotevera sumo yakadzama kune iyo huru yemukati chiyero, inotsigirwa neindasitiri data.
3.1. Chikamu chechiyero
TS EN 593: 2017 mavharuvhu esimbi e butterfly anoshanda kune zvakajairika, zvinosanganisira kuzviparadzanisa nevamwe, kudzora, kana kutonga kwekuyerera kwemvura. Inovhara marudzi akasiyana-siyana emavharuvhu ane pombi yekupedzisira yekubatanidza, senge:
* Wafer-mhando: Yakasungirirwa pakati pemafurange maviri, ine compact chimiro uye lightweight dhizaini.
* Lug-mhando: Mamiriro akaiswa maburi maburi, akakodzera kushandiswa pamigumo yepombi.
* Yakapetwa kaviri: Inoratidzira akakosha maflange, akananga mabhaudhi kune pombi flanges.
* Single-flanged: Inoratidzira akakosha maflange padivi pevharuvhu yepakati axis.
* U-mhando: Imhando yakakosha yewafer-mhando vharafu ine maflange maviri anogumira uye compact yakatarisana kumeso.
3.2. Pressure uye Size Range
TS EN 593: 2017 inotsanangura kudzvanywa uye saizi masanji emavharuvhu e butterfly:
* Pressure ratings:
- PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160 (European pressure ratings).
- Kirasi 150, Kirasi 300, Kirasi 600, Kirasi 900 (ASME kumanikidzwa ratings).
* Size range:
- DN 20 kusvika kuDN 4000 (zita dhayamita, anenge 3/4 inch kusvika 160 inches).
3.3. Magadzirirwo uye Manufacturing Zvinodiwa
Iyi chiyero inotsanangudza maitiro ekugadzira kuti ave nechokwadi chekuvimbika uye kuita kwevhavha:
* Mavharuvhu emuviri zvinhu: Mavharuvhu anofanira kugadzirwa kubva esimbi zvinhu senge ductile iron, kabhoni simbi (ASTM A216 WCB), Stainless simbi (ASTM A351 CF8/CF8M), kana aruminiyamu bhuronzi (C95800).
* Dhizaini yedhisiki yevhavha: Ivhavha disc inogona kunge iri pakati kana eccentric (inogadzirisa kuderedza kusapfeka kwechigaro uye torque).
* Mavharuvhu ezvigaro zvechigaro: Zvigaro zvevhavha zvinogona kugadzirwa nezvinhu elastic (senge rabha kana PTFE) kana zvinhu zvesimbi, zvichienderana nekushandiswa. Elastic zvigaro zvinopa zero-leakage chisimbiso, nepo zvigaro zvesimbi zvichifanirawo kumira tembiricha yakakwira uye ngura mukuwedzera pakuwana zero kuvuza.
* Huso nechiso zvimiro: Inofanirwa kutevedzera EN 558-1 kana ISO 5752 zviyero kuti ive nechokwadi chekuenderana nemapombi masisitimu.
* Flange dimensions: Inoenderana nezviyero zvakaita se EN 1092-2 (PN10/PN16), ANSI B16.1, ASME B16.5, kana BS 10 Tafura D/E, zvichienderana nerudzi rwevharuvhu.
* Actuator: Mavharuvhu anogona kushanda nemaoko (mubato kana giya bhokisi) kana kushanda otomatiki (pneumatic, magetsi, kana hydraulic actuator). Iyo yepamusoro flange inofanirwa kutevedzera ISO 5211 zviyero kugonesa yakamisikidzwa actuator kuisirwa.
3.4. Kuedza uye Kuongorora
Kuve nechokwadi chemhando uye kuita, BS EN 593: 2017 inoda kuomarara kuyedzwa:
* Hydraulic pressure test: Inosimbisa kuti vharuvhu haina kuvuza-isina kudzvinyirirwa kwakatarwa.
* Kushanda bvunzo: Inovimbisa kushanda kwakatsetseka uye kwakakodzera torque pasi pemamiriro ekufungidzira.
* Leakage Test: Simbisa bubble-yakasimba kuvharika kweye elastic valve chigaro zvinoenderana neEN 12266-1 kana API 598 zviyero.
* Chitupa Chekuongorora: Mugadziri anofanirwa kupa bvunzo uye yekuongorora mishumo kuti aone kutevedza zviyero.
3.5. Zvishandiso zve EN593 Butterfly Valves
* Kugadziriswa kweMvura: Rongedza uye patsanura kuyerera kwemvura zhinji yakachena, yegungwa, kana tsvina. Zvishandiso zvisingadziviriri uye machira anoita kuti zvikodzere nharaunda dzakaoma.
* Makemikari uye Petrochemical Industries: Kubata zvinoparadza zvinwiwa zvakaita seasidhi, alkalis, uye zvinonyungudutsa, zvichibatsirwa nezvinhu zvakaita sezvigaro zvePTFE uye PFA-lined valve discs.
* Oiri neGasi: Kubata yakakwira-kudzvanywa, yakanyanya-tembiricha zvinwiwa mumapaipi, kuchenesa, uye mapuratifomu ekumahombekombe. Iyo kaviri-offset dhizaini inofarirwa nekuda kwekugara kwayo pasi pemamiriro aya.
* HVAC masisitimu: Kudzora kuyerera kwemhepo, mvura, kana firiji mukudziya uye kutonhora masisitimu.
* Kugadzira magetsi: Kudzora chiutsi, mvura inotonhorera, kana zvimwe zvinwiwa mumagetsi emagetsi.
* Maindasitiri echikafu nemishonga: Kushandisa FDA-inopindirana zvinhu (sePTFE uye WRA-yakasimbiswa EPDM) kuve nechokwadi chekusvibiswa-isina kushanda uye kusangana nehutsanana zviyero.
3.6. Maintenance uye Kuongorora
Kuve nechokwadi chekushanda kwenguva refu, EN593 butterfly mavharuvhu anoda kugara achigadziriswa:
* Yekuongorora frequency: Ongorora mwedzi mitanhatu yega yega kusvika kune rimwe gore nekuda kwekupfeka, ngura, kana nyaya dzekushanda.
* Kuzora: Deredza kukwesha uye wedzera hupenyu hwevhavha.
* Chigaro chevhavha uye Chisimbiso Chekuongorora: Simbisa kuvimbika kwezvigaro zve elastic kana simbi yevharuvhu kudzivirira kuvuza.
* Actuator Maintenance: Ita shuwa kuti pneumatic kana yemagetsi actuators haina marara uye inoshanda zvakajairwa.
4. Kuenzanisa neMimwe Mitemo API 609
Nepo BS EN 593 ichishanda kune zvakajairika maindasitiri, inosiyana neiyo API 609 yakajairwa, iyo yakanyatsogadzirirwa kushandiswa kweoiri uye gasi. Misiyano yakakosha inosanganisira:
* Kutariswa kwekushandisa: API 609 inotarisana neoiri negasi nharaunda, nepo BS EN 593 inovhara huwandu hwakakura hwemaindasitiri, kusanganisira kurapwa kwemvura uye kugadzira zvakajairika.
* Mayero ekudzvinyirira: API 609 inowanzovhara Kirasi 150 kusvika Kirasi 2500, nepo BS EN 593 inosanganisira PN 2.5 kusvika PN 160 uye Kirasi 150 kusvika Kirasi 900.
* Dhizaini: API 609 inosimbisa zvinhu zvisingadzivirirwe nekuomarara, nepo BS EN 593 ichibvumira kusarudzwa kwezvinhu zvinoshanduka.
* Kuedza: Mayedzo ese ari maviri anoda kuomesesa kuyedzwa, asi API 609 inosanganisira zvimwe zvinodiwa zvekugadzira-inodzivirira moto, iyo yakakosha mukushandisa oiri negesi.
5. Mhedziso
| Feature | Zvinhu Zvikuru Zvinotsanangurwa neEN 593 |
| Valve Type | Metallic butterfly mavharuvhu |
| Operation | Manual, giya, pneumatic, magetsi |
| Kutarisana-kutarisana-Zviyero | Sezve EN 558 Series 20 (wafer/lug) kana Series 13/14 (yakaiswa) |
| Pressure Rating | Kazhinji PN 6, PN 10, PN 16 (inogona kusiyana) |
| Design Temperature | Zvichienderana nezvinhu zvinoshandiswa |
| Flange Kugarisana | EN 1092-1 (PN flanges) ISO 7005 |
| Testing Standards | EN 12266-1 yekumanikidza uye kuvuza bvunzo |
Iyo BS EN 593: 2017 yakajairwa inopa hwaro hwakasimba hwekugadzira, kugadzira, uye kuyedzwa kwesimbi butterfly mavharuvhu, kuve nechokwadi kuvimbika kwawo, kuchengetedzeka, uye kuita mumhando dzakasiyana dzekushandisa. Nekuomerera kune zvakajairwa zvinodikanwa zvekumanikidzirwa zviyero, saizi masanji, zviwanikwa, uye kuyedzwa, vagadziri vanogona kugadzira mavharuvhu anosangana nemhando yepasirese mabhenji.
Kunyangwe iwe uchida wafer-mhando, lug-mhando, kana kaviri-flanged butterfly mavharuvhu, kutevedzera EN 593 yakajairwa inogonesa kusanganisa, kusimba, uye kutonga kwakanaka kwemvura.