Kodi mumadziwa bwanji za valve?

Mukudziwa bwanjimavavu?

Chiyambi: kudzera pamiyezo yapadziko lonse lapansi yazinthu zama valve apulasitiki ndi njira zoyesera zopangira zofunikira, kapangidwe kake ndi zofunikira zopanga, zofunikira pakuchita, njira yoyesera, zofunikira pakugwiritsa ntchito dongosolo ndikugwiritsa ntchito kuthamanga ndi kutentha, ndi zina, ubale womwe ulipo pakati pawo utha kumvetsetsa kufunikira. mayeso a pulasitiki osindikizira ma valve, kuyesa kwa torque ndi kuyesa mphamvu ya kutopa ndi zina zofunika zowongolera khalidwe. Zofunikira pakuyesa chisindikizo chapampando wa valve, kuyesa kwa chisindikizo cha valavu, kuyesa mphamvu ya valavu, kuyesa kwanthawi yayitali, kuyesa mphamvu ya kutopa ndi torque yogwiritsira ntchito zimafotokozedwa mwachidule ngati matebulo. Kupyolera mu zokambirana za mavuto angapo pamiyezo yapadziko lonse lapansi, opanga ndi ogwiritsa ntchito ma valve apulasitiki akukhudzidwa. Ndi kuchuluka kwa mapaipi apulasitiki m'madzi ozizira ndi otentha komanso uinjiniya wa mapaipi a mafakitale, kuwongolera kwabwino kwa vavu ya pulasitiki pamapaipi apulasitiki kumakhala kofunika kwambiri. Chifukwa valavu ya pulasitiki ili ndi ubwino wopepuka kulemera, kukana dzimbiri, palibe sikelo adsorption, ndi pulasitiki kulumikiza mapaipi ndi moyo wautali utumiki, valavu pulasitiki mu madzi (makamaka madzi otentha ndi Kutentha) ndi ntchito mafakitale amadzimadzi ena mu payipi pulasitiki. dongosolo, ntchito ubwino wake ndi mavavu ena sangathe kuyerekezedwa. Pakali pano kupanga zoweta ndi kugwiritsa ntchito mavavu pulasitiki, ulamuliro wake si njira yodalirika, madzi ndi mavavu ena madzimadzi pulasitiki ntchito mu makampani khalidwe mankhwala ndi wosagwirizana, ntchito uinjiniya chatsekedwa kutayikira ndi kutayikira chodabwitsa kwambiri, mapangidwe pulasitiki. valavu sangathe kugwiritsa ntchito, zimakhudza chitukuko chonse cha ntchito pulasitiki chitoliro. Muyezo wadziko lonse wa vavu ya pulasitiki m'dziko lathu uli mkati mwa kupanga, mulingo wake wazogulitsa ndi njira zake zimapangidwa molingana ndi muyezo wapadziko lonse lapansi. International valavu pulasitiki mitundu makamaka mpira valavu, gulugufe valavu, valavu cheke, diaphragm valavu ndi valavu padziko lonse, kapangidwe ka mawonekedwe a valavu awiri, atatu ndi Mipikisano njira, zipangizo zazikulu ndi ABS, PVC-U, PVC- C, PB, Pe, PP ndi PVDF ndi zina zotero. Pazinthu zapadziko lonse lapansi zopangira ma valve apulasitiki, choyamba, zida zomwe zimagwiritsidwa ntchito popanga ma valve ndizofunikira. Opanga zopangirazo ayenera kukhala ndi zokhotakhota zokhotakhota mogwirizana ndi muyezo wazinthu zamapaipi apulasitiki. Panthawi imodzimodziyo, kuyesa kusindikiza, kuyesa kwa thupi la valve, kuyesa kwa nthawi yayitali, kuyesa mphamvu ya kutopa ndi torque yogwiritsira ntchito valavu yonse kumatchulidwa, ndipo moyo wautumiki wa valavu ya pulasitiki yomwe imagwiritsidwa ntchito poyendetsa madzi a mafakitale ndi zaka 25. TS EN ISO 15493: 2003 Mapaipi apulasitiki ogwiritsira ntchito mafakitale - ABS, PVC-U ndi PVC-Pipe ndi makina oyenerera - Mapaipi ndi makina oyenerera - Mafotokozedwe a gawo loyamba la thupi la valve, bonati ndi bonati azigwirizana ndi ISO 15493: 2003 Mapaipi Apulasitiki Ogwiritsa Ntchito Mafakitale - ABS, PVC-U ndi PVC-C - Chitoliro ndi TS EN ISO 15493:2003 Plastics Piping Systems for Industrial ntchito - ABS, PVC-U ndi PVC-C - Chitoliro ndi zoyenerera Systems Metric mndandanda ndi ISO 15494: 2003 Mapaipi a Pulasitiki Ogwiritsa Ntchito Mafakitale - PB, PE ndi PP - Mapaipi ndi Makina Opangira mafotokozedwe - *** Gawo: Metric Series. A) Ngati valavu * ili ndi njira yoberekera, iyenera kulembedwa ndi muvi kunja kwa thupi la valve. Mavavu amapangidwe ofananira azikhala oyenera kuyenda kwanjira ziwiri komanso kudzipatula. B) Gawo losindikiza limayendetsedwa ndi tsinde la valve kuti litsegule ndi kutseka valve. Iyenera kuyimitsidwa kumapeto kapena malo aliwonse apakati ndi kukangana kapena actuator, ndipo kuthamanga kwamadzimadzi sikungasinthe malo ake. C) Malingana ndi EN736-3, kakang'ono kwambiri kupyolera mu dzenje la valve iyenera kugwirizana ndi mfundo ziwiri zotsatirazi: - pa malo aliwonse a valve medium flow flow, sikuyenera kukhala osachepera 90% ya mtengo wa valve DN; Kwa ma valve omwe amafunikira mwadongosolo kuti achepetse kabowo kakang'ono, wopanga azinena zocheperapo kudzera mu dzenje. D) Chisindikizo pakati pa tsinde ndi thupi chizikhala molingana ndi EN736-3. E) Ponena za kukana kwa ma valve, mapangidwe a ma valve ayenera kuganizira za moyo wautumiki wa ziwalo zowonongeka, kapena wopanga adzawonetsa mu malangizo ogwiritsira ntchito malingaliro osintha valavu yonse. F) zida zonse zogwirira ntchito za valve ziyenera kukhala ndi liwiro la 3m / s. G) Mukayang'ana pamwamba pa valavu, chogwirira cha valve kapena handwheel chiyenera kutseka valve molunjika. 3 Zofunikira pakupanga a) Kuchita kwa zinthu zogulidwa kumayenera kugwirizana ndi zomwe wopanga amapanga ndikukwaniritsa zofunikira. B) Nambala yazinthu zopangira, DN m'mimba mwake ndi kupanikizika mwadzina PN ziyenera kulembedwa pa valavu. C) Thupi la valve liyenera kulembedwa dzina la wopanga kapena chizindikiro. D) Thupi la valve lidzalembedwa ndi tsiku la kupanga kapena nambala ya code. E) Thupi la valve liyenera kulembedwa ndi code ya malo osiyanasiyana opanga. 4 zazifupi ntchito zofunika ntchito yochepa mu muyezo mankhwala ndi fakitale anayendera zinthu, makamaka kuchita mayeso osindikiza mpando valavu ndi valavu thupi kusindikiza mayeso, ntchito kufufuza ntchito kusindikiza mavavu pulasitiki, mavavu pulasitiki amene angathe. osakhala ndi kutayikira mkati (vavu mpando kutayikira) chodabwitsa, komanso sangakhale ndi kutayikira kunja (vavu kutayikira) chodabwitsa. Kuyesa kusindikiza pampando wa valve ndikutsimikizira momwe ma valve odzipatula amagwirira ntchito; Kuyesa kwa chisindikizo cha valavu ndikutsimikizira kutayikira kwa chisindikizo cha valve tsinde ndi chisindikizo cholumikizira valavu. The valavu pulasitiki ndi dongosolo mapaipi olumikizidwa ndi kuwotcherera kugwirizana: m'mimba mwake akunja valavu kugwirizana gawo ndi wofanana ndi m'mimba mwake akunja chitoliro, ndi mapeto a mbali ya valavu kugwirizana gawo ndi welded wachibale ndi mapeto a chitoliro; Kulumikizana kwazitsulo zazitsulo: gawo logwirizanitsa la valve liri mu mawonekedwe a socket, omwe amamangiriridwa ndi zida za chitoliro; Kulumikizana kwa socket yamagetsi: gawo lolumikizira ma valve ndi mawonekedwe a socket okhala ndi waya wotenthetsera wamagetsi mkati mwake, ndipo amalumikizidwa ndi chitoliro ndi magetsi; Kulumikizana kwazitsulo zotentha zotentha: gawo lolumikizira valavu ndi mawonekedwe a socket, ndipo chitoliro chimagwirizanitsidwa ndi socket yotentha yosungunuka; Kulumikizana kwa socket: gawo lolumikizira valavu lili mu mawonekedwe a socket, ndipo chitolirocho chimalumikizidwa ndi socket; Kukhala ndi mphete yosindikizira mphete: gawo lolumikizira valavu ndi mawonekedwe a mphete yosindikizira ya rabara, ndipo chitolirocho chimalumikizidwa ndi zitsulo; Kulumikizana kwa Flange: gawo lolumikizira valavu lili mu mawonekedwe a flange, olumikizidwa ndi flange pa chitoliro; Kulumikizana kwa ulusi: gawo lolumikizira valavu lili mu mawonekedwe a ulusi, wolumikizidwa ndi ulusi pa chitoliro kapena zida za chitoliro; Kulumikizana kwamoyo: gawo lolumikizira valavu liri mu mawonekedwe a kugwirizana kwamoyo, ndipo chitoliro kapena zida zapaipi zimalumikizidwa. Kulumikizana kosiyana kungapangidwe panthawi imodzi pa valve yomweyi. Ndi kuwonjezeka kwa kutentha, moyo wautumiki wa ma valve apulasitiki uyenera kufupikitsidwa. Kuti mukhalebe ndi moyo womwewo wautumiki, muyenera kuchepetsa kukakamiza kwautumiki.
Kodi mumadziwa bwanji za valve?
Kuwotcherera kwa chitoliro makamaka kumaphatikizapo zophatikizika (IF), kuwotcherera kwa mbale (PL), kuwotcherera kwa khosi lathyathyathya (SO), kuwotcherera khosi matako (WN), kuwotcherera kwa socket (SW), screw (Th), matako kuwotcherera mphete (PJ/SE )/(LF/SE), mphete yowotcherera yosalala (PJ/RJ) ndi chivundikiro cha flange (BL), etc.
Mtsinje wa valve
1, njira yayikulu yolumikizira ma valve ndi: flange, ulusi, kuwotcherera, kuwotcherera
2, ntchito yofunikira ya vavu: dulani sing'anga, sinthani kuyenda, sinthani mayendedwe
3, magawo oyambira a valve ndi: kuthamanga mwadzina PN, m'mimba mwake mwadzina DN
4, kuthamanga kwa vavu - kalasi ya kutentha: zipangizo zosiyanasiyana, kutentha kwa ntchito zosiyanasiyana, kulola kuti kupanikizika kwa ntchito kumasiyana ndi kosiyana
5, miyezo ya chitoliro cha chitoliro imakhala ndi machitidwe awiri: European system ndi American system.
Kusiyanitsa choyenera ndi kalasi ya pressure:
European system ndi PN0.25, 0.6, 1.0, 1.6, 2.5, 4.0, 6.3, 10.0, 16.0, 25.0, 32.0, 40.0MPa;
Dongosolo la ku America ndi PN1.0(CIass75), 2.0(CIass150), 5.0(CIass300), 11.0(CIass600), 15.0(CIass900), 26.0(CIass1500), 42.0(CIass2500)MPa.
Ma valve wamba (padziko lonse).
1, valavu mtundu code Z, J, L, Q, D, G, X, H, A, Y, S motero: valavu pachipata, valavu globe, valavu throttle, valavu mpira, valavu butterfly, diaphragm valavu, valavu pulagi, fufuzani valavu, valavu chitetezo, valavu kuchepetsa kuthamanga, valavu msampha
2, valavu yolumikizira khodi 1, 2, 4, 6, 7 motsatana: 1 - ulusi wamkati, 2 - ulusi wakunja, 4 - flange, 6 - kuwotcherera, 7 - clamp
3, valavu kufala mode code 9, 6, 3 motero: 9 - magetsi, 6 - pneumatic, 3 - turbo nyongolotsi
4, valavu thupi zakuthupi code Z, K, Q, T, C, P, R, V motero: imvi kuponyedwa chitsulo, malleable kuponyedwa chitsulo, ductile kuponyedwa chitsulo, mkuwa ndi aloyi, mpweya zitsulo, chromium faifi tambala zitsulo zosapanga dzimbiri, chromium faifi tambala molybdenum chitsulo chosapanga dzimbiri, chromium molybdenum vanadium chitsulo
5, mpando kusindikiza kapena code code R, T, X, S, N, F, H, Y, J, M, W motsatana: chitsulo chosapanga dzimbiri cha austenitic, aloyi yamkuwa, mphira, pulasitiki, pulasitiki ya nayiloni, pulasitiki ya fluorine, Cr chitsulo chosapanga dzimbiri. , aloyi yolimba, mphira akalowa, Monel aloyi, valavu thupi chuma
6, kuponyedwa chitsulo valavu thupi si oyenera mwambowu: zoyaka ndi kuphulika madzimadzi; Kumene kutentha kozungulira kumakhala pansi -20 ℃; Gasi woponderezedwa; Mpweya wamadzi kapena mpweya wonyowa wokhala ndi madzi ambiri.
Mitundu yosindikizira ya Flange imaphatikizapo: ndege yonse (FF), pamwamba pa protrusive (RF), concave (FM) convex surface (M), tenon (T) groove (G) pamwamba, pamwamba pa ring connection (RJ), etc.