Mapangidwe a valve a mpira amagawidwa kukhala mtundu woyandama ndi mtundu wokhazikika

Vavu ya mpira yokhazikika

Pali poyambira pansi pa valavu kukonza valavu ya mpira.Pakatikati pali valavu ya mpira.Pali tsinde la valve kumtunda ndi kumunsi kuti mukonze mpirawo pakati.Kuchokera kunja, kawirikawiri, valavu ya mpira yokhala ndi malo othandizira diski pansi pa valavu ya mpira ndi valve yokhazikika ya mpira.

Vavu ya mpira woyandama

Mpira umayandama pakati, ndipo palibe malo othandizira pansipa ndi valavu ya mpira yoyandama

Kutalika kwakukulu kwa valve yoyandama ya mpira nthawi zambiri ndi DN250

Kutalika kwakukulu kwa valve yokhazikika ya mpira kungakhale DN1200

Kusiyana kwakukulu pakati pa mavavu a mpira okhazikika ndi oyandama kuli pakukhazikika kwa mpira wapakatikati.Kukonzekera kumawononga chisindikizocho mosiyana.Mtundu wokhazikika umapangitsa moyo wautumiki wa valve ya mpira.Vavu yokhazikika ya mpira imakhala ndi moyo wautali wautumiki kuposa valavu ya mpira yoyandama.Mpira wa mtundu wa valavu ya mpira umayandama ndikuzungulira pabowo, zomwe zimapangitsa kuti chisindikizocho chiyandama ndikumira.Pamene valavu ya mpira ikuzungulira, mfundo zopanikizika zimakhala zosiyana.Ngati palibe mfundo yothandizira, idzawononga chisindikizo kumbali zonse ziwiri.Malingana ngati valavu ya mpira ikugwiritsidwa ntchito, imayambitsa kutayika kosiyana kosiyana.Mpirawo ukakhala ndi nsonga yothandizira, sudzayambitsa kutayika kwa mphamvu kapena kutayika kwapamwamba kudzakhala kochepa kwambiri, kotero kuti moyo wa valve yokhazikika ndi yaitali kuposa ya mtundu woyandama., Ndi bwino kugwiritsa ntchito valavu yokhazikika ya mpira nthawi zina ndi ma frequency apamwamba.

Valve ya mpirakusindikiza

Mavavu a mpira amaphatikiza ma valve opangidwa ndi V, ma eccentric theka la mpira,PVC valavu mpira, ndi zina.

Awa ndi ma valve osiyana omwe amatchulidwa malinga ndi zochitika zosiyanasiyana

V mtundu wa mpira valve

Njira yodutsa ya V-woboola valavu ya mpira ndi valavu ya mpira yokhala ndi doko la V lodulidwa, lomwe ndi valavu yokhazikika ya mpira.

Kuchuluka kwa ntchito: Doko la V lakonzedwa mwapadera.Ndi chocheka chooneka ngati V.Mofanana ndi mpeni, ntchito yake ndi kudula ulusi wina.Kwa tinthu tating'onoting'ono, timaphwanyidwa mwachindunji.Njira yopangira mpira ndi yosiyana.Makamaka mafakitole ena ali ndi zinyalala kapena zida zolimba kwambiri, monga mtundu wa V woboola pakati womwe umagwiritsidwa ntchito nthawi zambiri.

Eccentric theka la mpira valve

The eccentric hemispherical valve ndi ofanana ndi V-woboola valavu mpira.Pakati pa valve ndi theka chabe, komanso ndi valve yokhazikika ya mpira.Amagwiritsidwa ntchito makamaka pazinthu zolimba.Mavavu onse olimba a mpira amagwiritsa ntchito ma eccentric hemispherical valves.Zomera zambiri za simenti zimagwiritsanso ntchito izi.

Ma valve onse a V-woboola pakati ndi eccentric semi-ball valve ndi unidirectional ndipo amatha kungoyenda mbali imodzi, osati bidirectional flow, chifukwa mpira wake umasindikizidwa mbali imodzi, ndipo chisindikizo sichikhala cholimba chikakhomeredwa ndi mbali yakumbuyo, koma imayenda mbali imodzi yokha.Kusindikiza kudzakhala kolimba pamene kukakamizidwa kukugwiritsidwa ntchito.

Valve ya mpira wa PVC

Zisindikizo zaMavavu a PVCndi EPDM (ethylene propylene diene monomer), FPM (rabara ya fluorine)

Valve yolimba ya mpira

Chisindikizo cholimba chili ndi mawonekedwe apadera

Pali kasupe kumbuyo kwa mpando wa valve yolimba, chifukwa ngati mpando wa valve yolimba kwambiri ndi mpira zimagwirizanitsidwa pamodzi, sizingazungulira.Pamene kasupe akugwirizanitsidwa kumbuyo kwa mpando wa valve, mpirawo udzakhala ndi kusinthasintha panthawi yozungulira, chifukwa chisindikizo cholimba Vuto lomwe liyenera kuthetsedwa ndiloti mpirawo ukhoza kugwira ntchito bwino, koma mpirawo umagwedezeka nthawi zambiri ndi sing'anga.Ngati tinthu tating'onoting'ono takhazikika pampando wa valve, singagwiritsidwe ntchito.Choncho, ndi kutambasula pang'ono ndipo zimadalira kuuma kwa mpira kutambasula.Ngati ndi chisindikizo chofewa, ngati tinthu tating'onoting'ono tamatira mu chisindikizo, valavu idzawonongeka mwachindunji ikatsekedwa.Chisindikizo cholimba ndi chofanana ndi valavu ya mpira yooneka ngati V musanachoke ku fakitale ndi S60 yowonekera.Chisindikizo ndi mpira ndizolimba, choncho nthawi zambiri zimakhala zovuta.Sichingasweke ngati mutachipala pang'ono

Chizindikiro cha PPL

Chisindikizocho chilinso ndi zinthu za PPL, dzina lake limakulitsidwa PTFE, zopangira ndi polytetrafluoroethylene, koma ma graphite ena amawonjezedwa kuti asanduke kutentha kwambiri, kutentha kwapamwamba kumatha kufika 300 ° (osati kukana kwanthawi yayitali 300 ° High. kutentha), kutentha kwabwino ndi 250 °.Ngati mukufuna nthawi yayitali ya 300 °, muyenera kusankha valavu yolimba yosindikizira.Kutentha kokhazikika kwa kutentha kwa chisindikizo cholimba kumatha kufika 450 °, ndipo kutentha kwapamwamba kumatha kufika 500 °.