Kusiyana pakati pa zisindikizo zofewa ndi zolimba za mavavu:

Choyamba, kaya ndi valavu ya mpira kapena avalavu ya butterfly, etc., pali zisindikizo zofewa ndi zolimba, tengani valavu ya mpira monga chitsanzo, kugwiritsa ntchito zisindikizo zofewa ndi zolimba za ma valves a mpira ndizosiyana, makamaka mwadongosolo, ndipo miyezo yopangira ma valve ndi yosagwirizana.

Choyamba, structural limagwirira

Chisindikizo cholimba cha valavu ya mpira ndi chisindikizo chachitsulo ndi zitsulo, ndipo mpira wosindikizira ndi mpando ndi zitsulo. Kulondola kwa makina ndi njira zake zimakhala zovuta, ndipo nthawi zambiri zimagwiritsidwa ntchito kwambiri, nthawi zambiri kuposa 35MPa. Zisindikizo zofewa ndi zisindikizo pakati pa zitsulo ndi zopanda zitsulo, monga nayiloni\PTFE, ndipo miyezo yopangira ndi yofanana.

Chachiwiri, zida zosindikizira

Chisindikizo chofewa ndi cholimba ndi chinthu chosindikizira champando wa valve, ndipo chisindikizo cholimba chimapangidwa bwino ndi zida zapampando wa valve kuti zitsimikizire kulondola kofananira ndi pachimake cha valve (mpira), nthawi zambiri chitsulo chosapanga dzimbiri ndi mkuwa. Kusindikiza kofewa kumatanthauza kuti zinthu zosindikizira zomwe zimayikidwa pampando wa valve ndizinthu zopanda zitsulo, chifukwa chosindikizira chofewa chimakhala ndi kusungunuka kwina, kotero kuti zofunikira zowonongeka zidzakhala zochepa kusiyana ndi kusindikiza kolimba.

Chachitatu, njira yopanga

Chifukwa cha mafakitale ambiri a mankhwala, malo ogwirira ntchito a makina opangidwa ndi makina ndi ovuta kwambiri, ambiri amatentha kwambiri komanso kuthamanga kwambiri, kukana kwapakati pa sing'anga ndi kwakukulu, ndipo kutukuka kumakhala kolimba, tsopano teknoloji yapita patsogolo, kugwiritsa ntchito zipangizo zosiyanasiyana kuli bwino, ndikukonza ndi zina zimatha kupitilira, kotero kuti valavu ya mpira yokhala ndi chisindikizo cholimba yalimbikitsidwa kwambiri.

Ndipotu, mfundo ya valavu yolimba ya mpira ndi yofanana ndi ya chisindikizo chofewa, koma chifukwa ndi chisindikizo pakati pa zitsulo, m'pofunika kuganizira za kuuma kwa mgwirizano pakati pa zitsulo, komanso momwe zimagwirira ntchito, zomwe zimapangidwira, ndi zina zotero. Kukonzekera kwa valve yolimba yosindikizira mpira ndi yaitali, kukonza kumakhala kovuta kwambiri, ndipo sikophweka kuchita ntchito yabwino ya valve yolimba yosindikizira mpira.

Chachinayi, zikhalidwe ntchito

Zisindikizo zofewa zimatha kufikira zisindikizo zazikulu, pomwe zolimba zimatha kukhala zazitali kapena zotsika malinga ndi zofunikira; Zisindikizo zofewa ziyenera kukhala zopanda moto, chifukwa pa kutentha kwakukulu, zinthu za chisindikizo chofewa zidzatha, pamene chisindikizo cholimba sichikhala ndi vutoli; Zisindikizo zolimba zimatha kupangidwa ndi zisindikizo zazikulu, koma zofewa sizingathe; Chifukwa cha vuto la sing'anga yomwe ikuyenda, chisindikizo chofewa sichingagwiritsidwe ntchito nthawi zina (monga zofalitsa zina zowonongeka); Valavu yomaliza yosindikizira nthawi zambiri imakhala yokwera mtengo kuposa valavu yosindikizira yofewa. Ponena za kupanga, palibe kusiyana kwakukulu pakati pa ziwirizi, chinthu chachikulu ndicho kusiyana pakati pa mipando ya valve, chisindikizo chofewa sichikhala chachitsulo, ndipo chisindikizo cholimba ndi chitsulo.

Chachisanu, pakusankha zida

Kusankhidwa kwa mavavu a mpira ofewa ndi olimba kwambiri kumatengera sing'anga, kutentha ndi kupanikizika, sing'anga yambiri imakhala ndi tinthu tating'onoting'ono kapena tavala kapena kutentha ndipamwamba kuposa madigiri a 200, ndi bwino kusankha zisindikizo zolimba, m'mimba mwake ndi wamkulu kuposa 50, kusiyana kwa kuthamanga kwa valve ndikokulirapo, komanso makokedwe a valve otsegulira amaganiziridwanso, ndipo chosindikizira cholimba kwambiri, chosindikizira cholimba pamene chosindikizira chiyenera kusankhidwa, valavu ndi yofewa. mulingo wosindikiza ukhoza kufika pamlingo wa 6.

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