Kodi ma blind flanges ndi chiyani?

Flange yakhungu ndi mbale yozungulira yokhala ndi zibowo zonse zofunikira kupatula dzenje lapakati. Chifukwa cha chikhalidwe ichi, ma flanges akhungu amagwiritsidwa ntchito kusindikiza malekezero a mapaipi ndi kutseguka kwa ziwiya zokakamiza. Amalolanso kulowa mosavuta mkati mwa chitoliro kapena chombo chitatha kutsekedwa ndipo chiyenera kutsegulidwanso.

Popanda chotchinga chakhungu, kukonza ndi kukonza mapaipi kungakhale kovuta. Kuthamanga kuyenera kuyimitsidwa pa valve yapafupi, yomwe ingakhale makilomita kutali ndi malo okonzera. Kuphatikiza apo, ma valve ndi okwera mtengo komanso amakonda kumamatira. Chitoliro chikhoza kusindikizidwa ndi flange yakhungu pamtengo wotsika kwambiri. Ma flange akhungu amagwiritsidwa ntchito kwambiri m'mafakitale a petrochemical, mapaipi, othandiza komanso opangira madzi, pakati pa ena.

Blind Flange (BF) ndi chigawo chapaipi chomwe chimagwiritsidwa ntchito kuphimba kapena kusindikiza kumapeto kwa chitoliro, vavu, chotengera kapena thanki. Ikagwiritsidwa ntchito kumapeto kwa chitoliro, chombo kapena thanki, imapereka mwayi wotseguka kuti muwonjezere chitoliro. Flange yakhungu imakhala ndi nkhawa kwambiri kuposa flange ina iliyonse chifukwa ntchito yake yayikulu ndikuchepetsa kupanikizika kwa chitoliro.

Blind flanges - mwachidule BV - amagwiritsidwa ntchito kwambiri m'mafakitale onse omwe mapaipi amagwiritsidwa ntchito. Amapezeka m'mitundu yonse ya nkhope (RTJ, Raised and Flat Face) ndi magulu opanikizika. Ngakhale si lingaliro labwino pamapaipi ambiri, akhungu amatha kuyikidwa pakati pa ma flanges awiri kuti aletse kuyenda. Wopangayo agwiritse ntchito akhungu poyesa kutsekereza kuyenda kwa chitoliro kwakanthawi. Chovala chakhungu chimayikidwa kumapeto kwa valavu kuti madzi amadzimadzi asatuluke ngati valavu yatsegulidwa mwangozi.