Ntchito ya Gasket ya Valve & Buku Lothandizira

Ma gasket a ma valve apangidwa kuti ateteze kutuluka kwa madzi komwe kumachitika chifukwa cha kupanikizika, dzimbiri, komanso kutentha komwe kumakula/kupindika pakati pa zigawo. Ngakhale kuti pafupifupi zonse zimapindikakulumikizana's Ma valve amafuna ma gasket, momwe amagwiritsidwira ntchito komanso kufunika kwawo zimasiyana malinga ndi mtundu wa ma valve ndi kapangidwe kake. Mu gawo lino,TWSidzafotokoza malo oyika ma valavu ndi kusankha zinthu za gasket.

I. Kugwiritsa ntchito kwakukulu kwa ma gaskets kuli pa cholumikizira cha flange cha ma valavu.

Valavu yogwiritsidwa ntchito kwambiri

1. Valavu ya Chipata
2. Valavu ya Globe
3. Valavu ya gulugufe(makamaka valavu ya gulugufe yozungulira komanso yopingasa kawiri)
4. Valavu yowunikira

Mu ma valve awa, gasket sigwiritsidwa ntchito polamulira kayendedwe ka madzi kapena kutseka mkati mwa valavu yokha, koma imayikidwa pakati pa ma flange awiri (pakati pa flange ya valavu yokha ndi flange ya chitoliro). Mwa kulimbitsa ma bolt, mphamvu yokwanira yolumikizira imapangidwa kuti ipange chisindikizo chosasunthika, kuteteza kutuluka kwa cholumikiziracho pa cholumikizira. Ntchito yake ndikudzaza mipata yaying'ono yosagwirizana pakati pa malo awiri a flange achitsulo, kuonetsetsa kuti 100% yatsekedwa pa cholumikiziracho.

II.Kugwiritsa Ntchito Gasket mu Valve "Chophimba Valve"

Ma valve ambiri amapangidwa ndi ma valve ndi zophimba zosiyana kuti zikhale zosavuta kukonza mkati (monga kusintha mipando ya ma valve, ma disc valve, kapena kuchotsa zinyalala), zomwe zimamangiriridwa pamodzi. Gasket imafunikanso pa kulumikizana kumeneku kuti zitsimikizire kuti zitsekedwe bwino.

1. Kulumikizana pakati pa chivundikiro cha valavu ndi thupi la valavu ya valavu ya chipata ndi valavu yozungulira nthawi zambiri kumafuna kugwiritsa ntchito gasket kapena O-ring.
2. Gasket pamalo awa imagwiranso ntchito ngati chisindikizo chosasunthika kuti cholumikiziracho chisatuluke kuchokera m'thupi la valavu kupita mumlengalenga.

III. Gasket yapadera ya mitundu inayake ya ma valavu

Ma valve ena amagwiritsa ntchito gasket ngati gawo la chomangira chawo chachikulu, chomwe chimapangidwa kuti chiphatikizidwe mkati mwa kapangidwe ka valve.

1. Valavu ya gulugufe- gasket ya mpando wa mavavu

• Mpando wa valavu ya gulugufe ndi gasket yozungulira, yomwe imakanikizidwa mkati mwa khoma la thupi la valavu kapena kuyikidwa mozungulira diski ya gulugufe.
• Pamene gulugufediskiikatseka, imakanikiza gasket ya valavu kuti ipange chisindikizo champhamvu (monga gulugufediskiamazungulira).
• Zipangizozo nthawi zambiri zimakhala za rabara (monga EPDM, NBR, Viton) kapena PTFE, zomwe zimapangidwa kuti zigwirizane ndi zinthu zosiyanasiyana zoyatsira ndi kutentha.

2. Valavu ya Mpira-Gasket ya Mpando wa Valuvu

• Mpando wa valavu wa valavu ya mpira ndi mtundu wa gasket, womwe nthawi zambiri umapangidwa kuchokera ku zipangizo monga PTFE (polytetrafluoroethylene), PEEK (polyetheretherketone), kapena mapulasitiki olimbikitsidwa.
• Imapereka chisindikizo pakati pa mpira ndi thupi la valavu, zomwe zimagwiritsidwa ntchito ngati chisindikizo chosasunthika (monga thupi la valavu) komanso chisindikizo champhamvu (monga mpira wozungulira).

IV. Ndi ma valve ati omwe nthawi zambiri sagwiritsidwa ntchito ndi ma gasket?

1. Ma valve olumikizidwa: Thupi la valve limalumikizidwa mwachindunji ku payipi, zomwe zimapangitsa kuti pasakhale kufunika kwa ma flange ndi ma gasket.
2. Ma valve okhala ndi maulumikizidwe olumikizidwa: Nthawi zambiri amagwiritsa ntchito kutseka kolumikizidwa (monga tepi ya zinthu zopangira kapena sealant), zomwe nthawi zambiri zimachotsa kufunika kwa ma gasket.
3. Mavavu a monolithic: Mavavu ena otsika mtengo a mpira kapena mavavu apadera ali ndi thupi lolimba la valavu lomwe silingathe kuchotsedwa, motero alibe gasket yophimba valavu.
4. Ma valve okhala ndi mphete za O kapena ma gasket okulungidwa ndi chitsulo: Mu ntchito zopanikizika kwambiri, kutentha kwambiri, kapena zapadera, njira zotsekera zapamwamba zitha kulowa m'malo mwa ma gasket achikhalidwe osakhala achitsulo.

Chidule cha V.:

Gasket ya valavu ndi mtundu wa chinthu chodula makiyi ambiri, chimagwiritsidwa ntchito kwambiri polumikiza mapaipi a ma valve osiyanasiyana a flange, komanso chimagwiritsidwa ntchito potseka chivundikiro cha valavu ya ma valve ambiri. Posankha, ndikofunikira kusankha chida choyenera cha gasket ndi mawonekedwe ake malinga ndi mtundu wa valavu, njira yolumikizira, yapakati, kutentha ndi kuthamanga.