Ntchito ya mpando wa valve: yomwe imagwiritsidwa ntchito kuthandizira malo otsekedwa kwathunthu a valve core ndikupanga awiri osindikiza.

Ntchito ya Chimbale: Chimbale - chimbale chozungulira chomwe chimakulitsa kukweza ndikuchepetsa kutsika kwamphamvu. Kuwumitsa kukulitsa moyo wautumiki.

Ntchito ya valavu yapakati: Pakatikati pa valve pamagetsikuchepetsa valavundi chimodzi mwa zigawo zikuluzikulu za kulamulira kuthamanga.

Makhalidwe a mpando wa vavu: dzimbiri ndi kuvala kukana; Nthawi yayitali yogwira ntchito; Kukana kuthamanga kwakukulu; High dimensional kulondola; Kukana kwabwino kwambiri pakukankha katundu ndi kutentha kwakukulu; Oyenera magalimoto ambiri okwera, magalimoto opepuka komanso olemera, ma injini a dizilo ndi mainjini osasunthika a Industrial.

Zochita za valve disc: Ili ndi mawonekedwe osinthika kuti ateteze khoma la chipolopolo cha valve kuti lisalowemo. Valavu yapadera ya gulugufe ya clamshell imakhala ndi pini ya agulugufe, yomwe sikuti imangochotsa kuthekera kwa pini ya hinge yomwe imaboola nyumba ya valavu kuti itayike, komanso imapangitsa mpando wa valve kukhala wosavuta kukonzanso chifukwa bulaketi yopangidwa ndi makina ikufanana. pamwamba pa mpando wa valve. Sinthani chimbale/mpando.

Mawonekedwe a valavu yapakati: Pamene phokoso lozungulira likuzungulira, foloko yomwe ili kumapeto kwa chigawo chozungulira imayendetsa mbale yosuntha ya valve kuti itembenuke, kotero kuti dzenje lamadzi pa valve yosuntha likugwirizana ndi dzenje lolowera madzi pakuyenda. mbale ya valve. static valve plate, ndipo pamapeto pake madzi amatuluka kuchokera pachimake chozungulira. Kupyolera m'mabowo, mapangidwewa amagwiritsidwa ntchito kwambiri m'malo oponyera mabomba.

Zowonera pampando wa ma valve: Gwiritsani ntchito zida zosindikizira zotanuka komanso zolumikizira zing'onozing'ono kuti mupeze chidindo chopanda mpweya. Kupanikizika kwa kusindikiza kwa mpando wa vavu kumapangitsa kuti zinthuzo zisokonezeke komanso kufinya pamwamba pazitsulo zomangira zitsulo kuti zitseke kutayikira kulikonse. njira. The permeability wa zipangizo zamadzimadzi ndi maziko a kutayikira pang'ono.

Chidule cha ma valve disc: mphete yosindikizira ya siketi yamitundu. Chitsanzo chothandizira chimawulula mphete yosindikizira ya siketi ya valve disc. Mawonekedwe ake apangidwe ndikuti chisindikizo pakati pa mphete yosindikiza ndi thupi la valve disc ndi chisindikizo cha mizere iwiri. Gawo lautali pamalo osindikizira pakati pa mphete yosindikizira ndi thupi la valve disc ndi malo a ndege a trapezoidal.

Kufotokozera mwachidule kwa valve: Chigawo cha valve ndi gawo la valve lomwe limagwiritsa ntchito kayendetsedwe ka thupi la valve kuti likwaniritse ntchito zofunikira zoyendetsera kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kake.

Gawo lakumapeto lomwe limachotsedwa mu valavu limagwiritsidwa ntchito kuthandizira malo otsekedwa kwathunthu apakati pa valve ndikupanga awiri osindikiza. Nthawi zambiri, valavu ya mpando wa valve ndiyo yomwe imathamanga kwambiri. Mwachitsanzo, mavavu agulugufe amabwera mumitundu yosiyanasiyana ya mipando. Zida zopangira valavu zimatha kupangidwa ndi mphira, pulasitiki, ndi zitsulo zosiyanasiyana, monga: EPDM, NBR, NR, PTFE, PEEK, PFA, SS315, STELLITE, etc.

Zida zomwe ziyenera kuganiziridwa posankha mpando wofewa wa valve ndi:
1) Kugwirizana kwamadzimadzi, kuphatikiza kutupa, kuuma kwamphamvu, permeability ndi kuwonongeka;
2) Kuuma;
3) Kusinthika kosatha;
4) Mlingo wa kuchira pambuyo kuchotsa katundu;
5) Kukhazikika komanso kukakamiza mphamvu;
6) Kusintha kusanachitike kusweka;
7) Elastic modulus.

Chimbale

Disiki ya valve ndi chigawo cha valve, chomwe ndi chimodzi mwa zigawo zazikulu za valve. Imanyamula mwachindunji kuthamanga kwapakati mu valavu. Zida zomwe zimagwiritsidwa ntchito ziyenera kutsatira malamulo a "Valve Pressure and Temperature Class".

Zinthu zomwe zimagwiritsidwa ntchito kwambiri ndi izi:
1. Iron cast iron: Iron cast iron ndi yoyenera madzi, nthunzi, mpweya, gasi, mafuta ndi zofalitsa zina zokhala ndi mphamvu yodziwika PN ≤ 1.0MPa ndi kutentha kwa -10 ° C mpaka 200 ° C. Zomwe zimagwiritsidwa ntchito kwambiri ndi chitsulo chotuwira ndi: HT200, HT250, HT300, ndi HT350.
2. Malleable kuponyedwa chitsulo: oyenera madzi, nthunzi, mpweya ndi mafuta TV ndi mwadzina kuthamanga PN≤2.5MPa ndi kutentha kwa -30 ~ 300 ℃. Maphunziro omwe amagwiritsidwa ntchito nthawi zambiri ndi: KTH300-06, KTH330-08, KTH350-10.
3. Ductile chitsulo: oyenera madzi, nthunzi, mpweya, mafuta ndi TV zina ndi PN≤4.0MPa ndi kutentha -30 ~ 350 ℃. Maphunziro omwe amagwiritsidwa ntchito kwambiri ndi awa: QT400-15, QT450-10, QT500-7.
Poganizira momwe luso lanyumba likuyendera, mafakitale osiyanasiyana ndi osagwirizana, ndipo kuyendera kwa ogwiritsa ntchito nthawi zambiri kumakhala ndi zovuta. Malingana ndi zochitika, tikulimbikitsidwa kuti PN≤2.5MPa ndi zida za valve ziyenera kukhala zitsulo kuti zitsimikizire chitetezo.
4. Acid-resistant high-silicon ductile iron: yoyenera kuwononga media ndi kukakamiza mwadzina PN ≤ 0.25MPa ndi kutentha pansi pa 120 ° C.
5. Zitsulo za carbon: zoyenera zofalitsa monga madzi, nthunzi, mpweya, haidrojeni, ammonia, nayitrogeni ndi mafuta a petroleum omwe ali ndi mphamvu yodziwika bwino PN ≤ 32.0MPa ndi kutentha kwa -30 ~ 425 ° C. Ambiri ntchito sukulu monga WC1, WCB, ZG25, apamwamba zitsulo 20, 25, 30 ndi otsika aloyi structural zitsulo 16Mn.
6. Copper alloy: oyenera madzi, madzi a m'nyanja, mpweya, mpweya, mafuta ndi zofalitsa zina ndi PN≤2.5MPa, komanso nthunzi TV ndi kutentha kwa -40 ~ 250 ℃. Maphunziro omwe amagwiritsidwa ntchito kawirikawiri ndi ZGnSn10Zn2 (malata bronze), H62, Hpb59-1 (mkuwa), QAZ19-2, QA19-4 (aluminiyamu bronze).
7. Kutentha kwambiri kwa mkuwa: koyenera kwa nthunzi ndi mafuta a petroleum ndi kuthamanga kwadzina PN≤17.0MPA ndi kutentha ≤570 ℃. Magiredi omwe amagwiritsidwa ntchito kwambiri ndi ZGCr5Mo, 1Cr5M0, ZG20CrMoV, ZG15Gr1Mo1V, 12CrMoV, WC6, WC9 ndi magiredi ena. Kusankhidwa kwapadera kuyenera kugwirizana ndi kuthamanga kwa valve ndi kutentha kwake.
8. Low-kutentha zitsulo, oyenera kuthamanga mwadzina PN≤6.4Mpa, kutentha ≥-196℃ ethylene, propylene, liquefied gasi, madzi asafe ndi TV zina, zopangidwa ambiri ntchito) zikuphatikizapo ZG1Cr18Ni9, 0Cr18Ni9, 1Cr1NiG9Cr. zitsulo asidi zosagwira zitsulo, oyenera Kuthamanga mwadzina PN≤6.4Mpa, kutentha ≤200℃ asidi asidi nitric, asidi acetic ndi TV zina, zopangidwa ambiri ntchito ndi ZG0Cr18Ni9Ti, ZG0Cr18Ni10 , ZG0Cr18Ni12Mo2Ti, ZG1Cr18Ni12Mo2Ti

valavu core
Chigawo cha valve ndi gawo la valve lomwe limagwiritsa ntchito kayendetsedwe kake kuti likwaniritse ntchito zoyendetsera kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kake.

Gulu
Malingana ndi kayendetsedwe ka kayendetsedwe kake, amagawidwa kukhala mtundu wozungulira (45 °, 90 °, 180 °, 360 °) ndi mtundu womasulira (radial, directional).
Malingana ndi mawonekedwe ake, amatha kugawidwa kukhala ozungulira (valavu ya mpira), conical (valavu ya pulagi), disc (valve ya butterfly, valve valve), yooneka ngati dome (yoyimitsa valve, valve valve) ndi cylindrical (valavu yobwerera).
Nthawi zambiri amapangidwa ndi mkuwa kapena chitsulo chosapanga dzimbiri, palinso mapulasitiki, nayiloni, zoumba, galasi, ndi zina.
Pakatikati pa valve mu valve yochepetsera kuthamanga ndi chimodzi mwazinthu zazikulu zowongolera kuthamanga.