Chiyambi cha zinthu za valve ya mpira

Zipangizo za mavavu a mpira zimasiyanasiyana kuti zigwirizane ndi mikhalidwe yosiyanasiyana yogwirira ntchito komanso zofunikira pa media. Izi ndi zina mwa zipangizo zodziwika bwino za mavavu a mpira ndi makhalidwe awo:

1. Chitsulo chopangidwa ndi chitsulo

Chitsulo choyera: choyenera kugwiritsidwa ntchito m'madzi, nthunzi, mpweya, gasi, mafuta ndi zinthu zina zokhala ndi mphamvu ya PN≤1.0MPa ndi kutentha -10℃ ~ 200℃. Mitundu yomwe imagwiritsidwa ntchito kwambiri ndi HT200, HT250, HT300, HT350.

Chitsulo chofewa: choyenera kugwiritsidwa ntchito pamadzi, nthunzi, mpweya ndi mafuta okhala ndi mphamvu ya PN≤2.5MPa ndi kutentha -30℃ ~ 300℃. Mitundu yomwe imagwiritsidwa ntchito kwambiri ndi KTH300-06, KTH330-08, KTH350-10.

Chitsulo chodulira: Choyenera PN≤4.0MPa, kutentha -30℃ ~ 350℃ madzi, nthunzi, mpweya ndi mafuta ndi zina zotero. Magiredi omwe amagwiritsidwa ntchito kwambiri ndi QT400-15, QT450-10, QT500-7. Kuphatikiza apo, chitsulo chodulira cha silicon chomwe sichimakhudzidwa ndi asidi ndi choyenera kugwiritsidwa ntchito podulira zinthu zowononga ndi mphamvu ya PN≤0.25MPa komanso kutentha kochepera 120℃.

2. Chitsulo chosapanga dzimbiri

Valavu ya mpira yachitsulo chosapanga dzimbiri imagwiritsidwa ntchito kwambiri m'mapaipi apakati ndi okwera kwambiri, okhala ndi kukana kutentha kwambiri, ndipo amagwiritsidwa ntchito kwambiri m'mafakitale a mankhwala, petrochemical, smelting ndi mafakitale ena. Zipangizo zachitsulo chosapanga dzimbiri zimakhala ndi kukana dzimbiri komanso mphamvu yotentha kwambiri, zoyenera mitundu yosiyanasiyana ya zinthu zowononga komanso malo otentha kwambiri.

3. Zinthu zamkuwa

Aloyi wa mkuwa: Woyenera madzi a PN≤2.5MPa, madzi a m'nyanja, mpweya, mpweya, mafuta ndi zinthu zina, komanso kutentha kwa -40℃ ~ 250℃ nthunzi. Mitundu yomwe imagwiritsidwa ntchito kwambiri ndi ZGnSn10Zn2(tin bronze), H62, Hpb59-1(brass), QAZ19-2, QA19-4(aluminium bronze) ndi zina zotero.

Mkuwa wotentha kwambiri: woyenera kugwiritsa ntchito nthunzi ndi zinthu zamafuta okhala ndi mphamvu ya PN≤17.0MPa ndi kutentha kwa ≤570℃. Mitundu yomwe imagwiritsidwa ntchito kwambiri ndi ZGCr5Mo, 1Cr5Mo, ZG20CrMoV ndi zina zotero.

4. Chitsulo cha kaboni

Chitsulo cha kaboni ndi choyenera kugwiritsidwa ntchito m'madzi, nthunzi, mpweya, haidrojeni, ammonia, nayitrogeni ndi zinthu zamafuta zokhala ndi mphamvu ya PN≤32.0MPa ndi kutentha -30℃ ~ 425℃. Magiredi omwe amagwiritsidwa ntchito kwambiri ndi WC1, WCB, ZG25 ndi chitsulo chapamwamba kwambiri 20, 25, 30 ndi chitsulo cholimba cha 16Mn.

5. Zipangizo zapulasitiki

Vavu ya pulasitiki ya mpira imapangidwa ndi pulasitiki yopangira zinthu zopangira, zomwe ndi zoyenera kuletsa njira yotumizira ndi zinthu zowononga. Mapulasitiki ogwira ntchito bwino monga PPS ndi PEEK nthawi zambiri amagwiritsidwa ntchito ngati mipando ya mavavu a mpira kuti atsimikizire kuti makinawo sakuwonongeka ndi mankhwala omwe amapezeka pakapita nthawi.

6. Zipangizo zadothi

Valavu ya mpira wa ceramic ndi mtundu watsopano wa zinthu za valavu, yokhala ndi kukana dzimbiri komanso kukana kukalamba. Kukhuthala kwa chipolopolo cha valavu kumaposa zofunikira za muyezo wa dziko, ndipo zinthu za mankhwala ndi mphamvu za makina za zinthu zazikulu zimakwaniritsa zofunikira za muyezo wa dziko. Pakadali pano, imagwiritsidwa ntchito popanga magetsi otentha, zitsulo, mafuta, kupanga mapepala, uinjiniya wa zamoyo ndi mafakitale ena.

7. Zipangizo zapadera

Chitsulo chotentha chotsika: choyenera kupanikizika pang'ono PN≤6.4MPa, kutentha ≥-196℃ ethylene, propylene, mpweya wachilengedwe wamadzimadzi, nayitrogeni wamadzimadzi ndi zinthu zina. Mitundu yomwe imagwiritsidwa ntchito kwambiri ndi ZG1Cr18Ni9, 0Cr18Ni9, 1Cr18Ni9Ti, ZG0Cr18Ni9 ndi zina zotero.

Chitsulo chosapanga dzimbiri chosagwira asidi: choyenera asidi wa nitric, acetic acid ndi zinthu zina zokhala ndi mphamvu ya PN≤6.4MPa ndi kutentha kwa ≤200℃. Mitundu yodziwika bwino ndi ZG0Cr18Ni9Ti, ZG0Cr18Ni10 (kukana asidi wa nitric), ZG0Cr18Ni12Mo2Ti, ZG1Cr18Ni12Mo2Ti (kukana asidi ndi urea) ndi zina zotero.

Mwachidule, kusankha zinthu za valavu ya mpira kuyenera kutsimikiziridwa malinga ndi mikhalidwe yeniyeni yogwirira ntchito ndi zofunikira zapakati kuti zitsimikizire kuti valavuyo ikugwira ntchito bwino komanso kukhazikika kwa nthawi yayitali.