Cholinga chogwiritsa ntchito valavu yowunikira ndikuletsa kuyenda kwa cholumikizira kumbuyo kwa cholumikizira, ndipo valavu yowunikira nthawi zambiri imayikidwa pamalo otulukira pampu. Kuphatikiza apo, valavu yowunikira iyeneranso kuyikidwa pamalo otulukira a cholumikizira. Mwachidule, kuti mupewe kuyenda kwa cholumikizira kumbuyo kwa cholumikizira kumbuyo, valavu yowunikira iyenera kuyikidwa pa chipangizo, chipangizo kapena paipi.
Kawirikawiri, ma valve oyezera kukweza oimirira amagwiritsidwa ntchito pa mapaipi opingasa okhala ndi mainchesi 50 mm. Valavu yoyezera kukweza yolunjika imatha kuyikidwa pa mapaipi opingasa komanso oimirira. Valavu yapansi nthawi zambiri imayikidwa pa mapaipi opingasa a pompu yolowera, ndipo sing'anga imatuluka kuchokera pansi kupita pamwamba.
Valavu yoyesera yozungulira ingapangidwe kukhala yogwira ntchito kwambiri, PN imatha kufika 42MPa, ndipo DN imathanso kukhala yayikulu kwambiri, ndipo mphamvu yayikulu imatha kufika kuposa 2000mm. Malinga ndi zipangizo zosiyanasiyana za chipolopolo ndi chisindikizo, ingagwiritsidwe ntchito pa chogwirira ntchito chilichonse komanso kutentha kulikonse. Chogwirira ntchito ndi madzi, nthunzi, gasi, chogwirira ntchito chowononga, mafuta, chakudya, mankhwala, ndi zina zotero. Kutentha kwa chogwirira ntchito ndi pakati pa -196 ~ 800℃.
Malo oyika valavu yoyezera swing si ochepa, nthawi zambiri imayikidwa pa payipi yopingasa, koma imathanso kuyikidwa pa payipi yoyima kapena payipi yopendekera.
Chofunikira pa valavu yowunikira gulugufe ndi kupanikizika kochepa komanso mainchesi akulu, ndipo nthawi yoyikira ndi yochepa. Chifukwa kuthamanga kwa valavu yowunikira gulugufe sikungakhale kwakukulu kwambiri, koma mainchesi oyambira akhoza kukhala akulu kwambiri, omwe amatha kufika pa 2000mm, koma kupanikizika koyambira kuli pansi pa 6.4MPa. Vavu yowunikira gulugufe imatha kupangidwa kukhala mtundu wa wafer, womwe nthawi zambiri umayikidwa pakati pa ma flange awiri a payipi ngati cholumikizira cha wafer.
Malo oyika valavu yowunikira gulugufe si ochepa, akhoza kuyikidwa pa payipi yopingasa, payipi yoyima kapena payipi yopendekera.
Valavu yoyesera ya diaphragm ndi yoyenera mapaipi omwe amatha kugwidwa ndi nyundo yamadzi. Diaphragm imatha kuchotsa nyundo yamadzi yomwe imayamba chifukwa cha kuyenda kwa cholumikizira kumbuyo. Popeza kutentha kogwira ntchito ndi kupanikizika kwa mavavu oyesera diaphragm zimachepetsedwa ndi zinthu za diaphragm, nthawi zambiri amagwiritsidwa ntchito m'mapaipi okhala ndi mphamvu yochepa komanso kutentha kwabwinobwino, makamaka mapaipi amadzi apampopi. Nthawi zambiri, kutentha kogwira ntchito kwa cholumikizira kumakhala pakati pa -20~120℃, ndipo kuthamanga kogwira ntchito kumakhala kochepera 1.6MPa, koma valavu yoyesera diaphragm imatha kukhala ndi mainchesi akulu, ndipo DN yayikulu ikhoza kukhala yoposa 2000mm.
Valavu yoyezera diaphragm yakhala ikugwiritsidwa ntchito kwambiri m'zaka zaposachedwa chifukwa cha magwiridwe ake abwino osalowa madzi, kapangidwe kake kosavuta komanso mtengo wotsika wopanga.
Valavu yoyezera mpira imakhala ndi magwiridwe antchito abwino otsekera, yogwira ntchito modalirika komanso yolimba bwino chifukwa chotsekeracho ndi chozungulira chophimbidwa ndi rabala; ndipo chifukwa chotsekacho chingakhale mpira umodzi kapena mipira ingapo, chingapangidwe kukhala chozungulira chachikulu. Komabe, chotsekacho ndi chozungulira chopanda kanthu chophimbidwa ndi rabala, chomwe sichili choyenera mapaipi amphamvu kwambiri, koma choyenera mapaipi apakati ndi otsika mphamvu.
Popeza chipolopolo cha valavu yoyezera mpira chingapangidwe ndi chitsulo chosapanga dzimbiri, ndipo malo ozungulira chisindikizocho akhoza kuphimbidwa ndi pulasitiki ya PTFE, chingagwiritsidwenso ntchito m'mapaipi okhala ndi zinthu zowononga.
Kutentha kwa mtundu uwu wa valavu yoyezera ndi pakati pa -101~150℃, kuthamanga kwapadera ndi ≤4.0MPa, ndipo mulingo wapakati wapakati ndi pakati pa 200~1200mm.
Nthawi yotumizira: Mar-23-2022
