Kuthamanga kozungulira koyenera kofewa Valavu ya pulagi
Kodi valavu ya pulagi yolumikizidwa ndi Inverted pressure balance ndi chiyani?
Valavu yolumikizira yodzola Ili ndi dzenje pakati pa pulagi motsatira mzere wake. Mphepete iyi imatsekedwa pansi ndipo imayikidwa cholumikizira cholumikizira pamwamba. Cholumikizira chimayikidwa m'dzenjemo, ndipo valavu yowunikira pansi pa cholumikizira cholumikizira imaletsa cholumikizira kuti chisayende mobwerera m'mbuyo. Cholumikizira chimatuluka kuchokera pakati pa dzenjelo kudzera m'mabowo a radial kupita ku mipata yamafuta yomwe imatambalala kutalika kwa malo okhala pulagi.
Pofuna kuchepetsa mphamvu ya ma valve a pulagi opangidwa ndi mipando yachitsulo,ma valve olumikizira opangidwa ndi pulagi yokhazikikaapangidwa ndikugwiritsidwa ntchito kwambiri. Kuwonjezera pa makhalidwe a ma valve a pulagi opangidwa ndi mafuta wamba, ma valve a pulagi ogwirizana ndi kupanikizika ali ndi makhalidwe awa:
- 1. Chophimba cha valavu yolumikizidwa bwino ya pulasitiki yolumikizidwa bwino imayikidwa pamalo opindika. Pali valavu yoyang'anira pamwamba pa chophimba. Chophimba chikatsekedwa, chifukwa cha kusiyana kwa malo odulidwa pamwamba ndi pansi pa chophimba, mafuta otsekera omwe amalowetsedwa amachititsa kuti chophimba chikwezedwe mmwamba, kuti chophimba chikhale ndi pamwamba pa chotseka chikhale chotsekedwa bwino.
- 2. Pamene valavu yatsegulidwa, kupanikizika m'chipinda chapansi cha thupi la valavu kumayenderana ndi kupsinjika kwapakati mu payipi. Mafuta otsekera opanikizika kwambiri m'chipinda chapamwamba amachititsa kuti thupi la pulagi likankhidwe pansi, ndipo mpata pang'ono umawonekera pakati pa phula ndi pamwamba pa thupi la valavu, mphamvu ya thupi la pulagi yozungulira imachepa bwino.
- 3. Mu nyengo yotentha kwambiri, kufalikira kwa kutentha kwa pulagi kumatha kuyamwa ndi kukwera ndi kugwa kwake. Valvu ya pulagi yopaka mafuta, ngakhale kugwiritsa ntchito mafuta opaka mafuta kungachepetse mphamvu yotsegulira ndi kutseka, koma kungayambitse kuipitsidwa kwa sing'anga. Chifukwa chake, mafuta otsekedwa amasankhidwa kuti agwirizane ndi momwe amagwirira ntchito.
Zinthu zazikulu za Inverted pressure balance mafuta plug valve
Makhalidwe ndi ubwino waKuthamanga kozungulira koyenera kofewa Valavu ya pulagi
- 1. Chogulitsachi chili ndi kapangidwe koyenera, kusindikiza kodalirika, magwiridwe antchito abwino komanso mawonekedwe okongola.
- 2. Ili ndi kapangidwe kake ka mphamvu yolumikizirana bwino komanso yoyatsa/kuzima pang'onopang'ono.
- 3. Mzere wa mafuta umayikidwa pakati pa thupi la valavu ndi pamwamba pa chisindikizo, zomwe zingalowetse mafuta otsekera kuti awonjezere mphamvu yotsekera.
- 4. Zipangizo za ziwalo ndi kukula kwa ma flanges zitha kukonzedwa moyenera malinga ndi momwe makasitomala amagwirira ntchito, kuti zikwaniritse zosowa zosiyanasiyana za uinjiniya.
Mafotokozedwe aukadaulo a Inverted pressure balance mafuta plug valve
Mafotokozedwe aMa valve olumikizira opangidwa ndi pulagi yokhazikika.
| Kapangidwe ndi kupanga | API 599, API 6D |
| Kukula Kwapadera | NPS 1/2” ~ 24” |
| Kuyeza kwa Kupanikizika | Kalasi 150LB ~ 1500LB |
| Kulumikiza komaliza | Flange (RF, FF, RTJ), Butt Welded (BW), Socket Welded (SW) |
| Kuyeza kutentha kwa kuthamanga kwa magazi | ASME B16.34 |
| Miyeso ya maso ndi maso | ASME B16.10 |
| Gawo la Flange | ASME B16.5 |
| Kuwotcherera matako | ASME B16.25 |
Kugwiritsa ntchito valavu ya pulagi yolumikizidwa ndi kupanikizika kozungulira
Kuthamanga kozungulira koyenera kofewa Valavu ya pulagiimagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana monga mafuta, makampani opanga mankhwala, mankhwala, feteleza, makampani opanga magetsi ndi zina zotero. Imagwiritsidwa ntchito pansi pa mphamvu ya CLASS150-1500LBS, ndipo imagwira ntchito pa kutentha kwa -40~450°C, Madzi, Gasi, Nthunzi ndi Mafuta ndi zina zotero.