Onani Chithunzi Chachikulu
Machitidwe a mapaipi sakwanira popanda ma valve a mafakitale.Zimabwera mosiyanasiyana komanso mosiyanasiyana chifukwa zimafunikira kukwaniritsa zosowa zosiyanasiyana.
Ma valve a mafakitale amatha kugawidwa molingana ndi ntchito yawo.Pali ma valve amasiya kapena kuyambitsa kutuluka kwa media;pali ena amene amalamulira kumene madzimadzi amayenda.Palinso ena omwe amatha kusiyanasiyana kuchuluka kwa media.
Kusankha valavu yoyenera ndikofunikira kwambiri pantchito yamakampani.Mtundu wolakwika ungatanthauze kuti dongosolo latsekedwa kapena dongosolo likugwira ntchito.
Kodi Ma Valves A Throttling
Valavu yopumira imatha kutseguka, kutseka ndikuwongolera kuyenda kwa media.Ma valve othamanga ndi ma valve owongolera.Anthu ena amagwiritsa ntchito mawu oti "control valves" kutanthauza ma valve othamanga.Chowonadi ndi chakuti, pali mzere wosiyana wofotokozera ziwirizi.Ma valve othamanga amakhala ndi ma disc omwe samangoyimitsa kapena kuyambitsa media.Ma disks awa amathanso kuwongolera kuchuluka, kupanikizika ndi kutentha kwa media zomwe zimadutsa pamalo aliwonse omwe atchulidwa.
Ma valve a throttling adzakhala ndi kuthamanga kwapamwamba kumapeto kwina ndi kutsika kochepa kumapeto kwake.Izi zimatseka valavu, malingana ndi kuchuluka kwa kupanikizika.Chitsanzo chimodzi chotere ndi valavu ya diaphragm.
Kumbali inayi, ma valve owongolera amawongolera kuyenda kwa media pogwiritsa ntchito actuator.Sizingagwire ntchito popanda imodzi.
Kupanikizika ndi kutentha kumasokoneza kuyenda kwa media kotero kuti ma valve owongolera amawongolera izi.Komanso, ma valvewa amatha kusintha kayendedwe kake kapena kupanikizika kuti agwirizane ndi zofunikira zamapaipi.
M'lingaliro limeneli, ma valve olamulira ndi ma valve apadera ogwedeza.Izi zikunenedwa, ma valve owongolera amatha kugunda koma si ma valve onse owongolera omwe ali ma valve owongolera.
Chitsanzo chabwino kwambiri ndi ma hydraulic system pomwe mphamvu yakunja imayenera kutulutsa vacuum kuti mpweya ulowe mu valve.
The Throttling Mechanism
Pamene payipi imagwiritsa ntchito valavu yopukutira, kuchuluka kwa media media kumasintha.Potsegula pang'ono kapena kutseka valavu, pali choletsa pakuyenda kwamadzimadzi.Choncho, ulamuliro wa media.
Izi zimaphatikizanso zowulutsa mu valve yotsegulidwa pang'ono.Mamolekyulu a zoulutsira nkhani amayamba kusekana.Izi zimapanga kukangana.Kukangana uku kumachepetsanso kuthamanga kwa media pamene ikudutsa mu valve.
Kuti tifotokoze bwino, taganizirani za payipi ngati payipi ya dimba.Akayatsa, madziwo amatuluka molunjika papayipi popanda choletsa chilichonse.Kuthamanga sikuli kolimba.Tsopano, taganizirani za valavu ngati chala chachikulu chomwe chikuphimba pakamwa pa payipi.
Madzi otuluka amasintha liwiro ndi kuthamanga chifukwa cha kutsekeka (chala chachikulu).Ndi mphamvu kwambiri kuposa madzi amene sanadutse valavu panobe.M'lingaliro loyambirira, uku ndikugwedeza.
Kuti izi zigwiritsidwe ntchito pamapaipi, makinawa amafunikira mpweya wozizirira kuti ukhale wotentha kwambiri.Ndi valve throttling m'malo, kutentha kwa mpweya kumawonjezeka.Izi zimachitika chifukwa cha mamolekyu akusisitana wina ndi mzake pamene akuyesera kuti atuluke mu valavu kudzera potsegula pang'ono.
Chitsime: https://www.quora.com/What-is-the-throttling-process
Mapulogalamu a Throttling Valve
Pali mitundu ingapo yogwiritsira ntchito ma throttling valves.Nthawi zambiri munthu amatha kupeza ma valve othamanga pamafakitale otsatirawa:
● Makina owongolera mpweya
● Firiji
● Ma hydraulic
● Mapulogalamu a Steam
● Mapulogalamu otentha kwambiri
● Kugwiritsa ntchito mankhwala
● Kugwiritsa ntchito mankhwala
● Ntchito zokonza chakudya
● Makina amafuta amafuta
Mavavu Omwe Angagwiritsidwe Ntchito Popondereza
Si ma valve onse omwe ali ndi throttling.Mapangidwe a ma valve ndi chimodzi mwa zifukwa zazikulu zomwe ma valve ena amakhala osayenera.
Globe
Ma valve a Globe ndi amodzi mwa mitundu yotchuka kwambiri ya ma valve.Valve yapadziko lonse lapansi imagwiritsidwa ntchito ngati valavu yopumira.Izi ndi za banja la valve yoyenda.Globe disk imasunthira mmwamba kapena pansi pokhudzana ndi mpando wa mphete woyima.Diski yake kapena pulagi imayendetsa kuchuluka kwa media zomwe zingadutse.
Malo omwe ali pakati pa mpando ndi mphete amalola kuti valavu yapadziko lonse igwire ntchito ngati valavu yothamanga kwambiri.Pali kuwonongeka kochepa pampando ndi disk kapena pulagi chifukwa cha mapangidwe ake.
Zolepheretsa
Chifukwa cha mapangidwe a valavu yapadziko lonse, ikagwiritsidwa ntchito pamagetsi apamwamba, imafunika makina opangira magetsi kapena magetsi kuti asunthe tsinde ndikutsegula valavu.Kutsika kwapanikizidwe ndi kuwongolera kwamayendedwe osiyanasiyana ndizinthu ziwiri zomwe zimafunikira pakuwongolera bwino kwamphamvu.
Palinso kuthekera kwa kutayikira chifukwa cha kuonongeka mpando monga izi amabwera kukhudzana kwathunthu ndi otaya TV.Valve iyi imakhalanso ndi zotsatira za kugwedezeka, makamaka pamene TV ndi gasi.
Gulugufe
Ma valve a butterfly amawoneka ngati valavu yachipata.Koma, chimodzi mwa kusiyana kwawo kosiyana ndi valavu ya gulugufe ndi ya banja la valavu ya kotala.
Mphamvu yakunja imagwira ntchito pa actuator.Actuator iyi imalumikizidwa ku tsinde lomwe limalumikizana ndi diski.
Pakati pa ma valve ambiri, valavu ya butterfly ndiyo yoyenera kwambiri kugwedeza.Kutembenuka kokwanira kotala kumatha kutsegula kapena kutseka valavu.Kuti throttling ichitike, zimangofunika kutsegula pang'ono kuti media idutse.
Zolepheretsa
Chimodzi mwa zolephera za ma valve a butterfly ndikuti disc nthawi zonse imakhala panjira ya media media.Chimbale chonsecho chimakonda kukokoloka.Komanso, chifukwa cha mapangidwewa, kuyeretsa ziwalo zamkati kumakhala kovuta.
Kuti valavu ya gulugufe ikhale yogwira mtima, kuwerengera koyenera kuyenera kuzindikira kuthamanga kwakukulu ndi kupanikizika.
Geti
Vavu yachipata ndi ya banja la valve yoyenda.Ma valve a zipata ali ndi ma disc omwe amasunthira mmwamba ndi pansi kuti atsegule ndi kutseka ma valve.Amagwiritsidwa ntchito makamaka ngati ntchito zoyatsa zotseka.Ma valve a zipata ali ndi malire ngati ma valve othamanga.
Pamalo otsekeka kwambiri, kugunda kumachitika chifukwa kumachepetsa kuyenda kwa media.Izi zimawonjezera liwiro la media pamene zikutuluka mu valve.
Zolepheretsa
Nthawi yokhayo yomwe muyenera kugwiritsa ntchito ma valve olowera pachipata ndikugwedeza ndi pomwe valavu yatsekedwa 90%.Kutseka pafupifupi 50% sikungakwaniritse zomwe mukufuna.Choyipa chogwiritsa ntchito valve yachipata ndikuti kuthamanga kwa media kumatha kuwononga nkhope ya disc.
Kuonjezera apo, ma valve a pakhomo sayenera kugwiritsidwa ntchito ngati ma valve othamanga kwa nthawi yaitali.Kupanikizika kumatha kung'amba mpando wa pachipata kuti valavu isathe kuzimitsanso.Chinanso, ngati sing'angayo ndi yamadzimadzi, pali kugwedezeka.Kugwedezeka uku kungakhudzenso mpando.
kutsina
Imaganiziridwa ngati imodzi mwamapangidwe osavuta, valavu ya pinch ili ndi liner yofewa ya elastomer.Amatsina kuti atseke pogwiritsa ntchito kuthamanga kwamadzimadzi.Chifukwa chake, dzina lake.Pokhala m'gulu loyenda mzere, valavu ya pinch ndi yopepuka komanso yosavuta kuyisamalira.
Ma valve a pinch ndi othandiza kwambiri pamene sterility ndi ukhondo ndizofunikira.
Tsinde limamangiriridwa ku kompresa yomwe ili pamzere ndendende pamwamba pa liner.Valve yotsina imatseka pamene kompresa imatsikira ku liner.
Kuthamanga kwa valve ya pinch nthawi zambiri kumakhala pakati pa 10% mpaka 95% mphamvu yothamanga.Mtengo wake wabwino kwambiri ndi 50%.Izi ndichifukwa cha mzere wofewa komanso makoma osalala.
Zolepheretsa
Valve iyi siigwira bwino ntchito pomwe media ili ndi tinthu zakuthwa, makamaka pomwe valavu ili ndi 90% yotsekedwa.Izi zitha kuyambitsa misozi mu liner ya elastomer.Vavu iyi si yoyenera kwa gasi media, komanso kuthamanga kwambiri komanso kugwiritsa ntchito kutentha.
Diaphragm
Valavu ya diaphragm ndiyofanana kwambiri ndi valavu ya pinch.Komabe, kachipangizo kake kochititsa chidwi ndi kachidutswa kakang’ono ka elastomer m’malo mwa liner ya elastomer.Mutha kuwona momwe ma valve a diaphragm amagwirira ntchito muvidiyoyi.
Mu valavu ya pinch, compressor imatsikira mu liner ndiyeno imatsina kuti asiye kutuluka kwa media.Mu valavu ya diaphragm, diaphragm disk imakanikiza pansi pa valve kuti itseke.
Kupanga koteroko kumapangitsa kuti tinthu tating'onoting'ono tidutse mu valve.Pakati pa valavu yowongoka kupyola mu diaphragm ndi valavu ya diaphragm yamtundu wa weir, yotsirizirayi ndi yabwinoko kugunda.
Zolepheretsa
Ngakhale imatha kupereka chisindikizo chosadukiza, ma valve a diaphragm amatha kupirira kutentha pang'ono komanso kupanikizika.Kuonjezera apo, sichingagwiritsidwe ntchito pazochitika zambiri.
Singano
Valve ya singano imafanana ndi ma valve a globe.M'malo mwa diski yofanana ndi dziko lapansi, valavu ya singano imakhala ndi disk ngati singano.Izi ndizoyenera kwambiri pamapulogalamu omwe amafunikira kuwongolera bwino.
Kuonjezera apo, ma valve a singano ndi owongolera bwino ma valve ang'onoang'ono.Madziwo amapita molunjika koma amatembenuza 900 ngati valve ikutsegula.Chifukwa cha mapangidwe 900 amenewo, mbali zina za diski zimadutsa potsegula mipando isanatseke.Mutha kuwona makanema ojambula a pinch valve 3D apa.
Zolepheretsa
Mavavu a singano ndi osavuta kugwiritsa ntchito mafakitale.Izi zikunenedwa, media media thicker ndi viscous media sizoyenera mavavu a singano.Kutsegula kwa valavu iyi kumakhala kochepa ndipo tinthu tating'onoting'ono timatsekeredwa m'bowo.
Momwe Mungasankhire Vavu Yoyimitsa
Mtundu uliwonse wa valve yothamanga ili ndi ubwino wake ndi zolephera.Kumvetsetsa cholinga chogwiritsira ntchito valavu yothamanga nthawi zonse kumachepetsa zosankha zamtundu woyenera wa valve yothamanga.
Kukula kwa Vavu
Kukula kwa valve yoyenera kumatanthauza kuthetsa nkhani zamtsogolo za valve.Mwachitsanzo, valavu yokulirapo kwambiri imatanthauza kuchepa kwa mphamvu.Mwinamwake, ingakhale pafupi ndi malo ake otsekedwa.Izi zimapangitsa kuti valavu ikhale yosavuta kugwedezeka komanso kukokoloka.
Kuphatikiza apo, valavu yomwe ndi yayikulu kwambiri imakhala ndi zowonjezera zowonjezera monga kusintha kwa mapaipi.Zomangamangazo ndizokwera mtengo.
Zida Zomangamanga
Zida za thupi la valve ndizofunikira kwambiri posankha valavu yogwedeza.Iyenera kukhala yogwirizana ndi mtundu wa zinthu zomwe zingadutse.Mwachitsanzo, makina opangira mankhwala ayenera kudutsa mu valve yosawononga.Media yomwe imakonda kutentha kwambiri kapena kupanikizika iyenera kudutsa muzitsulo zolimba zokhala ndi zokutira mkati.
Zochitika
Actuation imakhalanso ndi gawo lalikulu pakusankha valavu yoyenera.M'mapaipi ogwiritsira ntchito mapaipi, pali zochitika zomwe zimakhala zovuta kwambiri.Makina ogwiritsira ntchito pamanja sangakhale okhoza kutsegula kapena kutseka valve chifukwa cha izo.
Kulumikizana
Momwe valavu imagwirizanirana ndi mapaipi ndikuyeneranso kulingalira.Ndikofunika kuti mugwirizane ndi kugwirizana kwa mapaipi omwe alipo kusiyana ndi mapaipi omwe akugwirizana ndi valve.
Ndizokwera mtengo kwambiri kuti zigwirizane ndi valavu zomwe zilipo kale.Mwachitsanzo, pamene mapeto a chitoliro ali ndi ma flanges, valavu iyeneranso kukhala ndi zolumikizira kumapeto.
Miyezo ya Makampani
Miyezo yamakampani ndi yofunika chimodzimodzi.Pali miyezo ya mtundu wazinthu zomwe zingagwiritsidwe ntchito pazinthu zinazake.Palinso miyezo yolumikizira kumapeto kapena makulidwe achitsulo kuti agwiritse ntchito valavu.
Miyezo yotere imabweretsa chitetezo ku ntchito.Nthawi zambiri pamakhala kuwonjezeka kwa kutentha ndi kupanikizika pogwiritsa ntchito ma valve othamanga.Mwakutero, ndikofunikira kumvetsetsa miyezo yotereyi yachitetezo cha aliyense.
Powombetsa mkota
Ngakhale ma valve ambiri ali ndi mphamvu zochepa zogwedeza, wina samangowagwiritsa ntchito momwemo.Kuti valavu ikhale nthawi yayitali, ndi bwino kudziwa kuti ndi mtundu wanji wa valve womwe uli woyenera pa ntchito inayake yogwedeza.
Zida zopangira ma valve: The Ultimate Guide: Best Valve Manufacturers ku China
Nthawi yotumiza: Feb-25-2022