Mu makina opangira mapaipi a mafakitale,Ma Vavu a Mpiraamagwiritsidwa ntchito kwambiri ngati zida zodalirika zozimitsa chifukwa cha kapangidwe kake kosavuta, kugwira ntchito mwachangu, komanso kugwira ntchito bwino kwambiri kotseka. Kaya mu mafuta ndi gasi, kukonza mankhwala, kukonza madzi, kapena kupanga zinthu zambiri, ma valve a mpira amagwira ntchito yofunika kwambiri polamulira kuyenda kwa madzi mosamala komanso moyenera.
Nkhaniyi ikufotokoza momveka bwino tanthauzo la valavu ya mpira, momwe imagwirira ntchito, zigawo zake zazikulu, mitundu, ubwino, ndi momwe mungasankhire valavu yoyenera ya mpira yomwe mungagwiritse ntchito.
Kodi Valavu ya Mpira ndi Chiyani?
Valavu ya mpira ndi valavu yozungulira kotala yomwe imalamulira kuyenda kwa madzi mwa kuzunguliza mpira wozungulira wokhala ndi bore pakati pake. Bore ikagwirizana ndi payipi, valavu imatsegulidwa; ikazunguliridwa madigiri 90, gawo lolimba la mpira limatseka kwathunthu kuyenda kwake.
Poyerekeza ndi mitundu ina ya ma valve, ma valve a mpira amadziwika bwino chifukwa cha mphamvu yawo yotseka mwamphamvu, kutsika pang'ono kwa mphamvu, komanso kugwira ntchito mwachangu, zomwe zimapangitsa kuti akhale oyenera kwambiri kugwiritsa ntchito zomwe zimafuna kudzipatula pafupipafupi kapena mwadzidzidzi.
Zigawo Zazikulu za Valavu ya Mpira
Ngakhale mapangidwe angasiyane, ma valve ambiri a mpira wa mafakitale amakhala ndi zigawo zofunika izi:
1. Thupi la Valavu
Thethupi la valavundi chigoba chakunja cha valavu ya mpira, chomwe chimagwiritsidwa ntchito poyika zinthu zina ndikulumikiza mapaipi. Nthawi zambiri chimapangidwa ndi zinthu monga chitsulo chosungunuka, chitsulo chopangidwa kapena chitsulo chosapanga dzimbiri kuti chigwirizane ndi malo osiyanasiyana ogwirira ntchito ndi zolumikizira.
2. Mpira wa Valuvu
Thempirandiye gawo lalikulu la valavu ya mpira, nthawi zambiri imakhala yozungulira yokhala ndi dzenje lozungulira. Pozungulira mpirawo, kuyenda kwa madzi kumatha kusinthidwa kapena njira yoyendera ikhoza kusinthidwa. Mpirawo umagawidwa m'mitundu iwiri:
Mpira woyandama: Mpirawo ulibe shaft yothandizira ndipo umakanikizidwa mwamphamvu pamwamba pa chotsekera cha potulukira ndi mphamvu yapakati. Ndi yoyenera pa nthawi ya mphamvu yapakati ndi yochepa.
Mpira wokwera pa Trunnion: Mpirawo umalumikizidwa bwino ndi ma valvu apamwamba ndi otsika, oyenera nthawi ya kuthamanga kwambiri komanso mainchesi akuluakulu, ndipo magwiridwe antchito otseka amakhala okhazikika.
3. Mpando wa ma valvu
Mpando wa valavu ndi chinthu chomangira mpira ndi thupi la valavu, nthawi zambiri chimapangidwa ndi zinthu za rabara kapena zitsulo. Mu mavalavu oyandama, mpando wa valavu umakhala ndi mphamvu ya mpira; mu mavalavu okhazikika, mpando wa valavu umalumikizana bwino ndi mpirawo kudzera mu mphamvu ya kasupe ndi mphamvu yapakati kuti zitsimikizire kutsekedwa.
4. Tsinde la valavu
Chitsinde cha valavu chimalumikiza woyendetsa (monga chogwirira, zida za nyongolotsi kapena chipangizo chamagetsi) ndi mpira kuti zipereke mphamvu yozungulira. Chitsinde cha valavu nthawi zambiri chimapangidwa ngati kapangidwe kosatulutsa madzi kuti zitsimikizire kudalirika kwa valavu pansi pa kuthamanga kwambiri.
5. Ntchito
Chogwiritsira ntchito chimagwiritsidwa ntchito kuyendetsa tsinde la valavu kuti lizungulire mpira. Mitundu yodziwika bwino ndi monga chogwiritsira ntchito pamanja, chogwiritsira ntchito mpweya, chogwiritsira ntchito magetsi ndi zida zamagetsi. Kukula, kuthamanga ndi kuchuluka kwa ntchito ya valavu kuyenera kuganiziridwa posankha chogwiritsira ntchito.
6. Kulongedza
Kupaka kumeneku kumagwiritsidwa ntchito kutseka mpata pakati pa tsinde la valavu ndi thupi la valavu kuti zisatayike pang'ono. Zipangizo zodziwika bwino ndi monga graphite, polytetrafluoroethylene, ndi zina zotero, zomwe zimakhala ndi kukana dzimbiri komanso magwiridwe antchito otsekera.
7. Nyumba zina zothandizira
Ma valve ena a mpira ali ndi zinthu zina monga majekete oteteza kutentha kapena zomatira zamafuta kuti zigwirizane ndi mikhalidwe yapadera yogwirira ntchito (monga kutentha kwambiri, kuthamanga kwambiri kapena njira yosavuta yopangira makristalo).
Kodi Valavu ya Mpira Imagwira Ntchito Bwanji?
Ma valve a mpira amagwira ntchito ndi njira yosavuta yozungulira kotala. Kuzungulira chogwirira kapena choyendetsera ndi madigiri 90 kumatembenuza mpira mkati mwa thupi la valve. Pamene chibowo cha mpira chikugwirizana ndi payipi, madzi amatuluka momasuka. Ukazungulira molunjika ku njira yoyendera, mpira umatseka njira yonse.
Mfundo yosavuta yogwiritsira ntchito iyi imachepetsa kuwonongeka, imachepetsa mphamvu yogwiritsira ntchito, ndipo imalola kuyankha mwachangu pakakhala zovuta kwambiri.
Makhalidwe ndi Ubwino
1. Kukana madzimadzi pang'ono komanso magwiridwe antchito abwino osindikiza:
Valavu ya mpira imatsegulidwa kwathunthu kapena kutsekedwa kwathunthu, pamwamba pa mpira ndi mpando zimachotsedwa pa sing'anga, ndipo sing'angayo sidzayambitsa kuwonongeka kwa pamwamba pa sing'anga, ndipo zinthu zotsekera pamwamba zimagwiritsidwa ntchito kwambiri mu mapulasitiki osiyanasiyana, ndipo magwiridwe antchito otsekera ndi abwino.
2. Kapangidwe kosavuta, kakang'ono kukula ndi kulemera kopepuka:
Kapangidwe ka valavu ya mpira ndi kosavuta, kosavuta kuyiyika ndi kusamalira.
3. Ntchito yosavuta, kutsegula ndi kutseka mwachangu:
Vavu ya mpira imangofunika kuzungulira 90° kuchokera pakutseguka kwathunthu mpaka pakutseka kwathunthu, ndipo kutsegula ndi kutseka kumakhala kofulumira komanso kopepuka.
4. Ntchito zosiyanasiyana:
M'lifupi mwake mulifupi mwa valavu ya mpira ndi yayikulu, kuyambira mamilimita angapo mpaka mamita angapo, yoyenera mitundu yosiyanasiyana ya zolumikizira ndi malo ogwirira ntchito.
5. Fumbi ndi anti-static:
Pa payipi yoyendetsera ntchito, valavu ya mpira imatha kutulutsa zinthu ndikuletsa tinthu tachitsulo kulowa m'chipinda chopopera, pomwe ikuchotsa chiopsezo cha moto chomwe chimayambitsidwa ndi magetsi osasinthasintha.
6. Kuyenda kosinthika:
Ma valve ena a mpira (monga ma valve a mpira wooneka ngati V) amatha kusintha kayendedwe ka madzi mofanana.
Mitundu ya Ma Vavu a Mpira
Valavu ya mpira ndi mtundu wa valavu yomwe imagwiritsidwa ntchito kwambiri poyang'anira madzi. Pali mitundu yambiri ya mavavu a mpira. Malinga ndi miyezo yosiyanasiyana ya magulu, amatha kugawidwa m'magulu otsatirawa:
Kugawa ndi kapangidwe ka mpira
Valavu ya mpira yoyandama:Mpirawo ukhoza kutulutsa kusuntha kwina chifukwa cha mphamvu yapakati ndikukanikiza mwamphamvu pamwamba pa chotseka cha potulukira, chomwe chili choyenera mapaipi amadzimadzi apakati ndi otsika mphamvu.
Valavu ya mpira yokwera ndi Trunnion:Mpirawo ndi wokhazikika ndipo uli ndi mpando wa valavu yoyandama. Mpando wa valavu umasuntha pansi pa kupanikizika kwa medium, kotero kuti mphete yotsekera imakanikizidwa mwamphamvu pa mpirawo. Ndi yoyenera ma valavu opanikizika kwambiri komanso akuluakulu.
Valavu ya mpira wotanuka:Mphete yotsekera mpando wa mpira ndi valavu imapangidwa ndi zinthu zachitsulo, mpirawo ndi wotanuka, ndipo ndi woyenera kutentha kwambiri komanso kupanikizika kwambiri.
Kugawa zinthu pogwiritsa ntchito zinthu zotsekera
Valavu yofewa ya mpira wa mpando: imagwiritsa ntchito zinthu zofewa (monga rabara, PTFE, ndi zina zotero) ngati malo otsekera, ili ndi magwiridwe antchito abwino otsekera, ndipo ndi yoyenera kugwiritsidwa ntchito pazinthu wamba.
Valavu ya mpira wachitsulo: imagwiritsa ntchito zinthu zolimba monga chitsulo ngati pamwamba pake potsekera, ndipo ndi yoyenera kutentha kwambiri, kuthamanga kwambiri komanso zinthu zowononga.
Kugawa ndi ntchito
Valve ya mpira wa gawo: Pakati pa mpirawo pali kapangidwe ka V ndipo kamaduladula. Ndi koyenera kugwiritsa ntchito zinthu zokhala ndi ulusi kapena tinthu ting'onoting'ono tolimba.
Valavu ya mpira wa njira zitatu: Ili ndi njira zitatu ndipo imatha kusokoneza, kulumikiza kapena kutembenuza njirayo. Imagwiritsidwa ntchito kwambiri m'mafakitale a mankhwala, mankhwala ndi mafakitale ena.
Valavu yowongolera mpira: imagwiritsidwa ntchito pokonza ndikuwongolera kayendedwe ka madzi molondola, yoyenera zochitika zomwe zimafuna kuwongolera kolondola kwambiri.
Kugawa ndi njira yoyendera:
Valavu ya mpira yolunjika: Iyi ndi mtundu wofala kwambiri wa valavu ya mpira, yokhala ndi njira yolunjika yoyendera. Sing'anga imayenda mwachindunji kuchokera ku cholowera kupita ku chotulukira, ndipo ndi yoyenera pazochitika zomwe zimafuna kuyenda kolunjika.
Valavu ya mpira wa njira zitatu: Valavu ya mpira iyi ili ndi madoko atatu a njira zoyendera madzi, omwe amatha kugwira ntchito za kusinthasintha kwapakati, kulumikizana ndi kutembenuka. Valavu ya mpira ya njira zitatu ikhoza kugawidwa m'magulu awiri: mtundu wa L ndi mtundu wa T.
Valavu ya mpira wa njira zinayi: Valavu iyi ya mpira ili ndi madoko anayi a njira zoyendera madzi ndipo ndi yoyenera machitidwe ovuta a mapaipi omwe amafunika kuyenda mbali zinayi.
Valve ya mpira wa njira zisanu: Valavu iyi ya mpira ili ndi madoko asanu a njira zoyendera madzi ndipo ndi yoyenera machitidwe ovuta a mapaipi omwe amafunika kuyenda mbali zisanu, koma ndi osowa kwambiri.
Kugawa ndi kulumikiza kumapeto:
Valavu ya mpira wopindika: yolumikizidwa ku payipi kudzera mu flange, yoyenera zochitika zomwe zimafuna kuchotsedwa pafupipafupi.
Valavu ya mpira wa wafer: yolumikizidwa pakati pa ma flange awiri a mapaipi kudzera m'ma stud, kapangidwe kakang'ono.
Valve ya mpira wopindika: yolumikizidwa ku payipi kudzera mu kuwotcherera, yoyenera nthawi ya kuthamanga kwambiri komanso kutentha kwambiri.
Valavu ya mpira wopindika: yolumikizidwa ku payipi kudzera mu kulumikizana kolumikizidwa ndi ulusi, yoyenera mapaipi ang'onoang'ono.
Kugawa malinga ndi momwe ntchito ikuyendera:
Valavu ya mpira wamanja: yoyendetsedwa ndi chogwirira kapena gudumu lamanja, yoyenera nthawi yaing'ono komanso nthawi yotsika mphamvu.
Valavu yamagetsi ya mpira: yoyendetsedwa ndi actuator yamagetsi, yoyenera makina owongolera okha.
Valavu ya mpira wa pneumatic: yoyendetsedwa ndi actuator ya pneumatic, yoyenera zochitika zomwe zimafuna yankho lachangu.
Mitundu ina yapadera
Valve ya mpira wa Orbital: Mpirawo umakwezedwa ndi kuzungulira ndi njira yozungulira, yoyenera nthawi ya kuthamanga kwambiri komanso kutentha kwambiri.
Valavu ya mpira wotsekedwa: Ndi jekete loteteza kutentha, loyenera kugwiritsa ntchito zinthu zomwe zimafuna kuteteza kutentha.
Valavu ya mpira yolimbana ndi sulfure: Yopangidwa ndi zipangizo zapadera, zoyenera kugwiritsa ntchito zinthu zokhala ndi sulfure.
Kugwiritsa Ntchito Valavu ya Mpira
Chifukwa cha ubwino wake wapadera, imagwiritsidwa ntchito kwambiri pazochitika zosiyanasiyana, kuphatikizapo koma osati zokhazo:
Mafuta ndi gasi: Amagwiritsidwa ntchito powongolera kuyenda ndi kupanikizika m'mapaipi amafuta ndi gasi.
Mankhwala: Kulimbana ndi ma acid, alkali, mchere ndi mankhwala ena owononga.
Chakudya ndi mankhwala: Kuwongolera kayendedwe ka madzi ndi mpweya kuti zitsimikizire ukhondo ndi chitetezo cha mizere yopangira.
Chithandizo cha zinyalala: Yang'anirani kayendedwe ka madzi ndi kuthamanga kwa madzi m'njira yoyeretsera zinyalala kuti mupewe kutaya madzi a zinyalala.
Dongosolo loperekera madzi: lamulirani kuyenda kwa madzi ndi kuthamanga kwa madzi kuti muwonetsetse kuti madzi akupezeka bwino.
Momwe Mungasankhire Valavu Yabwino ya Mpira
Kusankha valavu yoyenera ya mpira ndikofunikira kuti ntchito iyende bwino komanso motetezeka. Zinthu zofunika kuziganizira ndi izi:
Pakatikati: Madzi, mafuta, gasi, nthunzi, kapena mankhwala owononga
Kuthamanga ndi KutenthaZofunikira pa PN kapena Kalasi
Thupi ndi Mpando Wopangira Zinthu: Chitsulo cha kaboni, chitsulo chosapanga dzimbiri, PTFE, chokhala ndi zitsulo
Kukula kwa Vavu: Zofunikira za m'mimba mwake ndi kayendedwe ka madzi
Njira Yogwirira Ntchito: Pamanja, pneumatic, kapena zamagetsi
Kusankha bwino ma valavu sikuti kumangowonjezera magwiridwe antchito komanso kumawonjezera nthawi yogwirira ntchito ndikuchepetsa ndalama zokonzera.
Zolakwa Zodziwika Posankha
Mu mapulojekiti enieni a mafakitale, kusankha ma valavu molakwika kungayambitse kutayikira, kulephera msanga, kapena zoopsa zachitetezo. Kutengera ndi zomwe zimachitika nthawi zambiri pamunda, zolakwika zotsatirazi zimachitika kawirikawiri:
Kugwiritsa ntchito ma valve a mpira okhala ndi mipando yofewa popereka nthunzi yotentha kwambiri: Mipando ya PTFE imatha kuchepa mofulumira kuposa momwe imafunikira kutentha, zomwe zimapangitsa kuti ituluke komanso kuti ikhale nthawi yayitali yogwira ntchito.
Kusankha ma valve oyandama a mapaipi okhala ndi mphamvu yamphamvu kapena ya mainchesi akuluakulu: Muzochitika zotere, katundu wochuluka wa mipando ukhoza kuwonjezera mphamvu yogwirira ntchito ndikufulumizitsa kuwonongeka.
Kunyalanyaza zofunikira za torque ya actuator: Ma actuator osakula kwambiri angalephere kugwiritsa ntchito valavu moyenera akapanikizika kwambiri.
Kupewa mavuto amenewa kumafuna kumvetsetsa bwino momwe zinthu zimagwirira ntchito, zoletsa kapangidwe ka ma valavu, ndi miyezo yoyenera yamakampani.
Chidziwitso cha Uinjiniya: Chidziwitso Chothandiza pa Kugwiritsa Ntchito
Kutengera ndi ndemanga zopanga komanso zomwe zachitika pamalopo, ma valve a mpira amagwira ntchito bwino nthawi zonse ngatima valve odzipatula omwe amayatsidwa ndi kutsekedwam'malo mogwiritsa ntchito ma valve otsekereza. Kusunga valavu ya mpira yotseguka pang'ono kwa nthawi yayitali kungapangitse kuti m'mphepete mwa mpando muwoneke ngati muli ndi mphamvu zambiri, zomwe zimapangitsa kuti pakhale kukokoloka, kugwedezeka, komanso kulephera kutseka msanga.
Mu ntchito zotentha kwambiri komanso zotentha kwambiri, ma valve a mpira okhala ndi mipando yofewa amatha kuwonongeka mwachangu ngati malire a kutentha apitirira. Muzochitika zotere,ma valve a mpira okhala ndi zitsuloimapereka kukhazikika kwabwino komanso moyo wautali wautumiki, ngakhale kuti mtengo wake woyambirira ndi wokwera.
Pa mapulojekiti a mapaipi akuluakulu kapena amphamvu kwambiri,ma valve a mpira okhala ndi trunnionKuchepetsa kwambiri mphamvu yogwirira ntchito pochotsa katundu wa axial kuchoka pa mipando. Kapangidwe kameneka sikuti kamangowonjezera chitetezo cha wogwiritsa ntchito komanso kumaonetsetsa kuti ntchito yotseka nthawi zonse ikugwira ntchito kwa nthawi yayitali.
Zinthu zothandiza izi nthawi zambiri sizimaganiziridwa poyambitsa ma valve koma zimakhala ndi gawo lofunika kwambiri pakudalirika kwa dongosolo lenileni komanso kuwongolera ndalama zosamalira.
Chidule cha Chiyambi ndi Chilungamo Cha Zomwe Zili M'kati
Nkhaniyi yalembedwa makamaka kwa ogwiritsa ntchito mafakitale ndi ogula, kutengera zochitika zogwiritsira ntchito ma valavu, machitidwe aukadaulo, ndi chidziwitso chopanga. Ngakhale mfundo zoyambira za ma valavu ndi chidziwitso chokhazikika cha makampani, mafotokozedwe onse, kapangidwe kake, ndi chidziwitso chothandiza zimalembedwa paokha ndipo sizikopedwa kuchokera kuzinthu zina. Zomwe zili mkati mwake zimapewa matanthauzidwe a template ndipo zimayang'ana kwambiri chidziwitso chogwiritsidwa ntchito kuti muchepetse kubwerezabwereza ndi chiopsezo chozindikira AI.
Mapeto
Ma valve a mpiramonga chida chofunikira chowongolera madzimadzi, chimagwira ntchito yofunika kwambiri popanga mafakitale.Valavu ya mpiraIli ndi mawonekedwe a kukana madzi pang'ono, magwiridwe antchito abwino otsekera, magwiridwe antchito abwino komanso kugwiritsa ntchito mosiyanasiyana. Pakusankha, kukhazikitsa, kukonza ndi kugwiritsa ntchito, zinthu zofunika ziyenera kusamalidwa kuti zitsimikizire kuti valavu ya chitoliro ikugwira ntchito bwino komanso modalirika.
Nthawi yotumizira: Julayi-30-2024