Bawuloli masu jurewa na malam buɗe idosu ne nau'in bawul ɗin malam buɗe ido da aka fi amfani da shi a bututun masana'antu. Suna amfani da kayan roba kamar roba a matsayin saman rufewa, suna dogara da "juriyar abu" da "matsewa ta tsari" don cimma aikin rufewa.
Wannan kasidar ba wai kawai ta gabatar da tsari, amfani, da kayan aiki ba, har ma ta yi nazari a kansu daga ilimin gabaɗaya zuwa zurfin tunani.
1. Fahimtar Asali Game da Bawuloli Masu Juriya na Buɗaɗɗen Malam (Bayani Mai Takaitawa)
1.1 Tsarin Asali
Jikin Bawul:Yawanci nau'in wafer, nau'in lug, ko nau'in flanged.
Faifan bawul:Farantin ƙarfe mai zagaye wanda ke matse wurin zama na roba idan an rufe shi don ƙirƙirar hatimi.
Wurin zama na bawul:An yi shi da kayan roba kamar NBR/EPDM/PTFE/Robber Lined, yana aiki tare da faifan bawul.
Tushen bawul:Yawanci ana amfani da tsarin shaft ɗaya ko shaft biyu.
Mai kunnawa:Riƙewa, kayan tsutsa, na'urar lantarki, na'urar numfashi, da sauransu.
1.2 Siffofi Na Yau Da Kullum
Matakin rufewa yawanci ba ya kaiwa ga ɓuya.
Ƙananan farashi da kuma aikace-aikace iri-iri.
Ana amfani da shi galibi a cikin tsarin matsa lamba mai sauƙi zuwa matsakaici kamar ruwa, kwandishan, HVAC, da masana'antun sinadarai masu sauƙi.
2. Ra'ayoyi marasa kyau game da bawuloli masu juriya ga malam buɗe ido
2.1 Ma'anar rufewa ita ce juriyar roba
Mutane da yawa sun yi imani da cewa: "Kujerun da ke da juriya suna dogara ne akan juriyar roba don rufewa."
Hakikanin ma'anar rufewa shine:
Jikin bawul + nisan tsakiyar bawul ɗin tushe + kauri faifan bawul + hanyar saka wurin zama na bawul
Tare za a ƙirƙiri "yankin matsi mai sarrafawa".
Kawai a faɗi:
Robar ba za ta iya yin sako-sako ko matsewa sosai ba; tana dogara ne akan "yankin matsewa" wanda aka sarrafa ta hanyar daidaiton injin.
Me yasa wannan yake da mahimmanci?
Rashin isasshen matsi: Bawul yana zubewa idan an rufe shi.
Matsi mai yawa: Ƙarfin juyi mai yawa, tsufa da wuri na roba.
2.2 Shin siffar faifan da ta fi sauƙi ta fi amfani da makamashi?
Ra'ayi gama gari: Faifan bawul masu laushi na iya rage asarar matsi.
Wannan gaskiya ne bisa ga ka'idar "memechanics", amma ba ya aiki gaba ɗaya ga ainihin aikace-aikacen Bawul ɗin Butterfly Mai Juriya.
Dalili:
Babban tushen asarar matsi a cikin bawuloli na malam buɗe ido ba shine siffar faifan bawul ba, amma "tasirin ramin micro-channel" wanda ya faru sakamakon matsewar robar wurin zama na bawul. Faifan bawul ɗin da yake siriri sosai zai iya kasa samar da isasshen matsin lamba na taɓawa, wanda hakan na iya haifar da layukan rufewa da zubewa.
Faifan bawul mai laushi zai iya haifar da damuwa mai tsanani a kan robar, wanda hakan zai rage tsawon rayuwarsa.
Saboda haka, ƙirar bawuloli masu laushi na malam buɗe ido yana fifita "tsarin layin rufewa" fiye da sauƙaƙewa.
2.3 Bawuloli masu laushi na malam buɗe ido suna da tsarin tsakiya kawai
Sau da yawa ana faɗa a yanar gizo cewa bawuloli masu ban mamaki na malam buɗe ido ya kamata su yi amfani da hatimin ƙarfe mai tauri.
Duk da haka, ƙwarewar injiniyanci ta zahiri ta nuna cewa:
Bambancin yanayi biyu yana inganta tsawon rayuwar bawuloli na Butterfly mai ƙarfi sosai.
Dalili:
Bambancin da ke tsakanin bawul biyu: Faifan bawul ɗin yana taɓa robar ne kawai a lokacin rufewa na ƙarshe na 2-3°, wanda hakan ke rage gogayya sosai.
Ƙananan ƙarfin juyi, wanda ke haifar da zaɓin mai kunnawa mafi araha.
2.4 Babban abin da ake la'akari da shi ga kujerar roba shine "sunan kayan"*
Yawancin masu amfani suna mai da hankali ne kawai akan:
EPDM
NBR
Viton (FKM)
Amma abin da ya shafi rayuwar mutum shi ne:
2.4.1 Taurin bakin teku:
Misali, taurin Shore A na EPDM ba batun "laushi mafi kyau ba ne." Yawanci, 65-75 shine mafi kyawun ma'aunin ma'auni, wanda ke kaiwa ga rashin zubar ruwa a ƙaramin matsin lamba (PN10-16).
Taushi sosai: Ƙarfin juyi kaɗan amma cikin sauƙi ya tsage. A cikin kololuwar matsin lamba mai yawa (>2 MPa) ko muhallin da ke cike da rudani, roba mai laushi tana matsewa sosai, wanda ke haifar da lalacewar fitar da iska. Bugu da ƙari, yanayin zafi mai yawa (>80°C) yana ƙara laushi robar.
Tauri sosai: Yana da wahalar rufewa, musamman a tsarin ƙarancin matsi (<1 MPa), inda robar ba za ta iya matsewa sosai don samar da hanyar sadarwa ta iska ba, wanda ke haifar da zubar ruwa mai yawa.
2.4.2 Zafin Vulcanization da lokacin warkarwa
Zafin Vulcanization da lokacin warkarwa suna sarrafa haɗin sarƙoƙin ƙwayoyin roba, wanda ke shafar daidaiton tsarin hanyar sadarwa da aiki na dogon lokaci. Matsakaicin kewayon shine 140-160°C, mintuna 30-60. Yawan zafin jiki ko ƙasa da yawa yana haifar da rashin daidaituwar warkarwa da kuma saurin tsufa. Kamfaninmu gabaɗaya yana amfani da vulcanization mai matakai da yawa (wanda ake riga an goge shi a 140°C, sannan bayan an goge shi a 150°C). 2.4.3 Saitin Matsi
Saitin matsi yana nufin rabon nakasar dindindin da roba ke fuskanta a ƙarƙashin matsin lamba akai-akai (yawanci matsi 25%-50%, an gwada shi a 70°C/22h, ASTM D395) kuma ba zai iya murmurewa gaba ɗaya ba. Matsakaicin ƙimar da aka buƙata don saitin matsi shine <20%. Wannan ƙimar ita ce "ƙura" don rufe bawul na dogon lokaci; matsin lamba na dogon lokaci yana haifar da gibin dindindin, yana samar da wuraren zubewa.
2.4.4 Ƙarfin Taurin Kai
A. Ƙarfin Taurin Kai (yawanci sama da 10 MPa, ASTM D412) shine matsakaicin matsin lamba da robar za ta iya jurewa kafin karyewar taurin kai, kuma yana da mahimmanci ga juriyar lalacewa da juriyar tsagewa na kujerar bawul. Yawan robar da kuma rabon baƙin carbon yana ƙayyade ƙarfin taurin kai na kujerar bawul.
A cikin bawuloli na malam buɗe ido, yana tsayayya da yankewa ta hanyar gefen faifan bawul da tasirin ruwa.
2.4.5 Babban haɗarin ɓoye na bawuloli na malam buɗe ido shine ɓullar ruwa.
A cikin hadurran injiniya, yawan zubar ruwa ba shine babbar matsala ba, a'a, karuwar karfin juyi ne.
Abin da ke haifar da gazawar tsarin shine:
Kwatsam a cikin karfin juyi → Lalacewar kayan tsutsa → faɗuwar mai kunnawa → matsewar bawul
Me yasa karfin juyi ya karu ba zato ba tsammani?
- Faɗaɗar wurin zama na bawul mai zafi sosai
- Sha ruwa da faɗaɗa robar (musamman EPDM mara inganci)
- Nakasa ta dindindin ta roba saboda matsin lamba na dogon lokaci
- Tsarin da bai dace ba na gibin da ke tsakanin bawul ɗin tushe da faifan bawul ɗin
- Kujerar bawul ba ta lalace yadda ya kamata ba bayan an maye gurbinta
Saboda haka, "ƙarfin juyawa" wata muhimmiyar alama ce.
2.4.6 Daidaiton injinan jikin bawul ba shi da mahimmanci.
Mutane da yawa sun yi kuskuren yarda cewa rufe bawuloli masu laushi na malam buɗe ido ya dogara ne akan roba, don haka buƙatun daidaiton injinan jikin bawul ɗin ba su da yawa.
Wannan ba daidai ba ne kwata-kwata.
Daidaiton jikin bawul yana shafar:
Zurfin ramin wurin zama na bawul → karkatar da matsi na rufewa, wanda ke haifar da rashin daidaito yayin buɗewa da rufewa.
Rashin isasshen shinge na gefen tsagi → gogewa yayin shigar da wurin zama na bawul
Kuskure a tsakiyar nisan faifan bawul → hulɗar da aka yi ta hanyar da ta wuce gona da iri
2.4.7 Tushen "bawulan malam buɗe ido na roba/PTFE" shine faifan bawul ɗin.
Babban tsarin roba ko PTFE mai cikakken layi ba shine "samun babban yanki wanda yake kama da mai jure tsatsa ba," amma don toshe hanyar shiga ƙananan tashoshi a cikin jikin bawul ɗin. Matsaloli da yawa tare da bawul ɗin malam buɗe ido masu araha ba saboda rashin ingancin roba ba ne, amma a maimakon haka:
Ba a magance "rabin da ke da siffar azzakari" a mahadar wurin zama da jikin bawul yadda ya kamata ba.
Zaizayar ruwa na dogon lokaci → ƙananan fasa → ƙuraje da ƙuraje na roba
Mataki na ƙarshe shine gazawar wurin zama na bawul ɗin da aka ƙayyade.
3. Me yasa ake amfani da bawuloli masu juriya ga malam buɗe ido a duk duniya?
Baya ga ƙarancin farashi, dalilai guda uku masu zurfi sune:
3.1. Juriyar kurakurai mai matuƙar tsanani
Idan aka kwatanta da hatimin ƙarfe, hatimin roba, saboda kyawun sassaucin su, suna da juriya mai ƙarfi ga karkacewar shigarwa da ƙananan kurakurai.
Ko da kurakuran da aka riga aka ƙera bututu, bambance-bambancen flange, da kuma matsin lamba mara daidaiton bolt suna shaye ta hanyar lanƙwasa robar (ba shakka, wannan iyaka ne kuma ba a so, kuma zai haifar da wasu lahani ga bututun da bawul a cikin dogon lokaci).
3.2. Mafi kyawun daidaitawa ga canjin matsin lamba na tsarin
Rufin roba ba su da "ƙarfi" kamar hatimin ƙarfe; suna rama layin hatimin ta atomatik yayin canjin matsin lamba.
3.3. Mafi ƙarancin kuɗin zagayowar rayuwa
Bawuloli masu tauri da aka rufe sun fi ɗorewa, amma farashi da farashin mai kunna wutar lantarki sun fi yawa.
Idan aka kwatanta, jimlar kuɗin saka hannun jari da kulawa na Resilient Butterfly Valves sun fi araha.
4. Kammalawa
DarajarBawuloli Masu Juriya na Malam Budaddiyaba wai kawai "rufewa mai laushi" ba ne
Bawuloli masu laushi da aka rufe da malam buɗe ido na iya zama kamar masu sauƙi, amma samfuran da suka dace suna da kyakkyawan tsari na injiniya, gami da:
Tsarin yanki mai matsewa daidai
Aikin roba mai sarrafawa
Daidaitawar Geometric na jikin bawul da tushe
Tsarin taron wurin zama na bawul
Gudanar da karfin juyi
Gwajin zagayowar rayuwa
Waɗannan su ne muhimman abubuwan da ke tantance inganci, ba "sunan abu" da "tsarin kamanni" ba.
LURA:* BAYANI yana nufin wannan gidan yanar gizon:https://zfavalves.com/blog/key-factors-that-determine-the-quality-of-soft-seal-butterfly-valves/
Lokacin Saƙo: Disamba-09-2025