Gabatarwa:

A cikin yin amfani da yau da kullum na manyan diamita na masu amfani da bawul ɗin malam buɗe ido, sau da yawa muna nuna matsala, wato, babban diamita na bawul ɗin malam buɗe ido da ake amfani da shi don matsa lamba daban-daban shine ingantattun manyan kafofin watsa labarai, irin su tururi, ruwa mai ƙarfi da sauran aikin matsa lamba, sau da yawa sosai. wuyar rufewa, komai wuyar rufewa, ko da yaushe ana gano cewa za a sami wani abu mai yabo, yana da wuya a rufe sosai, wanda ke haifar da matsala da tsarin tsarin bawul ɗin da kuma iyakokin mutum na matakin fitarwa. karfin juyi bai wadatar ba. 

Binciken dalilai na wahala a canza manyan bawuloli na diamita

Matsakaicin iyakar ƙarfin fitarwa na babba shine 60-90kg, ya danganta da girman jiki daban-daban.

An ƙera madaidaicin magudanar ruwa na bawul ɗin malam buɗe ido don zama ƙasa a ciki kuma sama da ƙasa, lokacin da mutum ya rufe bawul ɗin, jikin ɗan adam a kwance yana tura ƙafar hannu don juyawa, ta yadda bawul ɗin bawul ɗin yana motsawa ƙasa don cimma rufewa, wanda ake buƙata shawo kan haduwar karfi guda uku, wato:

1) Axial saman tura Fa;

2) tattarawa da kuma kara karfin gogayya Fb;

3) Kara da bawul core lamba gogayya Fc

Jimlar karfin juyi shine ∑M=(Fa+Fb+Fc)R

Kamar yadda za'a iya gani, mafi girma mafi girma, mafi girma mafi girma da karfi na axial, lokacin da yake kusa da yanayin da aka rufe, ƙarfin motsa jiki yana kusa da ainihin matsa lamba na cibiyar sadarwa na bututu (saboda rufewar P1-P2 ≈ P1). , P2 = 0)

Idan ana amfani da bawul ɗin caliber na malam buɗe ido a kan bututun tururi mai lamba 10bar, kawai farkon rufewar axial thrust Fa = 10 × πr2 = 3140kg, kuma ƙarfin da'irar da ake buƙata don rufewa yana kusa da iyakar ƙarfin dawafi na kwance wanda za'a iya fitarwa. daga jikin mutum na yau da kullun, don haka yana da matukar wahala mutum ya rufe bawul din gaba daya a karkashin irin wannan yanayin aiki.

Tabbas wasu masana'antu suna ba da shawarar shigar da irin wannan nau'in bawul ta baya, wanda ke magance matsalar wahalar rufewa, amma sai matsalar wahalar buɗewa bayan rufewa ta taso. 

 

Babban diamita na lantarki flange malam buɗe ido bawul manufacturer Tianjin Zhongfa Valve-ZFA fasaha sashen karewa, manyan diamita lantarki flange malam buɗe ido bawul yayyo dalilai da daban-daban yanayi bisa ga daban-daban tsarin, akwai daban-daban dalilai, da wadannan don nazarin lokuta biyu:

 

Na farko, lokacin ginin da ya haifar da manyan diamita na flange malam buɗe ido bawul na ciki dalilai: 

① sufuri da ɗagawa ba daidai ba lalacewa ta hanyar lalacewa gabaɗaya ga babban diamita na lantarki flange malam buɗe ido, don haka haifar da babban diamita lantarki flange malam buɗe ido bawul yayyo;

② factory, bayan da ruwa matsa lamba bai taka babban diamita lantarki flange malam buɗe ido bawul bushewa da anticorrosion magani, sakamakon samuwar ciki yayyo na sealing surface lalata;

③ Kariyar wurin ginin ba a cikin wurin, babban diamita na lantarki flange malam buɗe ido ba a shigar da shi a duka ƙarshen makafi, ruwan sama, yashi da sauran ƙazanta a cikin wurin zama na bawul, wanda ke haifar da zubewa;

④ A lokacin shigarwa, ba a shigar da man shafawa a cikin wurin zama na bawul, wanda ya haifar da ƙazanta da ke shiga bayan kujerar valve, ko ƙonewa ta hanyar zubar da ciki a lokacin walda;

⑤ Ba a shigar da bawul ɗin a cikin cikakken buɗe wuri ba, yana haifar da lalacewa ga ƙwallon.A lokacin walda, idan bawul ɗin ba a buɗe yake ba, spatter ɗin walda zai haifar da lalacewa ga ƙwallon ƙwallon, kuma lokacin da ƙwallon da ke kunna walda da kashewa zai ƙara haifar da lalacewa ga wurin zama na bawul, wanda hakan zai haifar da ciki. yabo;

⑥ Welding slag da sauran yi remnants lalacewa ta hanyar sealing surface scratches;

masana'anta ko lokacin shigarwa ba daidai ba matsayi lalacewa ta hanyar yayyo, idan bawul tushe drive hannun riga ko wasu na'urorin haɗi da ta taro kusurwar misalignment, babban diamita lantarki flange malam buɗe ido bawul zai zubo.

 

Na biyu, lokacin aiki da manyan diamita na lantarki flange malam buɗe ido yayyo dalilai:

① Dalili mafi na kowa shine cewa mai sarrafa ayyukan yana yin la'akari da farashin kulawa da tsadar manyan diamita na flange malam buɗe ido ba ya aiwatar da kulawa, ko rashin ilimin kimiyya manyan diamita na flange malam buɗe ido da hanyoyin kulawa da manyan diamita na lantarki. flange malam buɗe ido ba ya aiwatar da rigakafin rigakafi, yana haifar da gazawar kayan aiki a gaba;

② aiki mara kyau ko a'a daidai da hanyoyin kiyayewa don kulawa da lalacewa ta ciki;

③ A cikin aiki na yau da kullun, ragowar gine-ginen sun toshe saman rufewa, yana haifar da yabo na ciki;

④ Tsabtace bututu mara kyau yana haifar da lalacewa ga shingen rufewa wanda ya haifar da zubar da ciki;

⑤ Rashin kulawa na dogon lokaci ko rashin aiki na bawul mai girman diamita na flange malam buɗe ido, wanda ke haifar da wurin zama na bawul da riƙe ball, yana haifar da lalacewa yayin canza babban diamita na flange malam buɗe ido don samar da ɗigon ciki;

⑥ babban diamita na lantarki flange malam buɗe ido bawul canza ba a wurin don haifar da ciki yayyo, duk wani babban diamita lantarki flange malam buɗe ido bawul ba tare da la'akari da budewa da rufe matsayi, kullum karkatar 2 ° ~ 3 ° na iya haifar da yayyo;

⑦ Yawancin manyan diamita manyan diamita na lantarki flange malam buɗe ido galibi suna da toshe tasha, idan aka daɗe ana amfani da su, saboda tsatsa da lalata da sauran dalilai tsakanin ƙarar da tasha tasha zata tara tsatsa, ƙura, fenti da sauran su. tarkace, wadannan tarkace za su haifar da babban diamita lantarki flange malam buɗe ido ba za a iya juya zuwa cikin wuri da kuma haifar da yayyo - idan babban-diamita lantarki flange malam buɗe ido bawul da aka binne, tsawo da bawul kara zai haifar da fada more tsatsa da ƙazanta hana bawul. jujjuyawar ball a wurin, yana haifar da babban diamita na wutar lantarki flange malam buɗe ido yayyo.

⑧ janar actuator kuma yana da iyakancewa, idan sanadin tsatsa na dogon lokaci, taurin maiko ko ƙarancin kusoshi zai sa iyaka ba daidai ba, yana haifar da ɗigon ciki;

⑨ lantarki actuator bawul matsayi saitin gaba, ba da alaka da wuri don haifar da ciki yayyo;

⑩ rashin kulawa da kulawa na lokaci-lokaci, yana haifar da busasshen man shafawa mai bushe, taurare, busassun busassun man shafawa yana tarawa a cikin wurin zama na roba, yana hana motsin kujerar bawul, yana haifar da gazawar hatimi.

ZFA Valve Factory suna da ƙwararrun ƙungiyoyin QC don tabbatar da cewa kowane bawul ɗin masana'anta a ciki da bayyanar yana da sauti.A lokaci guda, muna da ƙwararrun fasaha da ƙungiyoyin tallace-tallace don taimaka wa abokan ciniki su magance matsalolin daban-daban da aka fuskanta yayin shigarwa da amfani.