Simbi yekugadzira Tubesheet yeHeat Exchanger
Mukuverenga kwemagadzirirwo ezvishandiso zvekupisa zvemachubhu akagadziriswa, kana paine mamiriro ezvinhu apo kushushikana kwegoko, kushushikana kwechubhu yekutsinhana kupisa, kana simba rekudhonza pakati pechubhu yekutsinhana kupisa nechubhu harigone kuzadzisa zvinodiwa zvesimba (kana kugadzikana), zvinova zvakakosha kuisa joint yekuwedzera. Mune zvimwe zviitiko, mushure mekuona ukobvu hwechubhu, simba rechubhu rinogona kusakwana pasina joint yekuwedzera. Zvisinei, nekuwedzera joint yekuwedzera, ukobvu hwechubhu hunogona kuzadzisa zvinodiwa. Muzviitiko zvakadaro, sarudzo yekuisa joint yekuwedzera inofanira kubva pakuongorora kwakazara kwekushandiswa kwezvinhu, kuoma kwekugadzira, kuchengetedzeka, uye mhedzisiro yemari.
Rudzi rwekuwedzera runoshandiswa zvakanyanya muzvishandiso zvekupisa zvemachubhu zvakagadzika ihuni yekuwedzera yakaita seU, iyo iri diki, iri nyore muchimiro, ine hunhu hwakanaka hwekuripa, uye isingadhuri. Nekukura kuri kuita michina yemakemikari nemafekitori emagetsi, dhayamita yemachubhu yave yakakura, ine dhayamita ye4m kusvika 5m yakajairika. Machubhu makuru anoratidzwa nehuwandu hwakawanda hwemaburi madiki akazara, akadzika ane zvinodiwa zveunyanzvi uye kuchena.
Masheti echubhu anoshandiswa zvakanyanya mumaindasitiri akadai semasheti ekupisa esheki nechubhu, mabhoyila, midziyo yekumanikidza, maturbine, uye masisitimu makuru emhepo inotonhodza. Anonyanya kushandiswa kutsigira nekugadzirisa machubhu ari mumidziyo yemakemikari, akadai semasheti ekupisa esheki nechubhu, midziyo yekumanikidza, mabhoyila, macondenser, masisitimu emhepo inotonhodza, maevaporator, uye midziyo yekubvisa munyu mumvura yegungwa. Zvinhu zvesimbi zvemasheti echubhu hazvingogumiri pakuoma kwakanyanya asiwo zvinopa hunhu hwakanaka hwekufambisa kupisa.
Panguva yekugadzira ma "shell" nema "tube heat exchangers", "welding" ye "tube sheet" nema "tubes" inowanzoitwa uchishandisa "hand shielded metal arc welding", zvichikonzera kuti pave nezvikanganiso muchimiro che "weld", zvakaita se "depressions", "pores", uye "inclusions", pamwe nekupararira kwe "weld stress" kusingaenderane. Kana ichishandiswa, "tube sheet" inowanzosangana nemvura inotonhorera yeindasitiri, izvo zvinogona kukonzera ngura ye "tube sheet" nema "welds" nekuda kwetsvina, munyu, magasi, uye tupukanana turi mumvura inotonhorera yeindasitiri - izvi zvinozivikanwa se "electrochemical corrosion".
Ongororo inoratidza kuti mvura yemumaindasitiri, ingave yakachena kana yegungwa, ine maion akasiyana-siyana neokisijeni yakanyungudutswa, nekusiyana kwehuwandu hwemaion echlorine neokisijeni zvichiita basa rakakosha muchimiro chengura yesimbi. Pamusoro pezvo, kuoma kwechimiro chesimbi kunogonawo kukanganisa chimiro chengura. Saka, mhando huru dzengura dzemachubhu epurasitiki nechubhu dzinobatanidza ngura nengura inopinza.
Ndinovimba kuti shanduro iyi inonyatsoburitsa ruzivo rwehunyanzvi rwawakapa.