Taboo 21

Sebaka sa ho kenya ha se na sebaka sa ho sebetsa

Mehato: Le haeba ho kenya ho le thata qalong, ho bohlokoa ho ela hloko mosebetsi oa nako e telele oa opareitara ha o ntse o behabelofobakeng sa ts'ebetso. E le ho etsa ho bula le ho koalabelofoho le bonolo, ho eletsoa ho beha lebili la letsoho la valve e le hore le bapane le sefuba (hangata ke limithara tse 1,2 ho tloha mokatong oa kamore ea ho sebetsa). Ho thibela ts'ebetso e sa hlakang, lebili la letsoho la valve ea ho lulisa le lokela ho shebana le holimo mme le se ke la thella. Li-valve tsa mochini oa lebota le likarolo tse ling li lokela ho lumella sebaka se lekaneng hore opareitara a eme. Ho kotsi haholo ho sebetsa leholimong, haholo-holo ha u sebelisa acid-base, mecha ea litaba e kotsi, joalo-joalo.

Taboo 22

Li-valve tse entsoeng ka lisebelisoa tse senyang

Mehato: Ha u kenya le ho haha, e-ba hlokolosi 'me u qobe ho otla li-valve tsa brittle-material. Sheba li-valve, li-specs, le mefuta pele u kenya, 'me u shebe tšenyo leha e le efe, haholo-holo kutu ea valve. Sekhahla sa valve se ka 'na sa kheloha nakong ea sekepe, kahoo se fetole ka makhetlo a' maloa ho hlahloba hore na se teng. Hloekisa valve ea litšila leha e le life hape. Ho qoba ho senya lebili la letsoho kapa kutu ea valve ha u phahamisa valve, thapo e lokela ho tlamelloa ho flange ho e-na le e 'ngoe ea likarolo tsena. Khokahano ea lipeipi tsa valve e hloka ho hloekisoa. Ho tlosa liphaephe tsa iron oxide, lehlabathe la seretse, li-welding slag le tse ling, sebelisa moea o hatelitsoeng. Likaroloana tse kholo tsa li-sundries, tse joalo tsa welding slag, li ka sitisa li-valve tse nyane 'me tsa etsa hore li se ke tsa sebetsa ntle le ho hopa habonolo holim'a ho koala ha valve. E le ho thibela ho bokellana ka har'a valve le ho kena-kenana le phallo ea seaplane, ho paka ho tiisa (line hemp hammoho le oli ea lead kapa theipi ea thepa e tala ea PTFE) e lokela ho phutheloa ho pota khoele ea phala pele e hokela sekoti. Etsa bonnete ba hore u tiisa liboutu ka mokhoa o ts'oanang le ka mokhoa o ts'oanang ha u ntse u kenya li-valve tsa flanged. Ho qoba valve hore e se ke ea hlahisa khatello e ngata haholo kapa e ka 'nang ea phunyeha, phallo ea pipe le flange ea valve e lokela ho ba e ts'oanang 'me e be le tekanyo e loketseng ea tumello. Lisebelisoa tsa Brittle le li-valve tse matla tse tlaase li hloka tlhokomelo e khethehileng. Li-valve tse entsoeng ka liphaephe li lokela ho ba le letheba-welded pele, li lateloe ke ho bula ka ho feletseng ha likarolo tse koalang, 'me qetellong, ho tjheseletsa ho shoeleng.

Taboo 23

Belofo ha e na mehato ea ho boloka mocheso le mehato ea ho boloka serame

Mehato: Li-valve tse ling li boetse li hlokoa ho kenyelletsa likarolo tsa tšireletso tsa kantle bakeng sa ho boloka mocheso le serame. Ka linako tse ling peipi ea mouoane e futhumetseng e eketsoa karolong ea ho pata. Mofuta oa valve o lokelang ho bolokoa o futhumetse kapa o bata o itšetlehile ka litlhoko tsa tlhahiso. Ka khopolo, ho boloka mocheso kapa esita le ho latela mocheso hoa hlokahala haeba sehare se ka hare ho valve se pholile haholo, se tla fokotsa katleho ea tlhahiso kapa ho etsa hore valve e hatsele. Ka mokhoa o ts'oanang, ha valve e pepesehile, e leng mpe bakeng sa tlhahiso kapa e bakang serame le lintho tse ling tse sa rateheng, valve e lokela ho bolokoa e bata. Lisebelisoa tse thibelang serame li kenyelletsa kork, perlite, foam, polasetiki, lefatše la diatomaceous, asbestos, boea ba slag, boea ba khalase, perlite, lefatše la diatomaceous, joalo-joalo.

Taboo 24

Steam trap ha e kentsoe bypass

Mehato: Li-valve tse ling li na le lisebelisoa le li-bypass ho phaella ho likarolo tsa motheo tsa tšireletso. Bakeng sa tlhokomelo e bonolo ea sefi, ho kentsoe tsela e pota-potileng. Ho na le li-valve tse ling tse behiloeng ka bypass. Boemo, bohlokoa, le litlhoko tsa tlhahiso ea valve li etsa qeto ea hore na ho lokela ho kengoa tsela e pota-potileng.

Taboo 25

Ho paka ha ho nkeloe sebaka khafetsa

Mehato: Liphutheloana tse ling tsa li-valve tse teng li hloka ho nkeloa sebaka kaha ha li sebetse kapa ha li lumellane le mokhoa o sebelisoang. Lebokose la ho roala le lula le tletse ka ho phuthela kamehla 'me valve e pepesehile ho likete tsa mecha ea litaba e sa tšoaneng, leha ho le joalo ha valve e sebetsa, ho paka ho tlameha ho etsoa ka mokhoa o ikhethileng bakeng sa mecha ea litaba. Tobetsa sephutheloana sebakeng ka ho pota-pota. Sebaka se seng le se seng sa selikalikoe se lokela ho ba likhato tse 45, 'me seams sa selikalikoe se lokela ho arohana ka likhato tse 180. Karolo e ka tlase ea tšoelesa joale e lokela ho hatelloa botebong bo loketseng ba phaposi ea ho paka, eo hangata e leng 10-20% ea botebo ba phaposi ea ho paka. Bophahamo ba ho paka bo lokela ho ela sena hloko. The seam angle for valves with strient criteria is 30 degrees. Li-circular seams li fapana ka likhato tse 120 ho tloha ho tse ling. Li-O-rings tse tharo (rabara ea tlhaho e hanyetsanang le alkali e fokolang e ka tlase ho likhato tse 60 tsa Celsius, rabara ea nitrile e hanyetsanang le lihlahisoa tsa oli tse ka tlase ho likhato tse 80 tsa Celsius, le rabara ea fluorine e hanyetsanang le mecha ea litaba e senyang e ka tlase ho likhato tse 150 tsa Celsius) le eona e ka sebelisoa, ho latela maemo. , ho phaella ho li-fillers tse boletsoeng ka holimo. Masale a nylon (a hanyetsanang le ammonia le alkali ka tlase ho likhato tse 120 tsa Celsius), masale a laminated polytetrafluoroethylene (tse hananang le mecha ea litaba e senyang e ka tlase ho likhato tse 200 tsa Celsius), le lithapo tse ling tse nang le sebopeho. le ho fokotsa ho senyeha ha sekhahla sa valve ho tloha ketsong ea electrochemical. Ho boloka sebaka se ts'oana le ho se boloka hore se se ke sa shoa haholo, phunya kutu ea valve ha u ntse u hatella ho paka. U se ke ua sekamela ha u ntse u tiisa tšoelesa ka boiteko bo tsitsitseng.