Taboo 21

Sebaka sa ho kenya ha se na sebaka sa ho sebetsa

Mehato: Esita le haeba ho kenya ho le thata qalong, ho bohlokoa ho ela hloko mosebetsi oa nako e telele oa mokhanni ha a ntse a behavalafobakeng sa ts'ebetso. E le ho etsa ho bula le ho koalavalafoHa ho le bonolo, ho eletsoa ho beha lebili la letsoho la valve hore le bapale le sefuba (hangata limithara tse 1.2 ho tloha mokatong oa kamore ea ho buoa). Ho thibela ts'ebetso e sa thabiseng, lebili la letsoho la valve ea ho lulisa le lokela ho sheba holimo 'me le se ke la sekamela. Li-valve tsa mochini oa lebota le likarolo tse ling li lokela ho lumella sebaka se lekaneng hore opereishene a eme. Ho kotsi haholo ho sebetsa leholimong, haholo-holo ha ho sebelisoa acid-base, mecha ea phatlalatso e kotsi, jj.

Taboo 22

Li-valve tse entsoeng ka thepa e pshatlehang habonolo

Mehato: Ha o kenya le ho haha, ela hloko 'me u se ke ua otla li-valve tsa thepa e brittle. Hlahloba valve, litlhaloso le mehlala pele o e kenya, 'me u batle tšenyo efe kapa efe, haholo-holo kutu ea valve. Kutu ea valve e ka 'na ea sekamela haholo nakong ea ho romelloa, kahoo e retelehe ka makhetlo a 'maloa ho hlahloba hore na e joalo. Hloekisa valve le lithōle life kapa life. Ho qoba ho senya lebili la letsoho kapa kutu ea valve ha u phahamisa valve, thapo e lokela ho tlamelloa ho flange ho fapana le karolo efe kapa efe ea likarolo tsena. Khokahano ea phaephe ea valve e hloka ho hloekisoa. Ho tlosa li-chips tsa oxide ea tšepe, lehlabathe la seretse, slag ea welding, le lintho tse ling tse fapaneng, sebelisa moea o hatelletsoeng. Likaroloana tse kholo tsa mefuta e fapaneng, joalo ka slag ea welding, li ka thibela li-valve tse nyane 'me tsa etsa hore li se sebetse ntle le ho ngoapa habonolo bokaholimo ba ho koala ha valve. E le ho thibela ho bokellana ha valve le tšitiso ea phallo ea seaplane, ho paka ho tiisa (line hemp plus lead oil kapa PTFE raw material tape) ho lokela ho phutheloa ho potoloha khoele ea phaephe pele ho hokela valve ea screw. Etsa bonnete ba hore o tiisa diboutu ka ho lekana le ka ho lekana ha o ntse o kenya di-valve tse flangetsweng. Ho qoba hore valve e se ke ya hlahisa kgatello e ngata haholo kapa ya petsoha, flange ya phaephe le flange ya valve di hloka ho ba ka tsela e tshwanang mme di be le sebaka se lekaneng sa ho bula. Disebediswa tse robehileng le di-valve tse matla a tlase di hloka tlhokomelo e ikgethang. Di-valve tse tjheseditsweng ka phaephe di lokela ho tjheselletswa ka matheba pele, di latelwe ke ho buleha ho feletseng ha dikarolo tse kwalang, mme qetellong, ho tjheseletsa ho shweleng.

Taboo 23

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

Mehato: Li-valve tse ling li boetse lia hlokahala ho kenyelletsa likarolo tsa tšireletso ea kantle bakeng sa ho boloka mocheso le serame. Ka linako tse ling phaephe ea mouoane o futhumetseng e eketsoa lera la ho thibela mocheso. Mofuta oa valve o lokelang ho bolokoa o futhumetse kapa o bata o itšetlehile ka litlhoko tsa tlhahiso. Ka khopolo-taba, ho boloka mocheso kapa esita le ho latela mocheso hoa hlokahala haeba sebaka se ka hare ho valve se bata haholo, e leng se tla fokotsa katleho ea tlhahiso kapa sa etsa hore valve e hoame. Ka mokhoa o ts'oanang, ha valve e pepesitsoe, e leng se sebe bakeng sa tlhahiso kapa se fellang ka serame le liketsahalo tse ling tse sa rateheng, valve e hloka ho bolokoa e bata. Lisebelisoa tsa ho thibela mocheso tse batang li kenyelletsa cork, perlite, foam, polasetiki, diatomaceous earth, asbestos, slag wool, khalase wool, perlite, diatomaceous earth, jj.

Taboo 24

Sefi sa mouoane ha sea kenngoa ka tsela e sa laoleheng

Litekanyo: Li-valve tse ling li na le lisebelisoa le li-bypasses ho phaella ho likarolo tsa mantlha tsa tšireletso. Bakeng sa tlhokomelo e bonolo ea leraba, ho kentsoe bypause. Ho na le li-valve tse ling tse behiloeng ka bypause. Boemo, bohlokoa, le litlhoko tsa tlhahiso ea valve li etsa qeto ea hore na bypause e lokela ho kenngoa.

Taboo 25

Ho paka ha ho nkeloe sebaka khafetsa

Mehato: Liphutheloana tse ling tsa li-valve tse teng setokong li hloka ho nkeloa sebaka kaha ha li sebetse hantle kapa ha li lumellane le setshelo se sebelisoang. Lebokose la ho tlatsa le lula le tletse ka ho paka kamehla 'me valve e pepesetsoa likete tsa mecha ea phatlalatso e fapaneng, leha ho le joalo ha valve e sebetsa, ho paka ho tlameha ho etsoa hore ho be le mecha ea phatlalatso. Tobetsa sephutheloana sebakeng sa sona ka ho potoloha ka li-circle. Seam ea selikalikoe se seng le se seng e lokela ho ba likhato tse 45, 'me li-seam tsa li-circle li lokela ho arohana ka likhato tse 180. Karolo e ka tlase ea gland joale e lokela ho hatelloa ho ea botebong bo loketseng ba kamore ea ho paka, e leng hangata e leng 10-20% ea botebo bohle ba kamore ea ho paka. Bophahamo ba sephutheloana bo lokela ho ela hloko sena. Sekhutlo sa seam bakeng sa li-valve tse nang le litekanyetso tse thata ke likhato tse 30. Li-seam tsa selikalikoe li fapana ka likhato tse 120 ho tloha ho e 'ngoe ho e 'ngoe. Masale a mararo a rabara a O (rabara ea tlhaho e hanelang alkali e fokolang ka tlase ho likhato tse 60 tsa Celsius, rabara ea nitrile e hanelang lihlahisoa tsa oli ka tlase ho likhato tse 80 tsa Celsius, le rabara ea fluorine e hanelang masale a fapaneng a senyang ka tlase ho likhato tse 150 tsa Celsius) le tsona li ka sebelisoa, ho latela maemo, ho phaella ho li-filler tse boletsoeng ka holimo. Masale a sekotlolo sa nylon (a hanelang ammonia le alkali ka tlase ho likhato tse 120 tsa Celsius), masale a polytetrafluoroethylene a laminated (a hanelang masale a matla a senyang ka tlase ho likhato tse 200 tsa Celsius), le li-filler tse ling tse bōpehileng joaloka tsona. Phutha lera la teipi e tala ea polytetrafluoroethylene ka ntle ho sephutheloana se tloaelehileng sa asbestos ho ntlafatsa ho koaloa le ho fokotsa ho senyeha ha kutu ea valve ho tsoa ketsong ea electrochemical. Ho boloka sebaka se lekana le ho se boloka se shoele haholo, potoloha kutu ea valve ha u ntse u hatella sephutheloana. U se ke ua sekamela ha u ntse u tiisa gland ka boiteko bo sa khaotseng.