Ukuqedwa kwenkinga evamile ye-Valve, ukugcinwa kwengcindezi ephansi ye-ADAMS valve yokuvala indlela yokumisa isikhathi

Ukuqedwa kwenkinga evamile ye-valve, ukugcinwa kokucindezela okuphansi I-valve ye-ADAMS yokuvala ngokushesha indlela yokumisa isikhathi 1. Kungani i-valve yokusika kufanele ivalwe ngokuqinile ngangokunokwenzeka? Nciphisa izidingo zokuvuza kwe-valve okuphansi kakhulu, ukuvuza kwe-valve yophawu oluthambile kuphansi kakhulu, ukunqanyulwa komphumela kuhle, kodwa akukwazi ukumelana nokuguga, ukwethembeka okubi. Ukusuka ekuvuzeni nokuncane, okuvalekayo kanye nezinga elikabili elithembekile, ukunqanyulwa kophawu oluthambile kungcono kunokusikwa uphawu oluqinile. Njengomsebenzi ogcwele we-valve elawula ukukhanya kwe-ultra-light, evalwe futhi yapakishwa ngokuvikelwa kwe-alloy ukumelana nokugqoka, ukwethembeka okuphezulu, izinga lokuvuza lika-10-7, likwazile ukuhlangabezana nezidingo ze-valve yokusika. 2. Kungani ivalvu evala uphawu kabili ingakwazi ukusetshenziswa njengevalvu eyisikiwe? Inzuzo ye-spool ye-valve enezihlalo ezimbili yisakhiwo sebhalansi yamandla, okuvumela umehluko omkhulu wengcindezi, kanye nobubi bayo obuvelele ukuthi izindawo ezimbili zokuvala azikwazi ukuxhumana okuhle ngesikhathi esisodwa, okuholela ekuvuzeni okukhulu. Uma kusetshenziswa ngokungemthetho futhi ngenkani ukunqamula umcimbi, ngokusobala umphumela awumuhle, ngisho noma wenze ukuthuthukiswa okuningi (njenge-valve yemikhono eqinile ephindwe kabili), ayifiseleki. 3. Kungani kulula ukunyakazisa uma ivalve enezihlalo ezimbili ivulekile? Ngomgogodla owodwa, lapho okuphakathi kuwuhlobo oluvulekile lokugeleza, ukuzinza kwe-valve kuhle; Lapho ukugeleza okuphakathi kuvaliwe, ukuzinza kwe-valve kubi. I-valve yesihlalo esiphindwe kabili inama-spool amabili, i-spool ephansi ingaphakathi kokugeleza ivaliwe, i-spool ephezulu isekugelezeni okuvulekile, ngakho-ke, emsebenzini omncane wokuvula, ukugeleza okuvaliwe kohlobo lwe-spool kulula ukubangela ukudlidliza kwe-valve, lokhu isizathu esenza ukuthi i-valve yezihlalo ezimbili ingakwazi ukusetshenziselwa umsebenzi omncane wokuvula. I-4, iyiphi i-stroke eqondile elawula ukusebenza kwe-valve engalungile, ukusebenza kwe-Angle stroke blocking valve kuhle? I-spool ye-valve ye-stroke eqondile inyakazisa mpo, futhi okumaphakathi kuwukugeleza okuvundlile ukungena nokuphuma egunjini lama-valve isiteshi sokugeleza kufanele sibuyele emuva, ukuze indlela yokugeleza kwevalvu ibe yinkimbinkimbi impela (umumo onjengohlobo oluhlanekezelwe luka-S). Ngale ndlela, kunezindawo eziningi ezifile, ezihlinzeka ngendawo yemvula ye-medium, futhi ngokuhamba kwesikhathi, kubangele ukuvinjelwa. Isiqondiso se-Angle stroke valve throttling yindlela evundlile, okuphakathi kugeleza futhi kuphume ngokuvundlile, futhi kulula ukususa okuphakathi okungahlanzekile. Ngesikhathi esifanayo, indlela yokugeleza ilula, futhi isikhala semvula esiphakathi sincane kakhulu, ngakho-ke i-valve ye-Angle stroke inokusebenza okuhle kokuvimbela. 5, kungani isiqu se-valve yokulawula i-stroke sincane? I-valve elawula i-stroke eqondile ihlanganisa isimiso esilula somshini: ukungqubuzana okukhulu kokuslayida, ukungqubuzana okuncane okugoqayo. Straight stroke valve stem up and down ukunyakaza, ukupakisha sicindezelwe kancane kancane, izobeka isiqu valve zisongwe kakhulu, ukukhiqiza umehluko omkhulu emuva. Ngenxa yalesi sizathu, isiqu se-valve senzelwe ukuba sibe sincane kakhulu, futhi ukupakisha kuvame ukusetshenziswa nge-coefficient encane yokupakisha i-PTFE, ukuze kuncishiswe ukuhlukana, kodwa inkinga ukuthi i-valve stem incane, kulula ukugoba. , futhi impilo yokupakisha ifushane. Ukuze uxazulule le nkinga, indlela engcono kakhulu ukusebenzisa i-valve stem, okungukuthi, i-Angle stroke ye-valve stem, i-valve yayo iphindwe izikhathi ezingu-2 ~ 3 kune-stroke eqondile ye-valve stem, nokukhetha isikhathi eside. -ukuphila kwe-graphite ukupakisha, ukuqina kwe-stem kuhle, impilo yokupakisha yinde, i-torque ye-friction incane, umehluko omncane wokubuya. 6. Kungani umehluko we-cut off pressure valve we-Angle stroke valve mkhulu? I-valve yohlobo lwe-angle yokusika umehluko wengcindezi mkhulu, ngoba amandla aphumela ku-spool noma epuleti le-valve ku-torque ye-rotation shaft mancane kakhulu, ngakho-ke, angakwazi ukumelana nomehluko omkhulu wengcindezi. 7. Kungani i-valve yomkhono ithathe indawo ye-valve yesihlalo esisodwa nesekabili kodwa ingawufezi umgomo wayo? I-sleeve valve, eyaphuma ngeminyaka yawo-1960, yayisetshenziswa kakhulu ekhaya naphesheya ngeminyaka yawo-1970. Embonini ye-petrochemical eyethulwa ngawo-1980, ivalvu yemikhono yaba nenani elikhulu. Ngaleso sikhathi, abantu abaningi babekholelwa ukuthi i-valve ye-sleeve ingangena esikhundleni se-valve yesihlalo esisodwa nesikabili futhi ibe isizukulwane sesibili semikhiqizo. Namuhla, akunjalo, i-valve yesihlalo esisodwa, i-valve yokuhlala kabili, i-sleeve valve isetshenziswa ngokulinganayo. Lokhu kungenxa yokuthi i-sleeve valve ithuthukisa kuphela ifomu le-throttling, ukuzinza kanye nokugcinwa kangcono kune-valve yesihlalo esisodwa, kodwa isisindo sayo, izinkomba zokuvimba kanye nokuvuza zihambisana ne-valve yesihlalo esisodwa kanye ne-double, ingakwazi kanjani ukufaka i-valve yesihlalo esisodwa nesikabili. ? Ngakho, kufanele kwabiwe. 8. Kungani impilo yesevisi ye-desalting water medium ifakwe i-rubber butterfly valve kanye ne-fluorine lined diaphragm valve ifushane? I-Desalting water medium iqukethe ukugcwala okuphansi kwe-asidi noma i-alkali, inokugqwala okukhulu kunjoloba. Ukugqwala kwerabha kubonakala ngokunwebeka, ukuguga namandla aphansi. Umphumela wokusetshenziswa kwe-valve uvemvane kanye ne-diaphragm valve efakwe irabha mubi. Umongo wukuthi irabha ayimelani nokugqwala. Ngemuva kokuthi i-valve ye-diaphragm yenjoloba ithuthukisiwe ukuze ikwazi ukumelana nokugqwala kwevalve ye-fluorine efakwe umugqa we-diaphragm, kodwa i-diaphragm ye-fluorine ene-diaphragm valve ayikwazi ukusukuma naphansi igoqe futhi iphukile, okuholela ekulimaleni komshini, ukuphila kwe-valve kufushane. Manje indlela engcono kakhulu ukusebenzisa i-valve yebhola yokwelapha amanzi, ingasetshenziswa iminyaka engu-5 kuya kwengu-8. 9, kungani ukusetshenziswa kwe-valve ye-pneumatic piston actuator kuzoba ngaphezulu nangaphezulu? Ku-valve ye-pneumatic, i-piston actuator ingasebenzisa ngokugcwele ukucindezela komthombo womoya, usayizi we-actuator mncane kunefilimu, i-thrust inkulu, i-O-ring ku-piston inokwethenjelwa kakhulu kunefilimu, ngakho-ke izokwenza. zisetshenziswe kakhulu. 10. Kungani ukukhetha kubaluleke ngaphezu kokubala? Ukubalwa nokukhetha kuqhathaniswa, ukukhetha kubaluleke kakhulu, kuyinkimbinkimbi kakhulu. Ngenxa yokuthi ukubala kuwukubala kwefomula elula kuphela, yona ngokwayo ayincikile ezingeni lefomula, kodwa incike ekunembeni kwemingcele yenqubo enikeziwe. Ukukhethwa kuhilela okuqukethwe okwengeziwe, ukunganaki okuncane, kuzoholela ekukhethweni okungalungile, kungabangeli ukuchithwa kwabasebenzi, izinsiza ezibonakalayo, izinsiza zezimali, futhi ukusetshenziswa komphumela akulungile, ukuletha izinkinga eziningi zokusetshenziswa, njengokwethenjelwa. , impilo, ikhwalithi yokusebenza, njll. Ekuhlolweni kokuvala okusheshayo kwe-valve yokucindezela okuphansi esizeni, isikhathi sokuvala okusheshayo kwamanye ama-valve okumisa asifaneleki. I-inlet ye-valve yokukhulula ngokushesha ilungiswa esizeni ukwenza isikhathi sokuvala ngokushesha sawo wonke ama-valve sihlangabezane nezidingo. Ekuhlolweni kokuvala okusheshayo KWE-valve yokucindezela okuphansi esizeni, isikhathi sokuvala ngokushesha sama-valve ambalwa wokumisa asifaneleki. I-inlet ye-valve yokukhulula ngokushesha ilungiswa esizeni ukwenza ukuvala okusheshayo kwawo wonke ama-valve kuhlangabezane nezidingo. I-valve ye-Adams enengcindezi ephansi ishintshwa ngokushintsha inani lama-gaskets angaphambili nangemuva. Umthelela onyakazayo wesigaba esincane ngu-±0.15s, futhi umphumela onyakazayo wesigaba esiwugqinsi ngu-±0.3s, njengoba kuboniswe esithombeni esingezansi. Ngokusho kwesakhiwo somshini wedivayisi, isimiso sidwetshwa kanje: Kuhlanganiswe nomdwebo we-schematic nezithombe, kungabonakala ukuthi indlela yokulungisa iwukushintsha ama-gaskets ezinhlangothini zombili zomphathi ukuze kulungiswe ubude bomshini. slide sonke sijule kumjikelezo kawoyela. Kunezinhlobo ezimbili zesilayidi, esisodwa esincanyana nesiwugqinsi. Imidwebo emibili elandelayo ibonisa ukuma kwesilayidi ngesikhathi sokusebenza okuvamile nokuvala shaqa ngokushesha. Njengoba kungabonakala emfanekisweni, lapho usebenza ngokujwayelekile, isilayidi siqhutshelwa phambili, futhi umgwaqo wokuthulula uvaliwe; Uma ukuvalwa ngokushesha kokugxuma kwenzeka, isilayidi singaphandle futhi isifunda samafutha okulayisha siyavulwa. Shintsha inombolo yama-gaskets ngemuva kwebhlokhi yama-slide, ingashintsha isihlalo sangemuva sebhulokhi yama-slide, iphumele kubude bomgwaqo kawoyela othululayo, ngaphandle ukuze wengeze i-gasket, ingenza isikhathi sokuvala ngokushesha selulwe ngo-0.15s, ngaphandle ukwengeza i-gasket ewugqinsi, kungenza isikhathi sokuvala ngokushesha sinwetshwe ngama-0.3s. Uma i-washer ifakwe ngaphakathi, ayishintshi isikhathi. Isetshenziselwa ukulondoloza ikhophi.