Ivaluvu ebuzwa rhoqo imibuzo 9 imibuzo 9 iimpendulo
1. Kutheni ivalve yesitulo esiphindwe kabini ilula ukuyijikajika xa isebenza ngentunjana encinci?i
Kwisiseko esisodwa, xa i-medium luhlobo lwe-flow-open, ukuzinza kwevalve kulungile;xa i-medium luhlobo lwe-flow-close, ukuzinza kwevalve kubi.Ivalve enesihlalo esiphindwe kabini inama-spools amabini, i-spool esezantsi ivaliwe kwaye i-spool ephezulu ivuliwe.Ngale ndlela, xa usebenza kwindawo encinci yokuvula, i-spool evaliweyo iya kubangela ukuba i-valve iguqe ngokulula.Le yivalve enezihlalo ezimbini.Isizathu sokuba ingasetyenziselwa umsebenzi omncinci wokuvula.
2. Kutheni ivalve yokutywina kabini ingenakusetyenziswa njengesivalo sokuvala?i
I-advanteji ye-core valve core yi-force balance structure, evumela ukuba umehluko omkhulu woxinzelelo, kodwa ukungabikho kwayo okubalaseleyo kukuba iindawo ezimbini zokutywina azikwazi ukunxibelelana kakuhle ngexesha elifanayo, okubangela ukuvuza okukhulu.Ukuba isetyenziswe ngokunyanzeliswayo kwaye isetyenziswe ngenkani kwiimeko zokunqunyulwa, umphumo ngokucacileyo awulungile, nokuba uphuculo oluninzi (olufana neevalvu zemikhono ezitywinwe kabini) lwenzelwe oko, akucebisi.
3. Yeyiphi ivalve yokulawula istroke engasebenzi kakuhle, kunye nevalve yekota ene-anti-blocking performance entle?i
I-spool yevalve ye-straw-stroke i-throttled ngokuthe nkqo, ngelixa i-medium igeleza ngaphakathi nangaphandle ngokuthe tye.Indlela yokuhamba kumngxuma wevalvu kufuneka ijike kwaye ijike ngasemva, nto leyo eyenza ukuba indlela yokuhamba kwevalve ibenzima kakhulu (imilo ifana nesheyiphu ethi "S" ejijelweyo).Ngale ndlela, zininzi iindawo ezifileyo, ezibonelela ngesithuba sokuna kwemvula yendawo ephakathi, kwaye ukuba izinto ziqhubeka ngolu hlobo, ziya kubangela ukuvaleka.I-throttling direction ye-valve yekota-turn i-horizontal direction.Uphakathi uhamba ngokuthe tye kwaye uphuma ngokuthe tye.Kulula ukususa indawo emdaka.Ngelo xesha, indlela yokuhamba ilula kwaye kukho indawo encinci yokuhlalisa i-medium, ngoko ke i-valve yekota yekota ine-anti-blocking performance entle.
4. Kutheni isikhondo sevalve yevalve elawulayo esithe ngqo sibhityile?i
Ibandakanya umgaqo olula womatshini: kokukhona ukukhuhlana okukhulu kokutyibilika, ukukhuhlana okuncinci kukuqengqeleka.Isiqu sevalve yestroke ethe tye siyehla sinyuka.Ukuba ukuhlohlwa kucinezele kancinane, kuya kusonga isikhondo ngokuqinileyo, kubangele i-hysteresis enkulu.Ukuza kuthi ga ngoku, isiqu sevalve senzelwe ukuba sincinci kwaye sincinci kwaye ukugcwala kusebenzise i-PTFE ene-coefficient encinci ye-friction ukwenzela ukunciphisa i-hysteresis.Kodwa ingxaki evela kule nto kukuba i-valve stem enqabileyo ilula ukugoba kwaye ukugxusha kunobomi obufutshane benkonzo.Ukusombulula le ngxaki, eyona ndlela ilungileyo kukusebenzisa isiqu sevalve ejikelezayo, ivalve elawulayo efana ne-rotary stroke.I-valve stem yayo i-2 ukuya ku-3 amaxesha amaninzi kune-valve ye-valve eqondileyo, kwaye ukupakishwa kwegraphite kunye nobomi obude benkonzo isetyenziselwa ukuphucula ukuqina kwe-valve stem.Ewe, ukupakishwa kunobomi obude benkonzo, kodwa i-torque yayo ye-friction incinci kwaye i-hysteresis incinci.
5. Kutheni umahluko wokunqunyulwa koxinzelelo lweevalvu zekota zokujika umkhulu?i
Iivalvu zekota zinomehluko omkhulu woxinzelelo olusikiweyo ngenxa yokuba amandla avelayo aveliswa liphakathi kumbindi wevalve okanye ipleyiti yevalvu ivelisa umzuzu omncinci kakhulu kwishafti ejikelezayo, ngoko inokumelana nomahluko omkhulu woxinzelelo.
6. Kutheni izivalo zebhabhathane ezinerabha ezinerabha kunye nezivalo zediaphragm ezine-fluorine zinexesha elifutshane lenkonzo kumanzi akhutshwe ityuwa?i
Indawo yamanzi agalelwe ityuwa iqulethe i-asidi ephantsi okanye i-alkali, eyonakalisa kakhulu irabha.I-Corrosion yerabha ibonakala njengokwandiswa, ukuguga, kunye namandla aphantsi.Izivalo zebhabhathane kunye neevalvu zediaphragm ezinerabha azisetyenziswa kakuhle.Undoqo kukuba irabha ayixhathisi kwi-corrosion.Ivalve yangasemva enerabha yediaphragm iye yaphuculwa yaba yivalve ene-fluorine-lined diaphragm ekwaziyo ukumelana nokudleka, kodwa i-diaphragm yevalve ene-fluorine diaphragm ayikwazanga ukumelana nokusongwa phezulu naphantsi kwaye yophukile, ibangela ukonakala komatshini kunye nokwenza bufutshane ubomi be-diaphragm. ivalve.Indlela efanelekileyo ngoku kukusebenzisa i-valve yebhola ekhethekileyo yonyango lwamanzi, engasetyenziselwa iminyaka emi-5-8.
7. Kutheni ivalve yokusika kufuneka itywinwe ngamandla kangangoko?i
Ivalve esikiweyo ifuna okusezantsi ukuvuza, ngcono.Ukuvuza kwevalve etywiniweyo kokona kuphantsi.Ewe kunjalo, umphumo wokunqunyulwa ulungile, kodwa awugugi kwaye unokuthembeka okubi.Ukujonga kwimigangatho ephindiweyo yokuvuza okuncinci kunye nokutywinwa okuthembekileyo, ukunqunyulwa kwetywina okuthambileyo akulunganga njengokunqunyulwa kwetywina eliqinileyo.Ngokomzekelo, i-valve ye-ultra-light regulating egcweleyo ivaliwe kwaye ikhuselwe ngama-alloys angaguqukiyo, anokuthembeka okuphezulu kunye nesantya sokuvuza se-10-7, esele ikwazi ukuhlangabezana neemfuno zokuvala ukuvala.
8. Kwakutheni ukuze izivalo zemikhono zithathe indawo yesitulo esinye kunye nesitulo esiphindwe kabini zisilele?i
Iivalve zemikhono, ezaphuma ngeminyaka yee-1960, zazisetyenziswa kakhulu ekhaya nakwamanye amazwe ngeminyaka yee-1970.Iivalve zemikhono zibalwe inxalenye enkulu yezityalo zepetrochemical ezaziswa kwi-1980s.Ngelo xesha, abantu abaninzi babekholelwa ukuba iivalve zemikhono zinokuthatha indawo yevalve enye kunye neyesibini.Ivalve yesitulo yaba yimveliso yesizukulwana sesibini.Namhlanje, oku akunjalo, iivalvu zesitulo esinye, izitulo ezihlala kabini, kunye neevalvu zemikhono zisetyenziswa ngokulinganayo.Oku kungenxa yokuba i-valve ye-sleeve iphucula kuphela ifom ye-throttling, kwaye ukuzinza kwayo kunye nokugcinwa kwayo kungcono kune-valve yesitulo esinye, kodwa ubunzima bayo, i-anti-blocking kunye nezibonakaliso zokuvuza zihambelana ne-valve yesitulo esisodwa kunye ne-double-seat.Ingayitshintsha njani ivalve yesitulo esinye kunye nesihlala kabini?Ilaphu loboya?Ngoko ke, inokusetyenziswa kuphela kunye.
9. Kutheni ukukhetha imodeli kubaluleke ngaphezu kokubala?i
Xa kuthelekiswa nokubala kunye nokukhetha, ukhetho lubaluleke kakhulu kwaye luyinkimbinkimbi.Ngenxa yokuba ukubala kuyindlela elula yokubala ifomyula, ayilali ekuchanekeni kwefomula ngokwayo, kodwa ukuba iiparameters zenkqubo enikeziweyo zichanekile.Ukukhetha imodeli kubandakanya umxholo omninzi, kunye nokungakhathali okuncinci kuya kukhokelela ekukhethweni okungafanelekanga, okungayi kubangela kuphela inkcitho yabasebenzi, izixhobo eziphathekayo, kunye nemithombo yemali, kodwa kubangele iziphumo ezinganelisekanga zokusetyenziswa, eziya kuzisa iingxaki ezithile ekusebenziseni, ezifana. njengokuthembeka, ubomi, umgangatho wokusebenza njl.
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