Iingxaki eziqhelekileyo kuvavanyo lomlilo lwevalvu Ubudlelwane phakathi kobungakanani bevalvu kunye nesantya esiphakathi
Inkqubo yokuvelisa i-petrochemical industry inzima, kwaye izinto eziluhlaza, iimveliso ezigqityiweyo, iimveliso ezigqityiweyo kunye nezinto ezahlukeneyo ezincedisayo ezisetyenziselwa inkqubo yokuvelisa izinto ezininzi ezinokutsha kunye neziqhushumbisi, ekulula ukubangela umlilo kunye neengozi. Kwaye isetyenziswe kwezinye iimeko umlilo lula yevalve, ngenxa yengozi enokubakho yomlilo, ngokufuthi kuyilo yayo ekhethekileyo, ukuze ivalve ngexesha elithile emva komlilo usenalo umsebenzi wokutywina kunye nokusebenza yokusebenza. Ekulinganiseni ukumelana nomlilo kweevalvu, uvavanyo lomlilo luyindlela ebalulekileyo yokuqinisekisa iivalvu. Uvavanyo lokumelana nomlilo lweevalvu ezisetyenziswa kwishishini lepetrochemical lincanyathiselwe ukubaluleka okukhulu ekhaya nakwamanye amazwe kwaye imigangatho efanelekileyo iphuhlisiwe.
Umgangatho wovavanyo
Ngokweemeko ezahlukeneyo zesicelo kunye nemisebenzi yemveliso, imigangatho yovavanyo lomlilo wevalve nayo yahlukile, njengeAmerican Petroleum Institute iphuhlise umgangatho we-ANSI/API607-2005 wesihlalo esithambileyo 1/4 iivalvu zokujika, i-API6FA-1999 yeevalvu zemibhobho kunye neentloko zemithombo. , kunye ne-API6FD-1995 yeevalvu zokujonga. I-International Organisation for Standardization iseke umgangatho we-ISO10497-2004 wovavanyo lokumelana nomlilo wee-valve ezahlukeneyo, kwaye ilizwe lethu liye laphuhlisa umgangatho we-JB / T6899-1993 oqhelekileyo wenkqubo yokuvavanya umlilo kunye neemfuno zendlela.
Iingxaki eziqhelekileyo kuvavanyo lokumelana nomlilo wevalve
iintlobo ngeentlobo
Ngexesha lomlilo
Uvavanyo loxinzelelo oluphantsi
Uvavanyo lokusebenza
enye
Ivalve yebhola
Ivalve yebhola edadayo
Kokubini ukuvuza kwangaphakathi nangaphandle kwesitulo sevalve ethambileyo kungenzeka, kwaye kunokubakho ukuvuza kwiflange kunye nesiqu sevalve ngexesha lomlilo, ngelixa ukuvuza kwesitulo sevalve yetywina eqinile kuncinci.
Ukuvuza kwangaphakathi kunokunyuka kuvavanyo loxinzelelo oluphantsi emva kokupholisa
Emva kokusebenza, ukuvuza kwangaphandle kulula ukudlula umgangatho, kwaye indawo yokuvuza ngokuqhelekileyo luqhagamshelo lweflange lomzimba wevalve kunye nesiqu sevalve.
Ivalve yebhola ezinzileyo
Kokubini ukuvuza kwangaphakathi nangaphandle kwesitulo sevalve ethambileyo kungenzeka. Ngexesha lomlilo, kunokubakho ukuvuza kwiflange, kwisiqu sevalvu kunye nakwishafti yokuxhasa ibhola yevalve, ngelixa ukuvuza kwesitulo sevalve yesitywina esiqinileyo kuncinci.
Ukuvuza kwangaphakathi kunokunyuka kuvavanyo loxinzelelo oluphantsi emva kokupholisa
Emva kokusebenza kokuvuza kovavanyo lokuvuza kwangaphandle kulula ukudlula umgangatho, indawo yokuvuza ngokuqhelekileyo yi-valve body flange, i-valve stem kunye ne-shaft yokuxhasa ibhola.
Ivalve yebhola enesakhiwo sebhola esisigxina yeyohlobo lokutywina olunyukayo, kwaye ukuvuza kwangaphakathi ngexesha lokutsha kufuneka kutsalwe kumthamo wokugcina amanzi kumngxuma womzimba wevalve.
Ivalve yebhola edityaniswe ngokupheleleyo
Ukuvuza kwangaphakathi kulula ukubonakala, kwaye ukuvuza kwangaphandle kunokuvela kwisiqu
Ukuvuza kwangaphakathi kunokunyuka
Ukuvuza kwangaphandle ngokuqhelekileyo kuncinci, kuphela isiqu esinokubonakala sivuza ngaphandle
Ivalve yesango elisicaba
Ukuvuza kwangaphakathi kuncinci kwezinye iimveliso, ukuvuza kwangaphandle kuqhagamshelo lomzimba wevalve okanye isiqu sinokwenzeka
Ukuvuza kwangaphakathi kuncinci
Emva kokusebenza, uqhagamshelo lomzimba wevalve, isiqu kunye nomngxuma wokukhupha amanzi ziqheleke ekuvuzeni kwangaphandle
umqhagi
Ukuvuza kwevalve ethambileyo kukhulu kakhulu, akunakuqinisekiswa kakuhle, ukuvuza kwevalve eqinileyo kuncinci.
Uvavanyo loxinzelelo oluphantsi emva kokupholisa ukuvuza kwevalve yetywina ethambileyo kudla ngokuba kukhulu, ukuvuza kwevalve eqinileyo kuncinci.
Emva kokusebenza, ukuvuza kovavanyo lokuvuza kwangaphandle kulula ukudlula umgangatho, kwaye indawo yokuvuza ngokuqhelekileyo kukudityaniswa kweflange yomzimba wevalve kunye nesiqu sevalve.
Ivalve yebhabhathane
Ukuvuza kwangaphakathi kulula ukubonakala ngokumalunga nezinye iimveliso, kwaye ukuvuza kwangaphandle kunokuvela kwisiqu
Ukuvuza kulula ukuvela kuvavanyo loxinzelelo oluphantsi emva kokupholisa
Emva kokusebenza, i-valve stem kunye ne-shaft yokuxhasa ixhomekeke ekuvuzeni kwangaphandle
Ivalve yeglobhu
Ukuvuza kwangaphakathi kuncinci kwezinye iimveliso, ukuvuza kwangaphandle kuqhagamshelo lomzimba wevalve okanye isiqu sinokwenzeka
Ukuvuza kwangaphakathi kuncinci
Emva kokusebenza, ukuvuza kovavanyo lokuvuza kwangaphandle kulula ukudlula umgangatho, kwaye indawo yokuvuza ngokuqhelekileyo kukudityaniswa kweflange yomzimba wevalve kunye nesiqu sevalve.
Ivalve yokukhangela
Ukuvuza kwangaphakathi kulula ukuvela kwezinye iimveliso, ukuvuza kwangaphandle kumzimba wevalve kunye noqhagamshelo lwesivalo sevalvu kunokuvela.
Ukuvuza kulula ukuvela kuvavanyo loxinzelelo oluphantsi emva kokupholisa
Emva kokusebenza kokuvuza kovavanyo lokuvuza kwangaphandle kulula ukudlula umgangatho, indawo yokuvuza idla ngokuba ngumzimba wevalvu kunye noqhagamshelo lwesivalo.
Uvavanyo lokumelana nomlilo lwevalvu kukulinganisa uvavanyo lwevalve kwindawo yomlilo. Iyakwazi ukubonakalisa ngokwenene nangempumelelo ukumelana nomlilo wevalve yokuvavanya. Kubaluleke kakhulu kuphando lwesakhiwo sokumelana nomlilo wevalve kunye novavanyo lokumelana nomlilo wevalve.
Idayamitha yeValve kunye nesantya esiphakathi sokuhamba phakathi kobudlelwane phakathi kommandla wokuhamba kwevalve kunye nesantya sokuhamba, ukuhamba kunobudlelwane obuthe ngqo, kunye nesantya sokuhamba kunye nokuhamba zizixa ezibini ezixhomekeke omnye komnye. Xa izinga lokuhamba lihlala lihlala, isantya sokuhamba sikhulu, indawo yomzila wokuhamba ingaba yincinci; Isantya sokuhamba sincinci, indawo yomjelo wokuhamba ingaba mkhulu. Ngokuchasene noko, indawo yomzila wokuhamba inkulu, izinga lokuhamba lincinci; Indawo yomjelo wokuhamba incinci, isantya sayo sikhulu. Isantya sokuhamba kwe-medium sikhulu, ububanzi be-valve bunokuba buncinci, kodwa ilahleko yokuchasana inkulu, i-valve kulula ukuyonakalisa. Izinga lokuhamba okuphezulu, indawo enokutsha kunye nesiqhushumbisi iya kuvelisa isiphumo se-electrostatic, ebangela ingozi; Isantya sokuhamba sincinci kakhulu, asisebenzi kakuhle, asinaqoqosho.
Isantya sokuhamba kunye nesantya sevalve ikakhulu sixhomekeke kububanzi bevalve, kodwa inxulumene nokuchasana kwesakhiwo sevalve ukuya kwindawo ephakathi, kunye noxinzelelo lwevalve, ubushushu kunye noxinzelelo oluphakathi kunye nezinye izinto. unodibaniso oluthile lwangaphakathi.
Ummandla wokuhamba kwevalvu kunye nesantya sokuhamba, isantya sokuhamba sinobudlelwane obuthe ngqo, kunye nesantya sokuhamba kunye nokuhamba zizixa ezibini ezixhomekeke kwelinye. Xa izinga lokuhamba lihlala lihlala, isantya sokuhamba sikhulu, indawo yomzila wokuhamba ingaba yincinci; Isantya sokuhamba sincinci, indawo yomjelo wokuhamba ingaba mkhulu. Ngokuchasene noko, indawo yomzila wokuhamba inkulu, izinga lokuhamba lincinci; Indawo yomjelo wokuhamba incinci, isantya sayo sikhulu.
Isantya sokuhamba kwe-medium sikhulu, ububanzi be-valve bunokuba buncinci, kodwa ilahleko yokuchasana inkulu, i-valve kulula ukuyonakalisa. Izinga lokuhamba okuphezulu, indawo enokutsha kunye nesiqhushumbisi iya kuvelisa isiphumo se-electrostatic, ebangela ingozi; Isantya sokuhamba sincinci kakhulu, asisebenzi kakuhle, asinaqoqosho. Kuphakathi kunye ne-viscosity enkulu kunye nokuqhuma, izinga lokuhamba kufuneka libe lincinci. I-oyile kunye nolwelo kunye ne-viscosity enkulu khetha izinga lokuhamba kunye ne-viscosity, ngokubanzi kuthatha i-0.1 ~ 2m / s.
Ngokubanzi, umthamo uyaziwa kwaye isantya sokuhamba sinokumiselwa ngamandla. Ubungakanani obuqhelekileyo bevalve bungabalwa ukusuka kwinqanaba lokuhamba kunye nesantya sokuhamba.
Ubungakanani beValve bufana, uhlobo lwayo lwesakhiwo luhlukile, ukuxhathisa ulwelo akufani. Ngaphantsi kweemeko ezifanayo, i-coefficient yokumelana ne-valve inkulu, isantya sokuhamba kunye nesantya sokuhamba kwamanzi ngokuhla kwevalve; Incinci i-coefficient ye-valve yokumelana, iyancipha izinga lokuhamba kunye nesantya sokuhamba kolwelo ngevalvu iyancipha.
Ukukhethwa kwedayamitha yevalve kufuneka kuthathelwe ingqalelo ukuchaneka komatshini kunye nokuphambuka kobungakanani bevalve, kunye nezinye izinto. Ubungakanani bevalve kufuneka bube sisixa esithile sobutyebi, ngokubanzi i-15%. Kumsebenzi wangempela, ubungakanani bevalve kunye nobungakanani bombhobho wenkqubo.
Ixesha lokuposa: Aug-20-2022
