Izilumkiso zofakelo kunye nokusebenza kwevalve yeplastiki ye-anticorrosive fluorine Yintoni ekufuneka iqwalaselwe xa kufakelo lwevalve yegesi engamanzi

Amanyathelo okhuseleko ofakelo kunye nokusebenza kwevalve yeplastiki ye-fluorine echasene nomhlwa Yintoni ekufuneka ithathelwe ingqalelo xa kufakelo lwevalve yegesi engamanzi ayinyibilikisiweyo impompo yeplastiki enomhlwa yimpompo yeplastiki esetyenziswa ngokuqhelekileyo ekugqithiseni ulwelo oludlayo olufana neasidi, ialkali netyuwa. Kwangaxeshanye, xa usebenzisa impompo enefluorine enemigca, umbhobho wevalve oqhagamshelayo kufuneka ube ne-anticorrosive. Yintoni ekufuneka ihlawulwe ingqalelo ekusebenzeni kwenkonzo kunye nokufakelwa kwevalve yeplastiki ene-fluorine? Ukukhetha okunengqiqo kunye nokusetyenziswa kwevalve yeplastiki ye-fluorine echasene nomhlwa, wonke umntu UKHATHAZEKILE kwingxaki yobunjineli, impompo yeplastiki ye-fluorine ye-anticorrosive kunye ne-valve kwi-petroleum, ishishini lemichiza, iyeza, isinyithi, amashishini ombane anamandla aphakathi okutshabalalisa njengesixhobo soqhagamshelwano lwe-asidi. sele isetyenzisiwe, kodwa indlela yokukhetha okulungileyo, kunye nolwelo olulungileyo iivalvu zeplastiki zefluorine, ngokutsho kubathengi bethu iminyaka emininzi yamava isicelo endle, La manyathelo okhuseleko alandelayo kufuneka abekwe phambili ukusetyenziswa lobushushu eliphakathi, uxinzelelo, umahluko uxinzelelo kunye nezinye. iimeko xa kukhethwa ivalve ye-fluorine echasene nomhlwa: 1, efakwe ivelufa yeplastiki yefluorine kusetyenziswa iimeko eziphakathi. umaleko weplastiki onefluorine okanye i-PTFE bellows ye-valve core kunye nesitulo sevalvu ekusebenzeni kokuvula nokuvala. I-medium ineengqungquthela ezinzima, iikristale, ukungcola, ukhetho, i-spool, isihlalo singasetyenziselwa i-Hastelloy. 2, enefluorine ivelufa yeplastiki ubushushu obuphakathi. Ifakwe ivalve yeplastiki ye-fluorine, iplastiki ye-fluorine yi-F46 (FEP), ukusetyenziswa kweqondo lokushisa eliphakathi ayinakudlula i-150 ℃ (iqondo lokushisa eliphakathi linokuba yi-150 ℃ ixesha elifutshane, ixesha elide lobushushu kufuneka lilawulwe ngaphakathi kwe-120 ℃), kungenjalo , Ivalve yecandelo ngalinye lining F46 lula ukuthamba, deformation, okubangela valve ivaliwe, ukuvuza okukhulu. Ukuba iqondo lokushisa eliphakathi lisetyenziselwa ixesha elifutshane, iqondo lokushisa lingaphantsi kwe-180 ° C, kwaye iqondo lokushisa lingaphantsi kwe-150 ° C ixesha elide, olunye uhlobo lwe-fluoroplastic-PFA lunokukhethwa, kodwa i-PFA fluoroplastic lining ibiza kakhulu. kunomgca we-F46 kwixabiso, kwaye ukhetho lwemathiriyeli yempompo ye-lining iyafana. 3, musa ukuba noxinzelelo olubi. Ivalve yeplastiki enefluorine kufuneka ikuthintele ukusetyenziswa koxinzelelo olubi kumbhobho, ukuba kukho uxinzelelo olubi, kulula ukwenza ukuba umaleko weplastiki ofakwe kwifluorine kumngxuma wevalvu ufunxelwe ngaphandle (idrum ngaphandle), ukuxobula, okukhokelela ekuvulekeni kwevalvu kunye nokusilela kokuvala. . I-4, efakwe ivalve yokulawula iplastiki ye-fluorine kufuneka ihambisane nokuhamba okufunekayo (ixabiso le-Cv) ukhetho oluchanekileyo lobukhulu be-valve. Xa ukhetha, kufuneka ngokwemfuno yetrafikhi (i-Cv) kunye nezinye iiparamitha zobugcisa zibalwe ubungakanani bevalve kufuneka kukhethwe kunye nokuvulwa kwevalve, njengobungakanani bevalve enkulu kakhulu, ngokuqinisekileyo iya kwenza ivalve kwindawo yokuvula ixesha elide. ixesha ebalekayo, phantsi kwemeko kunokuba amancinane kunye noxinzelelo oluphakathi, ukuze kube lula ukwenza ivalve core kunye intonga ivelufa yimpembelelo eendaba kwaye wenze ivalve ingcangcazela, Intonga core ivelufa phakathi ixesha elide phantsi kwempembelelo, nokuba iyakwenza ukwaphuka kwesikhondo sevalve. I-5, uxinzelelo, umahluko woxinzelelo kufuneka ulawulwe ngaphakathi koluhlu oluvumelekileyo. Ngokukodwa imifunduzo itywina ivalve yeplastiki elawulayo yefluorine, ivalve yeglowubhu. Ngenxa yokuba i-bellows yenziwe ngezinto ze-tetrafluoric, uxinzelelo kunye nokwahlukana koxinzelelo kukhulu, okunokuthi kube lula ukukhokelela ekugqabhukeni kweembhobho. I-Bellows itywina ivalve yokulawula iplastiki yefluorine, ukusetyenziswa koxinzelelo lwemeko, umahluko woxinzelelo mkhulu, unokutshintshwa ube yi-PTFE yokupakisha itywina. Isaziso sofakelo lwevalve ye-LPG yintoni ivalve ye-LPG iyivalve yokutywina enyanzelweyo, ke xa ivalve ivaliwe, uxinzelelo kufuneka lufakwe kwidiski yevalve ukunyanzela umphezulu wokutywina ungavuzi. Xa i-medium ingena kwi-valve esuka ngaphantsi kwe-disc, ukuchasana okuza kunqotshwa ngamandla okusebenza kukunyanzeliswa kwe-friction ye-stem kunye nokupakisha kunye ne-thrust eyenziwa ngoxinzelelo lwe-medium. Amandla okuvala i-valve inkulu kunamandla okuvula i-valve, ngoko ke ububanzi be-valve stem bukhulu, ngaphandle koko impazamo ye-stem top bend iya kwenzeka. Yintoni esifanele sinikele ingqalelo kuyo xa sifaka i-valve yegesi enyibilikisiweyo? I-Xiaobian ekwi-intanethi yevalve iya kukuphendulela yona. Ivalve ye-LPG yivalve yokutywina enyanzeliswayo, ngoko ke xa ivalve ivaliwe, uxinzelelo kufuneka lufakwe kwidiski ukunyanzela indawo yokutywina ukuba ingavuzi. Xa i-medium ingena kwi-valve esuka ngaphantsi kwe-disc, ukuchasana okuza kunqotshwa ngamandla okusebenza kukunyanzeliswa kwe-friction ye-stem kunye nokupakisha kunye ne-thrust eyenziwa ngoxinzelelo lwe-medium. Amandla okuvala i-valve inkulu kunamandla okuvula i-valve, ngoko ke ububanzi be-valve stem bukhulu, ngaphandle koko impazamo ye-stem top bend iya kwenzeka. Yintoni esifanele sinikele ingqalelo kuyo xa sifaka i-valve yegesi enyibilikisiweyo? I-Xiaobian ekwi-intanethi yevalve iya kukuphendulela yona. Amanqaku ofakelo kunye nokugcinwa kwevalve yegesi enyibilikisiweyo: Ivalve yokumisa umbhobho wengqolowa esebenza ngevili lesandla nomqheba unokufakelwa nakweyiphi na indawo kumbhobho. Ivili lesandla, umqheba kunye nendlela yokunyusa ayivumelekanga ukuba isetyenziselwe ukuphakamisa. Ukuhamba kwesiphakathi kuya kuhambelana necala lotolo oluboniswe kumzimba wevalvu. Ivalve yerhasi enyibilikisiweyo, ekwabizwa ngokuba yindawo yokumisa ucango, luhlobo lwesivalo esisetyenziswayo. Iyathandwa kuba ingxabano phakathi komphezulu wokutywina kwinkqubo yokuvula kunye nokuvala incinci, ihlala ixesha elide, ukuphakama kokuvula akukhulu, kulula ukwenza, ukugcinwa okufanelekileyo, akufanelekile kuphela kuxinzelelo oluphakathi kunye noluphantsi, kodwa lufanelekile uxinzelelo oluphezulu. Umgaqo wayo wokuvala kukuxhomekeka kuxinzelelo lwebar yevalve, ukwenzela ukuba i-valve disc yokutywina umphezulu kunye nesihlalo sokutywina umphezulu osondeleyo, uthintele ukuhamba kweendaba. Ivalve ye-LPG ivumela kuphela ukuhamba kwe-unidirectional ye-medium kwaye ine-directality xa ifakwe. Ubude bayo besakhiwo bude kune-valve yesango, ngexesha elifanayo, ukuchasana kwamanzi kukhulu, ukusebenza kwexesha elide, ukuthembeka kokutywinwa akunamandla. Iivalvu ze-LPG zohlulwe zibe ziindidi ezintathu: ngqo ukuya kuthi ga, i-engile yasekunene kunye neevalvu zeglowubhu ezijikelezayo ezihamba ngokuthe tye. Xa i-valve ye-LPG ivuliwe, ukuphakama kokuvula i-disc ye-valve yi-25% ~ 30% ye-diameter ye-nominal, kwaye isantya sokuhamba sifikelele kumlinganiselo omkhulu, obonisa ukuba i-valve ifikelele kwindawo evulekile ngokupheleleyo. Ngoko indawo evulekileyo epheleleyo yevalve yeglowubhu kufuneka imiselwe ngokubetha kwediski yevalve.