I-valve ye-flameproof yokukhethwa kwesixhobo sombane kufuneka inikele ingqalelo kwiingongoma eziphambili zokukhetha i-valve yokungenisa

I-valve ye-flameproof yokukhethwa kwesixhobo sombane kufuneka inikele ingqalelo kwiingongoma eziphambili zokukhetha i-valve yokungenisa

Amanqaku aphambili kufuneka athathelwe ingqalelo xa ukhetha isixhobo sombane sokuthintela umliloivalve
Xa ukhetha isixhobo sombane sevalve yokumelana nomlilo kunye nokumisela iimfuno zokusebenza, amanqaku aphambili ekufuneka aqwalaselwe ukubandakanya ukumisela inqanaba lokhuseleko le-IP lesixhobo sombane sevalve yokumelana nomlilo, amandla ombane wesixhobo sombane sombane, i-90 esebenzayo. ixesha lesixhobo sombane sevalve engenamlilo kunye nefom ye-actuator yombane.
1. Misela inqanaba lokhuseleko lwe-IP yesixhobo sombane sevalve engenamlilo
Ekukhethweni kwesixhobo sombane se-valve ye-flameproof, okokuqala, ngokwendawo yokusebenza kunye neemfuno zokusetyenziswa ukumisela inqanaba lokukhusela i-IP yesixhobo sombane sombane. Unikezelo lwamanzi ngokubanzi kunye nenkqubo yokuhambisa ivalve yombane isixhobo sokuqhuba ngokwendawo yokusebenza eyahlukileyo inokwahlulwa ibe kudidi lwangaphandle, uhlobo lwangaphakathi. Inqanaba le-IP lokukhusela eliqhelekileyo elisetyenziselwa izixhobo zokuqhuba ivalve yombane yangaphandle yi-IP54 okanye i-IP55, kunye nenqanaba lokukhusela le-IP eliqhelekileyo elisetyenziselwa izixhobo ze-valve zombane zangaphakathi yi-IP43 okanye i-IP44. Ngokubanzi, izixhobo zokuvula iivalvu zombane zonikezelo lwamanzi kunye neenkqubo zokuhambisa amanzi azikwazi ukuntywiliselwa emanzini. Umgangatho wokhuseleko we-IP wesixhobo sombane sevalve engatshiyo uya kucetywa kwaye ugqitywe ngobonelelo lwamanzi kunye neengcali zokuhambisa amanzi.
2. Misela umbane wombane wevalve yesixhobo sombane esingenamlilo
Okwangoku, amandla ombane ombane asetyenziswa ngokuqhelekileyo ngabasebenzisi basekhaya yi-380V kunye ne-24V, ekufuneka igqitywe ngokwemiqathango yokunikezelwa kwamandla ebonelelwa ngamazwe angaphandle.
3. Misela i-90 yexesha elisebenzayo lesixhobo sombane sevalve engatshiyo
Ixesha le-90 elisebenzayo lesixhobo sombane esibizwa ngokuba yi-valve ye-flameproof, oko kukuthi, ixesha elifunekayo ukuze i-valve yombane ivule kwaye ivale endaweni, iimfuno zichongwa ngabavelisi beengcali ze-valve kunye nesixhobo sombane sombane. Ixesha elisebenzayo le-90 eliqhelekileyo lihluka ukusuka kwi-7.5 ukuya kwi-30s, kodwa kufuneka lihlangabezane neemfuno zenkqubo yenkqubo yamanzi. 90 Okukhona liba lifutshane ixesha lokubaleka, kokukhona amandla enjini esixhobo sombane sevalve engatshiyo, kokukhona uphezulu umsinga.
Impompo yamanzi yamandla aphezulu idla ngokuqalwa ngomthwalo olula kunye nevalve evaliweyo ukunciphisa umsinga wempompo yamanzi ukuqala. Umbhobho wokukhupha umpompo wamanzi uxhotyiswe ngevalve yokutshekisha, ivalve yombane, njl. Ngokuqhelekileyo, ixesha lokuqala levalve evaliweyo yi-10 ~ 30s. Ngoko ke, ixesha elisebenzayo le-90 lesixhobo sombane se-valve ye-flameproof ye-valve yombane yepompo yokukhupha amanzi kufuneka ihambelane nexesha lokuqala le-valve evaliweyo egqitywe ngukunikezelwa kwamanzi kunye nenkqubo yokuhambisa amanzi. Ukuba isantya sokuvula kunye nokuvala i-valve sikhawuleza kakhulu, kulula ukuvelisa i-hammer phenomenon yamanzi.
Kumashishini oshishino kunye nemigodi, adla ngokuxhotyiswa ngetanki yokhuseleko okanye inkqubo yonikezelo lwamanzi olungxamisekileyo lwengozi yonikezelo lwamanzi. Kukwakho nevalve yombane esisigxina kumbhobho wonikezelo lwamanzi olungxamisekileyo. Ukuze kuqinisekiswe ukhuseleko lwemveliso, i-valve yombane yombhobho wokuhambisa amanzi ngengozi idinga ukuvulwa ngexesha elifanelekileyo kunye nokuphendula okubuhlungu. Ke ngoko, ixesha elisebenzayo le-90 lesixhobo sombane sevalve ye-Chongqing yevalve engatshiyo kufuneka icuthwe kangangoko kunokwenzeka.
Ukhetho oluthile lwevalvu yevalve yokungena ephuma kumazwe angaphandle ibhekisa ikakhulu kwiimpawu zangaphandle, ngakumbi iYurophu kunye neUnited States, iibrendi zaseJapan, iibrendi ezimele ngaphezulu zibandakanya iBritane yamthumela, amandla eJamani LIT, ijezi yaseJapan yaseKiTZ, eUnited States, iRETZ. , ezifana uhlobo lwevalve yeemveliso ubukhulu becala zithengwa kumazwe angaphandle, ivalve yebhola ephuma kumazwe angaphandle, ivalve yolawulo lokungeniswa elizweni, ivalve yebhabhathane, ivalve yokunciphisa uxinzelelo olungenisiweyo, ivalve yesolenoid ephuma kumazwe angaphandle, kunye nomgangatho wemveliso, uxinzelelo, ubushushu, izinto, uqhagamshelo. imowudi, imo yokusebenza kunye nezinye iiparamitha zininzi, ngokwemfuno yokwenyani
Ivalve yevalvu yokungenisa ibhekisa ikakhulu kwiimpawu zangaphandle, ikakhulu iYurophu kunye neUnited States, iibrendi zaseJapan, iibrendi ezimele ngakumbi zibandakanya iBritane yamthumela, amandla eJamani LIT, ijezi yaseJapan yaseMantla KITZ, eUnited States, iRETZ, efana nohlobo lwevalvu. Iimveliso ubukhulu becala zithengwa kumazwe angaphandle, ivalve yokungena, ivalve yokulawula ukungeniswa, ivalve yebhabhathane, ivalve yokunciphisa uxinzelelo lokungenisa elizweni, ivalve yombane yombane, njl. imo yokusebenza kunye nezinye iiparamitha zininzi, kufuneka ukhethe ivalve efanelekileyo ngokweemfuno zangempela, iimpawu zemveliso; Kweli phepha, lidityaniswe ne-brand yaseJamani i-LitLIT yaseJamani, eye yadunyiswa ngabathengi, ukhetho oluthile lwee-valve ezithunyelwa ngaphandle luhlalutywa:
A, iimpawu zevalve yokungenisa zinokusetyenziswa kweempawu kunye neempawu zesakhiwo
I-1, ukusetyenziswa kweempawu zevalvu ezithunyelwa ngaphandle
Ukusebenzisa iimpawu ukugqiba usetyenziso oluphambili lwendlela yokusebenza kwevalve kunye noluhlu losetyenziso, lweempawu zokusetyenziswa kwevalve zezi: udidi lwevalvu (ivalve yesekethe evaliweyo, ivalve elawulayo, ivalve yokhuseleko, njl.); Uhlobo lwemveliso (ivalve yesango, ivalve yeglowubhu, ivalve yebhabhathane, ivalve yebhola, njl.); Iindawo eziphambili zevalve (umzimba wevalve, isigqubuthelo, isiqu, idiski, umphezulu wokutywina) izinto; Imowudi yokuhambisa iValve, njl.
2. Iimpawu zesakhiwo
Iimpawu zesakhiwo zigqiba ukufakela, ukulungiswa, ukugcinwa kunye nezinye iindlela zeempawu ezithile zesakhiwo sevalve, ziyinxalenye yeempawu zesakhiwo sobude besakhiwo sevalve kunye nokuphakama ngokubanzi, kunye nefom yoqhagamshelo lombhobho (uqhagamshelo lweflange, uqhagamshelo lwentambo, uqhagamshelo lwehupula. , uxhulumaniso lwentambo yangaphandle, uxhumano lwe-welding end, njl.); Indlela yokutywina (faka i-ring, i-thread ring, i-surfacing, i-welding yokutshiza, umzimba womzimba); Ifom yesakhiwo se-valve stem (intonga ejikelezayo, intonga yokuphakamisa), njl.
Eyesibini, ukhetho lwamanyathelo evalvu
I-valve ecacileyo kwisixhobo okanye ukusetyenziswa kwesixhobo, misela iimeko zokusebenza zevalve: i-medium esebenzayo, uxinzelelo lokusebenza, ukushisa okusebenzayo kunye nokunye; Umzekelo, ukuba ufuna ukukhetha ivalve yeglowubhu yeLit-LIT yaseJamani, qinisekisa ukuba i-medium ngumphunga, umgaqo osebenzayo yi-1.3Mpa, ubushushu obusebenzayo yi-200℃.
Ukugqiba ubungakanani begama kunye nemodi yokudibanisa yombhobho odibanisa nevalve: i-flange, intambo, i-welding, njl.; Umzekelo, khetha ivalve yeglowubhu yokungena kwaye uqinisekise ukuba uqhagamshelo lune-flanged.
Qinisekisa indlela yokusebenzisa i-valve: manual, umbane, i-electromagnetic, i-pneumatic okanye i-hydraulic, i-electro-hydraulic linkage, njl. Umzekelo, ukhetho luyi-valve yokumisa manual.
Ngokwendlela yokuhambisa umbhobho, uxinzelelo olusebenzayo, ubushushu obusebenzayo ukumisela iqokobhe levalve ekhethiweyo kunye namalungu angaphakathi ezinto: intsimbi etyhidiweyo, intsimbi yekhabhoni, insimbi engenasici, intsimbi yealloyi, intsimbi enganyangekiyo, intsimbi engwevu, intsimbi ethambileyo, i-ductile iron, i-alloy yobhedu, njl.
Khetha uhlobo lwevalve: ivalve yesiphaluka evaliweyo, ivalve elawulayo, ivalve yokhuseleko, njl.;
Qinisekisa uhlobo lwevalve: ivalve yesango, ivalve yeglowubhu, ivalve yebhola, i-butterfly valve, ivalve ye-throttle, ivalve yokhuseleko, ivalve yokunciphisa uxinzelelo, i-steam trap, njl.
Ukumisela iiparitha zevalve: kwi-valve ezenzekelayo, ngokweemfuno ezahlukeneyo zokumisela ukuchasana okuvumelekileyo, ukukhupha umthamo, uxinzelelo lwangemva, njl.
Qinisekisa iiparameters zejometri ezikhethiweyo zevalve: ubude besakhiwo, ifom yokudibanisa i-flange kunye nobukhulu, vula kwaye uvale ulwalathiso lokuphakama kwevalve yobukhulu, ukudibanisa ubungakanani bomngxuma we-bolt kunye nenombolo, ubungakanani bemilo yevalve yonke;
Sebenzisa ulwazi LUFUMANEKAYO: ikhathalogu yemveliso ye-VALVE, isampuli yemveliso yevalve, njl., Ukukhetha imveliso yevalve efanelekileyo.
Isithathu, khetha isiseko sevalve
Ukusetyenziswa kwevalve ekhethiweyo, iimeko zokusebenza kunye nemodi yokulawula ukusebenza;
Ubume bomsebenzi osebenzayo: uxinzelelo olusebenzayo, ubushushu bokusebenza, ukusebenza kwe-corrosion, nokuba iqulethe amasuntswana aqinileyo, ingaba i-medium inetyhefu, ingaba iyatsha, i-explosive medium, i-viscosity ephakathi, njl. Umzekelo, ufuna ukukhetha i-valve ye-solenoid yaseJamani LIT, ephakathi nendawo enokutsha, eqhumayo, ngokubanzi khetha ivalve ye-solenoid yobungqina bokudubula; Umzekelo, ukukhetha ivalve yebhola ye-LIT yaseJamani, ephakathi equkethe amasuntswana aqinileyo, ngokubanzi ukukhetha ivalve yebhola eqinileyo enemilo engu-V.
Iimfuno zeempawu ze-valve fluid: ukuxhathisa ukuhamba, ukukhupha umthamo, iimpawu zokuhamba, ibakala lokutywinwa, njl.;
Ubungakanani bofakelo kunye neemfuno zangaphandle zangaphandle: i-diameter yegama, ukudibanisa kunye nombhobho kunye nobukhulu bokudibanisa, ubungakanani bangaphandle okanye umda wobunzima, njl.
Ukuthembeka kweemveliso zevalve, ukuqhuma-ubungqina bokusebenza kwesixhobo sombane kunye nobomi benkonzo yeemfuno ezongezelelweyo (xa iiparamitha ezikhethiweyo kufuneka zinikwe ingqwalasela: ukuba i-valve isetyenziselwa iinjongo zokulawula, kufuneka inqume le parameters ilandelayo, iindlela zokusebenza, uthelekiso; kunye * * nokuhamba okuncinci, ukuhla koxinzelelo oluqhelekileyo lokuhamba, uthelekiso lokuhla koxinzelelo kunye nevalve ivaliwe kwaye * * uxinzelelo oluncinci lokungena).
Ngokutsho kolu khetho lungentla lwesiseko sevalve kunye namanyathelo, ukhetho olufanelekileyo noluchanekileyo lwevalve kufuneka lube nolwazi olunzulu lwesakhiwo sangaphakathi seentlobo ezahlukeneyo zeevalvu, ukuze ukwazi ukukhetha ngokufanelekileyo ivalve ukwenza ukhetho oluchanekileyo.
Ulawulo lokugqibela lombhobho yivalve. Ivalve yokuvula kunye neendawo zokuvala zilawula ukuhamba kwe-medium kumbhobho, imilo ye-valve flow channel yenza i-valve ibe neempawu ezithile zokuhamba, ekukhethweni kwenkqubo yombhobho eyona nto ifanele ukufakela ivalve kufuneka ithathe oku. iakhawunti.
Isishwankathelo, ukhetho lwezinto ezininzi: misela ukuba yintoni umsebenzi wokukhetha i-valve, uqinisekise ubushushu, uxinzelelo lwe-medium, uqinisekise ukuhamba kwe-valve kunye nesidingo se-caliber, uqinisekise izinto zevalve, imodi yokusebenza;