Emavalvu emhlaba, emavalvu esango, emavalvu ebutterfly, emavalvu ekuhlola kanye nemavalvu ebhola tonkhe tincenye tekulawula letidzingekako etinhlelo letehlukene temapayipi lamuhla. Njalo valve ihlukile ngekubukeka, isakhiwo ngisho kusetjentiswa lokusebenta. Nomakunjalo, le globe valve kanye ne gate valve kunekufana lokutsite ngekubukeka, futsi ngesikhatsi lesifanako inemsebenti wekunciphisa emaphayiphini, ngako kutawuba nebangani labaningi labangenakutsintsana kakhulu ne valve kudidanisa laba lababili. Ecinisweni, uma ubukisisa, umehluko emkhatsini wevalve yemhlaba kanye nevalve yesango usemkhulu impela.
- Kwakhiwa
Endabeni yesikhala sekufaka lesilinganiselwe, kuyadzingeka kutsi unake kukhetsa:
Le valve yesango ingavalwa kahle ngendzawo yekuvala ngekwetsembela kumfutfo losemkhatsini, kute kuzuzwe umphumela wekungavuzi. Uma kuvulwa nekuvala, i-valve spool kanye nendzawo yekuvala yesitulo se-valve kuhlala kuchumana futsi kuhlikihla, ngako-ke indzawo yekuvala kulula kuyigcoka, futsi uma i-valve yesango isondzele ekuvaleni, umehluko wekucindzeteleka emkhatsini wangaphambili nangemuva kwephayiphi mkhulu kakhulu, kwenta kutsi indzawo yekuvala ibe mkhulu kakhulu.
Isakhiwo sevalve yesango sitawuba yinkimbinkimbi kakhulu kunevalve yemhlaba, kusuka endzaweni yekubukeka, esimeni se caliber lefanako, ivalve yesango iphakeme kunevalve yemhlaba, futsi ivalve yemhlaba yindze kunevalve yesango. Ngetulu kwaloko, ivalve yesango ihlukaniswe ibe yinduku lekhanyako kanye nenduku lemnyama. I valve yemhlaba ayikho.
- Umsebenti
Uma le globe valve ivulwa futsi ivalwe, luhlobo lwesicu lesikhuphukako, lokusho kutsi, lelisondvo lesandla liyajikeleta, bese lelisondvo lesandla litawenta kujikeleta kanye nekunyakata kwekuphakamisa kanye nesicu se valve. Le valve yesango kutsi ijike lisondvo lesandla, kwentela kutsi sicu sente umnyakato wekuphakamisa, bese indzawo yelisondvo lesandla yona ngekwayo ihlala ingashintjwa.
Emazinga ekugeleta ayahlukahluka, ngemavalvu esango ladzinga kuvalwa ngalokugcwele noma ngalokugcwele, kantsi emavalvu emhlaba akakwenti. I-valve ye-globe inendlela lecacisiwe yekungena nekuphuma, futsi i-valve yesango ayinato tidzingo tendlela yekungenisa nekutfumela.
Ngetulu kwaloko, i-valve yesango ivulekile ngalokuphelele noma ivaliwe ngalokuphelele imibuso lemibili, kuvulwa kwesango nekuvalwa kwe-stroke kukhulu kakhulu, sikhatsi sekuvula nekuvala sidze. Le valve ipuleti lekuhamba kwe stroke ye globe valve incane kakhulu, futsi ipuleti ye valve ye globe valve ingama endzaweni letsite ekunyakateni kwentela kulungisa kugeleza. I valve yesango ingasetjentiswa kuphela truncation futsi ayinawo lomunye umsebenti.
- Kusebenta
I valve globe ingasetjentiswa truncation kanye umtsetfo ukugeleza. Kumelana kwemanti kwe globe valve kukhulu kakhulu, futsi kusebenta kakhulu kuvula nekuvala, kepha ngenca yekutsi ipuleti le valve imfisha kusuka endzaweni yekuvala, kuvula nekuvala stroke imfisha.
Ngoba ivalve yesango ingavulwa kuphela ngalokuphelele futsi ivalwe ngalokuphelele, uma ivulwe ngalokuphelele, kumelana kwekugeleta lokusemkhatsini emseleni wemtimba wevalve kucishe kube ngu-0, ngako-ke kuvulwa nekuvalwa kwevalve yesango kutawuba kusebenta kakhulu, kepha ipuleti lesango likhashane nendzawo yekuvala futsi sikhatsi sekuvala sidze, futsi i-o.
- Kufakwa kanye nendlela yekugeleza
Umphumela we valve yesango legeleta kuto totimbili tindlela uyafana, futsi kute sidzingo sendlela yekungena nekuphuma yekufakwa, futsi umkhatsi ungageleta kuto totimbili tindlela. Le valve yemhlaba idinga kufakwa ngekuhambisana ngalokucinile nendlela yekukhonjwa kwemcibisholo wemtimba wevalve, futsi kunekuhlinzekwa lokucacile ngendlela yekungeniswa nekutfunyelwa ngaphandle kwevalve yemhlaba, kanye nendlela yekugeleza yevalve yemhlaba “letintsatfu kuya” eChina kusuka etulu kuya phansi.
Le globe valve iphansi ngekhatsi futsi iphakeme ngaphandle, futsi kusuka ngaphandle kunemaphayiphi lasobala langasiwo esigabeni sesigaba. Umgijimi wevalve yesango usemgceni lovundlile. I-stroke ye-valve yesango mkhulu kunaleyo ye-valve ye-globe.
Kusuka kumbono wekumelana nekugeleta, kumelana nekugeleta kwevalve yesango kuncane uma kuvulekile ngalokuphelele, futsi kumelana nekugeleta kwevalve yekumisa umtfwalo kukhulu. I coefficient ukumelana ukugeleza valve isango evamile cishe 0.08 ~ 0.12, emandla kuvula kanye nekuvala encane, kanye medium kungageleza ngetindlela letimbili. Kumelana kwekugeleza kwemavalvu ekuvala lokuvamile kuphindvwe ka-3-5 kunaloko kwemavalvu esango. Lapho kuvulwa nekuvala, kuyadzingeka kutsi kuphocelele kuvalwa kuze kuzuzwe uval, i-valve spool ye-valve ye-globe ithinta kuphela nendzawo yekuvala lapho ivaliwe ngalokuphelele, ngako-ke kugcoka kwendzawo yekuvala kuncane kakhulu, ngoba kugeleza kwemandla lamakhulu kudzinga kwengeta i-actuator yekulawula Of the kufanele . kulungisa.
I valve yemhlaba inetindlela letimbili tekufakwa, munye kutsi le medium ingangena kusuka ngephansi kwe valve spool, inzuzo kutsi uma ivalve ivaliwe, le package ayikho ngaphansi kwengcindezi, impilo yesevisi yekupakisha ingakhuliswa, futsi umsebenti wekufaka esikhundleni se packing ungakwentiwa ngaphansi kwengcindezi emgceni wevalve phambi kwe; lokubi kutsi i-torque yekushayela ye-valve inkhulu, lecishe ibe tikhatsi letingu-1 leyo yekugeleta lokungetulu, futsi emandla e-axial esicu se-valve makhulu, futsi sicu se-valve kulula kugoba.
Ngakoke, lendlela ivame kulungele kuphela emavalvu emhlaba lanebubanti lobuncane (DN50 noma ngaphansi), futsi emavalvu emhlaba langetulu kwe DN200 akhetfwa ngendlela yetindzaba letigeletako kusuka ngetulu. (Emavalvu ekuvala gezi avame kusebentisa lendlela yekungena kusuka ngetulu.) Lokungakalungi kwendlela imidiya lengena ngayo kusuka ngetulu kuphambene ncamashi nendlela lekungena ngayo ngephansi.
- Kuvala
Indzawo yekuvala ye-valve ye-globe iluhlangotsi loluncane lwe-trapezoidal lwe-valve core (ikakhulukati buka kwakheka kwe-valve core), uma umgogodla we-valve uwela, kulingana nekuvalwa kwe-valve (uma umehluko wekucindzeteleka mkhulu, vele, kuvalwa akucinile, kepha umphumela lomubi we-valve we-valve akusiyo . ipuleti lesango le-core, umphumela wekuvala awukalungi njenge-valve ye-globe, futsi umgogodla we-valve ngeke uwe njenge-valve ye-globe.
Sikhatsi sekuposa: Indlovana-01-2022
