Amavalvu we-globe, amavalvu wesango, amavalvu we-butterfly, amavalvu wokuhlola kanye namavalvu webhola zoke zizinto eziqakathekileko zokulawula eenhlelweni ezihlukahlukeneko zamapayipi namhlanjesi. Ivalvu ngayinye ihlukile ngokubukeka, ukwakheka kanye nokusetjenziswa kwayo. Kodwana, i-globe valve ne-gate valve zifana ngokubukeka, begodu ngesikhathi esifanako zinomsebenzi wokunquma epayipini, ngalokho kuzokuba nabangani abanengi abangathintani khulu ne-valve ukudidanisa zombili. Kuhlekuhle, nangabe uqalisisa, umehluko phakathi kwevalvu ye-globe nevalvu yesango usese mkhulu khulu.
- Isakhiwo
Endabeni yesikhala sokufaka esilinganiselweko, kuyatlhogeka ukutjheja ukukhethwa kwa:
Ivalvu yesango ingavalwa ngokuqinileko ngendawo yokuvala ngokuthembela emfuthweni ophakathi, ukwenzela bona kube nomphumela wokungavuzi. Lokha nakuvulwa nokuvalwa, i-valve spool kanye nendawo yokuvala isihlalo se-valve zihlala zithintana begodu zihlikihlana, ngalokho indawo yokuvala kulula ukugqoka, begodu lokha i-valve yesango nayiseduze nokuvala, umehluko womfutho hlangana kwangaphambili nangemuva kwepayipi mkhulu khulu, okwenza bona indawo yokuvala iguge khulu.
Ukwakheka kwevalvu yesango kuzokuba yinkimbinkimbi ukudlula ivalvu ye-globe, ngokuya ngokubukeka, endabeni ye-caliber efanako, i-valve ye-gate iphezulu kune-globe valve, begodu i-globe valve yinde kune-gate valve. Ukungezelela, ivalvu yesango ihlukaniswe yaba yinduku ekhanyayo nenduku emnyama. Ivalvu ye-globe ayikho.
- Umsebenzi
Lokha ivalvu ye-globe nayivulwa begodu ivalwa, kuba mhlobo wesiqu esikhuphukako, okutjho bona, isondo lesandla liyajikelezwa, begodu isondo lesandla lizokwenza ukujikeleza nokuphakamisa ukunyakaza kanye nesiqu sevalvu. Ivalvu yesango kufanele iphendule isondo lezandla, ukwenzela bona isiqu senze ukunyakaza kokuphakamisa, begodu ubujamo besondo lesandla ngokwalo lingatjhuguluki.
Amazinga wokugeleza ayahluka, ngamavalvu wesango atlhoga ukuvalwa ngokupheleleko nofana ngokuzeleko, kuthi amavalvu we-globe awafuni. Ivalvu ye-globe inendlela ekhethiweko yokungena neyokuphuma, begodu ivalvu yesango ayinazo iimfuneko zokungenisa nokuthumela ngaphandle.
Ukungezelela, ivalvu yesango ivuleke ngokupheleleko nofana ivaliwe ngokupheleleko emibusweni emibili, ukuvulwa kwesango nokuvalwa kwe-stroke kukhulu khulu, isikhathi sokuvula nokuvala side. I-valve plate move stroke ye-globe valve mncani khulu, begodu i-valve plate ye-globe valve ingajama endaweni ethileko ekunyakaziseni ukulungiswa kokugeleza. Ivalvu yesango ingasetjenziselwa ukusika kwaphela begodu ayinawo omunye umsebenzi.
- Isenzo
Ivalvu ye-globe ingasetjenziselwa ukunquma nokulawulwa kokugeleza. Ukujamelana noketshezi kwevalvu ye-globe kukhulu, begodu kunzima ukuvula nokuvala, kodwana ngombana ipuleti levalvu lifitjhani ukusuka ebusweni bokuvala, ukuvula nokuvala umtjhini mfitjhani.
Ngombana ivalvu yesango ingavuleka ngokupheleleko begodu ivalwe ngokupheleleko, lokha nayivuliwe ngokupheleleko, ukujamelana kokugeleza okuphakathi emzileni womzimba wevalvu kupheze kube ngu-0, ngalokho ukuvulwa nokuvalwa kwevalvu yesango kuzokonga umsebenzi, kodwana ipuleti lesango likude nendawo yokuvala, begodu isikhathi sokuvula nokuvala side.
- Ukufakwa kanye nendlela yokugeleza
Umphumela wevalvu yesango egeleza emahlangothini womabili uyafana, begodu akukho sidingo sendlela yokungena neyokuphuma yokufaka, begodu umphakathi ungageleza emahlangothini womabili. Ivalvu ye-globe itlhoga ukufakwa ngokuya ngokuqinileko kwendlela yokukhonjwa komcibisholo womzimba we-valve, begodu kunomthetho ocacileko wendlela yokungeniswa nokuthunyelwa kwe-globe valve, begodu indlela yokugeleza kwe-globe valve “emithathu ukuya” e-China isuka phezulu ukuya phasi.
Ivalvu ye-globe iphasi ngaphakathi begodu iphezulu ngaphandle, begodu ngaphandle kunamapayipi abonakalako angekho ezingeni lesigaba. Umgijimi wevalvu yesango usemgqeni ovundlileko. Ukubetha kwevalvu yesango kukhulu kunaleyo yevalvu ye-globe.
Ngokombono wokujamelana nokugeleza, ukujamelana nokugeleza kwevalvu yesango kuncani lokha nayivulekile ngokupheleleko, begodu ukujamelana nokugeleza kwevalvu yokumisa umthwalo kukhulu. I-coefficient yokujamelana nokugeleza kwe-valve yesango ejayelekileko ingaba ngu-0.08~0.12, amandla wokuvula nokuvala mancani, begodu okuphakathi kungageleza ngeendlela ezimbili. Ukujamelana nokugeleza kwamavalvu wokuvala avamileko kuphindwe ka-3-5 kunalawo wamavalvu wesango. Lokha nakuvulwa nokuvala, kuyatlhogeka ukugandelela ukuvala ukufezekisa ukuvalwa, i-valve spool ye-globe valve ihlangana kwaphela nendawo yokuvala lokha nayivaliwe ngokupheleleko, ngalokho ukuguga kwendawo yokuvala kuncani khulu, ngombana ukugeleza kwamandla amakhulu kutlhoga ukungezelela i-actuator ye-globe valve kufanele itjheje ukulungiswa kwe-torque.
I-valve ye-globe ineendlela ezimbili zokufakwa, enye kukobana umtjhini ungangena ngaphasi kwe-valve spool, ubuhle kukobana lokha i-valve nayivaliweko, ukupakisha akukho ngaphasi kwengcindezi, ipilo yokusebenza yokupakisha inganwetshwa, begodu umsebenzi wokubuyisela ukupakisha ungenziwa ngaphasi kwengcindezi ephayiphini ephambi kwe-valve; ububi bokuthi i-torque yokutjhayela ye-valve yikulu, okuyi-1 yesikhathi sokugeleza okuphezulu, begodu amandla we-axial wesiqu se-valve makhulu, begodu isiqu se-valve kulula ukugoba.
Ngalokho-ke, indlela le ivamise ukulungele amavalvu we-globe anobubanzi obuncani (i-DN50 nofana ngaphasi), begodu ama-valve we-globe angaphezulu kwe-DN200 akhethelwa indlela imidiya egeleza ngayo ukusuka phezulu. (Amavalvu wokuvala igezi avamise ukusebenzisa umkhakha ukungena ukusuka phezulu.) Ububi bendlela umtjhini ongena ngayo ukusuka phezulu buphambene ncamashi nendlela engena ngayo ngaphansi.
- Ukuvala
Indawo yokuvala ye-globe valve yihlangothi elincani le-trapezoidal ye-valve core (qala khulukhulu ubujamo be-valve core), lokha i-valve core nayiwela phasi, kuyalingana nokuvalwa kwe-valve (nangabe umehluko wokugandeleleka mkhulu, nakanjani, ukuvalwa akukaqini, kodwana umphumela wokubuyela emuva awusimbi), i-valve yesango ivaliwe ngehlangothini le-valve, ipuleti umphumela wokuvala awusihle njengevalvu ye-globe, begodu umgogodla we-valve angeze wawa njenge-globe valve.
Isikhathi sokuposa: Apr-01-2022
