Iglobhu yoLawulo lweValve

Uhlobo lweCage-Seat single-Seat Globe Control Valve

I-Cage Type yesitulo esinye i-Globe Control Valve ithatha isakhiwo esikhokelelwayo sekheji kunye noxinzelelo lweplagi elinganayo. Ilungele izicelo ezinoxinzelelo oluphezulu lolwahlulo. Ukutywinwa okulinganayo kuthatha indawo yesihlalo esiphezulu ukutshintsha i-cage yendabuko ye-valve yesihlalo esiphindwe kabini kwisakhiwo se-cage-seat single. Olu phuculo luphucule kakhulu iklasi yokuvala ivalve yekheji. Iplagi yenza ukusetyenziswa koxinzelelo olulungeleleneyo lwesakhiwo, amandla okuvula kunye nokuvala aphantsi kwaye i-medium phantsi kweemeko zenkonzo kunye noxinzelelo oluphezulu oluphezulu lunokulawulwa nge-actuator thrust ephantsi. isetyenziswa ngokubanzi kulawulo lolwelo kwimibhobho yobushushu obuphakathi kunye obuphantsi kunye noxinzelelo oluphakathi noluphantsi olufuna uzinzo oluguqukayo olulungileyo. Ngeempawu ezifana nokusebenza kakuhle kokutywinwa, uxinzelelo oluphezulu oluvumelekileyo, isikhokelo sekheji, indawo enkulu ekhokelayo, uzinzo oluhle kunye nesakhiwo esibambeneyo, imoto iqonda ukutshintshwa ngokukhawuleza kwi-trims kumgca kunye nokusebenza kakuhle kokugcinwa, ukonga abasebenzi kunye nexesha. I-balance plug structure iqinisekisa ukuba i-actuator thrust efunekayo yeyona iphantsi.

Uhlobo lweCage yesitulo esiphindwe kabini iValve yoLawulo lweGlobhe

Uhlobo lwe-HCB Pneumatic Cage Isitulo esiphindwe kabini se-Globe Control valve ithatha isakhiwo esikhokelelwayo sekheji kunye noxinzelelo lweplagi elungeleleneyo. Eyahlukileyo kwi-Cage Type-single-seat Type, olu hlobo lwevalve yokulawula ithatha uhlobo lwe-cage uhlobo lwesakhiwo sesihlalo esiphindwe kabini kwaye isetyenziswa ikakhulu kwizicelo ezingenazo iimfuno eziphezulu zokuvala. Njengoko yamkela isakhiwo sesihlalo esiphindwe kabini, kunye nobuso obubini bokutywinwa buzitywina zetsimbi, uluhlu lweqondo lokushisa lubanzi. Iplagi yenza ukusetyenziswa koxinzelelo olulungeleleneyo lwesakhiwo amandla okuvula kunye nokuvala aphantsi kwaye amajelo eendaba phantsi kweemeko zenkonzo kunye noxinzelelo oluphezulu olwahlukileyo lunokulawulwa nge-actuator thrust ephantsi. I-lts isetyenziselwa ngokubanzi ukulawula ulwelo kwimibhobho yobushushu obuphakathi kunye obuphantsi kwaye ifuna uzinzo oluhle oluguquguqukayo, Ngeempawu ezifana nokusebenza kakuhle kokutywinwa, uxinzelelo oluphezulu oluvumelekileyo lokwahlukana, isikhokelo sekheji, indawo enkulu ekhokelayo, uzinzo oluhle kunye nesakhiwo esihlangeneyo, sinokuqonda ukutshintshwa ngokukhawuleza kweetrim kumgca kunye nokusebenza kakuhle kokugcinwa, ukugcina abasebenzi kunye nexesha. I-balance plug structure iqinisekisa ukuba i-actuator thrust efunekayo yeyona iphantsi.

Imingxunya emininzi iValve yokuLawula ingxolo ePhantsi

I-Pneumatic Multi hole ephantsi yoLawulo lweValve yokuLawula ingxolo ithatha i-sleeve ekhokelwayo kunye noxinzelelo lweplagi elungeleleneyo.yivalve yokulawula ukusebenza okuphezulu enozinzo oluhle oluguquguqukayo olulungele iimeko zenkonzo ezinzima. Njengoko umahluko uphezulu ngokwentelekiso kunye nesantya sokuqukuqela esiphakathi siphezulu, iitrim ziya kukhukuliseka kakhulu kwaye zonakaliswe kwaye iveliswe ingxolo ephezulu. Ke ngoko, sitshintsha umkhono wohlobo lwefestile kwi-multichoke sleeve. kulwelo icala lokuhamba libaphezulu-ngaphakathi kwaye lisezantsi-ngaphandle, kwaye imingxuma emininzi igingqika yenza ukuba okuphakathi kuqhube ungquzulwano ngaphakathi komkhono, ukuze kutye amandla angaphakathi kunye nokunciphisa isantya sokuhamba. Kwirhasi kunye nemidiya, ulwalathiso lokuhamba luhlala luphantsi kwaye luphezulu, ukuze i-ga medium ifezekise ukwandiswa kwevolumu ngasemva kwesihlalo emva kwe-throttling nge-sleeve ye-multi hole kunye noxinzelelo lwe-medium kuncitshiswe ukuthoba ukuhamba kwesantya. Iindawo zolu hlobo lwevalvu yolawulo ziyatshintsheka nezo zodidi lweCage isitulo sokulawula iValve yesitulo esinye ngaphandle kokuba umkhono utshintshelwe kudidi lwe-Mult-hole.
Ivalve yolawulo lokuwisa i-Multi-Stage Pressure

I-valve yokulawula i-multi-stage Pressure drop control ithatha isakhiwo esikhokelelwayo semikhono kunye noxinzelelo lweplagi elinganayo. isetyenziswa kakhulu kwiimeko zenkonzo kunye noxinzelelo oluphezulu oluhlukeneyo kunye nezicelo ezivelisa i-flash evaporation kunye ne-cavitation. Ngokweeparamitha ezahlukeneyo, iyilwe ngeekheji ezahlukeneyo zokulahla uxinzelelo ezenza i-Multi-stage pressure drop trim. Iikheji ezilungiselelwe ngokwemiqathango yenkonzo eyahlukeneyo ziqinisekisa ukuba ukuvela kwe-evaporation ngokukhawuleza kunye ne-cavitation kwixabiso kupheliswa. I-Throttling iqhutyelwa ukususela kwixesha apho ukudibanisa okuphakathi kwi-cage yokuqala, kwaye uxinzelelo oluphezulu oluhlukeneyo kwi-inlet luyancipha ngokuthe ngcembe emva kwamaxesha amaninzi okuxubha. Ngaloo ndlela kuqinisekiswa ngokufanelekileyo ukuba uxinzelelo luhlala lungaphezulu koxinzelelo lomphunga ogcweleyo xa ukuhamba okuphakathi kwi-valve, kunye nokuvela kwe-flash evaporation kunye ne-cavitation kupheliswa, ukwenzela ukuba ubomi benkonzo yombono wokulawula bubude phantsi kweemeko ezinzima zenkonzo.

Cavitation imbangela kunye nesisombululo

Unobangela weCaviation
Xa uxinzelelo lwe-fluid luncitshiswe kwi-saturated vapor pressure okanye ngaphantsi, i-flash evaporation okanye i-bubbles iya kwenzeka.kwininzi yeevalvu zokulawula umfanekiso we-5), uxinzelelo lokungena luyi-p1, i-velocity yi-V1. Xa i-fluid idlula kwindawo ye-plug necking, isantya sonyuswa kwi-Vvc Ngokomgaqo wokugcinwa kwamandla, uxinzelelo lwe-fluid luwela ngokukhawuleza kwi-Pvc. Xa i-Pvc ilingana okanye ingaphantsi koxinzelelo lolwelo oluzele ngumphunga wePv, ulwelo luya kwenziwa igasified kunye namaqamza aya kuveliswa, ukuze kubekho ukuphuphuma kombane. Emva kokuba i-fluid idlule kwiplagi, uxinzelelo luqala ukubuyiselwa kwaye amandla e-kinetic adluliselwa kumandla anokubakho kwakhona Xa uxinzelelo lubuyiselwa kuxinzelelo olusezantsi, olubonakaliswa njenge-p2 kunye ne-V2 yesantya. Xa uxinzelelo olubuyiselweyo ludlula uxinzelelo lwe-Pv, iibhubhu ezenziweyo ziya kuphulwa kwaye i-cavitation iya kwenzeka. Olu hlobo lokukhutshwa kwamandla luya kwandisa uxinzelelo oluyinxenye ukuba lube ngaphezu kwe-200000psl (1400MPa) kwaye uxinzelelo luya kutshabalalisa ngokukhawuleza iplagi eqinile.

Isisombululo kwiCavitation

Ivalve yokulawula i-labyrinth inokuphelisa ngokufanelekileyo umonakalo obangelwa kukungaphumeleli kolawulo lwesantya solwelo. Okokuqala, ulwelo lusasazwa kwimijelo emincinci emininzi. Ngaloo ndlela, nangona iibhubhu zenziwe, umthamo wabo uncinci kakhulu kwaye amandla akwanele ukuvelisa uxinzelelo olunokonakalisa izinto eziphathekayo, okwesibini, ukuhamba kwesantya kugcinwa kwinqanaba eliphantsi. Ngaloo ndlela, uxinzelelo oluyinxenye aluyi kuncitshiswa ukuba lube ngaphantsi kunoxinzelelo lwe-fluid vaporizing. Ngoko ke, i-cavitation ayiyi kwenzeka. Umonakalo obangelwa yi-cavitation ngumqondiso oqhelekileyo obonisa ukungaphumeleli kolawulo lokuhamba kwesantya. Njengoko kukhankanyiwe ngasentla, ukwamkelwa kwezinto ezinobunzima obuphezulu, i-sleeve ye-insulating okanye i-orifice ephantsi iya kuphelisa kuphela inani elincinci leziphoso kwi-valve ebangelwa yi-cavitation. Isantya esiphezulu esisezantsi siya kubangela i-cavitation kwaye yonakalise iplagi, kwaye isisombululo se-cavitation kukwamkela i-labyrinth cage njengoko kuboniswe kumfanekiso.

• Amaxabiso e-KV ahambelanayo wevalve yolawulo lweglowubhu kunye noHambo (EQ% / Linear)