Butterfly Valve Introduction

Isingeniso:

Ivalve uvemvaneuvela emndenini wamavalvu okuthiwaama-valve e-quarter-turn. Lapho isebenza, i-valve ivuleka ngokugcwele noma ivaliwe lapho i-disc izungeziswa ngokujika kwekota. “Uvemvane” yidiski yensimbi efakwe endukwini. Lapho i-valve ivaliwe, i-disc ivuliwe ukuze ivimbe ngokuphelele umgwaqo. Uma i-valve ivuleke ngokugcwele, i-disc ijikeleziswa ikota ukuze ivumele ukudlula okungavinjelwe koketshezi. I-valve ingase ivuleke kancane kancane ukuze i-throttle flow.

Kunezinhlobo ezahlukene zamavalvu ovemvane, ngalinye lilungiselwe izingcindezi ezihlukene kanye nokusetshenziswa okuhlukile. I-valve uvemvane oyiziro-offset, esebenzisa ukuguquguquka kwenjoloba, inezinga lokucindezela eliphansi kakhulu. I-valve ye-butterfly ye-double offset esebenza kahle kakhulu, esetshenziswa ezinhlelweni zokucindezela okuphezulu kancane, isuswa emgqeni ophakathi nendawo yesihlalo sediski kanye ne-body seal (i-offset one), kanye nomugqa ophakathi we-bore (offset two). Lokhu kudala isenzo se-cam ngesikhathi sokusebenza sokuphakamisa isihlalo ngaphandle kwesigxivizo okuholela ekungqubuzaneni okuncane kunalokho okudalwe kumklamo we-zero offset futhi kunciphisa ukuthambekela kwaso kokugqoka. I-valve efaneleka kakhulu kumasistimu okucindezela okuphezulu ivalve yevemvane ephindwe kathathu. Kule valvu i-axis yokuxhumana yesihlalo sediski iyasuswa, esebenza ukuqeda ukuxhumana okuslayidayo phakathi kwediski nesihlalo. Endabeni yama-valve amathathu e-offset isihlalo senziwe ngensimbi ukuze sikwazi umshini njengokuthola ukuvala okuqinile kwebhamuza lapho uthintana nediski.

Izinhlobo

Ama-valve evemvane agxilile- lolu hlobo lwe-valve lunesihlalo serabha esiqinile esine-disc yensimbi.
Ama-valve uvemvane angenasici kabili(ama-butterfly valves asebenza kahle kakhulu noma ama-butterfly ama-double-offset) - uhlobo oluhlukile lwezinto ezisetshenziselwa isihlalo kanye nediski.
Ama-valve uvemvane ane-triply-eccentric(ama-valve e-butterfly e-triple-offset) - izihlalo zingama-laminated noma izihlalo eziqinile zensimbi.

Ama-valve e-butterfly yesitayela se-wafer

II-valve ye-butterfly yesitayela se-waferyakhelwe ukugcina uphawu oluphikisana nomehluko wengcindezi e-bi-directional ukuvimbela noma yikuphi ukugeleza emuva kumasistimu aklanyelwe ukugeleza okukodwa. Ifeza lokhu ngophawu oluqinile oluqinile; okungukuthi, i-gasket, i-o-ring, ukunemba ngomshini, kanye nobuso bevalvu eyisicaba emaceleni akhuphuka nomfula kanye naphansi komfula.

I-valve ye-butterfly yesitayela se-Lug

Ama-valve wesitayela se-Lugbabe nokufaka imicu ezinhlangothini zombili zomzimba we-valve. Lokhu kuzivumela ukuthi zifakwe ohlelweni kusetshenziswa amasethi amabili amabhawodi futhi awekho amantongomane. I-valve ifakwe phakathi kwama-flange amabili kusetshenziswa isethi ehlukile yamabhawudi ku-flange ngayinye. Lokhu kusetha kuvumela noma yiluphi uhlangothi lwesistimu yamapayipi ukuthi lunqanyulwe ngaphandle kokuphazamisa olunye uhlangothi.

Ivalvu uvemvane wesitayela se-lug esetshenziswa enkonzweni yokuphela kwento ngokuvamile inesilinganiso sokucindezela esincishisiwe. Isibonelo, ivalve yovemvane yesitayela se-lug efakwe phakathi kwama-flange amabili inesilinganiso sokucindezela esingu-1,000 kPa (150 psi). I-valve efanayo efakwe nge-flange eyodwa, kusevisi yokugcina efile, inesilinganiso esingu-520 kPa (75 psi). Ama-valve ahlanganisiwe amelana ngokwedlulele namakhemikhali nezincibilikisi futhi angakwazi ukumelana nezinga lokushisa elifinyelela ku-200 °C, okulenza libe yisixazululo esisebenza ngezindlela eziningi.

Sebenzisa embonini

Ezimbonini zemithi, amakhemikhali, nezokudla, ivalve uvemvane isetshenziswa ukuphazamisa ukugeleza komkhiqizo (okuqinile, okuwuketshezi, igesi) ngaphakathi kwenqubo. Amavalvu asetshenziswa kulezi zimboni ngokuvamile akhiqizwa ngokweziqondiso ze-cGMP (umkhuba wamanje wokukhiqiza omuhle). Amavalvu ovemvane ngokuvamile ashintsha amavalvu ebhola ezimbonini eziningi, ikakhulukazi i-petroleum, ngenxa yezindleko eziphansi kanye nokufaka kalula, kodwa amapayipi anamavemvane awakwazi 'ukucwiliswa' ukuze ahlanzwe.