平板閘閥的產品結構特點Productsdesignfeatures ●閥體有鑄造和焊接兩種結構。 Castandweldtwostructureswiththebody ●閥座采用O形密封圈密封和施加預緊力的浮動閥座結構,使閥門進出口雙向密封;并且該結構的啟閉力矩僅為普通閥門的1/2,能達到輕松開、關閥門。 Thesealringusesthefloatingseatringstructurewitho-searringsealedandpre-tighteningforceappliedtohaveinletandoutletdual-waysealed;andtheopen-closemomentwiththisstructureis1/2thatofthecommonvalvesonly,abletolightlyopenandclosevalves. ●閥座采用密封面上鑲嵌PTFE,具有PTFE對金屬和金屬對金屬的雙重密封,PTFE密封面同時清除閘板臟物的作用, TheseatringusesthesealingfaceinlaidwithPTFE,sohasdualsealsofPTFEtometalandmetaltometal,thePTFEsealingfacealsoactsasremovingthedirtonthewedgedisc. ●金屬對金屬密封的閥門,閥體外部設有注油脂結構,油脂通過注脂器、閥座進入閥門密封面,使閥門達到零泄漏。 Forthevalvewiththemetaltometalseal,thereisgreaseinjectoroutsideofit,greasegetsintothesealingfacethroughtheinjectorandtheseatringtohavethevalveuptonullleak. ●帶導流孔閥門的閘板,無論是全開或是全關始終與密封面吻合,密封面得到保護不受介質直接沖刷,從而延長使用壽命。 Thewedgediscofthevalvewithflowguideholeisalwaysfittedwiththesealingfacewhetherinfullopenorfullclosestatustohavethesealingfaceprotectedwithoutbeingdirectlyerodedbythemediumsoastoextendtheduration. ●閥門在全開時,通道平滑為直線,流阻系數極小,無壓力損失,可通毛球清掃管線。 Whenfullyopened,thevalveschannelissmoothandlinear,withanextremelysmallflowresistingcoefficientandnopressureloss,andthepipelinecanbecleanedwithhair-ballthroughit. ●本閥采用帶自密封能力的填料結構,無需經常調節,開、關極為輕便,且密封性可靠,填料函處設有輔助密封油脂注入結構,密封性能絕對可靠,真正達到零泄漏;解決了通用閥門填料處最容易外漏的蔽病。 Thisvalveusesthepackingstructurewiththeabilityofself-seal,needsnoconstantadjustment,featuresverylightopenandcloseandareliablesealAnassistingsealinggreaseinjectionstructureissetinthepackingtohavethesealingperformanceabsolutelyreliableandgetatruenullleak,settlingtheproblemforthepackingplaceofuniversalvalvestobeeasiestleakoutward. ●閥門關閉時能自動卸掉內腔高壓(詳見工作原理圖),保證使用安全。 Automaticremovalofthehighpressureintheinternalcavitywhenthevalveisabouttoclose(seetheworkingprinciplediagram)forthedetails)soastoensuresafety. ●全封閉結構,防護性能好,可適應全天候要求。 Fullysealedstructureleavesagoodprotectiveproperty,suitalbefortherequirementof24-hourduty. ●升降桿閥門設有指示桿或觀察窗以表示閥門的啟閉情況,旋轉桿閥門采用封閉齒輪轉動啟閉指示機構。 AnindicationrodorviewingwindowissetAscendanddescendstemwiththevalvetowhowtheopen-closecondition,RevolvestemwiththevalveUseasealedgear-drivingopen-closeindicatingmechansim. ●直理式閥門外表面采用環氧煤瀝青防腐處理,能與管線同壽命。 Theexternalsurfaceofthedirectlybuilt-invalveiscorrosionresistingtreatedwithepoxycoalbitumenandcanbethesamedurationasthepipeline.
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