HyCon Anti-Cavitation TrimHyCon Anti-Cavitation Trim1996-01-01 / TMi1996-01-01 / TMiControl Valve DivisionControl Valve DivisionABB K.KABB K.KMain MenuCavitation PhenomenonCavitation PhenomenonInlet PressureInlet PressureOutlet Pressure Outlet Pressure CavitationCavitationVapor PressureVena ContractorFlowFlowFlowCavitation PhenomenonCavitation Phenomenonon the valve plugon the valve plugGenerate of BubbleGenerate of BubbleCavitation PhenomenonCavitation Phenomenonon the valve plugon the valve plugGenerate of BubbleGenerate of BubbleRapid DamageRapid Damageon the seat surfaceon the seat surfaceBubble attachedBubble attachedon metal surfaceon metal surfaceCrash of BubbleEnergy of CavitationEnergy of Cavitationabout 6000-7000 Kg/cm2Damage=K V6-8P2Vena ContractorVena ContractorVapor Press.Vapor Press.P P1 1P Pr re es ss su ur re eAnti-Cavitation DesignAnti-Cavitation DesignHyConConventionalValve TrimAll HyCon TrimHybrid HyCon TrimSoft Seat HyCon TrimWide range selection of HyCon Trim煤矿水灾害的成因分析：煤矿水灾害的成因分析：1、一些煤矿，特别是乡镇小煤矿，在开采设计过、一些煤矿，特别是乡镇小煤矿，在开采设计过程中，对于防治水灾害的措施不合理，没有设计程中，对于防治水灾害的措施不合理，没有设计探放水措施，没有设计防水煤柱等。探放水措施，没有设计防水煤柱等。2、对煤矿的水文地质分析不够，特别是探放水不、对煤矿的水文地质分析不够，特别是探放水不够，在开采中盲目掘进，造成突水事故。够，在开采中盲目掘进，造成突水事故。3、在开采过程中，矿工违章违规操作，造成水灾、在开采过程中，矿工违章违规操作，造成水灾事故。事故。4、煤矿没有制定相应的安全规程，装备不齐、煤矿没有制定相应的安全规程，装备不齐全，不到位，导致水灾害发生。全，不到位，导致水灾害发生。5、煤矿供电和排水系统运行可靠性能出现故、煤矿供电和排水系统运行可靠性能出现故障，造成煤矿水灾害事故。障，造成煤矿水灾害事故。6、地震，山洪暴发等自然灾害引发了煤矿水、地震，山洪暴发等自然灾害引发了煤矿水灾还事故等。灾还事故等。Seating Surface of Metal Seat type Valve 32 deg.30 deg.PlugPlugSeat Leakage Class of Metal Seat TrimMin. Class V.5x10-12 m3/sec/mm/barEx. D.P=300bar, Seat Dia.=100mm allowable leakage is 9cc/minMetalMetalParticleParticleSeatSeat Soft Seat HyCon TrimSoft Seat HyCon TrimPlugSoft SeatMetal SeatHyConHyConCageCageCloseCloseP1ANSI B16.104 Leakage Class VI Soft Seat HyCon TrimSoft Seat HyCon TrimPlugSoft SeatMetal SeatCloseCloseP1ANSI B16.104 Leakage Class VIHyConHyConCageCage Soft Seat HyCon TrimSoft Seat HyCon TrimPlugSoft SeatMetal SeatOpenOpenP1P1HyConHyConCageCage Wire Drawing on Plug SurfaceProtection ofValve BodyBodyFinal Velocity=Vo x tan 20 x L1tan 20 x L22HyCon TrimFlow to OpenFlow to CloseVibration OccurVibration OccurBath Tub Stopper EffectBath Tub Stopper EffectCentering Performance of Cage GuideUniformTightnessSeatSeatClearanceUnbalancedTightnessSeatSeatCentering and Seating PerformanceCentering and Seating PerformancePlugPlugPlugPlugOverlap of HyConfor HyCon Anti-Cavitation Trim Main Menu