v型球閥流量特性/系數(shù)/曲線

V 型球閥是球閥的一種，它的關(guān)閉件是半球體上開有V字型開口. V 型開口具有鋒利的刃口，在球體回轉(zhuǎn)過(guò)程中，關(guān)閉件之間有擦拭作用，對(duì)介質(zhì)具有強(qiáng)有力的切斷力，球體的V型開口與閥座流道形成一個(gè)扇形區(qū)域，在回轉(zhuǎn)過(guò)程中可改變流道裁面積，形成對(duì)介質(zhì)的精確調(diào)節(jié)，它是一種角回轉(zhuǎn)的調(diào)節(jié)閥， 其密封性能與普通球閥相同，使它同時(shí)具備調(diào)節(jié)和開關(guān)兩種功能，與氣動(dòng)或電動(dòng)執(zhí)行器配套，廣泛使用于工業(yè)過(guò)程自控系統(tǒng)中。

The segment ball valve is a kind of ball valve with a hemisphere of V-shaped opening as closing part.V-shaped opening has a sharp edge provides a wiping between the closing parts while rotating,andit has a sharpcutoffto the medium.V-shaped opening portand the valve seatformafan-shaped areato change the port cross area,creating a precision adjustment of medium during rotary.It is a kind of adjusting valve with angle rotation, with the same seal performance as common  ball valve,which  makes  it  have a combination of regulation and on-off functions,equipped with  pneumatic or electric actuators,being widely used in industrial process auto-controlsystem.

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