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气动氟衬里球阀

球阀是工业管道系统中广泛使用的切割和控制装置，它使用球作为开口和关闭元件，以实现流体流量控制或通过90°旋转进行调整。它的核心结构包括一个带有整个孔的球，阀座，阀体和驾驶装置。当球孔与管道对齐时，它会完全打开，当旋转后的孔与管道未对准时，它会关闭。它易于操作和快速打开和关闭。 ​
核心类型和特征
浮球类型：球漂浮，阀座是固定的，将球压在阀座上，介质的压力以实现密封。它适用于低压小直径方案（DN≤200）。 ​
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固定球类型：球固定在阀茎上，阀座浮子浮动。球由中型压力或弹簧力紧紧按下，该压力具有更好的密封性能，适用于高压大直径工作条件（DN≥300）。 ​
轨道球阀：球沿特定轨道旋转以减少摩擦和磨损，延长使用寿命，并且适用于含有颗粒的介质。 ​
性能优势
可靠的密封：金属阀座椅或非金属阀座椅，例如聚氟乙烯（PTFE）可以实现零泄漏，并且某些型号符合API 6D类VI标准。 ​
极低的流动性：孔结构与管道的内径相似，流体电阻较低，适用于高流速情景（例如天然气运输）。 ​
方便的维护：模块化设计允许在线更换阀座和密封件，从而减少了停机时间。 ​
对工作条件的强大适应性：温度范围较大（-200〜+650℃），它可以适应各种培养基，例如酸和碱，石油和气体，泥浆，等等。
典型的应用
石油和天然气：长距离管道，井口控制的紧急切口； ​
化学工业：反应堆中型开关，腐蚀性液体调节； ​
供水和排水系统：水处理厂管道控制，建筑防火系统； ​
在权力领域：核电厂中冷却液电路和蒸汽系统的流动调节。 ​
球阀具有简单的结构，可靠的密封和方便的操作，已成为工业自动化控制中必不可少的流体控制组件，尤其是在需要快速开放和关闭或严格密封的情况下。
June 17, 2025
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