


高压球阀适用于中、小口径管路的各种压力、温度的液化石油专用气、燃气介质下控制接通或截断管路的启闭装置;靠介质压力将球体压紧在出口端阀座上,其使用压力和通径受到一定限制。采用90°传动,故开关方便迅速,可以实行快速启闭。
CNG法兰高压球阀操作原理和结构说明:
1、球阀通道平整光滑便于管道扫线清洗,可以输送浆液及固体颗粒等介质。
2、采用PTFE(特氟隆)等材料作为密封,具有良好润滑性和弹性,与球体摩擦系小,使用寿命长。
3、启闭迅速,启闭时只需把球体转动90°,方便而迅速。
4、球阀的流体阻力小,全开时球体通道、阀体通道和连接管道的截面积相等,并且成直线想通,介质流过阀,相当于流过一段直通的管子,在各类阀门中球阀的流体阻力很小。
5、经配置有手动、蜗轮驱动、气动、电动(防爆)可以实现远程自动控制,能满足用户的各种工况使用要求。
CNG法兰高压球阀优点:
1.流体阻力小,全通径的球阀基本没有流阻。
2.结构简单、体积小、重量轻。
3.紧密稳定。它有两个密封面,而且目前球阀的密封面材料广泛使用各种塑料,密封性好,能实现完全密封。在真空系统中也已广泛使用。
4.操作方便,开闭迅速,从全开到全关只要旋转90°,便于远距离的控制。
5.维修方便,球阀结构简单,密封圈一般都是活动的,拆卸更换都比较方便。
6.在全开或全闭时,球体和阀座的密封面与介质隔离,介质通过时,不会引起阀门密封面的侵蚀。
7.适用范围广,通径从小到几毫米,大到几米,从高真空至高压力都可应用。
8.由于球阀在启闭过程中有擦拭性,所以可用于带悬浮固体颗粒的介质中。
CNG法兰球阀
CNG法兰球阀是专为压缩天然气(CNG) 输送系统设计的一种高性能球阀。其核心特征在于采用法兰端连接,使其能够安全、稳定地控制高压CNG的流动,广泛应用于CNG加气站、输配管线及车载储气系统等领域,是保障CNG设施安全运行的关键设备之一。
CNG法兰球阀主要特点:
高压设计: 采用高强度锻钢阀体,压力等级通常为Class 600、800甚至更高,能完全满足CNG系统的高工作压力要求(通常为20-25MPa)。
防火安全结构: 严格遵循API 607/API 6FA等防火安全标准。在发生意外火灾时,软密封阀座烧损后,特殊的防火结构能形成金属对金属的二次密封,有效阻止介质大量泄漏,防止火灾扩大。
防静电设计: 内置防静电装置,确保球体与阀体之间产生的静电能够被安全导出,避免潜在火花引爆可燃气体,极大提升了安全性。
双重密封保障: 阀杆部位采用多重密封设计(如O形圈、石墨填料、脂注式密封),并结合防吹出结构,确保阀杆处在高压下实现零外泄漏,符合严格的环保和安全标准。
CNG法兰球阀通径与流量: 通常采用全通径设计,使管道流体压力损失小化,确保加气站运行效率。
CNG法兰球阀操作方式灵活: 可配备手柄、齿轮箱、气动或电动执行器,满足手动、半自动或全自动控制的需求。
CNG法兰球阀应用领域:
主要应用于CNG加气站的进口高压管道、储气井/瓶组、顺序控制盘、压缩机出口等关键部位,作为系统的主截断阀或紧急安全阀。
CNG Flanged Ball Valve Product Overview
A CNG Flanged Ball Valve is a high-performance ball valve specifically designed for Compressed Natural Gas (CNG) distribution systems. Its core characteristic is the flanged end connection, enabling it to safely reliably control the flow of high-pressure CNG. It is widely used in CNG fueling stations, distribution pipelines, vehicle storage systems, serving as a critical component for ensuring the safe operation of CNG facilities.
Key Features:
High-Pressure Design: Constructed with a high-strength forged steel body, typically rated for pressure classes such as Class 600, 800, higher. This fully meets the high working pressure requirements of CNG systems (usually 20-25 MPa).
Fire-Safe Construction: Strictly complies with fire-safe standards like API 607/API 6FA. In the event of an accidental fire, the special fire-safe design allows the formation of a secondary metal-to-metal seal after the soft seat is burnt, effectively preventing massive media leakage containing the fire.
Anti-Static Design: An integrated anti-static device ensures that any static electricity generated between the ball the body is safely discharged, preventing potential sparks that could ignite the combustible gas, significantly enhancing safety.
Dual Sealing Assurance: The stem area employs multiple sealing measures (e.g., O-rings, graphite packing, grease injection seal) combined with a blow-out-proof structure. This ensures zero external leakage the stem under high pressure, meeting stringent environmental safety standards.
Bore & Flow: Often features a full-bore design to minimize fluid pressure loss in the pipeline, ensuring optimal efficiency at the fueling station.
Flexible Actuation: Can be equipped with a handle, gearbox, pneumatic, electric actuator to meet the requirements for manual, semi-automatic, fully automatic control.
Applications:
Primarily used in critical sections of CNG stations, such as inlet high-pressure pipelines, storage wells/banks, priority/sequence control panels, compressor outlets, functioning as the main isolation valve emergency safety valve.
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