为了实现这一潜力,氢燃料汽车和燃料基础设施必须设计和建造高质量的材料,以提供多年甚至几十年的防漏性能。 而不仅仅是任何组成部分就足够了 氢燃料的生产和处理提出了一系列挑战,需要一套独特的性能标准,从整个氢燃料系统的组成部分。

为什么氢气阀的高性能很重要
氢燃料系统的运行条件本身就具有挑战性。 在指定氢气阀时,必须考虑以下几点:

压力。 为了达到预期的密度,H2必须储存在350-700巴的车载油箱中。

应力和振动。 系统必须能够承受高速、颠簸的道路和恶劣的天气条件。

安全。加油站必须由普通消费者安全操作。

维持费。 在维修过程中,能够轻松地重做防漏接头。

所有的氢气阀在性能上都应该满足这些要求。 它们必须在连接点以及它们的关闭点或调节点处具有泄漏性,并且必须能够承受氢气应用的固有操作条件。

氢气球阀

球阀是氢气系统中的一个常见部件,用于启动和停止氢气从一个方向流向另一个方向。 当寻找用于氢气应用的球阀时,寻找高度耐磨损的阀杆密封设计。 采用直接负载设计的耳轴式滚珠是实现每次启动和关闭时防漏性能的好选择。 底部加载阀杆设计还可以减少阀杆喷出,提供更大的安全。

如有疑问, 你的阀门供应商应能通知你. 根据您的要求,适用的球阀可能有2-或3通功能,各种安装选项,以及各种流量系数。

氢气针阀

针阀用于对流体流量进行比较细致的调节。 在指定氢气应用时,必须考虑一些重要因素。 针阀通常由所有金属制成,需要很大的力才能密封好。 这种力有可能使针头变形,也可能使阀座变形,造成危险并需要昂贵的维修。 此外,所需的力通常需要使用大型空气执行器来打开和关闭阀门,这可能需要两分钟才能完全启动。

考虑到这些因素,寻找反复使用时能够承受变形的高品质316不锈钢制成的针阀是非常重要的。

氢气止回阀

止回阀在氢压缩机中起着关键的安全作用,在加油系统、控制过剩回流和保护最终用户。 与一般用途相比,氢气止回阀面临一些挑战。

大多数止回阀使用弹簧,通常由应变硬化材料制成,比高质量的316不锈钢更容易氢脆。 此外,车辆加油应用使这类阀门受到巨大、快速的温度和压力变化的影响,给阀门的弹性体密封带来过大的应力。 考虑到这些因素,球式止回阀是氢压缩机更好的选择。 在这种情况下,材料的完整性和与其他氢成分的兼容性也很关键。

氢燃料市场的长期生存能力取决于车辆和基础设施的安全、可靠性和耐久性。 为所有氢系统选择和指定合适的组件,可以帮助这项技术在长期内充分发挥潜力。
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