尽管气动系统的压力比液压系统低得多,但ISO和OSHA标准对防止鞭打危险的需求坚定,以防压缩空气软管断裂因其耦合而损失。这些软管必须受到限制或屏蔽工人和机器,或使用机构设计,以便在发生断裂时自动关闭。
一种保护的常见方法hose whipin most fluid power systems is to use some sort of hose restraint system, which prevents a hose from whipping around after breaking loose from its fittings. These devices can be as simple as a clamp and cable, which secure the hose to the machine. However, another option is available to protect against pneumatic hose whip if a compressed air hose or pipe should break.
如果由于管道或软管破裂而导致的空气量超过固定值,则AirFuse保护,例如来自Preatival的软管或来自Parker Hannifin的Airguard,立即关闭空气供应。这些设备通过减小软管破裂或不小心从其耦合中松动时,可以通过减小压力来保护人员和植物机械免受气动软管鞭子的影响。这消除了气动软管鞭子的危险发生。
The system features a factory preset value to allow normal air consumption when using air tools. If the air consumption exceeds this preset value, an internal piston instantly shuts off the main flow. Then, an integral bleed hole allows some air to flow through. This enables the line pressure to automatically reset the airfuse device once the main break is repaired.
这些设备的功能很简单。压缩空气穿过Airfuse的入口,并通过活塞时,它被活塞外侧的纵向凹槽减速。如果流动太高,空气将无法通过活塞,因此活塞被迫靠在弹簧和座椅上。一个流血孔可在修复软管后将AirFuse设备重置并打开。
选择AirFuse设备时,您必须知道软管,管道或管的内径及其长度。选择材料时,还需要应用数据,因为它们可在铝,不锈钢,硝酸橡胶和塑料等中使用。
这些设备的关键好处是,它们允许人员在工厂仍在运行时安全地维护和修复软管系统。
Air Inc.
exportialial.com
帕克·汉尼芬公司
Parker.com
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