涡流环

涡流环是氧燃料切割炬中的关键部件，通常位于割炬头部。其主要功能是在氧气或混合气体通过切割嘴之前，赋予其可控的旋转运动（涡流）。这种旋转作用产生更稳定、集中且对称的火焰形状，对于实现清洁、精确和高效的金属切割至关重要。它有助于均匀预热金属，并稳定切割氧流，以提高切割质量并减少熔渣形成。

涡流环基于流体动力学原理工作。它包含精确角度的内部通道或叶片。当高压气体（通常是氧气或燃料-氧气混合物）通过这些通道时，倾斜表面偏转气流，赋予其切向速度分量。这将线性气流转变为螺旋状涡流运动。这种涡流通过沿中心轴产生低压区来稳定火焰，有助于集中和聚焦火焰射流，从而实现更一致的热分布和更清洁的切割。

The swirl ring operates on the principle of fluid dynamics. It contains precisely angled internal channels or vanes. As high-pressure gas (typically oxygen or a fuel-oxygen mix) passes through these channels, the angled surfaces deflect the flow, imparting a tangential velocity component. This transforms the linear gas flow into a helical, swirling motion. This vortex stabilizes the flame by creating a low-pressure zone along the central axis, which helps center and focus the flame jet, leading to more consistent heat distribution and cleaner cuts.