Axial-flow type two-stage safety pressure reducing device

The invention provides an axial-flow type two-stage safety pressure reducing device, and belongs to the technical field of pressure reducing devices. The pressure reducing valve comprises a first-stage pressure reducing valve and a second-stage pressure reducing valve which are communicated in an axial flow mode. The first-stage pressure reducing valve and the second-stage pressure reducing valve which are both designed in an axial flow mode are used in a communicated mode, media always flow along the axis in the pressure reducing device, indirect flowing and unnecessary flowing directions of the media are avoided, the media flow direction is stable, the flow speed is uniform, the pressure reducing effect is stable and good, universality is good, and reliability is high. 本发明提供了一种轴流式双级安全减压装置，属于减压装置技术领域。本发明包括呈轴流式连通的一级减压阀和二级减压阀；通过均采用轴流式设计的一级减压阀和二级减压阀连通使用，介质在减压装置内部始终沿轴线流动，避免了介质的间接流动和不必要的流动方向，介质流向稳定、流速均匀，减压效果稳定、良好，通用性好，可靠性高。