Differential pressure type blocking structure adopting laser forming and processing method

A differential pressure type blocking structure adopting laser forming comprises a diaphragm (2), an upper check ring (3) and a lower check ring (1). The upper check ring (3) and the lower check ring (1) are both of an annular structure and jointly press the edge of the diaphragm (2). The diaphragm (2) is of an inverted arch structure, and a cross-shaped weakening groove is machined in the inner side of the arch through laser etching. Sealing grooves are formed in the connecting faces of the upper check ring (3) and the lower check ring (1) and the pipeline, and sealing structures are installed. The method has the characteristics of high machining precision, measurable product size, high opening pressure precision and the like, can be applied to pipelines of rocket power systems, and has the characteristics of high yield, good product consistency and the like. 一种采用激光成型的压差式阻隔结构，包含：膜片(2)、上挡圈(3)、下挡圈(1)；上挡圈(3)和下档圈(1)均为环形结构，共同压住膜片(2)的边缘；膜片(2)为反拱型结构，在拱内侧采用激光刻蚀加工十字型减弱槽；上挡圈(3)和下挡圈(1)与管路连接面设置密封槽，安装密封结构。本发明具有加工精度高、产品尺寸