Pipeline separation device for liquid-propellant rocket

A pipeline separation device for liquid-propellant rocket, comprising a first flange pipeline, a second flange pipeline, a clamping unit, a push-and-pull unit and an actuation unit;

• wherein the first flange pipeline and the second flange pipeline dock with each other via a docking end surface, the clamping unit is used for limiting the first flange pipeline and the second flange pipeline at the docking end surface, and end surfaces opposite to each other after docking of the first flange pipeline and the second flange pipeline are respectively used for connecting with different medium pipelines;
• the push-and-pull unit comprises an actuation segment, a pushing segment and a limiting segment in sequence, the actuation segment being used for cooperating with movement of the actuation unit, and the limiting segment being used for limiting the clamping unit;
• the actuation unit comprises an actuation cylinder, the actuation segment being provided inside of a cavity of the actuation cylinder via a piston, and the actuation cylinder being provided with a cavity for accessing or generating air flow on an opposite side of the piston;
• and
• when the cavity of the actuation cylinder, which is located on the opposite side of the piston, accesses or generates air flow, the piston and the actuation segment are pushed to move, so that the limiting segment relieves limit on the clamping unit and the pushing segment pushes the clamping unit to break away from the docking end surface.