The invention relates to the technical field of aviation fuel systems, in particular to a multi-direction emergency disconnection self-sealing device and an assembly and inspection method. The device is formed by coaxial butt joint of an easy-to-break end assembly and a fixed end assembly. The easy-to-break end assembly comprises an easy-to-break end pipe joint, an easy-to-break end shell, an easy-to-break end valve seat assembly and a valve; the easy-to-break end pipe joint is fixed to the end of the easy-to-break end shell, the easy-to-break end valve seat assembly is arranged in the easy-to-break end shell and can slide in the axial direction, a valve is installed on one side of the easy-to-break end valve seat assembly through a torsional spring, and the free end of the valve is in lap joint with a boss on the end face of the easy-to-break end shell. The fixed end assembly comprises a fixed end pipe joint, a fixed end valve seat, a baffle ring, a fixed end shell and a fixed end valve; the design form of the fixed end assembly is equivalent to that of the fragile end; a spring is also arranged between the pipe joint at the easy-to-break end and the valve seat, and a spring is also arranged between the baffle ring and the valve seat at the fixed end; and under the action of the two springs, the end surfaces of the two valve seats are extruded, contacted and matched.
本发明涉及航空燃油系统技术领域,具体设计一种多方向应急断开自封装置及装配、检验方法;由易断端组件与固定端组件同轴对接而成;易断端组件包括易断端管接头、易断端壳体、易断端活门座组件、活门;易断端管接头固定于易断端壳体端部,易断端活门座组件设置于易断端壳体内,可沿轴向滑动,易断端活门座组件一侧通过扭簧安装活门,活门的自由端搭接于易断端壳体端面凸台上;固定端组件包括固定端管接头、固定端活门座、挡环、固定端壳体、固定端活门;固定端组件的设计形式与易断端相当;易断端管接头与活门座之间还设置有弹簧,在挡环与固定端活门座之间也同样设置有弹簧;在两个弹簧作用下,两个活门座端面挤压接触配合。
Multi-direction emergency disconnection self-sealing device and assembly and inspection method
一种多方向应急断开自封装置及装配、检验方法
2024-02-23
Patent
Electronic Resource
Chinese
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen |
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