The invention belongs to the field of aviation, and especially relates to a lightning protection type oil drainage structure of an airplane oil tank. The structure comprises a stainless steel rotary joint, a polytetrafluoroethylene insulating cover and a plug. An adapter is arranged in the middle of the polytetrafluoroethylene insulating cover; the plug is positioned below the polytetrafluoroethylene insulating cover; and a composite structure formed by the stainless steel rotary joint, the polytetrafluoroethylene insulating cover and the plug and an oil tank area opening cover are formed through sealing and riveting of a countersunk head sealing rivet, the head of the countersunk head sealing rivet is covered and sealed through a sealant, one end of the composite structure is connected with an oil drainage base through a lining, and a sealing structure is arranged at the other end of the composite structure. A lightning protection composite plug formed by inlaying the stainless steelrotary joint, the polytetrafluoroethylene insulating cover and the plug together has a protection capability of a lightning direct effect, and meets an airworthiness requirement of an airplane for lightning protection.
本申请属于航空领域,具体而言是一种飞机油箱的防雷击式放油结构,其包括不锈钢旋转接头、聚四氟乙烯绝缘盖和堵塞,所述聚四氟乙烯绝缘盖的中部设置有转接头,所述堵塞位于所述聚四氟乙烯绝缘盖的下方,所述不锈钢旋转接头、聚四氟乙烯绝缘盖和堵塞形成的复合式结构与油箱区口盖通过沉头密封铆钉密封铆接成型,所述沉头密封铆钉的头部采用密封胶进行罩封,所述复合式结构的一端通过衬套与放油底座连接,另一端开设有密封结构。本申请采用不锈钢旋转接头、聚四氟乙烯绝缘盖和堵塞镶嵌在一起而组成的防雷击复合式堵塞,具备雷电直接效应的防护能力,满足飞机关于雷电防护的适航性要求。
Lightning protection type oil drainage structure of airplane oil tank
一种飞机油箱的防雷击式放油结构
2020-10-27
Patent
Electronic Resource
Chinese
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