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    • 2. 发明授权
    • Frangible seal for fluid dispensing device
    • 用于流体分配装置的可变密封件
    • US3880325A
    • 1975-04-29
    • US57449066
    • 1966-08-16
    • THIOKOL CHEMICAL CORP
    • RABE GEORGE B
    • B65D88/60F23N1/00F23R1/02
    • B65D88/60
    • The disclosure is directed to a tank for storing a liquid, such as a propellant for a rocket engine, having a piston with a dynamic seal for slidably engaging the wall of the tank as the piston moves and an hermetic seal inside the dynamic seal to prevent contact of the liquid with the dynamic seal during storage, said hermetic seal is broken by pressure applied to the piston, after which the dynamic seal slides along the wall. In one form the seals are applied at the interior of the piston and around an interior wall of an annular tank and in another form the seals are applied at the exterior of the piston to engage the peripheral wall of a cylindrical tank.
    • 本公开涉及一种用于存储液体的罐,例如用于火箭发动机的推进剂,其具有活塞,该活塞具有动态密封件,用于当活塞移动时可滑动地接合罐的壁,并且在动态密封件内部防止气密密封,以防止 在储存期间液体与动态密封的接触,所述气密密封被施加到活塞上的压力破坏,之后动态密封件沿着壁滑动。 在一种形式中,密封件被施加在活塞的内部并且围绕环形罐的内壁,并且在另一形式中,密封件被施加在活塞的外部以与圆柱形罐的周壁接合。