Sealing device for converting creeping defect of sealing material into permeation advantage

Abstract

The invention discloses a sealing device for converting a creeping defect of a sealing material into a permeation advantage. The sealing device is characterized in that a second circular ring body ofa sealing ring (2) is placed in a first annular groove of a sealing interface (1), a second outer cylindrical surface of the sealing ring (2) is contacted with a first inner cylindrical surface of thesealing interface (1), and a second inner cylindrical surface of the sealing ring (2) is contacted with a first outer cylindrical surface of the sealing interface (1). According to the sealing device, creeping space is reserved for the polytetrafluoroethylene sealing ring, the polytetrafluoroethylene sealing ring creeps into the narrow groove under the action of pressure, the width of the narrowgroove becomes smaller as going to the deeper position, and finally, a polytetrafluoroethylene material permeates into a slit under the action of pressure and fills the slit; high-energy liquid-phasefuel is blocked inside and cannot leak; and an external tension spring applies continuous extrusion force to the polytetrafluoroethylene sealing ring, so that the long-term sealing effect is ensured,and the reliability of the warhead is ensured.

Description

technical field [0001] The invention belongs to the technical field of sealing devices, relates to a osmotic sealing device, in particular to a sealing device which converts the defect of creeping of sealing materials into the advantage of osmosis. Background technique [0002] The interior of the body detonation warhead is filled with high-energy fuel, driven by the explosion and throwing of explosives, the high-energy fuel is thrown into the air, the high-energy fuel is atomized and mixed with the air to form a large-scale active cloud, and then detonated by the explosive twice, the active The cloud group produces body detonation and releases a strong shock wave. The power of the shock wave exceeds the explosion power of multiple times the mass of TNT. It is one of the most powerful non-nuclear weapons. The high-energy fuel filled inside the body detonation warhead contains liquid phase materials. Therefore, all parts of the body detonation warhead that are in contact with...

AI Technical Summary

Problems solved by technology

However, the inherent defect of PTFE sealing material itself is its poor creep resistance. The PTFE sealing material creeps and deforms under pressure, and the PTFE material after creep deformation becomes loose and no longer has resilience. , can not be well squeezed and fitted with the metal shell, and the sealing effect will be lost

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