Safety valve structure resistant to high temperature

Abstract

The invention provides a high-temperature-resistant safety valve structure which comprises a warhead shell, a through safety hole is formed in the warhead shell and comprises an inner hole and an outer hole which are communicated with each other, the inner hole is communicated with the inner side of the warhead shell, the outer hole is communicated with the outer side of the warhead shell, and the hole diameter of the inner hole is smaller than that of the outer hole; a sealing piece is filled in the inner hole; a pressure relief ring is mounted at the position, close to the outer side, in the outer hole, and the outer hole on the inner side of the pressure relief ring is filled with a pressure relief body; a pressure relief hole is formed in the center of the pressure relief ring, and a protective cover is mounted in the pressure relief hole; an exhaust hole is further formed in the warhead shell, one end of the exhaust hole is communicated with the inner side of the warhead shell, and the other end of the exhaust hole is communicated with the outer hole. By means of the safety valve structure, the thermoplastic explosive can tolerate the continuous high temperature of 72 DEG C during charging, the appearance of a warhead is not damaged, the radial size change and the axial size change are smaller than 1%, and charging is kept stable.

Description

technical field [0001] The invention belongs to the field of warheads and relates to a safety valve, in particular to a safety valve structure that can withstand high temperature. Background technique [0002] Thermoplastic PBX explosive is one of the main charges for high overload penetration warhead because of its excellent resistance to shear overload and impact overload safety. In order to ensure the penetration safety of the warhead, thermoplastic PBX explosives are packed densely in the filling process, without free expansion spaces such as bottom gaps, side gaps, air holes, etc., which will expand in the process of high temperature and increase the internal stress of the charge. Thermoplastic PBX explosives will be plasticized under the action of high temperature, and body expansion will also occur during the plasticization process, which will increase the internal stress of the charge. [0003] As a metastable material, explosives, as the stress increases, the decom...

AI Technical Summary

Problems solved by technology

[0008] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a safety valve structure that can withstand high temperature, so as to solve the problem that the pressure relief structure in the prior art cannot be applied to eliminate the penetration warhead filled with thermoplastic PBX explosives under high temperature conditions. Technical Issues under Security Risks

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