Constant-temperature melting pressure release slow-release system of missile warhead

Abstract

The invention discloses a constant-temperature melting pressure release slow-release system of a missile warhead. The system is composed of a shell, a front end cover, pressure releasing modules, a filling object and a rear end cover; and four pressure releasing modules are installed on the front end cover and the rear end cover respectively, and the front end cover and the rear end cover are coaxially assembled at the two ends of the shell through threads. According to the system, when the missiles suffer from accidental thermal stimulation caused by slow baking, in the process that the temperature of the missile warhead is increased, the fusible metal inlaid in the pressure releasing modules which are installed on the front end cover and the rear end cover are gradually softened, finallya pressure releasing channel is formed after melting; when the explosive does not reach a temperature threshold value of local ignition, the effectively discharging of the melted liquid explosive andthe gas released by explosive thermal decomposition can be guaranteed; and the increase of the pressure in the bullet body is inhibited, so that the reaction rate of the explosive is not increased sharply, the slow baking response grade of the warhead is reduced, and the slow baking safety of the ammunition is improved.

Description

technical field [0001] The invention belongs to the technical field of warhead safety, and relates to a pressure relief device for a warhead under thermal stimulation, in particular to a safety pressure relief and slow-release system for a missile warhead under slow cook-off stimulation. Background technique [0002] Ammunition faces all kinds of unexpected threats during the whole life cycle of manufacturing, storage, transportation and service. The painful lessons of many self-explosion accidents before and after World War II have prompted Western countries led by the United States to take the lead in putting forward insensitive ideas. Initiated the development of policy and assessment criteria and defined insensitive munitions as munitions that reliably meet stated performance, readiness and operational technical requirements subject to accidental stimuli (slow cook-off, fast cook-off, bullet impact, fragment impact , shaped charge jet impact, hot fragments and martyrdom ...

AI Technical Summary

Problems solved by technology

[0003] In the Chinese invention patent "Missile Warhead Safety Pressure Relief Protection Structure" with the authorization number ZL201418005074.5, a missile warhead safety pressure relief protection structure is disclosed, such as figure 1 As shown, it mainly includes protective plugs, reactive materials and heat insulation devices; the principle is that the warhead is in a high-temperature environment, and when the temperature reaches the reaction threshold of the reactive materials, the reactive materials begin to react violently and emit a large amount of heat in an instant. The composite material protection plug is softened and falls off from the front end cover of the warhead, the airtight environment where the main charge of the warhead is released, and the safety of the warhead is improved, but the main problems are: (1) the protective structure is formed by The front end cover of the warhead has a hole, and a protective structure with reactive materials is embedded. The strength of the composite protective plug is not high, which weakens the structural strength of the warhead. In addition, the protective structure is embedded in the main charge, occupying the main charge The volume of the warhead destroys the charge structure of the warhead, which in turn affects the damage performance of the warhead

(2) The protection structure is that when the ambient temperature rises to the reaction threshold of the reaction material, the reaction material reacts violently and releases a large amount of heat, which makes the composite material protection plug soften and fall off. However, since the reaction material is also an energetic substance , and in close contact with the main charge, the heat released when the reactive substance reacts is transferred to the protective plug, and at the same time more heat is introduced into the main charge, which increases the risk of violent reactions of the main charge that has been stimulated by heat sex

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