A system and method for simulating and testing the expansion pressure of projectile explosive charge

A technology of expansion pressure and pressure test, which is applied in the measurement of blasting force and the measurement of force by measuring the change of optical properties of materials when they are stressed, can solve the problem that the expansion characteristics of explosive charges and semi-solid state explosives cannot be satisfied. problems such as accurate measurement, to achieve the effect of a large measurement range

CN107631822BActive Publication Date: 2019-09-27XIAN MODERN CHEM RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-09-27

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Abstract

The invention discloses a thermal expansion pressure simulation test system and method for simulating warhead projectile explosive charge. The system comprises a charge simulation chamber, an expansion pressure sensor assembly, a sealing compaction nut, an explosive member, a constant temperature system, a temperature compensating fiber grating, a fiber demodulation system and a measurement control system. Projectile body explosive charge and semisolid state explosive thermal expansion pressure can be directly measured. An explosive test piece is arranged in a simulation chamber cylinder, theexplosive test piece is compacted by the expansion pressure sensor assembly, sealing compaction is exerted onto the expansion pressure sensor assembly, the simulation chamber cylinder is further sealed to form a simulation test projectile, the simulation test projectile is disposed in the constant temperature system, and projectile explosive charge thermal expansion pressure change is measured. The system is advantaged in that operation is simple, the measurement scope is large, measurement accuracy is high, good safety is realized, and a technical problem of direct measurement of projectile body explosive charge and semisolid state explosive thermal expansion pressure is solved.
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Description

technical field

[0001] The invention belongs to the field of propellant and explosive performance testing, and mainly relates to an explosive charge expansion pressure measurement system, in particular to a thermal expansion pressure test system suitable for simulating warhead projectile explosive charge and based on optical fiber sensing technology. Background technique

[0002] Explosives are high-energy substances used by ammunition warheads to achieve target damage. Generally, explosives are loaded in the body of the warhead according to a specific process to form an explosive charge. Expansion pressure of projectile explosive charge refers to the static pressure generated by the explosive charge on the constrained projectile under the condition that the expansion of the explosive charge is restrained. Usually, the body of the warhead is a steel cylinder with a charging port. When high-energy explosives are loaded into the body chamber from the charging port by pressing...

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0025] as figure 1 As shown, the projectile explosive charge expansion pressure simulation test system provided by the present invention includes a charge simulation chamber 2, an expansion pressure sensor assembly, a sealing compression nut 5, an explosive charge test piece 3, a constant temperature system 1, a temperature compensation Fiber grating 16, fiber demodulation system 14, measurement control system 15, etc. The combination of the explosive simulation chamber 2, the expansion pressure sensor assembly, the sealing compression nut 5, and the explosive charge test piece 3 constitutes a scaled simulation projectile. is 30mm. The charging simulation chamber 2 is in the shape of a barrel, which is made of stainless steel. The inner wall of the barrel is smooth and flat, with an inner diameter of about 31mm and an outer diamete...