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Viscous-state explosive detonation velocity testing method

A test method and detonation velocity technology, applied in the field of performance testing and evaluation of propellants and explosives, can solve the problems of prolonging the time of sparse waves, increasing the propagation paths of discrete compression waves and stress waves, etc., and achieve the advantages of simple and convenient assembly, elimination of interference, and improvement of accuracy Effect

Pending Publication Date: 2021-03-16
XIAN MODERN CHEM RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the influence of the external restraint shell on the detonation velocity test results in the process of measuring the detonation velocity of viscous fluid explosives by the existing probe electrical measurement method, this application provides a method for testing the detonation velocity of viscous fluid explosives. This method is based on the principle of detonation wave propagation. Reduce the reflection of the stress wave on the wall of the confined shell, increase the propagation path of the discrete compression wave and the stress wave, change the reflection direction, prolong the time for the sparse wave to reach the detonation wave axis, and realize the elimination of the impact of the confined shell on the detonation velocity test results Purpose

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  • Viscous-state explosive detonation velocity testing method

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Embodiment 1

[0034] refer to figure 1 , figure 2 , the present embodiment provides a kind of application example of viscous fluid state explosive detonation velocity test method, promptly applies this application viscous fluid state explosive detonation velocity test method and traditional liquid explosive detonation velocity electrical measurement method to measure liquid explosive nitromethane (density is 1.14g / cm 3 , characteristic detonation velocity D NM The detonation velocity is 6360m / s), and then the test results are compared and analyzed. Among them, the sample assembly tube constraint material used in the traditional liquid explosive detonation velocity electrical measurement method is a glass tube with a wall thickness of 2mm.

[0035] The detonator used in this application’s viscous explosive detonation velocity testing system is industrial No. 8 electric detonator, and the booster is JH-14 powder column with a diameter of 20mm, a height of 20mm, and a density of 1.73g / cm ...

Embodiment 2

[0056] refer to figure 1 , figure 2 , the present embodiment is to apply the detonation velocity test method of viscous explosives of the present application to carry out 3 times of PBXN-109 viscous explosive detonation velocity measurement tests in different time periods, each test is tested 2 rounds altogether, wherein: the detonator adopts in the test system Industrial No. 8 electric detonator, the booster uses JH-14 powder column, with a diameter of 20mm, a height of 20mm, and a density of 1.73g / cm 3 , with a diameter Φ7.5mm×8mm detonator hole in the center. The sample assembly seat is a cuboid with a detonation slot and a sample slot on the top, made of plexiglass, with a length of 120mm, a width of 96mm, and a height of 60mm. The detonation groove is a semicircular groove with a diameter of Φ20mm and a length of 20mm. The central axis is located on the centerline of the upper surface of the assembly seat. The sample groove is a semi-conical groove with a length of 92...

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Abstract

The invention discloses a viscous-state explosive detonation velocity testing method, and solves the problem of the influence of a constraint shell on a viscous-state explosive detonation velocity measurement result. In the method, according to a detonation wave propagation principle, reflection of stress waves on the wall surface of a constraint shell is reduced, discrete compression wave and stress wave propagation paths are increased, the reflection direction is changed, and the time for sparse waves to reach the axial direction of detonation waves is prolonged, so that a sample assembly seat capable of eliminating the influence of the constraint shell on the detonation velocity test result is designed. And then a test system composed of a detonator, booster explosive, an ionization probe, a signal transmission line and a detonation velocity tester is used for measuring the detonation velocity of the viscous-state explosive, so that accurate measurement of the detonation velocity ofthe viscous-state explosive is realized, and a technical support is provided for detonation performance evaluation of the explosive.

Description

technical field [0001] The application belongs to the technical field of propellant performance testing and evaluation, and relates to a method for testing the detonation velocity of viscous explosives, in particular to a method for testing the detonation velocity of liquid explosives and viscous explosives. Background technique [0002] Cast PBX explosive is a high-energy insensitive explosive with wide application prospects. During the molding process of this type of explosive, the explosive gradually solidifies from a viscous fluid state to form an explosive with certain strength and elasticity. The existing GJB772A-97 method 702.1 specifies the general electrical method for testing the detonation velocity of explosives, which can be used to test the detonation velocity of solid grains and liquid explosives. When the solid charge test device is used to measure the detonation velocity of the viscous fluid state explosive, the test data error is relatively large due to the ...

Claims

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Application Information

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IPC IPC(8): G01P3/64F42B35/00
CPCG01P3/64F42B35/00Y02E30/30
Inventor 冯晓军潘文李瑞雄裴明敬薛乐星
Owner XIAN MODERN CHEM RES INST