Explosive body expansion coefficient testing device

A technology of volume expansion coefficient and testing device, which is applied in the direction of material thermal expansion coefficient, can solve problems such as lack, achieve the effects of eliminating measurement errors, simple installation and operation, and improving test efficiency

Active Publication Date: 2015-12-16
XIAN MODERN CHEM RES INST
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  • Description
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that when accurately evaluating and characterizing the thermal expansion characteristics of propellants and explosives, the existing linear expansion test technology cannot satisfy the accurate measurement of thermal expansion characteristics of propellants and explosives, and lacks a direct and accurate test system and method for measuring the thermal expansion coefficient of propellants and explosives

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  • Explosive body expansion coefficient testing device
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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0017] Such as figure 1 As shown, the propellant and explosive body expansion coefficient testing device provided by the present invention is composed of a volume measurement system, a thermostat, a measurement control system and the like. The volume expansion measuring element is the core component of the test system, and is mainly composed of a chamber, a measuring capillary, a float, a precision laser displacement sensor, and a sample chamber volume control element. The initial volume of the sample is obtained by adjusting the height of the sample volume control element so that the liquid level before and after placing the sample is at the same position, and the heat of the sample is calculated by measuring the change of the liquid level of the swelling liquid in the thin tube at different temperatures measured by the precision la...

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Abstract

The invention discloses an explosive body expansion coefficient testing device based on a liquid swelling method and a precise laser displacement sensor. The explosive body expansion coefficient testing device is composed of a volume metering system, a thermostat, a measurement control system and the like and can be directly used for measuring the volume increment of heat expansion of explosive and related materials and calculating the volume expansion coefficients of the explosive and related materials. When a testing system works, a swelling liquid flow system is constituted by a sample cavity in the volume metering system, a measuring thin tube, a sample cavity volume adjusting element and the like. The heat expansion volume increment of a sample is calculated through the liquid level height change displayed by the precise laser displacement sensor so that the volume expansion coefficient of the sample can be calculated. The explosive body expansion coefficient testing device has the advantages of being simple in operation, high in measuring accuracy, low in labor intensity and achieving the technical purpose that the explosive heat expansion coefficient is directly measured.

Description

technical field [0001] The invention belongs to the field of propellant and explosive performance testing, and mainly relates to a propellant and explosive body expansion coefficient testing device, in particular to a non-homogeneous explosive, propellant and cladding material, propellant and explosive based on precision laser displacement sensor and liquid swelling method Volume expansion coefficient test device. Background technique [0002] The coefficient of thermal expansion is the characteristic property of a material that deforms itself in hot and cold environments. Generally speaking, as the temperature rises, the volume of solid propellant and explosive will correspondingly increase, and when the temperature decreases, the volume of propellant and explosive will decrease accordingly. This phenomenon is called the thermal expansion of propellant and explosive. Thermal expansion may occur in propellant and explosive in the environment of propellant molding process, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/16
Inventor 杜姣姣张林军刘志伟王琼涂建张皋张冬梅贾林
Owner XIAN MODERN CHEM RES INST
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