High-energy dynamite charging thermal expansivity measuring device and method

A technology of thermal expansion coefficient and high-energy explosives, which is applied in the experimental field of explosives performance parameters, can solve the problem that the correlation curve of expansion displacement, temperature and pressure cannot be obtained, the performance evaluation methods of explosives cannot meet the research needs, and cannot be directly used to guide the charging of explosives. Drug design and other issues to achieve the effect of a wide range of applications

Active Publication Date: 2017-11-24
XIAN MODERN CHEM RES INST
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Problems solved by technology

[0005] (1) This method is only applicable to the determination of thermal expansion coefficient of propellant and explosive under free conditions, and the measured expansion coefficient cannot be directly used to guide the design of propellant and explosive charge;
[0006] (2) This method cannot obtain the relationship curve among expansion displacement, temperature and pressure, which is not conducive to comprehensive analysis and evaluation of samples
[0007] Giant ammuni

Method used

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  • High-energy dynamite charging thermal expansivity measuring device and method
  • High-energy dynamite charging thermal expansivity measuring device and method
  • High-energy dynamite charging thermal expansivity measuring device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] In this embodiment, the expansion displacement of PBXN-109 explosive (no curing agent added, similar to slurry semi-fluid) is measured. The diameter of PBXN-109 explosive is 60mm and the length is 180mm.

[0034] Displacement sensor 6 adopts LP804 of OMEGA Company, and the sensor resolution is 0.00127mm; plate spring 2 is made of 5mm thick 60Si2Mn steel, and is heat treated, and the elastic coefficient K of the middle plate is calibrated before use; bracket 1, piston 3 and sample tube 4 are all made of 35Mn processing and heat treatment; the sealing ring 5 is a V-shaped sealing ring made of silica gel.

[0035] The design and installation of the sample device are as follows. The device includes a bracket 1, a displacement sensor 2, a leaf spring 3, a heating jacket 4, a thermocouple 5, a sample tube 6, a piston 7, a sealing ring 8 and a sample 9. The device as a whole It is a two-layer board house structure, the displacement sensor 2 is installed on the second layer, and ...

Embodiment 2

[0044] In this embodiment, the expansion displacement of RL-F explosive (solid press-packed explosive) is measured.

[0045] Displacement sensor 6 adopts LP804 of OMEGA Company, and the sensor resolution is 0.00127mm; plate spring 2 is made of 5mm thick 60Si2Mn steel, and is heat treated, and the elastic coefficient K of the middle plate is calibrated before use; bracket 1, piston 3 and sample tube 4 are all made of 35Mn processing and heat treatment; the sealing ring 5 is a V-shaped sealing ring made of silica gel.

[0046] The design and installation of the sample device are as follows. The device includes a bracket 1, a displacement sensor 2, a leaf spring 3, a heating jacket 4, a thermocouple 5, a sample tube 6, a piston 7, a sealing ring 8 and a sample 9. The device as a whole It is a two-layer board house structure, the displacement sensor 2 is installed on the second layer, and the sample tube 6 is installed on the bottom layer. The cover plate C1-5 consists of the cov...

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Abstract

The invention discloses a high-energy dynamite charging thermal expansivity measuring device and method. The problem that an existing test device fails to measure solid state dynamite charging thermal expansion characteristic parameters is solved. According to the basic principle of the device and method, a heating jacket is used for heating dynamite charging to a certain temperature, a thermocouple is used for measuring a dynamite temperature in real time, spring steel with a known deformation coefficient is used for measuring pressure generated when the dynamite charging is heated and expanded, meanwhile, deformation of the spring steel is used for pushing a displacement sensor located above to obtain displacement data, and thus, a three-dimensional relational graph of the temperature, the expansibility and the expansion size of the dynamite charging is established. The device and method provided by the invention have the advantages of high universality, high accuracy and low cost, the requirements for measuring expansion parameters of liquid explosives, slurry explosives and all-solid-state explosives can be met simultaneously, and a more comprehensive data support is provided for middle-large sized ammunition charging designs.

Description

technical field [0001] This application belongs to the technical field of explosive performance parameter experiment, and relates to a high-energy explosive charge thermal expansion coefficient measurement device and method, which is mainly used to measure the law of influence of environmental temperature changes on explosive charge performance, and obtain displacement-time, volume- Time, pressure-time, displacement-temperature parameters provide technical and data support for the development of medium and large ammunition charges. Background technique [0002] Explosives may encounter unexpected thermal stimulation during manufacture, transportation, and use. Due to the nature of thermal expansion and contraction of materials, explosives may expand or contract radially and axially. Under normal circumstances, in weaponry, explosives are assembled in a projectile body with a fixed shape and limited space, and are in close contact with the projectile. Expansion of the pyrotec...

Claims

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Application Information

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IPC IPC(8): G01N25/16
CPCG01N25/16
Inventor 李鸿宾金朋刚杨建高赞姜夕博王建灵
Owner XIAN MODERN CHEM RES INST
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