Mounting method of device for testing pressure at different depths under impact of explosives and powders

A technology of pressure testing and installation method, which is applied in the direction of fuel oil testing, blasting force measurement, material inspection products, etc. It can solve the problems of affecting the measurement results, the sensor is not in close contact with the powder column to be tested, and the measurement results are affected, so as to avoid the signal interference effect

Active Publication Date: 2015-12-30
XIAN MODERN CHEM RES INST
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Problems solved by technology

[0003] (1) There are potential safety hazards in the test assembly. Detonators, boosters, plane wave generators, loaded grains, partitions, grains to be tested, sensors, etc. are simply superimposed together, and the contact surfaces can move freely. Easy to fall and dangerous;
[0004] (2) The sensor is not in close contact with the drug column to be tested, and there is an air gap, which affects the measurement result;
[0005] (3) The concentricity of the components cannot be guaranteed, especially if the sensitive part of the sensor is not in the center of the grai

Method used

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  • Mounting method of device for testing pressure at different depths under impact of explosives and powders
  • Mounting method of device for testing pressure at different depths under impact of explosives and powders

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Embodiment 1

[0040] This embodiment is the installation method of the pressure test device at different depths under the impact of GUHL-2 explosives. The powder columns 9 to be tested are three GUHL-2 tablets with thicknesses of 7.06mm, 5.28mm and 2.70mm, stacked from top to bottom A manganese-copper piezoresistive sensor 8 is embedded between every two tablets, and its assembly method includes the following steps:

[0041] 1) Use a 10x magnifying glass to check whether there are bubbles, impurities and damage in the manganese-copper piezoresistive sensor 8 in the insulated package. If it is unqualified, it should be replaced in time;

[0042] 2) Use 2000-mesh metallographic sandpaper to polish the surface of the drug column 9 to be tested, and then clamp the absorbent cotton with tweezers to wipe the surface of the drug column 9 to be tested;

[0043] 3) The screw rod 10 passes through the threaded hole of the lower fixing plate 11, and the bottom is fixed with nuts 12, and the nuts 12 at...

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Abstract

The invention discloses a mounting method of a device for testing pressure at different depths under the impact of explosives and powders. According to the method, all testing components are fixed through a testing support, and reliable positioning of all the components is guaranteed; a powder column to be tested, manganin piezoresistive sensors, a partition plate, a loaded powder column, a plane wave generator and a booster explosive are placed between a lower fixing plate and an upper fixing plate from bottom to top, screws and nuts are used for squeezing and fixing, and no air gaps exist between all the components. The method is applied to mounting the device for testing the pressure at different depths under the impact of the various explosives and powders, all the components are reliably fixed and positioned, and the accuracy of test measuring results is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of explosives, and in particular relates to a method for installing pressure testing devices at different depths under the impact of explosives. The method realizes reliable positioning of test components in a cheap and simple manner. Background technique [0002] Studying the shock initiation and detonation growth process of propellant and explosive has important guiding significance for the safety, reliability and formula design of propellant and explosive. The whole process of explosives from low-pressure shock initiation to steady-state detonation belongs to the category of detonation dynamics and is an important direction in the field of detonation, and the pressure measurement of explosives at different depths under impact is the main method of this research . At present, there is no relevant standard test device and installation method for pressure measurement at different depths under the impact of ...

Claims

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Application Information

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IPC IPC(8): G01L5/14G01N33/22
Inventor 赵娟王晓峰冯博田轩徐洪涛封雪松冯晓军
Owner XIAN MODERN CHEM RES INST
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