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Electric firing explosive head ignition pressure test method

A test method and pressure test technology, applied in fuzes, weapon accessories, offensive equipment, etc., can solve the problems affecting the delay accuracy of delayed electric detonators, the ignition time of delayed charge, and the combustion speed of the combustion environment pressure, and achieve the effect of improving the accuracy.

Inactive Publication Date: 2017-01-25
ANHUI UNIV OF SCI & TECH
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  • Summary
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The ignition pressure generated by the electric ignition charge will make the ignition time of the delay charge, the pressure of the combustion environment and the burning speed different, thus affecting the delay accuracy of the delay electric detonator

Method used

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  • Electric firing explosive head ignition pressure test method
  • Electric firing explosive head ignition pressure test method
  • Electric firing explosive head ignition pressure test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] refer to figure 1 , the test tube 1 is a hollow transparent quartz tube with a length of 550 mm, an inner diameter of 10 mm, and a wall thickness of 1.50 mm. There is a scale line with a measuring range of 550 mm on it, and the adjacent scale value is 1 mm.

[0072] refer to figure 2 , Flyer 2 is a disc structure, made of colored lightweight high-strength quartz, with a diameter of 9.96 mm and a thickness of 1 mm. There are 360 ​​engraved lines at equal intervals on its side, and the corresponding central angle of two adjacent engraved lines is 1°. The color flyer makes the motion state of the flyer captured by the high-speed camera clearer, which is beneficial to the improvement of measurement accuracy.

[0073] refer to image 3 , Put the flying piece 2 into the test tube 1, the quartz has high hardness and small friction coefficient.

[0074] refer to Figure 4 , the outer diameter of the fixed plug 4 is 10 mm, and the axis is provided with a hole with an apertu...

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Abstract

The invention provides an electric firing explosive head ignition pressure test method. Under a vacuum condition, a flying sheet in contact with an electric firing explosive head is designed; a moving track of the flying sheet in a test tube in an electric firing explosive head ignition process is shot by a high-speed camera, and is simplified into a physical model; a mathematical measure is used for processing relevant data in the flying sheet moving model for solving stress of the flying sheet, i.e., the ignition pressure of the tested electric firing explosive head. The method has the advantages that the ignition pressure of the electric firing explosive head and the dynamic change of the electric firing explosive head can be precisely measured; the problem of difficulty in dynamic measurement of the electric firing explosive head ignition pressure is solved; reliable theoretical basis is provided; the operation is convenient; a measurement result is precise.

Description

technical field [0001] The invention relates to the testing technology of pyrotechnics, in particular to the testing of the ignition pressure of electric ignition powder. Background technique [0002] Commonly used delay electric detonators, the ignition mode of its delay charge is that the electric ignition charge head is heated and burned to ignite. At present, most of the electric ignition powder heads commonly used in my country are bridge wire type and steel sheet type, and a certain amount of ignition powder is coated on it. After the electricity is turned on, the bridge wire or steel sheet heats up to ignite the ignition powder, providing initial energy for the delay charge. The ignition pressure produced by the electric ignition charge will make the ignition time of the delay charge, the pressure of the combustion environment and the burning speed different, thereby affecting the delay accuracy of the delay electric detonator. So it is still particularly important t...

Claims

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Application Information

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IPC IPC(8): F42C21/00
CPCF42C21/00
Inventor 朱帅刘锋何志伟邢化岛钱海黄文尧
Owner ANHUI UNIV OF SCI & TECH
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