Device for continuously measuring thermal stability of propellant grains of explosives and powder

A thermal stability, explosives technology, applied in the direction of measuring devices, fuel testing, instruments, etc., can solve the problems of reading drift, deviation from the reference value, no continuous monitoring device, etc., to improve accuracy, improve safety, continuous long-term Accurately Measured Effects

Active Publication Date: 2017-06-20
XIAN MODERN CHEM RES INST
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0010] During the long continuous measurement process of the load cell, the readings will drift and deviate from the original reference value, which is also the difficulty that continuous monitoring needs to overcome
[0011] The monitoring of decomposed gas in the aging process can only be monitored periodically, and there is no continuous monitoring device

Method used

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  • Device for continuously measuring thermal stability of propellant grains of explosives and powder
  • Device for continuously measuring thermal stability of propellant grains of explosives and powder
  • Device for continuously measuring thermal stability of propellant grains of explosives and powder

Examples

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Embodiment Construction

[0038] see Figure 1 ~ Figure 4 , this example provides a device for continuous measurement of the thermal stability of propellant and explosive powder, including a weighing unit, a heating furnace, a gas decomposition product detection unit and a control unit.

[0039] The weighing unit includes a lanyard 3, a cone 7 for a reference sample, a reference sample 8, a thermal insulation ring 9, a reference sample lifting platform 10, a lifting handle 11, a sample suspension half ring 12, a sample basket 14, and a pillar 18, pin 20, motor and weighing balance.

[0040] Among them, the lanyard 3 is a steel rope with a diameter of Ф2mm; the cone 7 for the reference sample is made of stainless steel, the cone angle is 60°, and the diameter of the lower end is Ф36mm; Shaped cavity threaded connection, by tightening the handle 25 on the upper cover 24, changing the tightening degree of the upper cover 24 can adjust the surrounding volume of the reference sample 8, the outer diameter o...

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Abstract

The invention discloses a device for continuously measuring thermal stability of propellant grains of explosives and powders. The device comprises a weighing unit, a heating furnace, a gas decomposition product detecting unit and a control unit. A reference sample with an adjustable volume is designed, one measuring point is measured and calculated for many times by lifting the reference sample, floating force and reading drift of a scale during weighing are deducted, and continuous long-term accurate measurement is realized; the special heating furnace adopts two furnace chambers, so that the interaction effect of samples is eliminated, and temperature control accuracy is improved; a decomposed gas sampling and qualitative-quantitative analyzing part is adopted to realize continuous analysis on decomposed gas. The device is high in degree of automation, is wide in test temperature range, and is safe and reliable in measuring.

Description

technical field [0001] The invention relates to a measuring device for propellant and explosive, in particular to a device for continuous measurement of thermal stability of propellant and explosive column. Background technique [0002] Explosives are dangerous substances that are prone to combustion and explosion, and their thermal stability refers to the ability of the physical and chemical properties of explosives not to change under the action of heat. During the storage process of explosives, due to the generation and release of trace decomposition gases, the volatilization and sublimation of individual components, etc., the quality gradually decreases. The change of components and the escape of decomposition gas will change the energy performance, mechanical properties and ballistic properties of propellant and explosive, which may affect the use of propellant and explosive products. It is a commonly used method in this field to quickly and economically evaluate the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/22
CPCG01N33/227
Inventor 刘文亮张林军常海王琼于思龙涂健张冬梅杜姣姣贾林顾妍王芳芳
Owner XIAN MODERN CHEM RES INST
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