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A detachable sample cage for a device for testing the expansion coefficient of explosives

A technology of volume expansion coefficient and testing equipment, which is applied in the direction of measuring equipment, fuel oil testing, and material inspection products. Avoid cumbersome test process, facilitate volume calibration, and simplify the test process

Active Publication Date: 2017-04-12
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that when using the principle of the liquid swelling method to accurately evaluate and characterize the thermal expansion characteristics of propellants and explosives, due to the large difference in volume expansion coefficient between liquid and solid propellants and explosives materials, the existing propellants and explosives body expansion coefficient When the test device is used to test small powder samples with a large difference in volume from the original sample cavity, the measurement accuracy is low, and the reproducibility of the test results is poor; The swelling liquid is easily polluted by slag on the surface, so the swelling liquid needs to be replaced frequently, resulting in cumbersome testing process

Method used

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  • A detachable sample cage for a device for testing the expansion coefficient of explosives
  • A detachable sample cage for a device for testing the expansion coefficient of explosives
  • A detachable sample cage for a device for testing the expansion coefficient of explosives

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0015] Such as figure 1 As shown, the experiment is carried out by using a propellant body expansion coefficient test device with an inner cavity size of φ41mm*H 41mm, and a detachable sample cage with a diameter of φ21mm*H 21mm and a wall thickness of 5mm is selected (wherein, φ is the inner diameter of the base, and H is the inner height ). During the test, first separate the cover plate 3 from the base 8, and place the sample 5 (the sample size is φ20mm*H 20mm) on the base to ensure that the surface of the sample does not contact the inner wall of the sample cage when the sample is fully expanded. Then place the cover plate 3 on the base, use the connection grooves 4 and 7 to fix the two together, then use the guide post cover plate connection groove 2 to fix the sample cage and the propellant body expansion coefficient testing d...

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Abstract

The invention discloses a detachable sample cage for an explosive volume expansion coefficient measuring device. The detachable sample cage is composed of a cover plate (3) and a base (8), and all parts are connected in the mode that the top of the cover plate (3) is provided with liquid flowing holes (1) which are formed in the mode of penetrating through the cover plate, the periphery of the upper end of the cover plate is provided with guide column cover plate connecting grooves (2), and the cover plate (3) and the base (8) are combined together through base connecting grooves (4) and cover plate connecting grooves (7). The detachable sample cage is suitable for the explosive volume expansion coefficient measuring device, and the problems that in an existing explosive volume expansion coefficient measuring device, measuring cannot be performed or the measuring precision is lower when the sample size is too small due to the fact that the volume expansion coefficient of a solid and the volume expansion coefficient of liquid are quite different, and swelling liquid is polluted due to the fact that explosive columns scale off are solved.

Description

technical field [0001] The invention belongs to the field of propellant and explosive performance testing, and mainly relates to a detachable sample cage for a propellant and explosive body expansion coefficient test device, in particular to a propellant and explosive column that is used for a propellant and explosive column that is too small in size or not tightly bonded and easy to drop slag Detachable sample cage. Background technique [0002] The thermal and explosive body expansion coefficient testing device is a propellant and explosive body expansion coefficient testing device based on a precision laser displacement sensor and a liquid swelling method. Its working principle is: completely immerse the solid sample to be tested in an inert liquid with stable properties. After the sample is completely infiltrated, use a precision displacement sensor to measure the liquid level height of the liquid at different temperatures, and use the height difference to calculate the ...

Claims

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Application Information

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IPC IPC(8): G01N33/22
CPCG01N33/227
Inventor 张皋杜姣姣常海王琼张冬梅张林军贾林顾妍于思龙
Owner XIAN MODERN CHEM RES INST
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