Automatic bursting point test instrument

Abstract

The invention discloses an automatic bursting point test instrument, which mainly comprises a temperature control system, a special reactor, an automatic sample injection mechanism, a control system and a signal and data acquisition and processing system, wherein the special reactor (a detonator on which a copper plug cap is pressed) in which an explosive sample is filled is placed in a heating furnace (a heating medium is filled in the furnace),of which the temperature is constant, to be heated through mechanical clamping handles of the automatic sample injection mechanism and the control system; when the sample burns or explodes, a contact detector and a sound sensor of the signal and data acquisition and processing system are used for signal detection; lag phase (time for burning and explosion) for the sample to burn and explode is recorded; meanwhile, the liquid level of the heating medium, namely a wood alloy bath solution, at the moment is acquired; then the bursting lag phase at other selected temperatures is tested simultaneously; and finally, the bursting point with 5s lag phase of the sample is calculated through the signal and data acquisition and processing system.

Description

technical field [0001] The invention relates to a test instrument in the technical field of explosives, in particular to an automatic burst point test instrument. Background technique [0002] The explosion point of explosives (explosion point with 5-second delay period) is an important indicator for evaluating the safety of explosives, and it has important guiding significance for the development, production, processing and use of explosives. In the process of powder pressing, casting, turning and forming of explosives and production, the determination of various process temperatures should be based on it. In GJB1466-92 "Procedures for the Finalization of Explosives and Explosives", the flash point is listed as a must-test item for the design and finalization of single explosives, mixed explosives, solid propellants and propellants. At present, a national military standard method has been formed - GJB772A-97 method 606.1 . The test method is mainly to put the quantitative...

AI Technical Summary

Problems solved by technology

[0004] 1. The height of the heating medium is visually judged by the experimenter whether it needs to be filled, and the accuracy of the judgment is poor, which in turn causes the insertion depth of the detonator shell to be different, which ultimately leads to poor repeatability of the test results

[0005] 2. The burst point test volume is very large, and the experimenters need to select at least 4 to 5 temperature points for the test within the 2s ~ 20s burst delay period, and repeat the test at least 5 times for each temperature point, and then according to the burst delay period and the burst temperature. The relational formula finally calculates the burst point of the 5s lag period of the sample. To obtain the burst point data of a sample, at least 20 to 30 manual tests are required, so the labor intensity of the test personnel is very high.

[0006] 3. The test is manually operated. When the sample burns or explodes, the experimenter is vulnerable to personal injury, that is, the personal safety of the experimenter is difficult to guarantee.

[0007] 4. Due to the heating medium of the explosion point test——Wood alloy contains lead and cadmium, which are toxic and harmful metals. When the temperature is high, the metal lead and cadmium volatilize, which will cause great harm to the physical and mental health of the experimenters who conduct experiments at close range.

[0008] 5. The test data sometimes needs to be recorded manually, and the human error is large, so the accuracy of the test results is poor

Images