Test instrument of flame sensitivity of loading material for initiating explosive device

Abstract

The invention discloses a test instrument of the flame sensitivity of a loading material for an initiating explosive device, belonging to the field of performance test of the loading material for the initiating explosive device. Based on the existing HGY-1 type flame sensitivity instrument, a height adjusting device comprising a ball screw pair and a stepper motor, a control instrument, a magnetic induction block, a zero-position sensor and a limit sensor are additionally arranged, and the ball screw pair is fixedly connected with a worktable for placing samples of the loading materials for the initiating explosive device to be tested and the stepper motor; and under the matching of the magnetic induction block, the zero-position sensor and the limit sensor, a control instrument can send various driver instructions to the stepper motor, so that the stepper motor rotates according to the step length given by the instructions, thereby driving the worktable to reach the set test position. By using the test instrument of the invention, the problem of automatic control of the height of loading material samples in the sensitivity test of the loading material for the initiating explosive device is solved, the adjustment precision and test precision of the ignition height are improved, the zero-distance ignition is also realized, and the test instrument can test the flame sensitivity for the loading materials with low flame sensitivity, simultaneously has the advantages of simple structure and reliable ignition, is convenient to operate and the like.

Description

technical field [0001] The invention belongs to the technical field of pyrotechnics, and mainly relates to a performance test device for pyrotechnics, in particular to a special test for measuring the flame sensitivity of pyrotechnics such as priming powder, triggering powder, ignition powder, pyrotechnic powder, etc. instrument Background technique [0002] Most pyrotechnic agents use ignition to stimulate their effects, and only in rare cases do they use explosions to initiate their effects. Therefore, in order to understand the ignition performance of pyrotechnic agents and to solve The reliability and safety of the action of pyrotechnic agents on flames requires understanding the flame sensitivity value of pyrotechnic agents. Use a quantitative sample of pyrotechnic agent, after it is affected by flame at a certain height, observe whether it ignites, and calculate its 50% ignition height, which is the flame sensitivity value of the agent. [0003] The HGY-1 flame sensi...

AI Technical Summary

Problems solved by technology

The HGY-1 Flame Sensitivity Tester has the following defects: (1) The height adjustment flexibility between the chemical sample and the flame source is poor. After each ignition test, the test distance is manually adjusted in the instrument box filled with residual gas, and the flame height adjustment accuracy is low. Poor, which directly affects the flame sensitivity test accuracy of pyrotechnic agents; (2) The instrument has blind spots in observation, and cannot perform flame sensitivity tests of low-sensitivity agents; (3) Autotransformers are used to ignite black powder columns, and during operation and debugging It is easy to cause overvoltage to fuse the resistance wire and damage the instrument

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