Excitation powder of flying plate type electric detonator without detonating powder

Abstract

The invention discloses excitation powder of a flying plate type electric detonator without detonating powder, relating to a detonator explosive. The invention aims to provide excitation powder which can be loaded under a certain pressure without obviously influencing the sensitivity, can be compacted to avoid powder leakage and can ensure the detonator to be reliably ignited. The technical scheme of the invention is as follows: the excitation powder comprises the following components in parts by weight: 3-7 parts of penthrite, 1-2 parts of potassium chlorate and 0-1 part of expanded perlite, wherein 350-450 milliliters of adhesive are added to every one kilogram of the mixed components; the apparent density of the penthrite is 0.7-0.9g / cm<3>; the purity of the potassium chlorate is no less than 90%; the adhesive is polyvinyl alcohol resin of which the concentration is 3-7%; and the penthrite is a coarse penthrite of which the particle size is 20-60 meshes or a mixture containing 50-70% of 20-60-mesh penthrite and 30-50% of 100-300-mesh penthrite. The invention is mainly used for producing the excitation powder of an electric detonator.

Description

technical field [0001] The invention relates to a detonator explosive, in particular to an excitation charge used in a flyer-type electric detonator without priming charges. technical background [0002] In the prior art, the detonation mechanism of the flyer-type electric detonator without priming charge is as follows: the electric ignition element is energized to make the electric ignition head ignite, which promotes the deflagration of the excitation charge in the excitation device, and the high temperature and high pressure generated by the deflagration of the electric ignition head and the excitation charge Under the action of gas, the bottom of the rigid inner tube of the excitation device ruptures due to high pressure, forming high-speed flying pieces. The high-speed flying pieces impact and detonate the detonator charge below, and the detonation transmission is completed step by step. [0003] As the technical core of the flyer-type non-primer electric detonator, the...

AI Technical Summary

Problems solved by technology

Due to the defect that the sensitivity of these two exciters decreases significantly after being under pressure, in order to ensure reliable detonation of the detonator, the relevant filling process requires both to be filled in a natural state (hereinafter referred to as "loose pack"), and cannot be loaded under pressure.

[0005] Since the propellant is on the top layer of the basic detonator without priming charge, if the basic detonator is kept open, the "loose" propellant spraying phenomenon will easily occur during the assembly process of the transshipment basic detonator and the detonator, which will have a significant impact on product quality and also There are certain potential safety hazards; if plugging elements such as ignition lead cores are installed above the "loose-packed" stimulating agent, not only the process and cost will increase significantly, but the pressure transmitted by the pressing sealing element will also affect the excitation reliability of the stimulating agent. there is a certain threat