Electronic delay ignition device used for firing fire extinguishing bomb in grading ammunition chambers

Abstract

The invention discloses an electronic delay ignition device used for firing a fire extinguishing bomb in grading ammunition chambers. The device comprises a sealing plate, a bridge wire, a head agent,an ignition agent, an ignition tube shell, a sealing shell, a pressure switch, a time delay switch, a power supply, a lead, a sealing assembly and a piston; the piston is arranged between a first-level ammunition chamber and a second-level ammunition chamber, a cavity is formed in one side, facing the first-level ammunition chamber, of the piston, the ignition tube shell is arranged in the cavity, and the bridge wire, the head agent and the ignition agent are packaged in the ignition tube shell, and is sealed by the sealing plate; the lead penetrates through the ignition tube shell and is connected with the pressure switch, the time delay switch and the power supply in series, and the two ends of the lead are connected with the two ends of the bridge wire; and the sealing shell seals thecomponents. The device is used for delaying ignition of the first-level ammunition chamber in the firing process of the fire extinguishing bomb in the grading ammunition chambers, and has the advantages of simple structure, safety, reliability and convenience in manufacture.

Description

technical field [0001] The invention relates to the technical field of launching fire extinguishing bombs with graded chambers, in particular to an electronic delay ignition device for launching fire extinguishing bombs with graded chambers. Background technique [0002] There are a series of larger problems in using traditional large-caliber fire extinguishing bomb launching devices. Because the traditional launch method uses a single drug chamber to ignite the gunpowder to push the fire extinguishing bomb forward, during the movement of the fire extinguishing bomb, due to the expansion of the volume of the drug chamber, the pressure of the gunpowder gas after the bomb is linearly distributed, and the pressure at the bottom of the bomb is much smaller than the pressure at the bottom of the launch tube, while the fire extinguishing bomb The muzzle velocity of the fire extinguishing bomb depends on the pressure at the bottom of the bomb, and the safety of launching depends on...

AI Technical Summary

Problems solved by technology

Because the traditional launch method uses a single drug chamber to ignite the gunpowder to push the fire extinguishing bomb forward, during the movement of the fire extinguishing bomb, due to the expansion of the volume of the drug chamber, the pressure of the gunpowder gas after the bomb is linearly distributed, and the pressure at the bottom of the bomb is much smaller than the pressure at the bottom of the launch tube, while the fire extinguishing bomb The muzzle velocity of the fire extinguishing bomb depends on the pressure at the bottom of the bomb, and the safety of launching depends on the pressure at the bottom of the chamber; due to the large mass of the fire extinguishing bomb, sufficient charge is needed to ensure the muzzle velocity of the fire extinguishing bomb to reach a longer distance during the launch process. The quality of the charge will cause the pressure at the bottom of the launch tube to be too high, which will endanger the safety of the launch; while reducing the charge will not be able to effectively promote the acceleration of the fire extinguishing bomb, and cannot meet the design requirements of the fire extinguishing bomb launcher

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