Gas generator spraying pipe one-way seal structure

Abstract

The invention discloses a gas generator spraying pipe one-way seal structure, and relates to the field of initiating explosive device structures. A metal ball, a sliding rod, a spraying pipe and a shell are included. The spraying pipe is of an axial hollow pipeline structure. The shell sleeves the outer wall of the spraying pipe. The metal ball is of a sphere structure and is arranged in the spraying pipe. The sliding rod penetrates through the metal ball in the diameter direction. The two axial ends of the sliding rod are clamped at the side wall position of the spraying pipe, and sliding rodlimiting is achieved. The position, corresponding to the metal ball, of the inner wall of the spraying pipe is coated with seal glue. The effects that the metal ball is bonded, random sliding of themetal ball is prevented, and seal is achieved are achieved. The inner wall of the spraying pipe comprises a cylinder face inner wall and a conical face inner wall, wherein the conical face inner wallis arranged at the axial connecting position of the spraying pipe and the shell, and the cylinder face inner wall and the conical face inner wall are coaxially connected and are in smooth transition.By means of the gas generator spraying pipe one-way seal structure, when a plurality of generators are connected in series to work, the situation that high-temperature gas of the working generators reversely flows into the non-working generators, the non-working generators get abnormal and are ignited and combusted is prevented.

Description

technical field

[0001] The invention relates to the field of pyrotechnic structure design, in particular to a one-way sealing structure of a gas generator nozzle. Background technique

[0002] The gas generator is a special type of pyrotechnic product, which is composed of a shell, a chemical, an igniter, a generator nozzle, a sealing ring, and other components. The gas is burned in the shell to form a high-pressure and high-temperature gas that is sprayed from the generator nozzle. After it is released, it works to achieve the set function. The main function is to provide heat source or gas to do work. It has the characteristics of one-time use and cannot be suspended once it is started.

[0003] Due to space constraints, when the length of a single generator cannot be greatly increased to achieve the purpose of long-term work, the single generator can only be split into multiple generators to work in series to achieve long-term work; when required in different time periods...

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