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Large charging pyrotechnics type gas generator

A technology of gas generator and gas generating agent, which is applied in the direction of weapon accessories, transportation and packaging, vehicle safety arrangements, etc., to achieve the effects of good safety, long storage time, convenient and reliable ignition

Inactive Publication Date: 2006-11-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a pyrotechnic gas generator with a large amount of charge, which is filled into the air bag by using the high-pressure gas generated by the combustion of the gas generating agent to solve the problem of floating the sunken objects at the bottom of the water. technical problems

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  • Large charging pyrotechnics type gas generator

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Embodiment Construction

[0013] exist figure 1 Among them, igniter (1), end cover (2), shell (3), combustion chamber (4), filter screen (5), chemical cooling chamber (6), physical cooling chamber (7), pressure buffer chamber (8 ), exhaust ports (9) are arranged axially in turn to form a pyrotechnic gas generator. The shell (3) is a cylindrical structure, and is manufactured by combining welding and pin connection to improve its pressure resistance. The end cover (2) adopts a flange structure, and is connected with the cylindrical shell (3) by bolts. In order to ensure the overall airtightness of the gas generator, the joint is sealed with a copper high-temperature and high-pressure gasket. The igniter (1) can be a common electric igniter, which is inserted from the shaft center of the end cover to the bottom of the combustion chamber (4) to ignite by threaded connection, so that the gas generating agent in the combustion chamber (4) can burn as far as possible along the axial direction. Thereby redu...

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Abstract

A fireworks-type gas generator with large charge volume able to work in water is composed of an igniter, a reactor containing the fireworks-type gas-generating agent, such as sodium azide type gas-generating agent prepared from sodium azide, oxide, burning speed regulator and adhesive, a chemical cooler containing granular carbonate, and a physical cooler containing spherical Al2O3.

Description

Technical field [0001] The invention relates to a pyrotechnic gas generator with a large charge (hundreds of grams to tens of kilograms). technical background [0002] Conventional gas generators are mainly used in automotive airbag devices. It is characterized by fast burning speed and small charge (generally only a few grams or tens of grams). Due to the difficulty of combustion process control and high-temperature gas cooling, gas generators with large charges are rarely reported at home and abroad. It has broad application prospects. [0003] At present, the salvage of underwater sunken objects at home and abroad mainly adopts the mechanical force salvage method, that is, the underwater sunken objects are lifted by the lifting steel cable of the salvage ship. This salvage method generally has the disadvantages of high cost of salvage equipment, relatively long replacement period, etc., and can no longer adapt to the needs of various salvage work, and a new salvage tec...

Claims

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Application Information

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IPC IPC(8): B60R21/26F42B3/10
Inventor 杜志明李畅赵林双王宏社
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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