CN1868788A - Large charging pyrotechnics type gas generator - Google Patents
Large charging pyrotechnics type gas generator Download PDFInfo
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- CN1868788A CN1868788A CNA2005100719576A CN200510071957A CN1868788A CN 1868788 A CN1868788 A CN 1868788A CN A2005100719576 A CNA2005100719576 A CN A2005100719576A CN 200510071957 A CN200510071957 A CN 200510071957A CN 1868788 A CN1868788 A CN 1868788A
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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
Affiliated technical field
The present invention relates to the pyrotechnic gas generator of a kind of big explosive load (hundreds of restrain tens of kilogram).
Technical background
Gas generator in the past is mainly used in Automotive Safety Air Bags.Be characterized in that combustion speed is fast, explosive load little (generally having only several grams or tens grams).The gas generator of big explosive load is because the big difficulty of existence such as Combustion Process Control, high-temperature gas coolings, domestic and international rare report, but big explosive load gas generator has wide practical use in field such as immersed object salvage, aerospace vehicle recovery landing buffering under water.
At present, under-water hypostasis is salvaged the main mechanical force overshot that adopts both at home and abroad, promptly water-bed hypostasis is sling with hoist steel cable by salvor.Shortcoming such as this Refloatation method ubiquity marine salvage equipment cost height, replacement cycle are long can not adapt to the needs of various fishing jobs, presses for new fishing operation.
In addition, Britain and Australia all develop the bag of lifting that is used for submarine mine come-up in succession in recent years, but what all adopt is the source of the gas of high-pressure gas bottle as air bag, and weight is bigger, and tolerance is limited.
Summary of the invention
The objective of the invention is provides a kind of pyrotechnic gas generator of big explosive load in order to overcome deficiency of the prior art, has solved the technical matters that water-bed hypostasis is floated thereby the high pressure gas that utilize the gas generant burning to produce charge into air bag with it.When the total load value of shipwreck surpasses the crane capacity of salvor when big, can respectively several underwater salvage air bags be placed on shipwreck two string sides, lift by crane when stressed salvaging shipowner's lifting wirerope, the gas generator igniting is inflated in air bag, utilizes the buoyancy of air bag with joint efforts large tonnage wreck salvage to be gone out the water surface with the power of hanging of salvaging shipowner's hoisting crane is formed.
The technical solution adopted for the present invention to solve the technical problems is: in gas generator inside, firing unit, combustion chamber, chemical cooling room, physics cooling room, pressure buffer chamber, exhausr port be axial arranging successively, separate combustion chamber, chemical cooling room, physics cooling indoor aerification producer, chemical coolant, physics cooling system conditioner respectively between combustion chamber, chemical cooling room, physics cooling room, the pressure buffer chamber with filter screen.Its mode of operation is, at first ignition signal is passed to firing unit by wired or wireless remote control mode, firing unit starts the gas generant powder column bottom priming in the combustion chamber, gas generant after lighting carries out the aspect burning, the high temperature and high pressure gas that burning produces at first enters chemical cooling room by filter screen, divides heat of desorption through chemical coolant, greatly reduces the temperature of combustion gas, chemical coolant decomposes the generation portion gas simultaneously, has increased gas generating amount.Gas enters the physics cooling room by filter screen more subsequently, and by the heat absorption of physics cooling system conditioner, high-temperature gas is further lowered the temperature, and the solid residue in the resultant of reaction of elimination simultaneously obtains purer cryogenic gas at last.Gas through over cooling passes through pressure buffer chamber, charges into air bag by exhausr port.Among the present invention, whole housing is designed to reusable structure, and case material can be selected steel or other high-strength light alloy material for use.
The invention has the beneficial effects as follows:
(1) gas results from the chemical reaction of medicament self.Gas generant adopts the design of zero oxygen balance principle, and medicament itself contains combustible and oxidizer, can react generation gas under the condition of starvation.Because these characteristics, device can constitute the leak free container.Simultaneously the firework medicament gas production rate is big, and the volume efficiency (VE) height is easy to the miniaturization and the lightness of the system that realizes.
(2) the pyrotechnic gas generant is deposited with solid forms, and the safety in storing and transporting is good, and storage time is long, and ignition trigger is convenient and reliable.
(3) the present invention can be in different occasions, and as under water, provide a large amount of gases rapidly under the particular surroundings such as aerial and even space, this is that other plenum system such as Air compressor is difficult to realize.
Description of drawings
Fig. 1 gas generator structural representation.
Among the figure: 1. firing unit; 2. end cap; 3. shell; 4. combustion chamber (gas generant); 5. filter screen; 6. chemical cooling room (chemical coolant); 7. physics cooling room (physics cooling system conditioner); 8. pressure buffer chamber; 9. exhausr port.
The specific embodiment
In Fig. 1, firing unit (1), end cap (2), shell (3), combustion chamber (4), filter screen (5), chemical cooling room (6), physics cooling room (7), pressure buffer chamber (8), exhausr port (9) axial array are successively formed the pyrotechnic gas generator.Shell (3) is a cylinder type, and adopts welding to be connected the processing technology manufacturing that combines with pin, to improve its voltage endurance capability.Its end cap (2) adopts flange plate structure, passes through bolted connection with cylinder-like shell (3), is the whole air-tightness that guarantees gas generator, and the sealing of red copper High Temperature High Pressure packing seal is adopted in the junction.Firing unit (1) can adopt the general-duty electrical igniter, employing is threaded and is inserted into combustion chamber (4) bottom priming from the end cap axle center, make the interior gas generant of combustion chamber (4) do the aspect burning vertically as far as possible, thereby reduce aerogenesis speed and combustion chamber (4) internal pressure.
Combustion chamber (4), chemical cooling room (6) and physics cooling room (7) are arranged in series in cylinder type shell (3), separate with filter screen (5) between them, and filter screen is made up of multilayer 24 order corrosion-resistant steels and steel plate with holes.Filling pyrotechnic gas propellant can be selected sodium azide class gas generant (sodium azide 60～80%, oxide 20～40% add burning ratemodifier 3%, adhesive agent 3%) or other types of gases propellant for use in the combustion chamber (4).The gas that gas generant produces is nontoxic, and non-corrosiveness meets the atmosphere safety rate, and good with the compatibility of material around.The filling chemical coolant is selected granular zinc carbonate for use in the chemistry cooling room (6).Filling physics cooling system conditioner is selected spherical alundum (Al for use in the physics cooling room (7).Be provided with a pressure buffer chamber behind the physics cooling room (7), its length range is between 10～20cm.Exhausr port (9) adopts welding process to be connected diameter of outlet 10～20cm with shell (3).
Among the present invention, whole gas generator all is a leak free, all is added with the High Temperature High Pressure packing seal at the end face interface, so producer can wait safe and reliable work in the particular surroundings under water.
Among the present invention, whole housing is designed to reusable structure, after each the use generator body internal reaction thing residue is cleaned out, and it is promptly reusable to change chemical agent.Case material is selected steel or other high-strength light alloy material for use.
Among the present invention, the mean temperature of output gas is lower than 100 ℃.
Among the present invention, gas generator size and explosive load can be determined according to the desired gas amount.As be used for the deep water immersed object salvage, then depend on the weight of salvaging the degree of depth and being salvaged hypostasis.
Claims (4)
1, a kind of large charging pyrotechnics type gas generator is characterized in that utilizing the gas work of pyrotechnic gas generant burning generation, thereby gas charges into air bag hypostasis is floated from the bottom.
2, pyrotechnic gas generator according to claim 1, it is characterized in that comprising that combustion chamber, chemical cooling room, physics cooling room, firing unit, filter screen and shell etc. partly form, wherein combustion chamber, chemical cooling room and physics cooling room are axial array.Explosive load can reach hundreds of tens of kilograms that restrain, and gas production rate is tens of tens of cubic meters that rise to.
3, pyrotechnic gas generator according to claim 1 is characterized in that: the chemical coolant of filling is a granular carbonate in the chemical cooling room.
4, pyrotechnic gas generator according to claim 1 is characterized in that: physics cools off the spherical alundum (Al of physics cooling system conditioner of indoor filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100719576A CN1868788A (en) | 2005-05-27 | 2005-05-27 | Large charging pyrotechnics type gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100719576A CN1868788A (en) | 2005-05-27 | 2005-05-27 | Large charging pyrotechnics type gas generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1868788A true CN1868788A (en) | 2006-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100719576A Pending CN1868788A (en) | 2005-05-27 | 2005-05-27 | Large charging pyrotechnics type gas generator |
Country Status (1)
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| CN (1) | CN1868788A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733557A (en) * | 2019-03-18 | 2019-05-10 | 宁波振华救生设备有限公司 | A kind of low burn temperature atm number controllably slowly produces the gas generator of gas |
| CN110425941A (en) * | 2019-08-21 | 2019-11-08 | 浏阳新艺术烟花制造有限公司 | A kind of display shell float effect part |
| CN110466802A (en) * | 2019-07-25 | 2019-11-19 | 北京理工大学 | Flexible cabin and spacecraft |
| CN110530605A (en) * | 2019-08-23 | 2019-12-03 | 南京理工大学 | A kind of submarine navigation device exhaust experimental provision |
| CN112525016A (en) * | 2020-12-22 | 2021-03-19 | 湖北航天化学技术研究所 | Gas generating device and driving device |
| CN112523895A (en) * | 2020-11-30 | 2021-03-19 | 湖北三江航天红林探控有限公司 | Novel gas generator and inflation test method thereof |
| CN117068401A (en) * | 2023-08-22 | 2023-11-17 | 北京理工大学 | Hard air bag gas generator |
-
2005
- 2005-05-27 CN CNA2005100719576A patent/CN1868788A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733557A (en) * | 2019-03-18 | 2019-05-10 | 宁波振华救生设备有限公司 | A kind of low burn temperature atm number controllably slowly produces the gas generator of gas |
| CN110466802A (en) * | 2019-07-25 | 2019-11-19 | 北京理工大学 | Flexible cabin and spacecraft |
| CN110425941A (en) * | 2019-08-21 | 2019-11-08 | 浏阳新艺术烟花制造有限公司 | A kind of display shell float effect part |
| CN110530605A (en) * | 2019-08-23 | 2019-12-03 | 南京理工大学 | A kind of submarine navigation device exhaust experimental provision |
| CN110530605B (en) * | 2019-08-23 | 2021-07-13 | 南京理工大学 | Underwater vehicle exhaust experimental device |
| CN112523895A (en) * | 2020-11-30 | 2021-03-19 | 湖北三江航天红林探控有限公司 | Novel gas generator and inflation test method thereof |
| CN112523895B (en) * | 2020-11-30 | 2022-04-01 | 湖北三江航天红林探控有限公司 | Gas generator and inflation test method thereof |
| CN112525016A (en) * | 2020-12-22 | 2021-03-19 | 湖北航天化学技术研究所 | Gas generating device and driving device |
| CN117068401A (en) * | 2023-08-22 | 2023-11-17 | 北京理工大学 | Hard air bag gas generator |
| CN117068401B (en) * | 2023-08-22 | 2024-05-17 | 北京理工大学 | Hard air bag gas generator |
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