CN215939326U - Gunpowder gas cooling device - Google Patents
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- CN215939326U CN215939326U CN202121824550.7U CN202121824550U CN215939326U CN 215939326 U CN215939326 U CN 215939326U CN 202121824550 U CN202121824550 U CN 202121824550U CN 215939326 U CN215939326 U CN 215939326U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/14—Thermal energy storage
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Abstract
Gunpowder gas cooling device includes: the device comprises a deposition ring, a blocking piece, a primary cooling part, a secondary cooling part, a cooling assembly, a filtering assembly and a filtering plate assembly; the primary cooling part and the secondary cooling part are sequentially arranged from inside to outside along the radial direction to form a multilayer cavity; high-temperature gas is sprayed into the innermost layer cavity through the blocking piece, sequentially flows through each layer of cavity from inside to outside and then flows out through the filter plate assembly; a plurality of cooling assemblies and filtering assemblies are axially arranged in each layer of cavity at intervals, so that the cooling and filtering efficiency of high-temperature fuel gas is improved; a plurality of annular deposition grooves are formed in the deposition ring corresponding to the turning and reversing positions of the fuel gas flow and used for collecting solid particles deposited in the fuel gas due to cooling. The invention solves the problems that the gunpowder gas cooling device has large structure size, the space and weight ratio is far more than 1, the temperature of the cooled gas is not low enough, the gas is not clean enough generally at 300-500 ℃, and the gas can not meet the requirement of repeated use of precision equipment such as valves, mechanisms and the like.
Description
Technical Field
The invention relates to a gunpowder gas cooling device, which is suitable for filtering and cooling gunpowder gas and is used for a thrust adjusting mechanism of a carrier rocket engine, an underwater weapon suspension air bag and the like.
Background
The gunpowder and fuel gas generator has the advantages of high reliability, quick gas filling, long-term gas filling, strong environmental adaptability and the like, and is widely used for various types of weapons, flying missile wing unfolding, military camouflage inflating false targets, shrapnel throwing, actuating mechanism fuel gas power, air bag dragging suspension and the like. The application fields thereof are generally divided into two main categories: one is the work class and the other is the inflation class. The prior power-doing gas generator has low requirement on the temperature of a gas outlet (the general requirement is not more than 500 ℃), but along with the upgrading of weapon technical and tactical indexes and the popularization and application of non-metal composite materials, higher indexes are provided for the temperature and the cleanliness of gas output by the gas generator, the temperature of the gas is not more than 200 ℃, liquid and solid residues are not allowed to exist in the gas, the cleanliness of the gas can meet the requirement of repeated use of an actuating mechanism for many times, the traditional fire-chemical gas generator can not meet the requirement of direct use, a plurality of companies or colleges and universities have developed research on the cooling technology of the gunpowder gas at home and abroad, but key technical problems of attainment of the level of technical and technical indexes still exist:
1) the space of the cooling device and the charging structure of the gas generator is large, and the cost performance is not high;
2) the cooling effect is limited by only adopting a complex gas channel (such as a labyrinth type, a spiral type and the like), and the gas cleanliness is poor;
3) the corundum sand filling and other filtering cooling methods are adopted, stable and accurate control of the pressure of output gas is difficult, the pressure difference of the output gas is large, the quality of a cooling device is large, the cleanliness of the gas is influenced by ultrafine sand grains in the corundum sand, and the reuse requirements of precision valves, mechanisms and the like are not met.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the gunpowder gas cooling device solves the problems that the gunpowder gas cooling device is large in structural size, the space and weight ratio is far greater than 1, the temperature of the cooled gas is not low enough, the temperature is generally 300-500 ℃, the gas is not clean enough, and the repeated use of precision equipment such as valves and mechanisms cannot be met.
The technical scheme of the invention is as follows:
a pyrotechnic gas cooling device comprising: the device comprises a deposition ring, a blocking piece, a primary cooling part, a secondary cooling part, a cooling assembly, a filtering assembly and a filtering plate assembly;
the primary cooling part and the secondary cooling part are sequentially arranged from inside to outside along the radial direction to form a multilayer cavity;
high-temperature gas is sprayed into the innermost layer cavity through the blocking piece, sequentially flows through each layer of cavity from inside to outside and then flows out through the filter plate assembly;
a plurality of cooling assemblies and filtering assemblies are axially arranged in each layer of cavity at intervals, so that the cooling and filtering efficiency of high-temperature fuel gas is improved;
a plurality of annular deposition grooves are formed in the deposition ring corresponding to the turning and reversing positions of the fuel gas flow and used for collecting solid particles deposited in the fuel gas due to cooling.
Optionally, the flow directions of the high-temperature fuel gas in the two adjacent layer cavities are opposite.
Optionally, in an initial state, the blocking piece blocks a gas flow passage between the gas generator and the inner cavity; the blocking piece is sprayed by the pressure of high-temperature fuel gas, so that a communicated gas flow passage is formed between the outlet of the fuel gas generator and the inner-layer cavity.
Optionally, the end face of the cylindrical structure close to one side of the nozzle pipe is etched with weakening grooves, and the weakening grooves can be sprayed by the pressure of high-temperature fuel gas to form a channel.
Optionally, in an initial state, the blocking piece blocks a gas flow passage between the gas generator and the inner cavity; the explosive is used for detonating to open the blocking piece, so that a communicated gas flow passage is formed between the outlet of the gas generator and the inner-layer cavity.
Optionally, the cooling assembly is of a honeycomb porous structure, and a plurality of through holes arrayed in the radial direction are machined in the circumferential direction; the filter components are ceramic particles.
Optionally, the primary cooling component comprises: the inner cylinder, the middle cylinder and the high-temperature baffle plate;
one end of the inner cylinder is connected with the blocking piece, and the other end of the inner cylinder is propped against the high-temperature baffle;
the middle cylinder is sleeved outside the inner cylinder, so that an inner-layer cavity is formed between the middle cylinder and the inner cylinder; the other end of the inner cylinder is provided with a plurality of through holes in the circumferential direction.
Optionally, the secondary cooling component comprises: an outer cylinder;
the outer cylinder is sleeved outside the middle cylinder, and an outer-layer cavity is formed between the outer cylinder and the middle cylinder;
the deposition ring is arranged on one side of the gas generator, and the middle cylinder is not contacted with the deposition ring, so that the outer-layer cavity is communicated with the inner-layer cavity.
Optionally, the filter plate assembly comprises: a filter screen, a backing ring and a pressure ring;
a plurality of through holes are arrayed on the surface of the pressure ring; the mesh number of the filter screen is not less than 400 meshes;
the backing ring is provided with a central through hole, the backing ring and the pressing ring are sequentially arranged along the axial direction, and the pressing ring faces one side of the outer barrel outlet.
Optionally, laser welding seals are used between the deposition ring and the outer barrel, between the patch and the deposition ring, and between the outer barrel and the gas generator.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts a nested radial multilayer cavity structure to realize the lengthening of a gas channel, adopts ceramic particles with accurately controllable granularity and an aluminum-magnesium alloy honeycomb heat accumulator to realize the cooling and filtering of gas, has small space and weight ratio (not more than 1), is easy to control the performance and quality by cooling capacity and quantitative design calculation, does not introduce other impurities while filtering and cooling the gas, and meets the repeated use requirements of precision valves, mechanisms and the like by gas cleanliness. The product has the advantages of novel structural form, materials and working principle, excellent performance after the use and the evaluation of users, and advanced performance or not lower than that of similar products at home and abroad.
Drawings
FIG. 1 is a schematic diagram of the structure and operation of the present invention;
FIG. 2 is a schematic view of a laser welded seal of the deposition ring to the outer barrel of the present invention;
FIG. 3 is a schematic view of a laser welded seal of a patch of the present invention with a deposition ring;
FIG. 4 is a schematic diagram of a blasting opening structure of a detonator support plug of the present invention;
FIG. 5 is a schematic view of a structure of a blocking piece for blasting a detonator according to the present invention;
FIG. 6 is a schematic structural view of a back porous partial pressure bearing positive low pressure burst open tab of the present invention;
FIG. 7 is a schematic view of a porous partial pressure patch according to the present invention;
FIG. 8 is a schematic view of a back pressure support according to the present invention;
FIG. 9 is a schematic view of a screen assembly according to the present invention;
FIG. 10 is a schematic view of the connection interface of the present invention to a gasifier.
Detailed Description
The invention provides a gunpowder gas cooling device which is arranged at the outlet of a traditional gas generator, realizes lengthening of a gas channel through a multilayer sleeving structure, adopts staggered distribution of ceramic particles and heat accumulators in the gas channel to realize gradual and sufficient cooling and filtration of gas, and finally realizes the requirements of low temperature and cleanliness of output gas. The space and weight ratio of the cooling device to the charging structure of the fuel gas generator is not more than 1, the product has compact structure, high space utilization rate and strong environmental adaptability, the temperature of the fuel gas at 2000 ℃ can be reduced to be below 100 ℃ by increasing the thickness and size of the heat accumulator, the filling amount of ceramic particles, the grade number of the heat absorption and cooling structure layer and the total heat capacity, and the cleanliness of the fuel gas meets the requirements of no smoke, no color, no liquid and no solid residues and meets the repeated use requirements of precision equipment such as valves, mechanisms and the like.
A pyrotechnic gas cooling device comprising: deposition ring 4, closure plate 11, primary cooling part, secondary cooling part, cooling component, filtering component and filtering plate subassembly. The primary cooling part and the secondary cooling part are sequentially arranged from inside to outside along the radial direction to form a multilayer cavity; high-temperature gas is sprayed into the innermost layer cavity through the blocking piece 11, sequentially flows through each layer of cavity from inside to outside and then flows out through the filter plate assembly; a plurality of cooling assemblies and filtering assemblies are axially arranged in each layer of cavity at intervals, so that the cooling and filtering efficiency of high-temperature fuel gas is improved; a plurality of annular deposition grooves are formed in the deposition ring 4 corresponding to the turning and reversing positions of the fuel gas flow and used for collecting solid particles deposited in the fuel gas due to cooling.
The flow directions of the high-temperature fuel gas in the cavities of the two adjacent layers are opposite.
In the initial state, the blocking piece 11 blocks the gas flow passage between the gas generator 17 and the inner cavity; the blocking piece 11 is blown open by the pressure of high-temperature fuel gas, so that a communicated gas flow passage is formed between the outlet of the fuel gas generator 17 and the inner-layer cavity.
The end face of the cylinder structure close to one side of the spray pipe 12 is etched with weakening grooves which can be sprayed by the pressure of high-temperature fuel gas to form a channel. The blocking piece 13 can also be supported by a back pressure support 16, a rupture weakening groove is formed in the surface, facing the gas inlet, of the blocking piece 13 through laser etching, a gas channel is opened by means of output pressure generated when the gas generator is started and breaking the blocking piece 13 along the rupture weakening groove, and the back pressure support 16 is made of a tungsten copper (W-10Cu) material and is of a porous structure.
In the initial state, the blocking piece 11 blocks the gas flow passage between the gas generator 17 and the inner cavity; the blocking piece 11 is opened by initiating explosive device to form a gas flow passage between the outlet of the gas generator 17 and the inner cavity. The blocking piece 13 is supported by the small detonator 14 and the pressing block 15 in a tight jacking mode, so that the reverse high pressure of the fuel gas outlet direction is realized in a non-working state, the small detonator 14 is exploded by gunpowder fuel gas flame to burst the blocking piece 13 and quickly open a fuel gas channel during working, the pressing block 15 is made of a PEEK (polyether-ether-ketone) non-metal material, and the fuel gas channel is gasified in high-temperature fuel gas after the blocking piece 13 is exploded by the small detonator 14 and the fuel gas channel is opened, so that normal fuel gas circulation is not influenced.
The cooling assembly is of a honeycomb porous structure, and a plurality of through holes arrayed along the radial direction are machined in the circumferential direction; the method comprises the following steps: inner heat accumulator 6, cross layer heat accumulator 7 and outer heat accumulator 8, inner heat accumulator 6, cross layer heat accumulator 7 and outer heat accumulator 8 all have a plurality of through-holes along axial processing, and a plurality of through-holes are along radial array. The filter components are ceramic particles. The inner heat accumulator 6 is positioned in the cavity between the inner barrel 3 and the middle barrel 2, the cross-layer heat accumulator 7 is positioned at the opening part of the middle barrel 2, the inner and outer multi-layer cavities are crossed, the outer heat accumulator 8 is positioned in the cavity between the outer barrel 1 and the middle barrel 2, and the space between the heat accumulators is filled with ceramic particles 9.
The inner layer heat accumulator 6, the cross-layer heat accumulator 7 and the outer layer heat accumulator 8 are made of aluminum magnesium alloy into a honeycomb porous structure, so that the contact area of fuel gas is increased when the fuel gas flows through the heat accumulators, and the heat exchange rate is improved; the ceramic grains 9 are Al with the granularity of phi 2-phi 3mm2O3Ceramic (Al)2O3The content is not lower than 99 percent), and the ceramic particles 9 and the heat accumulators are arranged in a staggered manner to increase the cooling and filtering efficiency of the fuel gas;
the primary cooling component includes: an inner barrel 3, a middle barrel 2 and a high-temperature baffle 5;
one end of the inner cylinder 3 is connected with the plugging piece 11, and the other end of the inner cylinder 3 is propped against the high-temperature baffle 5; the high-temperature baffle 5 is made of tungsten copper (W-10Cu) materials so as to resist ablation and scouring of high-temperature gunpowder fuel gas. The high-temperature baffle 5 is positioned at the bottom of the inner barrel 3 and the middle barrel 2 and is used for turning the high-temperature gunpowder gas entering the inner barrel 3 to enter the cooling filtering channel.
The middle cylinder 2 is sleeved outside the inner cylinder 3, so that an inner-layer cavity is formed between the middle cylinder 2 and the inner cylinder 3; the other end of the inner cylinder 3 is circumferentially provided with a plurality of through holes.
The secondary cooling component includes: an outer cylinder 1;
the outer cylinder 1 is sleeved outside the middle cylinder 2, and an outer-layer cavity is formed between the outer cylinder 1 and the middle cylinder 2;
the deposition ring 4 is arranged on one side of the fuel gas generator 17, and the middle cylinder 2 is not contacted with the deposition ring 4, so that the outer-layer cavity is communicated with the inner-layer cavity.
The filter plate assembly includes: a filter screen 12, a backing ring 10 and a compression ring 11;
a plurality of through holes are arrayed on the surface of the pressure ring 11; the mesh number of the filter screen 12 is not less than 400 meshes; the filter screen 12 is composed of a titanium alloy wire or stainless steel wire multilayer filter screen with the mesh of not less than 400, and is used for finally filtering the cooled fuel gas; the gas cleanliness filtered by the cooling device meets the requirements of no smoke and no color.
Backing ring 10 processing has central through-hole, and backing ring 10, backing ring 10 and clamping ring 11 set gradually along the axial, and clamping ring 11 is towards 1 export one side of urceolus.
The outer cylinder 1, the middle cylinder 2, the inner cylinder 3, the deposition ring 4 and the blocking piece 13 are made of titanium alloy materials, and laser welding sealing is adopted between the deposition ring 4 and the outer cylinder 1, between the blocking piece 13 and the deposition ring 4 and between the outer cylinder 1 and the fuel gas generator 17. Is resistant to corrosion of strong oxidants such as unsymmetrical dimethyltibia and the like.
The blocking piece 13 and the deposition ring 4 are welded together by laser, and are used for completely sealing and isolating high-temperature fuel gas and low-temperature fuel gas under a non-working state.
The gunpowder gas cooling device is arranged at the outlet of the gas generator 17 and is connected with the gas generator by threads and sealed by a sealing ring 18, and the locking and the strengthening sealing can also be realized by laser welding. The high-temperature gas output by the gas generator is sprayed into the innermost layer cavity, sequentially flows through the heat accumulators and the ceramic particle structures in each layer cavity from inside to outside, and finally flows out through the filter structure of the filter screen 12; the flow directions of the high-temperature fuel gas in the cavities of the two adjacent layers are opposite.
The invention utilizes the nested structure to form a multilayer cavity, so as to change the flow direction of the fuel gas for many times, increase the length of a fuel gas channel and the contact area of a heat absorption filter structure and the fuel gas, and ensure that high-temperature particles in the fuel gas are gradually cooled and deposited in the process that high-temperature gunpowder fuel gas flows through a heat accumulator, ceramic particles, a deposition ring and other structures, thereby achieving the function of cooling the fuel gas.
The multilayer cavity gas filtering and cooling structure can reduce the temperature of gas up to 2000 ℃ to be not more than 100 ℃ by increasing the thickness size of a heat accumulator, the filling amount of ceramic particles, the grade of a heat absorption and cooling structure layer and the total heat capacity under the condition that the space and the weight ratio of a cooling device to a charging structure of a gas generator are not more than 1.
The gunpowder gas cooling device is arranged at the outlet of the gas generator 17 and is connected with the gas generator by threads, and a sealing ring 18 is used for sealing, and the locking and the strengthening sealing can also be realized by laser welding.
Examples
As shown in fig. 1, a gunpowder gas cooling device includes: the device comprises an outer cylinder 1, a middle cylinder 2, an inner cylinder 3, a deposition ring 4, a high-temperature baffle 5, an inner-layer heat accumulator 6, a cross-layer heat accumulator 7, an outer-layer heat accumulator 8, ceramic particles 9, a backing ring 10, a compression ring 11, a filter screen 12, a blocking piece 13, a small detonator 14 and a pressing block 15.
The inner cylinder 3, the middle cylinder 2 and the outer cylinder 1 form a gas channel of a multilayer cavity from inside to outside along the radial direction; the high-temperature baffle 5 is positioned at the bottom of the inner cylinder 3 and the middle cylinder 2; the inner heat accumulator 6 is positioned in the cavity between the inner barrel 3 and the middle barrel 2, the cross-layer heat accumulator 7 is positioned at the opening part of the middle barrel 2, the inner and outer layers of cavities are crossed, the outer heat accumulator 8 is positioned in the cavity between the outer barrel 1 and the middle barrel 2, and the space between the heat accumulators is filled with ceramic particles 9.
The outer cylinder 1, the middle cylinder 2, the inner cylinder 3, the deposition ring 4 and the blocking piece 13 are made of titanium alloy materials; the high-temperature baffle 5 is made of tungsten copper (W-10Cu) material; the inner layer heat accumulator 6, the cross-layer heat accumulator 7 and the outer layer heat accumulator 8 are made into a honeycomb porous structure by aluminum magnesium alloy; the ceramic particles 9 are selected from Al with the particle size of phi 2-phi 3mm2O3Al content of not less than 99%2O3A ceramic.
The deposition ring 4 is positioned at the mouth part of the outer cylinder 1, as shown in fig. 2, the connection and sealing of the deposition ring and the outer cylinder are realized by laser welding at the position shown in the figure, and the deposition ring 4 is provided with a plurality of annular deposition grooves at the turning and reversing position of the fuel gas flow, so as to collect solid substances deposited in the fuel gas due to temperature reduction and cooling.
The filter screen 12 is buckled and pressed together through the backing ring 10 and the press ring 11 and is positioned in front of the fuel gas outlet.
As shown in fig. 3, the patch 13 is attached to the deposition ring 4 and the seam between the two is laser welded to secure and seal the patch 13.
As the diameter d of the gas generator outlet throat0When the diameter is not more than phi 4mm, the small detonator 14 can be used for supporting the blocking piece 13 to realize the rapid opening of non-working back pressure and working low pressure, as shown in figure 4, namely the small detonator 14 is arranged below the blocking piece 13, one end of the small detonator 14 with a silk pad faces to a gas inlet, the pressing block 15 is in threaded connection with the deposition ring 4 to tightly push the small detonator 14, the pressing block 15 is made of PEEK non-metallic materials, and the structure of the blocking piece 13 is shown in figure 5.
As the diameter d of the gas generator outlet throat0When the diameter is larger than 4mm, the back pressure is assembled below the blocking piece 13The support 18 supports, as shown in fig. 6, the blocking piece 13 is structured as shown in fig. 7, a rupture weakening groove is formed on one side, facing the gas inlet, of the blocking piece 13 through laser etching, the back pressure support 18 is structured as shown in fig. 8, a tungsten-copper (W-10Cu) material is adopted, the back pressure support 18 is of a porous structure, and the total ventilation area of the back pressure support 18 and the blocking piece 13 is not less than 4 times of the throat diameter flux of the outlet of the gas generator. Path d after opening of the closure2Opening pressure P of plug sheet design1The tensile strength sigma of the blocking sheet material and the thickness t of the blocking sheet are calculated by the formula
Each through hole diameter d of the back pressure support 181The size and the number n of the through holes are designed by the back pressure index P of the plug sheetaTensile strength sigma of blocking sheet material, thickness t of blocking sheet and throat diameter d of gas generator0Or the path d after the closure sheet is opened2Is calculated by the formula
Or
As shown in fig. 9, the filter screen 12 is pressed and fixed by a backing ring 10 and a pressing ring 11, and is arranged in front of the gas outlet of the cooling device, and the filter screen 12 is formed by a titanium alloy wire or a stainless steel wire multilayer filter screen with a diameter not smaller than 400 meshes.
As shown in fig. 10, the powder gas cooling device is connected with the gas generator 17 by screw thread, and the sealing ring 18 is sealed, and the anti-loose and reinforced sealing can be realized by laser welding.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (10)
1. A pyrotechnic gas cooling device, comprising: the device comprises a deposition ring (4), a blocking piece (11), a primary cooling part, a secondary cooling part, a cooling assembly, a filtering assembly and a filtering plate assembly;
the primary cooling part and the secondary cooling part are sequentially arranged from inside to outside along the radial direction to form a multilayer cavity;
high-temperature fuel gas is sprayed into the innermost layer cavity through the blocking piece (11), sequentially flows through each layer of cavity from inside to outside and then flows out through the filter plate assembly;
a plurality of cooling assemblies and filtering assemblies are axially arranged in each layer of cavity at intervals, so that the cooling and filtering efficiency of high-temperature fuel gas is improved;
the deposition ring (4) is provided with a plurality of annular deposition grooves corresponding to the turning and reversing positions of the fuel gas flow, and the annular deposition grooves are used for collecting solid particles deposited in the fuel gas due to cooling.
2. A powder gas cooling device as claimed in claim 1, wherein the flow directions of the high temperature gas in the chambers of two adjacent layers are opposite.
3. A pyrotechnic gas cooling device as claimed in claim 2 characterised in that, in the initial state, the blocking piece (11) blocks the gas flow path between the gas generator (17) and the inner chamber; the blocking piece (11) is sprayed by the pressure of high-temperature fuel gas, so that a communicated gas flow passage is formed between the outlet of the fuel gas generator (17) and the inner-layer cavity.
4. A powder gas cooling device according to claim 3, characterised in that the end surface of the barrel structure on the side close to the nozzle tube (12) is etched with weakening grooves which can be blown open by the pressure of the hot gas to form channels.
5. A pyrotechnic gas cooling device as claimed in claim 2 characterised in that, in the initial state, the blocking piece (11) blocks the gas flow path between the gas generator (17) and the inner chamber; the blocking piece (11) is opened by initiating explosive device to form a communicated gas flow passage between the outlet of the gas generator (17) and the inner cavity.
6. A gunpowder gas cooling device as claimed in any one of claims 3 to 5, wherein the cooling component is of a honeycomb porous structure, and a plurality of through holes are formed in a radial array in the circumferential direction; the filter components are ceramic particles.
7. A pyrotechnic gas cooling device as claimed in claim 6 wherein the primary cooling element comprises: the inner cylinder (3), the middle cylinder (2) and the high-temperature baffle (5);
one end of the inner cylinder (3) is connected with the blocking piece (11), and the other end of the inner cylinder (3) is propped against the high-temperature baffle (5);
the middle cylinder (2) is sleeved outside the inner cylinder (3), so that an inner-layer cavity is formed between the middle cylinder (2) and the inner cylinder (3); the other end of the inner cylinder (3) is provided with a plurality of through holes in the circumferential direction.
8. A pyrotechnic gas cooling device as claimed in claim 7 wherein the secondary cooling means comprises: an outer cylinder (1);
the outer cylinder (1) is sleeved outside the middle cylinder (2), and an outer-layer cavity is formed between the outer cylinder (1) and the middle cylinder (2);
the deposition ring (4) is arranged on one side of the fuel gas generator (17), and the middle cylinder (2) is not contacted with the deposition ring (4), so that the outer-layer cavity is communicated with the inner-layer cavity.
9. A pyrotechnic gas cooling device as claimed in claim 8 wherein the filter panel assembly comprises: a filter screen (12), a backing ring (10) and a press ring (11);
a plurality of through holes are arrayed on the surface of the pressure ring (11); the mesh number of the filter screen (12) is not less than 400 meshes;
backing ring (10) processing has central through-hole, and backing ring (10), backing ring (10) and clamping ring (11) set gradually along the axial, and clamping ring (11) export one side towards urceolus (1).
10. A powder gas cooling device according to claim 9, characterized in that laser welding seals are used between the deposition ring (4) and the outer barrel (1), between the closure plate (13) and the deposition ring (4), and between the outer barrel (1) and the gas generator (17).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121824550.7U CN215939326U (en) | 2021-08-05 | 2021-08-05 | Gunpowder gas cooling device |
| PCT/CN2021/112385 WO2022042330A1 (en) | 2020-08-27 | 2021-08-13 | Gunpowder gas cooling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121824550.7U CN215939326U (en) | 2021-08-05 | 2021-08-05 | Gunpowder gas cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215939326U true CN215939326U (en) | 2022-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121824550.7U Active CN215939326U (en) | 2020-08-27 | 2021-08-05 | Gunpowder gas cooling device |
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| Country | Link |
|---|---|
| CN (1) | CN215939326U (en) |
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2021
- 2021-08-05 CN CN202121824550.7U patent/CN215939326U/en active Active
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