CN110282607B - Laminated nitrogen generator - Google Patents
Laminated nitrogen generator Download PDFInfo
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- CN110282607B CN110282607B CN201910590082.2A CN201910590082A CN110282607B CN 110282607 B CN110282607 B CN 110282607B CN 201910590082 A CN201910590082 A CN 201910590082A CN 110282607 B CN110282607 B CN 110282607B
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- nitrogen
- generator
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- tablets
- explosive column
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- 150000002829 nitrogen Chemical class 0.000 title claims abstract description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 280
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 118
- 239000002360 explosive Substances 0.000 claims abstract description 73
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 44
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 238000002485 combustion reaction Methods 0.000 claims description 26
- 239000007789 gas Substances 0.000 claims description 21
- 239000012774 insulation material Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 8
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 claims description 6
- 230000001788 irregular Effects 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 239000004964 aerogel Substances 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000000112 cooling gas Substances 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- 229910052902 vermiculite Inorganic materials 0.000 claims description 2
- 235000019354 vermiculite Nutrition 0.000 claims description 2
- 239000010455 vermiculite Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 51
- 239000003814 drug Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000007580 dry-mixing Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000001540 azides Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/02—Preparation of nitrogen
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention mainly provides a laminated nitrogen generator. The invention mainly comprises the steps of pressing a nitrogen gas generating agent formula into a curved disc-shaped tablet (hereinafter referred to as tablet), stacking the tablet through a connecting explosive column to form a specific shape, and continuously and orderly burning to release nitrogen. In order to ensure that the assembled tablets burn continuously and orderly without causing cross-ignition, a certain gap is required between each layer of tablets, and the gap can be adjusted in height by connecting the grains. Because the tablet is assembled in a laminated way, the tablet has small volume and light weight, and can ensure that nitrogen is generated for a long time.
Description
Technical Field
The invention relates to a laminated nitrogen generator. And more particularly to nitrogen generators formed by stacking a plurality of connected grains using a plurality of tablets pressed into a curved disc shape.
Technical Field
The nitrogen generator prepared by utilizing the principle of pyrolysis of nitrogen generating agent mainly comprises a starting device, nitrogen generating medicine blocks and nitrogen filtering materials. The heat generated by the starting device can decompose the medicine blocks, release nitrogen, and the nitrogen is discharged from the outlet after being purified by the internal filtering material.
The grain of the traditional pressed grain type solid nitrogen generator is a single linear grain or a curved plane grain, for example, a bendable oxygen candle generator described in patent CN205820891U is characterized in that a curved oxygen candle is utilized to continuously connect a main body linear oxygen candle to form a flat layer grain, so that the purpose of expanding the length of the oxygen candle is achieved. Whether it be a single linear grain or a flat layer grain, these grains are very short in air supply time limited by the extended plane dimensions. For example, the generator made of a single solid nitrogen charge typically has a maximum operating time of 20 minutes, and even if it is made into a flat-layer curved charge as described in patent CN205820891U, it is difficult to double the operating time in the case of a portable human body. The space utilization is not high, and the phenomenon that the grain is too high and too long easily occurs, which is unfavorable for miniaturization after the generator is assembled.
Disclosure of Invention
The invention aims to provide a laminated nitrogen generator, which can realize a multi-layer three-dimensional solid nitrogen gas generating agent structure, and a three-dimensional structure explosive column can more utilize space, so that the explosive column is prevented from being too high and too long, and the miniaturization of the explosive column after the generator is assembled is facilitated.
The technical scheme of the invention is as follows:
a laminated nitrogen generator comprises a generator shell (1) and a generator upper cover (13), wherein the generator upper cover (13) is fixed on the generator shell (1), and a part in a cavity of the generator shell (1) is used as a combustion chamber; three round holes are formed in the generator upper cover (13) and are respectively used for installing a flow regulating valve of the ignition device, the pressure relief valve (14) and the air outlet (15);
the nitrogen gas tablet (5), connect grain (6) and insulating material (8) are packed in the combustion chamber, and a plurality of nitrogen gas tablets (5) one deck stack up, and the interval between adjacent nitrogen gas tablet (5) is the same, links together all nitrogen gas tablet (5) through connecting grain (6), and insulating material (8) are arranged in the interval between adjacent nitrogen gas tablet (5) for prevent nitrogen gas tablet (5) cross burning.
The connection mode of the nitrogen tablet (5) and the connecting explosive column (6) is specifically as follows:
the connecting explosive column (6) connects the adjacent two layers of nitrogen tablets (5) head to head or tail to tail, and all the nitrogen tablets (5) are connected in series by stacking layer by layer; simultaneously, during assembly, the nitrogen tablets (5) are tightly contacted and connected with the connecting explosive column (6) by compacting the heat insulation material (8).
The spacing between adjacent nitrogen gas tablets (5) is adjusted by connecting the heights of the grains (6).
The nitrogen tablet (5) is a spiral flat layer structure which diverges outwards from the center or an M-shaped flat layer structure which is folded and bent from one end to the other end.
The nitrogen gas tablet (5) is close to being equipped with first recess on the lateral wall of terminal surface, two surfaces that are on the back of each other on connecting grain (6) are equipped with a first arch respectively, connecting grain (6) with nitrogen gas tablet (5) are through first recess and first protruding cooperation is connected.
The nitrogen tablet (5) and the connecting explosive column (6) are made of the same material, and sodium azide is used as a main component; the cross section of the nitrogen tablet (5) is round, rectangular, square, triangular, trapezoid or other irregular shapes; the connecting explosive column (6) is in a cylindrical shape, a rectangle, a square, a triangle, a trapezoid or other irregular shapes; the connecting explosive column (6) is provided with holes or is not provided with holes.
The ignition device comprises an ignition tool fixing piece (11) and an ignition tool (16);
the igniter (16) and the igniter fixing piece (11) penetrate through the reserved mounting hole of the generator upper cover (13) and are welded and fixed, and the igniter fixing piece (11) is cylindrical and is made into a stepped hole form; the igniter fixing piece (11) is used for fixing the uppermost connecting explosive column (6) and limiting the upward and downward movement of the uppermost explosive column (6); meanwhile, the igniter fixing piece (11) is also used for fixing the igniter (16), and a limited semi-closed space is provided for igniting the connecting explosive column (6) by the igniter (16).
The nitrogen generator also comprises a filtering and cooling device and a supporting and positioning device;
the filtering and cooling device comprises a filter layer (10), a lower gasket (9) and an upper gasket (12);
the lower gasket (9) is welded on the inner wall of the generator shell (1), and a plurality of air outlet holes are formed in the bottom of the lower gasket (9) and used for discharging gas generated by combustion of the nitrogen gas generating agent; meanwhile, ceramic fiber cotton is padded on the lower gasket (9) to prevent the filter layer (10) from falling into the combustion chamber, and the lower gasket (9) is also used for fixing the uppermost nitrogen tablet (5) and limiting the uppermost nitrogen tablet (5) from moving up and down; the filter layer (10) is arranged between the upper gasket (12) and the lower gasket (9) and is used for purifying and cooling gas generated by the combustion of the nitrogen gas generating agent so as to discharge pure nitrogen; the nitrogen generating agent comprises a nitrogen tablet (5) and a connecting explosive column (6);
the supporting and positioning device realizes the fixed positioning of the nitrogen tablet (5) and the connecting explosive column (6), and reduces the relative shaking and vibration between the nitrogen tablet (5) and the connecting explosive column (6); the supporting and positioning device comprises a bottom plate (2), a supporting frame (3), a guiding side plate (4) and a positioning bracket (7);
the positioning bracket (7) and the guiding side plate (4) are welded on the bottom plate (2) according to the distribution of the nitrogen tablets (5), or are inserted on the bottom plate (2) provided with the slots, the positioning bracket (7) and the guiding side plate (4) position the nitrogen tablets (5) and the connecting explosive column (6), and meanwhile the guiding side plate (4) plays a guiding role on the supporting frame (3); the supporting frames (3) are arranged between each layer of nitrogen tablets (5) and are used for supporting each layer of nitrogen tablets (5).
The generator shell (1) is in a round-corner rectangular cylinder shape, a cuboid or a cube, the bottom is closed, and the upper opening is opened.
One or more ignition devices (16) in the ignition device are mechanical impact ignition devices or electronic ignition devices.
The heat insulation material (8) is of a loose porous structure and is used for keeping internal heat from dissipating and reducing the temperature of the shell, and the heat insulation material is made of vermiculite, ceramic aluminum fiber cotton or silicon nitride aerogel.
The pressure relief valve (14) is a spring type pressure relief valve and is used for pressure relief and unidirectional gas circulation, so that the excessive pressure in the shell of the generator caused by the combustion of the nitrogen tablet (5) under abnormal conditions or other unexpected conditions is prevented.
Furthermore, a method for generating nitrogen by using the laminated nitrogen generator is also provided, wherein an external trigger signal firstly triggers an ignition tool (16), then the ignition tool (16) ignites and connects with a grain (6), then the nitrogen tablet (5) and the grain (6) realize long-time nitrogen supply through orderly and continuous combustion, and the generated nitrogen is purified and cooled by a filter layer (10) to obtain pure nitrogen, and the pure nitrogen is discharged through an air outlet (15).
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention aims to provide a laminated nitrogen generator which has the advantages of light weight, small volume, capability of continuously providing nitrogen for a long time, little influence by temperature, long storage time, wide application range, no need of being made into high pressure resistance and the like.
(2) According to the nitrogen tablet-connecting explosive column structure, the tablets are made into the gas-producing explosive layers which are bent in a plane according to a certain rule, multiple gas-producing explosive layers are stacked, the multiple gas-producing explosive layers are connected in series through the connecting explosive columns between the two layers, after the head part of the outer tablet is ignited, the reaction of the first tablet is completed according to the bending rule of the tablet, then the reaction is transferred to the second tablet through the connecting explosive columns, and the like until all the layers complete the reaction.
(3) The shapes of the nitrogen tablets, the connecting explosive column, the positioning support and the supporting frame provided by the invention are simple to operate when the nitrogen tablets, the connecting explosive column, the positioning support and the supporting frame are assembled, and the nitrogen tablets, the connecting explosive column, the positioning support and the supporting frame can realize mass automatic production. During assembly, the integral framework can be firstly built, and the heat insulation material is refilled; the tablet may be filled with a heat insulating material.
(4) The nitrogen tablet-connecting explosive column assembly structure provided by the invention has the advantages of high continuous assembly performance, orderly and continuous low-flow combustion, good combustion continuity and high reliability.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a laminated nitrogen generator of the present invention;
FIG. 2 is a schematic structural view of another embodiment of the laminated nitrogen generator of the present invention;
Detailed Description
Various embodiments of the present invention will be described below with reference to the accompanying drawings.
The invention fully utilizes the special structure of the multilayer solid gas generating agent to save space and increase the structural characteristics of the dosage. The single-layer grain of the invention is pressed by one-step molding, thus simplifying the manufacturing process. Meanwhile, the invention can realize a multilayer three-dimensional solid nitrogen gas generating agent structure. The three-dimensional structure grain can more utilize space, avoid the too high overlength of grain, do benefit to miniaturization after the grain assembly generator.
A laminated nitrogen generator having the above properties of the present invention was realized in the following examples.
Example 1
FIG. 1 is a two-directional cross-sectional view of a generator showing one embodiment of a stacked nitrogen generator according to the present invention. As shown in the figure, the nitrogen generator comprises a generator shell 1 and a generator upper cover 13, wherein the generator shell 1 is in a round rectangular cylinder shape, the bottom is closed, the upper opening is open, and the inner part of the cavity is used as a combustion chamber and filled with nitrogen tablets 5 and heat insulation materials 8; the generator upper cover 13 is provided with three round holes for installing an ignition device, a pressure relief valve 14 and a flow regulating valve of the air outlet 15, and the generator upper cover 13 is welded on the generator shell 1. The ignition device is connected in welded form to the generator upper cover 13.
The nitrogen generator also includes an ignition device that includes an igniter mount 11 and an igniter 16. The nitrogen generator also comprises a nitrogen generating agent (namely a nitrogen tablet 5 and a connecting explosive column 6), the device can be triggered by an ignition device to generate nitrogen, and the nitrogen tablet 5 is in a spiral flat layer structure which diverges from the center outwards in the embodiment.
In addition, the nitrogen generator also comprises a filtering and cooling device (namely, a filtering layer 10, a lower gasket 9 and an upper gasket 12) and a supporting and positioning device (comprising a supporting frame 3, a guiding side plate 4 and a positioning bracket 7), wherein the filtering layer 10 is arranged between the upper gasket 12 and the lower gasket 9 and is used for purifying and cooling the gas generated by the combustion of the nitrogen gas generating agent, so that pure nitrogen is discharged. The supporting and positioning device realizes the fixed positioning of the nitrogen tablet 5 and the connecting explosive column 6, and reduces the shaking and vibration of the nitrogen tablet 5 and the connecting explosive column 6.
The igniter 16 in the igniter adopts a mechanical impact igniter, the igniter 16 and the igniter fixing piece 11 pass through the mounting hole reserved in the generator upper cover 13 and are welded and fixed, and meanwhile, the igniter fixing piece 11 and the igniter fixing piece 11 of the lower gasket 9 are made into a cylindrical shape and are made into a stepped hole shape, so that the igniter has two functions: the connecting explosive column 6 used for fixing the uppermost end limits the possibility of up-and-down movement of the uppermost explosive column 6, and provides reliability for orderly and continuously burning the nitrogen gas generating agent; and secondly, the ignition device 16 is used for fixing the ignition device 16, a limited semi-closed space is provided for the ignition device 16 to trigger the combustion of the nitrogen gas generating agent, and reliability is provided for the triggering of the nitrogen gas generating agent.
In this embodiment, since the nitrogen generating agent is packed in an assembled, stacked form within the combustion chamber of the generator, the layers leave sufficient space, which may be sized by the height of the connecting explosive column 6, to ensure that the nitrogen generating agent burns orderly and continuously. Meanwhile, in order to prevent the nitrogen tablets 5 from being broken or collapsed due to high temperature or the self weight of the nitrogen tablets 5 in the combustion process, the heat insulation material 8 is needed to support the whole nitrogen tablets 5, even the weight of the whole nitrogen gas generating agent, so that a guarantee is provided for continuous and orderly combustion of the nitrogen gas generating agent.
The connecting explosive column 6 connects the adjacent two layers of the nitrogen tablets 5 head to head or tail to tail, and all the nitrogen tablets 5 are stacked layer by layer to be connected in series; meanwhile, at the time of assembly, the nitrogen gas tablet 5 is closely contacted and connected with the connecting explosive column 6 by compacting the heat insulation material 8.
Specifically, the connection mode of the nitrogen gas tablet 5 and the connecting explosive column 6 is such that the first (end) of the first nitrogen gas tablet 5 is in close contact with the lower end face of the first connecting explosive column 6, the upper end face of the first connecting explosive column 6 is in close contact with the first (end) of the second nitrogen gas tablet 5, then the end (end) of the second nitrogen gas tablet 5 is in close contact with the lower end face of the second connecting explosive column 6, the upper end face of the second connecting explosive column 6 is connected with the end (end) of the third connecting explosive column 5, and so on, and the two connecting explosive columns are stacked layer by layer. Meanwhile, at the time of assembly, the nitrogen gas tablet 5 is brought into close contact with the connecting grain 6 by compacting the heat insulating material.
For example, the device comprises three layers of nitrogen tablets 5 and two connecting explosive columns 6, wherein the upper surface and the lower surface of the connecting explosive column 6 in a gap between the first layer and the second layer respectively correspond to the tail parts of the nitrogen tablets 5 of the first layer and the second layer, the tail parts of the two layers are connected, the upper surface and the lower surface of the connecting explosive column 6 in a gap between the second layer and the third layer respectively correspond to the head parts of the nitrogen tablets 5 of the second layer and the third layer, and the two layers of head parts are connected to realize the serial connection of the three layers of nitrogen tablets 5; with this, it can be circulated infinitely.
In the embodiment of the invention, the nitrogen tablet 5 is preferably a strip-shaped compressed gas-producing tablet with a constant cross section, and the cross section of the nitrogen tablet can be in a regular shape such as square, round, oval, triangle, trapezoid and the like, or in an irregular shape, and the nitrogen tablet is not limited by the invention; the connecting explosive column 6 can be square column, elliptic column, triangle column, trapezoid column and other structures; the gas generating agent used for pressing the gas generating medicine strip is solid nitrogen gas generating agent, and the gas generating agent formula takes azide as a main body, such as sodium azide and the like; the gas-producing medicine strip can be pressed by a wet method or a dry method, the dry method pressing forming process refers to a forming process of directly pressing by dry mixing of various raw materials, and generally the subsequent steps of drying and the like are needed, the wet method pressing forming process refers to a forming process of pressing by adding water after dry mixing of various raw materials, and the subsequent steps of drying and the like are needed, and equipment of the pressing forming process refers to an oil press, a rotary tablet press, a single-punch and multi-punch reciprocating tablet press.
Specifically, in the embodiment of the invention, the number of layers of the gas generating medicine layer can be determined according to the actual gas generating requirement, and the invention is not limited; the maximum length of the cross section of the nitrogen tablet is preferably more than 5mm and less than 50mm so as to ensure that the gas yield can reach the requirement of a single human body; the length of each layer of nitrogen tablets is not less than 5cm, and the total length of each layer of nitrogen tablets is 30 cm-1.5 m, so that the use time of the gas generating medicine can reach more than 40 min.
In an alternative embodiment, the side wall of the nitrogen gas tablet close to the end face is provided with a first groove, two opposite surfaces of the connecting explosive column 6 are respectively provided with a first protrusion, the connecting explosive column 6 and the nitrogen gas tablet are connected in a matched manner through the first groove and the first protrusions, namely, the first protrusions and the first grooves form a mortise and tenon structure, and the fixed connection of the first protrusions and the second protrusions is achieved. In this embodiment, the first groove may be square, circular, oval, triangular, trapezoid, or irregular. The method can realize effective combination of the two without an external supporting structure, and is favorable for weight reduction and space saving.
The filtering and cooling device in the embodiment consists of a filtering layer 10, a lower gasket 9 and an upper gasket 12, wherein the lower gasket 9 is welded on the inner wall of the generator shell 1, and a plurality of air outlet holes are formed in the bottom of the lower gasket 9 and used for discharging gas generated by combustion of a nitrogen gas generating agent; meanwhile, ceramic cellucotton is padded on the lower gasket 9 to prevent the filter layer 10 from falling into the combustion chamber, the lower gasket 9 is also used for fixing the uppermost nitrogen tablet 5, the possibility of up-and-down movement of the uppermost nitrogen tablet 5 is limited, and reliability is also provided for orderly and continuously burning the nitrogen gas generating agent. The filter layer 10 is arranged between the lower gasket 9 and the upper gasket 12 to remove harmful gases generated by the combustion of the nitrogen-producing tablets, and plays roles of purifying the gases and cooling the temperature.
The supporting and positioning device in the embodiment is composed of a bottom plate 2, a supporting frame 3, a guiding side plate 4 and a positioning bracket 7. The locating support 7 and the guiding side plate are welded on the bottom plate 2 or inserted on the bottom plate 2 provided with the slot, the supporting frame 3 is made in such a way as to ensure that the supporting frame 3 can only move up and down along the guiding side plate 4, and simultaneously, two supporting legs extending out of the supporting frame 3 are used for supporting and installing the nitrogen tablet 5, thereby providing convenience for installing the nitrogen tablet 5 and reducing the shaking of the nitrogen tablet 5. In addition, the positioning bracket is made into a necking form, firstly, the nitrogen gas tablet 5 and the connecting explosive column 6 are positioned and fixed, and secondly, a guiding function is provided for installing the connecting explosive column 6 and the nitrogen gas tablet 5.
In the nitrogen generator manufactured in the above manner, the trigger signal firstly triggers the igniter 16, then the igniter 16 ignites the connecting explosive column 6, the connecting explosive column 6 can be manufactured into an igniting agent, then the nitrogen tablet 5 and the explosive column 6 realize long-time low-flow nitrogen supply through orderly and continuous low-flow combustion, the generated nitrogen is purified and cooled by the filter layer 10, low-temperature pure nitrogen is obtained, and the pure nitrogen is discharged through the air outlet 15.
Example two
Fig. 2 shows an embodiment of a laminated nitrogen generator in which the nitrogen tablets are of an M-shaped flat layer structure folded from one end to the other. In the nitrogen generator manufactured in the mode, the trigger signal firstly triggers the ignition tool, then the ignition tool ignites the connecting explosive column, the connecting explosive column can be manufactured into an ignition medicine, then the tablet and the explosive column burn in an orderly and continuous low-flow manner, long-time low-flow nitrogen supply is realized, generated nitrogen is purified and cooled through the filter layer, low-temperature and pure nitrogen is obtained, and the nitrogen is discharged through the air outlet.
Claims (11)
1. A laminated nitrogen generator, characterized in that: the device comprises a generator shell (1) and a generator upper cover (13), wherein the generator upper cover (13) is fixed on the generator shell (1), and a part in a cavity of the generator shell (1) is used as a combustion chamber; three round holes are formed in the generator upper cover (13) and are respectively used for installing a flow regulating valve of the ignition device, the pressure relief valve (14) and the air outlet (15);
the nitrogen gas tablets (5), the connecting explosive columns (6) and the heat insulation materials (8) are filled in the combustion chamber, the plurality of nitrogen gas tablets (5) are stacked layer by layer, the intervals between the adjacent nitrogen gas tablets (5) are the same, all the nitrogen gas tablets (5) are connected together through the connecting explosive columns (6), and the heat insulation materials (8) are arranged in the intervals between the adjacent nitrogen gas tablets (5) and are used for preventing the nitrogen gas tablets (5) from being burnt in series;
the connection mode of the nitrogen tablet (5) and the connecting explosive column (6) is specifically as follows:
the connecting explosive column (6) connects the adjacent two layers of nitrogen tablets (5) head to head or tail to tail, and all the nitrogen tablets (5) are connected in series by stacking layer by layer; simultaneously, during assembly, the nitrogen tablets (5) are tightly contacted and connected with the connecting explosive column (6) by compacting the heat insulation material (8);
the spacing between adjacent nitrogen gas tablets (5) is adjusted by connecting the heights of the grains (6).
2. A laminated nitrogen generator as claimed in claim 1, wherein: the nitrogen tablet (5) is a spiral flat layer structure which diverges outwards from the center or an M-shaped flat layer structure which is folded and bent from one end to the other end.
3. A laminated nitrogen generator as claimed in claim 1, wherein: the nitrogen gas tablet (5) is close to being equipped with first recess on the lateral wall of terminal surface, two surfaces that are on the back of each other on connecting grain (6) are equipped with a first arch respectively, connecting grain (6) with nitrogen gas tablet (5) are through first recess and first protruding cooperation is connected.
4. A laminated nitrogen generator as claimed in claim 1, wherein: the nitrogen tablet (5) and the connecting explosive column (6) are made of the same material, and sodium azide is used as a main component; the cross section of the nitrogen tablet (5) is round, rectangular, square, triangular, trapezoid or other irregular shapes; the connecting explosive column (6) is in a cylindrical shape, a rectangle, a square, a triangle, a trapezoid or other irregular shapes; the connecting explosive column (6) is provided with holes or is not provided with holes.
5. A laminated nitrogen generator as claimed in claim 1, wherein: the ignition device comprises an ignition tool fixing piece (11) and an ignition tool (16);
the igniter (16) and the igniter fixing piece (11) penetrate through the reserved mounting hole of the generator upper cover (13) and are welded and fixed, and the igniter fixing piece (11) is cylindrical and is made into a stepped hole form; the igniter fixing piece (11) is used for fixing the uppermost connecting explosive column (6) and limiting the upward and downward movement of the uppermost explosive column (6); meanwhile, the igniter fixing piece (11) is also used for fixing the igniter (16), and a limited semi-closed space is provided for igniting the connecting explosive column (6) by the igniter (16).
6. A laminated nitrogen generator as claimed in claim 1, wherein: the nitrogen generator also comprises a filtering and cooling device and a supporting and positioning device;
the filtering and cooling device comprises a filter layer (10), a lower gasket (9) and an upper gasket (12);
the lower gasket (9) is welded on the inner wall of the generator shell (1), and a plurality of air outlet holes are formed in the bottom of the lower gasket (9) and used for discharging gas generated by combustion of the nitrogen gas generating agent; meanwhile, ceramic fiber cotton is padded on the lower gasket (9) to prevent the filter layer (10) from falling into the combustion chamber, and the lower gasket (9) is also used for fixing the uppermost nitrogen tablet (5) and limiting the uppermost nitrogen tablet (5) from moving up and down; the filter layer (10) is arranged between the upper gasket (12) and the lower gasket (9) and is used for purifying and cooling gas generated by the combustion of the nitrogen gas generating agent so as to discharge pure nitrogen; the nitrogen generating agent comprises a nitrogen tablet (5) and a connecting explosive column (6);
the supporting and positioning device realizes the fixed positioning of the nitrogen tablet (5) and the connecting explosive column (6), and reduces the relative shaking and vibration between the nitrogen tablet (5) and the connecting explosive column (6); the supporting and positioning device comprises a bottom plate (2), a supporting frame (3), a guiding side plate (4) and a positioning bracket (7);
the positioning bracket (7) and the guiding side plate (4) are welded on the bottom plate (2) according to the distribution of the nitrogen tablets (5), or are inserted on the bottom plate (2) provided with the slots, the positioning bracket (7) and the guiding side plate (4) position the nitrogen tablets (5) and the connecting explosive column (6), and meanwhile the guiding side plate (4) plays a guiding role on the supporting frame (3); the supporting frames (3) are arranged between each layer of nitrogen tablets (5) and are used for supporting each layer of nitrogen tablets (5).
7. A laminated nitrogen generator as claimed in claim 1, wherein: the generator shell (1) is in a round-corner rectangular cylinder shape, a cuboid or a cube, the bottom is closed, and the upper opening is opened.
8. A laminated nitrogen generator as claimed in claim 1, wherein: one or more ignition devices (16) in the ignition device are mechanical impact ignition devices or electronic ignition devices.
9. A laminated nitrogen generator as claimed in claim 1, wherein: the heat insulation material (8) is of a loose porous structure and is used for keeping internal heat from dissipating and reducing the temperature of the shell, and the heat insulation material is made of vermiculite, ceramic aluminum fiber cotton or silicon nitride aerogel.
10. A laminated nitrogen generator as claimed in claim 1, wherein: the pressure relief valve (14) is a spring type pressure relief valve and is used for pressure relief and unidirectional gas circulation, so that the excessive pressure in the shell of the generator caused by the combustion of the nitrogen tablet (5) under abnormal conditions or other unexpected conditions is prevented.
11. A method of generating nitrogen using the stacked nitrogen generator of claim 1, wherein: the external trigger signal firstly triggers the ignition tool (16), then the ignition tool (16) ignites and connects the explosive column (6), then the nitrogen tablet (5) and the explosive column (6) realize long-time nitrogen supply through orderly and continuous combustion, the generated nitrogen is purified and cooled by the filter layer (10) to obtain pure nitrogen, and the pure nitrogen is discharged through the air outlet (15).
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003234191A (en) * | 2002-02-06 | 2003-08-22 | Nippon Kayaku Co Ltd | Light emitting element |
| CN107673316A (en) * | 2017-04-20 | 2018-02-09 | 湖北航天化学技术研究所 | A kind of nitrogen generating agent and its forming method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003234191A (en) * | 2002-02-06 | 2003-08-22 | Nippon Kayaku Co Ltd | Light emitting element |
| CN107673316A (en) * | 2017-04-20 | 2018-02-09 | 湖北航天化学技术研究所 | A kind of nitrogen generating agent and its forming method |
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