CN112282971B - Solid gas starter for gas self-pressurization - Google Patents
Solid gas starter for gas self-pressurization Download PDFInfo
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- CN112282971B CN112282971B CN202011180304.2A CN202011180304A CN112282971B CN 112282971 B CN112282971 B CN 112282971B CN 202011180304 A CN202011180304 A CN 202011180304A CN 112282971 B CN112282971 B CN 112282971B
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- gas
- shell
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- exhaust plate
- self
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- 239000007858 starting material Substances 0.000 title claims abstract description 30
- 239000007787 solid Substances 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 239000003721 gunpowder Substances 0.000 claims abstract description 17
- 239000003814 drug Substances 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 39
- 239000002737 fuel gas Substances 0.000 claims description 24
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 8
- 229910052593 corundum Inorganic materials 0.000 claims description 8
- 239000010431 corundum Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- 239000011733 molybdenum Substances 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000003380 propellant Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 239000004449 solid propellant Substances 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 10
- 238000004880 explosion Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 235000015842 Hesperis Nutrition 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 235000012633 Iberis amara Nutrition 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229920002160 Celluloid Polymers 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/95—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by starting or ignition means or arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/24—Guiding or controlling apparatus, e.g. for attitude control
- B64G1/242—Orbits and trajectories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/24—Guiding or controlling apparatus, e.g. for attitude control
- B64G1/244—Spacecraft control systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/40—Arrangements or adaptations of propulsion systems
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Aviation & Aerospace Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
Abstract
The invention provides a solid gas starter for gas self-pressurization, which belongs to solid gas starters and solves the problem of high temperature of output gas of the existing solid gas starter; the tail part of the shell is provided with a diaphragm for isolating the external atmosphere; an ignition medicine box, gunpowder charge, a wire mesh, a first porous baffle, a cooling component and a filtering component are sequentially arranged in the inner cavity from left to right; the invention is used for the use requirement of a gas self-pressurization system of the attitude control engine, and has the advantage of reducing the output temperature of the gas.
Description
Technical Field
The invention relates to a solid gas starter, in particular to a solid gas starter for gas self-pressurization.
Background
The attitude and orbit control engine system is used for attitude control of aircrafts such as rockets or satellites and the like, and adopts a gas self-pressurization technology in order to realize the aims of long-term storage, flexible response and convenient service; because the gas self-pressurization system needs a certain initial starting pressure, a starting product is matched to provide the required initial power for the system in a short time.
The initial power source for boosting the engine mainly comprises a high-pressure gas cylinder, a motor and a solid gas starter.
The high-pressure gas cylinder is complex in use and maintenance, poor in long-term storage safety, large in energy required by the motor, complex in system structure and incapable of meeting the requirements of an engine system, and therefore the engine system mostly adopts a solid gas starting scheme.
However, the existing solid gas starter mainly has the following defects: the temperature of output fuel gas is high, generally more than 2200K, and the high-temperature fuel gas easily ablates the downstream piston assembly; the fuel gas contains a large amount of solid residues with large particle size, so that the friction force of a piston moving part is increased or blocked easily, the working efficiency is reduced or the fuel gas cannot work; the outlet of the starter is easy to cause lower sealing performance due to long-term storage, so that hydrazine atmosphere existing in a downstream pressurizing cavity of the outlet of the starter enters an inner cavity of the starter, and the working performance of the starter is directly influenced.
Disclosure of Invention
The invention aims to: the invention provides a solid fuel gas starter for self-pressurization of fuel gas, which is used for attitude control of aircrafts such as rockets or satellites and the like.
In order to achieve the purpose, the technical solution provided by the invention is as follows:
a solid fuel gas starter for self-pressurization of fuel gas comprises a shell and an electric explosion tube arranged at the head of the shell, wherein an inner cavity is arranged in the shell, an exhaust plate is arranged at the tail of the inner cavity, and the outer wall of the exhaust plate is connected with the shell;
it is characterized in that: an ignition medicine box, gunpowder charge, a wire mesh, a first porous baffle, a cooling assembly and a filtering assembly are sequentially arranged in the inner cavity from left to right;
the ignition medicine box is connected with the inner wall of the shell, the front end of the ignition medicine box is communicated with the electric detonator through a through hole arranged on the shell, the gunpowder charge is freely filled in the inner cavity, and the two ends of the ignition medicine box are respectively connected with the shell through 4 non-metal fixed blocks;
and the tail part of the shell is provided with a diaphragm for improving ignition pressure and isolating external atmosphere.
Further, the front end of the exhaust plate is provided with a cavity, and the wire mesh, the first porous baffle, the cooling assembly and the filtering assembly are sequentially arranged in the cavity from left to right.
Furthermore, the filtering component consists of a molybdenum net of 100 meshes to 400 meshes and a second porous baffle, and is connected by spot welding and embedded in the exhaust plate;
the cooling component is a porous metal frame filled with corundum sand and embedded in the exhaust plate;
the first porous baffle is embedded in the exhaust plate;
the wire mesh is arranged in the exhaust plate in an interference manner.
Furthermore, the diameter of the corundum sand is 1 mm-3 mm, and the corundum sand absorbs the heat of the fuel gas, so that the fuel gas is cooled.
Furthermore, the metal wire mesh is cylindrical and is formed by pressing stainless steel wires with the diameter of 0.4-0.8 mm.
Further, the front end of the shell is connected with the electric detonator through threads, and the rear end of the shell is connected with the exhaust plate through threads.
Furthermore, the gunpowder charge is made of a double-base propellant, the shape of the gunpowder charge is a cylindrical inner-outer hole full-combustion surface combustion structure, the theoretical combustion temperature of the double-base propellant is 1688K, the output gas temperature is low, and the solid residue rate is low.
Furthermore, the filtering component comprises a molybdenum net and a second porous baffle, and the molybdenum net is connected with the second porous baffle and plays a role in filtering a large amount of solid residues with large particle size in the fuel gas.
Furthermore, a flange is arranged on the outer wall of the electric explosion tube in the circumferential direction, a groove matched with the flange is arranged on the inner wall of the shell head in the circumferential direction, a sealing gasket is arranged in the groove, and when the electric explosion tube is connected with the shell, the flange abuts against the sealing gasket to seal the electric explosion tube with the shell; the sealing performance of the starter outlet is improved.
Furthermore, the diaphragm is made of stainless steel, and a rice-shaped nick is prefabricated on one end face, and the thickness of the nick is 0.1-0.15 mm.
Furthermore, the exhaust plate is made of stainless steel, and 5-10 small holes with the diameter range of 0.5-1.0 mm are distributed on the end face of the exhaust plate.
The invention has the advantages that:
1. the invention adopts the double-base propellant, the temperature of the output fuel gas is low, and the solid residue rate is low;
2. according to the invention, the combined structure of the second through hole mounting frame, the wire mesh, the corundum sand and the molybdenum mesh is adopted to realize the cooling and filtration of the fuel gas, and the cooling of the fuel gas is realized through heat transfer, so that the ablation of the high-temperature fuel gas on a downstream piston assembly is avoided;
3. according to the invention, a first throat is formed in an exhaust plate through a metal wire mesh, a second throat is formed in the exhaust plate by a first porous baffle, a third throat is formed in the exhaust plate by a cooling assembly, and a fourth throat is formed in the exhaust plate by a filtering assembly; by adopting the multi-throat design, the temperature of the fuel gas can be further reduced, the output fuel gas is shunted, and the scouring of the fuel gas to downstream components is reduced;
4. according to the invention, the flange, the groove and the sealing gasket are arranged, when the electric detonator is connected with the shell, the flange tightly abuts against the sealing gasket to seal the electric detonator with the shell;
5. according to the invention, the membrane is arranged at the tail part of the shell, so that the influence of the external atmosphere on components such as gunpowder charging and the like in the starter is avoided, and the sealing property of the outlet of the starter is improved; the pre-made rice-shaped nicks on the end surface of the diaphragm are used for improving the ignition pressure.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
the reference numbers are as follows: 1-an electric detonator, 2-a shell, 3-an ignition medicine box, 4-gunpowder charge, 5-a wire mesh, 6-a first porous baffle, 7-a cooling component, 8-a filtering component, 9-an exhaust plate and 10-a membrane.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
as shown in fig. 1, the present embodiment provides a solid gas starter for gas self-pressurization, which includes an electric squib 1, a housing 2, an ignition cartridge 3, a powder charge 4, a wire mesh 5, a first porous baffle 6, a cooling assembly 7, a filter assembly 8, an exhaust plate 9, and a membrane 10.
The electric detonator 1 adopts a double-bridge insensitive electric detonator, and is connected with the head of the shell 2 by screw threads; a flange is arranged on the outer wall of the electric detonator 1 in the circumferential direction, a groove matched with the flange is arranged on the inner wall of the head of the shell 2 in the circumferential direction, a sealing gasket is arranged in the groove, and when the electric detonator 1 is connected with the shell 2, the flange tightly abuts against the sealing gasket to seal the electric detonator 1 and the shell 2; the sealing pad is preferably an asbestos gasket.
The shell of the ignition medicine box 3 is formed by bonding xylonite materials, a plurality of cylindrical ignition medicine particles are arranged in the shell, the ignition medicine is boron/potassium nitrate, and the ignition medicine box 3 and the shell 2 are bonded by glue solution.
The gunpowder charge 4 adopts a double-base propellant, the shape of the gunpowder charge is a cylindrical internal and external hole combustion structure, the gunpowder charge 4 is freely filled in an inner cavity, two ends of the gunpowder charge 4 are respectively connected with the shell 2 through 4 non-metal fixed blocks, the theoretical combustion temperature of the double-base propellant is 1200K-1700K, and 1688K is preferred in the embodiment.
The tail part of the shell 2 is provided with a cavity, and the wire mesh 5, the first porous baffle 6, the cooling component 7 and the filtering component 8 are sequentially positioned in the cavity from left to right.
The wire mesh 5 is formed by pressing stainless steel wires with the diameter ranging from 0.4mm to 0.8mm, preferably 0.6mm in the embodiment, the wire mesh 5 is made of stainless steel and is arranged in the exhaust plate 9 in an interference mode.
The first porous baffle 6 is made of 1Cr11Ni2W2MoV and is embedded in the exhaust plate 9.
The cooling component 7 is composed of a metal frame and corundum sand, the metal frame is made of 1Cr11Ni2W2MoV, the structure is a hollow porous structure, the particle size of the corundum sand is 1-3 mm, and the cooling component 7 is embedded in the exhaust plate 9.
The filtering component 8 consists of a molybdenum net and a second porous baffle plate, the specification of the molybdenum net is 200 meshes, the material of the second porous baffle plate is 1Cr11Ni2W2MoV, and the second porous baffle plate and the molybdenum net are connected by spot welding and are embedded in the exhaust plate 9.
The material of the exhaust plate 9 is 1Cr11Ni2W2MoV, 6 small holes with the diameter range of 0.5 mm-1.0 mm are distributed on the end surface, 0.75mm is preferred in the embodiment, and the exhaust plate is connected with the pressurizing cavity by threads.
The membrane 10 is made of 022Cr19Ni10, the thickness is in the range of 0.1-0.15 mm, the thickness is preferably 0.13mm in the embodiment, the forward rupture pressure is 1-3 MPa, a 'meter' -shaped notch is prefabricated on one end face, and the notch is welded on the tail portion of the shell 2 by laser.
The working process is as follows: after the solid fuel gas generator is assembled, 5A-10A direct current is respectively introduced to two bridge circuits of the electric explosion tube 1, the passage time is not less than 50ms, the electric explosion tube 1 works to ignite the ignition medicine box 3, high-temperature fuel gas and hot particles generated by the electric explosion tube 1 and the ignition medicine box 3 ignite the gunpowder charge 4, the gunpowder charge 4 works according to the design requirement, the fuel gas is cooled and filtered to be output, and the fuel gas is pressurized to a downstream cavity after passing through the wire mesh 5, the first porous baffle 6, the cooling component 7, the filtering component 8 and the exhaust plate 9 to provide initial power for a fuel gas self-pressurization system; the temperature of the gas output by the solid gas starter is less than 650K, and the particle size of the residue is less than 0.071 mm.
The first throat is formed in the exhaust plate 9 by pressing the metal wire mesh 5, the second throat is formed in the exhaust plate 9 by the first porous baffle 6, and the third throat is formed in the exhaust plate 9 by the cooling assembly 7; the filter assembly 8 forms a fourth throat in the exhaust plate 9; by adopting the multi-throat design, the temperature of the fuel gas can be further reduced, the output fuel gas is shunted, and the scouring of the fuel gas to downstream components is reduced.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present disclosure.
Claims (10)
1. A solid fuel gas starter for self-pressurization of fuel gas comprises a shell (2) and an electric detonator (1) arranged at the head of the shell (2), wherein an inner cavity is arranged inside the shell (2), an exhaust plate (9) is arranged at the tail of the inner cavity, and the outer wall of the exhaust plate (9) is connected with the shell (2);
the method is characterized in that: an ignition medicine box (3), a gunpowder charge (4), a wire mesh (5), a first porous baffle (6), a cooling component (7) and a filtering component (8) are sequentially arranged in the inner cavity from left to right;
the ignition medicine box (3) is connected with the inner wall of the shell (2), the front end of the ignition medicine box (3) is communicated with the electric detonator (1) through a through hole arranged on the shell (2), the gunpowder charge (4) is freely filled in an inner cavity, and the two ends of the ignition medicine box are respectively connected with the shell (2) through 4 non-metal fixed blocks;
the tail part of the shell (2) is provided with a diaphragm (10) used for improving ignition pressure and isolating external atmosphere.
2. The solid gas starter for gas self-pressurization according to claim 1, characterized in that: the front end of air discharge plate (9) is provided with the cavity, wire mesh (5), first porous baffle (6), cooling subassembly (7) and filtering component (8) set gradually in the cavity from left to right.
3. The solid gas starter for gas self-pressurization according to claim 2, characterized in that: the filtering component (8) consists of a molybdenum net with 100 meshes to 400 meshes and a second porous baffle, is connected by spot welding and is embedded in the exhaust plate (9);
the cooling component (7) is a porous metal frame filled with corundum sand and embedded in the exhaust plate (9);
the first porous baffle (6) is embedded in the exhaust plate (9);
the wire mesh (5) is arranged in the exhaust plate (9) in an interference manner.
4. The solid gas starter for gas self-pressurization according to claim 3, characterized in that: the diameter of the corundum sand is 1 mm-3 mm.
5. The solid gas starter for gas self-pressurization according to claim 3, characterized in that: the metal wire mesh (5) is cylindrical and is formed by pressing stainless steel wires with the diameter of 0.4-0.8 mm.
6. The solid gas starter for gas self-pressurization according to claim 1, characterized in that: the front end of the shell (2) is connected with the electric detonator (1) through threads, and the rear end of the shell (2) is connected with the exhaust plate (9) through threads.
7. The solid gas starter for gas self-pressurization according to claim 1, characterized in that: the gunpowder charge (4) is made of a double-base propellant, and the shape of the gunpowder charge (4) is of a cylindrical full combustion surface structure with an inner hole and an outer hole.
8. The solid gas starter for gas self-pressurization according to any one of claims 1 to 7, characterized in that: the outer wall circumference of electric detonator (1) is provided with the flange, the inner wall circumference of casing (2) head be provided with flange complex recess, be provided with sealed the pad in the recess, when electric detonator (1) is connected with casing (2), the flange supports tight sealed pad and seals electric detonator (1) and casing (2).
9. The solid gas starter for gas self-pressurization according to claim 1, characterized in that: the diaphragm (10) is made of stainless steel, a cross-shaped notch is prefabricated on one end face, and the thickness is 0.1 mm-0.15 mm.
10. The solid gas starter for gas self-pressurization according to claim 1, characterized in that: the exhaust plate (9) is made of stainless steel, and 5-10 small holes with the diameter range of 0.5-1.0 mm are distributed on the end face of the exhaust plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011180304.2A CN112282971B (en) | 2020-10-29 | 2020-10-29 | Solid gas starter for gas self-pressurization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011180304.2A CN112282971B (en) | 2020-10-29 | 2020-10-29 | Solid gas starter for gas self-pressurization |
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| Publication Number | Publication Date |
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| CN112282971A CN112282971A (en) | 2021-01-29 |
| CN112282971B true CN112282971B (en) | 2021-08-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114439648B (en) * | 2021-12-31 | 2024-04-30 | 西安近代化学研究所 | Gunpowder starter suitable for engine secondary starting |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4296084A (en) * | 1979-10-29 | 1981-10-20 | Thiokol Corporation | Method of and apparatus for gas generation |
| CN106481457A (en) * | 2016-10-28 | 2017-03-08 | 西安近代化学研究所 | A kind of solid gas starter |
| CN107061050A (en) * | 2017-04-20 | 2017-08-18 | 西安航天动力研究所 | A kind of pulse rifle |
| CN109236497A (en) * | 2018-09-06 | 2019-01-18 | 西安近代化学研究所 | A kind of lateral force pack boronitriding |
| CN209501218U (en) * | 2019-01-07 | 2019-10-18 | 北京信息科技大学 | Combustion gas filter device |
| CN210543046U (en) * | 2019-08-20 | 2020-05-19 | 江西三星气龙消防安全有限公司 | Gas type drive arrangement with block structure |
-
2020
- 2020-10-29 CN CN202011180304.2A patent/CN112282971B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4296084A (en) * | 1979-10-29 | 1981-10-20 | Thiokol Corporation | Method of and apparatus for gas generation |
| CN106481457A (en) * | 2016-10-28 | 2017-03-08 | 西安近代化学研究所 | A kind of solid gas starter |
| CN107061050A (en) * | 2017-04-20 | 2017-08-18 | 西安航天动力研究所 | A kind of pulse rifle |
| CN109236497A (en) * | 2018-09-06 | 2019-01-18 | 西安近代化学研究所 | A kind of lateral force pack boronitriding |
| CN209501218U (en) * | 2019-01-07 | 2019-10-18 | 北京信息科技大学 | Combustion gas filter device |
| CN210543046U (en) * | 2019-08-20 | 2020-05-19 | 江西三星气龙消防安全有限公司 | Gas type drive arrangement with block structure |
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| CN112282971A (en) | 2021-01-29 |
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