CN116164307A - Gas spiral-flow type air-hydrogen torch igniter - Google Patents
Gas spiral-flow type air-hydrogen torch igniter Download PDFInfo
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- CN116164307A CN116164307A CN202310219315.4A CN202310219315A CN116164307A CN 116164307 A CN116164307 A CN 116164307A CN 202310219315 A CN202310219315 A CN 202310219315A CN 116164307 A CN116164307 A CN 116164307A
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 101
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 101
- 239000007789 gas Substances 0.000 title claims abstract description 84
- 238000002485 combustion reaction Methods 0.000 claims abstract description 76
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 239000007921 spray Substances 0.000 claims description 15
- 230000008602 contraction Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 239000002737 fuel gas Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 abstract description 5
- 230000002146 bilateral effect Effects 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 150000002431 hydrogen Chemical class 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
- F23Q3/008—Structurally associated with fluid-fuel burners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/70—Baffles or like flow-disturbing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2207/00—Ignition devices associated with burner
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
The invention belongs to the technical field of combustion and ignition, and discloses a gas cyclone type air-hydrogen torch igniter. The gas swirl type air-hydrogen torch igniter comprises an end socket, a gas collecting ring and a combustion chamber which are sequentially connected from top to bottom, wherein the end socket is fixedly connected with the combustion chamber through a bolt assembly of a flange plate, the gas collecting ring is clamped between the end socket and the combustion chamber, and the tail end of the combustion chamber is connected with a fire transmission rod; a nozzle mounting seat is sleeved in the gas collecting ring, a nozzle is mounted in the nozzle mounting seat through thread matching, a hydrogen flow passage is arranged on the central axis of the nozzle, and the hydrogen flow passage is communicated with a hydrogen inlet of the seal head up and down; the gas collecting ring is connected with the air inlet and the pressure measuring joint; the combustion chamber is provided with bilateral symmetry spark plug mounting seats, each spark plug mounting seat is respectively inserted into a spark plug, and the spark plug is externally connected with an ignition cabinet. The gas swirl type air-hydrogen torch igniter enhances the mixing of air and hydrogen through the nozzles of direct flow of hydrogen and air swirl, and solves the problem of reliable ignition when the working conditions are widely changed.
Description
Technical Field
The invention belongs to the technical field of combustion and ignition, and particularly relates to a gas swirl type air-hydrogen torch igniter.
Background
The torch igniter has the advantages of high ignition energy, reusability, high ignition reliability and the like, and is an ignition device widely applied to liquid rocket engines, gas generators and air heaters. From prior art achievements, flare igniters have typically employed gaseous or liquid fuels, the former typically being hydrogen, methane, etc., and the latter mostly being alcohols, coal oils, etc.
For a torch igniter with oxygen as an oxidant, the oxygen and gaseous fuel can be quickly mixed to form combustible mixed gas, so that the combustible mixed gas is easy to ignite by a spark plug, but high-pressure oxygen is a dangerous combustion-supporting gas, and the oxygen supply system of the torch igniter has great danger; in addition, the flame temperature of the oxygen and the gaseous fuel after combustion is very high, which is not beneficial to the long-time work of the torch igniter, the working time of the existing torch igniter adopting the oxygen is generally not more than hundreds of milliseconds, and the short-time work of the torch igniter cannot ensure the reliable ignition of the device to be combusted (a liquid rocket engine, a gas generator, an air heater and the like).
The liquid fuel combustion process involves atomization, blending and combustion, the injector design is complex, ignition is difficult compared with the gaseous fuel, and the working stability is poor. Moreover, the liquid fuel is easy to produce oscillation combustion, so that unstable combustion of a liquid rocket engine and an air heater can be excited, and the stable operation of equipment is directly threatened.
Currently, there is a need to develop a gas swirl air-hydrogen torch igniter that uses fuel and air combustion to achieve reliable ignition and long-term operation.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the gas cyclone type air-hydrogen torch igniter which adopts fuel and air combustion to realize reliable ignition and can work for a long time.
The invention relates to a gas swirl type air-hydrogen torch igniter which is characterized by comprising a seal head, a gas collecting ring and a combustion chamber which are sequentially connected from top to bottom, wherein the seal head and the combustion chamber are fixedly connected through a bolt assembly of a flange plate, the gas collecting ring is clamped between the seal head and the combustion chamber, and the tail end of the combustion chamber is welded with a fire transmission rod; a nozzle mounting seat is sleeved in the gas collecting ring, a nozzle is mounted in the nozzle mounting seat through thread matching, a hydrogen flow passage is arranged on the central axis of the nozzle, and the hydrogen flow passage is communicated with a hydrogen inlet of the seal head up and down; the gas collecting ring is connected with the air inlet and the pressure measuring joint; the combustion chamber is provided with bilateral symmetry spark plug mounting seats, the spark plugs are respectively inserted into the spark plug mounting seats, and the spark plugs are externally connected with an ignition cabinet;
the seal head, the hydrogen inlet, the nozzle mounting seat, the gas collecting ring and the combustion chamber are vertical to the central axis; the air inlet and the pressure measuring joint are on the same horizontal central axis;
the nozzle is a pipe body, a cylindrical section I, a thread section, a cone section and a cylindrical section II are sequentially arranged from top to bottom, the cylindrical section I is communicated with the hydrogen inlet, the thread section is provided with an external thread matched with an internal thread of a nozzle mounting seat, the cone section is a transition section between the thread section and the cylindrical section II, the cylindrical section II is provided with an air cyclone, and the rotational flow direction of the air cyclone is consistent with that of the external thread of the thread section; the tail end of the cylindrical section II is closed, a plurality of hydrogen spray holes which are uniformly arranged are arranged along the circumferential direction, the central axis of each hydrogen spray hole is a horizontal line, and the distance between the tail end of the nozzle and the central axis of the spark plug is 1.0-1.2 times of the inner diameter of the combustion chamber;
the airflow channel of the fire transmission rod is a contraction channel, and the contraction channel is sequentially provided with a contraction section and an equal straight section from top to bottom;
high-pressure hydrogen enters the nozzle from the hydrogen inlet and is sprayed out through the hydrogen spray hole, the flow rate of the high-pressure hydrogen ranges from 1g/s to 5g/s, and the spraying pressure drop ranges from 0.1MPa to 1MPa; high-pressure cold air enters the gas collecting ring from the air inlet and is rotationally ejected out through the air cyclone; at the tail end of the nozzle cylinder section II, high-pressure hydrogen and high-pressure cold air are mixed in a swirling manner to form combustible mixed gas, a spark plug ignites the combustible mixed gas to form high-temperature fuel gas, and the high-temperature fuel gas is sprayed out through a contraction passage of a fire transmission rod; meanwhile, high-pressure cold air forms a gas film for cooling the combustion chamber on the inner wall of the combustion chamber, so that the temperature of the inner wall of the combustion chamber is reduced;
the gas spiral-flow type air-hydrogen torch igniter inserts a flame transmission rod into a to-be-ignited combustion device, and is fixed on the to-be-ignited combustion device in a bolt connection mode through a flange plate at the tail end of a combustion chamber.
Further, the ignition cabinet converts 220V alternating current into 10kV high voltage power and outputs the 10kV high voltage power to the spark plug.
Further, the seal head is sealed with the gas collecting ring through a copper gasket.
Further, the combustion chamber is made of stainless steel.
Further, the pressure range of the high-pressure cold air is 7-15 MPa, and the flow range is 90-200 g/s; the pressure range of the high-pressure hydrogen is 9-15 MPa, and the flow range is 2-10 g/s.
Further, the fire transmission rod material is a high-temperature alloy, and the brand of the fire transmission rod material is one of GH3128 or GH 3230.
Further, the fire transmission rod is fixed at the tail end of the combustion chamber in a welding mode, and the nozzle mounting seat is fixed in the inner cavity of the gas collection ring in a welding mode.
Further, the swirl number of the air swirler is larger than 0.6, and the swirl channel angle is larger than 45 degrees.
The gas collecting ring in the gas cyclone type air-hydrogen torch igniter is clamped between the sealing head and the combustion chamber, and the sealing head is connected with the combustion chamber through bolts of the flange plate, so that the installation is convenient; the nozzles are movably connected with the nozzle mounting seat through threads, so that the nozzles with different parameters can be conveniently replaced; the nozzle mounting seat is welded with the gas collecting ring, so that the mutual isolation of hydrogen and air is ensured; the fire transmission rod is welded and connected to the tail end of the combustion chamber, so that the reliable installation is ensured.
The high-pressure hydrogen of the gas cyclone type air hydrogen torch igniter enters the vertical airflow channel in the nozzle from the hydrogen inlet, is sprayed into the combustion chamber through the plurality of uniformly distributed hydrogen spray holes at the tail end of the nozzle, the number and the diameter of the hydrogen spray holes are determined according to the hydrogen flow, the variation range of the hydrogen flow is ensured to be 2 g/s-10 g/s, and the hydrogen spray pressure drop is between 0.1 MPa-1 MPa.
The high-pressure cold air of the gas cyclone type air-hydrogen torch igniter enters the gas collecting ring from the air inlet, then enters the combustion chamber through the cyclone channel, and the cyclone air is fully mixed with the hydrogen injected from the center in the combustion chamber to form combustible mixed gas, so that the ignition reliability is effectively improved, and the wide-range ignition can be realized; meanwhile, after the swirling air is sprayed into the combustion chamber, a cooling air film is formed on the wall surface of the combustion chamber, so that the wall surface of the combustion chamber is not ablated by high-temperature fuel gas.
The air cyclone in the gas cyclone type air-hydrogen torch igniter is consistent with the screw thread direction of the nozzle, so that the air can enter the cyclone channel to generate the force for screwing the nozzle. Meanwhile, in order to ensure effective mixing of high-pressure cold air and high-pressure hydrogen, the swirl number of the air swirler should be more than 0.6, and the swirl channel angle is more than 45 degrees.
According to the gas cyclone type air-hydrogen torch igniter, the fire transmission rod is inserted into the to-be-ignited combustion device, and is fixed on the to-be-ignited combustion device in a bolt connection mode through the flange plate at the tail end of the combustion chamber, so that the installation is rapid and convenient.
The flame transfer rod of the gas cyclone type air-hydrogen torch igniter is made of high-temperature alloy GH3128 (or GH 3230), so that the torch igniter can work for a long time. The airflow channel of the flame transfer rod is a shrinkage channel, so that the chamber pressure of the combustion chamber of the torch igniter can be improved, the hydrogen is ensured to be fully combusted, and the combustion efficiency of the torch igniter and the temperature uniformity of a gas outlet are improved.
The gas swirl type air-hydrogen torch igniter controls the hydrogen flow and the injection pressure through the hydrogen spray holes, has high flow control precision, and can realize reliable ignition with the equivalent ratio in the range of 0.8-2.0.
The gas cyclone type air hydrogen torch igniter provided by the invention has the following characteristics:
1. the hydrogen and air are adopted for ignition, so that the safety risk of a supply pipeline is reduced, and the long-time work of about 5 seconds can be realized;
2. the swirl nozzle is adopted, so that the mixing effect of hydrogen and air is enhanced, the ignition reliability is improved, a gas film for cooling a combustion chamber can be formed, and ablation is avoided;
3. reliable ignition of the equivalent ratio of air to hydrogen in the range of 0.8-2.0 can be realized, and the working range is wide;
4. the structure is simple, and the gas collecting ring and the nozzle are replaceable;
5. the torch igniter is connected with the device to be combusted through bolts, so that the device is convenient to disassemble and assemble;
6. the spark plug for igniting the torch igniter is a common civil product, and has strong universality, simplicity and reliability.
In short, the gas cyclone type air-hydrogen torch igniter effectively enhances the mixing of air and hydrogen through the nozzles of direct flow and air cyclone of hydrogen, and solves the problem of reliable ignition when the working condition is widely changed; the combustion chamber of the torch igniter is protected from ablation through air film cooling, and meanwhile, the high-temperature alloy is selected as a material of the fire transmission rod, so that the long-time work and the repeated work of the torch igniter are realized; the equivalent ratio of air to hydrogen is controlled through the hydrogen spray hole, so that the working condition change and the gas temperature control are realized.
Drawings
FIG. 1 is a perspective view of a gas swirl air hydrogen torch igniter of the present invention;
FIG. 2 is a cross-sectional view of a gas swirl air hydrogen torch igniter of the invention;
FIG. 3a is a perspective view of a nozzle in a gas swirl air hydrogen torch igniter of the invention;
FIG. 3b is a cross-sectional view A-A of a nozzle in a gas swirl air hydrogen torch igniter of the invention.
In the figure, 1. End socket; 2. a hydrogen inlet; 3. a nozzle; 4. a nozzle mount; 5. a gas collecting ring; 6. an air inlet; 7. a combustion chamber; 8. a spark plug mounting base; 9. a fire transmission rod; 10. a pressure measuring joint; 11. and (5) a hydrogen spray hole.
Description of the embodiments
The invention is described in detail below with reference to the drawings and examples.
Example 1
As shown in fig. 1 and 2, the gas swirl air-hydrogen torch igniter of the embodiment comprises a sealing head 1, a gas collecting ring 5 and a combustion chamber 7 which are sequentially connected from top to bottom, wherein the sealing head 1 and the combustion chamber 7 are fixedly connected through a bolt component of a flange plate, the gas collecting ring 5 is clamped between the sealing head 1 and the combustion chamber 7, and the tail end of the combustion chamber 7 is welded and connected with a fire transmission rod 9; a nozzle mounting seat 4 is sleeved in the gas collecting ring 5, a nozzle 3 is mounted in the nozzle mounting seat 4 through thread matching, a hydrogen flow passage is arranged on the central axis of the nozzle 3, and the hydrogen flow passage is communicated with the hydrogen inlet 2 of the seal head 1 up and down; the gas collecting ring 5 is connected with the air inlet 6 and the pressure measuring joint 10; the combustion chamber 7 is provided with laterally symmetrical spark plug mounting seats 8, the spark plugs are respectively inserted into the spark plug mounting seats 8, and the spark plugs are externally connected with an ignition cabinet;
the seal head 1, the hydrogen inlet 2, the nozzle 3, the nozzle mounting seat 4, the gas collecting ring 5 and the combustion chamber 7 are vertical central axes; the air inlet 6 and the pressure measuring joint 10 are on the same horizontal central axis;
as shown in fig. 3a and 3b, the nozzle 3 is a pipe body, and is sequentially provided with a cylindrical section I, a thread section, a cone section and a cylindrical section II from top to bottom, wherein the cylindrical section I is communicated with the hydrogen inlet 2, the thread section is provided with external threads matched with internal threads of the nozzle mounting seat 4, the cone section is a transition section between the thread section and the cylindrical section II, the cylindrical section II is provided with an air cyclone, and the rotational flow direction of the air cyclone is consistent with the external threads of the thread section; the tail end of the cylindrical section II is closed, a plurality of hydrogen spray holes 11 which are uniformly arranged are arranged along the circumferential direction, the central axis of each hydrogen spray hole 11 is a horizontal line, and the distance between the tail end of the nozzle 3 and the central axis of the spark plug is 1.0-1.2 times the inner diameter of the combustion chamber 7;
the air flow channel of the fire transmission rod 9 is a contraction channel, and the contraction channel is sequentially provided with a contraction section and an equal straight section from top to bottom;
high-pressure hydrogen enters the nozzle 3 from the hydrogen inlet 2 and is sprayed out through the hydrogen spray hole 11, the flow rate of the high-pressure hydrogen is changed within the range of 1g/s to 5g/s, and the spraying pressure drop is within the range of 0.1MPa to 1MPa; high-pressure cold air enters the air collecting ring 5 from the air inlet 6 and is rotationally ejected out through the air cyclone; at the tail end of the cylindrical section II of the nozzle 3, high-pressure hydrogen and high-pressure cold air are mixed in a swirling manner to form combustible mixed gas, the spark plug ignites the combustible mixed gas to form high-temperature fuel gas, and the high-temperature fuel gas is sprayed out through a contraction passage of the fire transmission rod 9; meanwhile, the high-pressure cold air forms a gas film for cooling the combustion chamber 7 on the inner wall of the combustion chamber 7, so that the temperature of the inner wall of the combustion chamber 7 is reduced;
the gas cyclone type air hydrogen torch igniter inserts a flame transfer rod 9 into the combustion device to be ignited, and is fixed on the combustion device to be ignited in a bolt connection mode through a flange plate at the tail end of the combustion chamber 7.
Further, the ignition cabinet converts 220V alternating current into 10kV high voltage power and outputs the 10kV high voltage power to the spark plug.
Further, the seal head 1 and the gas collecting ring 5 are sealed by a copper gasket.
Further, the material of the combustion chamber 7 is stainless steel.
Further, the pressure range of the high-pressure cold air is 7-15 MPa, and the flow range is 90-200 g/s; the pressure range of the high-pressure hydrogen is 9-15 MPa, and the flow range is 2-10 g/s.
Further, the material of the fire transmission rod 9 is a high-temperature alloy, and the brand is one of GH3128 or GH 3230.
Further, the fire transmission rod 9 is fixed at the tail end of the combustion chamber 7 in a welding mode, and the nozzle mounting seat 4 is fixed in the inner cavity of the gas collection ring 5 in a welding mode.
Further, the swirl number of the air swirler is larger than 0.6, and the swirl channel angle is larger than 45 degrees.
Although the embodiments of the present invention have been disclosed above, it is not limited to the use listed in the specification and the embodiments, but it can be fully applied to various fields suitable for the present invention. Additional modifications and variations may readily be made by those skilled in the art without departing from the principles of the present invention, and the invention is not limited to the specific details and illustrations shown and described herein.
Claims (8)
1. The gas swirl type air-hydrogen torch igniter is characterized by comprising a sealing head (1), a gas collecting ring (5) and a combustion chamber (7) which are sequentially connected from top to bottom, wherein the sealing head (1) and the combustion chamber (7) are fixedly connected through a bolt assembly of a flange plate, the gas collecting ring (5) is clamped between the sealing head (1) and the combustion chamber (7), and the tail end of the combustion chamber (7) is welded with a fire transmission rod (9); a nozzle mounting seat (4) is sleeved in the gas collecting ring (5), a nozzle (3) is mounted in the nozzle mounting seat (4) through thread matching, a hydrogen flow passage is arranged on the central axis of the nozzle (3), and the hydrogen flow passage is communicated with a hydrogen inlet (2) of the seal head (1) up and down; the gas collecting ring (5) is connected with the air inlet (6) and the pressure measuring joint (10); the combustion chamber (7) is provided with laterally symmetrical spark plug mounting seats (8), the spark plugs are respectively inserted into the spark plug mounting seats (8), and the spark plugs are externally connected with an ignition cabinet;
the sealing head (1), the hydrogen inlet (2), the nozzle (3), the nozzle mounting seat (4), the gas collecting ring (5) and the combustion chamber (7) are the same with the vertical central axis; the air inlet (6) and the pressure measuring joint (10) are at the same horizontal central axis;
the nozzle (3) is a pipe body, a cylindrical section I, a thread section, a cone section and a cylindrical section II are sequentially arranged from top to bottom, the cylindrical section I is communicated with the hydrogen inlet (2), the thread section is provided with an external thread matched with an internal thread of the nozzle mounting seat (4), the cone section is a transition section between the thread section and the cylindrical section II, an air cyclone is arranged on the cylindrical section II, and the rotational flow direction of the air cyclone is consistent with that of the external thread of the thread section; the tail end of the cylindrical section II is closed, a plurality of hydrogen spray holes (11) which are uniformly arranged are arranged along the circumferential direction, the central axis of each hydrogen spray hole (11) is a horizontal line, and the distance between the tail end of the nozzle (3) and the central axis of the spark plug is 1.0-1.2 times the inner diameter of the combustion chamber (7);
the air flow channel of the fire transmission rod (9) is a contraction channel, and the contraction channel is sequentially provided with a contraction section and an equal straight section from top to bottom;
high-pressure hydrogen enters the nozzle (3) from the hydrogen inlet (2) and is sprayed out through the hydrogen spray hole (11), the flow rate of the high-pressure hydrogen is changed within the range of 1g/s to 5g/s, and the spraying pressure drop is within the range of 0.1MPa to 1MPa; high-pressure cold air enters the gas collecting ring (5) from the air inlet (6) and is rotationally ejected out through the air cyclone; at the tail end of a cylindrical section II of the nozzle (3), high-pressure hydrogen and high-pressure cold air are mixed in a rotational flow manner to form combustible mixed gas, a spark plug ignites the combustible mixed gas to form high-temperature fuel gas, and the high-temperature fuel gas is sprayed out through a contraction passage of a fire transmission rod (9); meanwhile, high-pressure cold air forms a gas film for cooling the combustion chamber (7) on the inner wall of the combustion chamber (7), so that the temperature of the inner wall of the combustion chamber (7) is reduced;
the gas spiral-flow type air-hydrogen torch igniter inserts a flame transmission rod (9) into the combustion device to be ignited, and is fixed on the combustion device to be ignited in a bolt connection mode through a flange plate at the tail end of the combustion chamber (7).
2. The gas swirl air-hydrogen torch igniter of claim 1 wherein the ignition cabinet converts 220V ac power to 10kV high voltage power for output to the spark plug.
3. The gas cyclone type air-hydrogen torch igniter of claim 1, wherein the sealing head (1) and the gas collecting ring (5) are sealed by a copper gasket.
4. The gas swirl air-hydrogen torch igniter of claim 1 wherein the combustion chamber (7) is stainless steel.
5. The gas cyclone type air-hydrogen torch igniter of claim 1, wherein the pressure range of the high-pressure cold air is 7-15 MPa, and the flow range is 90-200 g/s; the pressure range of the high-pressure hydrogen is 9-15 MPa, and the flow range is 2-10 g/s.
6. The gas cyclone type air-hydrogen torch igniter of claim 1, wherein the material of the flame transfer rod (9) is a high-temperature alloy, and the brand is one of GH3128 or GH 3230.
7. The gas cyclone type air-hydrogen torch igniter of claim 1, wherein the flame transfer rod (9) is fixed at the tail end of the combustion chamber (7) in a welding mode, and the nozzle mounting seat (4) is fixed in the inner cavity of the gas collecting ring (5) in a welding mode.
8. The gas swirl air-hydrogen torch igniter of claim 1 wherein the air swirler has a swirl number greater than 0.6 and a swirl passage angle greater than 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310219315.4A CN116164307B (en) | 2023-03-09 | 2023-03-09 | Gas spiral-flow type air-hydrogen torch igniter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310219315.4A CN116164307B (en) | 2023-03-09 | 2023-03-09 | Gas spiral-flow type air-hydrogen torch igniter |
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| CN116164307A true CN116164307A (en) | 2023-05-26 |
| CN116164307B CN116164307B (en) | 2024-04-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398899A (en) * | 2023-03-09 | 2023-07-07 | 中国空气动力研究与发展中心空天技术研究所 | Centrifugal air hydrogen torch igniter |
| CN117703597A (en) * | 2024-02-06 | 2024-03-15 | 中国空气动力研究与发展中心空天技术研究所 | Microchannel high-temperature-resistant ignition device of ramjet engine, design method and preparation method |
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| JPH11257614A (en) * | 1998-03-12 | 1999-09-21 | Chugai Ro Co Ltd | Low calorific gas combustion burner |
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| CN116398899A (en) * | 2023-03-09 | 2023-07-07 | 中国空气动力研究与发展中心空天技术研究所 | Centrifugal air hydrogen torch igniter |
| CN116398899B (en) * | 2023-03-09 | 2024-04-26 | 中国空气动力研究与发展中心空天技术研究所 | Centrifugal air hydrogen torch igniter |
| CN117703597A (en) * | 2024-02-06 | 2024-03-15 | 中国空气动力研究与发展中心空天技术研究所 | Microchannel high-temperature-resistant ignition device of ramjet engine, design method and preparation method |
| CN117703597B (en) * | 2024-02-06 | 2024-04-12 | 中国空气动力研究与发展中心空天技术研究所 | Microchannel high-temperature-resistant ignition device of ramjet engine, design method and preparation method |
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