CN115823581B - Injector of torch igniter - Google Patents
Injector of torch igniter Download PDFInfo
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- CN115823581B CN115823581B CN202310027603.XA CN202310027603A CN115823581B CN 115823581 B CN115823581 B CN 115823581B CN 202310027603 A CN202310027603 A CN 202310027603A CN 115823581 B CN115823581 B CN 115823581B
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Abstract
The invention discloses an injector of a torch igniter, which comprises a mounting seat, an end cover and nozzle assemblies, wherein the mounting seat is in sealing connection with the opening end of a combustion chamber, at least two groups of nozzle assemblies are arranged between the mounting seat and the end cover in a sealing way, a fuel main oil way and an injector main gas way are arranged on the end cover, the fuel main oil way and the injector main gas way are respectively communicated with all the nozzle assemblies at the same time, and the oil injection end of the nozzle assemblies penetrates through the mounting seat and is communicated with the combustion chamber. The beneficial effects are that: according to the invention, two or more groups of nozzle assemblies are integrated on one injector at the same time, so that the content of fuel in the combustion chamber is improved on the premise of improving the atomization quality of liquid fuel, the structural requirement of a torch igniter can be met through the combined use of two or three nozzle assemblies, the adaptability of the torch igniter is improved, the fuel atomization quality of the whole spray field can be improved through the combined use of the elliptical spray through holes and the circular spray through holes, and the flame stability in the combustion chamber of the torch igniter is improved.
Description
Technical Field
The invention relates to an important part of an ignition device, in particular to an injector of a torch igniter, and belongs to the technical field of igniters.
Background
The torch igniter is used as a miniature burner, a spark plug is used for igniting liquid fuel with small flow to generate stable high-temperature gas flame, and then the high-temperature gas flame is used for igniting the fuel in the main combustion chamber of the combustion heater. For an air and liquid fuel type torch igniter, liquid fuel needs to be atomized by means of an atomization device, and compared with a conventional atomization nozzle, the bubble atomization nozzle has the characteristics of good atomization performance under low pressure, small influence of viscosity, low energy consumption and the like, and is applied to the torch igniter so as to promote atomization and evaporation of liquid fuel in a combustion chamber of the torch igniter, realize rapid mixing and combustion of an oxidant and the liquid fuel, further generate stable high-temperature gas flame, and ensure that the torch igniter effectively starts a combustion heater.
In the design of a torch igniter, a bubble atomizing nozzle is a key part for determining good and bad atomization performance of liquid fuel, and the key of the design of the bubble atomizing nozzle is to form a spray particle size field, a speed field and a flow intensity ratio distribution required by evaporation, mixing, ignition and combustion of a combustion chamber. The selection of the structural parameters of the bubble atomizing nozzles and the number of the nozzles determine the nozzle atomizing characteristics such as the size of the spray angle, the particle size, the speed distribution and the like to a great extent, and further determine the stability of flame in the combustion chamber of the torch igniter.
The atomization quality can be improved along with the increase of the gas-liquid ratio, but the excessively high gas-liquid ratio inevitably leads to the reduction of the fuel content, so that the ignition energy of a torch is reduced, and even the phenomenon of flameout occurs. At present, the improvement of the liquid fuel atomization quality in the torch igniter combustion chamber in the prior art is difficult to improve the content of fuel oil at the same time, so that the torch ignition difficulty cannot be reduced, and the torch ignition stability is improved.
Disclosure of Invention
The invention aims to: the invention aims at solving the problems in the prior art and provides a sprayer of a torch igniter, which can simultaneously improve the atomization quality of liquid fuel and the content of fuel in a combustion chamber of the torch igniter.
The technical scheme is as follows: the utility model provides an injector of torch igniter, includes mount pad, end cover and nozzle subassembly, mount pad and combustion chamber open end sealing connection, sealing mounting has two at least groups of nozzle subassemblies between mount pad and the end cover, be equipped with fuel main oil circuit and injector main gas circuit on the end cover, fuel main oil circuit and injector main gas circuit communicate with all nozzle subassemblies respectively simultaneously, nozzle subassembly's oil spout end runs through mount pad and combustion chamber intercommunication.
According to the invention, two or more groups of nozzle assemblies are integrated on one injector at the same time, and the fuel main oil way on the end cover and the main gas way of the injector supply oil and air to the nozzle assemblies at the same time, so that the oil supply quantity of a single nozzle assembly is reduced under the condition of improving the total oil supply quantity, and the atomization quality of each nozzle assembly is further improved; on the premise of improving the atomization quality of the liquid fuel, the content of the fuel in the combustion chamber is improved, so that the ignition difficulty is reduced.
Preferably, in order to improve the maintenance convenience of the present invention, the mounting base is provided with an oxidizing agent supply line communicating with the combustion chamber. Through with oil spout subassembly and oxidant supply line integrated simultaneously on the mount pad, can realize the dismouting of whole torch igniter feed system, improve maintenance convenience, oxidant supply line and oil spout subassembly are located the same side that is located whole torch igniter simultaneously on the mount pad simultaneously, consequently, are favorable to the intensive mixing of oxidant and fuel more, improve the stability of some.
Preferably, in order to improve the atomization quality of the fuel oil, the nozzle assembly comprises a nozzle body and an injection head, wherein the injection head is arranged at the injection end of the nozzle body, a liquid fuel oil way, a branch gas pipeline and a gas-liquid mixing chamber are arranged in the nozzle body, and the liquid fuel oil way and the branch gas pipeline are respectively communicated with the gas-liquid mixing chamber; the center of the injection head is provided with an injection through hole, the inlet of the injection through hole is communicated with the gas-liquid mixing chamber, and the outlet of the injection through hole is communicated with the combustion chamber. The invention adopts the bubble atomizing nozzle, and further improves the atomizing quality of the liquid fuel in the combustion chamber by utilizing the characteristic that the bubble atomizing nozzle has good atomizing quality under the low pressure condition.
Preferably, in order to further improve the atomization quality of the fuel, the branch gas pipeline is provided with a gas guide pipe, the branch gas pipeline is inserted into the gas-liquid mixing chamber through the gas guide pipe, and through holes are uniformly distributed on the pipe wall of the gas guide pipe in the gas-liquid mixing chamber. The atomization quality of the fuel in the gas-liquid mixing chamber can be improved through the through holes on the wall of the gas guide pipe.
In order to meet the structural requirements of the torch igniter, two nozzle assemblies are arranged between the mounting seat and the end cover in a sealing mode, the two nozzle assemblies are symmetrical about the center of the mounting seat, and the cross sections of the outlets of the two spraying through holes are respectively in an oval structure and a round structure.
By adopting the oval spray through holes, the advantages of different flow fields of the oval spray holes in the long and short axial directions, larger spray cone angle, short jet breaking length, higher oil-gas mixing quality and the like are utilized, so that the fuel atomization quality of the whole spray field is improved, and the stability of flame in a combustion chamber of a torch igniter is improved. The spray flow fields in the spray fields are different due to the adoption of the spray through holes with different shapes and the staggered arrangement, and the particle sizes are different, so that the range of the particle sizes in the spray fields is enlarged, the ignition range of the torch igniter is widened, the ignition difficulty of the torch is reduced, and the stability of flame in the combustion chamber of the torch igniter is improved.
In order to meet the structural requirement of the torch igniter and further improve the atomization quality of liquid fuel in the combustion chamber, three nozzle assemblies are arranged between the mounting seat and the end cover in a sealing mode, the three nozzle assemblies are uniformly distributed on the circumference taking the central shaft of the mounting seat as the center of a circle, the cross section of one outlet of the injection through hole is of an oval structure, and the cross section of the other two outlets of the injection through hole is of a round structure.
The synchronous operation of the three nozzle assemblies can reduce the oil supply amount of a single nozzle assembly under the condition of improving the total oil supply amount, so that the atomization quality of each nozzle assembly is improved; meanwhile, spray flow fields in spray fields can be different due to the fact that spray through holes in different shapes and staggered arrangement are used, particle sizes are different, the range of the particle sizes in the spray fields is enlarged, the ignition range of a torch igniter is widened, the ignition difficulty of the torch is reduced, and the stability of flame in a combustion chamber of the torch igniter is improved.
In order to meet the structural requirement of the torch igniter and further improve the atomization quality of liquid fuel in the combustion chamber, three nozzle assemblies are arranged between the mounting seat and the end cover in a sealing mode, the three nozzle assemblies are uniformly distributed on the circumference taking the central shaft of the mounting seat as the center of a circle, the cross section of one outlet of the injection through hole is of a circular structure, and the cross section of the other two outlets of the injection through hole is of an oval structure.
The synchronous operation of the three nozzle assemblies can reduce the oil supply amount of a single nozzle assembly under the condition of improving the total oil supply amount, so that the atomization quality of each nozzle assembly is improved; meanwhile, the combined use and dislocation arrangement of the two elliptical structure injection through holes and one circular structure injection through hole can enable spray flow fields in the spray fields to be different, and particle sizes are different, so that the range of particle sizes in the spray fields is enlarged, the ignition range of a torch igniter is widened, the ignition difficulty of the torch is reduced, and the stability of flame in a combustion chamber of the torch igniter is improved.
Preferably, in order to further improve the atomization quality of the liquid fuel in the combustion chamber, the long axes of the injection through holes with the oval cross sections at the two outlets are not parallel. The spray flow fields in the spray fields can be further made different through the spray through holes with the two non-parallel long shafts and the particle sizes are also different, so that the interval of the particle sizes in the spray fields is enlarged, the ignition range of the torch igniter is widened, the ignition difficulty of the torch is reduced, and the stability of flame in the combustion chamber of the torch igniter is improved.
Preferably, in order to improve the atomization quality of the liquid fuel in the combustion chamber, a wire mesh is arranged between the gas-liquid mixing chamber and the injection head. The large bubbles in the gas-liquid mixing chamber can be effectively divided into a plurality of uniform and stable small bubbles by utilizing the wire mesh, so that the average diameter of atomized particles is reduced to improve the atomization quality of the liquid fuel.
The beneficial effects are that: according to the invention, two or more groups of nozzle assemblies are integrated on one injector at the same time, and the fuel main oil way on the end cover and the main gas way of the injector supply oil and air to the nozzle assemblies at the same time, so that the oil supply quantity of a single nozzle assembly is reduced under the condition of improving the total oil supply quantity, and the atomization quality of each nozzle assembly is further improved; on the premise of improving the atomization quality of the liquid fuel, the content of the fuel in the combustion chamber is improved, so that the ignition difficulty is reduced; by adopting the oval spray through holes, the advantages of different flow fields of the oval spray holes in the long and short axial directions, larger spray cone angle, short jet breaking length, higher oil-gas mixing quality and the like are utilized, so that the fuel atomization quality of the whole spray field is improved, and the stability of flame in a combustion chamber of a torch igniter is improved. The spray flow fields in the spray fields are different due to the adoption of the spray through holes with different shapes and the staggered arrangement, and the particle sizes are different, so that the range of the particle sizes in the spray fields is enlarged, the ignition range of the torch igniter is further widened, the ignition difficulty of the torch is reduced, and the stability of flame in the combustion chamber of the torch igniter is improved; the combined use of two or three nozzle assemblies can adapt to the structural requirement of the torch igniter, the adaptability of the invention is improved, the fuel atomization quality of the whole spray field can be improved through the combined use of the elliptical spray through holes and the circular spray through holes, and the flame stability in the combustion chamber of the torch igniter is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the mounting structure of the present invention;
FIG. 2 is a schematic view of the structure of a nozzle assembly of the present invention;
FIG. 3 is an enlarged view of a partial structure of the spray end of the nozzle assembly of the present invention;
FIG. 4 is a schematic view of a three-dimensional coordinate system of the present invention with respect to a mounting base;
FIG. 5 is a structural layout of two nozzle assemblies mounted on a mounting base of the present invention;
FIG. 6 is a structural layout of a first embodiment of the mounting of three nozzle assemblies on a mount of the present invention;
FIG. 7 is a structural layout of a second embodiment of the mounting of three nozzle assemblies to the mount of the present invention;
fig. 8 is a schematic view of the structure of the wire net of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
As shown in fig. 1, an injector of a torch igniter comprises a mounting seat 1, an end cover 2 and nozzle assemblies 3, wherein the mounting seat 1 is in sealing connection with the opening end of a combustion chamber 4, at least two groups of nozzle assemblies 3 are arranged between the mounting seat 1 and the end cover 2 in a sealing manner, a fuel main oil way 21 and an injector main gas way 22 are arranged on the end cover 2, the fuel main oil way 21 and the injector main gas way 22 are respectively communicated with all the nozzle assemblies 3 at the same time, and the oil injection end of the nozzle assemblies 3 penetrates through the mounting seat 1 and is communicated with the combustion chamber 4.
According to the invention, two or more groups of nozzle assemblies 3 are integrated on one injector at the same time, and the fuel main oil way 21 and the injector main gas way 22 on the end cover 2 supply oil and air to the nozzle assemblies 3 at the same time, so that the oil supply quantity of a single nozzle assembly is reduced under the condition of improving the total oil supply quantity, and the atomization quality of each nozzle assembly 3 is further improved; on the premise of improving the atomization quality of the liquid fuel, the content of the fuel in the combustion chamber 4 is improved, so that the ignition difficulty is reduced.
In order to improve the maintenance convenience of the present invention, the mounting base 1 is provided with an oxidizing agent supply line 11 communicating with the combustion chamber 4. Through with oil spout subassembly 3 and oxidant supply line 11 integrated simultaneously on mount pad 1, can realize the dismouting of whole torch igniter feed system, improve the maintenance convenience, oxidant supply line 11 is located the same side that is located whole torch igniter on mount pad 1 simultaneously with oil spout subassembly 3 simultaneously, consequently, is favorable to the intensive mixing of oxidant and fuel more, improves the stability of some.
As shown in fig. 2 and 3, in order to improve the atomization quality of the fuel, the nozzle assembly 3 includes a nozzle body 31 and an injection head 32, the injection head 32 is mounted at the injection end of the nozzle body 31, a liquid fuel oil path 33, a branch gas pipeline 34 and a gas-liquid mixing chamber 35 are disposed in the nozzle body 31, and the liquid fuel oil path 33 and the branch gas pipeline 34 are respectively communicated with the gas-liquid mixing chamber 35; the center of the injection head 32 is provided with an injection through hole 321, the inlet of the injection through hole 321 is communicated with the gas-liquid mixing chamber 35, and the outlet of the injection through hole 321 is communicated with the combustion chamber 4. The invention adopts the bubble atomizing nozzle, and further improves the atomizing quality of the liquid fuel in the combustion chamber 4 by utilizing the characteristic that the bubble atomizing nozzle has good atomizing quality under the low pressure condition.
In order to further improve the atomization quality of the fuel oil, the branch gas pipeline 34 is provided with a gas guide pipe 36, the branch gas pipeline 34 is inserted into the gas-liquid mixing chamber 35 through the gas guide pipe 36, and through holes 361 are uniformly distributed on the pipe wall of the gas guide pipe 36 in the gas-liquid mixing chamber 35. The atomization quality of the fuel in the gas-liquid mixing chamber 35 can be improved through the through holes 361 on the wall of the gas guide pipe 36.
Example 1
As shown in fig. 4 and 5, in order to adapt to the structural requirement of the torch igniter, two nozzle assemblies 3 are installed between the mounting seat 1 and the end cover 2 in a sealing manner, the two nozzle assemblies 3 are symmetrical about the center of the mounting seat 1, and the cross sections of the outlets of the two injection through holes 321 are respectively in an elliptical structure and a circular structure.
The elliptical spray through holes 321 are adopted, and the advantages of different flow fields in the long and short axial directions, larger spray cone angle, short jet breaking length, higher oil-gas mixing quality and the like of the spray through holes 321 are utilized, so that the fuel atomization quality of the whole spray field is improved, and the stability of flame in a combustion chamber of a torch igniter is improved. The spray through holes 321 with different shapes and the staggered arrangement can enable spray flow fields in the spray fields to be different, and particle sizes are different, so that the range of the particle sizes in the spray fields is enlarged, the ignition range of the torch igniter is widened, the ignition difficulty of the torch is reduced, and the stability of flame in the combustion chamber 4 of the torch igniter is improved.
Example two
As shown in fig. 4 and 6, in order to meet the structural requirement of the torch igniter and further improve the atomization quality of the liquid fuel in the combustion chamber, three nozzle assemblies 3 are installed between the mounting seat 1 and the end cover 2 in a sealing manner, the three nozzle assemblies 3 are uniformly distributed on the circumference taking the central shaft of the mounting seat 1 as the center of a circle, the cross section of the outlet of one injection through hole 321 is in an elliptical structure, and the cross section of the outlet of the other two injection through holes 321 is in a circular structure.
The synchronous operation of the three nozzle assemblies 3 can reduce the oil supply amount of the single nozzle assembly 3 under the condition that the total oil supply amount is improved, so that the atomization quality of each nozzle assembly 3 is improved; meanwhile, the spray flow fields in the spray fields are different due to the fact that spray through holes 321 with different shapes and the spray through holes are arranged in a staggered mode, the particle sizes are different, the range of the particle sizes in the spray fields is enlarged, the ignition range of the torch igniter is widened, the ignition difficulty of the torch is reduced, and the stability of flame in the combustion chamber 4 of the torch igniter is improved.
Example III
As shown in fig. 4 and 7, in order to meet the structural requirement of the torch igniter and further improve the atomization quality of the liquid fuel in the combustion chamber, three nozzle assemblies 3 are installed between the mounting seat 1 and the end cover 2 in a sealing manner, the three nozzle assemblies 3 are uniformly distributed on the circumference taking the central shaft of the mounting seat 1 as the center of a circle, the cross section of the outlet of one injection through hole 321 is in a circular structure, and the cross section of the outlet of the other two injection through holes 321 is in an elliptical structure.
The synchronous operation of the three nozzle assemblies 3 can reduce the oil supply amount of the single nozzle assembly 3 under the condition that the total oil supply amount is improved, so that the atomization quality of each nozzle assembly 3 is improved; meanwhile, the combined use and dislocation arrangement of the two elliptical structure injection through holes 321 and one circular structure injection through hole 321 can enable spray flow fields in a spray field to be different, and particle sizes are different, so that the range of particle sizes in the spray field is enlarged, the ignition range of a torch igniter is widened, the ignition difficulty of the torch is reduced, and the stability of flame in a combustion chamber of the torch igniter is improved.
In order to further improve the atomization quality of the liquid fuel in the combustion chamber, the long axes of the injection through holes 321 with oval cross sections at the two outlets are mutually perpendicular. The spray flow fields in the spray fields can be further made different through the spray through holes with the two oval structures with the long axes perpendicular to each other, and the particle sizes are also different, so that the interval of the particle sizes in the spray fields is enlarged, the ignition range of the torch igniter is widened, the ignition difficulty of the torch is reduced, and the stability of flame in the combustion chamber of the torch igniter is improved.
As shown in fig. 8, in order to improve the atomization quality of the liquid fuel in the combustion chamber, a wire mesh 37 is provided between the gas-liquid mixing chamber 35 and the injection head 32. The large bubbles in the gas-liquid mixing chamber 35 can be effectively divided into a plurality of uniform and stable small bubbles by utilizing the wire mesh 37, so that the average diameter of atomized particles is reduced to improve the atomization quality of the liquid fuel.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. An injector for a torch igniter, characterized by: the fuel injection device comprises a mounting seat (1), an end cover (2) and nozzle assemblies (3), wherein the mounting seat (1) is in sealing connection with the opening end of a combustion chamber (4), at least two groups of nozzle assemblies (3) are arranged between the mounting seat (1) and the end cover (2) in a sealing mode, a fuel main oil way (21) and an injector main gas way (22) are arranged on the end cover (2), the fuel main oil way (21) and the injector main gas way (22) are respectively and simultaneously communicated with all the nozzle assemblies (3), and an oil injection end of the nozzle assemblies (3) penetrates through the mounting seat (1) and is communicated with the combustion chamber (4);
an oxidant supply pipeline (11) communicated with the combustion chamber (4) is arranged on the mounting seat (1);
the nozzle assembly (3) comprises a nozzle body (31) and an injection head (32), the injection head (32) is arranged at the injection end of the nozzle body (31), a liquid fuel oil circuit (33), a branch gas pipeline (34) and a gas-liquid mixing chamber (35) are arranged in the nozzle body (31), and the liquid fuel oil circuit (33) and the branch gas pipeline (34) are respectively communicated with the gas-liquid mixing chamber (35); the center of the injection head (32) is provided with an injection through hole (321), an inlet of the injection through hole (321) is communicated with the gas-liquid mixing chamber (35), and an outlet of the injection through hole (321) is communicated with the combustion chamber (4);
two nozzle assemblies (3) are arranged between the mounting seat (1) and the end cover (2) in a sealing mode, the two nozzle assemblies (3) are symmetrical with respect to the center of the mounting seat (1), and the cross sections of the outlets of the two injection through holes (321) are respectively of an oval structure and a round structure.
2. An injector for a torch igniter, characterized by: the fuel injection device comprises a mounting seat (1), an end cover (2) and nozzle assemblies (3), wherein the mounting seat (1) is in sealing connection with the opening end of a combustion chamber (4), at least two groups of nozzle assemblies (3) are arranged between the mounting seat (1) and the end cover (2) in a sealing mode, a fuel main oil way (21) and an injector main gas way (22) are arranged on the end cover (2), the fuel main oil way (21) and the injector main gas way (22) are respectively and simultaneously communicated with all the nozzle assemblies (3), and an oil injection end of the nozzle assemblies (3) penetrates through the mounting seat (1) and is communicated with the combustion chamber (4);
an oxidant supply pipeline (11) communicated with the combustion chamber (4) is arranged on the mounting seat (1);
the nozzle assembly (3) comprises a nozzle body (31) and an injection head (32), the injection head (32) is arranged at the injection end of the nozzle body (31), a liquid fuel oil circuit (33), a branch gas pipeline (34) and a gas-liquid mixing chamber (35) are arranged in the nozzle body (31), and the liquid fuel oil circuit (33) and the branch gas pipeline (34) are respectively communicated with the gas-liquid mixing chamber (35); the center of the injection head (32) is provided with an injection through hole (321), an inlet of the injection through hole (321) is communicated with the gas-liquid mixing chamber (35), and an outlet of the injection through hole (321) is communicated with the combustion chamber (4);
three nozzle assemblies (3) are arranged between the mounting seat (1) and the end cover (2) in a sealing mode, the three nozzle assemblies (3) are uniformly distributed on the circumference taking the central shaft of the mounting seat (1) as the center of a circle, the cross section of the outlet of one injection through hole (321) is of an oval structure, and the cross section of the outlet of the other two injection through holes (321) is of a round structure.
3. An injector for a torch igniter, characterized by: the fuel injection device comprises a mounting seat (1), an end cover (2) and nozzle assemblies (3), wherein the mounting seat (1) is in sealing connection with the opening end of a combustion chamber (4), at least two groups of nozzle assemblies (3) are arranged between the mounting seat (1) and the end cover (2) in a sealing mode, a fuel main oil way (21) and an injector main gas way (22) are arranged on the end cover (2), the fuel main oil way (21) and the injector main gas way (22) are respectively and simultaneously communicated with all the nozzle assemblies (3), and an oil injection end of the nozzle assemblies (3) penetrates through the mounting seat (1) and is communicated with the combustion chamber (4);
an oxidant supply pipeline (11) communicated with the combustion chamber (4) is arranged on the mounting seat (1);
the nozzle assembly (3) comprises a nozzle body (31) and an injection head (32), the injection head (32) is arranged at the injection end of the nozzle body (31), a liquid fuel oil circuit (33), a branch gas pipeline (34) and a gas-liquid mixing chamber (35) are arranged in the nozzle body (31), and the liquid fuel oil circuit (33) and the branch gas pipeline (34) are respectively communicated with the gas-liquid mixing chamber (35); the center of the injection head (32) is provided with an injection through hole (321), an inlet of the injection through hole (321) is communicated with the gas-liquid mixing chamber (35), and an outlet of the injection through hole (321) is communicated with the combustion chamber (4);
three nozzle assemblies (3) are arranged between the mounting seat (1) and the end cover (2) in a sealing mode, the three nozzle assemblies (3) are uniformly distributed on the circumference taking the central shaft of the mounting seat (1) as the center of a circle, the cross section of the outlet of one injection through hole (321) is of a circular structure, and the cross section of the outlet of the other two injection through holes (321) is of an oval structure.
4. The torch igniter injector of claim 3 wherein: the long axes of the spraying through holes (321) with the oval cross sections at the two outlets are not parallel.
5. A torch igniter injector as defined in any one of claims 1-3 wherein: the gas-liquid mixing device is characterized in that a gas guide pipe (36) is arranged on the branch gas pipeline (34), the branch gas pipeline (34) is inserted into the gas-liquid mixing chamber (35) through the gas guide pipe (36), and through holes (361) are uniformly distributed in the pipe wall of the gas guide pipe (36) in the gas-liquid mixing chamber (35).
6. A torch igniter injector as defined in any one of claims 1-3 wherein: a wire mesh (37) is arranged between the gas-liquid mixing chamber (35) and the spray head (32).
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| CN202310027603.XA CN115823581B (en) | 2023-01-09 | 2023-01-09 | Injector of torch igniter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310027603.XA CN115823581B (en) | 2023-01-09 | 2023-01-09 | Injector of torch igniter |
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| CN115823581B true CN115823581B (en) | 2023-09-22 |
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