CN108119261B - Mixer and gas engine - Google Patents
Mixer and gas engine Download PDFInfo
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- CN108119261B CN108119261B CN201711417754.7A CN201711417754A CN108119261B CN 108119261 B CN108119261 B CN 108119261B CN 201711417754 A CN201711417754 A CN 201711417754A CN 108119261 B CN108119261 B CN 108119261B
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- mixer
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- 239000007789 gas Substances 0.000 claims abstract description 249
- 239000002737 fuel gas Substances 0.000 claims abstract description 41
- 230000007423 decrease Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 9
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/04—Gas-air mixing apparatus
- F02M21/042—Mixer comprising a plurality of bores or flow passages
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention provides a mixer and a gas engine, and relates to the technical field of engines, wherein the mixer comprises a gas mixing pipe; the gas mixing pipe is provided with a plurality of air inlets, a plurality of air outlets, a plurality of gas inlets and a plurality of gas outlets; a plurality of air diversion cavities and a plurality of fuel gas diversion cavities are arranged in the gas mixing pipe; each air inlet and each air outlet are respectively communicated through one of the air diversion cavities, and each gas inlet and each gas outlet are respectively communicated through one of the gas diversion cavities; the air outlets and the gas outlets are arranged at the same end of the gas mixing pipe, and the air outlets and the gas outlets are sequentially arranged at intervals. The mixer can reduce the resistance of the gas and air flowing and improve the gas mixing efficiency; in addition, the concentration of the mixed gas can be uniform during low-pressure gas supply, and the application range of the mixer is enlarged.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a mixer and a gas engine.
Background
In the process of developing and applying a gas engine, a gas supply technology is critical, and affects the power performance, economy, safety and reliability and emission index of the engine to a great extent. The mixer is the most important part in the gas supply system of the mixed gas supply type of the gas inlet pipe, and has the functions of mixing a certain proportion of air and gas to form a combustible mixed gas with a certain concentration, and increasing and decreasing the supply proportion of the gas and the air according to the change of the rotation speed and the load of the engine so as to adapt to the requirements of different working conditions. The quality of the mixer design directly affects the quality of air and gas mixing.
A common venturi mixer is a classical venturi with a throat opening through which the mainstream fluid flows, and through which the incoming fluid flows in through a single opening, the incoming fluid being blended with the mainstream fluid by pressure changes of the two fluids.
However, as the fuel gas and the air flow in a turbulent way, the resistance of the fuel gas doped into the air is larger, and the mixing efficiency is lower; in addition, when low-pressure gas is supplied, the gas is mixed into the middle part of the air under insufficient pressure, so that the concentration of the mixed gas is uneven, and the application range of the mixer is narrow.
Disclosure of Invention
The invention aims to provide a mixer and a gas engine, which are used for solving the technical problems of lower gas mixing efficiency, uneven mixed gas concentration during low-pressure gas supply and narrower application range of the mixer in the prior art.
The mixer provided by the invention comprises a gas mixing pipe; the gas mixing pipe is provided with a plurality of air inlets, a plurality of air outlets, a plurality of gas inlets and a plurality of gas outlets; a plurality of air diversion cavities and a plurality of fuel gas diversion cavities are arranged in the gas mixing pipe; each air inlet and each air outlet are respectively communicated through one of the air diversion cavities, and each gas inlet and each gas outlet are respectively communicated through one of the gas diversion cavities; the air outlets and the gas outlets are arranged at the same end of the gas mixing pipe, and the air outlets and the gas outlets are sequentially arranged at intervals.
Further, the gas mixing tube is cylindrical; the middle part of the gas mixing tube is provided with a central shaft; the plurality of air diversion cavities are arranged at intervals along the circumferential direction of the central shaft, and a fuel gas diversion cavity is formed between every two air diversion cavities; the cross section shape of each air guide cavity along the axial direction perpendicular to the central shaft is the same; the ratio of the cross-sectional areas of the gas diversion cavity and the air diversion cavity along the axial direction perpendicular to the central shaft is 2:1-1:20.
Further, a plurality of air diversion cavities are uniformly arranged at intervals.
Further, the air guide cavity is fan-shaped in cross section along the axial direction perpendicular to the central shaft.
Further, a plurality of gas inlets are arranged on the outer wall of the gas mixing pipe and are arranged at intervals along the circumferential direction of the gas mixing pipe; the plurality of air inlets are arranged at the first end of the gas mixing pipe at intervals; the plurality of air outlets and the plurality of gas outlets are sequentially arranged at the second end of the gas mixing pipe at intervals.
Further, the mixer further comprises a housing; the outer shell is covered outside the gas mixing pipe; the inside of the shell is hollow, and two ends of the shell are open; the side wall of the shell is provided with a through hole, and the through hole is used for introducing fuel gas into the shell.
Further, the inner wall of the shell and the outer wall of the gas mixing tube form a gas buffer cavity.
Further, a mixed gas channel is arranged at the second end of the shell, which is close to the gas mixing pipe; the mixed gas channel is communicated with the air outlet and the gas outlet; the diameter of the mixed gas channel gradually decreases along the direction away from the air outlet.
Further, a first flange and a second flange are respectively arranged at the first end and the second end of the gas mixing pipe; the gas mixing tube is fixedly connected with the shell through the first flange and the second flange.
Further, the invention also provides a gas engine, which comprises a mixer.
The invention provides a mixer, which comprises a gas mixing pipe. In the use process, a user introduces air from a plurality of air inlets, introduces fuel gas from a plurality of fuel gas inlets, flows out of a plurality of air outlets through a plurality of air diversion cavities, and flows out of a plurality of fuel gas outlets through a plurality of fuel gas diversion cavities; the air and the gas are mixed when they flow out.
Because the air guide cavity and the gas guide cavity are not communicated with each other, air and gas can flow independently, and when the gas flows out from the same end of the gas mixing pipe, the contact area of the air and the gas during mixing can be increased, so that the air and the gas are mixed more uniformly. In addition, because the air outlet and the gas outlet are both arranged at the same end on the gas mixing pipe, the flowing directions of the air and the gas in the air diversion cavity and the gas diversion cavity are kept consistent, and the flowing resistance of the gas and the air is reduced.
From the above, the mixer can reduce the resistance of the gas and air flow and improve the gas mixing efficiency; in addition, the concentration of the mixed gas can be uniform during low-pressure gas supply, and the application range of the mixer is enlarged.
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 needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a gas mixing tube according to an embodiment of the present invention;
FIG. 2 is a front view of a gas mixing tube according to an embodiment of the present invention;
FIG. 3 is a right side view of a gas mixing tube according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view at A-A in FIG. 2;
FIG. 5 is a schematic structural view of a housing according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a mixer according to an embodiment of the present invention;
FIG. 7 is a front view of a mixer provided in an embodiment of the invention;
FIG. 8 is a left side view of a mixer provided in an embodiment of the invention;
fig. 9 is a cross-sectional view at B-B in fig. 8.
Icon: 1-a gas mixing tube; 2-air inlet; 3-an air outlet; 4-a fuel gas inlet; 5-a gas outlet; 6-an air diversion cavity; 7-a fuel gas diversion cavity; 8-a central axis; 9-a housing; 10-through holes; 11-a gas buffer chamber; 12-a mixed gas channel; 13-a first flange; 14-a second flange; 15-sealing rings.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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 noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
FIG. 1 is a schematic diagram of a gas mixing tube according to an embodiment of the present invention; FIG. 2 is a front view of a gas mixing tube according to an embodiment of the present invention; FIG. 3 is a right side view of a gas mixing tube according to an embodiment of the present invention; FIG. 4 is a cross-sectional view at A-A in FIG. 2; as shown in fig. 1,2,3 and 4, the mixer provided in the present embodiment includes a gas mixing tube 1; the gas mixing pipe 1 is provided with a plurality of air inlets 2, a plurality of air outlets 3, a plurality of gas inlets 4 and a plurality of gas outlets 5; a plurality of air diversion cavities 6 and a plurality of fuel gas diversion cavities 7 are arranged in the gas mixing pipe 1; each air inlet 2 and each air outlet 3 are respectively communicated through one of the air diversion cavities 6, and each gas inlet 4 and each gas outlet 5 are respectively communicated through one of the gas diversion cavities 7; the air outlets 3 and the gas outlets 5 are all arranged at the same end of the gas mixing pipe 1, and the air outlets 3 and the gas outlets 5 are sequentially arranged at intervals.
The shape of the gas mixing tube 1 may be various, for example: cuboid, square or round bench, etc.
Further, a plurality of gas inlets 4 and a plurality of air inlets 2 may be provided at the same end of the gas mixing pipe 1.
Further, it is preferable that the air guide chamber 6 and the gas guide chamber 7 extend in a straight line, so that resistance to gas flowing can be reduced.
Further, the air diversion cavities 6 and the fuel gas diversion cavities 7 may be sequentially arranged at intervals.
Further, preferably, the number of the air diversion cavity 6 and the gas diversion cavity 7 is not less than 3.
Further, a plurality of partition boards can be arranged in the gas mixing pipe 1 at intervals in parallel in sequence, and an air diversion cavity 6 or a gas diversion cavity 7 is formed by surrounding each two partition boards and the outer wall of the gas mixing pipe 1. The air diversion cavity 6 and the fuel gas diversion cavity 7 are sequentially arranged at intervals; the air inlets 2 and the gas inlets 4 are sequentially arranged at intervals at one end of the gas mixing pipe 1; the air outlets 3 and the gas outlets 5 are sequentially arranged at intervals at the other end of the gas mixing pipe 1. The arrangement mode can increase the contact area of the air and the fuel gas when the air and the fuel gas flow out, so that the air and the fuel gas are mixed more uniformly.
The mixer provided in this embodiment includes a gas mixing tube 1. In the use process, a user introduces air from the plurality of air inlets 2, introduces fuel gas from the plurality of fuel gas inlets 4, flows through the plurality of air guide cavities 6 and flows out from the plurality of air outlets 3, and flows through the plurality of fuel gas guide cavities 7 and flows out from the plurality of fuel gas outlets 5; the air and the gas are mixed when they flow out.
Because the air guide cavity 6 and the gas guide cavity 7 are not communicated with each other, air and gas can flow independently, and when the gas flows out from the same end of the gas mixing pipe 1, the contact area of the air and the gas during mixing can be increased, so that the air and the gas are mixed more uniformly. In addition, since the air outlet 3 and the gas outlet 5 are both arranged at the same end of the gas mixing pipe 1, the flowing directions of air and gas in the air diversion cavity 6 and the gas diversion cavity 7 can be kept consistent, and the flowing resistance of the gas and the air is reduced.
From the above, the mixer can reduce the resistance of the gas and air flow and improve the gas mixing efficiency; in addition, the concentration of the mixed gas can be uniform during low-pressure gas supply, and the application range of the mixer is enlarged.
As shown in fig. 1, 2, 3 and 4, the gas mixing tube 1 is cylindrical in shape in the above-described embodiment; the middle part of the gas mixing tube 1 is provided with a central shaft 8; the air diversion cavities 6 are arranged at intervals along the circumferential direction of the central shaft 8, and a fuel gas diversion cavity 7 is formed between every two air diversion cavities 6; the cross-sectional shape of each air guiding cavity 6 along the axial direction perpendicular to the central shaft 8 is the same; the ratio of the cross-sectional areas of the gas diversion cavity 7 and the air diversion cavity 6 along the axial direction perpendicular to the central shaft 8 is 2:1-1:20.
Preferably, the central shaft 8 is hollow, which can reduce weight.
Further, when the interior of the central shaft 8 is hollow and tubular, it may communicate with the exhaust gas conduit of the crankcase.
Further, it is preferable. The extending direction of the air diversion cavity 6 and the gas diversion cavity 7 is the same as the extending direction of the central shaft 8, and is parallel to the central shaft 8. This can reduce resistance to gas flow. In addition, the gas guiding chamber 7 is arranged in such a way that the difference between the gas flow rate near the central shaft 8 and the gas flow rate far from the central shaft 8 can be reduced.
Furthermore, in the manufacturing process, the gas mixing pipe 1 can be manufactured by adopting a casting, extrusion process or turning process, and the processing cost is low.
In this embodiment, the gas mixing tube 1 is cylindrical, and a plurality of air guiding cavities 6 are arranged at intervals along the circumferential direction of the central shaft 8, and each air guiding cavity 6 has the same cross-sectional shape along the axial direction perpendicular to the central shaft 8. The arrangement can enable air and fuel gas to flow independently and crossly, reduce the flow resistance of the fuel gas and save the manufacturing cost. In addition, the arrangement of the same cross-sectional shape can also ensure that the air quantity flowing out of each air outlet 3 is the same, so that the mixture of the fuel gas and the air is more uniform.
As shown in fig. 1,2,3 and 4, further, a plurality of air guiding cavities 6 are uniformly spaced apart on the basis of the above embodiment.
The cross-sectional shape of the air guiding chamber 6 along the axial direction perpendicular to the central axis 8 may be various, for example: triangle, rectangle, or semicircle, etc.
Further, it can be known from combustion theory that the smaller the ratio of gas to air is during combustion, the less nitrogen oxides are generated during combustion. Therefore, in the use process, a user can adjust the proportion of the cross-sectional area according to actual conditions, so that nitrogen oxides generated by the gas engine are reduced.
In this embodiment, the plurality of air guiding chambers 6 are uniformly spaced. The arrangement can lead the cross-sectional shapes of the fuel gas diversion cavities 7 formed between every two air diversion cavities 6 along the axial direction perpendicular to the central shaft 8 to be the same, so that the fuel gas quantity flowing out of each fuel gas outlet 5 is the same, and the mixture of the fuel gas and the air is more uniform.
As shown in fig. 1 and 3, further, on the basis of the above embodiment, the air guiding chamber 6 has a fan-like cross-sectional shape in a direction perpendicular to the axial direction of the central shaft 8.
In this embodiment, the air guiding chamber 6 has a fan-like cross-sectional shape along the axial direction perpendicular to the central axis 8. The fan-shaped arrangement can enable the central shaft 8 to be circumferentially provided with more air guide cavities 6, so that quantitative air and fuel gas are more dispersed when flowing out, and the air outlets 3 and the fuel gas outlets 5 are sequentially arranged at intervals, so that the air and fuel gas can be more uniformly mixed.
As shown in fig. 1, 2, 3 and 4, further, on the basis of the above-described embodiments, a plurality of gas inlets 4 are provided on the outer wall of the gas mixing tube 1, and are arranged at intervals along the circumferential direction of the gas mixing tube 1; the plurality of air inlets 2 are arranged at the first end of the gas mixing pipe 1 at intervals; the air outlets 3 and the gas outlets 5 are sequentially arranged at the second end of the gas mixing pipe 1 at intervals.
Wherein, when a plurality of air guide cavities 6 evenly interval sets up, a plurality of gas air inlets 4 are evenly interval sets up along circumference on the outer wall of gas mixing tube 1.
In this embodiment, the gas inlet 4 is provided on the outer wall of the gas mixing tube 1, the air inlet 2 is provided at the first end of the gas moderating tube, and the air outlet 3 and the gas outlet 5 are provided at the second end of the gas mixing tube 1. The arrangement mode can enable the ventilation equipment used by a user not to interfere when the user respectively lets in the fuel gas and the air, and has simple structure and convenient operation.
FIG. 5 is a schematic structural view of a housing according to an embodiment of the present invention; as shown in fig. 5, further, on the basis of the above embodiment, the mixer further includes a housing 9; the shell 9 is covered outside the gas mixing tube 1; the inside of the housing 9 is hollow, and both ends are open; the side wall of the housing 9 is provided with a through hole 10, and the through hole 10 is used for introducing fuel gas into the housing 9.
Wherein the through holes 10 may be provided in plurality. The through holes 10 are arranged in one-to-one correspondence with the gas inlets 4, and the inner wall of the shell 9 is abutted with the outer wall of the gas mixing tube 1.
Further, the casing 9 is fixedly connected to the gas mixing tube 1, and the two may be fixedly connected in various manners, for example: welding or clamping, etc.
In this embodiment, the mixer further comprises a housing 9, the housing 9 being arranged to function as a protective gas mixing tube 1.
FIG. 6 is a schematic diagram of a mixer according to an embodiment of the present invention; FIG. 7 is a front view of a mixer provided in an embodiment of the invention; FIG. 8 is a left side view of a mixer provided in an embodiment of the invention; FIG. 9 is a cross-sectional view at B-B in FIG. 8; as shown in fig. 6, 7, 8 and 9, further, the inner wall of the housing 9 and the outer wall of the gas mixing tube 1 form a gas buffer chamber 11.
Wherein the through holes 10 may be provided as one. After the user lets in the gas from through hole 10, the gas gets into gas buffer chamber 11, then evenly gets into gas air inlet 4. The provision of one through hole 10 can save manufacturing costs.
In this embodiment, the inner wall of the housing 9 and the outer wall of the gas mixing tube 1 form a gas buffer chamber 11. In the use process, after the user lets in the gas from through-hole 10, the gas gets into gas buffer chamber 11, then evenly gets into gas air inlet 4. The buffer cavity is filled with the gas, so that insufficient gas amount can be prevented in the mixing stage, the gas amount in each gas diversion cavity 7 is the same, the pressure of each gas outlet 5 is the same, the gas amount is the same, and the uniformity of mixing of the gas and the air is improved.
As shown in fig. 9, further, on the basis of the above embodiment, the housing 9 is provided with a mixed gas passageway 12 near the second end of the gas mixing tube 1; the mixed gas channel 12 is communicated with the air outlet 3 and the fuel gas outlet 5; the diameter of the mixed gas passage 12 gradually decreases in a direction away from the air outlet 3.
In the embodiment, when the device is used, the pressure is gradually increased in the process of entering the small pipe diameter from the large pipe diameter, so that the mixing speed of air and fuel gas can be accelerated, and the mixing degree of the air and the fuel gas is further improved.
As shown in fig. 4 and 9, further, on the basis of the above-described embodiment, the first end and the second end of the gas mixing tube 1 are provided with a first flange 13 and a second flange 14, respectively; the gas mixing tube 1 is fixedly connected to the housing 9 via a first flange 13 and a second flange 14.
The sealing ring 15 is arranged at the joint of the second flange 14 and the housing 9, and the sealing ring 15 can improve the tightness of the device and prevent gas leakage in the circulation process.
Further, the gas mixing tube 1 and the first flange 13 may be clamped or welded, and the gas mixing tube 1 and the second flange 14 may be clamped or welded.
Further, preferably, the first flange 13 and the second flange 14 are respectively and fixedly connected to the housing 9 detachably, for example: snap fit or bolting, etc. In the case of different gas mixtures, the user can assemble different gas mixing tubes 1 with the housing 9. Wherein, the different gas mixing pipes 1 are different from each other in the ratio of the cross-sectional areas of the gas diversion cavity 7 and the air diversion cavity 6 along the axial direction perpendicular to the central shaft 8.
In this embodiment, two ends of the gas mixing tube 1 are fixedly connected to the housing 9 through a first flange 13 and a second flange 14, respectively. The first flange 13 and the second flange 14 are simple in structure, easy and convenient to operate, low in cost and capable of enabling the gas mixing pipe 1 to be connected with the shell 9 more stably.
On the basis of the embodiment, further, the embodiment of the invention provides a gas engine, which comprises a mixer.
The gas engine further comprises an air inlet pipe, a gas inlet pipe and a mixed gas outlet pipe.
Further, the air inlet pipe is fixedly connected with one end of the shell 9 away from the mixed gas channel 12 and is communicated with the air diversion cavity 6; the gas inlet pipe is fixedly connected with the side wall of the shell 9 and is communicated with a through hole 10 on the shell 9; the mixed gas outlet pipe is fixedly connected with one end of the shell 9, which is close to the mixed gas channel 12, and is communicated with the mixed gas channel 12.
Further, the air inlet pipe and the mixed gas outlet pipe are connected with the shell 9 through bolts respectively through a first flange 13 and a second flange 14.
In this embodiment, the gas engine has the above-mentioned mixer, and the effect generated by the mixer is the same as that of the mixer, and will not be described again.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. A mixer, comprising: a gas mixing tube;
The gas mixing pipe is provided with a plurality of air inlets, a plurality of air outlets, a plurality of gas inlets and a plurality of gas outlets; a plurality of air diversion cavities and a plurality of fuel gas diversion cavities are arranged in the gas mixing pipe; each air inlet and each air outlet are respectively communicated with one air diversion cavity, and each gas inlet and each gas outlet are respectively communicated with one gas diversion cavity;
The air outlets and the gas outlets are arranged at the same end of the gas mixing pipe, and the air outlets and the gas outlets are sequentially arranged at intervals;
the gas mixing pipe is cylindrical;
A central shaft is arranged in the middle of the gas mixing pipe; the air diversion cavities are arranged at intervals along the circumferential direction of the central shaft, and the fuel gas diversion cavity is formed between every two air diversion cavities; the cross-sectional shape of each air guide cavity along the axial direction perpendicular to the central shaft is the same; the ratio of the cross-sectional areas of the gas diversion cavity to the air diversion cavity along the axial direction perpendicular to the central shaft is 2:1-1:20;
the air guide cavity is fan-shaped in cross section along the axial direction perpendicular to the central shaft;
A plurality of clapboards can be arranged in the gas mixing pipe at intervals in sequence, and an air diversion cavity or a gas diversion cavity is formed by surrounding the outer walls of every two clapboards and the gas mixing pipe, and the air diversion cavity and the gas diversion cavity are arranged at intervals in sequence; the air inlets and the gas inlets are sequentially arranged at intervals at one end of the gas mixing pipe; the air outlets and the gas outlets are sequentially arranged at intervals at the other end of the gas mixing pipe;
the extending direction of the air diversion cavity and the gas diversion cavity is the same as the extending direction of the central shaft and is parallel to the central shaft.
2. The mixer of claim 1 wherein said plurality of air-guiding cavities are uniformly spaced.
3. The mixer according to claim 1, wherein a plurality of the gas inlets are provided on an outer wall of the gas mixing tube and are arranged at intervals along a circumferential direction of the gas mixing tube;
The air inlets are arranged at the first end of the gas mixing pipe at intervals; the air outlets and the gas outlets are sequentially arranged at the second end of the gas mixing pipe at intervals.
4. The mixer of claim 3, further comprising a housing;
The shell is covered outside the gas mixing pipe; the inside of the shell is hollow, and two ends of the shell are open; the side wall of the shell is provided with a through hole, and the through hole is used for introducing fuel gas into the shell.
5. The mixer of claim 4, wherein an inner wall of the housing and an outer wall of the gas mixing tube form a gas buffer chamber.
6. The mixer of claim 4 wherein the housing is provided with a mixed gas passageway proximate the second end of the gas mixing tube;
The mixed gas channel is communicated with the air outlet and the gas outlet; the diameter of the mixed gas channel gradually decreases along the direction away from the air outlet.
7. The mixer of claim 4, wherein the first and second ends of the gas mixing tube are provided with first and second flanges, respectively;
The gas mixing pipe is fixedly connected with the shell through the first flange and the second flange.
8. A gas engine comprising a mixer according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711417754.7A CN108119261B (en) | 2017-12-22 | 2017-12-22 | Mixer and gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711417754.7A CN108119261B (en) | 2017-12-22 | 2017-12-22 | Mixer and gas engine |
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| Publication Number | Publication Date |
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| CN108119261A CN108119261A (en) | 2018-06-05 |
| CN108119261B true CN108119261B (en) | 2024-06-04 |
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| CN201711417754.7A Active CN108119261B (en) | 2017-12-22 | 2017-12-22 | Mixer and gas engine |
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| CN120530077A (en) * | 2023-01-20 | 2025-08-22 | 托普索公司 | Method for producing blue ammonia |
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| KR20070065050A (en) * | 2005-12-19 | 2007-06-22 | 현대자동차주식회사 | Vehicle Exhaust Gas Recirculation System |
| WO2012134293A1 (en) * | 2011-04-01 | 2012-10-04 | Heatmatrix Group B.V. | Device and method for mixing two fluids |
| CN103742911A (en) * | 2014-01-07 | 2014-04-23 | 天津城建大学 | Fully premixed fuel gas burner |
| CN207740094U (en) * | 2017-12-22 | 2018-08-17 | 湖南省力宇燃气动力有限公司 | mixer and gas engine |
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