CN214944615U - Gas machine multipoint injector and gas machine gas mixture optimization system - Google Patents
Gas machine multipoint injector and gas machine gas mixture optimization system Download PDFInfo
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- CN214944615U CN214944615U CN202121027063.8U CN202121027063U CN214944615U CN 214944615 U CN214944615 U CN 214944615U CN 202121027063 U CN202121027063 U CN 202121027063U CN 214944615 U CN214944615 U CN 214944615U
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- 239000000203 mixture Substances 0.000 title claims abstract description 25
- 238000005457 optimization Methods 0.000 title claims description 8
- 238000002347 injection Methods 0.000 claims abstract description 88
- 239000007924 injection Substances 0.000 claims abstract description 88
- 238000002485 combustion reaction Methods 0.000 claims abstract description 34
- 239000007921 spray Substances 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 11
- 238000007906 compression Methods 0.000 abstract description 9
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- 238000009792 diffusion process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 201
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 18
- 239000002737 fuel gas Substances 0.000 description 9
- 239000003345 natural gas Substances 0.000 description 6
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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- 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
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- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model belongs to the technical field of gaseous machine, concretely relates to gaseous quick-witted multiple spot sprayer and gaseous quick-witted gas mixture optimizing system. The injector comprises a high-speed gas injection valve, a gas multi-point injection structure, an air pipeline and a gas pipeline, wherein the gas multi-point injection structure is a hollow structure, spray holes are circumferentially arranged on the gas multi-point injection structure, so that gas can be circumferentially injected, a cross-shaped structure is arranged in the gas multi-point injection structure, and the spray holes are arranged on the cross-shaped structure, so that the gas can be radially injected; the high-speed gas injection valve supplies gas in the gas pipeline to the gas multi-point injection structure, and the gas is injected in the circumferential direction and the radial direction through the gas multi-point injection structure and then is fully mixed with air provided by the air pipeline. The strong turbulence combustion chamber with the asymmetrically arranged pit structure can improve the average turbulence energy in the cylinder, accelerate the diffusion speed of gas in the cylinder and promote the formation quality of mixed gas in the cylinder in the processes of gas inlet and compression.
Description
Technical Field
The utility model belongs to the technical field of gaseous machine, concretely relates to gaseous quick-witted multiple spot sprayer and gaseous quick-witted gas mixture optimizing system.
Background
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information constitutes prior art that is already known to a person skilled in the art.
The natural gas source is wide, and besides conventional natural gas, coal bed gas, landfill gas, shale gas, combustible ice and the like store a large amount of natural gas. Methane is the main component of natural gas, and the carbon-hydrogen atomic ratio of the methane is 1: 4, is a hydrocarbon compound having the smallest hydrocarbon ratio, and CO is generated from methane under the condition of generating the same amount of heat2The amount of the additive is 25 percent less than that of gasoline, and the additive is beneficial to reducing the emission of greenhouse gases. Gas engines burning CNG or LNG are currently used in a large number in the transportation industry, and low-speed and high-power gas is mainly used in the fields of power generation, natural gas pipeline compressors, other fixed mechanical power and the like. The quality of formed mixed gas determines the in-cylinder combustion performance, and the improvement of the quality of formed mixed gas is an important direction for improving the performance of a gas engine.
At present, natural gas engines mainly adopt the following three modes for supplying fuel gas and forming combustible mixed gas: mixer, port injection, and direct in-cylinder injection. The mixed gas mode has simple structure and low cost, but the tempering problem of the air inlet pipe is easily induced; the in-cylinder direct injection can improve the performance of the gas engine, but has the problems of complex structure and high cost of a control system; in contrast, the air inlet injection mode has both performance and cost, and is widely applied to the gas engine for the vehicle at present, but the combustion performance is difficult to improve due to the limited quality of the mixed gas obtained by the injection mode, and the application of the air inlet injection mode to the high-power engine is not popularized yet.
SUMMERY OF THE UTILITY MODEL
The utility model provides a multipoint injector suitable for high-power gas machine and gas machine gas mixture optimization system comprising the injector, the injector is an air inlet passage multipoint injection structure, the circumferential and radial injection of gas in an air inlet pipe can be realized through the gas multipoint injection structure, the contact area of the gas and the air is increased, and the formation quality of gas mixture in the air inlet process is improved; moreover, the strong turbulence combustion chamber in the gas machine gas mixture optimization system can improve the formation quality of the gas mixture in the compression process, and the combustion performance of the gas machine can be improved through the cooperative work of the two structures, so that the gas machine is suitable for high-power gas machines.
In order to achieve the purpose, the utility model provides a gas engine multipoint injector in a first aspect, which comprises a high-speed gas injection valve, a gas multipoint injection structure, an air pipeline and a gas pipeline;
the gas multi-point injection structure is a hollow structure, spray holes are circumferentially arranged on the gas multi-point injection structure, so that gas can be circumferentially injected, a cross-shaped structure is arranged in the gas multi-point injection structure, and the spray holes are arranged on the cross-shaped structure, so that the gas can be radially injected;
the high-speed gas injection valve supplies gas in the gas pipeline to the gas multi-point injection structure, and the gas is injected in the circumferential direction and the radial direction through the gas multi-point injection structure and then is fully mixed with air provided by the air pipeline.
The utility model provides a gas machine gas mixture optimization system in a second aspect, which comprises a gas machine multipoint ejector and a strong turbulent combustion chamber;
an asymmetrical pit structure is arranged in the strong turbulence combustion chamber;
the gas and the air are mixed in the multipoint ejector of the gas machine and then enter the strong turbulence combustion chamber for further uniform mixing and combustion.
One or more embodiments of the present invention have the following advantageous effects:
(1) the utility model provides a gas engine multipoint injector adopts circumferential and radial gas injection scheme, can effectively increase the contact area of gas and air, fully utilizes the space mixing of gas and air, improves the formation quality of mixed gas, and improves the combustion performance of the gas engine;
(2) the utility model discloses a strong torrent combustion chamber of asymmetric arrangement pit structure, there is the skew in the center of this combustion chamber and cylinder center, can form strong anti-tumble through asymmetric pit in the jar, improves the interior average turbulent kinetic energy of jar for the diffusion velocity of gas in the jar further improves the formation quality of gas mixture. The pit position can be at the last stage of the compression stroke, so that the swirl center of the gas flow in the cylinder moves to the vicinity of the spark plug, the concentration of the mixed gas near the spark plug is improved, and the ignition and combustion of the gas engine are facilitated.
(3) The utility model provides a gas engine multiple spot sprayer and gas engine gas mixture optimizing system can give the excellent combustion performance of gas engine for the intake duct sprays technique and can wide application in high-power engine.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
FIG. 1 is a schematic view of a gas engine multiple point injector.
Fig. 2 is an installation schematic diagram of a gas multi-point injection structure.
Fig. 3 is a nozzle arrangement scheme of the gas multi-point injection structure.
FIG. 4 is a schematic diagram of a highly turbulent combustor with an asymmetric dimple arrangement.
The system comprises an air filter 1, a supercharger 2, an air release valve 3, an intercooler 4, an electronic throttle valve 5, an air pipeline 6, an exhaust pipe 7, an engine cylinder cover 8, an air inlet manifold 9, a high-speed gas injection valve 10, a gas pipeline 11, a gas filter 12, a pressure regulating valve 13, a gas cut-off electromagnetic valve 14, a gas inlet channel 15, a gas multi-point injection structure 16, a pit 17 and a reverse tumble flow 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses a first aspect provides a gas machine multipoint injector, which comprises a high-speed gas injection valve, a gas multipoint injection structure, an air pipeline and a gas pipeline;
the gas multi-point injection structure is a hollow structure, spray holes are circumferentially arranged on the gas multi-point injection structure, so that gas can be circumferentially injected, a cross-shaped structure is arranged in the gas multi-point injection structure, and the spray holes are arranged on the cross-shaped structure, so that the gas can be radially injected;
the high-speed gas injection valve supplies gas in the gas pipeline to the gas multi-point injection structure, and the gas is injected in the circumferential direction and the radial direction through the gas multi-point injection structure and then is fully mixed with air provided by the air pipeline.
Wherein, the utility model discloses a to gas multiple spot injection structure improve, the round orifice is arranged to circumference, spouts gas circumference into, and inside adopts cross-shaped structure, arranges the orifice on cross-shaped structure, realizes radial injection, makes it have circumference and radial two kinds of injection mode simultaneously, can effectively increase the area of contact of gas and air through the combined action of two kinds of injection modes, realizes gas and air homogeneous mixing in gas multiple spot injection structure, improves the combustion performance of gas machine.
The high-speed gas injection valve is connected with the gas multi-point injection structure, in order to guarantee accurate gas supply, the gas injection valve is required to have enough responsiveness and can be opened and closed quickly, the inlet of the gas injection valve is connected with a gas supply pipeline, and the outlet of the gas injection valve is connected with the gas multi-point injection structure. The gas injection valve receives the instruction of the control signal, is quickly opened at the required injection time, supplies gas to the gas multi-point injection structure, and cuts off the gas supply according to the control instruction.
The utility model discloses an among one or more embodiments, the cross structure is the wedge structure, and is little with the windward area of admitting air contact side, can reduce the air resistance like this, under the prerequisite that does not influence gas dynamic, improves the formation quality of gas mixture.
The utility model discloses an in one or more embodiments, gas multiple spot injection structure is connected to the cylinder cap of each jar of gas machine on, and gas multiple spot injection structure has two entries and an export, and one of them entry links to each other with high-speed gas injection valve, and another entry links to each other with air pipeline, and the gas outlet links to each other with the intake duct of gas machine. The gas and the air are mixed in the gas multi-point injection structure and flow through the outlet of the gas multi-point injection structure to enter the air inlet channel of the gas engine. Therefore, the gas mixture that forms in the gas multiple spot injection structure can get into the combustion chamber through shorter intake duct, when the condition of load sudden change appears in the transient operating mode in the gas machine, can the quick adjustment of quick adjustment gas supply through high-speed gas injection valve, realizes the quick adjustment of gas mixture concentration, and this structural setting can effectively improve the transient response performance of gas machine.
In order to ensure the safety of the whole gas engine, a gas cut-off electromagnetic valve is arranged on the gas pipeline, and when the gas engine runs abnormally, the gas cut-off electromagnetic valve can cut off the gas supply according to a control instruction.
Further, a gas filter and a pressure regulating valve are arranged between the gas pipeline and the gas cut-off electromagnetic valve; in order to ensure that the fuel gas supplied to the high-speed fuel gas injection valve meets the requirements, a fuel gas filter and a pressure regulating valve are arranged on a fuel gas pipeline. Wherein the gas filter is used for filtering impurities in the gas to prevent blocking the gas injection valve. The pressure regulating valve is used for regulating the pressure of the supplied fuel gas to obtain stable supply pressure.
In one or more embodiments of the present invention, an air filter is disposed on the air line for filtering air entering the air machine to remove impurities;
furthermore, a supercharger is arranged on the air pipeline, the air inflow is increased by utilizing the exhaust energy of the gas engine, the dynamic property of the gas engine is effectively improved, and in order to ensure that the supercharging pressure meets the requirement, an air discharge valve is also arranged to adjust the supercharging pressure;
furthermore, the air pipeline is provided with an intercooler, and the air passing through the supercharger is cooled by the intercooler; the air pipeline is also provided with an electronic throttle valve, and the air inflow is adjusted through the electronic throttle valve.
The utility model provides a gas machine gas mixture optimization system in a second aspect, which comprises a gas machine multipoint ejector and a strong turbulent combustion chamber;
an asymmetrical pit structure is arranged in the strong turbulence combustion chamber;
the gas and the air are mixed in the multipoint ejector of the gas machine and then enter the strong turbulence combustion chamber for further uniform mixing and combustion.
The combustion chamber structure can form two strong reverse tumble flows, the reverse tumble flows rotate around the anticlockwise direction in a tangent plane, the inside of a cylinder is divided into two tumble flow rotating centers, and the strong tumble flows can accelerate the diffusion speed of mixed gas in the cylinder; the combustion chamber can effectively increase the average turbulent kinetic energy in the cylinder, increase the scale of the vortex in the cylinder and accelerate the diffusion speed of the fuel gas in the cylinder, so that the mixed gas in the cylinder is more uniformly distributed, and the quality of the mixed gas is favorably improved. In addition, the asymmetrically arranged pits enable the swirl center of the gas flow in the cylinder to move towards the vicinity of the spark plug at the end of a compression stroke, so that the concentration of the mixed gas near the spark plug is improved, and the ignition and combustion of the gas engine are facilitated.
Wherein, the gas gets into the jar, experiences air intake stroke and compression stroke, and in these two stages, gas and air need carry out intensive mixing, just can be better satisfy the burning demand of high-power gas machine. In contrast, in the intake stroke stage, the gas and the air are mixed in the ejector, the utility model discloses an adopt the gas multiple spot injection structure, and set up the gas multiple spot injection structure into the structure that the gas can carry out circumference and radial injection, can effectively increase the area of contact of gas and air, improve the formation quality of the process gas mixture that admits air; at the compression stroke stage, the structure of combustion chamber can exert an influence to the formation process of gas mixture, the utility model provides an adopt strong torrent combustion chamber structural scheme, utilize asymmetric arrangement pit structure, the formation quality of gas mixture can further be improved in the air current motion in the reinforcing jar. The utility model discloses a cooperative control of air inlet process and compression process can show the formation quality that improves gas engine gas mixture, and then effectively improves the performance of gas engine.
Further, the depth of the pit is as follows: 30-32 mm.
Example 1
The embodiment provides a multipoint injector of a gas engine, as shown in fig. 1, comprising a high-speed gas injection valve 10, a gas multipoint injection structure 16, an air pipeline 6 and a gas pipeline 11;
the gas pipeline 11 is sequentially provided with a gas cut-off electromagnetic valve 14, a pressure regulating valve 13 and a gas filter 12 along the gas flowing direction, the air pipeline 6 is sequentially provided with an air filter 1, a supercharger 2, a vent valve 3, an intercooler 4 and an electronic throttle valve 5 along the air flowing direction, and the supercharger increases the air inflow by using the exhaust energy of the gas engine exhaust pipe 7.
As shown in fig. 2, the gas multi-point injection structure 16 is connected to the cylinder head 8 of each cylinder of the gas engine, and the gas multi-point injection structure 16 has two inlets and one outlet, wherein one inlet is connected to the high-speed gas injection valve 10 for supplying gas, the other inlet is connected to the intake manifold 9 of the air pipeline 6 for supplying air, and the outlet is connected to the intake passage 15 of the gas engine. Air enters the gas multi-point injection structure through the air inlet manifold 9, and gas injected by the high-speed gas injection valve 10 is sprayed out through radial and circumferential spray holes of the gas multi-point injection structure, mixed with the air and then enters the air inlet channel 15 of each cylinder.
As shown in fig. 3, a circle of spray holes are circumferentially arranged on the gas multi-point injection structure 16, so that circumferential injection of gas can be realized, and the gas is injected from outside to inside. The gas multi-point injection structure 16 has a cross structure inside, and a plurality of spray holes are arranged on the structure, so that radial injection of gas can be realized, and the gas is injected outwards from the cross structure. The two injection structures increase the injection area of the fuel gas, improve the contact area of the fuel gas and air, and further improve the formation quality of the mixed gas. The cross structure adopts a wedge-shaped structure, the windward area of the part facing the air inlet side is small, the air inlet resistance can be effectively reduced, and the forming quality of mixed air can be improved on the premise of not influencing the air inlet amount.
Example 2
The embodiment provides a gas engine mixture optimization system, which comprises the gas engine multipoint injector and the strong turbulence combustion chamber in the embodiment 1; be provided with pit structure 17 in the strong turbulence combustion chamber, this pit has adopted asymmetric arrangement scheme, can form 2 strong anti-tumble flows in the jar in compression stroke, can accelerate the diffusion velocity of gas mixture in the jar through strong tumble, increases the average turbulent kinetic energy in the jar for the diffusion velocity of gas in the jar, promotes the mixture of gas and air, improves the mixing quality of gas mixture in the jar. The gas and the air are mixed in the multipoint ejector of the gas machine and then enter the strong turbulence combustion chamber for further uniform mixing and combustion.
The asymmetrically arranged pits enable the swirl center of the airflow in the cylinder to move towards the vicinity of the spark plug at the last stage of the compression stroke, so that the concentration of the mixed gas near the spark plug is improved, and the ignition and combustion of the gas engine are facilitated.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.
Claims (10)
1. The utility model provides a gas machine multiple spot sprayer, includes high-speed gas injection valve, gas multiple spot injection structure, air pipeline and gas pipeline, its characterized in that: the gas multi-point injection structure is a hollow structure, spray holes are circumferentially arranged on the gas multi-point injection structure, so that gas can be circumferentially injected, a cross-shaped structure is arranged in the gas multi-point injection structure, and the spray holes are arranged on the cross-shaped structure, so that the gas can be radially injected;
the high-speed gas injection valve supplies gas in the gas pipeline to the gas multi-point injection structure, and the gas is injected in the circumferential direction and the radial direction through the gas multi-point injection structure and then is fully mixed with air provided by the air pipeline.
2. The gas engine multipoint injector of claim 1, wherein: the cross-shaped structure is a wedge-shaped structure.
3. The gas engine multipoint injector of claim 1, wherein: the gas multi-point injection structure is connected to a cylinder cover of each cylinder of the gas engine and is provided with two inlets and an outlet, wherein one inlet is connected with the high-speed gas injection valve, the other inlet is connected with the air pipeline, and the air outlet is connected with an air inlet channel of the gas engine.
4. The gas engine multipoint injector of claim 1, wherein: and a gas cut-off electromagnetic valve is arranged on the gas pipeline.
5. The gas engine multipoint injector of claim 4, wherein: and a gas filter and a pressure regulating valve are arranged between the gas pipeline and the gas cutting electromagnetic valve.
6. The gas engine multipoint injector of claim 1, wherein: an air filter is arranged on the air pipeline to filter impurities in the air.
7. The gas engine multipoint injector of claim 6, wherein: a supercharger is arranged on the air pipeline, and the air inlet amount is increased by utilizing the exhaust energy of the gas engine; and the air pipeline is also provided with an air bleed valve for regulating the pressurization pressure.
8. The gas engine multipoint injector of claim 7, wherein: the air pipeline is provided with an intercooler, and the air passing through the supercharger is cooled by the intercooler; the air pipeline is also provided with an electronic throttle valve, and the air inflow is adjusted through the electronic throttle valve.
9. The utility model provides a gas engine gas mixture optimizing system which characterized in that: comprising a gas engine multipoint injector according to any of claims 1 to 8 and a highly turbulent combustion chamber;
an asymmetrical pit structure is arranged in the strong turbulence combustion chamber;
the gas and the air are mixed in the multipoint ejector of the gas machine and then enter the strong turbulence combustion chamber for further uniform mixing and combustion.
10. The gas engine mixture optimization system of claim 9, wherein: the depth of the pits is: 30-32 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121027063.8U CN214944615U (en) | 2021-05-13 | 2021-05-13 | Gas machine multipoint injector and gas machine gas mixture optimization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121027063.8U CN214944615U (en) | 2021-05-13 | 2021-05-13 | Gas machine multipoint injector and gas machine gas mixture optimization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214944615U true CN214944615U (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121027063.8U Expired - Fee Related CN214944615U (en) | 2021-05-13 | 2021-05-13 | Gas machine multipoint injector and gas machine gas mixture optimization system |
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| Country | Link |
|---|---|
| CN (1) | CN214944615U (en) |
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2021
- 2021-05-13 CN CN202121027063.8U patent/CN214944615U/en not_active Expired - Fee Related
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Granted publication date: 20211130 |
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