Novel nanometer fuel mixing device and system

Abstract

The invention discloses a novel nano fuel mixing device and system, and relates to the technical field of fuel supply, the novel nano fuel mixing device comprises an oil tank, a low-pressure pump, a filter and a feeding device which are sequentially connected through a low-pressure pipeline, and a fuel disperser, a heat exchanger, a high-pressure pump, an ECU, an EDU, a high-pressure common rail, an oil injector and an oil return pipe which are sequentially connected through a high-pressure oil way. The fuel oil disperser is composed of a pressurization acceleration mechanism, a pressure gauge, a dispersion mechanism and a heat exchanger, the pressurization acceleration mechanism comprises a motor, an oil supply pump and a hydraulic pressurization pump, and the dispersion mechanism comprises a material feeding module and a homogenizing bin. The problems that the nano fuel cannot be rapidly obtained due to the fact that the nano additive cannot be efficiently and uniformly mixed in the fuel and the mixed fuel is poor in effect are solved, it is guaranteed that the nano additive fuel oil is rapidly prepared, and the uniformity and stability of the nano additive fuel oil in the fuel oil are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel supply, and in particular to a novel nano fuel mixing device and system. Background Art

[0002] In the fields of biology, food, cosmetics, and medicine, it is sometimes necessary to obtain very fine material particles through physical and mechanical methods. These methods mainly include solid-phase method, liquid-phase method, gas-phase method, and ultrasonic method. The solid-phase method mainly produces very fine material particles through solid-state grinding, the gas-phase method mainly uses high-speed airflow impact, and the ultrasonic method mainly produces very fine material particles through frequency-modulated vibration.

[0003] Jet homogenization technology is currently used in the pharmaceutical industry for the preparation of fat emulsions, microemulsions, liposomes, nanosuspensions, and nanoparticles; in biotechnology products for cell disruption, microencapsulation, and vaccine adjuvants; in the food and beverage industry for homogenization and emulsification to improve the stability, taste, appearance, and encapsulation of nutrients in food; in the cosmetics and fine chemicals industries for uniform dispersion, enhancing product functionality, adding value, and ensuring process stability; and in the dispersion and exfoliation of conductive and resistor pastes, graphene, carbon nanotubes, and nanooxides. Despite its widespread application, this technology has not yet been applied to the preparation of nanofuels, but jet homogenization technology is currently an excellent method for preparing nanofuels. Summary of the Invention

[0004] (1) Technical problems solved In view of the shortcomings of the existing technology, the present invention provides a new nano-fuel mixing device and system, which solves the technical problems mentioned in the background technology.

[0005] (2) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: a novel nano-fuel mixing device, comprising a dispersion device, the dispersion device being used to fully mix a high-speed jet of fuel with an additive, the inlet of the dispersion device being the inlet of a homogenizing zone, the outlet of the dispersion device being the outlet of the homogenizing zone, a micron-scale channel being provided in the homogenizing zone, the micron-scale channel comprising a plurality of upper-dividing micron-scale channels and a plurality of lower-dividing micron-scale channels, a vertical channel with high shear and high collision effects, and an outlet channel, the vertical channel being perpendicular to the outlet channel, the outlet of the upper-dividing micron-scale channel being connected to the vertical channel, the micron-scale channel of the lower-dividing micron-scale channel being connected to the vertical channel, the middle section of the vertical channel being a counter-jet zone, the fuel flowing out of the upper-dividing micron-scale channel and the fuel flowing out of the lower-dividing micron-scale channel colliding with each other in the counter-jet zone; When the high-speed jet of fuel containing additives enters the micron-sized channels in the homogenizing zone, the pressure decreases and the flow rate increases. When the pressure drops to a level lower than the saturated vapor pressure of the fuel, the bubbles in the fuel will continue to expand and increase in volume, causing cavitation. When a high-speed jet of fuel with additives enters the vertical channel, a strong shearing effect is generated due to the surface tension of the liquid and the fine friction inside, causing the suspended droplets to break down into smaller particles. When a high-speed jet of fuel containing additives enters the counter-jet zone, the fuel particles collide with each other, and the particle collision, cavitation and shear force in the fuel fluid act together on the tiny fuel molecules. These changes cause the bubbles generated by the cavitation effect to collapse and burst. At the same time, the impact force generated during the collision process can overcome the surface tension of the fuel droplets, causing the droplets to break up.

[0006] Preferably, when the high-speed jet fuel containing additives enters the micron-sized channel of the homogenizing zone, the flow velocity is greater than 500 m / s.

[0007] Preferably, the inner diameter of the micron-scale channel is greater than 50 μm.

[0008] A novel nano fuel mixing system comprises a pressurizing and accelerating mechanism connected to an inlet of a dispersion device and used for pressurizing fuel with additives.

[0009] Preferably, a constant temperature oil bath is included, the outlet of the constant temperature oil bath is connected to the inlet of the supercharging acceleration mechanism, and the constant temperature oil bath is used to keep the fuel with the additive at a constant temperature.

[0010] Preferably, the outlet of the dispersion device is sequentially connected to a heat exchanger, a high-pressure fuel supply pump, an ECU, an EDU, a current limiting module, and a fuel injector.

[0011] Preferably, the flow limiting module includes a pressure sensor, a flow limiter, and a common oil rail.

[0012] Preferably, an oil return pipe is provided, which is connected to the fuel injector and is used to recover unatomized fuel.

[0013] Preferably, it comprises an oil tank, a low-pressure oil supply pump, and a filter, and the oil tank outlet is sequentially connected to the low-pressure oil supply pump, the filter, and a constant temperature oil bath.

[0014] Preferably, a feeding device is connected above the constant temperature oil bath.

[0015] (3) Beneficial effects The present invention provides a novel nano-fuel mixing device and system. It has the following beneficial effects: This novel nanofuel mixing device and system uses a pressurized acceleration mechanism to impart kinetic energy to the mixed fuel, generating a high-speed liquid jet that enters a dispersion mechanism. By diverting the fluid and directing it into tiny, laser-modified micron-scale channels, the fluid velocity rapidly increases (jet velocities can reach 500 m / s at the diamond microchannels), significantly reducing pressure. (According to Bernoulli's principle, there is a balance between pressure and velocity in a fluid; as a fluid passes through a narrow channel or pore, its velocity increases and its pressure decreases accordingly.) When the liquid pressure falls below the saturated vapor pressure, bubbles within the liquid continue to expand and increase in volume, triggering cavitation. In the high-shear zone, the surface tension of the liquid and the microscopic internal friction create intense shear, breaking the suspended droplets into smaller particles. After initial homogenization, the two jets collide. During the interplay between the fuel particles, particle collisions, cavitation, and shear forces within the fluids act together on the tiny fuel molecules. These changes cause the bubbles generated by the cavitation effect to collapse and burst. Simultaneously, the impact force generated during the collision overcomes the surface tension of the droplets, causing them to break apart. In summary, the jets undergo multiple collisions, fragmentation, and shearing within the chamber, reducing the material to nanometer-scale particle size. The treated material is then discharged from the chamber, completing the homogenization process. The homogenized mixed fuel is transparent and free of sediment, demonstrating excellent homogenization results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 Schematic diagram of the system of the present invention.

[0017] In the figure: 1; oil cabinet; 2. low-pressure pipeline; 3. low-pressure oil supply pump; 4. filter; 5. feeding device; 6. constant temperature oil bath; 7. pressurization acceleration mechanism; 8. pressure gauge; 9. dispersion mechanism; 10. heat exchanger; 11. high-pressure oil supply pump; 12. high-pressure pipeline; 13. ECU; 14. EDU; 15. injector; 16. pressure sensor; 17. flow limiter; 18. common oil rail; 19. oil return pipe.

[0018] Figure 1 The yellow line in the middle simulates the flow direction of the oil, the red circle is the collision and the area with strong shearing effect, and the blue circle indicates the impact of two jets on each other. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The present invention uses a liquid phase method, which is different from the current high-pressure homogenizer. In the preparation of nano diesel, stirring and ultrasonic vibration methods are commonly used to prepare its mixed suspension. However, in experiments, obvious precipitation is often seen and the stirring and ultrasonic vibration times are long. It takes at least 10 minutes to process a batch of fuel. Because the mixing effect is poor and the preparation time is long, the use effect of the nano fuel is affected. In addition, the ordinary fuel supply system cannot ensure that the nano fuel is in a good mixing state when it is supplied.

[0021] The fuel supply mode of the new nano high-pressure common rail system is as follows: oil tank 1 - low-pressure fuel pump 2 - filter 4 - feeding device 5 - fuel disperser boost acceleration mechanism 7 - dispersion mechanism 9 - heat exchanger 10 - high-pressure fuel pump 11 - ECU 13 - EDU 14 - injector 15 Oil tank 1: provides fuel for the entire system; Low-pressure pump 3: provides power for delivering fuel to the system; Filter 4: Filters the fuel and removes impurities; Feeding device 5: Located on the top of device 6, the feeding amount can be controlled by variable frequency speed regulation, and suitable nano additives and dispersants can be automatically added quantitatively, and it has moisture-proof function; Constant temperature oil bath 6: to meet the temperature of initial mixing; Boosting and accelerating mechanism 7: enables the fuel to enter the dispersion mechanism with a certain pressure and speed; Pressure gauge 8: observe the pressure reading at the outlet of the boost acceleration mechanism 7; Dispersion Mechanism 9: The core device is the homogenizing chamber. Its chamber is a monolithic, fixed-structure micron-scale channel with pore sizes ranging from 50 to several hundred microns. Made of diamond, it better meets dispersion and pulverization requirements than other chamber types. The manufactured chamber boasts extremely high thermal and chemical stability, making it suitable for applications requiring fine dispersion. The mixed fuel gains kinetic energy through the booster acceleration mechanism, generating a high-speed liquid jet that enters the dispersion mechanism. By diverting the fluid flow and directing it into the laser-modified micron-scale channels, the flow velocity rapidly increases (jet velocities can reach 500 m / s at the diamond micropores), significantly reducing pressure. (According to Bernoulli's principle, there is a balance between pressure and velocity in a fluid: as a fluid passes through a narrow channel or pore, its velocity increases and its pressure decreases accordingly.) When the liquid pressure falls below the saturated vapor pressure, bubbles within the liquid expand and increase in volume, triggering cavitation. In the high-shear zone, the surface tension of the liquid and the microscopic internal friction create intense shear, breaking the suspended droplets into smaller particles. After initial homogenization, the two jets collide. During the interplay between the fuel particles, particle collisions, cavitation, and shear forces within the fluids act together on the tiny fuel molecules. These changes cause the bubbles generated by the cavitation effect to collapse and burst. Simultaneously, the impact force generated during the collision overcomes the surface tension of the droplets, causing them to break apart. In summary, the jets undergo multiple collisions, fragmentation, and shearing within the chamber, reducing the material to nanometer-scale particle size. The treated material is then discharged from the chamber, completing the homogenization process. The homogenized mixed fuel is transparent and free of sediment, demonstrating excellent homogenization results.

[0022] Heat exchanger 10: ensures that the mixed fuel is at the appropriate temperature.

[0023] High-pressure pump 11: delivers high-pressure oil to the high-pressure common rail system to ensure the sum of the injection volume and the control oil volume of the diesel engine under any circumstances, as well as the oil volume change requirements during starting and acceleration; ECU13: ECU precisely controls the fuel injection amount, injection timing and injection pressure according to the engine's needs, thereby ensuring optimal fuel combustion. By monitoring various engine operating parameters in real time, it adjusts fuel injection, ignition advance angle, etc. to optimize engine performance. EDU14: Cooperate with ECU to control fuel injection; Injector 15: Based on the control signal from the ECU, it controls the opening and closing of the solenoid valve to inject the fuel in the high-pressure fuel rail into the combustion chamber of the diesel engine with the optimal injection timing, injection amount and injection rate; Pressure sensor 16: connected through the ECU, when the fuel rail pressure exceeds the preset value, it automatically releases excess pressure to prevent the system from over-pressurizing and protect the system components from damage. Flow limiter 17: used to limit the maximum flow rate of fuel output under a certain pressure to ensure that the engine will not burn unstablely due to excessive fuel supply when under high load or high speed; Common rail 18: The common rail pipe distributes the high-pressure fuel provided by the fuel pump to each injector, playing the role of pressure accumulation.

[0024] Fuel from tank 1, driven by a low-pressure pump 3, enters filter 4 via low-pressure oil pipe 2. The filter performs a preliminary filtration of the fuel, removing impurities. The filtered fuel then enters mixing device 6. Nanoparticles and dispersant enter the mixing device through feed port 5 for preliminary mixing. The device contains a constant-temperature oil bath to ensure the appropriate temperature for initial mixing. The mixed fuel then enters the fuel disperser, where a booster and acceleration mechanism 7 pressurizes and accelerates the nanofuel, generating a high-speed liquid jet. This jet then undergoes shearing in the high-frequency shear zone within the diamond cavity and cross-collision within the dispersion mechanism 9. When the high-pressure fluid enters the cavity, the sudden reduction in pipe diameter and pressure release dramatically increase the velocity of the coarse emulsion, generating intense shearing and breaking the emulsion droplets into smaller particles. After initial homogenization, the high-speed fluids collide with each other, further causing the droplets to break up and merge. The impact force generated during these collisions overcomes the surface tension of the droplets, causing them to break up. Combined with the instantaneous pressure drop and the cavitation effect (when liquid flows through a microcavity at high speed, a significant pressure drop occurs. When the pressure drops to the liquid's saturated vapor pressure, the liquid begins to boil and rapidly vaporizes, forming numerous bubbles. As the liquid flows out, the pressure rapidly increases, causing the bubbles to suddenly burst and instantly forming numerous cavitations. These cavitations release a large amount of energy, generating high-frequency vibrations that break up the droplets), this instantaneous, ultra-high-energy composite physical action achieves nanoscale uniformity and refinement. The resulting uniform nanofuel suspension then enters the heat exchanger 10 and, through the high-pressure pump 11, enters the high-pressure common rail system. This system, controlled by the ECU, delivers fuel to the injectors 15 mounted on the engine cylinder head. The ECU precisely controls the timing, quantity, and pressure of fuel injection. The EDU controls and coordinates fuel injection.

[0025] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0026] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A novel nano fuel mixing device, comprising a dispersion device (9), wherein the dispersion device (9) is used to fully mix a high-speed jet of fuel with an additive, wherein the inlet of the dispersion device (9) is the inlet of a homogenizing zone, and the outlet of the dispersion device (9) is the outlet of the homogenizing zone, and wherein: The homogenizing zone is provided with a micron-sized channel, which includes a plurality of upper-dividing micron-sized channels and a plurality of lower-dividing micron-sized channels, a vertical channel with high shear and high collision effects, and an outlet channel. The vertical channel is perpendicular to the outlet channel. The outlet of the upper-dividing micron-sized channel is connected to the vertical channel, and the lower-dividing micron-sized channel is connected to the vertical channel. The middle section of the vertical channel is a counter-jet zone, and the fuel flowing out of the upper-dividing micron-sized channel and the fuel flowing out of the lower-dividing micron-sized channel collide with each other in the counter-jet zone. When the high-speed jet of fuel containing additives enters the micron-sized channels in the homogenizing zone, the pressure decreases and the flow rate increases. When the pressure drops to a level lower than the saturated vapor pressure of the fuel, the bubbles in the fuel will continue to expand and increase in volume, causing cavitation. When the high-speed jet of fuel with additives enters the vertical channel of the homogenization zone, a strong shearing effect is generated due to the surface tension of the liquid and the fine friction inside, causing the suspended droplets to break up into smaller particles; When a high-speed jet of fuel containing additives enters the counter-jet zone, the fuel particles collide with each other, and the particle collision, cavitation and shear force in the fuel fluid act together on the tiny fuel molecules. These changes cause the bubbles generated by the cavitation effect to collapse and burst. At the same time, the impact force generated during the collision process can overcome the surface tension of the fuel droplets, causing the droplets to break up.

2. A novel nano-fuel mixing device according to claim 1, characterized in that: When the high-speed jet fuel containing additives enters the micron-sized channel in the homogenizing zone, the flow rate is greater than 500 m / s.

3. A novel nano-fuel mixing device according to claim 1, characterized in that: The inner diameter of the micron-scale channel is greater than 50 μm.

4. A novel nanofuel mixing system according to any one of claims 1 to 3, characterized in that: The invention comprises a pressure-boosting acceleration mechanism (7), wherein the pressure-boosting acceleration mechanism (7) is connected to the inlet of the dispersion device (9), and the pressure-boosting acceleration mechanism (7) is used to pressurize the fuel containing the additive.

5. A novel nano-fuel mixing system according to claim 4, characterized in that: The invention comprises a constant temperature oil bath (6), the outlet of the constant temperature oil bath (6) is connected to the inlet of the supercharging acceleration mechanism (7), and the constant temperature oil bath (6) is used to keep the fuel of the additive at a constant temperature.

6. A novel nano-fuel mixing system according to claim 4, characterized in that: The outlet of the dispersion device (9) is sequentially connected to a heat exchanger (10), a high-pressure fuel supply pump (11), an ECU (13), an EDU (14), a current limiting module, and a fuel injector (15).

7. A novel nano-fuel mixing system according to claim 6, characterized in that: The flow limiting module comprises a pressure sensor (16), a flow limiter (17), and a common oil rail (18).

8. The novel nano-fuel mixing system according to claim 6 is characterized by: The fuel return pipe (19) is connected to the fuel injector (15) and is used to recover unatomized fuel.

9. The novel nano-fuel mixing system according to claim 5 is characterized by: It comprises an oil cabinet (1), a low-pressure oil supply pump (3), and a filter (4); the outlet of the oil cabinet (1) is connected to the low-pressure oil supply pump (3), the filter (4), and a constant-temperature oil bath (6) in sequence.

10. A novel nano-fuel mixing system according to claim 9, characterized in that: A feeding device (5) is connected above the constant temperature oil bath (6).

Images