Vehicle-mounted methanol reforming hydrogen and methanol gasification mixed internal combustion engine range extender

Abstract

The application provides an internal combustion engine range extender mechanism for vehicle-mounted methanol reforming hydrogen production and methanol gasification mixing, comprising a methanol tank for storing a mixed solution of methanol and deionized water; a methanol hydrogen production machine connected with the methanol tank at an input end; a methanol atomizer connected with the methanol tank at an input end; an ejector with two input ends respectively connected with an output end of the methanol hydrogen production machine and an output end of the methanol atomizer; and a hydrogen range extender connected with an output end of the ejector at an input end. The application has small volume and light weight. Since part of the energy in the mixed fuel comes from directly gasified or atomized methanol, the amount of required methanol reforming hydrogen production is reduced, thereby significantly reducing the volume and weight of the hydrogen production machine and solving the industry problem of large volume of vehicle-mounted methanol hydrogen production machine.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle power systems, and more particularly to an internal combustion engine range extender mechanism that combines on-board methanol reforming for hydrogen production with methanol gasification. Background Technology

[0002] Currently, hydrogen fuel cell vehicles both domestically and internationally primarily use 35MPa or 70MPa high-pressure hydrogen storage tanks to store hydrogen for power generation via hydrogen fuel cells. This technology has the following drawbacks: high-pressure hydrogen has poor safety, posing risks of leakage and explosion; the production, storage, transportation, and refueling of hydrogen are costly, resulting in persistently high end-user hydrogen prices; and hydrogen fuel cell systems are expensive and have an unsatisfactory lifespan.

[0003] To mitigate the safety risks and cost issues associated with high-pressure hydrogen storage, some research institutions and companies both domestically and internationally have attempted to develop on-board methanol reforming hydrogen production technology. This involves using methanol as a raw material to produce hydrogen on-site through a catalytic reforming reaction within a vehicle, directly supplying it to fuel cells or internal combustion engines. The theoretical advantages of this technology are: methanol is a liquid at room temperature and pressure, making storage and transportation convenient; it has a high energy density; and it can be produced from various sources, including natural gas, coal, biomass, and even carbon dioxide hydrogenation, making it widely available. However, it has failed or struggled to be widely adopted due to unreliable performance, inability to adapt to varying vehicle operating conditions, large size, high cost, and poor economic viability.

[0004] Regarding fuels, besides fuel cells, some research is exploring the direct use of hydrogen or methanol as internal combustion engine fuel. While hydrogen, when used directly as internal combustion engine fuel, produces primarily water vapor and zero carbon emissions, pure hydrogen internal combustion engines suffer from high hydrogen costs, hydrogen quenching of components, and poor combustion stability. Methanol has been studied as an internal combustion engine fuel for decades, but pure methanol internal combustion engines suffer from low thermal efficiency, severe corrosion of components, and incomplete combustion that easily produces formic acid. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of high cost and low safety of existing internal combustion engine range extenders, and to provide an internal combustion engine range extender that combines on-board methanol reforming for hydrogen production with methanol gasification.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution: The present invention provides an internal combustion engine range extender mechanism that combines on-board methanol reforming for hydrogen production and methanol vaporization, including a methanol tank for storing a mixed solution of methanol and deionized water. A methanol-to-hydrogen generator, wherein the input end of the methanol-to-hydrogen generator is connected to a methanol tank, and the methanol-to-hydrogen generator is used to perform a catalytic reforming reaction on a methanol solution to generate hydrogen-rich gas; A methanol atomizer, wherein the input end of the methanol atomizer is connected to a methanol tank, and the methanol atomizer is used to atomize or vaporize a methanol solution into methanol gas; An ejector, the two input ends of which are respectively connected to the output end of a methanol-to-hydrogen generator and the output end of a methanol atomizer, the ejector being used to mix hydrogen-rich gas with methanol gas to form a mixed fuel; A hydrogen range extender, the input of which is connected to the output of an ejector, is used to burn mixed fuels and drive a generator to generate electricity.

[0007] In this technical solution, since some of the energy in the mixed fuel comes from methanol that has been directly gasified or atomized, the amount of methanol reforming required to produce hydrogen is reduced, thereby significantly reducing the size and weight of the hydrogen generator and solving the industry problem of the large size of vehicle-mounted methanol hydrogen generators. No high-pressure hydrogen storage tank is required, reducing the risk of leakage and explosion.

[0008] Preferably, the methanol tank and the methanol-to-hydrogen generator, the methanol tank and the methanol atomizer, and the methanol atomizer and the ejector are all connected by silicone hoses. The methanol-to-hydrogen generator and the ejector are connected by a stainless steel pipe. The ejector and the hydrogen range extender are connected by a stainless steel flexible hose.

[0009] Preferably, the methanol solution stored in the methanol tank has a methanol to deionized water mass ratio of 60%-100% and 40%-0% respectively.

[0010] In this technical solution, the composition of the methanol solution in the methanol tank is confirmed.

[0011] Preferably, the catalytic reaction temperature of the methanol-to-hydrogen generator 5 is 300-390℃, and the pressure of the hydrogen-rich gas produced is 1.5-2MPa.

[0012] In this technical solution, the overall working pressure is only 1.5-2MPa, which greatly reduces the risk of leakage and explosion.

[0013] Preferably, the exhaust gas from the hydrogen range extender is divided into three stages according to temperature: a high-temperature stage, a medium-temperature stage, and a low-temperature stage. The high-temperature stage supplies the methanol-to-hydrogen generator, the medium-temperature stage supplies the methanol atomizer, and the low-temperature stage supplies the methanol tank. The exhaust pipe of the hydrogen range extender is connected to the methanol-to-hydrogen generator. The methanol-to-hydrogen generator is connected to the methanol atomizer through exhaust pipe one, and the methanol atomizer is connected to the methanol tank through exhaust pipe two.

[0014] This technical solution enables the efficient utilization of waste heat from the exhaust gas of the hydrogen range extender, reducing additional fuel consumption and lowering system size and cost.

[0015] Preferably, the methanol-to-hydrogen machine includes an outer insulation shell, a large heat-conducting cylinder and a small heat-conducting cylinder, the large heat-conducting cylinder and the small heat-conducting cylinder are connected to the inner wall of the outer insulation shell, and the small heat-conducting cylinder is disposed inside the large heat-conducting cylinder. The space between the outer insulation shell and the large heat-conducting cylinder is the catalytic combustion chamber, the space between the large heat-conducting cylinder and the small heat-conducting cylinder is the reforming reaction chamber, the space inside the small heat-conducting cylinder is the raw material preheating chamber, and the raw material preheating chamber is connected to the reforming reaction chamber through a feed pipeline.

[0016] In this technical solution, methanol reforming is used to produce hydrogen via a methanol-to-hydrogen generator.

[0017] Preferably, the exhaust pipe of the hydrogen range extender is connected to the inlet end of the heat exchange component, the heat exchange component is disposed in the catalytic combustion chamber, and the outlet end of the heat exchange component is connected to the exhaust pipe. The heat exchange assembly includes multiple corrugated annular shells, and multiple diffusion cylinders arranged in a ring array are disposed between two adjacent corrugated annular shells. The upper and lower centers of the diffusion cylinders are respectively connected to the two corrugated annular shells through connecting pipes.

[0018] In this technical solution, the residence time and area of ​​exhaust gas in the catalytic combustion chamber are increased by using heat exchange components, thereby improving the utilization rate of exhaust waste heat.

[0019] Preferably, the reforming reaction chamber is provided with a catalytic component and a mixing component. The catalytic component includes multiple mounting columns one and multiple mounting columns two, and the two ends of the mounting columns one and two are respectively connected to the inner wall of the outer insulation shell. The first mounting column is connected to a first spiral catalytic plate on its surface, and the second mounting column is connected to a second spiral catalytic plate on its surface.

[0020] In this technical solution, hydrogen-rich gas is generated by reacting methanol with a catalytic component.

[0021] Preferably, the mixing component includes a plurality of rotating shafts, and a plurality of mixing blades arranged in a ring array are connected to the surface of the rotating shafts; The top of the rotating shaft is connected to a secondary gear, and the sides of multiple secondary gears are meshed with the sides of the transmission gear ring. The transmission gear ring is meshed with the drive gear on its side, and the drive gear is connected to the output end of the power source.

[0022] In this technical solution, a mixing component is used to mix methanol gas, heat, etc. in the reforming reaction chamber.

[0023] Preferably, a spiral guide plate is provided inside the raw material preheating chamber, and the side of the spiral guide plate is connected to the inside of the small heat-conducting cylinder.

[0024] In this technical solution, a spiral guide plate is used to guide the methanol solution entering the raw material preheating chamber.

[0025] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0026] The positive and progressive effects of this invention are as follows: This invention is small in size and light in weight. Since part of the energy in the mixed fuel comes from the direct gasification or atomization of methanol, it reduces the amount of methanol reforming required to produce hydrogen, thereby significantly reducing the size and weight of the hydrogen generator and solving the industry problem of the large size of vehicle-mounted methanol hydrogen generators.

[0027] It is highly safe, requires no high-pressure hydrogen storage tank, and has an overall working pressure of only 1.5-2MPa, which greatly reduces the risk of leakage and explosion.

[0028] It has low cost; the cost of methanol as a raw material is much lower than that of high-pressure hydrogen, and it also eliminates the costs associated with the production, storage, transportation, and processing of hydrogen.

[0029] To mitigate hydrogen quenching and corrosion, a hydrogen-ethanol blended fuel is used to avoid hydrogen quenching caused by pure hydrogen, while also reducing the corrosion of engine parts by pure methanol.

[0030] It has high combustion efficiency and good stability. The combustion characteristics of the blended fuel are better than those of pure hydrogen or pure methanol, which improves thermal efficiency and operational stability.

[0031] It is economical, simple in design, has few parts, low manufacturing and maintenance costs, and has good commercial prospects. Attached Figure Description

[0032] Figure 1 This is a schematic diagram illustrating the structural principle of an internal combustion engine range extender mechanism that combines on-board methanol reforming for hydrogen production with methanol gasification, according to an embodiment of the present invention.

[0033] Figure 2 for Figure 1 The diagram shows a three-dimensional structure of the methanol hydrogen generator, methanol tank, and methanol atomizer in an onboard methanol reforming hydrogen production and methanol vaporization mixing internal combustion engine range extender. Figure 1 .

[0034] Figure 3 for Figure 2 The diagram shows a three-dimensional structure of the methanol hydrogen generator, methanol tank, and methanol atomizer in an onboard methanol reforming hydrogen production and methanol vaporization mixing internal combustion engine range extender. Figure 2 .

[0035] Figure 4 for Figure 2 The diagram shows a three-dimensional structure of a methanol-to-hydrogen generator that combines on-board methanol reforming with methanol gasification in an internal combustion engine range extender.

[0036] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the methanol-to-hydrogen generator in an internal combustion engine range extender system that combines onboard methanol reforming for hydrogen production with methanol vaporization. Figure 1 .

[0037] Figure 6 for Figure 5 The diagram shows a cross-sectional view of the methanol-to-hydrogen generator in an internal combustion engine range extender system that combines onboard methanol reforming for hydrogen production with methanol vaporization. Figure 2 .

[0038] Figure 7 for Figure 4 The diagram shows a three-dimensional structure of the heat exchange component of the internal combustion engine range extender mechanism that combines on-board methanol reforming for hydrogen production with methanol gasification.

[0039] Figure 8 for Figure 7 The diagram shows an exploded view of the heat exchange components of an internal combustion engine range extender that combines onboard methanol reforming for hydrogen production with methanol vaporization.

[0040] Figure 9 for Figure 4 The diagram shows a three-dimensional structural schematic of the catalytic converter and mixing unit of the internal combustion engine range extender mechanism that combines on-board methanol reforming for hydrogen production with methanol gasification.

[0041] Figure 10 for Figure 9 The diagram shows a three-dimensional structural schematic of the mixing component of an internal combustion engine range extender that combines on-board methanol reforming for hydrogen production with methanol gasification.

[0042] Figure 11 for Figure 10 The diagram shows a cross-sectional view of the mixing component of an internal combustion engine range extender that combines on-board methanol reforming for hydrogen production with methanol gasification.

[0043] Figure 12 for Figure 2 The diagram shows a three-dimensional structure of the exhaust pipe and heating components of an internal combustion engine range extender mechanism that combines methanol reforming for hydrogen production with methanol vaporization.

[0044] Figure 13 for Figure 12 The diagram shows a cross-sectional view of the exhaust pipe and heating assembly of an internal combustion engine range extender mechanism that combines methanol reforming for hydrogen production with methanol vaporization.

[0045] Figure 14 for Figure 13 The diagram shows a partially enlarged structural schematic of point A of the internal combustion engine range extender mechanism that combines on-board methanol reforming for hydrogen production with methanol vaporization.

[0046] Explanation of reference numerals in the attached figures 1. Hydrogen range extender; 2. Methanol tank; 3. Methanol atomizer; 4. Ejector; 5. Methanol-to-hydrogen generator; 6. Silicone hose; 7. Stainless steel tube; 8. Stainless steel hose; 9. Exhaust gas discharge pipe one; 10. Exhaust gas discharge pipe two; 11. External insulation shell; 12. Large heat-conducting cylinder; 13. Small heat-conducting cylinder; 14. Material conveying pipeline; 15. Heat exchange assembly; 151. Corrugated ring shell; 152. Diffuser cylinder; 153. Connecting pipes; 154. Fixed column; 16. Catalytic assembly; 161. Mounting column one; 162. Mounting column two; 163. First spiral catalytic plate; 164. Second spiral catalytic plate; 17. Mixing assembly; 171. Rotating shaft; 172. Mixing blade; 173. Secondary gear; 174. Transmission gear ring; 175. Drive gear; 176. Power source; 177. Protective housing; 178. Fixed track; 18. Spiral guide vane; 19. Insulation component; 191. External pipe; 192. Middle pipe; 193. Internal pipe; 194. First material pipe; 195. Second material pipe; 196. Transfer pump. Detailed Implementation

[0047] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0048] Figures 1 to 14 The diagram shown is a structural schematic of an embodiment of the internal combustion engine range extender mechanism that combines on-board methanol reforming for hydrogen production with methanol gasification according to the present invention.

[0049] An on-board methanol reforming hydrogen production and methanol gasification mixing internal combustion engine range extender includes a methanol tank 2, which is used to store a mixed solution of methanol and deionized water. The methanol-to-hydrogen generator 5 is connected to the methanol tank 2 at its input end. The methanol-to-hydrogen generator 5 is used to perform a catalytic reforming reaction on the methanol solution to generate hydrogen-rich gas. Methanol atomizer 3, the input end of methanol atomizer 3 is connected to methanol tank 2, methanol atomizer 3 is used to atomize or vaporize methanol solution into methanol gas; The methanol atomizer 3 uses the exhaust temperature of the internal combustion engine to vaporize methanol, or uses a high-pressure pump to atomize methanol.

[0050] Ejector 4, the two input ends of ejector 4 are connected to the output end of methanol hydrogen generator 5 and methanol atomizer 3 respectively. Ejector 4 is used to mix hydrogen-rich gas with methanol gas to form mixed fuel. The components of the blended fuel by volume percentage include: 40%-60% hydrogen, 15%-25% methanol, 15%-20% carbon dioxide, and 0.5%-2% carbon monoxide.

[0051] Hydrogen range extender 1, the input end of hydrogen range extender 1 is connected to the output end of ejector 4, hydrogen range extender 1 is used to burn mixed fuel and drive generator to generate electricity.

[0052] In this technical solution, since some of the energy in the mixed fuel comes from methanol that has been directly gasified or atomized, the amount of methanol reforming required to produce hydrogen is reduced, thereby significantly reducing the size and weight of the hydrogen generator and solving the industry problem of the large size of vehicle-mounted methanol hydrogen generators. No high-pressure hydrogen storage tank is required, reducing the risk of leakage and explosion.

[0053] This invention utilizes a relatively small space in a vehicle to reform methanol into hydrogen. Simultaneously, it uses the exhaust temperature of an internal combustion engine to vaporize methanol or uses a high-pressure pump to atomize methanol. An ejector 4 is used to mix the gas discharged from the methanol reforming hydrogen production with the vaporized or atomized methanol gas, which is then supplied to the internal combustion engine range extender for operation and power generation. Using methanol reforming to produce hydrogen and then mixing the resulting gas from methanol gasification or atomization to fuel an internal combustion engine can effectively solve the problem of the large size and heavy weight of a single methanol-to-hydrogen generator in a vehicle.

[0054] Internal combustion engines do not use pure hydrogen or pure methanol fuel, which greatly reduces the corrosion of engine parts by hydrogen quenching or methanol, and can improve combustion efficiency and the working stability of internal combustion engines.

[0055] Silicone hoses 6 are used to connect methanol tank 2 and methanol hydrogen generator 5, methanol tank 2 and methanol atomizer 3, and methanol atomizer 3 and ejector 4. A stainless steel pipe 7 connects the methanol-to-hydrogen generator 5 and the ejector 4. The ejector 4 and the hydrogen range extender 1 are connected by a stainless steel hose 8.

[0056] The methanol solution stored in methanol tank 2 has a methanol to deionized water mass ratio of 60%-100% and 40%-0% respectively.

[0057] In this technical solution, the composition of the methanol solution in methanol tank 2 is confirmed.

[0058] The catalytic reaction temperature of the methanol-to-hydrogen generator 5 is 300-390℃, and the pressure of the hydrogen-rich gas produced is 1.5-2MPa.

[0059] In this technical solution, the overall working pressure is only 1.5-2MPa, which greatly reduces the risk of leakage and explosion.

[0060] In operation, the methanol-to-hydrogen generator 5 is first preheated to a catalytic reforming chamber temperature of 300-390℃. Then, the methanol tank 2 outputs methanol solution to both the methanol-to-hydrogen generator 5 and the methanol atomizer 3. The methanol-to-hydrogen generator 5 then catalytically reforms the methanol solution to generate hydrogen-rich gas, which is then delivered to the ejector 4. Simultaneously, the methanol atomizer 3 atomizes or vaporizes the methanol solution into methanol gas, which is then delivered to the ejector 4. The ejector 4 then mixes the hydrogen-rich gas with the methanol gas to form a mixed fuel. Finally, the mixed fuel enters the hydrogen range extender 1 for combustion, driving the generator to generate electricity.

[0061] The catalytic reaction temperature inside the methanol-to-hydrogen generator 5 is 300-390℃, and the pressure of the produced hydrogen-rich gas is 1.5-2MPa.

[0062] The exhaust gas from the hydrogen range extender 1 is divided into three stages according to temperature: high temperature stage, medium temperature stage and low temperature stage. The high temperature stage supplies the methanol-to-hydrogen generator 5, the medium temperature stage supplies the methanol atomizer 3, and the low temperature stage supplies the methanol tank 2. The exhaust pipe of the hydrogen range extender 1 is connected to the methanol hydrogen generator 5. The methanol hydrogen generator 5 is connected to the methanol atomizer 3 through the exhaust pipe 1 9. The methanol atomizer 3 is connected to the methanol tank 2 through the exhaust pipe 2 10.

[0063] In this technical solution, the waste heat from the exhaust of the hydrogen range extender 1 can be efficiently utilized in stages, reducing additional fuel consumption and lowering system size and cost.

[0064] The methanol-to-hydrogen generator 5 includes an outer heat-insulating shell 11, a large heat-conducting cylinder 12, and a small heat-conducting cylinder 13. The large heat-conducting cylinder 12 and the small heat-conducting cylinder 13 are connected to the inner wall of the outer heat-insulating shell 11. The small heat-conducting cylinder 13 is located inside the large heat-conducting cylinder 12. The center lines of the outer heat-insulating shell 11, the large heat-conducting cylinder 12, and the small heat-conducting cylinder 13 are on the same vertical line. The space between the outer insulation shell 11 and the large heat-conducting cylinder 12 is the catalytic combustion chamber, the space between the large heat-conducting cylinder 12 and the small heat-conducting cylinder 13 is the reforming reaction chamber, the space inside the small heat-conducting cylinder 13 is the raw material preheating chamber, and the raw material preheating chamber is connected to the reforming reaction chamber through the conveying pipeline 14.

[0065] In this technical solution, methanol reforming to produce hydrogen is carried out through methanol hydrogen generator 5.

[0066] The conveying pipeline 14 is connected to the outlet end of the raw material preheating chamber and the inlet end of the reforming reaction chamber, respectively.

[0067] The methanol tank 2 is connected to the inlet end of the raw material preheating chamber and the inlet end of the catalytic combustion chamber.

[0068] The outlet end of the reforming reaction chamber is connected to the inlet end of the ejector 4.

[0069] The outer insulation shell 11, the large heat-conducting cylinder 12, and the small heat-conducting cylinder 13 have different diameters and are arranged sequentially from the outside to the inside.

[0070] The heat in the catalytic combustion chamber enters the reforming reaction chamber through the large heat-conducting cylinder 12 to provide heat for the reforming reaction; The heat in the reforming reaction chamber enters the raw material preheating chamber through the small heat-conducting cylinder 13 to preheat the methanol solution sent from the methanol tank 2. The preheated methanol solution is vaporized and then enters the reforming reaction chamber through the feed pipeline 14 to react and obtain hydrogen-rich gas.

[0071] The heat from the exhaust gas from the hydrogen range extender 1 can be used to heat the reforming reaction chamber within the catalytic combustion chamber; Utilizing exhaust waste heat requires no additional cost, but it can only be done when the hydrogen range extender 1 is operating.

[0072] In addition, a mixture of methanol and air can also enter the catalytic combustion chamber to carry out the catalytic combustion reaction and supply heat to the reforming reaction chamber; It requires additional methanol fuel and incurs some cost, but it can be used in any situation where heating is needed.

[0073] The two can be selected as needed: when the hydrogen range extender 1 is working, it can be selected to use exhaust waste heat, and when the hydrogen range extender 1 is not working, it can be selected to burn methanol.

[0074] The exhaust pipe of the hydrogen range extender 1 is connected to the inlet end of the heat exchange assembly 15, which is located inside the catalytic combustion chamber. The outlet end of the heat exchange assembly 15 is connected to one end of the exhaust pipe 9. The heat exchange assembly 15 includes multiple corrugated annular shells 151, and multiple diffuser cylinders 152 arranged in a ring array are provided between two adjacent corrugated annular shells 151. The upper and lower centers of the diffuser cylinders 152 are respectively connected to the two corrugated annular shells 151 through connecting pipes 153.

[0075] In this technical solution, the heat exchange component 15 increases the residence time and residence area of ​​exhaust gas in the catalytic combustion chamber, thereby improving the utilization rate of exhaust waste heat.

[0076] Multiple fixed posts 154 arranged in a ring array are connected to one side of the uppermost and lowermost wave-shaped ring shell 151. One end of the fixed post 154 is connected to the inner wall of the outer insulation shell 11.

[0077] The center lines of adjacent diffuser cylinders 152 are not on the same vertical line.

[0078] The uppermost corrugated ring shell 151 is connected to the exhaust pipe of the hydrogen range extender 1, and the lowermost corrugated ring shell 151 is connected to the exhaust pipe 9.

[0079] The reforming reaction chamber is equipped with a catalytic component 16 and a mixing component 17. The catalytic component 16 includes multiple mounting columns 161 and multiple mounting columns 162. The two ends of the mounting columns 161 and 162 are respectively connected to the inner wall of the outer insulation shell 11. The surface of mounting column 161 is connected to a first spiral catalyst plate 163, and the surface of mounting column 2 162 is connected to a second spiral catalyst plate 164.

[0080] In this technical solution, hydrogen-rich gas is generated by reacting methanol with catalytic component 16.

[0081] Both the first spiral catalyst plate 163 and the second spiral catalyst plate 164 are composed of a spiral catalyst support and a catalyst coated thereon.

[0082] Multiple mounting posts 161 are arranged in a circular array; Multiple mounting posts 2162 are arranged in a ring array.

[0083] The spiral directions of the first spiral catalytic plate 163 and the second spiral catalytic plate 164 are opposite.

[0084] In use, methanol vaporized from the raw material preheating chamber enters the reforming reaction chamber. The methanol gas comes into contact with the first spiral catalytic plate 163 and the second spiral catalytic plate 164, and reacts under the heat transferred from the catalytic combustion chamber to obtain hydrogen-rich gas.

[0085] The spiral arrangement of the first spiral catalyst plate 163 and the second spiral catalyst plate 164 can increase the contact area between the catalyst and the methanol gas, so that the methanol gas can fully contact and react with the catalyst.

[0086] The mixing component 17 includes a plurality of rotating shafts 171, and a plurality of mixing blades 172 arranged in a ring array are connected to the surface of the rotating shafts 171; A secondary gear 173 is connected to the top of the rotating shaft 171, and the sides of multiple secondary gears 173 are meshed with the sides of the transmission gear ring 174. The transmission gear ring 174 is meshed with the drive gear 175 on its side, and the drive gear 175 is connected to the output end of the power source 176.

[0087] In this technical solution, the methanol gas, heat, etc. in the reforming reaction chamber are mixed by the mixing component 17.

[0088] The bottom end of the rotating shaft 171 is rotatably connected to the inner wall of the bottom surface of the outer insulation shell 11, and the top end of the rotating shaft 171 is rotatably connected to the top surface of the outer insulation shell 11.

[0089] A protective housing 177 is provided on the outside of the auxiliary gear 173, the transmission gear ring 174 and the drive gear 175. The protective housing 177 is connected to the top of the outer insulation housing 11, and the power source 176 is installed on the top of the protective housing 177.

[0090] The top of the outer insulation shell 11 is connected to a fixed track 178, and the bottom of the transmission gear ring 174 is provided with a track groove. The fixed track 178 is slidably connected to the transmission gear ring 174 through the track groove. The cross-section of the fixed track 178 is a T-shaped structure.

[0091] When in use, the power source 176 drives the drive gear 175 to rotate, which in turn drives the transmission gear ring 174 to rotate, and then drives multiple auxiliary gears 173 to rotate. When the secondary gear 173 rotates, it drives the rotating shaft 171 to rotate, which in turn drives the mixing blade 172 to rotate. This mixes the methanol gas, heat, etc. in the reforming reaction chamber, allowing the methanol gas, heat and catalyst to come into full contact, improving reaction efficiency, avoiding reaction dead zones, and facilitating the generation of hydrogen-rich gas.

[0092] A spiral guide plate 18 is provided inside the raw material preheating chamber, and the side of the spiral guide plate 18 is connected to the inside of the small heat-conducting cylinder 13.

[0093] In this technical solution, the methanol solution entering the raw material preheating chamber is guided by the spiral guide plate 18.

[0094] In use, the methanol solution in methanol tank 2 enters the raw material preheating chamber, and then the methanol solution flows spirally along the spiral guide plate 18, increasing the residence time of the methanol solution in the raw material preheating chamber, so that the methanol solution can fully contact the heat transferred from the reforming reaction chamber, so that the methanol solution can be fully vaporized and prevent unvaporized methanol from entering the reforming reaction chamber.

[0095] The end of the exhaust pipe 10 away from the methanol atomizer 3 is connected to the inlet end of the insulation component 19. The insulation component 19 includes an outer pipe 191, a middle pipe 192 and an inner pipe 193. The middle pipe 192 is arranged inside the outer pipe 191, and the inner pipe 193 is arranged inside the middle pipe 192. The space between the outer pipe 191 and the middle pipe 192 is the outer heating chamber, the space between the middle pipe 192 and the inner pipe 193 is the material chamber, and the space inside the inner pipe 193 is the inner heating chamber. Exhaust gas discharge pipe 210 is connected to the external heating chamber and the internal heating chamber respectively; The material chamber is connected to the first material pipe 194 and the second material pipe 195 respectively, and one end of the first material pipe 194 and the second material pipe 195 is connected to the middle pipe 192 respectively. The other end of the first material pipe 194 is connected to the methanol tank 2, the other end of the second material pipe 195 is connected to the output end of the transfer pump 196, and the inlet end of the transfer pump 196 is connected to the methanol tank 2.

[0096] The outer pipe 191, the middle pipe 192 and the inner pipe 193 have a serpentine curved structure.

[0097] When in use, the exhaust gas from the hydrogen range extender 1 enters the outer heating chamber and the inner heating chamber from the exhaust gas discharge pipe 2 10, flows within them, and is finally discharged from the outer heating chamber and the inner heating chamber. Meanwhile, under the action of structures such as the transfer pump 196, the methanol solution in the methanol tank 2 circulates between the methanol tank 2, the transfer pump 196, the second material pipe 195, the material chamber, and the first material pipe 194. When the methanol solution flows in the material chamber, it is heated by the residual heat from the exhaust in the external heating chamber and the internal heating chamber, which prevents the methanol solution from solidifying at low temperature and maintains its fluidity.

[0098] The power source 176 is an electric motor or other device that can output rotational kinetic energy.

[0099] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A range extender mechanism for an internal combustion engine that combines onboard methanol reforming for hydrogen production with methanol vaporization via a low-temperature methanol supply tank, characterized in that: Includes a methanol tank (2) for storing a mixed solution of methanol and deionized water; A methanol-to-hydrogen generator (5) is provided, the input end of which is connected to a methanol tank (2). The methanol-to-hydrogen generator (5) is used to perform a catalytic reforming reaction on a methanol solution to generate hydrogen-rich gas. A methanol atomizer (3) is provided, the input end of which is connected to a methanol tank (2). The methanol atomizer (3) is used to atomize or vaporize a methanol solution into methanol gas. The ejector (4) has two input ends connected to the output end of the methanol hydrogen generator (5) and the output end of the methanol atomizer (3), respectively. The ejector (4) is used to mix hydrogen-rich gas with methanol gas to form a mixed fuel. Hydrogen range extender (1), the input end of which is connected to the output end of ejector (4), the hydrogen range extender (1) is used to burn mixed fuel and drive generator to generate electricity.

2. The vehicle-mounted methanol reforming hydrogen production and methanol gasification mixing internal combustion engine range extender mechanism as described in claim 1, characterized in that: The methanol tank (2) and the methanol hydrogen generator (5), the methanol tank (2) and the methanol atomizer (3), and the methanol atomizer (3) and the ejector (4) are all connected by silicone hoses (6); The methanol-to-hydrogen generator (5) and the ejector (4) are connected by a stainless steel pipe (7); The ejector (4) and the hydrogen range extender (1) are connected by a stainless steel hose (8).

3. The vehicle-mounted methanol reforming hydrogen production and methanol gasification mixing internal combustion engine range extender mechanism as described in claim 1, characterized in that: The methanol solution stored in the methanol tank (2) has a mass ratio of methanol to deionized water of 60%-100% and 40%-0% respectively.

4. The vehicle-mounted methanol reforming hydrogen production and methanol gasification mixing internal combustion engine range extender mechanism as described in claim 1, characterized in that: The catalytic reaction temperature of the methanol-to-hydrogen generator (5) is 300-390℃, and the pressure of the hydrogen-rich gas produced is 1.5-2MPa.

5. The vehicle-mounted methanol reforming hydrogen production and methanol gasification mixing internal combustion engine range extender mechanism as described in claim 1, characterized in that: The exhaust gas of the hydrogen range extender (1) is divided into three stages according to temperature: high temperature stage, medium temperature stage and low temperature stage. The high temperature stage supplies the methanol hydrogen generator (5), the medium temperature stage supplies the methanol atomizer (3), and the low temperature stage supplies the methanol tank (2). The exhaust pipe of the hydrogen range extender (1) is connected to the methanol hydrogen generator (5), the methanol hydrogen generator (5) is connected to the methanol atomizer (3) through exhaust pipe one (9), and the methanol atomizer (3) is connected to the methanol tank (2) through exhaust pipe two (10).

6. The vehicle-mounted methanol reforming hydrogen production and methanol gasification mixing internal combustion engine range extender mechanism as described in claim 5, characterized in that: The methanol-to-hydrogen generator (5) includes an outer heat-insulating shell (11), a large heat-conducting cylinder (12) and a small heat-conducting cylinder (13). The inner wall of the outer heat-insulating shell (11) is connected to the large heat-conducting cylinder (12) and the small heat-conducting cylinder (13). The small heat-conducting cylinder (13) is located inside the large heat-conducting cylinder (12). The space between the outer heat-insulating shell (11) and the large heat-conducting cylinder (12) is the catalytic combustion chamber, the space between the large heat-conducting cylinder (12) and the small heat-conducting cylinder (13) is the reforming reaction chamber, the space inside the small heat-conducting cylinder (13) is the raw material preheating chamber, and the raw material preheating chamber is connected to the reforming reaction chamber through the conveying pipeline (14).

7. The vehicle-mounted methanol reforming hydrogen production and methanol gasification mixing internal combustion engine range extender mechanism as described in claim 6, characterized in that: The exhaust pipe of the hydrogen range extender (1) is connected to the inlet end of the heat exchange assembly (15), the heat exchange assembly (15) is located in the catalytic combustion chamber, and the outlet end of the heat exchange assembly (15) is connected to one end of the exhaust pipe (9). The heat exchange assembly (15) includes multiple corrugated ring shells (151), and multiple diffuser cylinders (152) arranged in a ring array are provided between two adjacent corrugated ring shells (151). The center of the upper and lower sides of the diffuser cylinders (152) are respectively connected to the two corrugated ring shells (151) through connecting pipes (153).

8. The vehicle-mounted methanol reforming hydrogen production and methanol gasification mixing internal combustion engine range extender mechanism as described in claim 6, characterized in that: The reforming reaction chamber is provided with a catalytic component (16) and a mixing component (17). The catalytic component (16) includes multiple mounting posts one (161) and multiple mounting posts two (162). The two ends of the mounting posts one (161) and the mounting posts two (162) are respectively connected to the inner wall of the outer heat insulation shell (11). The surface of the first mounting post (161) is connected to a first spiral catalyst plate (163), and the surface of the second mounting post (162) is connected to a second spiral catalyst plate (164).

9. The vehicle-mounted methanol reforming hydrogen production and methanol gasification mixing internal combustion engine range extender mechanism as described in claim 8, characterized in that: The mixing component (17) includes a plurality of rotating shafts (171), and a plurality of mixing blades (172) arranged in a ring array are connected to the surface of the rotating shafts (171). The top of the rotating shaft (171) is connected to a secondary gear (173), and the sides of the multiple secondary gears (173) are meshed with the sides of the transmission gear ring (174). The transmission gear ring (174) is meshed with the drive gear (175) on its side, and the drive gear (175) is connected to the output end of the power source (176).

10. The vehicle-mounted methanol reforming hydrogen production and methanol gasification mixing internal combustion engine range extender mechanism as described in claim 6, characterized in that: A spiral guide plate (18) is provided inside the raw material preheating chamber, and the side of the spiral guide plate (18) is connected to the inside of the small heat-conducting cylinder (13).

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