Methanol supply system special for mine car

Abstract

The utility model relates to a special methanol supply system for a mine car, which relates to the field of fuel oil supply and comprises a tank and a methanol supply mechanism, the methanol supply mechanism comprises a methanol supply pump, a pipeline assembly, a filter assembly and a temperature adjusting assembly used for adjusting the temperature of supplied liquid, the pipeline assembly comprises a liquid supply pipeline, and one end of the liquid supply pipeline is communicated with the oil tank. The other end of the liquid supply pipeline communicates with an oil inlet of the engine. One end of the liquid return pipeline communicates with the oil tank. The methanol supply pump is arranged on the liquid supply pipeline; the filtering assembly comprises a coarse filter and a fine filter, the inlet end of the coarse filter is communicated with an oil outlet of the oil tank through a liquid supply pipeline, the outlet end of the coarse filter is communicated with the inlet end of the fine filter through a liquid supply pipeline, and the outlet end of the fine filter is communicated with an oil inlet of the engine through a liquid supply pipeline. The methanol supply device can improve the methanol supply stability of the mine car.

Description

Technical Field

[0001] This utility model relates to the field of fuel supply, and in particular to a methanol supply system specifically for mining trucks. Background Technology

[0002] With increasing global emphasis on environmental protection and continuous adjustments to the energy structure, finding clean and efficient alternative energy sources has become a crucial issue in the mining industry. Traditional fuel systems face numerous challenges in powering mining trucks.

[0003] Currently, mining trucks primarily rely on traditional fuels such as diesel as their power source. However, diesel combustion produces a large amount of pollutants, such as particulate matter, nitrogen oxides, and sulfur oxides, posing serious threats to the mining environment and workers' health. Furthermore, with the gradual depletion of oil resources and price fluctuations, the cost of traditional fuels is constantly rising, placing a heavy economic burden on mining companies.

[0004] Methanol, as a clean and renewable fuel, boasts advantages such as high combustion efficiency, low pollutant emissions, and relatively low cost, gradually becoming a potential alternative for mining truck power systems. However, most existing methanol supply systems are designed based on conventional automobiles or other applications and cannot fully meet the specific needs of mining trucks. For example, the flow and pressure control of conventional methanol supply systems may not be suitable for the power demands of mining trucks under heavy loads and when climbing inclines.

[0005] Regarding the aforementioned technologies, the operating characteristics and working modes of mining trucks differ from those of ordinary vehicles. Traditional fuel supply structure designs are prone to unstable fuel pressure and uncontrollable fuel temperature when applied to methanol fuel supply, resulting in poor stability of methanol fuel supply. Consequently, when methanol enters the engine for combustion, the combustion efficiency is low, leading to insufficient engine power and excessive fuel waste. Utility Model Content

[0006] To improve the stability of methanol supply to mining trucks, this utility model provides a methanol supply system specifically for mining trucks.

[0007] This utility model provides a methanol supply system specifically for mining trucks, which adopts the following technical solution:

[0008] A methanol supply system for mining trucks includes a fuel tank and a methanol supply mechanism. The methanol supply mechanism includes a methanol supply pump, a pipeline assembly, a filter assembly, and a temperature control assembly. The pipeline assembly includes a liquid supply pipeline, one end of which is connected to the fuel tank, and the other end of which is connected to the engine's fuel inlet. The temperature control assembly includes a heat exchanger, the inlet of which is connected to the liquid supply pipeline, and the outlet of which is connected to the engine's fuel inlet via the liquid supply pipeline.

[0009] The methanol supply pump is installed on the liquid supply pipeline;

[0010] The filtration assembly includes a coarse filter and a fine filter. The inlet end of the coarse filter is connected to the oil outlet of the oil tank through the liquid supply line. The outlet end of the coarse filter is connected to the inlet end of the fine filter through the liquid supply line. The outlet end of the fine filter is connected to the oil inlet of the engine through the liquid supply line.

[0011] Optionally, the filtration assembly further includes a pressure regulating valve, the inlet of which is connected to the outlet of the coarse filter via the liquid supply line, and the outlet of which is connected to the inlet of the fine filter via the liquid supply line.

[0012] Optionally, the pipeline assembly further includes a return pipeline, and the pressure regulating valve is also provided with a discharge port. The inlet end of the return pipeline is connected to the discharge port of the pressure regulating valve, and the other end of the return pipeline is connected to the inlet end of the oil tank.

[0013] Optionally, the piping assembly further includes a distributor and multiple distribution lines, wherein the inlet end of the distributor is connected to the outlet end of the supply line, the inlet ends of the multiple distribution lines are connected to the outlet end of the distributor, and the outlet end of the distribution lines is connected to the oil inlet of the engine.

[0014] Optionally, the temperature control assembly further includes a heater, an outlet pipe, and a return pipe. The inlet end of the engine cooling circuit is connected to the temperature control outlet of the heat exchanger through the return pipe, and the outlet end of the heater is connected to the temperature control inlet of the heat exchanger through the outlet pipe.

[0015] Optionally, the temperature control assembly further includes a temperature control valve, which is disposed on the water outlet pipe.

[0016] Optionally, both the outlet pipe and the return pipe are equipped with valve bodies.

[0017] Optionally, the inlet end of the heater is connected to the temperature control outlet of the heat exchanger via the return water pipe.

[0018] Optionally, the valve body is a three-way valve, which controls whether the liquid on the outlet pipe or the return pipe is connected to the engine's cooling circuit.

[0019] Optionally, the temperature control assembly further includes an auxiliary oil tank and an auxiliary oil pipe. The auxiliary oil tank is disposed on the oil tank, the inlet end of the auxiliary oil pipe is connected to the oil outlet of the auxiliary oil tank, and the outlet end of the auxiliary oil pipe is connected to the inlet end of the heater.

[0020] In summary, this utility model has at least one of the following beneficial technical effects:

[0021] 1. By incorporating filtration components, the coarse filter can intercept larger particles of impurities, such as rust and sand, preventing them from entering the methanol supply system and thus avoiding wear, blockage, or damage to critical components such as pumps, valves, and nozzles. The fine filter further removes smaller particles and impurities, ensuring a purer methanol supply, reducing damage to precision components, and extending equipment lifespan. The combination of coarse and fine filters effectively removes various impurities from methanol, improving its purity. Pure methanol can more fully utilize its properties during combustion or chemical reactions, improving energy efficiency and the accuracy and efficiency of reactions.

[0022] 2. By installing a pressure regulating valve, the oil pressure between the coarse filter and the fine filter can be kept stable. During fluid transmission, oil pressure can become unstable due to factors such as changes in the operating status of the oil pump, differences in pipeline layout, and fluctuations in flow demand under different operating conditions. The pressure regulating valve can adjust the unstable oil pressure at the inlet to a suitable and stable value according to a set value before delivering it to the inlet of the fine filter. This allows the fine filter to operate under a stable pressure environment, ensuring that its filtration accuracy is not affected by pressure fluctuations. For example, when the methanol supply pump suddenly accelerates its liquid supply, the pressure regulating valve can promptly reduce the excessively high oil pressure, preventing impact damage to the filter media of the fine filter.

[0023] 3. By incorporating a distributor and distribution lines, the distributor can evenly distribute filtered methanol into multiple distribution lines. This ensures a relatively balanced fuel supply to each cylinder or combustion zone of the engine, preventing over- or under-supply in some areas. This results in more uniform and stable combustion, improving combustion efficiency and the smoothness of power output. The distributor also acts as a buffer, reducing fluctuations in fuel pressure between different distribution lines. When the engine's fuel demand changes, the distributor can balance the fuel pressure in each distribution line, making the fuel supply more stable and further improving engine performance and reliability.

[0024] 4. By incorporating a heat exchanger, the temperature of methanol can be regulated as it flows from the fuel tank into the engine. For example, when the engine is first started, the methanol temperature may be low. The heat exchanger can utilize the waste heat generated by the engine or other heat sources to heat the methanol, bringing it to a suitable operating temperature, improving its flowability and atomization, thereby enhancing the engine's cold-start performance and combustion efficiency. Conversely, when the engine has been running for an extended period or the ambient temperature is high, causing the methanol temperature to become excessively high, the heat exchanger can lower the methanol temperature through heat dissipation, preventing adverse phenomena such as vapor lock and ensuring a stable fuel supply.

[0025] 5. By incorporating a heater, the methanol temperature can be further increased in extremely cold environments or when the heat exchanger's heating capacity is insufficient. Lower-temperature methanol is obtained from the heat exchanger via the return water pipe, heated, and then returned to the heat exchanger via the outlet water pipe, forming a circulating heating system to ensure the methanol reaches the temperature required for normal engine operation. The heater can employ various methods such as electric heating or waste heat from the engine coolant, improving the system's adaptability and flexibility.

[0026] 6. By setting up an auxiliary fuel tank, the heater can be supplied with fuel independently. This independent supply allows for independent adjustment of the heater's fuel supply parameters, free from the limitations of the main fuel tank system. For example, the fuel supply quantity and pressure from the auxiliary tank to the heater can be adjusted according to different ambient temperatures, engine loads, and other conditions to achieve optimal heating performance. This flexibility improves the system's adaptability to different operating conditions and optimizes the performance of the entire methanol supply system. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the supply mechanism in this utility model.

[0029] Explanation of reference numerals in the attached drawings: 100, oil tank; 200, methanol supply mechanism; 210, methanol supply pump; 220, pipeline assembly; 221, liquid supply pipeline; 222, liquid return pipeline; 223, distributor; 224, distributor pipeline; 230, filter assembly; 231, coarse filter; 232, fine filter; 233, pressure regulating valve; 240, temperature regulating assembly; 241, heat exchanger; 242, heater; 243, water outlet pipe; 244, water return pipe; 245, auxiliary oil tank; 246, auxiliary oil pipe; 247, valve body; 248, temperature regulating valve. Detailed Implementation

[0030] The following combination Figures 1 to 2 The present invention will be described in further detail below.

[0031] This utility model discloses a methanol supply system specifically for mining trucks. (Refer to...) Figure 1 and Figure 2A methanol supply system for mining trucks mainly includes an oil tank 100 and a methanol supply mechanism 200. The methanol supply mechanism 200 includes a methanol supply pump 210, a pipeline assembly 220, a filter assembly 230, and a temperature control assembly 240. The pipeline assembly 220 includes a liquid supply pipeline 221, one end of which is connected to the oil tank 100, and the other end of which is connected to the engine's oil inlet. The temperature control assembly 240 includes a heat exchanger 241, the inlet of which is connected to the liquid supply pipeline 221, and the outlet of which is connected to the engine's oil inlet through the liquid supply pipeline 221.

[0032] The methanol supply pump 210 is installed on the liquid supply line 221;

[0033] The filter assembly 230 includes a pressure regulating valve 233, a coarse filter 231, a fine filter 232, and a return line 222. The inlet end of the coarse filter 231 is connected to the oil outlet of the oil tank 100 through the supply line 221, and the outlet end of the coarse filter 231 is connected to the inlet end of the fine filter 232 through the supply line 221. The outlet end of the fine filter 232 is connected to the oil inlet of the engine through the supply line 221. The inlet end of the pressure regulating valve 233 is connected to the outlet end of the coarse filter 231 through the supply line 221, and the outlet end of the pressure regulating valve 233 is connected to the inlet end of the fine filter 232 through the supply line 221. The pressure regulating valve 233 is also provided with a discharge port. The inlet end of the return line 222 is connected to the discharge port of the pressure regulating valve 233, and the other end of the return line 222 is connected to the inlet end of the oil tank 100.

[0034] The coarse filter 231 intercepts larger particles of impurities, such as rust and sand, preventing them from entering the methanol supply system and thus avoiding wear, blockage, or damage to critical components such as pumps, valves, and nozzles. The fine filter 232 further removes smaller particles and impurities, ensuring a purer methanol supply, reducing damage to precision components, and extending equipment lifespan. The combination of the coarse filter 231 and the fine filter 232 effectively removes various impurities from methanol, improving its purity. Pure methanol can more fully utilize its properties during combustion or chemical reactions, improving energy efficiency and the accuracy and efficiency of reactions.

[0035] During the process of methanol flowing from fuel tank 100 into the engine, heat exchanger 241 can regulate the methanol temperature. For example, when the engine is first started, the methanol temperature may be low. Heat exchanger 241 can use the waste heat generated by the engine or other heat sources to heat the methanol, bringing it to a suitable operating temperature, improving the methanol's flowability and atomization effect, thereby enhancing the engine's cold start performance and combustion efficiency. Conversely, when the engine has been running for a long time or the ambient temperature is high, causing the methanol temperature to become excessively high, heat exchanger 241 can lower the methanol temperature through heat dissipation, preventing adverse phenomena such as vapor lock and ensuring the stability of fuel supply.

[0036] In some embodiments, the piping assembly 220 further includes a distributor 223 and a plurality of dispensing lines 224, wherein the inlet end of the distributor 223 is connected to the outlet end of the supply line 221, the inlet ends of the plurality of dispensing lines 224 are connected to the outlet end of the distributor 223, and the outlet end of the dispensing lines 224 is connected to the oil inlet of the engine.

[0037] The distributor 223 evenly distributes the filtered methanol into multiple distribution lines 224. This ensures a relatively balanced fuel supply to each cylinder or combustion zone of the engine, preventing over- or under-supply in some areas. This results in more uniform and stable combustion, improving combustion efficiency and power output smoothness. The distributor 223 also acts as a buffer, reducing oil pressure fluctuations between the different distribution lines 224. When the engine's fuel demand changes, the distributor 223 balances the oil pressure in each distribution line 224, making the fuel supply more stable and further improving engine performance and reliability.

[0038] In some embodiments, the temperature control assembly 240 further includes a temperature control valve 248, which is disposed on the water outlet pipe 243.

[0039] By controlling the opening of the temperature control valve 248, the flow rate of the coolant entering the heat exchanger 241 is dynamically adjusted, thereby accurately controlling the temperature of the heat exchanger 241.

[0040] In some embodiments, the temperature control assembly 240 further includes an outlet pipe 243 and a return pipe 244. The inlet end of the engine's cooling circuit is connected to the temperature control outlet of the heat exchanger 241 through the return pipe 244, and the outlet end of the engine's cooling circuit is connected to the temperature control inlet of the heat exchanger 241 through the outlet pipe 243.

[0041] By incorporating heater 242, in extremely cold environments or when the heating capacity of heat exchanger 241 is insufficient, the engine's own heat in the engine's cooling circuit can be used to further increase the methanol temperature. Coolant at a lower temperature is obtained from the cooling circuit via return pipe 244, heated by the engine, and then returned to heat exchanger 241 via outlet pipe 243, forming a circulating heating system to ensure that the methanol reaches the temperature required for normal engine operation.

[0042] In some embodiments, the temperature control assembly 240 further includes a heater 242. The inlet end of the heater 242 is connected to the temperature control outlet of the heat exchanger 241 via the return water pipe 244, and the outlet end of the heater 242 is connected to the temperature control inlet of the heat exchanger 241 via the outlet water pipe 243. A valve body 247 is provided on both the outlet water pipe 243 and the return water pipe 244. The valve body 247 is a three-way valve, which controls whether the liquid on the outlet water pipe 243 and the return water pipe 244 is connected to the engine's cooling circuit.

[0043] When the ambient temperature is low, the coolant can be heated by the heater 242, allowing the coolant to flow into the engine's cooling circuit through the three-way valve to warm up the engine and quickly reach operating temperature. At the same time, the heater 242 also allows the coolant to flow into the heat exchanger 241 through the three-way valve to heat the methanol, improving the stability of methanol temperature during fuel inlet, reducing the engine load, and decreasing the possibility of overheating the methanol when the engine is overheated, thus improving heating reliability. Meanwhile, when the engine is stable, the heater 242 stops operating, and the engine's own heat is used to heat the heat exchanger 241, reducing the fuel consumption of the heater 242 and saving fuel for the entire machine.

[0044] The heater 242 can be heated by electric heating, waste heat from engine coolant, or other methods, which improves the adaptability and flexibility of the system.

[0045] In some embodiments, the temperature control assembly 240 further includes an auxiliary oil tank 245 and an auxiliary oil pipe 246. The auxiliary oil tank 245 is disposed on the oil tank 100, the inlet end of the auxiliary oil pipe 246 is connected to the oil outlet of the auxiliary oil tank 245, and the outlet end of the auxiliary oil pipe 246 is connected to the inlet end of the heater 242.

[0046] By setting up an auxiliary fuel tank 245, the heater 242 can be supplied with fuel independently through the auxiliary fuel tank 245. This independent fuel supply from the auxiliary fuel tank 245 allows the fuel supply parameters of the heater 242 to be adjusted independently, without being limited by the main fuel tank 100 system. For example, the fuel supply quantity and pressure from the auxiliary fuel tank 245 to the heater 242 can be adjusted according to different ambient temperatures, engine loads, and other conditions to achieve optimal heating results. This flexibility improves the system's adaptability to different operating conditions and optimizes the performance of the entire methanol supply system.

[0047] The implementation principle of a methanol supply system for mining trucks according to this utility model embodiment is as follows:

[0048] The methanol supply system enhances performance and reliability through multiple components. The coarse filter 231 in the filter assembly 230 intercepts large particulate impurities, while the fine filter 232 further removes small particulate impurities, improving methanol purity, reducing equipment damage, extending service life, and allowing methanol to fully utilize its performance during combustion, improving energy efficiency and reaction accuracy. The pressure regulating valve 233 stabilizes the oil pressure between the coarse filter 231 and the fine filter 232, addressing instability caused by changes in oil pump operation, differences in pipeline layout, and fluctuations in flow demand, preventing damage to the fine filter 232 due to pressure issues. The distributor 223 and distributor line 224 evenly distribute methanol to all areas of the engine, resulting in more uniform and stable combustion, improving combustion efficiency and stability. They also buffer oil pressure fluctuations, balancing oil pressure in each pipeline according to changes in engine fuel demand, thus improving engine performance and reliability. The heat exchanger 241 regulates methanol temperature. During cold starts, it utilizes waste heat or other heat sources to heat methanol to improve flowability and atomization. At high temperatures, it dissipates heat to prevent vapor lock, ensuring a stable fuel supply. Heater 242 further heats the system in extremely cold conditions or when heat exchanger 241 fails to reach the required operating temperature. Circulating heating ensures the methanol reaches the required operating temperature, and the diverse heating methods enhance adaptability. Auxiliary fuel tank 245 supplies fuel to heater 242 independently, allowing for independent adjustment of fuel supply parameters, unrestricted by the main fuel tank 100 system. It adjusts the fuel supply quantity and pressure based on ambient temperature, engine load, and other conditions, enhancing the system's adaptability to different operating conditions and optimizing overall performance.

[0049] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A methanol supply system specifically for mining trucks, characterized in that: The system includes a fuel tank (100) and a methanol supply mechanism (200). The methanol supply mechanism (200) includes a methanol supply pump (210), a pipeline assembly (220), a filter assembly (230), and a temperature control assembly (240). The pipeline assembly (220) includes a liquid supply pipeline (221), one end of which is connected to the fuel tank (100), and the other end of which is connected to the engine's fuel inlet. The temperature control assembly (240) includes a heat exchanger (241), the inlet of which is connected to the liquid supply pipeline (221), and the outlet of which is connected to the engine's fuel inlet via the liquid supply pipeline (221). The methanol supply pump (210) is installed on the liquid supply pipeline (221); The filter assembly (230) includes a coarse filter (231) and a fine filter (232). The inlet end of the coarse filter (231) is connected to the oil outlet of the oil tank (100) through the liquid supply line (221). The outlet end of the coarse filter (231) is connected to the inlet end of the fine filter (232) through the liquid supply line (221). The outlet end of the fine filter (232) is connected to the oil inlet of the engine through the liquid supply line (221).

2. The methanol supply system for mining trucks according to claim 1, characterized in that: The filter assembly (230) also includes a pressure regulating valve (233), the inlet end of which is connected to the outlet end of the coarse filter (231) through the liquid supply line (221), and the outlet end of which is connected to the inlet end of the fine filter (232) through the liquid supply line (221).

3. The methanol supply system for mining trucks according to claim 2, characterized in that: The pipeline assembly (220) also includes a return pipeline (222), and the pressure regulating valve (233) is also provided with a discharge port. The inlet end of the return pipeline (222) is connected to the discharge port of the pressure regulating valve (233), and the other end of the return pipeline (222) is connected to the inlet end of the oil tank (100).

4. A methanol supply system for mining trucks according to claim 3, characterized in that: The piping assembly (220) further includes a distributor (223) and a plurality of distribution pipes (224). The inlet end of the distributor (223) is connected to the outlet end of the supply pipe (221), the inlet end of the plurality of distribution pipes (224) is connected to the outlet end of the distributor (223), and the outlet end of the distribution pipes (224) is connected to the oil inlet of the engine.

5. A methanol supply system for mining trucks according to any one of claims 1-4, characterized in that: The temperature control assembly (240) also includes a heater (242), an outlet pipe (243), and a return pipe (244). The inlet end of the engine cooling circuit is connected to the temperature control outlet of the heat exchanger (241) through the return pipe (244), and the outlet end of the heater (242) is connected to the temperature control inlet of the heat exchanger (241) through the outlet pipe (243).

6. A methanol supply system for mining trucks according to claim 5, characterized in that: The temperature control assembly (240) also includes a temperature control valve (248), which is disposed on the water outlet pipe (243).

7. A methanol supply system for mining trucks according to claim 6, characterized in that: Both the outlet pipe (243) and the return pipe (244) are equipped with valve bodies (247).

8. A methanol supply system for mining trucks according to claim 7, characterized in that: The inlet end of the heater (242) is connected to the temperature control outlet of the heat exchanger (241) through the return water pipe (244).

9. A methanol supply system for mining trucks according to claim 8, characterized in that: The valve body (247) is a three-way valve, which controls whether the liquid on the outlet pipe (243) or the return pipe (244) is connected to the engine's cooling circuit.

10. A methanol supply system for mining trucks according to claim 6, characterized in that: The temperature control assembly (240) also includes an auxiliary oil tank (245) and an auxiliary oil pipe (246). The auxiliary oil tank (245) is disposed on the oil tank (100). The inlet end of the auxiliary oil pipe (246) is connected to the oil outlet of the auxiliary oil tank (245), and the outlet end of the auxiliary oil pipe (246) is connected to the inlet end of the heater (242).

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