A mine dump truck fuel tank heating system

Abstract

The utility model relates to a kind of mine dump truck oil tank heating system, including double-cavity diesel tank, engine and cooling water tank, the double-cavity diesel tank includes independent main oil cavity and auxiliary oil cavity, the main oil cavity is equipped with water circulation heating oil float and temperature sensor, the water circulation heating oil float is integrated with water circulation heating pipe, the auxiliary oil cavity is equipped with auxiliary oil float, hot circulating water enters water circulation heating pipe, engine oil outlet pipe is connected main oil inlet and auxiliary oil inlet respectively, engine oil inlet pipe is connected main oil outlet and auxiliary oil outlet respectively, oil outlet switch valve is equipped on engine oil outlet pipe, oil inlet switch valve is equipped on engine oil inlet pipe.The utility model can make full use of engine preheating, start engine with low freezing point diesel oil in auxiliary oil cavity, utilize engine hot water to heat 0# diesel oil in main oil cavity simultaneously, when temperature sensor detects that main oil cavity oil temperature is higher than 0 DEG C, controller automatically switches oil circuit to main cavity oil supply, and closes heating water circuit.

Description

Technical Field

[0001] This utility model relates to the field of mining vehicle technology, specifically to a fuel tank heating system for a mining dump truck. Background Technology

[0002] Mining dump trucks typically operate in open-pit mines where ambient temperatures fluctuate drastically. To balance economy and low-temperature starting performance, it is generally recommended to use lower-cost No. 0 diesel in summer and switch to diesel with lower pour points such as -10 or -35 in winter. However, frequent oil changes are cumbersome during periods of large diurnal temperature variations or seasonal transitions. Furthermore, in the event of a sudden cold snap, the No. 0 diesel in the tank may solidify, preventing the vehicle from starting and impacting production.

[0003] In the existing technology, electric heating is used to heat a single fuel tank. Electric heating relies on the battery, which has insufficient range and low heating efficiency. Although some vehicles are equipped with a dual fuel tank split structure, the fuel supply line needs to be switched manually, which is inconvenient to operate. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a heating system for the fuel tank of a mining dump truck. It can automatically switch the fuel supply circuit, make full use of engine preheating, consume no extra energy, start the engine with low-pour-point diesel fuel in the auxiliary oil chamber, and at the same time use engine hot water to heat the 0# diesel fuel in the main oil chamber. When the temperature sensor detects that the oil temperature in the main oil chamber is higher than 0°C, the controller automatically switches the fuel circuit to the main chamber and shuts off the heating water circuit.

[0005] The purpose of this utility model is achieved as follows: A fuel tank heating system for a mining dump truck includes a dual-chamber diesel tank, an engine, and a cooling water tank. The dual-chamber diesel tank includes a main fuel chamber and a secondary fuel chamber, which are independent of each other. The main fuel chamber is equipped with a water-circulating heated fuel float and a temperature sensor. The water-circulating heated fuel float integrates a water-circulating heating pipe. The secondary fuel chamber is equipped with a secondary fuel float. The cooling water tank, the engine, and the water-circulating heated fuel float are connected by circulating water pipes. The engine oil outlet pipe is connected to the main oil inlet of the water-circulating heated fuel float and the secondary oil inlet of the secondary fuel float via pipes. The engine oil inlet pipe is connected to the main oil outlet of the water-circulating heated fuel float and the secondary oil outlet of the secondary fuel float via pipes. An oil outlet switching valve is provided on the engine oil outlet pipe, and an oil inlet switching valve is provided on the engine oil inlet pipe.

[0006] Preferably, the water-circulating heating oil float further includes an oil suction pipe and an oil return pipe, and the water-circulating heating pipe, the oil suction pipe and the oil return pipe are placed inside the main oil chamber.

[0007] Preferably, the top pipe seat of the water circulation heating oil float is equipped with a hot circulation water inlet, a hot circulation water return inlet, a main oil inlet, and a main oil outlet. The top pipe seat is located outside the main oil chamber. Circulating water enters and exits the water circulation heating pipe through the hot circulation water inlet and the hot circulation water return inlet. Diesel fuel flows out of the main oil chamber through the oil suction pipe and the main oil outlet, and flows into the main oil chamber through the main oil inlet and the oil return pipe.

[0008] Preferably, the top tube seat of the auxiliary oil float is provided with an auxiliary oil inlet and an auxiliary oil outlet, through which diesel fuel enters and exits the auxiliary oil chamber.

[0009] Preferably, a temperature control valve is provided on the circulating water pipeline, and the temperature control valve is installed on the pipeline connected to the hot circulating water inlet.

[0010] Preferably, a circulating oil pipeline is formed between the engine, the water circulation heating oil float, and the auxiliary oil float.

[0011] Preferably, the oil suction ports of both the water circulation heating oil float and the auxiliary oil float are equipped with filter screens.

[0012] Preferably, the engine oil inlet pipe is equipped with a high-pressure fuel filter.

[0013] Preferably, the main oil chamber stores #0 diesel oil, and the auxiliary oil chamber stores low-temperature resistant diesel oil.

[0014] The beneficial effects of this utility model are: Make full use of engine preheating, with no additional energy consumption. Start the engine with low-pour-point diesel fuel in the auxiliary oil chamber, and at the same time use engine hot water to heat the 0# diesel fuel in the main oil chamber. When the temperature sensor detects that the oil temperature in the main oil chamber is higher than 0℃, the controller automatically switches the oil circuit to supply oil to the main chamber and shuts off the heating water circuit. The integrated dual-chamber diesel tank replaces the split design, increasing space utilization by 40%. The temperature sensor monitors the oil temperature in the main oil chamber in real time, and the controller automatically switches the oil circuit based on the feedback oil temperature signal, eliminating the need for manual switching and reducing the risk of frostbite to workers in low-temperature environments. During the low-temperature season, 0# diesel is used in more than 90% of the operating conditions, and only a small amount of -35# diesel is used during the start-up phase. Based on an annual diesel consumption of 10 tons, the annual cost savings exceed 20,000 yuan. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a mining dump truck fuel tank heating system according to the present invention.

[0016] Figure 2 This is a schematic diagram of the assembly structure of a dual-chamber diesel tank.

[0017] The components include: a dual-chamber diesel tank (1); an engine (2); a cooling water tank (3); a main oil chamber (1.1); a secondary oil chamber (1.2); a baffle plate (1.3); a water circulation heating float (4); a water circulation heating pipe (4.1); an oil suction pipe (4.2); an oil return pipe (4.3); a hot circulation water inlet (4.4); a hot circulation water return outlet (4.5); a main oil inlet (4.6); a main oil outlet (4.7); a secondary oil float (5); a temperature sensor (6); a temperature control valve (7); an engine oil outlet pipe (8); an engine oil inlet pipe (9); a main oil chamber oil inlet pipe (10); a secondary oil chamber oil inlet pipe (11); a main oil chamber oil outlet pipe (12); a secondary oil chamber oil outlet pipe (13); an oil outlet switching valve (14); an oil inlet switching valve (15); a filter screen (16); and a high-pressure fuel filter (17). Detailed Implementation

[0018] See Figure 1 and Figure 2 This utility model relates to a fuel tank heating system for a mining dump truck, comprising a dual-chamber diesel tank 1, an engine 2, and a cooling water tank 3. The dual-chamber diesel tank 1 includes an independent main oil chamber 1.1 and a secondary oil chamber 1.2, separated by a partition 1.3. The main oil chamber 1.1 stores 0# diesel fuel, and the secondary oil chamber 1.2 stores low-temperature resistant diesel fuel. The low-temperature resistant diesel fuel can be of grades -20# or -35#, ensuring reliable vehicle starting at any low temperature. The main oil chamber 1.1 is equipped with a water-circulating heated oil float 4, and the secondary oil chamber 1.2 is equipped with a secondary oil float 5. Both the water-circulating heated oil float 4 and the secondary oil float 5 are purchased components. The water-circulating heated oil float 4 includes a water-circulating heating pipe 4.1, a suction pipe 4.2, and a return pipe 4.3. Heating pipe 4.1, oil suction pipe 4.2, and oil return pipe 4.3 are placed inside the main oil chamber 1.1. A temperature sensor 6 is also installed inside the main oil chamber 1.1 to monitor the temperature of diesel fuel in the main oil chamber in real time. The top tube seat of the water circulation heating oil float 4 is equipped with a hot circulation water inlet 4.4, a hot circulation water return inlet 4.5, a main oil inlet 4.6, and a main oil outlet 4.7. The top tube seat is located outside the main oil chamber 1.1. Circulating water enters and exits the water circulation heating pipe 4.1 through the hot circulation water inlet 4.4 and the hot circulation water return inlet 4.5. Diesel fuel flows out of the main oil chamber 1.1 through the oil suction pipe 4.2 and the main oil outlet 4.7, and flows back into the main oil chamber 1.1 through the main oil inlet 4.6 and the oil return pipe 4.3. The top tube seat of the auxiliary oil float 5 is equipped with an auxiliary oil inlet and an auxiliary oil outlet. Diesel fuel enters and exits the auxiliary oil chamber 1.2 through the auxiliary oil inlet and the auxiliary oil outlet.

[0019] The cooling water tank 3, engine 2, and water circulation heating float 4 are connected by a circulating water pipe. A temperature control valve 7 is installed on the circulating water pipe, which is connected to the hot water inlet 4.4. The valve controls whether circulating hot water flows into the heating pipe. It automatically opens when the engine water temperature is ≥50℃ and closes when the water temperature is <45℃, preventing heat waste during cold starts. The surface of the water circulation heating pipe is equipped with heat dissipation fins to increase the heat exchange area with diesel fuel and improve heating efficiency.

[0020] A circulating oil pipeline is formed between engine 2, water circulation heating oil float 4, and auxiliary oil float 5. The circulating oil pipeline includes engine oil outlet pipe 8 and engine oil inlet pipe 9. One end of engine oil outlet pipe 8 is connected to engine oil outlet, and the other end is divided into two paths. One path is connected to main oil inlet 4.6 through main oil chamber inlet pipe 10, and the other path is connected to auxiliary oil inlet through auxiliary oil chamber inlet pipe 11. One end of engine oil inlet pipe 9 is connected to engine oil inlet, and the other end is divided into two paths. One path is connected to main oil outlet 4.7 through main oil chamber outlet pipe 12, and the other path is connected to auxiliary oil outlet through auxiliary oil chamber outlet pipe 13. Engine oil outlet pipe 8 is equipped with an oil outlet switching valve 14, and engine oil inlet pipe 9 is equipped with an oil inlet switching valve 15.

[0021] The temperature sensor, temperature control valve 7, oil outlet switching valve 14, and oil inlet switching valve 15 are all electrically connected to the ECU.

[0022] Both the oil inlet of the water circulation heating oil float 4 and the auxiliary oil float 5 are equipped with filter screens 16 to prevent impurities at the bottom of the oil tank from entering the circulating oil pipeline. The engine oil inlet pipe 9 is equipped with a high-pressure fuel filter 17 with a filtration accuracy of 10μm to further filter out small particles.

[0023] The main oil chamber 1.1 and the auxiliary oil chamber 1.2 are each provided with an oil filling hole for easy addition of diesel fuel.

[0024] Working principle: When the ambient temperature is below 0℃, the ECU controls the inlet and outlet switching valves to connect to the auxiliary oil chamber pipeline. Low-temperature diesel fuel enters the engine through the auxiliary oil float to start the vehicle. The engine heats the circulating water. When the circulating water reaches the set temperature (50℃), the temperature control valve opens. The hot circulating water enters the main oil chamber through the water circulation to heat the oil float and heat the 0# diesel fuel inside. The temperature sensor monitors the diesel fuel temperature in the main oil chamber in real time. When it is above 0 degrees Celsius, the inlet and outlet switching valves switch to supply fuel to the main oil chamber, and the temperature control valve closes at the same time.

[0025] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A heating system for the fuel tank of a mining dump truck, characterized in that: The system includes a dual-chamber diesel tank, an engine, and a cooling water tank. The dual-chamber diesel tank includes an independent main oil chamber and a secondary oil chamber. The main oil chamber is equipped with a water-circulating heated oil float and a temperature sensor. The water-circulating heated oil float integrates a water-circulating heating pipe. The secondary oil chamber is equipped with a secondary oil float. The cooling water tank, the engine, and the water-circulating heated oil float are connected by circulating water pipes. The engine oil outlet pipe is connected to the main oil inlet of the water-circulating heated oil float and the secondary oil inlet of the secondary oil float via pipes. The engine oil inlet pipe is connected to the main oil outlet of the water-circulating heated oil float and the secondary oil outlet of the secondary oil float via pipes. The engine oil outlet pipe is equipped with an oil outlet switching valve, and the engine oil inlet pipe is equipped with an oil inlet switching valve.

2. The heating system for the fuel tank of a mining dump truck according to claim 1, characterized in that: The water-circulating heating oil float also includes an oil suction pipe and an oil return pipe, which are located inside the main oil chamber.

3. The heating system for the fuel tank of a mining dump truck according to claim 2, characterized in that: The top pipe seat of the water circulation heating oil float is equipped with a hot circulation water inlet, a hot circulation water return inlet, a main oil inlet, and a main oil outlet. The top pipe seat is located outside the main oil chamber. Circulating water enters and exits the water circulation heating pipe through the hot circulation water inlet and the hot circulation water return inlet. Diesel fuel flows out of the main oil chamber through the oil suction pipe and the main oil outlet, and flows into the main oil chamber through the main oil inlet and the oil return pipe.

4. The oil tank heating system for a mining dump truck according to claim 1, characterized in that: The top pipe seat of the auxiliary oil float is provided with an auxiliary oil inlet and an auxiliary oil outlet, through which diesel fuel enters and exits the auxiliary oil chamber.

5. A heating system for the fuel tank of a mining dump truck according to claim 1 or 4, characterized in that: A temperature control valve is installed on the circulating water pipeline, and the temperature control valve is installed on the pipeline connected to the hot circulating water inlet.

6. The heating system for the fuel tank of a mining dump truck according to claim 1, characterized in that: A circulating oil pipeline is formed between the engine, the water circulation heating oil float, and the auxiliary oil float.

7. The heating system for the fuel tank of a mining dump truck according to claim 1, characterized in that: Both the oil suction port of the water circulation heating oil float and the auxiliary oil float are equipped with a filter screen.

8. The heating system for the fuel tank of a mining dump truck according to claim 1, characterized in that: A high-pressure fuel filter is installed on the engine's fuel inlet pipe.

9. A heating system for the fuel tank of a mining dump truck according to claim 1, characterized in that: The main oil chamber stores #0 diesel oil, and the auxiliary oil chamber stores low-temperature resistant diesel oil.

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