Oil consumption metering system capable of automatically adjusting oil temperature and mining dump truck

Abstract

The utility model discloses an oil consumption metering system capable of automatically adjusting oil temperature and a mining dump truck. The oil consumption metering system comprises an oil consumption metering system body and an oil return cooling system. The oil consumption metering system comprises an oil tank, an oil consumption meter and an engine, the oil tank is communicated with the oil consumption meter through an oil inlet pipe, and the oil consumption meter is communicated with the engine through an oil outlet pipe. The oil return cooling system comprises a cooler and a heat dissipation system, the cooler is connected to an oil return pipe between the engine and the oil consumption meter in series, and fuel oil heated by the engine enters the cooler through the oil return pipe to be cooled and then flows into the oil consumption meter. The cooling system acts on the cooler and is used for increasing or reducing the cooling capacity of the cooler, so that the oil return temperature of the engine is kept close to the temperature of fuel oil in the oil tank. According to the utility model, measurement errors caused by volume thermal expansion of fuel oil in the oil return pipe can be eliminated, and accurate measurement of oil consumption is realized.

Description

Technical Field

[0001] The utility model relates to an oil consumption measurement system with automatic oil temperature regulation, belonging to the technical field of mining dump trucks. Background Art

[0002] Mining dump trucks are widely used in the material transportation of large open-pit mining areas due to their high operation efficiency and good power performance. In order to meet the requirements of energy conservation and emission reduction for mining dump trucks, it is necessary to accurately regulate the oil consumption of mining dump trucks during the production and commissioning process.

[0003] At present, the common oil consumption measurement methods for mining dump trucks are to read the oil consumption data through the engine CAN bus and use an external flow meter. The oil consumption data in the CAN bus is calculated based on the fuel injection volume of the engine nozzle, so there are certain errors. For the external flow meter, the fuel in the return oil pipeline is heated by the engine and the temperature rises, resulting in inaccurate oil consumption measurement due to the expansion of the fuel volume. Therefore, both oil consumption measurement methods cannot accurately measure the true oil consumption data of heavy mining trucks. Summary of the Invention

[0004] In view of the deficiencies of the existing technology, the utility model provides an oil consumption measurement system with automatic oil temperature regulation, which can eliminate the measurement error caused by the thermal expansion of the fuel volume in the return oil pipe and realize the accurate measurement of oil consumption.

[0005] The utility model is realized according to the following technical solutions:

[0006] In a first aspect, the utility model provides an oil consumption measurement system with automatic oil temperature regulation, including:

[0007] An oil consumption measurement system including a fuel tank, an oil consumption meter, and an engine. The fuel tank is connected to the oil consumption meter through an inlet pipe, and the oil consumption meter is connected to the engine through an outlet pipe.

[0008] A return oil cooling system including a cooler and a heat dissipation system. The cooler is connected in series on the return oil pipe between the engine and the oil consumption meter. The fuel heated by the engine enters the cooler through the return oil pipe, is cooled, and then flows into the oil consumption meter. The heat dissipation system acts on the cooler to increase or decrease the cooling capacity of the cooler, so that the return oil temperature of the engine is maintained near the fuel temperature in the fuel tank.

[0009] In some embodiments, the heat dissipation system includes:

[0010] A first temperature sensor installed in the fuel tank for real-time monitoring of the fuel temperature in the fuel tank.

[0011] A second temperature sensor installed at the return oil port of the oil consumption meter for real-time monitoring of the return oil temperature of the engine.

[0012] a heat dissipation component, arranged at the cooler and used for dissipating heat from the cooler;

[0013] The controller is electrically connected to the first and second temperature sensors and the heat dissipation component. The controller detects the fuel temperature in the fuel tank as the target temperature and changes the heat dissipation capacity of the heat dissipation component in real time according to the comparison with the engine oil return temperature.

[0014] In some embodiments, the heat dissipation component is a fan, which includes a motor and blades fixedly connected thereto, and the motor drives the blades to rotate for air convection; the controller is electrically connected to the inverter, and the inverter is electrically connected to the motor, and the controller controls the working power frequency of the inverter through signal instructions to adjust the speed of the motor.

[0015] In some embodiments, an encoder is installed on the motor, and the encoder is electrically connected to the frequency converter for feeding back the real-time monitored motor speed to the frequency converter.

[0016] In some embodiments, the outer shell of the oil tank is made of rigid plates, and a plurality of wave-breaking plates are installed inside the oil tank to prevent oil surges. The oil tank is provided with an exhaust device for discharging the gas in the oil tank in a timely manner.

[0017] In some embodiments, the fuel consumption meter has a built-in flow meter, and the fuel inlet and the fuel outlet of the fuel consumption meter are connected through the flow meter for measuring fuel consumption.

[0018] In some embodiments, the fuel consumption meter is provided with an oil cup, and the unburned fuel of the engine flows back to the oil cup through the return oil pipe, and the return oil in the oil cup enters the engine through the oil outlet pipe to continue to burn and produce work.

[0019] In some embodiments, the fuel consumption meter is provided with an automatic exhaust device for promptly removing the gas contained in the fuel in the oil return pipe.

[0020] In some embodiments, the cooler is composed of a frame and a heat dissipation pipe, the heat dissipation pipe is fixed by the frame, and the hot fuel dissipates heat through the heat dissipation pipe.

[0021] In a second aspect, the utility model provides a mining dump truck, comprising the above-mentioned fuel consumption metering system for automatically adjusting oil temperature.

[0022] Beneficial effects of the utility model:

[0023] The automatically adjusted oil return cooling system eliminates measurement errors caused by thermal expansion of the fuel in the return pipe, enabling accurate measurement of fuel consumption.

[0024] The controller of this system can calculate the rotational speed of the cooling fan motor corresponding to the target temperature after cooling based on parameters such as the ambient temperature, the size and quantity of the cooling fans, the performance of the cooler, and the fuel temperature in the return oil pipe.

[0025] To facilitate the quick installation of the fuel consumption meter, this system does not damage the original fuel pipeline system. It only needs to connect a three-way valve to the original pipeline to measure the fuel consumption, which is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings, as part of this utility model, are used to provide a further understanding of this utility model. The schematic embodiments and descriptions thereof of this utility model are used to explain this utility model, but do not constitute an improper limitation to this utility model. Obviously, the drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] In the drawings:

[0028] Figure 1 is the schematic diagram of the fuel consumption measurement system for automatically adjusting the oil temperature of this utility model.

[0029] Reference signs in the drawings: 1 - fuel tank, 2 - fuel consumption meter, 3 - engine, 4 - cooler, 5 - controller, 6 - frequency converter, 7 - motor.

[0030] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of this utility model in any way, but to illustrate the concept of this utility model to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of this utility model in conjunction with the drawings in the embodiments of this utility model. The following embodiments are used to illustrate this utility model, but are not used to limit the scope of this utility model.

[0032] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this utility model.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] As Figure 1 shown, an oil consumption measurement system with automatic oil temperature adjustment includes an oil consumption measurement system and an oil return cooling system; the oil consumption measurement system includes a fuel tank 1, an oil consumption meter 2, and an engine 3. The fuel tank 1 is connected to the oil consumption meter 2 through an inlet pipe, and the oil consumption meter 2 is connected to the engine 3 through an outlet pipe; the oil return cooling system includes a cooler 4 and a heat dissipation system. The cooler 4 is connected in series on the oil return pipe between the engine 3 and the oil consumption meter 2. The fuel heated by the engine 3 enters the cooler 4 through the oil return pipe, is cooled, and then flows into the oil consumption meter 2; the heat dissipation system acts on the cooler 4 to increase or decrease the cooling capacity of the cooler 4, so that the oil return temperature of the engine 3 is maintained near the fuel temperature in the fuel tank 1, eliminating the measurement error caused by the volume expansion of the liquid due to heat.

[0035] The following further describes the specific composition of the above heat dissipation system.

[0036] Continuing to refer to Figure 1 shown, the heat dissipation system includes a first temperature sensor, a second temperature sensor, a heat dissipation component, and a controller 5; the first temperature sensor is installed in the fuel tank 1 to monitor the fuel temperature in the fuel tank 1 in real time; the second temperature sensor is installed at the oil return port of the oil consumption meter 2 to monitor the engine oil return temperature in real time; the heat dissipation component is arranged at the cooler 4 to dissipate heat from the cooler 4; the controller 5 is electrically connected to the first and second temperature sensors and the heat dissipation component. The controller 5 takes the fuel temperature detected in the fuel tank 1 as the target temperature, and adjusts the heat dissipation capacity of the heat dissipation component in real time according to the comparison of the engine oil return temperature, so that the engine oil return temperature is finally maintained near the fuel temperature in the fuel tank.

[0037] In a further embodiment, continuing to refer to Figure 1 shown, the heat dissipation component is a fan, which includes a motor 7 and blades fixedly connected thereto. The motor 7 drives the blades to rotate for air convection; the controller 5 is electrically connected to an inverter 6, and the inverter 6 is also electrically connected to the motor 7. The controller 5 controls the working power frequency of the inverter 6 through a signal command to adjust the rotation speed of the motor 7.

[0038] In a further embodiment, continuing to refer to Figure 1As shown, an encoder is installed on the motor 7. The encoder is electrically connected to the frequency converter 6 and is used to feedback the real-time monitored motor speed to the frequency converter 6, thereby achieving precise control of the motor speed.

[0039] The following further explains the specific structures of the various components in the above fuel consumption measurement system.

[0040] The outer shell of the fuel tank 1 is composed of rigid plates spliced together. A plurality of anti-surge plates are installed inside the fuel tank 1 to prevent the oil from surging and increase the strength of the fuel tank; the fuel tank 1 is provided with an oil delivery pipeline, an exhaust device, and a first temperature sensor. The oil delivery pipeline transports the normal-temperature fuel to the engine 3 through the fuel consumption meter 2 for combustion work, and the exhaust device discharges the gas in the fuel tank 1 in a timely manner; the first temperature sensor provided in the fuel tank 1 is connected to the controller 5 and is used to monitor the temperature of the fuel in the fuel tank in real time.

[0041] The fuel consumption meter 2 is internally provided with a flow meter. The inlet and outlet of the fuel consumption meter 2 are connected through the flow meter and are used to measure fuel consumption; the fuel consumption meter 2 is provided with an oil cup. The unburned fuel of the engine 3 flows back to the oil cup through the return oil pipeline, and the return oil in the oil cup enters the engine 3 through the outlet pipeline to continue combustion work; an automatic exhaust device formed by connecting an automatic exhaust valve to an exhaust pipe is provided on the upper part of the fuel consumption meter 2, which can automatically discharge the gas in the return oil; a second temperature sensor is provided at the return oil port of the fuel consumption meter 2 and is used to monitor the temperature of the engine return oil in real time.

[0042] The engine 3 is used for the combustion work of fuel consumption. The fuel enters the engine 3 through the outlet pipe of the fuel tank 1 and the fuel consumption meter 2 for combustion work. The unburned fuel expands in volume due to the high temperature caused by the heating of the engine 3. The high-temperature fuel first flows back into the cooler 4 through the return pipe for cooling and then flows back into the fuel consumption meter 2.

[0043] The following further explains the specific structures of the various components in the above return oil cooling system.

[0044] The cooler 4 is composed of a frame and heat dissipation pipes. The heat dissipation pipes are fixed by the frame; the hot fuel can eliminate the fuel consumption measurement error caused by the high fuel temperature and volume expansion after sufficient heat dissipation through the heat dissipation pipes.

[0045] The frequency converter 6 is electrically connected to the controller 5 and the motor 7. Its main function is to control the speed of the motor 7 in real time according to the instructions of the controller 5. Specifically, the frequency converter 6 controls the speed of the motor by changing the frequency of the motor working power supply, thereby realizing the speed regulation of the motor 7. The controller 5 has programmable logic control functions and can receive and send signals. The controller 5 receives the fuel oil temperature in the fuel tank and the engine return oil temperature, and controls the motor to work in accordance with the set direction, speed, and response time through logical programming based on system parameters. Of course, the heat dissipation device is not limited to the above-mentioned air cooling. In actual design, the heat dissipation device can also be designed as a water cooling or other heat dissipation methods.

[0046] The working principle of the above fuel consumption measurement system for automatically adjusting the oil temperature is given below.

[0047] Continue to refer to Figure 1 As shown, the fuel in the fuel tank 1 flows into the fuel consumption meter 2 through the fuel inlet pipe, and then enters the engine 3 through the outlet pipe for combustion work. The unburned fuel flows back to the oil cup of the fuel consumption meter 2 through the return pipe. The return oil in the oil cup enters the engine 3 through the outlet pipe again for combustion work, completing the entire oil circuit cycle. During this period, the fuel consumed by the engine 3 flows into the oil cup of the fuel consumption meter 2 through the fuel tank 1 and the inlet pipe.

[0048] In order to eliminate the problem that the fuel consumption measurement is inaccurate due to the increase in temperature and volume expansion of the fuel in the return pipe after being heated by the engine, a return oil cooling system is introduced to reduce the return oil temperature of the engine 3 to the inlet oil temperature to complete the accurate measurement of fuel consumption.

[0049] The principle of the return oil cooling system is that the controller 5 detects the fuel temperature in the fuel tank 1 through a temperature sensor as the target temperature, and then adjusts the speed of the motor 7 of the fan in real time according to the feedback of the return oil temperature signal, thereby increasing or decreasing the cooling capacity of the cooler 4, and finally keeping the return oil temperature always near the fuel temperature in the fuel tank.

[0050] The main implementation method of the controller is as follows: The controller calculates the motor speed corresponding to the cooled fuel temperature according to parameters such as the ambient temperature, the size and quantity of the cooling fans, the performance of the cooler, and the fuel temperature in the return pipe, and then controls the working power supply frequency of the frequency converter through a signal instruction to adjust the speed of the motor of the fan. The motor is equipped with an encoder, and the system can feedback the real-time speed of the motor to the frequency converter through the encoder to achieve precise control of the motor speed.

[0051] In order to facilitate the quick installation of the fuel consumption meter, this system does not damage the original fuel pipeline. Only by connecting a three-way valve to the original pipeline interface can the fuel consumption measurement pipeline be switched, which is convenient and fast.

[0052] In summary, the present utility model provides a fuel consumption measurement system for automatically adjusting the oil temperature, which realizes the following functions:

[0053] 1. The fuel heated by the engine enters the cooler through the return pipe, is cooled and then flows into the fuel consumption meter, eliminating the measurement error caused by the thermal expansion and contraction of the fuel volume. The cooling capacity of the cooler is adjustable.

[0054] 2. This system collects the temperature of the fuel in the fuel tank as the target value, and the controller adjusts the motor speed of the fan in real time to control the cooling capacity of the cooler, ultimately making the fuel temperature in the return pipe consistent with the fuel temperature in the fuel tank and eliminating the measurement error caused by the volume expansion of the liquid due to heat.

[0055] 3. The controller can calculate the motor speed of the fan corresponding to the target fuel temperature after cooling according to parameters such as the ambient temperature, the size and quantity of the cooling fans, the performance of the cooler, and the fuel temperature in the return pipe; the encoder can monitor the motor speed in real time to achieve precise control of the motor speed.

[0056] 4. The motor speed adopts a real-time control mode; the controller controls the target speed of the fan motor through the frequency converter according to the return oil temperature. The actual speed of the motor is fed back to the frequency converter by the encoder in real time. The system compares the target speed and the actual speed of the motor, and adjusts the motor speed in real time to be infinitely close to the target speed, ultimately controlling the cooling effect of the cooler.

[0057] 5. The fuel in the fuel tank enters the fuel consumption meter through the inlet pipe, then flows into the engine through the outlet pipe for combustion work. The unburned fuel flows back to the oil cup of the fuel consumption meter through the return pipe, and the return oil in the oil cup enters the engine through the outlet pipe for combustion work again. During this period, the fuel consumed by the engine can be measured by the flow of the fuel flowing into the fuel consumption meter through the inlet pipeline of the metering fuel tank.

[0058] 6. The fuel burned by the engine contains a large amount of gas. Therefore, this system is equipped with an automatic exhaust device on the fuel consumption meter to timely exhaust the gas contained in the fuel in the return oil pipeline, increasing the accuracy of fuel consumption measurement.

[0059] The following describes the mining dump truck provided by the present utility model. The mining dump truck described below can be mutually corresponding and referred to with the fuel consumption metering system with automatic oil temperature adjustment described above.

[0060] A mining dump truck provided by the present utility model may include the fuel consumption metering system with automatic oil temperature adjustment as described in any one of the above embodiments.

[0061] The beneficial effects achieved by the mining dump truck provided by the present utility model are consistent with the beneficial effects achieved by the fuel consumption metering system with automatic oil temperature adjustment provided by the present utility model, so they will not be elaborated here.

[0062] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0063] In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features contained in other embodiments rather than other features, the combination of the features of different embodiments also means that it is within the protection scope of the present utility model and forms different embodiments. For example, in the above embodiments, those skilled in the art can use them in a combined manner according to the known technical solutions and the technical problems to be solved by this application.

[0064] The above description is only the preferred embodiments of the present utility model and does not impose any form of limitation on the present utility model. Although the present utility model has been disclosed as above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, can make some changes or modifications using the technical content prompted above to form equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An oil consumption measurement system with automatic oil temperature adjustment, characterized in that Including: A fuel consumption measurement system, including a fuel tank, a fuel consumption meter, and an engine. The fuel tank is connected to the fuel consumption meter through an inlet pipe, and the fuel consumption meter is connected to the engine through an outlet pipe. An oil return cooling system, including a cooler and a heat dissipation system. The cooler is connected in series on the oil return pipe between the engine and the fuel consumption meter. The fuel heated by the engine enters the cooler through the oil return pipe and then flows into the fuel consumption meter after cooling. The heat dissipation system acts on the cooler to increase or decrease the cooling capacity of the cooler, so that the engine oil return temperature is maintained near the fuel temperature in the fuel tank.

2. The fuel consumption measurement system for automatically adjusting the oil temperature according to claim 1, characterized in that The heat dissipation system includes: A first temperature sensor installed in the fuel tank for real-time monitoring of the fuel temperature in the fuel tank. A second temperature sensor installed at the oil return port of the fuel consumption meter for real-time monitoring of the engine oil return temperature. A heat dissipation component arranged at the cooler for dissipating heat from the cooler. A controller electrically connected to the first and second temperature sensors and the heat dissipation component. The controller takes the fuel temperature detected in the fuel tank as the target temperature and changes the heat dissipation capacity of the heat dissipation component in real time according to the comparison of the engine oil return temperature.

3. The fuel consumption measurement system for automatically adjusting the oil temperature according to claim 2, characterized in that: The heat dissipation component is a fan, which includes a motor and blades fixedly connected thereto. The motor drives the blades to rotate for air convection. The controller is electrically connected to a frequency converter, and the frequency converter is electrically connected to the motor. The controller controls the working power frequency of the frequency converter through a signal command to adjust the rotation speed of the motor.

4. The fuel consumption measurement system for automatically adjusting the oil temperature according to claim 3, characterized in that: An encoder is installed on the motor, and the encoder is electrically connected to the frequency converter for feeding back the real-time monitored motor rotation speed to the frequency converter.

5. The fuel consumption measurement system for automatically adjusting the oil temperature according to claim 1, characterized in that: The outer shell of the fuel tank is spliced by rigid plates. A plurality of anti-surge plates for preventing oil surges are installed inside the fuel tank. An exhaust device is provided on the fuel tank for timely discharging the gas in the fuel tank.

6. The fuel consumption measurement system for automatically adjusting the oil temperature according to claim 1, characterized in that: The fuel consumption meter is internally provided with a flow meter. The inlet and outlet of the fuel consumption meter are connected through the flow meter for measuring fuel consumption.

7. The fuel consumption measurement system for automatically adjusting the oil temperature according to claim 1, characterized in that: The fuel consumption meter is provided with an oil cup. The unburned fuel of the engine flows back to the oil cup through the oil return pipe, and the oil return in the oil cup enters the engine through the outlet pipe to continue to burn and do work.

8. The fuel consumption measurement system for automatically adjusting the oil temperature according to claim 1, characterized in that: An automatic exhaust device is provided on the fuel consumption meter for timely exhausting the gas contained in the fuel in the oil return pipe.

9. The fuel consumption measurement system for automatically adjusting the oil temperature according to claim 1, characterized in that: The cooler is composed of a frame and heat dissipation pipes. The heat dissipation pipes are fixed by the frame, and the hot fuel passes through the heat dissipation pipes for heat dissipation.

10. A mining dump truck, characterized in that: An oil consumption metering system for automatically adjusting oil temperature according to any one of claims 1 to 9.

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