An engine power loss reduction device and control method for mine hybrid power

Abstract

The present invention relates to the technical field of control devices, and specifically to a device for reducing power loss in a hybrid power engine for mining and a control method. The device comprises a vehicle control system; a displacement sensor, which is placed on the vehicle throttle and connected to the vehicle control system; an explosion-proof engine, which provides power for the vehicle; an exhaust gas treatment box, into which a fixed amount of water is injected to cool the exhaust gas of the explosion-proof engine and filter sparks; a water supply tank, into which a sufficient amount of water is injected to replenish the exhaust gas treatment box when the water level in the exhaust gas treatment box is insufficient; a liquid level sensor a and a liquid level sensor b, which are respectively placed in the exhaust gas treatment box and the water supply tank in the explosion-proof device, and the liquid level sensors a and b are connected to the vehicle control system; and a switch device is connected between the exhaust gas treatment box and the water supply tank. The present invention can solve the problem of excessive engine power loss when the current explosion-proof device of the explosion-proof engine treats exhaust gas.

Description

Technical Field

[0001] The present invention relates to the technical field of control devices, and in particular to a power loss reduction device and a control method for a hybrid power engine for mining. Background Art

[0002] Explosion-proof vehicles are an important type of auxiliary transportation equipment in underground mines, which can greatly improve coal transportation and production efficiency. However, since the power source of the explosion-proof vehicles currently used is explosion-proof diesel engines, which generate high-temperature exhaust gas and sparks, explosion-proof devices have been added. The explosion-proof engine explosion-proof device used in traditional underground transportation vehicles treats the engine exhaust gas according to the standard when the engine is operating at its maximum rated power. This explosion-proof device injects a certain amount of water into the exhaust gas treatment box, which cools the engine exhaust gas and filters sparks while also causing power loss. In addition, the liquid level of the water injected into the exhaust gas treatment box is always maintained at the highest position. When the explosion-proof engine operates at a low power, the engine explosion-proof device has a greater resistance to exhaust gas discharge, resulting in a greater power loss of the engine, more exhaust gas emissions underground, and more fuel consumption.

[0003] With the vigorous promotion and expansion of the new energy industry, hybrid mining vehicles are gradually being used in mines. However, the explosion-proof devices they use are still the same as those used in traditional explosion-proof vehicles, which results in excessive power loss in the explosion-proof engine. Therefore, we took a series hybrid mining vehicle as our research object. To reduce the power loss of the explosion-proof engine on a series hybrid mining vehicle, we developed a device to reduce the power loss of the explosion-proof engine on a series hybrid mining vehicle, referring to the explosion-proof devices used in traditional explosion-proof vehicles. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a series hybrid explosion-proof light truck for mining.

[0005] The present invention adopts the following technical solutions: a device for reducing power loss of a mining hybrid engine, comprising a vehicle control system;

[0006] Displacement sensor: The displacement sensor is placed on the vehicle throttle and connected to the vehicle control system;

[0007] An explosion-proof engine provides power to the vehicle;

[0008] Exhaust gas treatment box, a certain amount of water is injected into the exhaust gas treatment box to cool the exhaust gas of the explosion-proof engine and filter sparks;

[0009] Water supply tank: sufficient water is injected into the water supply tank to replenish water when the water level in the exhaust gas treatment tank is insufficient;

[0010] Liquid level sensor a and liquid level sensor b, liquid level sensor a and liquid level sensor b are respectively placed in the exhaust gas treatment box and the water supply tank in the explosion-proof device, and liquid level sensor a and liquid level sensor b are connected to the vehicle control system;

[0011] A switch device is connected between the exhaust gas treatment box and the water supply tank.

[0012] In some embodiments, the switching device is a water pump e and a water pump f connected between the exhaust gas treatment tank and the water supply tank. The exhaust gas treatment tank injects water into the water supply tank through the water pump e and the solenoid valve c, and the water supply tank injects water into the exhaust gas treatment tank through the water pump f and the solenoid valve d. The water pump e and the water pump f are controlled to run and stop by the vehicle control system; the solenoid valve c and the solenoid valve d are controlled to open and close by the vehicle control system.

[0013] The test simulated the operating state of the explosion-proof engine in an explosion-proof vehicle under normal operating conditions. The engine's output power was collected at different fluid levels, while meeting exhaust gas treatment requirements. A fluid level curve corresponding to the output power was plotted. The effect of varying fluid levels in the exhaust gas treatment tank on the engine's output power was analyzed. The fluid level that maximized the engine's output power was calculated, and the resulting data was segmented to meet actual operating conditions.

[0014] A method for controlling a device for reducing power loss of a hybrid power engine for mining comprises the following steps:

[0015] S100: After the vehicle starts running, the vehicle control system receives a signal indicating that the explosion-proof engine has started, and then obtains information about the engine's output power through a displacement sensor and obtains information about the liquid level in the exhaust gas treatment tank of the explosion-proof device through a liquid level sensor a;

[0016] S200: Matching and judging based on the output power and liquid level collected by S100;

[0017] S300: According to the result of the matching judgment, the vehicle control system controls the switches of the solenoid valve c, the solenoid valve d, the water pump e and the water pump f to adjust the water level in the exhaust gas treatment box so that the liquid level in the exhaust gas treatment box is at a certain level.

[0018] In some embodiments, in step S300, the specific process of adjusting the water level in the exhaust gas treatment box is as follows:

[0019] S301: When the liquid level is lower than the power adaptation height, the vehicle control system controls solenoid valve c and water pump e to open, and closes solenoid valve d and water pump f to pump water from the exhaust gas treatment tank into the water supply tank. This continues until the output power of the explosion-proof engine matches the liquid level in the exhaust gas treatment tank. At this point, the vehicle control system controls solenoid valve d and water pump f to close.

[0020] S302: When the liquid level is greater than the power adaptation height, the vehicle control system controls the solenoid valve c and the water pump e to close, and opens the solenoid valve d and the water pump f to pump the water in the water supply tank into the exhaust gas treatment tank (8) to replenish the liquid level; until the output power of the explosion-proof engine matches the liquid level in the exhaust gas treatment tank, the vehicle control system controls the solenoid valve d and the water pump f to close.

[0021] In some embodiments, the power adaptation height is the optimal liquid level height information of the explosion-proof engine that can meet the explosion-proof requirements in a set power range based on experimental calibration.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The present invention can solve the problem of excessive engine power loss when the current explosion-proof engine explosion-proof device treats exhaust gas;

[0024] (2) The control system of the present invention is an automatic control system that does not require additional operations and is sufficiently convenient;

[0025] (3) The present invention can circulate the water in the exhaust gas treatment tank and the water supply tank, which can achieve a better cooling effect;

[0026] (4) The present invention automatically matches the output power of the explosion-proof engine with the liquid level height of the exhaust gas treatment box of the explosion-proof device, effectively reducing the problem of excessive power loss during the explosion-proof treatment of the engine exhaust gas, and can effectively save energy and reduce emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the explosion-proof device for reducing power loss of a hybrid power engine for mining provided by an embodiment of the present invention;

[0028] Figure 2 This is a flow chart of the control algorithm program of an embodiment of the present invention; DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] A device for reducing power loss of a mining series hybrid engine, the main technologies of which are:

[0031] Vehicle control system 1: Processes sensor information and controls the opening and closing of solenoid valves and pumps.

[0032] Displacement Sensor 2: Placed on the vehicle's throttle and connected to the vehicle's main control system, the sensor captures throttle displacement, converts it into vehicle output power, and transmits it to the vehicle's control system.

[0033] Explosion-proof engine 3: provides power for the vehicle.

[0034] Liquid level sensors A4.1 and B4.2 are located in the exhaust gas treatment tank and water supply tank of the explosion-proof device and are connected to the vehicle's main control system. These sensors detect the water levels in the water supply tank and exhaust gas treatment tank and transmit this information to the vehicle's control system.

[0035] Solenoid valve c5.1 and solenoid valve d5.2: Connect the exhaust gas treatment box and water supply tank in the explosion-proof device, and control the opening and closing of the solenoid valve through the vehicle control system.

[0036] Water pump e6.1 and water pump f6.2: Connect the exhaust gas treatment box and water supply tank in the explosion-proof device, and control the operation and stop of the pump through the vehicle control system.

[0037] Water supply tank 7: Sufficient water is injected into the tank, and water is added when the water in the exhaust gas treatment tank is insufficient.

[0038] Exhaust gas treatment box 8: A certain amount of water is injected into the box to cool the engine exhaust and filter sparks, playing an explosion-proof role.

[0039] A method for controlling a device for reducing power loss of a hybrid power engine for mining comprises the following steps:

[0040] S100: After the vehicle starts running, the vehicle control system 1 receives a signal indicating that the explosion-proof engine 3 is started, and then obtains the engine's output power information through the displacement sensor 2 and the liquid level height in the explosion-proof device exhaust gas treatment box 8 through the liquid level sensor a4.1;

[0041] S200: Matching and judging based on the output power and liquid level collected by S100;

[0042] S300: Based on the matching judgment result, the vehicle control system 1 controls the switches of the solenoid valve c5.1, the solenoid valve d5.2, the water pump e6.1 and the water pump f6.2 to adjust the water level in the exhaust gas treatment box so that the liquid level in the exhaust gas treatment box 8 is high.

[0043] In step S300, the specific process of adjusting the water level in the exhaust gas treatment box is as follows:

[0044] S301: When the liquid level is lower than the power adaptation height, the vehicle control system 1 controls the solenoid valve c5.1 and water pump e6.1 to open, and closes the solenoid valve d5.2 and water pump f6.2 to pump water from the exhaust gas treatment tank 8 into the water supply tank 7. This continues until the output power of the explosion-proof engine 3 matches the liquid level in the exhaust gas treatment tank 8. At this point, the vehicle control system 1 controls the solenoid valve d5.2 and water pump f6.2 to close.

[0045] S302: When the liquid level is greater than the power adaptation height, the vehicle control system 1 controls the solenoid valve c5.1 and the water pump e6.1 to close, and opens the solenoid valve d5.2 and the water pump f6.2 to pump the water in the water supply tank 7 into the exhaust gas treatment tank 8 to replenish the liquid level; until the output power of the explosion-proof engine 3 matches the liquid level in the exhaust gas treatment tank 8, the vehicle control system 1 controls the solenoid valve d5.2 and the water pump f6.2 to close.

[0046] The power adaptation height is the optimal liquid level height information of the explosion-proof engine that can meet the explosion-proof requirements in the set power range based on experimental calibration.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for reducing power loss of a mining hybrid engine, comprising: Vehicle control system (1); A displacement sensor (2), the displacement sensor (2) is placed on the vehicle throttle and connected to the vehicle control system (1); An explosion-proof engine (3) to provide power for the vehicle; An exhaust gas treatment box (8) is filled with a fixed amount of water for cooling the exhaust gas of the explosion-proof engine (3) and filtering sparks; A water supply tank (7) is provided with sufficient water, and water is added to the water supply tank (7) when the water level in the exhaust gas treatment tank (8) is insufficient; Liquid level sensor a (4.1) and liquid level sensor b (4.2), liquid level sensor a (4.1) and liquid level sensor b (4.2) are respectively placed in the exhaust gas treatment box (8) and the water supply tank (7) in the explosion-proof device, and liquid level sensor a (4.1) and liquid level sensor b (4.2) are connected to the vehicle control system (1); A switch device is connected between the exhaust gas treatment box (8) and the water supply tank (7); The invention is characterized in that: the switch device is a water pump e (6.1) and a water pump f (6.2) connected between the exhaust gas treatment box (8) and the water supply tank (7); the exhaust gas treatment box (8) injects water into the water supply tank (7) through the water pump e (6.1) and the solenoid valve c (5.1); the water supply tank (7) injects water into the exhaust gas treatment box (8) through the water pump f (6.2) and the solenoid valve d (5.2); the water pump e (6.1) and the water pump f (6.2) are controlled to run and stop by the vehicle control system (1); the solenoid valve c (5.1) and the solenoid valve d (5.2) are controlled to open and close by the vehicle control system (1).

2. A control method for reducing power loss of a mining hybrid engine according to claim 1, characterized in that: The following steps are included: S100: After the vehicle starts running, the vehicle control system (1) receives the start-up signal of the explosion-proof engine (3), then obtains the output power information of the engine through the displacement sensor (2), and obtains the liquid level height in the exhaust gas treatment box (8) of the explosion-proof device through the liquid level sensor a (4.1); S200: Matching and judging based on the output power and liquid level collected by S100; S300: Based on the result of the matching judgment, the vehicle control system (1) controls the switches of the solenoid valve c (5.1), the solenoid valve d (5.2), the water pump e (6.1) and the water pump f (6.2), and adjusts the water level in the exhaust gas treatment box so that the liquid level in the exhaust gas treatment box (8) matches the engine output power.

3. The control method for reducing power loss of a mining hybrid engine according to claim 2, characterized in that: In step S300, the specific process of adjusting the water level in the exhaust gas treatment box is as follows: S301: When the liquid level is lower than the power adaptation height, the vehicle control system (1) controls the solenoid valve c (5.1) and the water pump e (6.1) to open, and closes the solenoid valve d (5.2) and the water pump f (6.2), so as to pump the water in the exhaust gas treatment tank (8) into the water supply tank (7); until the output power of the explosion-proof engine (3) matches the liquid level in the exhaust gas treatment tank (8), the vehicle control system (1) controls the solenoid valve d (5.2) and the water pump f (6.2) to close; S302: When the liquid level is greater than the power adaptation height, the vehicle control system (1) controls the electromagnetic valve c (5.1) and the water pump e (6.1) to close, and opens the electromagnetic valve d (5.2) and the water pump f (6.2) to pump the water in the water supply tank (7) into the exhaust gas treatment tank (8) to replenish the liquid level; until the output power of the explosion-proof engine (3) matches the liquid level in the exhaust gas treatment tank (8), the vehicle control system (1) controls the electromagnetic valve d (5.2) and the water pump f (6.2) to close.

4. The control method for reducing power loss of a mining hybrid engine according to claim 3, characterized in that: The power adaptation height is the optimal liquid level height information of the explosion-proof engine that can meet the explosion-proof requirements in the set power range based on experimental calibration.

Images