Engine external exhaust gas heating oil water removal device

Abstract

The utility model discloses an engine external tail gas heating machine oil water trap, its characterized in that: water trap is connected with engine, and it includes heating case, condensing board, water storage tank, oil inlet pipe, oil return pipe and heating device, heating device includes heat exchange tube, check valve, the air inlet end and the air outlet end of heat exchange tube are connected the muffler rear pipeline of engine exhaust system respectively, and the middle part pipe body is located in heating case, check valve is located in the air outlet end of heat exchange tube, one end of oil inlet pipe is connected heating case, and the other end is connected engine oil pump rear oil pipe, one end of oil return pipe is connected the bottom of heating case, and the other end is connected oil pan, the upper portion of heating case is equipped with water storage tank and condensing board, and water storage tank is located below condensing board, the utility model discloses through setting heating case and heating the engine oil that shunts out to remove water, and then reduce the risk of oil emulsification.

Description

Technical Field

[0001] This utility model relates to the field of preventing engine oil emulsification, and in particular to an external exhaust gas heating oil dehydration device for engines. Background Technology

[0002] When hydrogen is burned in an internal combustion engine, water is produced and can get into the engine oil. The mixture of water and oil can easily cause oil emulsification, reducing oil viscosity, decreasing lubrication, accelerating engine wear, and even leading to engine failure. Therefore, to reduce the risk of oil emulsification, it is necessary to remove water from the engine oil promptly.

[0003] Existing patent document CN119914393B discloses a device and method for demulsifying emulsified engine oil in a hydrogen engine. Through a vortex tube system and an emulsified engine oil heating system, it is possible to use only the engine exhaust energy to heat and demulsify the emulsified engine oil. The cold air generated by the vortex tube can also be used for the liquefaction and output of water vapor, achieving two goals at once, thereby timely solving the problem of severe oil emulsification caused by low-temperature start-up conditions in hydrogen engines.

[0004] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0005] The main purpose of this utility model is to propose an external exhaust gas heating oil dehydration device for engines, which heats and removes water from the diverted engine oil by setting up a heating box, thereby reducing the risk of oil emulsification.

[0006] Therefore, this utility model proposes an external exhaust gas heating oil dehydration device for engines.

[0007] Preferably, the present invention may also have the following technical features:

[0008] An external exhaust gas heating oil dehydration device for engines is disclosed. The device is connected to the engine and includes a heating chamber, a condenser plate, a water reservoir, an oil inlet pipe, an oil return pipe, and a heating element. The heating element includes a heat exchange pipe and a one-way valve. The inlet and outlet ends of the heat exchange pipe are connected to the muffler rear pipe of the engine exhaust system, with the middle pipe body located inside the heating chamber. The one-way valve is located at the outlet end of the heat exchange pipe. One end of the oil inlet pipe is connected to the heating chamber, and the other end is connected to the oil pump rear pipe of the engine. One end of the oil return pipe is connected to the bottom of the heating chamber, and the other end is connected to the oil pan. The water reservoir and condenser plate are installed on the upper part of the heating chamber, with the water reservoir located below the condenser plate.

[0009] Furthermore, the heat exchange tube is made of copper, and its inlet end is equipped with a proportional solenoid valve, while its outlet end is equipped with a one-way valve.

[0010] Furthermore, a temperature sensor is installed inside the heating chamber.

[0011] Furthermore, the air intake flow rate of the heat exchange tube accounts for 20% to 30% of the flow rate of the pipeline after the silencer.

[0012] Furthermore, the oil intake flow rate of the oil inlet pipe accounts for 10% of the output flow rate of the oil pump.

[0013] Furthermore, the heat exchange tube located inside the heating box has a coil structure.

[0014] Furthermore, the condenser plate is a concave plate, and the water storage tank is located directly below the lowest end of the concave surface.

[0015] Furthermore, the concave surface is a V-shaped surface, and the water storage tank is located directly below the bottom of the V-shaped surface, with the water storage tank arranged along the length of the V-shaped surface.

[0016] Furthermore, the condenser plate divides the heating box into an upper chamber and a lower chamber that are not connected to each other. The upper chamber is equipped with a fan, an air inlet, and an air outlet. The fan is installed at the air inlet and blows air onto the lower condenser plate to cool it. The gas in the upper chamber is discharged from the air outlet.

[0017] Furthermore, it also includes a water level sensor, a drain pipe, and a solenoid valve. The water level sensor is installed inside the water storage tank. The front end of the drain pipe is connected to the bottom of the water storage tank, and the rear end extends to the outside of the heating box. The solenoid valve is installed on the pipe extending from the drain pipe to the outside of the heating box.

[0018] The beneficial effects of this utility model compared with the prior art include: using the high-temperature exhaust gas of the engine to heat the oil delivered to the heating box to 110-120°C, causing the water in the oil to evaporate into water vapor. The water vapor moves upward and condenses into water droplets after being released from the condenser plate. The water droplets drip from the condenser plate into the water storage tank below. When the oil in the heating box flows back to the oil pan, the water content in the oil is reduced, effectively reducing the risk of oil emulsification. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0021] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0022] like Figure 1 The diagram illustrates an external exhaust gas heating oil dehydration device for engines. The device is connected to the engine and includes a heating chamber 1, a condenser plate 10, a water storage tank 9, an oil inlet pipe 8, an oil return pipe 6, and a heating element. The heating element includes a heat exchange pipe 15 and a one-way valve 3. The inlet end of the heat exchange pipe 15 is connected to the muffler rear pipe 4 of the engine exhaust system to take in air (the intake flow rate accounts for 20%~30% of the flow rate in the muffler rear pipe 4). The middle part of the heat exchange pipe 15 is located in the middle or lower part of the heating chamber 1. The outlet end 16 of the heat exchange pipe returns air to the muffler rear pipe 4 of the exhaust system and is located after the intake point. The one-way valve 3 is provided at the outlet end 16 of the heat exchange pipe to prevent exhaust gas from backflowing from the engine exhaust pipe. One end of the oil inlet pipe 8 is connected to the heating chamber 1, and the other end is connected to the oil pipe (such as the main oil passage) after the engine oil pump 13. A portion of the pressurized oil is diverted into the heating chamber 1 to heat and evaporate the water in the oil. One end of the oil return pipe 6 is connected to the bottom of the heating box 1, and the other end is connected to the oil pan, forming a circuit. The water storage tank 9 and the condenser plate 10 are installed on the upper part of the heating box 1, with the water storage tank 9 located below the condenser plate 10. In this way, the high-temperature exhaust gas from the engine heats the oil delivered to the heating box 1 to 110-120℃, causing the water in the oil to evaporate into water vapor. The water vapor rises and condenses into water droplets after passing over the condenser plate 10. The water droplets drip from the condenser plate 10 to the water storage tank 9 below. When the oil in the heating box 1 flows back to the oil pan, the water content in the oil decreases, effectively reducing the risk of oil emulsification. The heating box 1 is equipped with a temperature sensor 7, and a proportional solenoid valve 5 is arranged at the air inlet end of the copper exhaust gas heat exchanger pipe 15. The temperature sensor 7 and the proportional solenoid valve 5 work together to maintain the temperature of the copper exhaust gas heat exchanger pipe 15 within the range of 110-120℃, ensuring that the water is evaporated while the oil does not coke.

[0023] Preferably, the heat exchange tube 15 located inside the heating box 1 has a coiled tube 14 structure, which increases the contact area and time between the heat exchange tube 15 and the oil in the heating box 1, and can fully utilize the waste heat of the engine exhaust to quickly heat the oil, thereby improving the oil's water evaporation efficiency.

[0024] Preferably, the condenser plate 10 is a concave plate, and the water storage tank 9 is located directly below the lowest point of the concave surface. This concave design allows water droplets to flow along the concave surface when water vapor condenses on the condenser plate 10, ultimately being collected by the water storage tank 9, thus increasing the amount of condensate recovered by the water storage tank 9.

[0025] In one embodiment of the concave surface of the above technical solution, the concave surface is a V-shaped surface, and the water storage tank 9 is provided directly below the bottom of the V-shaped surface. The water storage tank 9 is arranged along the length direction of the V-shaped surface to fully recover the condensate on the condenser plate.

[0026] Preferably, the concave surface is a plurality of continuously arranged V-shaped surfaces, which increases the contact area with water vapor and improves condensation efficiency.

[0027] Preferably, the condenser plate 10 divides the heating chamber 1 into an upper chamber and a lower chamber that are not interconnected. The upper chamber is equipped with a fan 11, an air inlet 20, and an air outlet 19. The fan 11 is installed at the air inlet 20 and blows air onto the lower condenser plate 10 to cool it. The air from the upper chamber is discharged from the air outlet 19. By designing air inlets and outlets and a small fan at the top, heat is dissipated from the condenser plate 10 in a timely manner, ensuring good condensation of water droplets and guaranteeing water removal efficiency.

[0028] Preferably, the system also includes a water level sensor 12, a drain pipe 17, and a solenoid valve 2. The water level sensor 12 is installed inside the water storage tank 9 to obtain the liquid level of the water storage tank 9. The front end of the drain pipe 17 is connected to the bottom of the water storage tank 9, and the rear end extends to the outside of the heating box 1. The solenoid valve 2 is installed on the pipe extending from the drain pipe 17 to the outside of the heating box 1. In this way, a small portion of the oil pumped out by the engine oil pump (the oil intake flow rate accounts for 10% of the oil pump output flow rate) enters the heating box 1 through the oil inlet pipe 8 and is sprayed onto the copper exhaust gas heat exchange pipe 15 through several small holes 81 on the oil inlet pipe 8. The heat from the exhaust gas evaporates the water in the oil, and the water vapor condenses on the condenser plate 10 and drips into the water storage tank 9. When the water level sensor 12 detects that the water level in the water storage tank 9 has reached the set height, the controller 18 opens the solenoid valve 2 to drain the water. At the same time, the controller 18 can also control the proportional solenoid valve 5 and the fan 11 according to the oil temperature obtained by the temperature sensor 7.

[0029] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0030] Although exemplary embodiments of the present invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. An external exhaust gas heating oil dehydration device for engines, characterized in that: The water removal device is connected to the engine and includes a heating box, a condenser plate, a water tank, an oil inlet pipe, an oil return pipe, and a heating device. The heating device includes a heat exchange pipe and a one-way valve. The inlet and outlet ends of the heat exchange pipe are respectively connected to the muffler rear pipe of the engine exhaust system, and the middle pipe body is located inside the heating box. The one-way valve is located at the outlet end of the heat exchange pipe. One end of the oil inlet pipe is connected to the heating box, and the other end is connected to the oil pipe behind the engine oil pump. One end of the oil return pipe is connected to the bottom of the heating box, and the other end is connected to the oil pan. The water tank and the condenser plate are installed on the upper part of the heating box, and the water tank is located below the condenser plate.

2. The engine external exhaust gas heating oil dehydration device as described in claim 1, characterized in that: The heat exchange tube is made of copper, and its inlet end is equipped with a proportional solenoid valve, while its outlet end is equipped with a one-way valve.

3. The engine external exhaust gas heating oil dehydration device as described in claim 1, characterized in that: The heating box is equipped with a temperature sensor.

4. The engine external exhaust gas heating oil dehydration device as described in claim 1, characterized in that: The gas intake flow rate of the heat exchange tube accounts for 20% to 30% of the flow rate of the pipeline after the silencer.

5. The engine external exhaust gas heating oil dehydration device as described in claim 1, characterized in that: The oil intake flow rate of the oil inlet pipe accounts for 10% of the output flow rate of the oil pump.

6. The engine external exhaust gas heating oil dehydration device as described in claim 1, characterized in that: The heat exchange tubes located inside the heating box have a coil structure.

7. The engine external exhaust gas heating oil dehydration device as described in claim 1, characterized in that: The condenser plate is a concave plate, and the water storage tank is located directly below the lowest point of the concave surface.

8. The engine external exhaust gas heating oil dehydration device as described in claim 7, characterized in that: The concave surface is a V-shaped surface, and the water storage tank is located directly below the bottom of the V-shaped surface. The water storage tank is arranged along the length of the V-shaped surface.

9. The engine external exhaust gas heating oil dehydration device as described in claim 1, characterized in that: The condenser plate divides the heating box into an upper chamber and a lower chamber that are not connected to each other. The upper chamber is equipped with a fan, an air inlet, and an air outlet. The fan is installed at the air inlet and blows air onto the lower condenser plate to cool it. The gas in the upper chamber is discharged from the air outlet.

10. The engine external exhaust gas heating oil dehydration device as described in claim 1, characterized in that: It also includes a water level sensor, a drain pipe, and a solenoid valve. The water level sensor is installed in the water storage tank. The front end of the drain pipe is connected to the bottom of the water storage tank, and the rear end extends to the outside of the heating box. The solenoid valve is installed on the pipe extending from the drain pipe to the outside of the heating box.

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