Hydrogen engine and vehicle

Abstract

The application relates to the technical field of engines, in particular to an oil-gas separator, a hydrogen engine and a vehicle. The oil-gas separator comprises an oil-gas separator body, a hydrogen concentration detection device and a control device, wherein the oil-gas separator body comprises a separation cavity and a discharge cavity which are in communication with each other, the separation cavity is provided with an air inlet, the discharge cavity is provided with an air outlet, a rotating separation part is arranged in the separation cavity, the hydrogen concentration detection device is in communication with the discharge cavity, the control device is electrically connected with the hydrogen concentration detection device and the rotating separation part respectively, and the control device is used for controlling the rotating speed of the rotating separation part according to the hydrogen concentration value measured by the hydrogen concentration detection device. According to the application, when the hydrogen concentration is too high, the control device will increase the rotating speed of the rotating separation part, accelerate the discharge of high-concentration hydrogen, prevent the accumulation of hydrogen in the crankcase, reduce the explosion risk caused by the too high hydrogen concentration, and ensure the safety of the hydrogen fuel engine.

Description

Technical Field

[0001] The present application relates to the field of engine technology, and in particular to an oil-gas separator, a hydrogen engine and a vehicle. Background Art

[0002] Existing oil-gas separators are unable to monitor and control hydrogen concentrations in real time during the oil-gas separation process. This leads to significant safety hazards when hydrogen concentrations are too high, particularly during the operation of hydrogen-fueled engines. Hydrogen is highly flammable and explosive, and when it accumulates to a certain concentration in the crankcase, it can easily cause explosions and other safety accidents. Summary of the Invention

[0003] The present invention aims to at least solve the problem of excessive hydrogen in the crankcase, which can lead to explosion. This object is achieved by the following technical solutions:

[0004] A first aspect of the present invention provides an oil-gas separator, comprising:

[0005] An oil-gas separator body, the oil-gas separator body comprising a separation chamber and a discharge chamber that are interconnected, the separation chamber being provided with an air inlet, the discharge chamber being provided with an exhaust port, and a rotating separation portion being provided in the separation chamber;

[0006] a hydrogen concentration detection device, the hydrogen concentration detection device being in communication with the discharge chamber;

[0007] A control device is electrically connected to the hydrogen concentration detection device and the rotating separation part respectively, and is used to control the rotation speed of the rotating separation part according to the hydrogen concentration value measured by the hydrogen concentration detection device.

[0008] According to the oil-gas separator of the present invention, by arranging a hydrogen concentration detection device in the discharge chamber, the hydrogen concentration in the gas discharged from the separation chamber can be monitored in real time. This real-time monitoring function can quickly sense changes in hydrogen concentration and ensure that the oil-gas separator can respond in a timely manner. The control device is electrically connected to the hydrogen concentration detection device and the rotating separation part, and automatically adjusts the rotation speed of the oil-gas separator according to the detected hydrogen concentration. When the hydrogen concentration is too high, the control device will increase the rotation speed of the rotating separation part, accelerate the discharge of high-concentration hydrogen, and prevent hydrogen from accumulating in the crankcase. Through automation, the accumulation of hydrogen is effectively prevented, and the risk of explosion caused by excessively high hydrogen concentration is reduced. The safety of the hydrogen fuel engine in both working and shutdown states is ensured.

[0009] In addition, the oil-gas separator according to the present invention may also have the following additional technical features:

[0010] In some embodiments of the present application, the discharge cavity comprises a first chamber and a second chamber which are in communication with each other, the first chamber is in communication with the hydrogen concentration detection device, and the second chamber is in communication with the separation cavity and is provided with the exhaust port.

[0011] In some embodiments of the present application, the volume of the second chamber is greater than the volume of the first chamber.

[0012] A second aspect of the present application provides a control method applied to the oil-gas separator, comprising the following steps:

[0013] obtaining a hydrogen concentration value detected by the hydrogen concentration detection device;

[0014] controlling the rotating speed of the rotating separation part according to whether the hydrogen concentration value is greater than a set threshold value.

[0015] In some embodiments of the present application, controlling the rotating speed of the rotating separation part according to whether the hydrogen concentration value is greater than a set threshold value comprises:

[0016] determining whether the hydrogen engine is in a shutdown state;

[0017] if the hydrogen engine is in a shutdown state, maintaining the first rotating speed of the rotating separation part, and stopping the rotating separation part from operating after a preset time is reached;

[0018] if the hydrogen engine is not in a shutdown state, controlling the rotating speed of the rotating separation part to a second rotating speed, wherein the second rotating speed is greater than the first rotating speed.

[0019] In some embodiments of the present application, after adjusting the rotating speed of the rotating separation part to the second rotating speed according to whether the hydrogen engine is not in a shutdown state, the control method further comprises:

[0020] re-obtaining the hydrogen concentration value of the hydrogen concentration detection device;

[0021] controlling the rotating speed of the rotating separation part to the first rotating speed according to whether the hydrogen concentration value is less than a set threshold value.

[0022] In some embodiments of the present application, the set threshold value is 4%.

[0023] A third aspect of the present application provides a hydrogen engine, comprising:

[0024] an air intake system for mixing hydrogen and air;

[0025] a combustion chamber in communication with the air intake system, the combustion chamber comprising an ignition mechanism for igniting the mixed hydrogen and air;

[0026] An exhaust system comprising a crankcase and the above, the crankcase respectively communicating with the combustion chamber and the intake port.

[0027] In some embodiments of the present application, the hydrogen engine further comprises an on-board control unit, and the control device is electrically connected to the on-board control unit.

[0028] A fourth aspect of the present application provides a vehicle comprising:

[0029] The hydrogen engine described above;

[0030] A hydrogen storage device, which is connected to the intake system and used to provide hydrogen to the intake system;

[0031] A power transmission system, which is drivingly connected to the hydrogen engine. BRIEF DESCRIPTION OF DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the present application. Moreover, like reference numerals designate like parts throughout the several views. In the drawings:

[0033] Figure 1 A structural schematic diagram according to an embodiment of the present application is schematically shown;

[0034] Figure 2 A flow chart of a control method according to an embodiment of the present application.

[0035] Reference signs are as follows:

[0036] 100, oil-gas separator; 10, oil-gas separator body; 11, separation cavity; 111, intake port; 12, discharge cavity; 121, first chamber; 122, second chamber; 1221, exhaust port; 20, hydrogen concentration detection device; 30, control device. DETAILED DESCRIPTION

[0037] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms without being limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be thoroughly and completely understood, and so that the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0038] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0039] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0040] Spatially relative terms, such as "inner", "outer", "inward", "outward", "lower", "bottom", "top", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Such spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0041] As Figure 1As shown, according to the embodiment of the present application, an oil-gas separator 100 is provided, comprising an oil-gas separator body 10, a hydrogen concentration detection device 20 and a control device 30, wherein the oil-gas separator body 10 comprises a separation chamber 11 and a discharge chamber 12 in communication with each other, the separation chamber 11 is provided with an air inlet 111, the discharge chamber 12 is provided with an air outlet 1221, a rotating separation part is arranged in the separation chamber 11, the hydrogen concentration detection device is in communication with the discharge chamber 12, the control device 30 is electrically connected with the hydrogen concentration detection device 20 and the rotating separation part respectively, and the control device 30 is used for controlling the rotating speed of the rotating separation part according to the hydrogen concentration value measured by the hydrogen concentration detection device 20.

[0042] According to the oil-gas separator 100 of the present application, by arranging the hydrogen concentration detection device 20 in the discharge chamber 12, the hydrogen concentration in the gas discharged from the separation chamber 11 can be monitored in real time. This real-time monitoring function can quickly perceive the change of hydrogen concentration, ensuring that the oil-gas separator 100 can respond in time. The control device 30 is electrically connected with the hydrogen concentration detection device 20 and the rotating separation part, and automatically adjusts the rotating speed of the oil-gas separator according to the detected hydrogen concentration. When the hydrogen concentration is too high, the control device 30 will increase the rotating speed of the rotating separation part to accelerate the discharge of high-concentration hydrogen, preventing the accumulation of hydrogen in the crankcase. Through automation, the accumulation of hydrogen is effectively prevented, and the risk of explosion caused by too high hydrogen concentration is reduced. The safety of hydrogen fuel engine in working and shutdown state is ensured.

[0043] It can be understood that the oil-gas separator body 10 comprises the separation chamber 11 and the discharge chamber 12, the air inlet 111 is arranged at the top of the separation chamber 11 for receiving the oil-gas mixture from the crankcase, and the oil discharge pipe is connected to the bottom of the separation chamber 11. The air inlet 111 is provided with a filter screen to prevent larger particles from entering. Through the high-speed rotation of the rotating separation part, the oil and gas in the oil-gas mixture are separated by centrifugal force. The oil is thrown to the inner wall of the separation chamber 11 due to its larger density, and is collected and then flows out through the oil discharge pipe. The gas is concentrated in the center of the separation chamber 11 and enters the discharge chamber 12 through the gas discharge pipe. The air outlet is arranged at the top or side of the discharge chamber 12 for discharging the treated gas. The discharge chamber 12 collects the gas separated from the separation chamber 11 and monitors the hydrogen concentration in the gas in real time through the hydrogen concentration detection device 20.

[0044] It can be understood that the hydrogen concentration detection device 20 is not arranged in the air inlet 111 of the oil-gas separator body 10 or the pipeline leading to the air inlet 111 of the crankcase, because the hydrogen concentration in the air inlet 111 or the pipeline leading to the air inlet 111 is usually the initial concentration of the mixed gas. The gas composition in these positions is mixed, and the measurement result may be disturbed by air, fuel and other impurities, resulting in inaccurate measurement. After passing through the separation chamber 11 of the oil-gas separator body 10, the gas composition has been effectively separated, and the oil and other impurities in the gas have been removed, and the hydrogen concentration is more pure. At this time, the detected hydrogen concentration is more accurate, and the interference of external impurities on the measurement result is reduced. At the same time, the hydrogen concentration in the discharge chamber 12 directly reflects the amount of hydrogen that is not completely combusted or separated during engine operation. The measurement at these positions can reflect the accumulation of hydrogen in the system in real time, and timely measures can be taken to control the hydrogen concentration to avoid safety risks such as explosion. By arranging the hydrogen concentration detection device 20 in the discharge chamber 12 after the separation chamber 11 of the oil-gas separator body 10, the working of the oil-gas separator can be better combined, the system operation can be optimized, the oil-gas separation efficiency can be improved, and the composition of the separated gas can be ensured to be more pure. In summary, by arranging the hydrogen concentration detection device 20 in the discharge chamber 12 after the separation chamber 11 of the oil-gas separator body 10, the measurement accuracy can be significantly improved, the system safety can be enhanced, the system efficiency can be optimized, and real-time monitoring and dynamic adjustment can be realized, to ensure the efficient and safe operation of the hydrogen fuel engine.

[0045] Specifically, the discharge chamber 12 is arranged on one side of the separation chamber 11 and is spaced apart from the separation chamber 11. The discharge chamber 12 and the separation chamber 11 are connected through a communication passage. The communication passage is arranged at the top of the separation chamber 11 and is connected with the discharge chamber 12. The communication passage is a circular hole to reduce air resistance and ensure smooth gas flow. The gas rises in the separation chamber 11 under the action of centrifugal force of the rotating separation part, and the oil settles at the bottom under the joint action of centrifugal force and gravity. Arranging the communication passage at the top can ensure that only the separated gas enters the discharge chamber 12, and the settled oil stays at the bottom of the separation chamber 11 and is discharged through the oil discharge pipeline. Arranging the communication passage at the top can effectively prevent the oil from entering the discharge chamber 12 through the communication passage and ensure that the discharge chamber 12 mainly contains gas components.

[0046] Specifically, the rotating separation part includes an impeller, a rotor, a bearing and a motor. The bearing is arranged at the bottom of the separation chamber 11, and the rotor is connected with the bearing and rotates along the center line of the bearing. At the same time, the rotor is the driving part of the impeller, which is connected with the motor to make the impeller rotate at high speed.

[0047] It can be understood that the hydrogen concentration detection device 20 is a hydrogen sensor, which includes a housing, a control circuit, a signal processing unit, a gas inlet and a sensing element. The housing is provided with a gas inlet, which is a small hole or a porous membrane, used to guide the gas into the sensor interior to ensure that the sensing element can fully contact the gas to be measured. The gas inlet provides a channel for hydrogen to enter the sensor while preventing dust and particles from entering. The sensing element is located in the housing downstream of the gas inlet (in the direction of gas flow), and the signal processing unit converts the analog signal of the sensing element into a digital signal and performs amplification and filtering to improve the accuracy and stability of the signal. The control circuit converts the processed signal into a hydrogen concentration value according to the preset calibration curve and communicates with the control device 30 through the communication interface.

[0048] In some embodiments, the discharge chamber 12 includes a first chamber 121 and a second chamber 122 that are in communication with each other. The first chamber 121 is in communication with the hydrogen concentration detection device 20, and the second chamber 122 is in communication with the separation chamber 11 and is provided with an exhaust port 1221. The first chamber 121 is arranged in the discharge chamber 12 and is in communication with the hydrogen concentration detection device 20. The first chamber 121 is designed with a gas guiding channel inside to ensure that the gas sample can smoothly enter the hydrogen sensor. The second chamber 122 is in communication with the separation chamber 11 and is provided with an exhaust port 1221 for discharging the separated and detected gas. The second chamber 122 is designed with a baffle or a flow guide inside to control the direction of gas flow and ensure smooth flow of gas into the first chamber 121. By dividing the discharge chamber 12 into the first chamber 121 and the second chamber 122 and connecting them through the connecting channel, the flow of gas in the discharge chamber 12 is more stable. This can avoid turbulence of the gas flow and ensure that the gas sample detected by the hydrogen sensor is representative and accurate. At the same time, the hydrogen sensor is located in the first chamber 121 and contacts the gas through an independent gas guiding channel. This can avoid interference of other factors on the detection result and improve the accuracy and sensitivity of hydrogen concentration detection. In addition, the second chamber 122 is in communication with the separation chamber 11 and is provided with an exhaust port 1221, which can ensure that the separated gas has been preliminarily discharged and purified before entering the detection stage. This can improve the discharge efficiency of the entire system and ensure the orderly flow of gas.

[0049] Specifically, the first chamber 121 and the second chamber 122 are integrated, and the flow guide plate is installed inside the second chamber 122, close to the side of the communication port of the separation chamber 11. The discharge chamber 12 is designed in an integrated structure, reducing the complexity of assembly and connection, improving the reliability and durability of the system, and simplifying the manufacturing process and maintenance work. The inclination angle of the flow guide plate is designed to be 45 degrees to ensure smooth gas flow to the first chamber 121. The flow guide plate is arc-shaped or planar inclined plate to reduce air resistance and ensure smooth gas flow. The edge of the flow guide plate is designed to be smooth transition to avoid airflow separation and turbulence. By setting the flow guide plate in the second chamber 122, the gas is fully guided before entering the first chamber 121, reducing airflow turbulence and ensuring the stability of the gas sample, improving the detection accuracy of the hydrogen sensor.

[0050] It can be understood that the volume of the second chamber 122 is greater than the volume of the first chamber 121. The volume of the second chamber 122 is greater than the first chamber 121, providing sufficient buffer space for the gas entering from the separation chamber 11 to fully diffuse and stabilize in the second chamber 122. This helps to slow down the airflow speed, reduce turbulence, and improve the stability of gas flow. The large-capacity second chamber 122 can fully mix and homogenize the gas before entering the first chamber 121, avoiding local concentration fluctuations in the airflow, thereby improving the detection accuracy of the hydrogen sensor.

[0051] In some embodiments, the gas outlet of the oil and gas separator body 10 is provided with a redundant hydrogen sensor, the purpose is to ensure that when one sensor fails, the control device 30 can still detect the hydrogen concentration normally. At the same time, the control device 30 will analyze the data between the hydrogen concentration detection device and the redundant sensor, with self-diagnosis ability, timely discovery and processing of faults.

[0052] In addition, as Figure 2As shown, the present embodiment also includes a control method applied to the oil-gas separator 100, including the following steps: obtaining the hydrogen concentration value detected by the hydrogen concentration detection device 20, and controlling the rotating speed of the rotating separation part according to the hydrogen concentration value being greater than the set threshold. The specific process is as follows: the hydrogen concentration detection device 20 detects the hydrogen concentration in the discharge cavity 12 through the sensing element, and generates the corresponding electric signal. The control device 30 converts the electric signal of the sensor into the hydrogen concentration value through the signal processing unit, and performs data processing. The control device 30 compares the detected hydrogen concentration value with the preset safe concentration value (for example, 4% or other set value). If the detected value is lower than the set threshold, the system remains in the current operating state. If the detected value is higher than the set threshold, the corresponding control action is triggered. When the hydrogen concentration is detected to be excessive, the control device 30 sends a control signal to the motor of the rotating separation part to increase the rotating speed of the rotating separation part. By increasing the rotating speed of the rotating separation part, the efficiency of oil-gas separation is increased, the discharge of high-concentration hydrogen gas is accelerated, and the hydrogen concentration in the discharge cavity 12 is reduced. The control method of the present embodiment obtains the hydrogen concentration detection value in real time, and dynamically adjusts the rotating speed of the rotating separation part according to the detection result. The system can quickly respond to the change of hydrogen concentration, and ensure that the hydrogen concentration in the discharge cavity 12 always remains within the safe range. When the hydrogen concentration is detected to be excessive, the rotating speed of the rotating separation part is increased in time, the discharge of high-concentration hydrogen gas is accelerated, and the risk of hydrogen accumulation in the system is reduced, thereby reducing the safety hazards such as explosion and fire.

[0053] In some embodiments, the control device 30 is electrically connected with the on-board control unit, and then the step of controlling the rotating speed of the rotating separation part according to the hydrogen concentration value greater than the set threshold value comprises the following steps: firstly, judging whether the hydrogen engine is in the shutdown state, if the hydrogen engine is in the shutdown state, maintaining the first rotating speed of the rotating separation part, and stopping the operation of the rotating separation part after reaching the preset time; if the hydrogen engine is not in the shutdown state, controlling the rotating speed of the rotating separation part to the second rotating speed. The specific process is as follows: obtaining the operation state signal of the hydrogen engine from the on-board control unit, and judging whether the hydrogen engine is in the shutdown state. If the hydrogen engine is in the shutdown state, the first rotating speed (lower rotating speed) of the rotating separation part is maintained to ensure that the gas can continue to be discharged. After reaching the preset operation time, the operation of the rotating separation part is stopped to ensure that the high-concentration hydrogen can be completely discharged in the shutdown state. If the hydrogen engine is not in the shutdown state, the control device 30 adjusts the rotating speed of the rotating separation part to the second rotating speed (higher rotating speed) according to the hydrogen concentration value to accelerate the discharge of high-concentration hydrogen and prevent the concentration from being too high. In the shutdown state, by maintaining the first rotating speed and stopping the operation after a preset time, it is ensured that the high-concentration hydrogen can be completely discharged when the engine is stopped. In the non-shutdown state, by adjusting to the second rotating speed, the discharge of high-concentration hydrogen is accelerated to prevent the hydrogen concentration from being too high and improve safety. At the same time, in the shutdown state, only the first rotating speed of the rotating separation part is maintained, and the operation is stopped after a proper time to reduce unnecessary energy consumption and equipment wear and tear, and prolong the service life of the equipment. In the non-shutdown state, by reasonable rotating speed control, long-time high-load operation of the rotating separation part is avoided to protect the equipment.

[0054] Specifically, the appropriate value of the preset time needs to consider multiple factors, including the discharge speed of hydrogen, the efficiency of the rotating separation part, the safety requirements of the system, and the actual working conditions of the engine, etc. According to the actual working conditions of the existing engine, the appropriate value of the preset time ranges from 5 minutes to 15 minutes, for example, a preset time of 10 minutes is suitable for most application scenarios, which can balance efficiency and safety to ensure that the hydrogen concentration is reduced to a safe range within a reasonable time.

[0055] Specifically, the first rotation speed refers to the operation of the rotating separation part at a low rotation speed when the hydrogen engine is in a shutdown state, to ensure that high-concentration hydrogen can be effectively discharged during shutdown. Generally, the first rotation speed is set as the minimum effective rotation speed of the rotating separation part, to reduce energy consumption and equipment wear. The first rotation speed range is within 500 RPM to 1500 RPM. The second rotation speed refers to the operation of the rotating separation part at a high rotation speed when the hydrogen engine is not in a shutdown state and the hydrogen concentration is detected to be excessive, to accelerate the discharge of high-concentration hydrogen. The second rotation speed can be the maximum rotation speed of the rotating separation part, to ensure the highest efficiency. The second rotation speed range is within 3000 RPM to 6000 RPM. For example, when the second rotation speed is 3000 RPM, it is suitable for mild hydrogen concentration exceeding, providing higher discharge efficiency. When the second rotation speed is 4500 RPM, it is suitable for moderate hydrogen concentration exceeding, capable of quickly reducing hydrogen concentration. When the second rotation speed is 6000 RPM (maximum rotation speed), it is suitable for severe hydrogen concentration exceeding, maximizing discharge efficiency and rapidly reducing hydrogen concentration. The above rotation speed ranges are derived from existing oil and gas separators. By setting reasonable first and second rotation speed ranges, the oil and gas separation process is optimized, ensuring efficient hydrogen discharge and reducing hydrogen concentration under different working conditions.

[0056] It can be understood that the rotation speed of the rotating separation part is controlled according to the hydrogen concentration value being greater than the set threshold value, wherein the set threshold value is 4%, and when the hydrogen concentration in air is higher than 4%, explosion is likely to occur, especially within the range of 4% to 10%, the risk of explosion is the highest. However, in the actual application of the hydrogen engine, a lower warning threshold than 4% is usually set to take measures in advance. For example, an alarm can be triggered at 2% to 3% and measures to reduce hydrogen concentration can be taken. By setting the set threshold value to 4%, the hydrogen concentration can be effectively monitored and controlled, ensuring that the system can respond in time and take measures when the hydrogen concentration reaches a dangerous level (4%), to prevent safety risks such as explosion and fire.

[0057] Further, the set threshold value can be between 2% and 4%, for example, at low concentration (less than 2%), the oil and gas separator operates normally without special measures; when the concentration is moderate (2% to 4%), the warning system is triggered, the rotation speed of the oil and gas separator is increased, and the hydrogen discharge is accelerated. When the concentration is high (greater than 4%), emergency measures are started, the system operating parameters are immediately adjusted to ensure rapid and effective reduction of hydrogen concentration.

[0058] Further, if the hydrogen engine is in the stop state and the hydrogen concentration value is greater than 4%, the control device 30 maintains the rotating separation part at the first rotating speed (e.g. 500 RPM to 1500 RPM), ensuring that the gas continues to be discharged. After reaching a preset running time (e.g. 5 to 15 minutes), the control device 30 stops the rotating separation part from running, ensuring that the high-concentration hydrogen gas is completely discharged. If the hydrogen engine is not in the stop state and the hydrogen concentration value is greater than 4%, the control device 30 adjusts the rotating separation part to the second rotating speed (e.g. 3000 RPM to 6000 RPM), accelerating the discharge of high-concentration hydrogen gas and preventing the hydrogen concentration from being too high.

[0059] It can be understood that, after adjusting the rotating speed of the rotating separation part to the second rotating speed according to the hydrogen engine not being in the stop state, the control method further comprises re-acquiring the hydrogen concentration value detected by the hydrogen concentration detection device 20, and controlling the rotating speed of the rotating separation part to the first rotating speed according to the hydrogen concentration value being less than the set threshold. When the engine is not in the stop state and the rotating separation part has been running at the second rotating speed for a period of time, the hydrogen concentration value is re-acquired from the hydrogen concentration detection device 20. If the hydrogen concentration value is less than 4%, the control device 30 adjusts the rotating speed of the rotating separation part back to the first rotating speed, maintaining the normal running state of the system. This embodiment dynamically acquires the hydrogen concentration detection value, so that the oil-gas separator 100 can monitor the change in hydrogen concentration in real time and automatically adjust the rotating speed of the rotating separation part according to the concentration value, ensuring that the hydrogen concentration is always within a safe range. When the hydrogen concentration exceeds the standard, the rotating separation part is adjusted to the second rotating speed to quickly discharge the high-concentration hydrogen gas, ensuring the safe running of the system. When the hydrogen concentration decreases to within the safe range, it is automatically restored to the first rotating speed, saving energy and protecting the equipment.

[0060] The hydrogen engine of the present embodiment comprises an air intake system, a combustion chamber and an exhaust system. The air intake system is used to mix hydrogen and air. The combustion chamber is connected to the air intake system and comprises an ignition mechanism for igniting the mixed hydrogen and air. The exhaust system comprises a crankcase and the oil-gas separator 100 described above. The crankcase is connected to the combustion chamber and the air inlet 111 of the oil-gas separator 100, respectively. Specifically, the air intake system comprises an air intake manifold, a hydrogen supply pipe, an air filter and a mixer. The air intake system provides an appropriate amount of hydrogen and air, and sends them into the combustion chamber after being fully mixed. The combustion chamber comprises an ignition mechanism, a piston, a cylinder and a valve. The ignition mechanism is used to ignite the mixed hydrogen and air, and to drive the piston to move and generate power. The exhaust system comprises a crankcase, an exhaust manifold, a catalytic converter and an exhaust pipe. The crankcase is arranged at the bottom of the cylinder and is connected to the combustion chamber and the air inlet 111 of the oil-gas separator 100, respectively. The crankcase collects the oil-gas mixture from the combustion chamber and guides it to the oil-gas separator for separation. The hydrogen sensor and the control device 30 in the oil-gas separator can monitor the hydrogen concentration in real time and automatically adjust the rotating speed of the rotating separation part as needed to ensure that the hydrogen concentration is within a safe range and improve the safety of the system.

[0061] In some embodiments, the hydrogen engine comprises an on-board control unit, and the control device 30 can be electrically connected to the on-board control unit of the hydrogen engine. The control device 30 comprises a signal processing unit and a communication interface, and can receive the detection signal of the hydrogen sensor and be electrically connected to the on-board control unit through the communication interface. The electrical connection is achieved by a cable or a wireless communication module. Through the electrical connection between the control device 30 and the on-board control unit, the hydrogen concentration data detected by the hydrogen sensor can be transmitted to the on-board control unit in real time. Real-time data transmission improves the response speed of the vehicle to changes in hydrogen concentration and ensures that measures can be taken in time when the hydrogen concentration is abnormal.

[0062] In some embodiments, the control device 30 is electrically connected to the on-board control unit, and the hydrogen concentration value can also be reduced by the following operations. First, the on-board control unit can reduce the power output of the engine, reduce the combustion rate, and thus reduce the consumption and emission of hydrogen. Second, increase the air supply to reduce the hydrogen concentration and optimize the combustion efficiency. In addition, in an emergency, open a dedicated exhaust valve to quickly exhaust excess hydrogen and reduce the hydrogen concentration in the system.

[0063] Specifically, the vehicle-mounted control unit has an intelligent control algorithm, which can make predictions and optimize control based on historical data and real-time data. The intelligent control algorithm includes the following steps: setting initial control parameters according to the initial state of the oil-gas separator 100, monitoring key parameters such as hydrogen concentration, engine load, temperature and pressure, calculating the error between the actual hydrogen concentration and the preset safety value, adjusting the control parameters such as the rotating speed of the rotating separation part, the air-fuel ratio and the ignition time in real time according to the error value and the system state, optimizing the control strategy based on historical data and real-time data through a machine learning algorithm, and gradually improving the performance of the oil-gas separator 100. Among them, the machine learning control algorithm uses a data-driven method to train the model using historical data and real-time data to achieve precise control of the system. The steps include collecting data such as hydrogen concentration, engine load, temperature, pressure, data cleaning and preprocessing, extracting key features from the data such as the rate of change of hydrogen concentration and load trend, selecting appropriate machine learning algorithms (such as support vector machines, neural networks, etc.), training the model using historical data, verifying the model performance using a validation dataset, and adjusting and optimizing the parameters. The trained model is deployed in the oil-gas separator 100 to predict the change in hydrogen concentration in real time and adjust the control strategy based on the prediction results.

[0064] The vehicle of the present embodiment also includes a hydrogen engine, a hydrogen storage device, and a power transmission system. The hydrogen storage device is connected to the intake system and provides hydrogen to the intake system. The power transmission system is in driving connection with the hydrogen engine. The hydrogen storage device includes a high-pressure hydrogen tank, a hydrogen regulating valve, and a hydrogen delivery pipeline. The hydrogen storage device stores and supplies hydrogen to the intake system, ensuring hydrogen supply to the engine under different operating conditions. The power transmission system includes a transmission, a drive shaft, and a differential. The power transmission system transmits the power generated by the hydrogen engine to the drive wheels of the vehicle, enabling the vehicle to drive and travel. By using hydrogen as fuel, the hydrogen engine emits mainly water during operation, significantly reducing harmful emissions and improving the environmental performance of the vehicle.

[0065] The above description is only a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed by the present application can be easily thought of by those skilled in the art, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An oil and gas separator characterized by, The oil-gas separator comprises: an oil-gas separator body comprising a separation cavity and a discharge cavity in communication with each other, the separation cavity being provided with an air inlet, the discharge cavity being provided with an air outlet, and a rotating separation part being arranged in the separation cavity; a hydrogen concentration detection device in communication with the discharge cavity; a control device electrically connected with the hydrogen concentration detection device and the rotating separation part, respectively, and configured to control the rotating speed of the rotating separation part according to the hydrogen concentration value measured by the hydrogen concentration detection device; the control method of the oil-gas separator comprises the following steps: obtaining the hydrogen concentration value detected by the hydrogen concentration detection device; controlling the rotating speed of the rotating separation part according to whether the hydrogen concentration value is greater than a set threshold value; wherein the step of controlling the rotating speed of the rotating separation part according to whether the hydrogen concentration value is greater than the set threshold value comprises: judging whether the hydrogen engine is in a shutdown state; if the hydrogen engine is in the shutdown state, maintaining the first rotating speed of the rotating separation part, and stopping the rotating separation part from operating after a preset time is reached; if the hydrogen engine is not in the shutdown state, controlling the rotating speed of the rotating separation part to a second rotating speed, wherein the second rotating speed is greater than the first rotating speed; after the step of adjusting the rotating speed of the rotating separation part to the second rotating speed according to whether the hydrogen engine is not in the shutdown state, the control method further comprises: re-obtaining the hydrogen concentration value of the hydrogen concentration detection device; controlling the rotating speed of the rotating separation part to the first rotating speed according to whether the hydrogen concentration value is less than the set threshold value.

2. The oil and gas separator of claim 1, wherein, The discharge cavity comprises a first chamber and a second chamber in communication with each other, the first chamber is in communication with the hydrogen concentration detection device, and the second chamber is in communication with the separation cavity and is provided with the air outlet.

3. The oil and gas separator of claim 2, wherein, The volume of the second chamber is greater than that of the first chamber.

4. The oil and gas separator of claim 1, wherein, The set threshold value is 4%.

5. A hydrogen engine characterized by The hydrogen engine comprises: an air intake system for mixing hydrogen and air; a combustion chamber in communication with the air intake system, the combustion chamber comprising an ignition mechanism for igniting the mixed hydrogen and air; an exhaust system comprising a crankcase and an oil-gas separator according to any one of claims 1 to 3, the crankcase being in communication with the combustion chamber and the air inlet, respectively.

6. The hydrogen engine of claim 5, wherein The hydrogen engine further comprises an on-board control unit, and the control device is electrically connected with the on-board control unit.

7. A vehicle characterized by comprising: The hydrogen engine comprises: the hydrogen engine according to claim 5 or 6; a hydrogen storage device in communication with the air intake system and configured to provide hydrogen to the air intake system; a power transmission system in driving connection with the hydrogen engine.

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