Internal combustion engine compressed air and electric supercharger ship bubble anti-drag air supply control system

Abstract

The invention relates to the technical field of power energy and ship resistance reduction, and discloses an internal combustion engine compressed air and electric supercharger ship bubble resistance reduction air supply control system which comprises an internal combustion engine set, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger and an electric supercharger, and the internal combustion engine set serves as a power source of the whole system and generates excessive compressed air by delaying the closing moment of an intake valve during conventional operation; the gas-liquid separator is arranged on one side of the internal combustion engine set and used for separating liquid impurities of the compressed air and discharging the liquid impurities regularly; the filter is arranged on the side, away from the internal combustion engine set, of the gas-liquid separator and used for further filtering the compressed air; the first gas storage tank is arranged on the side, away from the gas-liquid separator, of the filter. Compressed air of the internal combustion engine and exhaust gas of the internal combustion engine are used for replacing traditional independent air compression equipment, the effect of reducing the requirement for additional compression equipment is achieved, the problem that a traditional ship bubble drag reduction air supply system is high in energy consumption is solved, the energy utilization efficiency of ship operation is improved, and the overall energy consumption cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power energy and ship drag reduction technology, in particular to a ship air bubble drag reduction gas supply control system of internal combustion engine compressed air and electric supercharger. BACKGROUND

[0002] The traditional air bubble drag reduction gas supply system often relies on independent air compressors to provide compressed air, which usually consumes a large amount of electrical energy or mechanical energy, increasing the overall energy consumption of the ship. The traditional air bubble drag reduction gas supply system often only focuses on the generation of air bubbles to achieve drag reduction, without fully utilizing other available energy sources during ship navigation, such as the compressed air and large exhaust heat energy generated by the internal combustion engine during operation, resulting in energy waste. In addition, the high-temperature and high-pressure exhaust gas discharged by the internal combustion engine has high energy.

[0003] In the existing ship air bubble drag reduction gas supply system, independent air compression equipment is usually relied on to provide compressed air. However, this method has high energy consumption, increasing the fuel consumption and operating cost of the ship, which is not conducive to energy saving and emission reduction.

[0004] At the same time, statistics show that the thermal efficiency of the ship internal combustion engine is about 50%, and the other part of the energy is used to overcome resistance and is consumed through exhaust. This huge amount of heat energy is mostly directly discharged into the atmosphere through the exhaust pipe, without being recycled and utilized, resulting in a great waste of energy and failing to effectively improve the overall energy utilization rate. SUMMARY

[0005] In view of the shortcomings of the prior art, the present application provides a ship air bubble drag reduction gas supply control system of internal combustion engine compressed air and electric supercharger, which solves the problems of high energy consumption, high dependence on independent compression equipment, and ineffective utilization of internal combustion engine exhaust energy of the traditional ship air bubble drag reduction gas supply system.

[0006] To achieve the above purpose, the present application realizes the following technical scheme: a ship air bubble drag reduction gas supply control system of internal combustion engine compressed air and electric supercharger, comprising: An internal combustion engine group serves as the power source of the entire system, and generates excess compressed air by delaying the closing time of the intake valve during normal operation; A gas-liquid separator is arranged on one side of the internal combustion engine group, which separates the liquid impurities in the compressed air and discharges them periodically; A filter is arranged on the side of the gas-liquid separator away from the internal combustion engine group, which further filters the compressed air; A gas storage tank one is arranged on the side of the filter away from the gas-liquid separator, which stores the filtered compressed air; A heat exchanger is arranged on the side of the gas storage tank one away from the filter, which pressurizes the exhaust gas while reducing the exhaust back pressure of the internal combustion engine; The bubble generating device is arranged on the side of the heat exchanger away from the gas storage tank, and is used for receiving compressed air and processing waste gas to provide a gas source for the bubble drag reduction system. The regulating assembly is arranged between the first gas storage tank and the heat exchanger, and is used for detecting and regulating the gas pressure in the first gas storage tank. The pressurizing assembly is arranged between the heat exchanger and the bubble generating device, and is used for providing pressurized gas for the bubble drag reduction system. The internal combustion engine assembly comprises an internal combustion engine shell, a connecting rod arranged at the bottom of the internal combustion engine shell, a piston installed in the internal combustion engine shell, and a transmission assembly arranged at the right side of the top wall of the internal combustion engine shell.

[0007] Preferably, the exhaust assembly comprises an exhaust valve arranged at the left side of the top wall of the internal combustion engine shell, and an exhaust passage fixed to the side of the exhaust valve away from the internal combustion engine shell. The intake assembly comprises an intake valve arranged at the middle of the top wall of the internal combustion engine shell, and an intake passage arranged at the side of the intake valve away from the internal combustion engine shell. The transmission assembly comprises a gas transmission valve arranged at the right side of the top wall of the internal combustion engine shell, and a gas transmission pipeline fixed to the side of the gas transmission valve away from the internal combustion engine shell.

[0008] Preferably, a valve one is arranged in the middle of the gas transmission pipeline.

[0009] Preferably, the regulating assembly comprises a pressure regulating device and a mass flow controller, and the pressure regulating device and the mass flow controller are arranged on the connecting pipeline between the first gas storage tank and the heat exchanger.

[0010] Preferably, the pressurizing assembly comprises a second gas storage tank, the second gas storage tank is connected to one end of the heat exchanger through an air pipeline, and an electric supercharger is arranged in the air pipeline between the second gas storage tank and the heat exchanger.

[0011] Preferably, the other end of the heat exchanger is connected to the exhaust passage, and a valve two is arranged in the middle of the exhaust passage.

[0012] Preferably, the right side of the heat exchanger is connected to the bubble generating device through an air pipeline, and a valve three is arranged between the heat exchanger and the bubble generating device to regulate the gas flow.

[0013] Preferably, one side of the second gas storage tank is connected to the side of the bubble generating device through an air pipeline, and a valve four is arranged between the second gas storage tank and the bubble generating device to regulate the gas flow.

[0014] Preferably, the gas storage tank one and the pressure regulating device are provided with a gas storage valve, and the gas storage tank one is provided with a gas pressure sensor.

[0015] Preferably, polyester fiber is selected as the filter material inside the filter for filtering solid particles.

[0016] The application provides a ship air bubble drag reduction air supply control system with an internal combustion engine compressed air and an electric supercharger. 1. The application uses the compressed air of the internal combustion engine and its exhaust gas to replace the traditional independent air compression equipment, reduces the demand for additional compression equipment, solves the problem of high energy consumption of the traditional ship air bubble drag reduction air supply system, improves the energy utilization efficiency of ship operation, and reduces the overall energy consumption cost.

[0017] 2. The application recovers the energy of the exhaust gas of the internal combustion engine, and uses the gas heat exchange supercharging technology to convert part of the energy of the exhaust gas into mechanical energy, improves the energy recovery and reuse effect, solves the problem of energy waste caused by direct exhaust of the exhaust gas, and improves the overall energy utilization rate and fuel economy of the system. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The system distribution plan of the application.

[0019] 1, internal combustion engine shell; 2, gas-liquid separator; 3, filter; 4, gas storage tank one; 5, pressure regulating device; 6, mass flow controller; 7, heat exchanger; 8, electric supercharger; 9, gas storage tank two; 10, bubble generating device; 11, connecting rod; 12, piston; 13, exhaust valve; 14, exhaust passage; 15, intake valve; 16, intake passage; 17, gas delivery valve; 18, gas delivery pipeline; 19, valve one; 20, valve two; 21, valve three; 22, valve four. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the application will be described below with reference to the drawings in the specification of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0021] Please refer to the drawings in the specification of the application Figure 1 The embodiment of the application provides a ship air bubble drag reduction air supply control system with an internal combustion engine compressed air and an electric supercharger, which comprises: The internal combustion engine group serves as the power source of the whole system, and generates excess compressed air by delaying the closing time of the intake valve during normal operation; A gas-liquid separator 2 is arranged on the side of the internal combustion engine unit, for separating and periodically discharging the liquid impurities of the compressed air; A filter 3 is arranged on the side of the gas-liquid separator 2 away from the internal combustion engine unit, for further filtering the compressed air; A first air storage tank 4 is arranged on the side of the filter 3 away from the gas-liquid separator 2, for storing the filtered compressed air; A heat exchanger 7 is arranged on the side of the first air storage tank 4 away from the filter 3, for pressurizing the exhaust gas while reducing the exhaust back pressure of the internal combustion engine; A bubble generating device 10 is arranged on the side of the heat exchanger 7 away from the first air storage tank 4, for receiving the compressed air and the treated exhaust gas to provide the gas source for the bubble drag reduction system; A control assembly is arranged between the first air storage tank 4 and the heat exchanger 7, for detecting and controlling the air pressure in the first air storage tank 4; A pressurizing assembly is arranged between the heat exchanger 7 and the bubble generating device 10, for providing the pressurized gas for the bubble drag reduction system; The internal combustion engine unit comprises an internal combustion engine shell 1, which is arranged on the side of the gas-liquid separator 2 away from the filter 3, and is provided with a connecting rod 11 at the bottom, and is internally installed with a piston 12, and the connecting rod 11 drives the piston 12 to reciprocate through a cylinder drive, and is provided with an exhaust assembly on the left side of the top wall, and is provided with an air intake assembly in the middle of the top wall, and is provided with a transmission assembly on the right side of the top wall.

[0022] Preferably, the exhaust assembly comprises an exhaust valve 13 arranged on the left side of the top wall of the internal combustion engine shell 1, and the exhaust valve 13 is fixed with an exhaust passage 14 on the side away from the internal combustion engine shell 1; The air intake assembly comprises an air intake valve 15 installed on the middle of the top wall of the internal combustion engine shell 1, and the air intake valve 15 is provided with an air intake passage 16 on the side away from the internal combustion engine shell 1; The transmission assembly comprises a gas delivery valve 17 installed on the right side of the top wall of the internal combustion engine shell 1, and the gas delivery valve 17 is fixed with a gas delivery pipeline 18 on the side away from the internal combustion engine shell 1; The gas delivery pipeline 18 is provided with a valve 19 in the middle; The control assembly comprises a pressure regulating device 5 and a mass flow controller 6, both of which are arranged on the connecting pipeline between the first air storage tank 4 and the heat exchanger 7; The pressurizing assembly comprises a second air storage tank 9 connected with one end of the heat exchanger 7 through an air passage, and the air passage between the second air storage tank 9 and the heat exchanger 7 is provided with an electric supercharger 8; Polyester fiber is selected as the filter material inside the filter 3, for filtering solid particles; The other end of the heat exchanger 7 is connected with the exhaust passage 14, and the valve 2 is arranged in the middle of the exhaust passage 14; The right side of the heat exchanger 7 is connected with the bubble generating device 10 through the air pipe, and the valve 3 is arranged between the heat exchanger 7 and the bubble generating device 10 to control the gas flow; The side of the gas tank 2 is connected with the side of the bubble generating device 10 through the air pipe, and the valve 4 is arranged between the gas tank 2 and the bubble generating device 10 to control the gas flow; The gas tank 1 is provided with a gas storage valve between the gas tank 1 and the pressure regulating device 5, and the gas pressure sensor is arranged in the gas tank 1.

[0023] Specifically, the temperature sensor and the pressure sensor for monitoring the working state in the cylinder are arranged on the cylinder cover of the internal combustion engine shell 1, the pipeline air pipe 18 for conveying the compressed gas is tightly connected with the compressed air outlet of the ship internal combustion engine, so that the excess compressed air generated during the operation of the internal combustion engine can be efficiently collected, the other end of the pipeline air pipe 18 is arranged on the gas-liquid separator 2, so that the compressed air can be completely conveyed to the gas-liquid separator 2 and filtered to remove the liquid impurities, the filtered liquid impurities can be periodically discharged through the opening at the bottom of the gas-liquid separator 2, the compressed air after the preliminary removal of the impurities through the gas-liquid separator 2 is conveyed to the filter 3 again, filtered through the filter material made of polyester fiber in the filter 3, and finally the compressed air after the second purification is stored in the gas tank 1, the compressed air in the gas tank 1 is controlled by the pressure regulating device 5 and the mass flow controller 6 to enter the heat exchanger 7, at the same time, the exhaust gas generated during the combustion operation of the internal combustion engine shell 1 is discharged through the exhaust passage 14 by the valve 2 and synchronously enters the heat exchanger 7, and because the exhaust gas is generated by combustion, the exhaust gas is mixed with heat during the transmission, so that the temperature of the compressed air is increased, and finally the compressed air is heated and pressurized to be conveyed to the position of the bubble generating device 10 for use of the bubble drag reduction system, and the exhaust gas is conveyed to the position of the electric supercharger 8 for supercharging, after the pressure reaches the requirement, the temperature is also decreased due to the heat exchange reaction, and reaches a suitable temperature, after the exhaust gas pressure and temperature reach the target requirements, the exhaust gas is conveyed to the position of the gas tank 2 for standby, the opening and closing of the valve 3 and the valve 4 can control whether the compressed air or the compressed gas after the exhaust gas is used, and the air inlet valve 15 can control whether the gas can enter the internal combustion engine shell 1 through the air inlet passage 16, and the air outlet valve 17 can control whether the compressed gas in the internal combustion engine shell 1 can be normally conveyed out through the pipeline air pipe 18.

[0024] Working principle: when the internal combustion engine is running normally, air enters the cylinder inside the internal combustion engine shell 1 through the air inlet 16 and the air inlet valve 15, at this time the exhaust valve 13 and the air transfer valve 17 are closed, so that the connecting rod 11 can drive the piston 12 to run upwards, compressing the air. Because the air inlet valve 15 is extended to open for a longer time, the temperature and pressure sensors on the cylinder head monitor the gas pressure, and when the gas pressure reaches a certain level, the air transfer valve 17 and valve 1 9 are opened, and the excess compressed air enters the gas-liquid separator 2, at this time the air inlet valve 15 is closed. At the same time, combustion occurs in the cylinder inside the internal combustion engine shell 1, and the exhaust gas produced by the combustion is discharged from the cylinder through the exhaust valve 13 and the exhaust passage 14, completing the normal combustion process. At the same time, compressed air enters the gas-liquid separator 2 through the air transfer valve 17 and the air transfer pipeline 18, and the gas-liquid separator 2 separates the liquid impurities such as oil and condensed water contained in the collected compressed air, and the liquid impurities are collected in the liquid tank at the bottom of the separator and can be discharged periodically. After the compressed air is removed from the liquid impurities by the gas-liquid separator 2, it enters the filter 3, and the filter screen of the filter 3 uses polyester fiber as the filter material to effectively intercept the solid particle impurities remaining in the compressed air, ensuring the purity of the compressed air and avoiding wear or blockage of the subsequent equipment. The pure compressed air is stored in the air storage tank 1 4, and the compressed air in the air storage tank 1 4 enters the heat exchanger 7 after passing through the pressure regulating device 5 and the mass flow controller 6. The exhaust gas produced by the combustion of the internal combustion engine enters the heat exchanger 7 through the exhaust valve 13, the exhaust passage 14 and valve 2 0, and the other end of the pipe is connected to the electric supercharger 8. The heat energy of the exhaust gas in the heat exchanger 7 pipe heats and pressurizes the compressed air entering the heat exchanger 7 through the mass flow controller 6, and then the compressed air enters the bubble generating device 10 for use by the bubble drag reduction system. The exhaust gas discharged from the internal combustion engine is pressurized by the electric supercharger 8, and the pressure is increased to the pressure required by the bubble drag reduction system, and the temperature is reduced by heat exchange, and the temperature and pressure of the compressed gas in the air storage tank 2 9 are suitable for the bubble drag reduction system, and the compressed gas enters the air storage tank 2 9 for use by the bubble drag reduction system. The temperature and pressure of the compressed gas in the air storage tank 2 9 are suitable for the bubble drag reduction system, and the compressed gas enters the air storage tank 2 9 for use by the bubble drag reduction system. The temperature and pressure of the compressed gas in the air storage tank 2 9 are suitable for the bubble drag reduction system, and the compressed gas enters the air storage tank 2 9 for use by the bubble drag reduction system.

[0025] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An internal combustion engine compressed air and electric supercharger marine bubbler drag reduction gas supply control system, characterized by, The utility model relates to an air bubble drag reduction system, which comprises: an internal combustion engine group as a power source of the whole system, which produces excess compressed air by delaying the closing time of the intake valve during normal operation; a gas-liquid separator (2) arranged on one side of the internal combustion engine group for separating and regularly discharging liquid impurities in the compressed air; a filter (3) arranged on the side of the gas-liquid separator (2) away from the internal combustion engine group for further filtering the compressed air; a first air tank (4) arranged on the side of the filter (3) away from the gas-liquid separator (2) for storing the filtered compressed air; a heat exchanger (7) arranged on the side of the first air tank (4) away from the filter (3) for pressurizing the exhaust gas while reducing the exhaust back pressure of the internal combustion engine; a bubble generating device (10) arranged on the side of the heat exchanger (7) away from the first air tank (4) for receiving the compressed air and the treated exhaust gas to provide gas source for the air bubble drag reduction system; a control assembly arranged between the first air tank (4) and the heat exchanger (7) for detecting and controlling the air pressure in the first air tank (4); a pressurizing assembly arranged between the heat exchanger (7) and the bubble generating device (10) for providing pressurized gas for the air bubble drag reduction system. The internal combustion engine group comprises an internal combustion engine shell (1) arranged on the side of the gas-liquid separator (2) away from the filter (3), a connecting rod (11) arranged at the bottom of the internal combustion engine shell (1), a piston (12) installed in the internal combustion engine shell (1), the connecting rod (11) driving the piston (12) to reciprocate through a cylinder drive, an exhaust assembly installed on the left side of the top wall of the internal combustion engine shell (1), an air intake assembly installed in the middle of the top wall of the internal combustion engine shell (1), and a transmission assembly arranged on the right side of the top wall of the internal combustion engine shell (1).

2. A compressed air and electric supercharger marine vessel bubble drag reduction air supply control system according to claim 1, wherein, The exhaust assembly comprises an exhaust valve (13) arranged on the left side of the top wall of the internal combustion engine shell (1), and an exhaust passage (14) fixed to the side of the exhaust valve (13) away from the internal combustion engine shell (1). The air intake assembly comprises an air intake valve (15) installed in the middle of the top wall of the internal combustion engine shell (1), and an air intake passage (16) arranged on the side of the air intake valve (15) away from the internal combustion engine shell (1). The transmission assembly comprises a gas delivery valve (17) installed on the right side of the top wall of the internal combustion engine shell (1), and a gas delivery pipeline (18) fixed to the side of the gas delivery valve (17) away from the internal combustion engine shell (1).

3. A compressed air and electric supercharger marine vessel bubble drag reduction air supply control system of claim 2, wherein, A valve one (19) is arranged in the middle of the gas delivery pipeline (18).

4. A compressed air and electric supercharger marine vessel bubble drag reduction air supply control system according to claim 1, wherein, The control assembly comprises a pressure regulating device (5) and a mass flow controller (6), both of which are arranged on the connecting pipeline between the first air tank (4) and the heat exchanger (7).

5. A compressed air and electric supercharger marine vessel bubble drag reduction air supply control system according to claim 1, wherein, The pressurizing assembly comprises a second air tank (9) connected to one end of the heat exchanger (7) through an air pipeline, and an electric supercharger (8) arranged in the air pipeline between the second air tank (9) and the heat exchanger (7).

6. A compressed air and electric supercharger marine vessel bubble drag reduction air supply control system according to claim 1, wherein, The other end of the heat exchanger (7) is connected to the exhaust passage (14), and a valve two (20) is arranged in the middle of the exhaust passage (14).

7. A compressed air and electric supercharger marine vessel bubble drag reduction air supply control system according to claim 1, wherein, The heat exchanger (7) is connected with the bubble generating device (10) through the air pipe on the right side, and a valve three (21) is arranged between the heat exchanger (7) and the bubble generating device (10) to control the gas flow.

8. A compressed air and electric supercharger marine vessel bubble drag reduction air supply control system according to claim 5, wherein, The gas tank two (9) is connected with the bubble generating device (10) through the air pipe on one side, and a valve four (22) is arranged between the gas tank two (9) and the bubble generating device (10) to control the gas flow.

9. A compressed air and electric supercharger marine vessel bubble drag reduction air supply control system according to claim 1, wherein, The gas tank one (4) is provided with a gas storage valve between the pressure regulating device (5), and a gas pressure sensor is arranged in the gas tank one (4).

10. A compressed air and electric supercharger marine vessel bubble drag reduction air supply control system according to claim 1, wherein, Polyester fiber is selected as the filter material in the filter (3) for filtering solid particles.

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