Hybrid ship propulsion system

Abstract

The invention discloses a hybrid power ship propulsion system which comprises an oil control loop and an electric control loop, a power source of the oil control loop is a diesel engine set, the diesel engine set is connected with a gearbox set through a clutch and a propulsion motor set, a power source of the electric control loop is a power generator, and the power generator is connected with a propulsion controller set. The propulsion controller unit is connected with a propulsion motor unit, the propulsion motor unit is connected with gear box sets, the gear box sets are all connected with propulsion devices, the power control unit is connected with a disengagement and engagement controller, and the disengagement and engagement controller controls engagement or disengagement of a clutch. According to the invention, the connection between the propulsion motor set and the diesel engine set is controlled through the engagement or disengagement of the clutch, and the switching between diesel propulsion and electric propulsion is realized, so that the electric propulsion can be used for providing power during low-speed sailing, and the condition of insufficient combustion of the diesel engine at low-speed sailing speed is avoided.

Description

Technical Field

[0001] The present invention relates to the field of ship power technology, in particular to a hybrid power ship propulsion system. Background Art

[0002] Marine diesel engines have high thermal efficiency, good economy, easy starting, and great adaptability to various types of ships. Marine diesel engines are generally divided into high-speed, medium-speed and low-speed diesel engines. Medium- and high-speed diesel engines drive propellers through gear reduction boxes. When low-speed navigation is required, the speed of the diesel engine is generally reduced, so that the diesel engine is idling. This driving mode will reduce the combustion efficiency of the diesel engine and produce carbon dioxide and particulate matter emissions. Long-term low-speed operation will cause carbon deposits on the diesel engine, affecting the combustion efficiency of the diesel engine during normal operation. At the same time, it does not meet the development requirements of green zero-carbon emissions. Therefore, a hybrid ship propulsion system is designed. The generator is used as power to drive the propulsion motor to operate the gearbox, so that the ship can use the generator as power when sailing at low speed, reducing the occurrence of insufficient combustion of the diesel engine. Summary of the invention

[0003] The object of the present invention is to provide a hybrid power ship propulsion system, which controls the connection between the diesel engine group and the propulsion motor group by engaging or disengaging the clutch, and then uses the propulsion motor group to transmit torque to the gear, so that the power of the ship can be switched between electric propulsion and diesel propulsion, so that the generator can drive the operation of the gearbox when sailing at low speed, avoiding incomplete combustion of the diesel engine when sailing at low speed, and improving energy utilization.

[0004] The present invention provides the following technical solution: a hybrid ship propulsion system, comprising an oil control circuit and an electric control circuit, wherein the power source of the electric control circuit is a generator, the generator is connected to a propulsion controller unit, the generator distributes power to the propulsion controller unit through a power monitoring unit, the propulsion controller unit is connected to a propulsion motor unit, and the propulsion motor unit is connected to a gearbox unit; The power source of the oil control circuit is a diesel engine set, which is connected to the propulsion motor set through a clutch, and then connected to the gearbox set through the propulsion motor set. The diesel engine set and the propulsion motor set are connected on the same shaft through a clutch; The gearbox groups are all connected with a propulsion device; It also includes a power control board and a power control unit. The power control board transmits signals to the power control unit. The power control unit is connected to a disengagement controller. The disengagement controller controls the engagement or disengagement of the clutch and controls the connection between the propulsion motor group and the diesel engine group.

[0005] Furthermore, the gear box group is also connected to a gear box auxiliary pump, and the gear box group runs stably through the gear box auxiliary pump.

[0006] Furthermore, the power monitoring unit is also connected to an inverter, to which a backup pump, domestic electricity, a voltage-stabilized power supply and a charger are connected in parallel, the charger is connected to a battery, and the voltage-stabilized power supply is connected to a power supply device. The inverter is used to convert the direct current generated by the generator into alternating current, and the alternating current is used to provide power for the equipment and domestic electricity.

[0007] Furthermore, it also includes a main driver and a co-driver, the power control board includes a power control main board and a power control sub-board, the power control unit includes a left power control unit and a right power control unit, the left power control unit is connected to the main driver and the co-driver at the same time, and the right power control unit is also connected to the main driver and the co-driver at the same time, so that both the main driver and the co-driver can control the operation of the power control unit, realize the switching of the diesel engine and the generator, and make power switching more convenient.

[0008] Furthermore, the propulsion controller unit includes a left propulsion controller and a right propulsion controller, the propulsion motor unit includes a left propulsion motor and a right propulsion motor, the left propulsion controller is connected to the left machine of the power control unit, the right propulsion controller is connected to the right machine of the power control unit, the left propulsion controller is connected to the left propulsion motor, the right propulsion controller is connected to the right propulsion motor, the left propulsion motor is connected to the left gear box, and the right propulsion motor is connected to the right gear box.

[0009] Furthermore, the left propulsion motor is connected to a propulsion system cooling water pump, and the right propulsion motor is connected to another propulsion system cooling water pump, and the left propulsion motor and the right propulsion motor are cooled by the propulsion system cooling water pump.

[0010] Furthermore, the diesel engine group includes a left diesel engine and a right diesel engine, the left power control unit is connected to the left diesel engine, the right power control unit is connected to the right diesel engine, the left power control unit and the right power control unit are both connected to a disengagement row controller, the gearbox group includes a left gearbox and a right gearbox, the left diesel engine is connected to the left gearbox through a clutch, and the right diesel engine is connected to the right gearbox through another clutch.

[0011] Furthermore, it also includes a propulsion device control cabinet, the propulsion devices on both sides are connected to the propulsion device control cabinet, the propulsion device control cabinet is connected to the left machine of the power control unit, and the left machine of the power control unit is connected to a power display and control terminal, so that the rotation speed and other data of the propulsion devices on both sides are displayed on the power display and control terminal, and the power display and control terminal can also control the rotation of the propulsion devices on both sides.

[0012] The power display and control terminal includes a main end and a secondary end, and the main end and the secondary end are respectively located in the main driver's seat and the secondary driver's seat.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: by connecting the propulsion motor group with the gearbox group, the generator can drive the gearbox group to operate, providing power for the rotation of the propulsion device, and at the same time, by engaging or disengaging the clutch, the diesel engine group is controlled to be connected to the propulsion motor group, and the propulsion motor group is always connected to the gearbox group, so that the diesel engine group can transmit torque to the gearbox group through the engagement or disengagement of the clutch, so that the ship can have an electric propulsion control mode, a diesel propulsion control mode, a diesel propulsion-to-electric propulsion mode, and an electric propulsion-to-diesel propulsion mode, so that the power of the ship can be switched between electric propulsion and diesel propulsion, so that the generator can drive the operation of the gearbox when sailing at low speed, avoiding incomplete combustion of the diesel engine when sailing at low speed, and improving energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the ship structure of the present invention; Figure 2 is a schematic diagram of the electric propulsion control mode of the present invention; Figure 3 is a schematic diagram of the diesel push control mode of the present invention; Figure 4 It is a schematic diagram of the diesel-push-to-electric-push mode of the present invention; Figure 5 It is a schematic diagram of the electric push mode of cutting firewood of the present invention; In the figure: 1. Power control panel; 2. Power control unit left machine; 3. Power control unit right machine; 5. Left diesel engine; 6. Right diesel engine; 7. Clutch; 8. Left propulsion motor; 9. Left propulsion controller; 10. Right propulsion motor; 11. Right propulsion controller; 12. Left gear box; 13. Right gear box; 14. Propulsion device; 16. Disengagement and engagement controller; 17. Propulsion device control cabinet; 18. Gear box auxiliary pump; 19. Propulsion system cooling water pump; 20. Generator; 21. Power monitoring unit; 22. Power display and control terminal. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1The present invention provides a technical solution: a hybrid ship propulsion system, including an oil control circuit and an electric control circuit, the power source of the electric control circuit is a generator 20, the generator 20 is connected to a propulsion controller unit, the generator 20 distributes power to the propulsion controller unit through a power monitoring unit 21, the propulsion controller unit is connected to a propulsion motor unit, the propulsion motor unit is connected to a gear box unit, and the gear box units are all connected to a propulsion device 14, the gear box unit is driven to rotate by the operation of the propulsion motor unit, the power is transmitted to the propulsion device 14, the propulsion device 14 is rotated by electricity, and the movement of the ship is provided with power; The power source of the oil control circuit is a diesel engine set, which is connected to the propulsion motor set through a clutch 7, and then connected to the gearbox set through the propulsion motor set. After the diesel engine set and the propulsion motor set are combined, the output shaft is the same, and the diesel engine set is used to transmit power, and the torque is sequentially transmitted to the propulsion motor set and the gearbox set through the combined clutch 7. The gearbox set is connected to a propulsion device 14, so that the propulsion device 14 rotates to provide power for the movement of the ship; It also includes a power control board 1 and a power control unit. The power control board 1 transmits signals to the power control unit. The power control unit is connected to a disengagement controller 16. The disengagement controller 16 controls the engagement or disengagement of the clutch 7 and controls the connection between the gear box group and the diesel engine group. Through the operation of the power control board 1 by the personnel in the cockpit, the disengagement controller 16 is operated to control the engagement or disengagement of the clutch 7. When the clutch 7 is engaged, the torque generated by the diesel engine group can be transmitted to the gear box group, making the diesel engine group a power source. At this time, the propulsion motor group is in a shutdown state. When the ship is sailing at a low speed, the clutch 7 is disengaged so that the diesel engine group cannot transmit torque to the gear box group. At this time, the propulsion motor group needs to be started, and the propulsion motor group is used to provide power to the gear box group, so that the gear box group runs and provides power to the propulsion device 14, further driving the ship to move, and avoiding the situation of insufficient combustion of the diesel engine caused by low-speed sailing.

[0017] The gear box assembly is also connected to a gear box auxiliary pump 18, which is used to ensure the stable operation of the gear box.

[0018] The power monitoring unit 21 is also connected to an inverter, which is used to convert direct current into alternating current. The inverter is connected in parallel with a backup pump, domestic electricity, a voltage-stabilized power supply and a charger. The inverter provides alternating current for domestic electricity, a backup pump and a voltage-stabilized power supply on the ship. The charger is connected to a battery, and the battery is charged by the charger with the alternating current generated by the inverter to realize power storage. The voltage-stabilized power supply is connected to a power supply device.

[0019] It also includes a main driver and a co-driver, the power control board 1 includes a power control main board and a power control sub-board, the power control unit includes a power control unit left machine 2 and a power control unit right machine 3, the power control unit is used to control the disengagement or engagement of the clutch 7, so that the power source of the ship is switched between the generator or the diesel engine, the power control unit left machine 2 is connected to the main driver and the co-driver at the same time, the power control unit right machine 3 is also connected to the main driver and the co-driver at the same time, so that the main driver and the co-driver can control the power control unit left machine 2 and the power control unit right machine 3 at the same time, the power control unit left machine 2 can control the propulsion device 14 on the left side of the ship to switch power, the power control unit right machine 3 controls the propulsion device 14 on the right side of the ship to switch power, so that the main driver and the co-driver can switch the power of the propulsion device 14 on both sides, making the power switching operation of the ship more convenient.

[0020] The propulsion controller unit includes a left propulsion controller 9 and a right propulsion controller 11, and the propulsion motor unit includes a left propulsion motor 8 and a right propulsion motor 10. The left propulsion controller 9 is connected to the left machine 2 of the power control unit, and the right propulsion controller 11 is connected to the right machine 3 of the power control unit. The left propulsion controller 9 is connected to the left propulsion motor 8, and the right propulsion controller 11 is connected to the right propulsion motor 10. The left propulsion motor 8 is connected to the left gear box 12, and the right propulsion motor 10 is connected to the right gear box 13. The left machine 2 of the power control unit controls the start of the left propulsion motor 8 through the left propulsion controller 9, and then uses the left propulsion motor 8 to control the rotation of the left gear box 12, thereby driving the propulsion device 14 on the left side to rotate. The right machine 3 of the power control unit controls the start of the right propulsion motor 10 through the right propulsion controller 11, and then uses the right propulsion motor 10 to control the rotation of the right gear box 13, thereby driving the propulsion device 14 on the right side to rotate.

[0021] The left propulsion motor 8 is connected to a propulsion system cooling water pump 19, and the right propulsion motor 10 is connected to another propulsion system cooling water pump 19. The two propulsion system cooling water pumps 19 are used to cool the left propulsion motor 8 and the right propulsion motor 10 respectively.

[0022] The diesel engine group includes a left diesel engine 5 and a right diesel engine 6. The left engine 2 of the power control unit is connected to the left diesel engine 5, and the left engine 2 of the power control unit can start the left diesel engine 5. The right engine 3 of the power control unit is connected to the right diesel engine 6, and the right engine 3 of the power control unit can start the right diesel engine 6. Two disengagement controllers 16 are respectively connected to the left engine 2 of the power control unit and the right engine 3 of the power control unit. The gearbox group includes a left gearbox 12 and a right gearbox 13. The left diesel engine 5 is connected to the left gearbox 12 through a clutch 7 and a left propulsion motor 8, and the right diesel engine 6 is connected to the right gearbox 13 through another clutch 7 and a right propulsion motor 10. The left diesel engine 5 is started by the left engine 2 of the power control unit first, and then the clutch 7 is controlled to be engaged, so that the left diesel engine 5 provides power to the ship. The right engine 3 of the power control unit also starts the right diesel engine 6 first, and then controls the clutch to be engaged, so that the right diesel engine 6 controls the rotation of the propulsion device 14 on the other side to provide power to the ship.

[0023] It also includes a propulsion device control cabinet 17. The propulsion devices 14 on both sides are connected to the propulsion device control cabinet 17. The propulsion device control cabinet 17 is connected to the left machine 2 of the power control unit. The left machine 2 of the power control unit is connected to a power display and control terminal 22. The right machine 3 of the power control unit is also connected to the power display and control terminal 22. The propulsion device control cabinet 17 collects data on the rotation speed and current of the propulsion devices 14 on both sides, transmits the information of the propulsion devices 14 to the left machine 2 of the power control unit, and then transmits the information to the power display and control terminal 22 through the left machine 2 of the power control unit. The data of the propulsion devices 14 on the left and right sides of the ship are displayed to facilitate the control of the power of the ship.

[0024] The power display and control terminal 22 includes a main terminal and a secondary terminal, and the main terminal and the secondary terminal are respectively located in the main and secondary ports, so that both the main and secondary ports can see the power data of the ship.

[0025] The propulsion system includes four operating modes: electric propulsion control mode, diesel propulsion control mode, diesel propulsion-to-electric propulsion mode, and electric propulsion-to-diesel propulsion mode. The four modes are all based on the left propulsion device as an example. Since the operation of the left propulsion device is the same as that of the right propulsion device, the operation mode of the right propulsion device will not be described. like Figure 2 As shown, the electric propulsion control mode is as follows: long press the "electric propulsion" button on the left engine of the power control unit for 2 seconds, the control handle is in N gear, then operate the disengagement controller to put the clutch in the disengagement state, then start the left propulsion motor, control the speed of the left propulsion motor, control the rotation of the gear box, make the left propulsion device rotate, and use electricity as the driving force to provide power to the ship's propulsion device; like Figure 3As shown, the diesel propulsion control mode is as follows: long press the "left engine" button on the left engine of the power control unit for 2 seconds, the control handle is in N gear, then start the left diesel engine, and engage the clutch, so that the left diesel engine controls the rotation of the left propulsion motor, further drives the operation of the gearbox, further controls the rotation of the propulsion device, and the left diesel engine provides power for the rotation of the propulsion device; like Figure 4 As shown, the diesel-to-electric propulsion mode: first, idle the diesel engine, then press and hold the "diesel-to-electricity" button for 2 seconds, the operating handle is in the "N / D / R gear", then the generator enters the high-power state, and then the left propulsion motor is started, so that the speed of the left propulsion motor and the left diesel engine are the same, and then the clutch is disengaged, and only the left propulsion motor provides power to the left gearbox, and the left diesel engine is stopped at the same time. Finally, the operating handle controls the speed of the left propulsion motor to complete the switch of the diesel-to-electricity mode; like Figure 5 As shown, electric push mode: first switch the generator to high power mode, press and hold the "electric push mode" button for 2 seconds, start the left diesel engine, control the clutch engagement through the disengagement controller, so that the left diesel engine can be connected to the left propulsion motor, and the diesel engine provides power for the rotation of the left gearbox through the diesel engine. After running smoothly, stop the left propulsion motor, control the speed of the left diesel engine with the operating handle, so that the speed of the left diesel engine is in normal operation, and finally switch the generator back to low power mode.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hybrid ship propulsion system, comprising an oil control circuit and an electric control circuit, characterized in that: The power source of the electric control circuit is a generator, the generator is connected to a propulsion controller unit, the generator distributes power to the propulsion controller unit through a power monitoring unit, the propulsion controller unit is connected to a propulsion motor unit, and the propulsion motor unit is connected to a gearbox unit; The power source of the oil control circuit is a diesel engine set, which is connected to the propulsion motor set through a clutch, and then connected to the gearbox set through the propulsion motor set. The diesel engine set and the propulsion motor are connected on the same shaft through a clutch. The gearbox groups are all connected with a propulsion device; It also includes a power control board and a power control unit. The power control board transmits signals to the power control unit. The power control unit is connected to a disengagement controller. The disengagement controller controls the engagement or disengagement of the clutch and controls the connection between the propulsion motor group and the diesel engine group.

2. The hybrid ship propulsion system according to claim 1, characterized in that: The gear box assembly is also connected to a gear box auxiliary pump.

3. The hybrid ship propulsion system according to claim 1, characterized in that: The power monitoring unit is also connected to an inverter, to which a backup pump, domestic electricity, a voltage-stabilized power supply and a charger are connected in parallel, a battery is connected to the charger, and a power supply device is connected to the voltage-stabilized power supply.

4. The hybrid ship propulsion system according to claim 1, characterized in that: It also includes a main driver and a co-driver, the power control board includes a power control main board and a power control sub-board, the power control unit includes a left power control unit and a right power control unit, the left power control unit is connected to the main driver and the co-driver at the same time, and the right power control unit is also connected to the main driver and the co-driver at the same time.

5. The hybrid ship propulsion system according to claim 4, characterized in that: The propulsion controller unit includes a left propulsion controller and a right propulsion controller, and the propulsion motor unit includes a left propulsion motor and a right propulsion motor. The left propulsion controller is connected to the left machine of the power control unit, and the right propulsion controller is connected to the right machine of the power control unit. The left propulsion controller is connected to the left propulsion motor, and the right propulsion controller is connected to the right propulsion motor. The left propulsion motor is connected to the left gear box, and the right propulsion motor is connected to the right gear box.

6. The hybrid ship propulsion system according to claim 5, characterized in that: The left propulsion motor is connected to a propulsion system cooling water pump, and the right propulsion motor is connected to another propulsion system cooling water pump.

7. The hybrid ship propulsion system according to claim 5, characterized in that: The diesel engine group includes a left diesel engine and a right diesel engine. The left power control unit is connected to the left diesel engine, and the right power control unit is connected to the right diesel engine. Both the left power control unit and the right power control unit are connected to a disengagement row controller. The gearbox group includes a left gearbox and a right gearbox. The left diesel engine is connected to the left gearbox through a clutch and a left propulsion motor, and the right diesel engine is connected to the right gearbox through another clutch and a right propulsion motor.

8. The hybrid ship propulsion system according to claim 1, characterized in that: It also includes a propulsion device control cabinet. The propulsion devices on both sides are connected to the propulsion device control cabinet. The propulsion device control cabinet is connected to the left machine of the power control unit. The left machine of the power control unit is connected to a power display and control terminal.

9. The hybrid ship propulsion system according to claim 8, characterized in that: The power display and control terminal includes a main end and a secondary end, and the main end and the secondary end are respectively located in the main driver's seat and the secondary driver's seat.

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