Diesel-electric hybrid propulsion system for ship

Abstract

The utility model discloses a diesel-electric hybrid propulsion system for a ship, which comprises a diesel propulsion mechanism, an electric propulsion mechanism and a control device, the diesel propulsion mechanism comprises a diesel engine, a clutch, a motor, a gearbox and a propulsion shafting, the diesel engine is connected with the clutch, the clutch is connected with the motor, the motor is connected with the gearbox, and the propulsion shafting is connected with the electric propulsion mechanism. The gear box is connected with the propulsion shaft system; the electric propulsion mechanism comprises a mute unit, and the mute unit is electrically connected with the motor; the control device controls the diesel propulsion mechanism and the electric propulsion mechanism to be switched. Therefore, the ship propulsion device is provided with two independent propulsion mechanisms which can be standby for each other, so that the safety of the ship is improved; when sailing under an electric propulsion mechanism, noise and vibration are very small, it is ensured that noise pollution cannot be caused to the surrounding environment in the sailing process, silent sailing is achieved, the cruising ability of silent sailing is high, a silent unit and a diesel engine share the same fuel, and a silent mode can be used for running in the whole cruising period.

Description

TECHNICAL FIELD

[0001] The utility model relates to diesel engine technical field especially relates to a ship diesel electricity hybrid propulsion system. BACKGROUND

[0002] The existing hybrid propulsion system of the ship mostly adopts the battery and diesel engine to provide power, wherein the battery is charged by the shore power. The diesel engine and the battery serve as the power output unit to provide power to the propeller through the double-input gear box. The diesel engine is started during the conventional navigation to transmit power to the propeller through the gear box, and the motor can reversely charge the battery during the period. The diesel engine is not operated under the specific working condition, and the battery provides power to the motor, and the clutch transmits power to the propeller through the gear box.

[0003] The existing hybrid propulsion system of the ship has the following shortcomings:

[0004] The shafting is complex, the gear box has double-shaft input, and occupies a large space;

[0005] The battery has limited energy storage, slow charging, and limited endurance under the silent working condition; the battery has short service life and high replacement cost;

[0006] The system converts AC and DC multiple times, and the power system is complex. UTILITY MODEL CONTENTS

[0007] In view of the above-mentioned defects, the technical problem to be solved by the utility model is to provide a ship diesel electricity hybrid propulsion system having two independent propulsion mechanisms, both of which can ensure the safe navigation of the ship. When navigating under the electric propulsion mechanism, the noise and vibration are very small, silent navigation is realized, and the silent navigation has strong endurance.

[0008] To solve the above-mentioned technical problems, the technical scheme of the utility model is:

[0009] A ship diesel electricity hybrid propulsion system, comprising a diesel engine propulsion mechanism, an electric propulsion mechanism and a control device, wherein the control device is electrically connected with the diesel engine propulsion mechanism and the electric propulsion mechanism respectively, the diesel engine propulsion mechanism comprises a diesel engine, a clutch, a motor, a gear box and a propulsion shafting, the output shaft of the diesel engine is connected with the input shaft of the clutch, the output shaft of the clutch is connected with one end of the motor output shaft, the other end of the motor output shaft is connected with the input shaft of the gear box, and the output shaft of the gear box is connected with the propulsion shafting; the electric propulsion mechanism comprises a silent unit, the silent unit is electrically connected with the motor, and the silent unit provides electric energy for the motor; and the control device controls the switching of the diesel engine propulsion mechanism and the electric propulsion mechanism.

[0010] Preferably, the output shaft of the diesel engine is connected to the input shaft of the clutch through a high-elasticity coupling.

[0011] Preferably, the clutch is a wet clutch.

[0012] Preferably, the electric propulsion mechanism further comprises an energy storage device, which is electrically connected to the electric motor.

[0013] Preferably, the control device comprises a control unit and a switching unit which are electrically connected.

[0014] The control unit is electrically connected to the diesel engine propulsion mechanism and the electric propulsion mechanism respectively.

[0015] The switching unit is used to transmit a switching signal to the control unit, and the control unit controls the switching of the diesel engine propulsion mechanism and the electric propulsion mechanism according to the switching signal.

[0016] Preferably, the switching unit comprises a human-computer interaction component, which is used to input the switching signal.

[0017] Preferably, the human-computer interaction component comprises a switching button.

[0018] Preferably, the control device further comprises a start-stop button which is electrically connected to the control unit.

[0019] Preferably, the energy storage device is a storage battery.

[0020] Preferably, the propulsion shaft system is connected to a propeller.

[0021] After the above technical scheme is adopted, the beneficial effects of the present application are as follows:

[0022] The ship diesel-electric hybrid propulsion system of the utility model, including diesel engine propulsion mechanism, electric propulsion mechanism and control device, control device is connected with diesel engine propulsion mechanism and electric propulsion mechanism respectively, diesel engine propulsion mechanism includes diesel engine, clutch, motor, gear box and propulsion shafting, the output shaft of diesel engine is connected with the input shaft of clutch, the output shaft of clutch is connected with one end of motor output shaft, the other end of motor output shaft is connected with the input shaft of gear box, the output shaft of gear box is connected with propulsion shafting;Electric propulsion mechanism includes silent unit, silent unit is connected with motor, silent unit provides electric energy for motor;Control device controls diesel engine propulsion mechanism and electric propulsion mechanism switching. Visible, the utility model has independent diesel engine propulsion mechanism and electric propulsion mechanism, two propulsion mechanisms can guarantee the safe navigation of ship, can be mutual standby, increase the safety of ship;When sailing under electric propulsion mechanism, noise and vibration are very small, ensure that will not cause noise pollution to the surrounding environment in the navigation process, realize silent navigation, and the endurance of silent navigation is strong, silent unit and diesel engine share same fuel, and can use silent mode operation in whole endurance cycle. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the schematic diagram of the ship diesel-electric hybrid propulsion system in the utility model;

[0024] Figure 2 It is the layout schematic diagram of diesel engine propulsion mechanism in the utility model;

[0025] In the drawing: 1-diesel engine, 2-clutch, 3-motor, 4-gear box, 5-screw, 6-silent unit. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, the utility model is further explained in detail below in combination with the drawings and examples.It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0027] It should be noted that in the description of the utility model, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the direction or positional relationship of the terms based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0028] In addition, it needs to be explained that, in the description of the utility model, unless another explicit provision and limitation, the term "installation", "connection", "connection" should be broad sense, for example, can be fixed connection, can be detachable connection, or integrally connected, can be mechanical connection, can be electrical connection, can be directly connected, can be indirectly connected through the intermediate medium, can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0029] As Figure 1 And Figure 2 The utility model discloses a ship diesel-electric hybrid propulsion system, including diesel engine propulsion mechanism, electric propulsion mechanism and control device, and control device is connected with diesel engine propulsion mechanism and electric propulsion mechanism electricity respectively, and control device controls diesel engine propulsion mechanism and electric propulsion mechanism switching.

[0030] As Figure 1 And Figure 2 The utility model discloses a diesel engine propulsion mechanism, including diesel engine 1, clutch 2, motor (M) 3, gear box 4 and propulsion shafting, the output shaft of diesel engine 1 is connected with the input shaft of clutch 2, and the output shaft of diesel engine 1 is connected with the input shaft of clutch 2 through high elasticity coupling in the embodiment, the output shaft of clutch 2 is connected with one end of motor 3 output shaft, and the other end of motor 3 output shaft is connected with the input shaft of gear box 4, and the output shaft of gear box 4 is connected with propulsion shafting, and the propulsion shafting is connected with propeller 5 in the embodiment, one preferred scheme, and the clutch is wet clutch.

[0031] As Figure 1 And Figure 2 The utility model discloses a diesel engine propulsion mechanism, including diesel engine 1, clutch 2, motor (M) 3, gear box 4 and propulsion shafting, the output shaft of diesel engine 1 is connected with the input shaft of clutch 2, and the output shaft of diesel engine 1 is connected with the input shaft of clutch 2 through high elasticity coupling in the embodiment, the output shaft of clutch 2 is connected with one end of motor 3 output shaft, and the other end of motor 3 output shaft is connected with the input shaft of gear box 4, and the output shaft of gear box 4 is connected with propulsion shafting, and the propulsion shafting is connected with propeller 5 in the embodiment, one preferred scheme, and the clutch is wet clutch.

[0032] As Figure 1 And Figure 2 The utility model discloses a diesel engine propulsion mechanism, including diesel engine 1, clutch 2, motor (M) 3, gear box 4 and propulsion shafting, the output shaft of diesel engine 1 is connected with the input shaft of clutch 2, and the output shaft of diesel engine 1 is connected with the input shaft of clutch 2 through high elasticity coupling in the embodiment, the output shaft of clutch 2 is connected with one end of motor 3 output shaft, and the other end of motor 3 output shaft is connected with the input shaft of gear box 4, and the output shaft of gear box 4 is connected with propulsion shafting, and the propulsion shafting is connected with propeller 5 in the embodiment, one preferred scheme, and the clutch is wet clutch.

[0033] Diesel push mode: in this mode, diesel engine 1 runs, clutch 2 is engaged, at this time, motor 3 is not powered, and the propulsion shaft is idling; the handle of the control device outputs the acceleration and deceleration signals to the diesel engine 1, and when the handle of the control device issues the disengagement command, the gear box 4 is disengaged, and the propulsion shaft and the propeller 5 start to run.

[0034] Electric push mode: in this mode, the diesel engine 1 does not run, and the clutch 2 is in the disengaged state. At this time, the silent unit 6 starts to work, and the motor 3 is powered. The handle of the control device outputs the acceleration and deceleration signals to the motor 3, and when the handle of the control device issues the disengagement command, the gear box 4 is disengaged, and the propulsion shaft and the propeller 5 start to run. In this mode, the power of the whole ship is provided by the silent unit 6, the noise and vibration are much smaller than those in the diesel push mode, and the mode is suitable for navigation working conditions with silence requirements, and is therefore also called the silence mode; the propulsion shaft speed in the electric push mode is more responsive than that in the diesel push mode, and the ship maneuverability can be greatly improved.

[0035] As shown in Figure 1 and Figure 2 , the mode switching between the diesel push mode and the electric push mode in the utility model is as follows:

[0036] From the electric push mode to the diesel push mode, the control device gives a switching signal, the diesel engine 1 starts to work, and then the clutch 2 is immediately engaged, the motor 3 stops working, the power output of the propulsion shaft is converted from the motor 3 to the diesel engine 1, and the motor 3 idles with the shaft. The control handle signal is also converted from being output to the motor 3 to being output to the diesel engine 1.

[0037] From the diesel push mode to the electric push mode, the control device gives a switching signal, the diesel engine 1 stops working, the clutch 2 is immediately disengaged, and the motor 3 starts to work to provide power output for the propulsion shaft. The control handle signal is also converted from being output to the diesel engine 1 to being output to the motor 3.

[0038] It can be seen that the two mode switching operations in the utility model are simple, the two kinds of propulsion modes can be seamlessly converted at any time, the ship can normally sail during the conversion, the propulsion system structure is simple and compact, the arrangement is basically consistent with that of the conventional propulsion system, the gear box 4 does not need to increase the input shaft, and the propulsion system is particularly suitable for ships with narrow engine rooms.

[0039] The utility model discloses a control device includes control unit, switching unit and start button, and start button and switching unit are electrically connected with control unit respectively, wherein control unit can be STM32 series singlechip, PLC and so on, and control unit is electrically connected with the diesel engine propulsion mechanism and electric propulsion mechanism respectively, wherein switching unit is used for transmission (or input) switching signal to control unit, and control unit controls diesel engine propulsion mechanism and electric propulsion mechanism switching according to switching signal, wherein switching unit can include but is not limited to man-machine interaction component, and man-machine interaction component is used for input switching signal, a kind of preferred scheme, man-machine interaction component includes switching key. Of course, man-machine interaction component can also be touch screen etc. In addition, switching unit can also include wireless communication unit, and wireless communication unit is wirelessly communicated with remote controller, when using, switching signal can be wirelessly input by remote controller.

[0040] When actually using, switching key is operated, switching signal is transmitted to control unit, and control unit switches according to the received electric signal in diesel engine propulsion mechanism and electric propulsion mechanism, to realize one-key intelligent switching, simplify operation, and it is more convenient to use.

[0041] The electric propulsion mechanism in the embodiment can include an energy storage device, which is electrically connected with the motor 3, and the energy storage device can be a storage battery but is not limited to it. When actually using, the energy storage device can be used to replace the silent unit 6, that is, the storage battery is used to supply power to the motor 3, and at this time, the storage battery is used as a backup, so that the electric propulsion mechanism can reliably provide power for the motor 3 and meet various use requirements.

[0042] Compared with the prior art, the utility model has the following advantages:

[0043] Because the diesel engine propulsion mechanism is composed of a main engine, a clutch, a motor, a gear box and a propulsion shaft system. This structure of the ship has only one logic for forward and reverse rotation, that is, the forward and reverse rotation function of the gear box 4 realizes the forward and reverse rotation conversion of the ship. The main engine and the motor 3 have only one direction when working, and because the clutch 2 is a wet clutch, there is no speed limit for the combined exhaust speed, so the one-key conversion of the main engine and the motor 3 can be realized at any shaft speed.

[0044] The motor 3 does not need to be reversed, and only needs to control the speed of the motor 3, so the control device does not need a separate controller, and the control system of the diesel engine 1 and the motor 3 is the same set, which controls the speed of the motor 3 in the electric propulsion mode and controls the speed of the diesel engine 1 in the diesel propulsion mode.

[0045] The motor 3 is between the gearboxes 4, the motor 3 rotation speed is not limited by the propeller 5 rotation speed, can be same as the diesel engine 1 rotation speed, the propeller 5 rotation speed is adjusted by the speed ratio of the gearbox 4, the efficiency is same as the diesel engine 1 propelling time, so the motor 3 power can be very large, the ship can also be high speed sailing in the mute mode.

[0046] The above only describes the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A diesel-electric hybrid propulsion system for a marine vessel, comprising a diesel propulsion mechanism, an electric propulsion mechanism and a control device, the control device being electrically connected with the diesel propulsion mechanism and the electric propulsion mechanism respectively, characterized in that, the diesel propulsion mechanism comprises a diesel engine, a clutch, an electric motor, a gear box and a propulsion shafting, an output shaft of the diesel engine being connected with an input shaft of the clutch, an output shaft of the clutch being connected with one end of an output shaft of the electric motor, the other end of the output shaft of the electric motor being connected with an input shaft of the gear box, an output shaft of the gear box being connected with the propulsion shafting; the electric propulsion mechanism comprises a silent unit, the silent unit being electrically connected with the electric motor, the silent unit providing electric energy for the electric motor; the control device controls the diesel propulsion mechanism and the electric propulsion mechanism to switch.

2. Marine diesel-electric hybrid propulsion system according to claim 1, characterized in that the output shaft of the diesel engine is connected with the input shaft of the clutch through a high-elastic coupling.

3. The marine diesel-electric hybrid propulsion system of claim 1, wherein, the clutch is a wet clutch.

4. The marine diesel-electric hybrid propulsion system of claim 1, wherein, the electric propulsion mechanism further comprises an energy storage device, the energy storage device being electrically connected with the electric motor.

5. The marine diesel-electric hybrid propulsion system of claim 1, wherein, the control device comprises a control unit and a switching unit electrically connected; the control unit is electrically connected with the diesel propulsion mechanism and the electric propulsion mechanism respectively; the switching unit is used for transmitting a switching signal to the control unit, the control unit controlling the diesel propulsion mechanism and the electric propulsion mechanism to switch according to the switching signal.

6. The marine diesel-electric hybrid propulsion system of claim 5, wherein, the switching unit comprises a human-computer interaction component, the human-computer interaction component being used for inputting the switching signal.

7. The marine diesel-electric hybrid propulsion system of claim 6, wherein, the human-computer interaction component comprises a switching button.

8. The marine diesel-electric hybrid propulsion system of claim 5, wherein, the control device further comprises a start-stop button electrically connected with the control unit.

9. The marine diesel-electric hybrid propulsion system of claim 4, wherein, the energy storage device is a storage battery.

10. The marine diesel-electric hybrid propulsion system of claim 1, wherein, the propulsion shafting is connected with a propeller.

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