Intelligent ship power propulsion system

Abstract

The invention relates to the technical field of new energy power propulsion, in particular to an intelligent ship power propulsion system, which is characterized in that the influence characterization coefficient of water surface fluctuation of a water storage tank is calculated through an analysis unit so as to judge whether the influence degree of the water surface fluctuation of the water storage tank is in a dominant state or not; whether the water storage tank is in a turning influence state or not is judged through the energy adjusting unit based on the ship rudder blade deflection angle, the swing unit is controlled through the ship rudder blade deflection direction to drive the floating body to swing by a preset angle in the preset direction relative to the generator, or the seawater amount of the water storage tank is adjusted according to the water surface fluctuation influence characterization coefficient, and then the water surface fluctuation influence characterization coefficient is obtained. The energy capture mode of the power propulsion system is adaptively adjusted according to the influence state of the real-time sea condition and the navigation track on the water surface fluctuation in the water storage cabin of the ship, and the energy conversion efficiency of new energy serving as a power source of ship propulsion is improved.

Description

Technical Field

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

[0002] With the continuous development of industrial technology, the scale and efficiency of the shipbuilding industry have been continuously improved. The shipbuilding industry has become one of the most important industrial technologies in the world today. Traditional ship power mostly relies on fuel engines. This method not only has insufficient energy utilization efficiency, but also causes serious pollution to the environment. With the improvement of people's awareness of environmental protection, it has become an inevitable trend to shift the energy source of ship propulsion to clean energy, such as solar energy, wind energy, tidal energy, and wave energy. These energy sources have the advantages of being renewable and less polluting, and can effectively reduce the carbon footprint of the shipping industry. However, these clean energy sources are greatly affected by the environment, the energy supply is discontinuous, and the conversion efficiency is low. It is difficult to form a stable power source for ship propulsion. Therefore, improving the energy conversion efficiency of new energy as a power source for ship propulsion is a technical problem that needs to be solved urgently.

[0003] For example, China Patent Publication No.: CN107628216B, the invention discloses a ship integrated electric propulsion power system, which is composed of a propulsion system mechanism, a power generation and power supply system mechanism and a control center, wherein the propulsion system module is composed of an electric drive propeller, a frequency converter for matching the electric drive propeller, a variable frequency power grid, a variable frequency starting switch module of the motor, and an electric sensor; the power generation and power supply system module is composed of multiple generator sets, a power generation and power supply controller matching the generator sets and the same number, and a power supply network for transmitting power generation; the control center controls the operation of the power generation and power supply system module and the propulsion system module, and the invention of implementing the above system has the effect of energy saving and efficiency improvement.

[0004] The prior art also has the following problems:

[0005] The existing technology does not take into account that the water surface fluctuations in the ship's water storage tank are affected by the navigation sea conditions and the navigation trajectory during the ship's voyage. It cannot adaptively adjust the energy capture method of the power propulsion system according to the impact of the real-time sea conditions and the navigation trajectory on the water surface fluctuations in the ship's water storage tank, thereby affecting the energy conversion efficiency of new energy as a power source for ship propulsion. Summary of the invention

[0006] To this end, the present invention provides an intelligent ship power propulsion system to overcome the problem in the prior art that the energy capture method of the power propulsion system cannot be adaptively adjusted according to the impact of real-time sea conditions and navigation trajectory on water surface fluctuations in the ship's water storage tank.

[0007] To achieve the above object, the present invention provides an intelligent ship propulsion system, comprising:

[0008] Water storage tanks to hold seawater;

[0009] an energy conversion module, comprising a floating body arranged in the water storage tank and a transmission unit connected to the floating body for converting mechanical energy generated by the floating body into mechanical energy of a generator rotor;

[0010] A swing unit, which is arranged on the transmission unit and is used to drive the floating body to swing relative to the generator;

[0011] A sensing module, comprising a wave height acquisition unit for collecting the wave height within a set acquisition period, an ocean current direction acquisition unit for determining the direction of the ocean current, a heading unit for determining the navigation direction of the ship, and an angle acquisition unit for collecting the deflection angle of the ship's rudder blade;

[0012] An analysis unit connected to the sensing module is used to determine the deviation angle based on the angle between the ocean current direction and the navigation direction, and to calculate the coefficient of the water surface fluctuation of the water storage tank based on the deviation angle and the wave height, so as to determine whether the degree of the water surface fluctuation of the water storage tank is in an explicit state;

[0013] An energy adjustment unit, for selecting a control method for the water storage tank, the energy conversion module and the swing unit based on the coefficient representing the influence of the water surface fluctuation, includes:

[0014] Determine whether the water storage tank is in a state affected by turning based on the deflection angle of the ship's rudder blade, and control the swing unit to drive the floating body to swing in a predetermined direction relative to the generator by a predetermined angle based on the deflection direction of the ship's rudder blade;

[0015] Or, the water storage tank is controlled to adjust the amount of seawater in the tank based on the coefficient representing the influence of the water surface fluctuation.

[0016] Furthermore, the analysis unit is also used to determine an ocean current direction vector based on the ocean current direction, determine a sailing direction vector based on the ship sailing direction, and determine a vector angle between the ocean current direction vector and the sailing direction vector as the deviation angle.

[0017] Furthermore, the water surface fluctuation influence characterization coefficient calculated by the analysis unit is positively correlated with the deviation angle and the wave height.

[0018] Furthermore, the analysis unit compares the water surface fluctuation affected characterization coefficient with a preset water surface fluctuation affected characterization coefficient threshold value.

[0019] If the water surface fluctuation influence characterization coefficient is greater than the water surface fluctuation influence characterization coefficient threshold, the analysis unit determines that the water surface fluctuation influence degree of the water storage tank is in an explicit state.

[0020] Furthermore, the energy adjustment unit is further used to compare the water surface fluctuation affected characterization coefficient with a preset water surface fluctuation affected characterization coefficient reference value,

[0021] If the coefficient representing the influence of the water surface fluctuation is less than or equal to the reference value of the coefficient representing the influence of the water surface fluctuation, the energy adjustment unit determines whether the water storage tank is in a state affected by turning based on the deflection angle of the ship's rudder blade, and controls the swing unit to drive the floating body to swing in a predetermined direction relative to the generator by a predetermined angle based on the deflection direction of the ship's rudder blade;

[0022] If the coefficient representing the influence of the water surface fluctuation is greater than the reference value of the coefficient representing the influence of the water surface fluctuation, the energy adjustment unit controls the water storage tank to adjust the amount of seawater in the tank based on the coefficient representing the influence of the water surface fluctuation.

[0023] Furthermore, the energy adjustment unit is also used to record the position of the ship's rudder blade when the ship is moving straight as a reference position of the ship's rudder blade, and determine the angle between the current position of the ship's rudder blade and the reference position as the ship's rudder blade deflection angle.

[0024] Furthermore, the energy adjustment unit compares the ship rudder blade deflection angle with a preset rudder blade deflection angle threshold.

[0025] If the deflection angle of the ship's rudder blade is greater than the rudder blade deflection angle threshold, the energy adjustment unit determines that the water storage tank is in a state affected by turning.

[0026] Furthermore, the energy adjustment unit is also used to determine the deflection direction of the ship rudder blade based on the reference position of the ship rudder blade, and control the swing unit to drive the floating body to swing relative to the generator in the same direction as the deflection direction of the ship rudder blade.

[0027] Furthermore, the energy adjustment unit controls the amount of seawater in the water storage tank to be adjusted, and the adjustment amount is positively correlated with the coefficient of characterization of the influence of the water surface fluctuation.

[0028] Furthermore, the energy conversion module is also connected to a power propulsion module, which includes a generator connected to the transmission unit for converting the mechanical energy of the transmission unit into electrical energy and an energy storage unit connected to the generator for storing the electrical energy generated by the generator.

[0029] Compared with the prior art, the beneficial effect of the present invention lies in that, by setting a water storage tank, an energy conversion module, a swing unit, a sensing module, an analysis unit and an energy adjustment unit, the present invention calculates the water surface fluctuation influence characterization coefficient of the water storage tank through the analysis unit to determine whether the degree of influence of the water surface fluctuation of the water storage tank is in an explicit state, and determines whether the water storage tank is in a state affected by turning based on the deflection angle of the ship's rudder blade through the energy adjustment unit, and controls the swing unit to drive the float to swing a predetermined angle in a predetermined direction relative to the generator based on the deflection direction of the ship's rudder blade, or controls the water storage tank to adjust the amount of seawater in the tank based on the water surface fluctuation influence characterization coefficient, thereby realizing a digital and intuitive characterization of the degree of influence of the water surface fluctuation in the ship's water storage tank on the navigation sea conditions and the navigation trajectory, and adaptively adjusts the energy capture method of the power propulsion system according to the influence of the real-time sea conditions and the navigation trajectory on the water surface fluctuation in the ship's water storage tank, thereby improving the energy conversion efficiency of new energy as a power source for ship propulsion.

[0030] In particular, the present invention calculates the influence characterization coefficient of the water surface fluctuation of the water storage tank through the analysis unit. During the actual navigation of the ship, the angle between the direction of the ocean current and the navigation of the ship represents whether the ship is sailing in the direction of the ocean current or against the ocean current. The direction against the ocean current is more likely to cause the ship to shake during the navigation. Therefore, the larger the angle between the direction of the ocean current and the navigation of the ship, the easier it is for the ship to shake, and the water surface in the water storage tank installed in the cabin is more obviously affected by the bumping of the hull and fluctuates up and down. Similarly, the size of the waves in the sea environment in which the ship is located also directly affects the shaking and bumping of the hull. The present invention combines the two to scientifically and intuitively characterize the degree to which the water surface of the water storage tank is affected by the fluctuation caused by the shaking and bumping of the ship, and further, realizes the digital and intuitive characterization of the degree to which the water surface fluctuation in the ship's water storage tank is affected by the navigation sea conditions.

[0031] In particular, the present invention determines whether the water storage tank is in a state affected by turning through an energy adjustment unit. During the actual navigation of the ship, if the influence of the navigation sea conditions on the fluctuation of the water surface in the water storage tank is relatively general, the influence of the turning state of the hull on the fluctuation of the water surface in the water storage tank can be further considered. During the navigation and turning process of the ship, when the deflection angle of the ship's rudder blade is greater than a preset angle, the turning of the ship will cause a height deviation of the water surface in the water storage tank. The height deviation of the liquid level causes the water surface fluctuations in areas with different liquid level heights in the water storage tank to be affected differently. Furthermore, it realizes the digital and intuitive characterization of the degree to which the water surface fluctuations in the ship's water storage tank are affected by the navigation sea conditions and the navigation trajectory, and adaptively adjusts the energy capture method of the power propulsion system according to the influence of the real-time sea conditions and the navigation trajectory on the water surface fluctuations in the ship's water storage tank, thereby improving the energy conversion efficiency of new energy as a power source for ship propulsion.

[0032] In particular, the present invention controls the swing unit based on the deflection direction of the ship's rudder blade through the energy adjustment unit to drive the float to swing in a predetermined direction and a predetermined angle relative to the generator. When it is determined that the ship's movement and turning have a relatively obvious impact on the water surface fluctuation in the water storage tank, the height deviation of the liquid level causes the water surface fluctuation in the area with higher liquid level in the water storage tank to be more obvious. During the ship's turning process, the hull is tilted inward in the deflection direction, and the liquid level of seawater in the water storage tank is higher in the deflection direction of the hull, and the fluctuation phenomenon of the water surface here is obvious. According to this phenomenon, the device for capturing water surface fluctuations can be transferred to a position with a higher liquid level in the water storage tank, thereby realizing a digital and intuitive representation of the degree to which the water surface fluctuation in the ship's water storage tank is affected by the navigation sea conditions and the navigation trajectory, and adaptively adjusting the energy capture method of the power propulsion system according to the impact of real-time sea conditions and the navigation trajectory on the water surface fluctuation in the ship's water storage tank, thereby improving the energy conversion efficiency of new energy as a power source for ship propulsion.

[0033] In particular, the present invention controls the amount of seawater in the water storage tank through the energy adjustment unit. If the navigation sea conditions have a significant impact on the fluctuation of the water surface in the water storage tank, the seawater level in the water storage tank can be increased by increasing the seawater in the water storage tank. The higher the liquid level in the water storage tank, the greater the amplitude of the liquid surface fluctuation caused by the navigation sea conditions. Large fluctuations in the seawater level will convert more potential energy of seawater into electrical energy of the power generation system and store it in the energy storage unit to provide energy for the ship's propulsion. Furthermore, it realizes the digital and intuitive characterization of the degree to which the water surface fluctuation in the ship's water storage tank is affected by the navigation sea conditions and the navigation trajectory, and adaptively adjusts the energy capture method of the power propulsion system according to the impact of the real-time sea conditions and the navigation trajectory on the water surface fluctuation in the ship's water storage tank, thereby improving the energy conversion efficiency of new energy as a power source for ship propulsion. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A system block diagram of an intelligent ship propulsion system according to an embodiment of the present invention;

[0035] Figure 2 A schematic diagram of the structure of an intelligent ship propulsion system according to an embodiment of the present invention;

[0036] Figure 3 Schematic diagram of the deviation angle between the ocean current direction vector and the navigation direction vector according to an embodiment of the present invention;

[0037] Figure 4 A logic flow chart of the analysis unit of the embodiment of the present invention for determining whether the degree of influence of the water surface fluctuation of the water storage tank is in an explicit state;

[0038] In the figure, 1: water storage tank, 2: floating body, 3: transmission unit, 4: swing unit, 5: generator, 6: sailing direction vector, 7: ocean current direction vector. DETAILED DESCRIPTION

[0039] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0041] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0042] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] See also Figure 1 as well as Figure 2 As shown, Figure 1 is a system block diagram of an intelligent ship propulsion system according to an embodiment of the present invention, Figure 2 The structure diagram of the intelligent ship propulsion system according to the embodiment of the present invention is as follows. The intelligent ship propulsion system according to the present invention comprises:

[0044] A water storage tank 1, used to contain seawater;

[0045] An energy conversion module, comprising a floating body 2 disposed in the water storage tank 1 and a transmission unit 3 connected to the floating body 2 for converting the mechanical energy generated by the floating body 2 into the mechanical energy of the generator rotor;

[0046] a swing unit 4, which is arranged on the transmission unit 3 and is used to drive the floating body 2 to swing relative to the generator 5;

[0047] A sensing module, comprising a wave height acquisition unit for collecting the wave height within a set acquisition period, an ocean current direction acquisition unit for determining the direction of the ocean current, a heading unit for determining the navigation direction of the ship, and an angle acquisition unit for collecting the deflection angle of the ship's rudder blade;

[0048] An analysis unit connected to the sensing module is used to determine the deviation angle based on the angle between the ocean current direction and the navigation direction, and to calculate the affected characterization coefficient of the water surface fluctuation of the water storage tank 1 based on the deviation angle and the wave height, so as to determine whether the affected degree of the water surface fluctuation of the water storage tank 1 is in an explicit state;

[0049] The energy adjustment unit is used to select the control method of the water storage tank 1, the energy conversion module and the swing unit 4 based on the coefficient of the water surface fluctuation, including:

[0050] Based on the deflection angle of the ship's rudder blade, determine whether the water storage tank 1 is in a state affected by turning, and based on the deflection direction of the ship's rudder blade, control the swing unit 4 to drive the floating body 2 to swing in a predetermined direction relative to the generator 5 by a predetermined angle;

[0051] Or, the water storage tank 1 is controlled to adjust the amount of seawater in the tank based on the coefficient representing the influence of the water surface fluctuation.

[0052] Specifically, the present invention does not limit the specific method for adjusting the amount of seawater in the water storage tank 1. Preferably, in an embodiment of the present invention, a water inlet channel, a water outlet channel can be set in the water storage tank 1, and a functional water pump can be set on the relevant pipelines to meet the needs of adjusting the amount of seawater in the water storage tank 1.

[0053] Specifically, in the present invention, the angle at which the swing unit 4 drives the float 2 to swing in a predetermined direction relative to the generator 5 is set according to the distance between the float 2 and the bulkhead in the actual water storage tank 1. A safe distance must be reserved between the float 2 and the bulkhead to ensure that the float 2 will not scratch the bulkhead when floating on the water surface. Those skilled in the art can set the angle at which the swing unit 4 drives the float 2 to swing in a predetermined direction relative to the generator 5 according to this setting logic.

[0054] Specifically, the present invention does not limit the specific structure of the transmission unit 3. Preferably, in an embodiment of the present invention, the rotating unit can be a plurality of connecting structures connecting the floating platform and the generator rotor, which can convert the mechanical energy of the floating platform's up and down fluctuations on the water surface into the mechanical energy of the rotor rotation. This technology is widely used in the field of generating electricity using generators such as tidal energy, and will not be repeated here.

[0055] Specifically, the present invention does not limit the specific structure of the swing unit 4. In the embodiment of the present invention, it can be a riveted structure of a connecting rod supported by a hydraulic structure, so as to realize the swing angle control of the riveting by controlling the hydraulic stroke. It can also be a motor driving a gear chain to realize the relative swing of the hinged connection structure at the hinge. This structure is a common technology in the field of mechanical structures in various industries and will not be repeated here.

[0056] Specifically, the present invention does not limit the specific structure of the wave height collection unit, which can be a wave observation sensor installed on the hull, including a buoy sensor or a fixed sensor, which calculates the wave height by measuring parameters such as the surface height, wavelength and period of the waves. This is an existing technology for ships and will not be repeated here.

[0057] Specifically, the present invention does not limit the specific structure of the ocean current direction acquisition unit. In fact, the existing ship electronic system can obtain information on the ocean current direction through satellite remote sensing data, and can also use instruments such as current meters to measure the ocean current direction. This is an existing technology for ships and will not be repeated here.

[0058] Specifically, the present invention does not limit the specific structure of the heading unit. Preferably, in an embodiment of the present invention, a GPS navigation system can be selected. The GPS receiver on the ship can receive signals sent by satellites and calculate the sailing direction of the ship. An inertial navigation system can also be selected to measure the acceleration and angular velocity of the ship using inertial sensors such as gyroscopes and accelerometers, thereby determining the sailing direction of the ship. This is a prior art for ships and will not be described in detail here.

[0059] Specifically, the present invention does not limit the specific structure of the angle acquisition unit. Preferably, in an embodiment of the present invention, a rudder angle sensor can be used to measure the deflection angle of the rudder blade. The rudder angle sensor can be electronic or mechanical, and the deflection angle is determined by measuring the position or angle of the rudder blade. This is a prior art for ships and will not be described in detail here.

[0060] Specifically, the present invention does not limit the specific structure of the analysis unit and the energy adjustment unit, which can be constructed using logic components. The logic components can be field programmable logic components, microprocessors, processors used in computers, etc., which will not be repeated here.

[0061] Specifically, see Figure 3 As shown, it is a schematic diagram of the deviation angle between the ocean current direction vector and the navigation direction vector of an embodiment of the present invention, and the analysis unit is also used to determine the ocean current direction vector 7 based on the ocean current direction, determine the navigation direction vector 6 based on the navigation direction of the ship, and determine the vector angle between the ocean current direction vector 7 and the navigation direction vector 6 as the deviation angle A.

[0062] Specifically, the water surface fluctuation influence characterization coefficient calculated by the analysis unit is positively correlated with the deviation angle and the wave height.

[0063] In a specific embodiment, the coefficient characterizing the influence of water surface fluctuation can be determined by the sum of the ratio of the deviation angle to the deviation angle reference value and the ratio of the wave height to the wave height reference value, wherein the deviation angle reference value can be set according to the average value of the vector angle between the ocean current direction vector and the navigation direction vector when the water surface fluctuation conditions in the water storage tank are good in several historical tests, and the wave height reference value can be set according to the average value of the wave height when the water surface fluctuation conditions in the water storage tank are good in several historical tests.

[0064] Preferably, in an embodiment of the present invention, the preset deviation angle reference value may be 45°, and the preset wave height reference value may be 1.5 m.

[0065] Specifically, the present invention calculates the coefficient of characterization of the influence of water surface fluctuation on water storage tank 1 through the analysis unit. During the actual navigation of the ship, the angle between the direction of ocean current and the navigation of the ship represents whether the ship is sailing in the direction of ocean current or against the direction of ocean current. The direction against ocean current is more likely to cause the ship to shake during navigation. Therefore, the greater the angle between the direction of ocean current and the navigation of the ship, the easier it is for the ship to shake, and the water surface in the water storage tank 1 arranged in the cabin is more obviously affected by the bumping of the hull and fluctuates up and down. Similarly, the size of waves in the sea conditions in which the ship is located also directly affects the shaking and bumping of the hull. The present invention combines the two to scientifically and intuitively characterize the degree of influence of the fluctuation of the water surface in the water storage tank 1 caused by the shaking and bumping of the ship, and further, realizes the digital and intuitive characterization of the degree of influence of the water surface fluctuation in the water storage tank 1 of the ship on the navigation sea conditions.

[0066] Specifically, see Figure 4 As shown in the figure, it is a logic flow chart of the analysis unit of the embodiment of the present invention for determining whether the degree of influence of the water surface fluctuation of the water storage tank 1 is in an explicit state. The analysis unit compares the water surface fluctuation influence characterization coefficient E with the preset water surface fluctuation influence characterization coefficient threshold E. 1 For comparison,

[0067] If the water surface fluctuation affected characterization coefficient E is greater than the water surface fluctuation affected characterization coefficient threshold E 1 , the analysis unit determines that the degree of influence of the water surface fluctuation of the water storage tank 1 is in an explicit state.

[0068] Preferably, in the embodiment of the present invention, the water surface fluctuation is affected by the characterization coefficient threshold E 1 The value range is [1.15,1.18].

[0069] Specifically, the energy adjustment unit is further used to compare the water surface fluctuation affected characterization coefficient E with a preset water surface fluctuation affected characterization coefficient reference value E 2 For comparison,

[0070] If the water surface fluctuation affected characterization coefficient E is less than or equal to the water surface fluctuation affected characterization coefficient reference value E 2 , the energy adjustment unit determines whether the water storage tank 1 is in a state affected by turning based on the deflection angle of the ship's rudder blade, and controls the swing unit 4 to drive the floating body 2 to swing in a predetermined direction and a predetermined angle relative to the generator 5 based on the deflection direction of the ship's rudder blade;

[0071] If the water surface fluctuation affected characterization coefficient E is greater than the water surface fluctuation affected characterization coefficient reference value E 2 , the energy adjustment unit controls the water storage tank 1 to adjust the amount of seawater in the tank based on the coefficient representing the influence of the water surface fluctuation.

[0072] Preferably, in the embodiment of the present invention, the water surface fluctuation is affected by the reference value of the characterization coefficient E 2 =1.1×E 1 .

[0073] Specifically, the energy adjustment unit is also used to record the position of the ship's rudder blade when the ship is moving straight as the reference position of the ship's rudder blade, and determine the angle between the current position of the ship's rudder blade and the reference position as the ship's rudder blade deflection angle β.

[0074] Specifically, the process of the energy adjustment unit determining the state of the water storage tank 1 includes:

[0075] If the comparison of the deflection angle of the ship's rudder blade meets the turning influence condition, the energy adjustment unit determines that the water storage tank 1 is in a state of being affected by the turning;

[0076] If the comparison of the deflection angle of the ship's rudder blade does not meet the turning influence condition, the energy adjustment unit determines that the water storage tank 1 is in a state not affected by the turning;

[0077] Among them, the turning influencing condition is that the deflection angle of the ship's rudder blade is not less than a preset rudder blade deflection angle threshold.

[0078] Preferably, in an embodiment of the present invention, the rudder blade deflection angle threshold β 1 =25°.

[0079] Specifically, the present invention determines whether the water storage tank 1 is in a state affected by turning through an energy adjustment unit. During the actual navigation of the ship, if the influence of the navigation sea conditions on the fluctuation of the water surface in the water storage tank 1 is relatively general, the influence of the turning state of the hull on the fluctuation of the water surface in the water storage tank 1 can be further considered. When the deflection angle of the ship's rudder blade is greater than a preset angle during the navigation and turning process of the ship, the turning of the ship will cause a height deviation of the water surface in the water storage tank 1. The height deviation of the liquid level causes the water surface fluctuations in areas with different liquid level heights in the water storage tank 1 to be affected differently. Furthermore, it realizes the digital and intuitive characterization of the degree to which the water surface fluctuations in the ship's water storage tank 1 are affected by the navigation sea conditions and the navigation trajectory, and adaptively adjusts the energy capture method of the power propulsion system according to the influence of the real-time sea conditions and the navigation trajectory on the water surface fluctuations in the ship's water storage tank 1, thereby improving the energy conversion efficiency of new energy as a power source for ship propulsion.

[0080] Specifically, the energy adjustment unit is also used to determine the deflection direction of the ship rudder blade based on the reference position of the ship rudder blade, and control the swing unit 4 to drive the floating body 2 to swing relative to the generator 5 in the same direction as the deflection direction of the ship rudder blade.

[0081] Specifically, the present invention controls the swing unit 4 based on the deflection direction of the ship's rudder blade through the energy adjustment unit to drive the float 2 to swing in a predetermined direction and a predetermined angle relative to the generator 5. When it is determined that the ship's movement and turning have a relatively obvious impact on the water surface fluctuation in the water storage tank 1, the height deviation of the liquid level causes the water surface fluctuation in the area with a higher liquid level in the water storage tank 1 to be relatively obvious. During the ship's turning process, the hull is tilted inward in the deflection direction, and the liquid level of the seawater in the water storage tank 1 is relatively high in the deflection direction of the hull. The fluctuation phenomenon of the water surface here is obvious. According to this phenomenon, the device for capturing water surface fluctuations can be transferred to a position with a higher liquid level in the water storage tank 1, thereby realizing a digital and intuitive characterization of the degree to which the water surface fluctuation in the ship's water storage tank 1 is affected by the navigation sea conditions and the navigation trajectory, and adaptively adjusting the energy capture method of the power propulsion system according to the impact of the real-time sea conditions and the navigation trajectory on the water surface fluctuation in the ship's water storage tank 1, thereby improving the energy conversion efficiency of new energy as a power source for ship propulsion.

[0082] Specifically, the energy adjustment unit controls the water storage tank 1 to adjust the amount of seawater in the tank, and the amount of seawater adjustment is positively correlated with the coefficient E representing the effect of the water surface fluctuation.

[0083] Preferably, in this embodiment, at least three water volume adjustment modes are set in the energy adjustment unit to control the water volume in the water storage tank 1 based on the water surface fluctuation affected characterization coefficient E, wherein the water surface fluctuation affected characterization coefficient E is compared with a preset first water surface fluctuation affected characterization coefficient comparison value E. aAnd the second water surface fluctuation affected coefficient comparison value E b For comparison,

[0084] If E<E a , it is determined to adopt the first water volume adjustment method, which is that the energy adjustment unit controls the water storage tank 1 to adjust the seawater volume in the tank to the first seawater volume V 1 , set V 1 =V 0 +Δv 1 ;

[0085] If E a ≤D≤E b , it is determined to adopt the second water volume adjustment method, which is that the energy adjustment unit controls the water storage tank 1 to adjust the seawater volume in the tank to the second seawater volume V 2 , set V 2 =V 0 +Δv 2 ;

[0086] If E>E b , it is determined to adopt the third water volume adjustment method, wherein the energy adjustment unit controls the water storage tank 1 to adjust the seawater volume in the tank to the third seawater volume V 3 , set V 3 =V 0 +Δv 3 ;

[0087] Among them, V 0 represents the initial value of the amount of seawater in the water storage tank 1, Δv 1 Indicates the amount of seawater adjustment in the first compartment, Δv 2 Indicates the amount of seawater adjustment in the second compartment, Δv 3 represents the seawater adjustment amount in the third compartment. In this embodiment, in order to make the first water surface fluctuation affected by the characterization coefficient comparison value E a And the second water surface fluctuation affected coefficient comparison value E b It is possible to distinguish the differences in the degree to which the water surface of the water storage tank 1 is affected by the sea conditions during navigation. In this embodiment, E is set a =1.05E 2 , E b =1.1E 2 In order to make the adjustment effective and avoid excessive adjustment, in this embodiment, 0.2V 0 ≤Δv 1 <Δv 2 <Δv 3 ≤2V 0 .

[0088] Specifically, the present invention controls the water storage tank 1 to adjust the amount of seawater in the tank through the energy adjustment unit. If the navigation sea conditions have a very obvious impact on the fluctuation of the water surface in the water storage tank 1, the seawater level in the water storage tank 1 can be increased by increasing the seawater in the water storage tank 1. The higher the liquid level in the water storage tank 1, the greater the amplitude of the liquid surface fluctuation caused by the navigation sea conditions. Large fluctuations in the seawater level will convert more potential energy of seawater into electrical energy of the power generation system and store it in the energy storage unit to provide energy for the ship's propulsion. Furthermore, it realizes the digital and intuitive characterization of the degree to which the water surface fluctuation in the ship's water storage tank 1 is affected by the navigation sea conditions and the navigation trajectory, and adaptively adjusts the energy capture method of the power propulsion system according to the impact of the real-time sea conditions and the navigation trajectory on the water surface fluctuation in the ship's water storage tank 1, thereby improving the energy conversion efficiency of new energy as a power source for ship propulsion.

[0089] Specifically, the energy conversion module is also connected to the power propulsion module, which includes a generator 5 connected to the transmission unit 3 for converting the mechanical energy of the transmission unit 3 into electrical energy, and an energy storage unit connected to the generator 5 for storing the electrical energy generated by the generator 5.

[0090] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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. An intelligent ship propulsion system, characterized in that: include: Water storage tanks to hold seawater; an energy conversion module, comprising a floating body arranged in the water storage tank and a transmission unit connected to the floating body for converting mechanical energy generated by the floating body into mechanical energy of a generator rotor; A swing unit, which is arranged on the transmission unit and is used to drive the floating body to swing relative to the generator; A sensing module, comprising a wave height acquisition unit for collecting the wave height within a set acquisition period, an ocean current direction acquisition unit for determining the direction of the ocean current, a heading unit for determining the navigation direction of the ship, and an angle acquisition unit for collecting the deflection angle of the ship's rudder blade; An analysis unit connected to the sensing module, for determining a deviation angle based on an angle between the ocean current direction and the navigation direction, and calculating a coefficient representing the influence of the water surface fluctuation of the water storage tank based on the deviation angle and the wave height; To determine whether the degree of influence of the water surface fluctuation of the water storage tank is in a dominant state; An energy adjustment unit, for selecting a control method for the water storage tank, the energy conversion module and the swing unit based on the coefficient representing the influence of the water surface fluctuation, includes: Determine whether the water storage tank is in a state affected by turning based on the deflection angle of the ship's rudder blade, and control the swing unit to drive the floating body to swing in a predetermined direction relative to the generator by a predetermined angle based on the deflection direction of the ship's rudder blade; Or, the water storage tank is controlled to adjust the amount of seawater in the tank based on the coefficient representing the influence of the water surface fluctuation.

2. The intelligent ship propulsion system according to claim 1, characterized in that: The analysis unit is further used to determine an ocean current direction vector based on the ocean current direction, determine a sailing direction vector based on the ship sailing direction, and determine a vector angle between the ocean current direction vector and the sailing direction vector as the deviation angle.

3. The intelligent ship propulsion system according to claim 2, characterized in that: The water surface fluctuation influence characterization coefficient calculated by the analysis unit is positively correlated with the deviation angle and the wave height.

4. The intelligent ship propulsion system according to claim 3, characterized in that: The analysis unit compares the water surface fluctuation affected characterization coefficient with a preset water surface fluctuation affected characterization coefficient threshold, If the water surface fluctuation influence characterization coefficient is greater than the water surface fluctuation influence characterization coefficient threshold, the analysis unit determines that the water surface fluctuation influence degree of the water storage tank is in an explicit state.

5. The intelligent ship propulsion system according to claim 4, characterized in that: The energy adjustment unit is further used to compare the water surface fluctuation affected characterization coefficient with a preset water surface fluctuation affected characterization coefficient reference value, If the coefficient representing the influence of the water surface fluctuation is less than or equal to the reference value of the coefficient representing the influence of the water surface fluctuation, the energy adjustment unit determines whether the water storage tank is in a state affected by turning based on the deflection angle of the ship's rudder blade, and controls the swing unit to drive the floating body to swing relative to the generator in a predetermined direction and by a predetermined angle based on the deflection direction of the ship's rudder blade; If the coefficient representing the influence of the water surface fluctuation is greater than the reference value of the coefficient representing the influence of the water surface fluctuation, the energy adjustment unit controls the water storage tank to adjust the amount of seawater in the tank based on the coefficient representing the influence of the water surface fluctuation.

6. The intelligent ship propulsion system according to claim 5, characterized in that: The energy adjustment unit is also used to record the position of the ship's rudder blade when the ship is moving straight as a reference position of the ship's rudder blade, and determine the angle between the current position of the ship's rudder blade and the reference position as the ship's rudder blade deflection angle.

7. The intelligent ship propulsion system according to claim 6, characterized in that: The process of the energy adjustment unit determining the state of the water storage tank includes: If the comparison of the deflection angle of the ship's rudder blade meets the turning influence condition, the energy adjustment unit determines that the water storage tank is in a state of being affected by the turning; If the comparison of the deflection angle of the ship's rudder blade does not meet the turning influence condition, the energy adjustment unit determines that the water storage tank is in a state not affected by the turning; Among them, the turning influencing condition is that the deflection angle of the ship's rudder blade is not less than a preset rudder blade deflection angle threshold.

8. The intelligent ship propulsion system according to claim 6, characterized in that: The energy adjustment unit is also used to determine the deflection direction of the ship rudder blade based on the reference position of the ship rudder blade, and control the swing unit to drive the floating body to swing relative to the generator in the same direction as the deflection direction of the ship rudder blade.

9. The intelligent ship propulsion system according to claim 5, characterized in that: The energy adjustment unit controls the amount of seawater in the water storage tank to be adjusted, and the adjustment amount is positively correlated with the coefficient of characterization of the influence of the water surface fluctuation.

10. The intelligent ship propulsion system according to claim 1, characterized in that: The energy conversion module is also connected to the power propulsion module, which includes a generator connected to the transmission unit for converting the mechanical energy of the transmission unit into electrical energy and an energy storage unit connected to the generator for storing the electrical energy generated by the generator.

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