Supercharged sail

Abstract

The utility model discloses a supercharged sail, and relates to the technical field of wind propulsion. The main sail comprises a fixed base, a main sail cylinder, a slewing bearing, a main sail slewing driving mechanism, a supporting structure, a lower guide plate, a front edge structure, a rear flap, a flap slewing driving mechanism, a flap lower connecting rod, a flap upper connecting rod, an upper guide plate and a fan. A cylindrical design is adopted as an airflow channel, the compactness of the rotary cylinder sail and the aerodynamic characteristics of the hard wing sail are combined, meanwhile, the production and manufacturing difficulty is lower, and meanwhile, the main sail cylinder body is compact in structure, small in occupied deck space and suitable for being installed on various ship types; the design of a hard wing sail is used for reference, windward is carried out at a specific attack angle, airflow flowing is optimized, and lift efficiency is improved; air is sucked into the main sail cylinder through the fan and discharged, front-back pressure difference is formed, and thrust is enhanced. By means of the design, dependence on natural wind speed is remarkably reduced, operation at a lower wind speed (such as the third level of Typha wind level or below) can be achieved, and the application scene is expanded.

Description

Technical Field

[0001] This utility model relates to the field of wind propulsion technology, specifically a pressurized sail. Background Technology

[0002] With rising fuel costs and increased international conventions on carbon emission control for ships, wind-assisted navigation has gained attention from the shipping and shipbuilding industries due to its low cost and environmental friendliness. The IMO (United Nations Maritime Organization) has also promoted wind-assisted propulsion technology as a standardized green and energy-saving device to the shipping industry, and refined the calculation and verification details of wind-assisted propulsion equipment in EEDI / EEXI through the MEPC77 international conference in November 2021.

[0003] However, currently used wind-assisted propulsion equipment, including rotary sails, rigid wing sails, and sky sails, are highly dependent on wind speeds and usually require winds of Beaufort scale 3 or higher to be used, which limits their application scenarios. At the same time, their lift and thrust efficiency is relatively low.

[0004] To address the aforementioned problems, the inventor proposes a pressurized sail to solve them. Utility Model Content

[0005] In order to solve the above problems, the purpose of this utility model is to provide a pressurized sail.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a pressurized sail, the pressurized sail including a fixed base, a main sail body, a slewing bearing, a main sail slewing drive mechanism, a support structure, a lower guide plate, a leading edge structure, a rear flap, a flap slewing drive mechanism, a lower connecting rod of the flap, an upper connecting rod of the flap, an upper guide plate, and a fan;

[0007] The slewing bearing is fixedly mounted on the upper end of the fixed base. The slewing bearing is connected to the support structure through a flange. The upper end of the support structure is fixedly connected to the lower guide plate. The lower end of the main sail body is fixedly connected to the lower guide plate. The upper end of the main sail body is fixedly connected to the upper guide plate. The leading edge structure is fixedly mounted on the outer surface of the main sail body. The wind turbine is fixedly mounted on the upper end of the main sail body. The rear flap is hinged to the main sail body through the lower flap connecting rod and the upper flap connecting rod.

[0008] The mainsail slewing drive mechanism is assembled in a fixed base. The mainsail slewing drive mechanism is used to control the rotation of the slewing bearing, and the flap slewing drive mechanism is used to control the rear flap to rotate around the mainsail body.

[0009] Preferably, the surface of the main sail body is provided with a plurality of evenly distributed air inlets, and the plurality of air inlets are connected to the inner cavity of the main sail body.

[0010] Preferably, a maintenance ladder and a maintenance platform are assembled between the leading edge structure and the main sail body.

[0011] Preferably, the main sail body is equipped with a flap rotation limiting structure on the side near the rear flap.

[0012] Preferably, the upper guide plate has ventilation holes, which are connected to the inner cavity of the main sail body.

[0013] Preferably, the mainsail slewing drive mechanism controls the rotation of the slewing bearing through either servo control or hydraulic control, and the flap slewing drive mechanism controls the rotation of the rear flap through either servo control or hydraulic control.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, a cylindrical design is used as the airflow channel, which combines the compactness of the rotary sail and the aerodynamic characteristics of the rigid wing sail. At the same time, the manufacturing difficulty is lower, and the main sail tube structure is compact, occupies little deck space, and is suitable for installation on various ship types.

[0016] 2. In this utility model, by drawing on the design of rigid wing sails, the airflow is optimized and the lift efficiency is improved by facing the wind at a specific angle of attack;

[0017] 3. In this utility model, air is drawn into the main sail body and discharged by a fan to form a pressure difference between the front and rear, which enhances the thrust. This design significantly reduces the dependence on natural wind speed and can operate at lower wind speeds (such as Beaufort scale level 3 and below), expanding the applicable scenarios.

[0018] 4. In this utility model, when the rear flap rotates, it will automatically adjust its position according to the wind direction, blocking the air intake on the side that does not need air intake, ensuring that the air intake on the low-pressure side (where the air velocity is higher) is unobstructed. By blocking the air intake on the high-pressure side (where the air velocity is lower), airflow interference is avoided, and the concentrated airflow enters the main sail body through the air intake on the low-pressure side, thereby increasing the pressure difference between the front and rear and improving thrust efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view structural diagram of the pressurized sail of this utility model.

[0021] Figure 2 This is a three-dimensional structural diagram of the pressurized sail of this utility model.

[0022] Figure 3 This utility model Figure 1 The diagram of AA in the image.

[0023] Figure 4 This utility model Figure 1 The diagram of BB in the image.

[0024] Figure 5 This utility model Figure 1 The CC diagram in the image.

[0025] Figure 6 This is a schematic diagram of the rear flap rotation of this utility model.

[0026] Figure 7 This diagram illustrates the thrust generated by the rotation of the rear flap of this utility model.

[0027] In the diagram: 1. Fixed base; 2. Slewing bearing; 3. Electrical control box; 4. Mainsail slewing drive mechanism; 5. Support structure; 6. Lower guide vane; 7. Mainsail tube; 8. Air inlet; 9. Leading edge structure; 10. Rear flap; 11. Flap slewing drive mechanism; 12. Lower flap connecting rod; 13. Upper flap connecting rod; 14. Flap slewing limit structure; 15. Upper guide vane; 16. Maintenance ladder; 17. Maintenance platform; 18. Fan. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1: As Figure 1-7As shown, this utility model provides a pressurized sail, including a fixed base 1, a main sail body 7, a slewing bearing 2, an electrical control box 3, a main sail slewing drive mechanism 4, a support structure 5, a lower guide plate 6, a leading edge structure 9, a rear flap 10, a flap slewing drive mechanism 11, a lower flap connecting rod 12, an upper flap connecting rod 13, a flap slewing limiting structure 14, an upper guide plate 15, and a fan 18. By using the main sail body 7 with a cylindrical design as the airflow channel, combined with a vortex fan... The compactness of the sail and the aerodynamic characteristics of the rigid wing sail are combined with the lower manufacturing difficulty. The bottom end of the fixed base 1 is fixed to the ship deck. The slewing bearing 2 is fixedly installed on the upper end of the fixed base 1. The slewing bearing 2 is connected to the support structure 5 through a flange. The upper end of the support structure 5 is fixedly connected to the lower guide plate 6. The lower end of the main sail body 7 is fixedly connected to the lower guide plate 6. The upper end of the main sail body 7 is fixedly connected to the upper guide plate 15. The fan 18 is fixedly installed on the upper end of the main sail body 7.

[0030] The surface of the main sail hull 7 has several evenly distributed air inlets 8. During rotation, the rear flap 10 automatically adjusts its position according to the wind direction, blocking the air inlets 8 on the side where air intake is not needed. This ensures that the air inlets 8 on the low-pressure side (where air velocity is higher) remain unobstructed. By blocking the air inlets 8 on the high-pressure side (where air velocity is lower), airflow interference is avoided, and the concentrated airflow enters the main sail hull 7 through the air inlets 8 on the low-pressure side, increasing the pressure difference between the front and rear ends and improving thrust efficiency (see reference). Figure 6 and Figure 7The mainsail tube 7 has an inner cavity for airflow. A leading edge structure 9 is fixedly mounted on the outer surface of the mainsail tube 7, located on the windward side of the sail. The rear flap 10 is hinged to the mainsail tube 7 via a lower connecting rod 12 and an upper connecting rod 13, allowing it to rotate around the mainsail tube 7. By incorporating the leading edge structure 9 and the rear flap 10, and drawing inspiration from rigid wing sails, the design allows for a specific angle of attack to be engaged with the wind, optimizing airflow and improving lift efficiency. The mainsail slewing drive mechanism 4 controls the rotation of the slewing bearing 2, and the flap slewing drive mechanism 11 controls the rotation of the rear flap 10 around the mainsail tube 7. A flap slewing limiting structure 14 is mounted on the mainsail tube 7 to limit the rotation angle of the rear flap 10. The leading edge structure 9 is mounted on the outer side of the mainsail tube 7, and a maintenance ladder 16 and a maintenance access ladder are installed between the leading edge structure 9 and the mainsail tube 7. Maintenance platform 17, maintenance ladder 16 and maintenance platform 17 are used for equipment maintenance, and also serve as a reinforcing structure connecting the leading edge structure 9 and the main sail body 7. Ventilation holes are provided on the upper guide plate 15, and the ventilation holes are connected to the inner cavity of the main sail body 7, so that the fan 18 and the main sail body 7 form a complete air passage. Air enters the interior of the main sail body 7 through several air inlets 8 located on the surface of the main sail body 7, and is then discharged through the ventilation holes located on the upper guide plate 15 via the fan 18. The fan 18 draws air into the interior of the main sail body 7 and discharges it, forming a pressure difference between the front and rear, which enhances the thrust. This design significantly reduces the dependence on natural wind speed and can operate at lower wind speeds (such as below Beaufort scale level 3). The electrical control box 3 is mounted on the fixed base 1. The electrical control box 3 is used to control the operation of the main sail rotation drive mechanism 4, the flap rotation drive mechanism 11 and the fan 18.

[0031] The mainsail slewing drive mechanism 4 adopts a servo control method, including a servo motor and a transmission gear set. The servo motor drives the slewing bearing 2 to rotate through the transmission gear set, thereby adjusting the angles of the lower guide vane 6, mainsail body 7, leading edge structure 9, rear flap 10, flap slewing drive mechanism 11, lower flap connecting rod 12, upper flap connecting rod 13, flap slewing limit structure 14, upper guide vane 15, and fan 18 through the support structure 5. The flap slewing drive mechanism 11 adopts a servo control method, including a servo motor and a transmission gear set. Through the cooperation of the servo motor and the transmission gear set, the rear flap 10 rotates on the mainsail body 7.

[0032] Example 2: This utility model provides a pressurized sail. The mainsail slewing drive mechanism 4 adopts a hydraulic control method, including a hydraulic pump and a hydraulic motor. The hydraulic motor converts the oil pressure energy in the hydraulic pump into mechanical energy, driving the slewing bearing 2 to rotate. This allows the support structure 5 to adjust the angles of the lower guide plate 6, mainsail body 7, leading edge structure 9, rear flap 10, flap slewing drive mechanism 11, lower flap connecting rod 12, upper flap connecting rod 13, flap slewing limit structure 14, upper guide plate 15, and wind turbine 18. The flap slewing drive mechanism 11 adopts a hydraulic control method, including a hydraulic pump and a hydraulic motor. The hydraulic motor converts the oil pressure energy in the hydraulic pump into mechanical energy, causing the rear flap 10 to rotate on the mainsail body 7.

[0033] Working principle: Using main components such as the main sail tube 7, leading edge structure 9, rear flap 10, upper guide vane 15, lower guide vane 6, main sail rotation drive mechanism 4, and fan 18, this system combines the advantages of rigid wing sails and rotary sails compared to several widely used wind-assisted propulsion devices. It employs a cylindrical main sail tube 7 as the main airflow channel, and utilizes the leading edge structure 9 and rear flap 10 typically found in rigid wing sails to meet the wind at a certain angle of attack. The main sail tube 7 has air inlets 8, through which the fan 18 draws air into the main sail tube 7 and exhausts it from the top, increasing the air pressure difference between the front and rear sides of the sail. This results in greater thrust with a smaller sail area, while also requiring less wind speed than traditional sails, offering better wind speed adaptability. It also combines the advantages of rotary sails, such as a smaller footprint and greater thrust per unit area.

[0034] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A pressurized sail, characterized in that: The pressurized sail includes a fixed base (1), a main sail tube (7), a slewing bearing (2), a main sail slewing drive mechanism (4), a support structure (5), a lower guide plate (6), a leading edge structure (9), a rear flap (10), a flap slewing drive mechanism (11), a lower flap connecting rod (12), an upper flap connecting rod (13), an upper guide plate (15), and a wind turbine (18). The slewing bearing (2) is fixedly mounted on the upper end of the fixed base (1). The slewing bearing (2) is connected to the support structure (5) through a flange. The upper end of the support structure (5) is fixedly connected to the lower guide plate (6). The lower end of the main sail body (7) is fixedly connected to the lower guide plate (6). The upper end of the main sail body (7) is fixedly connected to the upper guide plate (15). The leading edge structure (9) is fixedly mounted on the outer surface of the main sail body (7). The fan (18) is fixedly mounted on the upper end of the main sail body (7). The rear flap (10) is hinged to the main sail body (7) through the lower flap connecting rod (12) and the upper flap connecting rod (13). The mainsail slewing drive mechanism (4) is assembled in the fixed base (1). The mainsail slewing drive mechanism (4) is used to control the rotation of the slewing bearing (2). The flap slewing drive mechanism (11) is used to control the rear flap (10) to rotate around the mainsail body (7).

2. A pressurized sail as described in claim 1, characterized in that, The surface of the main sail body (7) is provided with a plurality of evenly distributed air inlets (8), and the plurality of air inlets (8) are connected to the inner cavity of the main sail body (7).

3. A pressurized sail as described in claim 1, characterized in that, A maintenance ladder (16) and a maintenance platform (17) are assembled between the leading edge structure (9) and the main sail body (7).

4. A pressurized sail as described in claim 1, characterized in that, The main sail tube (7) is fitted with a flap rotation limiting structure (14) on the side near the rear flap (10).

5. A pressurized sail as described in claim 1, characterized in that, The upper guide plate (15) has ventilation holes, which are connected to the inner cavity of the main sail body (7).

6. A pressurized sail as described in claim 1, characterized in that, The mainsail slewing drive mechanism (4) controls the rotation of the slewing bearing (2) by either servo control or hydraulic control, and the flap slewing drive mechanism (11) controls the rotation of the rear flap (10) by either servo control or hydraulic control.

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