Supercharged sail

Abstract

The invention discloses a supercharged sail, and relates to the technical field of wind propulsion. The device 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] The invention relates to the technical field of wind propulsion, in particular to a pressurized sail. Background Art

[0002] With the rise in fuel costs and the increasing control of carbon emissions from ships under international conventions, the use of sails to assist navigation has gained attention from the shipping and shipbuilding industries due to its low cost and environmentally friendly advantages. IMO (United Nations Maritime Organization) has also promoted wind-assisted propulsion technology as a green and energy-saving standardized equipment to the shipping industry, and included wind-assisted propulsion equipment in the calculation formula of the ship design energy efficiency index EEDI\EEXI through the MEPC77 international conference in December 2021;

[0003] However, the wind-assisted propulsion equipment currently used, including rotor sails, rigid wing sails, sky sails, etc., are highly dependent on wind force levels and usually require wind force of level 3 or above on the Beaufort scale to be used. The application scenarios are limited. At the same time, their lift and thrust efficiency are low.

[0004] In view of the above problems, the inventor proposes a pressurized sail to solve the above problems. Summary of the invention

[0005] In order to solve the above-mentioned problems, an object of the present invention is to provide a pressurized sail.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a pressurized sail, the pressurized sail comprises a fixed base, a main sail cylinder, a slewing bearing, a main sail slewing drive mechanism, a supporting structure, a lower guide plate, a leading edge structure, a rear flap, a flap slewing drive mechanism, a flap lower connecting rod, a flap upper connecting rod, an upper guide plate and a fan;

[0007] The slewing bearing is fixedly arranged at the upper end of the fixed base, the slewing bearing is connected to the supporting structure through a flange, the upper end of the supporting structure is fixedly connected to the lower guide plate, the lower end of the mainsail cylinder is fixedly connected to the lower guide plate, the upper end of the mainsail cylinder is fixedly connected to the upper guide plate, the leading edge structure is fixedly arranged on the outer surface of the mainsail cylinder, the fan is fixedly arranged at the upper end of the mainsail cylinder, and the rear flap is hingedly mounted on the mainsail cylinder through a flap lower connecting rod and a flap upper connecting rod;

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

[0009] Preferably, a plurality of evenly distributed air inlet holes are provided on the surface of the mainsail cylinder, and the plurality of air inlet holes are communicated with the inner cavity of the mainsail cylinder.

[0010] Preferably, a maintenance ladder and a maintenance platform are installed between the leading edge structure and the mainsail cylinder.

[0011] Preferably, a flap rotation limiting structure is installed on the side of the mainsail cylinder close to the rear flap.

[0012] Preferably, ventilation holes are provided on the upper guide plate, and the ventilation holes are communicated with the inner cavity of the mainsail cylinder.

[0013] Preferably, the mainsail slewing drive mechanism controls the rotation of the slewing bearing by any one of servo control and hydraulic control, and the flap slewing drive mechanism controls the rotation of the rear flap by any one of servo control and hydraulic control.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the present invention, by adopting a cylindrical design as an airflow channel, the compactness of the rotary sail and the aerodynamic characteristics of the hard wing sail are combined, and the manufacturing difficulty is lower. At the same time, the main sail cylinder has a compact structure and occupies little deck space, which is suitable for installation on various ship types;

[0016] 2. In the present invention, by referring to the design of the hard wing sail, the wind is faced at a specific angle of attack to optimize the airflow and improve the lift efficiency;

[0017] 3. In the present invention, air is sucked into the mainsail cylinder through a fan and discharged, forming a pressure difference between the front and rear to enhance 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), expanding the applicable scenarios;

[0018] 4. In the present invention, when the rear flap rotates, it will automatically adjust its position according to the wind direction, blocking the air intake holes on the side where air intake is not needed, ensuring that the air intake holes on the side of the low-pressure area (higher air velocity) are unobstructed, and by blocking the air holes on the side of the high-pressure area (lower air velocity), airflow interference is avoided, and the airflow is concentrated to enter the mainsail cylinder through the air intake holes on the side of the low-pressure area, thereby enhancing the front and rear pressure difference and improving thrust efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the front structure of the pressurized sail of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the pressurized sail of the present invention.

[0022] Figure 3 For the present invention Figure 1 AA schematic diagram in .

[0023] Figure 4 For the present invention Figure 1 BB schematic diagram in .

[0024] Figure 5 For the present invention Figure 1 Schematic diagram of CC in .

[0025] Figure 6 It is a schematic diagram of the rotation of the rear flap of the present invention.

[0026] Figure 7 It is a thrust demonstration diagram of the rotation of the rear flap of the present invention.

[0027] In the figure: 1. fixed base; 2. slewing bearing; 3. electric control box; 4. mainsail slewing drive mechanism; 5. supporting structure; 6. lower guide plate; 7. mainsail cylinder; 8. air inlet; 9. leading edge structure; 10. rear flap; 11. flap slewing drive mechanism; 12. flap lower connecting rod; 13. flap upper connecting rod; 14. flap slewing limit structure; 15. upper guide plate; 16. maintenance ladder; 17. maintenance platform; 18. fan. DETAILED DESCRIPTION

[0028] 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.

[0029] Embodiment 1: Figure 1-7As shown, the present invention provides a pressurized sail, including a fixed base 1, a main sail cylinder 7, a slewing bearing 2, an electric control box 3, a main sail slewing drive mechanism 4, a supporting structure 5, a lower guide plate 6, a leading edge structure 9, a rear flap 10, a flap slewing drive mechanism 11, a flap lower connecting rod 12, a flap upper connecting rod 13, a flap slewing limit structure 14, an upper guide plate 15 and a fan 18. By adopting the main sail cylinder 7, a cylindrical design is adopted as an airflow channel, and a rotary sail is combined with The compactness and aerodynamic characteristics of the hard wing sail are lowered while the manufacturing difficulty is lower. The bottom end of the fixed base 1 is fixed on the ship deck, the slewing bearing 2 is fixedly arranged on the upper end of the fixed base 1, the slewing bearing 2 is connected to the supporting structure 5 through a flange, the upper end of the supporting structure 5 is fixedly connected to the lower guide plate 6, the lower end of the mainsail cylinder 7 is fixedly connected to the lower guide plate 6, the upper end of the mainsail cylinder 7 is fixedly connected to the upper guide plate 15, and the fan 18 is fixedly arranged on the upper end of the mainsail cylinder 7;

[0030] The surface of the main sail barrel 7 is provided with a number of evenly distributed air inlet holes 8. When the rear flap 10 rotates, it will automatically adjust its position according to the wind direction, blocking the air inlet holes 8 on the side where air inlet is not needed, ensuring that the air inlet holes 8 on the side of the low pressure area (higher air velocity) are unobstructed. By blocking the air inlet holes 8 on the side of the high pressure area (lower air velocity), air flow interference is avoided, and the air flow is concentrated to enter the main sail barrel 7 through the air inlet holes 8 on the side of the low pressure area, thereby enhancing the front and rear pressure difference and improving the thrust efficiency (refer to Figure 6 and Figure 7), the inner cavity of the mainsail barrel 7 is used as a channel for airflow flow, the leading edge structure 9 is fixedly arranged on the outer surface of the mainsail barrel 7, located on the windward side of the sail, the rear flap 10 is hingedly installed on the mainsail barrel 7 through the flap lower connecting rod 12 and the flap upper connecting rod 13, and can rotate around the mainsail barrel 7. By setting the leading edge structure 9 and the rear flap 10, the design of the hard wing sail is borrowed to face the wind at a specific angle of attack, optimize the airflow, and improve the lift efficiency. The mainsail slewing drive mechanism 4 is used to control the rotation of the slewing bearing 2, and the flap slewing drive mechanism 11 is used to control and drive the rear flap 10 to rotate around the mainsail barrel 7. The flap slewing limiting structure 14 is installed on the mainsail barrel 7, and is used to limit the rotation angle of the rear flap 10. The leading edge structure 9 is installed on the outside of the mainsail barrel 7, and an inspection ladder 16 and an inspection ladder are installed between the leading edge structure 9 and the mainsail barrel 7. The repair platform 17, the inspection ladder 16 and the inspection platform 17 are used for equipment maintenance and also as a reinforcement structure for connecting the leading edge structure 9 with the mainsail cylinder 7. The upper guide plate 15 is provided with ventilation holes, which are connected with the inner cavity of the mainsail cylinder 7, so that the fan 18 and the mainsail cylinder 7 form a complete airway. The air enters the interior of the mainsail cylinder 7 through a plurality of air inlet holes 8 located on the surface of the mainsail cylinder 7, and is then discharged through the ventilation holes located on the upper guide plate 15 through the fan 18. The air is sucked into the interior of the mainsail cylinder 7 and discharged through the fan 18, forming a front-to-rear pressure difference and enhancing the thrust. This design significantly reduces the dependence on natural wind speed and can operate at a lower wind speed (such as below Beaufort wind scale level 3). The electric control box 3 is assembled on the fixed base 1, and the electric control box 3 is used to control the operation of the mainsail slewing drive mechanism 4, the flap slewing 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 plate 6, the mainsail cylinder 7, the leading edge structure 9, the rear flap 10, the flap slewing drive mechanism 11, the flap lower connecting rod 12, the flap upper connecting rod 13, the flap slewing limit structure 14, the upper guide plate 15 and the fan 18 through the supporting 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 is rotated on the mainsail cylinder 7.

[0032] Embodiment 2: The present invention provides a pressurized sail, in which 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, thereby adjusting the angles of the lower guide plate 6, the mainsail cylinder 7, the leading edge structure 9, the rear flap 10, the flap slewing drive mechanism 11, the flap lower connecting rod 12, the flap upper connecting rod 13, the flap slewing limit structure 14, the upper guide plate 15 and the fan 18 through the supporting structure 5. 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, so that the rear flap 10 rotates on the mainsail cylinder 7.

[0033] Working principle: Compared with several wind-assisted propulsion devices that are currently widely used, the mainsail barrel 7, the leading edge structure 9, the rear flap 10, the upper guide plate 15, the lower guide plate 6, the mainsail rotation drive mechanism 4, the fan 18 and other main components are used. The advantages of the hard wing sail and the rotary sail are combined, and the cylindrical mainsail barrel 7 is used as the main airflow channel. The leading edge structure 9 and the rear flap 10 usually possessed by the hard wing sail are adopted. The mainsail barrel 7 faces the wind at a certain angle of attack. An air inlet 8 is opened on the mainsail barrel 7. The air is sucked into the mainsail barrel 7 through the air inlet 8 by the fan 18, and then discharged from the top, thereby increasing the air pressure difference between the front and rear sides of the sail, thereby achieving greater thrust with a smaller sail area. At the same time, the wind speed requirement is also lower than that of traditional sails, and it has better wind speed adaptability. At the same time, it has the advantages of a small footprint and a greater thrust per unit area of ​​the rotary sail.

[0034] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

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

2. A pressurized sail as claimed in claim 1, characterized in that: A plurality of evenly distributed air inlet holes (8) are provided on the surface of the main sail cylinder (7), and the plurality of air inlet holes (8) are communicated with the inner cavity of the main sail cylinder (7).

3. A pressurized sail as claimed in claim 1, characterized in that: An inspection ladder (16) and an inspection platform (17) are installed between the leading edge structure (9) and the main sail cylinder (7).

4. A pressurized sail as claimed in claim 1, characterized in that: A flap rotation limiting structure (14) is installed on one side of the main sail cylinder (7) close to the rear flap (10).

5. A pressurized sail as claimed in claim 1, characterized in that: The upper guide plate (15) is provided with a ventilation hole, and the ventilation hole is communicated with the inner cavity of the main sail cylinder (7).

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

Images