Arrangement structure of wind power suite of hard wing-shaped sail

Abstract

The invention discloses a wind power suite arrangement structure of a hard wing type sail. The wind power suite arrangement structure comprises a sail blade, end plates at the upper end and the lower end, flow guiding devices arranged on the two sides of the convex face of the sail blade and a rotating mechanism for driving the sail blade to rotate at the bottom. The flow guiding device is composed of two columns of flow guiding rows, each flow guiding row is composed of 30-40 flow guiding sets, and each flow guiding set is composed of two flow guiding pieces which are arranged in a splayed mode and are symmetrically arranged with the central axis as the symmetry axis. By means of the design of the flow guiding device, boundary layer separation caused by the fact that air encounters reverse pressure gradient at the tail end of the sail blade, kinetic energy of a boundary layer is insufficient, and the air is prone to being separated from the surface of an object to form disordered vortexes is effectively avoided. According to the sail, the optimized overall structural design is adopted, and the adaptability of the sail under the complex wind condition is improved. The integrated connecting structure of the end plates and the sail blades is combined with the reinforcing installation mode of the flow guiding device, and the structural stability of key components under the working conditions of high wind speed, variable wind direction and long-term operation is ensured.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding and marine engineering, and specifically relates to the design of efficiency-enhancing devices in wind-assisted propulsion technology. Background Technology

[0002] As the global shipping industry accelerates its transformation towards a green and low-carbon model, reducing ship carbon emissions and improving energy efficiency have become core objectives for industry development. Wind-assisted propulsion technology, as a highly promising green power solution, has once again become a focus of attention in the shipping industry due to its significant advantages of zero carbon emissions and no consumption of traditional fuels. It is considered one of the key paths to reducing ship operating costs and achieving sustainable development.

[0003] Modern rigid airfoil sails utilize aerodynamic principles to generate thrust by exploiting the difference in airflow speed between the concave and convex surfaces of the sail blades. Their design and application have made some progress in recent years. However, current sail technology still faces many bottlenecks in practical applications. Adjusting the sail's swivel angle is a common method to enhance thrust, but this increase is constrained by various factors such as the ship's navigation status, wind direction and speed, and navigation conditions, making it difficult to maximize thrust under complex operating conditions. Even when the angle is adjusted to the theoretical optimal level, structural defects in the sail itself often prevent achieving the desired effect, thus failing to fully unleash its energy-saving potential. Meanwhile, the shortcomings in the existing sail's structural design further exacerbate thrust loss. During operation, turbulent backflow zones easily form at the upper and lower ends due to lateral airflow overflow, interfering with normal airflow and generating reverse drag. The forward-positioned airflow separation point at the outlet reduces the area for effective wind energy utilization, weakening the lift coefficient. Furthermore, the sail and slewing mechanism often use customized flange connections, requiring high precision, complex manufacturing, and high costs. Assembly is cumbersome and maintenance is inconvenient, hindering large-scale deployment. While some studies have attempted to improve performance by optimizing sail blade profiles, these efforts have largely focused on single-factor improvements, failing to develop a synergistic multi-factor system. Particularly concerning is the integration of sail blade surface characteristic control with structural auxiliary flow-guiding devices, where technological gaps remain, hindering a fundamental solution to the insufficient thrust problem. Therefore, innovation across multiple dimensions, including optimizing the sail's structure and surface treatment, to develop technological solutions that significantly enhance thrust and simplify installation and maintenance is essential for the practical application and high efficiency of sail-assisted propulsion technology. This is of great significance for improving the greening of ships and promoting the sustainable development of the shipping industry. Summary of the Invention

[0004] This invention aims to address the problem of poor wind thrust performance in complex sea conditions encountered by various rigid airfoil sails. It incorporates structural wind power components such as endplates and turbine generators on the sail blades to enhance thrust and optimize performance through multiple synergistic effects. This invention is applicable to the performance optimization of various rigid airfoil sails and traditional sails, and can be widely applied to the auxiliary propulsion systems of various vessels such as bulk carriers and container ships. It aims to improve sail thrust efficiency through multi-dimensional structural and material innovation.

[0005] To achieve the above objectives, the present invention provides a rigid airfoil sail wind power kit arrangement structure, including a sail blade, end plates at the upper and lower ends, flow guiding devices arranged on both sides of the convex surface of the sail blade, and a slewing mechanism at the bottom for driving the sail blade to rotate. The flow guiding device includes two rows of flow guiding columns, each of which consists of 30-40 flow guiding groups. Each flow guiding group consists of two flow guiding plates arranged in a figure-eight pattern and symmetrically arranged around the central axis. The two rows of guide vanes are respectively arranged on both sides of the sail tail end of the sail blade convex surface, and are arranged in a mirror image with the center line in the vertical direction of the sail blade convex surface as the axis. The guide vane is made of the same composite material as the sail blade. The material composition is highly compatible with the reinforcing resin system on the surface of the sail blade. It is reliably fixed to the outer surfaces of both sides of the sail blade by a modified epoxy resin structural adhesive.

[0006] In a preferred embodiment, the sail blade is made of glass fiber and manufactured using an integrated vacuum injection molding method.

[0007] In a preferred embodiment, the outer contour of each end plate extends 200-600mm beyond the sail blade profile; the top end plate has a thickness of 40-50mm, extends 200mm-400mm beyond the sail blade profile, is made of the same material as the sail body, and is integrally formed with the sail, with an internal reinforcing structure. In another preferred embodiment, the bottom end plate has a thickness of 40-50mm, extends 200mm-600mm beyond the sail blade profile, and is made of metal.

[0008] In the preferred embodiment, the bottom end plate is located at the bottom end of the sail and extends into the base. The bottom end plate is fixed to the bottom end of the sail using double-ended studs, and its lower part extends to form a base structure, which serves as the connection carrier between the sail and the slewing mechanism.

[0009] In the preferred embodiment, the guide vane of the single-piece guide device is a right-angled triangle, wherein the length of the right-angled side L connected to the surface of the sail is 16.5mm~20.5mm; the length of the right-angled side h perpendicular to the surface of the sail is 6.6mm~7.6mm; the angle β between the single guide vane and the central axis is 13.3°~17.3°; the distance S between two guide vanes in the guide device group is 15.3mm~19.3mm; and the distance Z between groups is 22.4mm~30.4mm.

[0010] In the preferred embodiment, the flow guiding device is positioned at 25% and 30% of the chord length. The key improvements of this invention are as follows: 1. Airflow constraint and structural integration design of endplate device By extending the top and bottom end plates beyond the sail profile, the airflow is blocked from overflowing laterally and the end turbulence is guided, reducing thrust loss. At the same time, the non-metallic material is integrally molded with the sail, and the bottom end plate extends into a connecting base, which takes into account both structural stability and reliable connection with the slewing mechanism, thus solving the problem of turbulent airflow at the end of traditional sails.

[0011] 2. Aerodynamic enhancement and dual fixing design of the flow guiding device By employing a specially shaped airflow guiding structure and optimizing the arrangement of V-shaped arrays to create directional disturbances in the airflow, longitudinal vortices are induced to enhance boundary layer airflow exchange, delay turbulent separation, and improve the effective contact between the sail blades and high-speed winds. At the same time, the dual fixing mechanism of structural adhesive and mechanical interlocking ensures a firm installation, achieving a synergy between airflow guidance and structural reliability.

[0012] This invention has the following technical advantages: 1. The present invention adds integrally formed end plates to the top and bottom of the sail blade. When the sail is working, the turbulence generated will blow back to the back of the sail blade, which will have a significant adverse effect on the thrust of the sail blade. After adding the upper and lower end plates to the sail blade, the turbulence is guided to the back of the end plates, which greatly reduces the interference with the thrust of the sail blade, thereby reducing the thrust loss caused by end turbulence. 2. This invention utilizes the design of the flow guiding device 3 to effectively avoid the problem of insufficient boundary layer kinetic energy caused by air encountering an adverse pressure gradient at the tail end of the sail, which easily leads to turbulent vortices forming on the object's surface, resulting in "boundary layer separation." By increasing VG, airflow separation at the wing's trailing edge can be reduced, optimizing the airflow pattern on the convex surface of the sail airfoil, reducing tail vortices, lowering drag, improving aerodynamic performance, and enhancing stability. Simultaneously, the flow guiding device 3 has the advantages of simple structure, low cost, and convenient maintenance, adapting to complex operating conditions and expanding the application range of sails. Therefore, the core value of the flow guiding device 3 lies in solving the aerodynamic problem of boundary layer separation through "energy replenishment" and "airflow guidance," thereby achieving the goals of drag reduction, efficiency improvement, and stability enhancement. 3. This invention employs an optimized overall structural design, enhancing the sail's adaptability to complex wind conditions. The integrated connection structure between the end plate and the sail blades, combined with the reinforced installation of the flow guide device 3, ensures the structural stability of key components under high wind speeds, changing wind directions, and long-term operating conditions. Attached Figure Description

[0013] Figure 1 : General layout diagram of rigid airfoil sail wind power kit.

[0014] Figure 2 Diagram of the rigid airfoil sail deflector device.

[0015] Figure 3 Location diagram of the rigid airfoil sail guide device.

[0016] Figure 4 This is a schematic diagram of the airflow without a guide device installed on the sail blades.

[0017] Figure 5 A schematic diagram of the airflow with a guide device installed on the sail blades.

[0018] Figure 6 This is a schematic diagram of the airflow without the endplate device installed.

[0019] Figure 7 This is a schematic diagram of the airflow after the endplate device has been installed. 20 In the diagram: 1-sail blade, 1.1-convex surface of the sail blade, 1.2-concave surface of the sail blade, 2-end plate, 2.1-top end plate, 2.2-bottom end plate, 3-guide device; 3.1-guide vane, 3.2-guide group, 3.3-guide row; A-inlet side, B-outlet side, V1-convex surface accelerating wind, V2-concave surface conventional wind, F-thrust; H-airflow, a-turbulent zone. Detailed Implementation

[0020] This invention discloses a method for arranging and installing a rigid airfoil sail wind power kit, such as... Figures 1-7 As shown, it includes a sail 1, an end plate 2, a flow guiding device 3, and a rotating mechanism 4; the end plate 2 is located at the top and bottom of the sail 1, the flow guiding device is located on the surface of the sail 1, and the rotating mechanism 4 is located at the bottom of the sail 1. The surface of the sail blade 1 includes a convex surface 1.1 and a concave surface 1.2, and is made of glass fiber material and manufactured by an integral vacuum injection molding method. The end plate 2 includes a top end plate 2.1 and a bottom end plate 2.2. The outer contours of both the top end plate 2.1 and the bottom end plate 2.2 extend beyond the sail-shaped profile. The lengths by which the top end plate 2.1 and the bottom end plate 2.2 extend beyond the sail-shaped profile are not exactly the same, and the typical range is 200-600 mm. The thickness of the top end plate 2.1 is 40-50mm, and the length of the plate extending beyond the sail blade profile is 200mm-400mm. It is made of the same material as the sail blade body and is integrally formed with the sail blade. A reinforcing structure can be embedded inside to enhance the wind resistance of the top and to block the lateral overflow of the airflow at the top of the sail blade 1, so as to ensure the adaptability and stability of the overall structure. The bottom end plate 2.2 has a thickness of 40-50mm and extends 200mm-600mm beyond the outline of the sail blade. It is made of metal. The bottom end plate 2.2 is located at the bottom of the sail blade 1 and extends into the base. The bottom end plate 2.2 is fixed to the bottom of the sail blade 1 using double-headed studs. Its lower part extends to form a base structure, which serves as the connection carrier between the sail blade 1 and the rotating mechanism 4. The flow guiding device 3 is composed of flow guiding plates 3.1, flow guiding groups 3.2, and flow guiding rows 3.3 in succession; the flow guiding device 3 is composed of two rows of flow guiding rows 3.3, each flow guiding row 3.3 is composed of 30-40 groups of flow guiding groups 3.2, and each flow guiding group 3.2 is composed of two flow guiding plates 3.1; The two columns of guide columns 3.3 are respectively arranged on both sides of the tail end of the sail blade convex surface 1.1, and are arranged in a mirror image with the center line of the vertical direction of the sail blade convex surface 1.1 as the axis. The position of the guide device 3 is described by proportion (i.e., X1 / X), where X1 is the distance from the center point of the guide column 3.3 in the horizontal direction to the nearest edge of the sail blade 1, and X is the horizontal distance between the two edges of the sail blade convex surface. The guide groups 3.2 are arranged longitudinally along the convex surface 3.1 of the sail blade at the same spacing Z. The spacing Z between each pair of adjacent guide groups 3.2 is represented by the distance between the central axes of the two guide groups 3.2. The guide vane 3.1 is a right-angled triangle arranged symmetrically along the central axis. The angle between a single guide vane 3.1 and the central axis is β, and the spacing is S. The long right-angled side of the guide vane 3.1 is directly connected to the surface of the sail (referring to the L side), and the short right-angled side is perpendicular to the surface of the sail (referring to the h side). The guide vane 3.1 is made of the same composite material as the sail blade. The material composition is highly compatible with the reinforcing resin system on the surface of the sail blade. It is reliably fixed to the outer surfaces of both sides of the sail blade by modified epoxy resin structural adhesive. After the adhesive layer is cured, it forms a continuous stress buffer interface. Combined with the bottom dovetail-shaped connection structure and the mechanical interlock formed by the preset groove on the surface of the sail blade, it constitutes a double fixing mechanism. Vibration tests have verified that there is no risk of falling off.

[0021] Example 1: The Influence of Endplate 2 Structure on the Aerodynamic Performance of the Sail This embodiment is based on the design in the technical solution where "the outer contour of endplate 2 exceeds the contour of the sail blade, with an extension width ranging from 200-600mm". The synergistic effect of different endplate 2 configurations is verified through CFD numerical simulation and wind tunnel tests. The specific settings are as follows: (1) End plate 1: The top end plate 2.1 (glass fiber material) with an integral molding and an extension width of 200mm is adopted in the technical solution, and the bottom end plate 2.2 with a metal material has an extension width of 200mm. The bottom end plate 2.2 is connected to the flange base bolt by a pre-embedded threaded sleeve and a double-ended stud. (2) End plate 2: The top end plate 2.1 has an extension width of 200mm (with an internal reinforcing structure), and the bottom end plate has an extension width of 400mm. The connection between its base structure and the rotary mechanism 4 meets the fixing requirements of "assembly of drilled bolt holes and double-headed studs" in the technical solution. (3) End plate 3: The top end plate 2.1 has an extension width of 200mm, and the bottom end plate 2.2 has an extension width of 600mm, to maintain structural compatibility with the body of the sail blade 1. The experimental results show that, compared with the single-sail model without endplates, all three endplate configurations, by preventing lateral overflow of airflow from the top of the sail blades and guiding end turbulence to the back of the endplate, make the sail stall pattern more gradual and effectively improve the problem of sudden thrust drop caused by airflow turbulence. The endplate structure defined in the technical solution increases the maximum lift coefficient of the sail to approximately 2.4, an increase of 9.2% compared to the single-sail model, verifying the effectiveness of endplate 2 in enhancing aerodynamic performance.

[0022] Figure 4 This is a schematic diagram of the airflow without a guide device installed on the sail blades.

[0023] A (Inlet Side): The side where the airflow enters the sail blades is the initial inflow area of ​​high-speed winds (V1, V2), which determines the initial interaction state between the wind and the sail blades.

[0024] B (outlet side): The side from which the airflow exits after passing through the sail blades. The airflow pattern here (such as whether it is turbulent) directly reflects the aerodynamic efficiency of the sail blades.

[0025] V1 (Convex Accelerated Wind): The airflow passing through the convex surface 1.1 of the sail is accelerated due to the airfoil structure of the convex surface, forming a low-pressure area, which is one of the key airflows that generate thrust F.

[0026] V2 (Concave Conventional Wind): The airflow passing through the concave surface 1.2 of the sail blade has a gentler flow velocity than V1, forming a high-pressure zone. Together with the pressure difference of V1, it generates thrust F.

[0027] F (thrust): The combined force formed by the low pressure of the convex surface V1 and the high pressure of the concave surface V2 propels the sail and the ship forward, and is the core power output of the sail.

[0028] 1.1 (Sail blade convex surface): The upper surface of the sail blade has an arc-shaped structure. It accelerates the airflow to form low pressure, which makes a major contribution to the thrust F.

[0029] 1.2 (Sail Blade Concave Surface): The lower surface of the sail blade is relatively flat, forming a high-pressure zone, which, in conjunction with the convex surface, generates a pressure difference.

[0030] Figure 5 A schematic diagram of the airflow with a guide device installed on the sail blades.

[0031] A (inlet side): Consistent with the meaning in Figure 4, this is the initial inflow area of ​​the airflow, where the airflow guiding device 3 begins to guide the airflow.

[0032] B (Outlet side): After installing the airflow guide device 3 on the airflow outlet side, the turbulence of the airflow here is significantly reduced, and the aerodynamic efficiency is improved.

[0033] V1 (Convex Accelerated Airflow): The accelerating airflow flowing through the convex surface 1.1 of the sail is guided by the flow guide device 3, resulting in a more stable acceleration effect, an expanded low-pressure area, and a stronger contribution to the thrust F.

[0034] V2 (Concave Conventional Wind): The conventional airflow passing through the concave surface 1.2 of the sail blades has improved stability in the high-pressure zone and a more significant pressure difference compared to Figure 4.

[0035] F (thrust): After the addition of the flow guiding device 3, the thrust F increases significantly due to the expansion of the low-pressure area of ​​V1 and the greater stability of the high-pressure area of ​​V2, and the output is more stable.

[0036] 1.1 (Sail blade convex surface): Consistent with the meaning in Figure 4, it is the main working surface of the flow guiding device 3. The flow guiding device 3 is arranged on its surface to guide the V1 airflow.

[0037] 1.2 (Sail blade concave surface): Consistent with the meaning in Figure 4, it serves as a carrier in the high-pressure zone and works with the convex surface to achieve pressure difference.

[0038] 3 (Guiding Device): A device consisting of guide vanes, guide groups, and guide columns, arranged in the air inlet to outlet area of ​​the convex surface 1.1 of the sail blade. By guiding the airflow, it suppresses turbulence, prolongs the laminar flow state of V1, thereby increasing the thrust F and optimizing aerodynamic stability.

[0039] Figure 6 This is a schematic diagram of the airflow without the endplate device installed.

[0040] 1 (Sail): The core aerodynamic component of the wind power kit, it is the main body of the airflow (H), and its airfoil structure (convex surface, concave surface) determines the initial airflow acceleration and pressure difference formation.

[0041] H (Airflow): External airflow, flowing in from the inlet side A, passing through the sail blade 1 and flowing out from the outlet side B, is the power source that generates thrust.

[0042] A (inlet side): The airflow H enters one side of the sail blade 1. Here, the airflow is not constrained by the end plate and tends to diffuse laterally towards the top and bottom of the sail blade.

[0043] B (outlet side): The airflow H flows out of the side of the sail 1. Due to the lack of end plate obstruction, the airflow at the top and bottom of the sail overflows laterally, forming a turbulent zone marked "b", which leads to airflow turbulence and thrust loss.

[0044] Figure 7 This is a schematic diagram of the airflow after the endplate device has been installed.

[0045] 1 (Sail): Consistent with the meaning in Figure 6, it is the main body of the airflow H. With the cooperation of the endplate device, its airfoil structure significantly improves aerodynamic efficiency.

[0046] H (airflow): Consistent with the meaning in Figure 6, it is the power source that generates thrust. After passing through the end plate device, the airflow pattern becomes more regular.

[0047] A (Inlet Side): The airflow H enters one side of the sail 1, where the top end plate 2.1 and the bottom end plate 2.2 begin to constrain the airflow to prevent lateral diffusion.

[0048] B (outlet side): The airflow H flows out of one side of the sail 1. The top end plate 2.1 and the bottom end plate 2.2 effectively block the lateral overflow of the airflow, greatly reducing the turbulence zone marked "a". The airflow flows out more smoothly from the outlet side, improving thrust stability.

[0049] 2.1 (Top End Plate): The end plate installed at the top of the sail 1 has an outer contour that extends beyond the sail profile. It is used to block the lateral overflow of the airflow at the top of the sail, maintain the effective range of the convex acceleration wind (V1), and enhance aerodynamic efficiency.

[0050] 2.2 (Bottom End Plate): The end plate installed at the bottom of the sail 1 has an outer contour that extends beyond the sail profile. In addition to blocking the lateral overflow of the bottom airflow, it also extends to form a base structure, serving as a connection carrier between the sail and the rotating mechanism, while optimizing the bottom airflow pattern.

[0051] Example 2: The effect of the position of the flow guide device 3 on lift performance This embodiment, based on the design in the technical solution that "the flow guiding device consists of two rows of three groups of flow guiding devices arranged at the convex end of the sail," investigates the influence of different arrangement positions through CFD simulation and wind tunnel tests. The specific structural parameters of the three groups of flow guiding devices are as follows: the flow guiding plate 3.1 of the single-piece flow guiding device 3 is a right-angled triangle, wherein the length of the right-angled side (L side) connected to the surface of the sail blade is 16.5 mm, and the length of the right-angled side (h side) perpendicular to the surface of the sail blade is 6.6 mm; the angle (β angle) between the single-piece flow guiding device 3 and the central axis is 15.3°; the internal spacing (S) of the three groups of flow guiding devices is 17.3 mm, and the spacing (Z) between the groups is 26.4 mm. The three sets of flow guiding devices are doubly fixed by modified epoxy resin structural adhesive and dovetail mechanical interlock. The distance between their center lines is set to the proportion of the entire width of the sail (i.e., the "position X of the two rows of flow guiding devices 3" as defined in the technical solution) as 15%, 20%, 25%, 30%, 35%, and 40%, respectively, and the two rows are arranged symmetrically.

[0052] The experimental results show that when the flow guide device 3 is positioned at 25% and 30% of the chord length, the flow guide device 3 in the technical solution significantly expands the linear segment of the lift curve through its "energy replenishment" and "airflow guidance" functions. The lift coefficient continuously increases with the angle of attack until the stall angle of attack reaches 30°, and the maximum lift coefficient increases to 2.51, which is more than 10% higher than the "clean model" without the flow guide device 3, effectively solving the boundary layer separation problem. Conversely, when installed at 15% and 40% of the chord length, the expected airflow pattern optimization effect of the technical solution was not achieved, and the slope of the lift line decreased significantly. Therefore, the 25% and 30% chord length positions were determined to be the preferred installation positions for the flow guide device 3.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rigid airfoil sail wind power package arrangement, characterized by, The sail (1), the end plate (2) at the top and bottom, the flow guide device (3) arranged on both sides of the sail convex surface (1.1), and the rotation mechanism (4) for driving the rotation of the sail bottom; The flow guide device (3) includes two rows of flow guide rows (3.3), which are composed of 30-40 groups of flow guide groups (3.2), and the flow guide group (3.2) is composed of 2 flow guide pieces (3.1) arranged in an eight-shaped pattern and symmetrically arranged with the center axis as the axis. The two rows of flow guide rows (3.3) are arranged on both sides of the sail convex surface (1.1) at the sail tail end, and are mirror image arranged with the center line in the vertical direction of the sail convex surface (1.1) as the axis. The flow guide piece (3.1) is made of the same composite material as the sail.

2. The rigid airfoil kite wind power package arrangement according to claim 1, c h a r a c t e r i z e d i n that The sail (1) is made of glass fiber material and is manufactured by one-piece vacuum infusion molding.

3. The rigid airfoil kite wind power package arrangement according to claim 1, c h a r a c t e r i z e d i n that The outer contour of the end plate (2) exceeds the sail profile contour by 200-600 mm. The thickness of the top end plate (2.1) is 40-50 mm, the length exceeding the sail profile contour is 200-400 mm, the material is the same as the sail body, and the top end plate (2.1) is integrally formed with the sail and embedded with a reinforcing structure.

4. The rigid airfoil kite wind power package arrangement according to claim 1, c h a r a c t e r i z e d i n that The thickness of the bottom end plate (2.2) is 40-50 mm, the length exceeding the sail profile contour is 200-600 mm, and the material is metal.

5. The hard wing type sail wind power kit arrangement structure according to claim 4, wherein The bottom end plate (2.2) is located at the bottom end of the sail (1) and extends out of the base, and the bottom end plate (2.2) is fixed to the bottom end of the sail (1) by using double-headed studs, and the lower part extends to form a base structure, which serves as a coupling carrier of the sail (1) and the rotation mechanism (4).

6. The hard wing type sail wind power kit arrangement structure according to claim 1, wherein The flow guide piece (3.1) of the single-piece flow guide device (3) is a right triangle, wherein the length of the right angle side L connected with the sail surface is 16.5-20.5 mm, and the length of the right angle side h perpendicular to the sail surface is 6.6-7.6 mm. The included angle β between the single-piece flow guide piece (3.1) and the center axis is 13.3-17.3°, the distance S between the two flow guide pieces (3.1) in the group is 15.3-19.3 mm, and the distance Z between the groups is 22.4-30.4 mm.

7. The rigid airfoil kite wind power package arrangement according to claim 1, wherein, The flow guide device (3) is arranged at 25% and 30% chord length positions.

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