CN107878720A - A kind of retractable symmetrical airfoil wind sail device - Google Patents

Abstract

The present invention proposes a kind of retractable symmetrical airfoil wind sail device, including symmetrical airfoil sail, folding and unfolding sail device, hydraulic control device, self-adjusting angle of attack device (16), wind speed wind direction sensor (5), hydraulic motor control oil pipe (10), mast (11) and pedestal (19)；The symmetrical airfoil sail is connected with the folding and unfolding sail device, and the folding and unfolding sail device is connected with hydraulic control device, and the hydraulic control device is connected with self-adjusting angle of attack device (16).The present invention makes ship utilize symmetrical airfoil sail-assisted propulsion, while the wind direction information adjust automatically sail angle of attack that self-adjusting angle of attack device is gathered by wind speed wind direction sensor under sail, had not only improved the utilization rate of wind energy but also had improved the flexibility of the adjustment sail angle of attack；Folding and unfolding sailage is set to ship's navigation and provides safety guarantee.

Description

A retractable symmetrical airfoil sail device

technical field

The invention relates to the field of wind power navigation aids, in particular to a retractable symmetrical airfoil sail device.

Background technique

Wind energy is a clean energy that exists widely in nature, and it has been used as a source of propulsion for ships for thousands of years before the appearance of heat engines. Due to the poor stability of natural wind and limited energy density, after the advent of ships powered by steam engines, heat engines such as diesel engines quickly replaced wind power as the main propulsion power of modern ships. However, on the one hand, with the increasing shortage of energy in the world, people must quickly find new alternative energy sources; on the other hand, today's public demands for environmental protection and low carbon are increasing, making people gradually turn their attention to clean energy. Wind energy, as a relatively mature technology in clean energy, has been applied to the shipbuilding industry very early. In recent years, the vast majority of inland, offshore and ocean-going ships use the auxiliary thrust generated by sails to reduce the power of the main engine to achieve the purpose of energy saving.

Windwing sail is a new type of sail different from traditional sails. Its section is in the shape of an airfoil. Windwing sail uses offshore wind resources to continuously adjust the angle of attack so that the lift is as consistent as possible with the ship's course, and it is directly converted into ship thrust. The diesel engine together forms the hybrid propulsion power system of the ship, the main power is provided by the diesel engine, and the auxiliary power is provided by the sail.

Disclosed some patents for applying windwing sails on ships and ships, most of them directly make the shape of the sails into airfoils. For example, the patent with the notification number CN 201737153U discloses an airfoil sail. The cross section of the sail surface is an airfoil shape. The mast is arranged at a symmetrical position on the left and right sides of the sail surface. horn.

However, in order to maximize the utilization of wind energy, the ships loaded with this asymmetrical single-wing sail must adjust the windward angle of the sail in time according to the wind direction. Both timeliness and energy-saving considerations have certain disadvantages; and although the wing sail is designed to set the mast at a symmetrical position on the left and right sides of the sail surface when the wind is calm, when there is wind, due to the asymmetry of the left and right sails of the mast, there will be differences. The large or small moment puts the mast under greater stress; in addition, when the wind speed is too high, the wing sail also lacks a sail furling device to ensure the safe navigation of the ship.

Contents of the invention

Aiming at the technical problems existing in the prior art, the present invention proposes a retractable symmetrical airfoil sail device, which is safe and reliable, and can utilize wind power efficiently.

The purpose of the present invention is achieved through the following technical solutions: a retractable symmetrical airfoil sail device, including a symmetrical airfoil sail, a retractable sail device, a hydraulic control device, a self-adjusting angle of attack device 16, a wind speed and direction sensor 5, a hydraulic The motor controls the tubing 10, the mast 11 and the base 19; the symmetrical airfoil sail is connected to the retractable sail device, the retractable sail device is connected to a hydraulic control device, and the hydraulic control device is connected to a self-adjusting angle of attack device 16 connections;

The symmetrical airfoil sail comprises an upper sail surface 1, a lower sail surface 2, an upper bracket 3 and a lower bracket 4, the upper sail surface 1 is fixedly connected to the upper bracket 3, and the lower sail surface 2 is fixedly connected to the lower bracket 4 , the lower bracket 4 is fixedly connected to the mast 11;

The sail retracting device includes a hydraulic motor 6 and a telescopic rod; the hydraulic motor 6 is fixedly connected to the telescopic rod; the upper sail surface 1 is connected to the hydraulic motor 6 through the upper bracket 3 and the connecting slider 17;

The hydraulic control device includes a hydraulic controller 15, a telescopic rod oil tank 13, a hydraulic motor oil tank 14 and a pipeline; the telescopic rod oil tank 13 is connected with the telescopic rod through a pipeline; The rod oil tank 13, the hydraulic motor oil tank 14 are connected to the self-adjusting angle of attack device 16, and the hydraulic motor oil tank 14 is connected to the hydraulic motor control oil pipe 10 through a pipeline; the hydraulic motor control oil pipe 10 is connected to the hydraulic motor 6;

The self-adjusting angle of attack device 16 automatically adjusts the angle of attack of the sail through the wind direction information collected by the wind speed and direction sensor 5; the wind speed and direction sensor 5 is connected to the upper sail surface 1;

The mast 11 is connected to the base 19 through a bearing 12 .

Further, the telescopic rods include a first telescopic rod 7, a second telescopic rod 8 and a third telescopic rod 9; the first to third telescopic rods are connected in sequence.

Further, when the stretching height of the telescopic rod reaches the upper limit, the upper sail surface 1 and the lower sail surface 2 are seamlessly connected; when the stretching height reaches the lower limit, the height of the upper sail surface 1 and the lower sail surface 2 are even.

Furthermore, the symmetrical airfoil sail device also includes a positioning slot 18, which is installed on the mast 11, the bottom of which is a semicircular slot, and the upper part is a linear slot.

Further, the rotation of the hydraulic motor 6 causes the connecting slider 17 to rotate in the semicircular groove, so that the upper sail surface 1 turns to the opposite side of the lower sail surface 2; the up and down movement of the telescopic rod drives the connecting slider 17 Move the upper sail surface 1 until the lower sail surface 2 is flush to realize sail furling, and at this time, the connecting slider 17 is locked with the positioning groove 18.

Further, the cross-section of the symmetrical airfoil sail is two symmetrical thin airfoils with a smooth transition at the middle connection.

The advantages of the present invention are mainly reflected in the following aspects:

1. The present invention uses retractable symmetrical airfoil sails to aid navigation, which significantly improves the utilization rate of wind energy and saves energy;

2. The symmetrical airfoil sail designed by the present invention reduces the twisting moment generated by the mast due to asymmetrical force during navigation;

3. The symmetrical airfoil sail designed by the present invention reduces the deflection of the angle of attack compared with the single-wing sail when the wind direction changes at a large angle, thereby improving the flexibility and timeliness of adjusting the angle of attack of the sail , to improve the navigation aid capability;

4. The symmetrical airfoil sail designed by the present invention adopts hard material, its shape is simple, and its aerodynamic performance and stability are better than traditional soft sails;

5. The control adopts a hydraulic device, which is safe and durable, and the positioning pin groove is positioned, the structure is simple, and the operation is convenient;

6. The designed sail retracting device improves the safety of the ship when sailing in strong winds and waves;

7. The self-adjusting angle of attack device can change the angle of attack of the sail according to the real-time wind conditions at sea to improve the efficiency of navigation and improve the adaptability of the ship.

Description of drawings

Fig. 1 is a structural schematic diagram of a retractable symmetrical airfoil sail device;

Fig. 2 is a schematic top view (sectional view) of the connection between the hydraulic motor and the upper bracket;

Fig. 3 is the front schematic diagram of mast and positioning groove;

Figure 4 is a schematic diagram of the furling process.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

With reference to Figure 1, Figure 2 and Figure 3, a retractable symmetrical airfoil sail device includes a symmetrical airfoil sail, a retractable sail device, a hydraulic control device, a self-adjusting angle of attack device 16, a wind speed and direction sensor 5, a hydraulic The motor controls the tubing 10, the mast 11 and the base 19; the symmetrical airfoil sail is connected to the retractable sail device, the retractable sail device is connected to the hydraulic control device, and the hydraulic control device is connected to the self-adjusting angle of attack device 16 connections;

The symmetrical airfoil sail comprises an upper sail surface 1, a lower sail surface 2, an upper bracket 3 and a lower bracket 4, the upper sail surface 1 is fixedly connected to the upper bracket 3, and the lower sail surface 2 is fixedly connected to the lower bracket 4 , the lower bracket 4 is fixedly connected to the mast 11;

The sail retracting device includes a hydraulic motor 6 and a telescopic rod; the hydraulic motor 6 is fixedly connected to the telescopic rod; the upper sail surface 1 is connected to the hydraulic motor 6 through the upper bracket 3 and the connecting slider 17;

The hydraulic control device includes a hydraulic controller 15, a telescopic rod oil tank 13, a hydraulic motor oil tank 14 and a pipeline; the telescopic rod oil tank 13 is connected with the telescopic rod through a pipeline; The rod oil tank 13, the hydraulic motor oil tank 14 are connected with the self-adjusting angle of attack device 16, and the hydraulic motor oil tank 14 is connected with the hydraulic motor control oil pipe 10 through a pipeline; the hydraulic motor control oil pipe 10 is connected with the hydraulic motor 6; The controller 15 can automatically distribute the hydraulic oil circuit to control the hydraulic motor 6, the telescopic rod, and the self-adjusting angle of attack device 16; The supply of hydraulic oil can also be realized in the middle.

The self-adjusting angle of attack device 16 automatically adjusts the angle of attack of the sail through the wind direction information collected by the wind speed and direction sensor 5; the wind speed and direction sensor 5 is connected to the upper sail surface 1;

The mast 11 is connected to the base 19 through a bearing 12 .

The telescopic rods include a first telescopic rod 7, a second telescopic rod 8 and a third telescopic rod 9; the first to the third telescopic rods are connected in sequence.

When the expansion height of the telescopic rod reaches the upper limit, the upper sail surface 1 and the lower sail surface 2 are seamlessly connected; when the expansion height reaches the lower limit, the upper sail surface 1 and the lower sail surface 2 are at the same height.

The symmetrical airfoil sail device also includes a positioning slot 18, which is installed on the mast 11, the bottom of which is a semicircular slot, and the upper part is a linear slot.

The rotation of the hydraulic motor 6 makes the connecting slider 17 rotate in the semicircular arc groove, so that the upper sail surface 1 is turned to the opposite side of the lower sail surface 2; the up and down movement of the telescopic rod drives the connecting slider 17 to make the upper sail The surface 1 moves to the level of the lower sail surface 2 to realize sail furling, and at this time, the connecting slider 17 is locked with the positioning groove 18.

The cross-section of the symmetrical airfoil sail is two symmetrical thin airfoils with a smooth transition at the middle joint, and is made of glass fiber reinforced plastic.

The working process of the device is as follows:

With reference to Figure 4, the ship uses symmetrical airfoil sails to assist navigation during normal navigation. The real-time wind condition information collected by the wind speed and direction sensor 5 automatically calculates the angle of attack of the sail deflection, and at the same time transmits the signal to the hydraulic controller 15 to control the hydraulic oil to the self-adjusting angle of attack device 16 to rotate the mast 11, thereby adjusting the angle of attack of the sail.

When the ship is navigating in severe sea conditions, the hydraulic controller 15 controls the hydraulic oil to pass through the hydraulic motor oil tank 14, the hydraulic motor control oil pipe 10 in the mast 11 to the hydraulic motor 6, so that the connecting slider 17 connected to it is in the positioning groove on the mast 11 Turn 180° clockwise in 18, so that the upper sail surface 1 is turned to the opposite side of the lower sail surface 2.

At this time, the hydraulic controller 15 controls the hydraulic oil of the first telescopic rod 7, the second telescopic rod 8, and the third telescopic rod 9 to be discharged sequentially through the telescopic rod oil tank 13, so that the telescopic rod is lowered to drive the connecting slider 17 to make the upper sail surface 1 moves to a position flush with the lower sail surface 2 for furling.

The working principle of the present invention is:

The cross-section of the retractable symmetrical airfoil sail is two symmetrical thin airfoils, with a smooth transition at the middle connection. Taking the wind from the left as an example, the wind flows through the sail surface at a certain angle of attack, which will make the upper surface of the left sail denser and the lower surface thinner. According to Bernoulli's theorem, the air velocity on the upper surface of the sail is large, The pressure is small, the flow velocity on the lower surface is small, and the pressure is high. The pressure difference between the upper and lower surfaces generates lift on the left sail surface; at the same time, the wind flows through the right sail surface, which can be regarded as flowing through the arc-shaped sail surface, and the kinetic energy of the wind is converted into driving force. The mechanical energy of the right sail. The resultant force on the left and right sides of the sail is the thrust produced by the symmetrical airfoil sail.

By optimizing the cross-section of the sail under the optimized angle of attack, the resultant force of the left and right sail surfaces can be maximized along the heading direction, and the lateral force can be offset at the same time, reducing the twisting moment of the mast due to asymmetrical force. In addition, when the wind direction changes at a large angle, the symmetrical design reduces the deflection of the angle of attack compared with the single-wing sail, thereby improving the flexibility and timeliness of adjusting the angle of attack of the sail.

Compared with the prior art, the present invention enables ships to use symmetrical airfoil sails to assist navigation, and at the same time, the self-adjusting angle of attack device automatically adjusts the angle of attack of the sails through the wind direction information collected by the wind speed and wind direction sensor, which not only improves the utilization rate of wind energy but also improves The flexibility of adjusting the angle of attack of the sail is improved; the sail retracting device provides a safety guarantee for the ship's navigation.

The retractable symmetrical airfoil sail device provided by the present invention has been introduced in detail above. In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The descriptions of the above embodiments are only used to help Understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification is not It should be understood as a limitation of the present invention.

Claims (6)

1. A retractable symmetrical airfoil sail device is characterized in that: it comprises a symmetrical airfoil sail, a retractable sail device, a hydraulic control device, a self-adjusting angle of attack device (16), a wind speed and direction sensor (5), a hydraulic The motor controls the oil pipe (10), the mast (11) and the base (19); the symmetrical airfoil sail is connected to the retractable sail device, the retractable sail device is connected to a hydraulic control device, and the hydraulic control device Connect with the self-adjusting angle of attack device (16); The symmetrical airfoil sail comprises an upper sail surface (1), a lower sail surface (2), an upper bracket (3) and a lower bracket (4), and the upper sail surface (1) is fixedly connected to the upper bracket (3), The lower sail surface (2) is fixedly connected with the lower bracket (4), and the lower bracket (4) is fixedly connected with the mast (11); The sail retracting device includes a hydraulic motor (6) and a telescopic rod; the hydraulic motor (6) is fixedly connected to the telescopic rod; Connect with hydraulic motor (6); The hydraulic control device includes a hydraulic controller (15), a telescopic rod oil tank (13), a hydraulic motor oil tank (14) and a pipeline; the telescopic rod oil tank (13) is connected with the telescopic rod through a pipeline; the hydraulic control The device (15) is respectively connected with the telescopic rod oil tank (13), the hydraulic motor oil tank (14) and the self-adjusting angle of attack device (16) through the pipeline; the hydraulic motor oil tank (14) is controlled with the hydraulic motor through the pipeline The oil pipe (10) is connected; the hydraulic motor control oil pipe (10) is connected with the hydraulic motor (6); The self-adjusting angle of attack device (16) automatically adjusts the angle of attack of the sail through the wind direction information collected by the wind speed and direction sensor (5); the wind speed and direction sensor (5) is connected to the upper sail surface (1); The mast (11) is connected with the base (19) through a bearing (12). 2. The device according to claim 1, characterized in that: the telescopic rods include a first telescopic rod (7), a second telescopic rod (8) and a third telescopic rod (9); the first to the third telescopic rods The rods are connected in turn. 3. The device according to claim 2, characterized in that: when the expansion height of the telescopic rod reaches the upper limit, the upper sail surface (1) and the lower sail surface (2) are seamlessly connected; when the expansion height reaches the lower limit, the upper sail The surface (1) and the lower sail surface (2) are highly flush. 4. The device according to claim 1, characterized in that: the symmetrical airfoil sail device also includes a positioning groove (18), the positioning groove (18) is installed on the mast (11), and its bottom is semicircular Arc groove, the upper part is a linear groove. 5. The device according to claim 4, characterized in that: the rotation of the hydraulic motor (6) makes the connecting slider (17) rotate in the semicircular arc groove, so that the upper sail surface (1) turns to the lower sail The opposite side of the surface (2); the up and down movement of the telescopic rod drives the connecting slider (17) to make the upper sail surface (1) move to the lower sail surface (2) to be flush to realize sail furling, at this time the connecting slider ( 17) is locked with the positioning groove (18). 6. The device according to claim 1, characterized in that: the cross-section of the symmetrical airfoil sail is two symmetrical thin airfoils, with a smooth transition at the middle connection.