Wind power boosting device with intercepting plate

Abstract

The invention relates to a wind power boosting device with an intercepting plate, which comprises a main shaft capable of rotating by taking the axis of the main shaft as a rotating shaft; the front sail is parallel to the main shaft, fixed to the main shaft and capable of rotating along with the main shaft, the front end of the cross section of the front sail is a round end, and the rear end of the cross section of the front sail is a sharp end; the rear sail is parallel to the main shaft, the front end of the cross section of the rear sail is a round end, the rear end of the cross section of the rear sail is a sharp end, the front end of the rear sail is connected with the rear end of the front sail and can rotate relative to the front sail, and a gap is formed between the front end of the rear sail and the rear end of the front sail; and the intercepting plate is arranged at the rear end of the rear sail and is parallel to the main shaft. The invention provides a wind power boosting device with an intercepting plate, which can solve the problem that the existing sail body is not enough in lifting force and poor in boosting effect due to small size, or is not suitable for limited ship space due to large size.

Description

Technical Field

[0001] The present invention relates to the field of ships, and specifically to a wind-assisted device with a current intercepting plate. Background Art

[0002] In recent years, wind-assisted propulsion devices have gradually become a research hotspot. Prototype machines and products have been put into trial use and actual use both at home and abroad. They can generate lift by wind power and use the lift and drag to generate a resultant force in the direction of the bow to assist propulsion. Currently, the existing airfoil sail products have various limitations in layout. For example, the sail area used is small and its lift is insufficient. If the sail area is large, the occupied space is also large. Although some sails are made as retractable types, since their main shafts are not retractable, it still affects the loading and unloading of goods. Some sails are made as foldable types, but still face the problem of limited space on the ship's deck and excessive space occupied by the sail after being folded down. Summary of the Invention

[0003] The present invention provides a wind-assisted device with a current intercepting plate, which can solve the problem that the existing sail is either too small to generate sufficient lift and has poor boosting effect, or too large to be applicable to the limited space of the ship's hull.

[0004] The wind-assisted device with a current intercepting plate of the present invention includes:

[0005] A main shaft that can rotate about its own axis;

[0006] A front sail, which is parallel to the main shaft and fixed to the main shaft and can rotate with the main shaft. The front end of the cross-section of the front sail is a round end and the rear end is a pointed end;

[0007] A rear sail, which is parallel to the main shaft. The front end of the cross-section of the rear sail is a round end and the rear end is a pointed end. The front end of the rear sail is connected to the rear end of the front sail and can rotate relative to the front sail, and a gap is formed between the front end of the rear sail and the rear end of the front sail;

[0008] A current intercepting plate, which is arranged at the rear end of the rear sail and is parallel to the main shaft.

[0009] Preferably, a first rotating shaft parallel to the main shaft is provided at the rear end of the front sail, and a second rotating shaft parallel to the main shaft is provided at the front end of the rear sail. The wind-assisted device further includes a connecting member. One end of the connecting member is connected to the first rotating shaft, can rotate relative to the first rotating shaft and can be locked, and the other end is connected to the second rotating shaft, can rotate relative to the second rotating shaft and can be locked.

[0010] Preferably, in the working state, the windward side of the front sail and the rear sail is the pressure surface. The angle α formed between the side of the front sail chord line facing the pressure surface of the front sail and the side of the rear sail chord line facing the pressure surface of the rear sail is 90° - 180°. In the folded state, the chord lines of the front sail and the rear sail are parallel.

[0011] Preferably, in the folded state, the rear sail is parallel to the front sail.

[0012] Preferably, the ratio of the chord length of the front sail to the chord length of the rear sail is 60:40 to 40:60.

[0013] Preferably, in the working state, the windward side of the flow interceptor is the pressure surface. The angle β formed between the pressure surface of the flow interceptor and the side of the rear sail chord line facing the pressure surface of the rear sail is 45° - 135°.

[0015] Preferably, the flow interceptor can rotate relative to the rear sail and can be locked.

[0016] Preferably, the width of the flow interceptor is 2% to 5% of the chord length of the rear sail.

[0017] Preferably, the boosting device further includes a base. The base includes a first body fixed to the hull, a pin shaft connected to the first body, a second body rotatable around the pin shaft, and a power structure for driving the rotation of the second body. The pin shaft is horizontally arranged, and the main shaft is fixed to the second body.

[0018] Preferably, the power structure is a hydraulic mechanism or a screw mechanism.

[0019] Compared with the prior art, the present invention has the following beneficial effects: In the working state, the windward side of the front sail and the rear sail is the pressure surface, and the other side is the suction surface. The angles of the front sail and the rear sail can be adjusted so that the air flow first passes through the pressure surface of the front sail, and the high-speed air flow on the pressure surface of the front sail enters the suction surface of the rear sail through the gap between the front sail and the rear sail, which can increase the lift of the rear sail and delay the air flow separation on the suction surface, thereby increasing the lift coefficient and the lift, and improving the aerodynamic performance. At the same time, the flow interceptor can increase the pressure on the pressure surfaces of the front and rear sails, thereby increasing the lift. In the non-working state, the rear sail can be rotated to the folded state, as Figure 3 shown, which can greatly reduce the space occupied by the boosting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic structural diagram of a wind power boosting device with a flow interceptor in the working state according to an embodiment of the present invention.

[0021] Figure 2 FIG. is a schematic diagram of the first step of folding a wind power boosting device with a flow interceptor according to an embodiment of the present invention.

[0022] Figure 3 Schematic diagram of the second step of folding of the wind-assisted device with a flow interceptor according to an embodiment of the present invention.

[0023] Figure 4 Schematic diagram of the wind-assisted device with a flow interceptor according to an embodiment of the present invention in a laid-down state.

[0024] Figure 5 Schematic diagram of the operation of the wind-assisted device with a flow interceptor according to an embodiment of the present invention with the wind in one direction.

[0025] Figure 6 Schematic diagram of the operation of the wind-assisted device with a flow interceptor according to an embodiment of the present invention with the wind in another direction.

[0026] Reference numerals

[0027] 1 Main shaft;

[0028] 2 Front sail, 21 Pressure surface, 22 Suction surface, 23 First rotating shaft;

[0029] 3 Rear sail, 31 Pressure surface, 32 Suction surface, 33 Second rotating shaft;

[0030] 4 Flow interceptor, 41 Flow interceptor rotating shaft;

[0031] 5 Connecting member;

[0032] 6 Base, 61 First body, 62 Pin shaft, 63 Second body, 64 Power structure. Detailed implementation manners

[0033] The present invention provides a wind-assisted device with a flow interceptor 4, which is installed on a ship to generate an auxiliary thrust on the ship by means of wind, such as Figure 1 shown. The wind-assisted device includes a main shaft 1, a front sail 2, a rear sail 3 and a flow interceptor 4. The main shaft 1 is installed on a base 6 and is vertical in the working state and can rotate about its own axis, and the direction of its rotation is as shown by the arrows in Figure 5 and Figure 6 . The front sail 2 is parallel to the main shaft 1 and fixed to the main shaft 1 and can rotate with the main shaft 1. The front end of the cross-section of the front sail 2 is a round end and the rear end is a pointed end. The rear sail 3 is also parallel to the main shaft 1. The front end of the cross-section of the rear sail 3 is a round end and the rear end is a pointed end. The front end of the rear sail 3 is connected to the rear end of the front sail 2 and can rotate relative to the front sail 2, and a gap is formed between the front end of the rear sail 3 and the rear end of the front sail 2. The flow interceptor 4 is arranged at the rear end of the rear sail 3 and is parallel to the main shaft 1.

[0034] In the working state, the windward sides of the foresail 2 and the aft sail 3 are the pressure surfaces 21, 31, and the other sides are the suction surfaces 22, 32. The angles of the foresail 2 and the aft sail 3 can be adjusted so that the air flow first passes through the pressure surface 21 of the foresail 2, that is, the windward surface. The high-speed air flow on the pressure surface 21 of the foresail 2 enters the suction surface 32 of the aft sail 3 through the gap between the foresail 2 and the aft sail 3, which can increase the lift of the aft sail 3 and delay the separation of the air flow on the suction surface, thereby increasing the lift coefficient and the lift, and thus improving the aerodynamic performance. At the same time, the intercepting plate 4 can increase the pressure on the pressure surfaces 21, 31 of the foresail 2 and the aft sail 3, thereby increasing the lift. In the non-working state, the aft sail 3 can be rotated to the folded state, as Figure 3 shown, so that the space occupied by the boosting device can be greatly reduced.

[0035] In the working state, the angle α formed between the side of the chord line of the foresail 2 facing the pressure surface 21 of the foresail and the side of the chord line of the aft sail 3 facing the pressure surface 31 of the aft sail 3 is 90° - 180°. In the folded state, the chord lines of the foresail 2 and the aft sail 3 are parallel. In Figure 5 and Figure 6 the chord lines are represented by dotted lines. The ratio of the chord length of the foresail 2 to the chord length of the aft sail 3 is 60:40 - 40:60, and in this embodiment, it is 40:60.

[0036] As Figure 1 shown, the foresail 2 is provided with a first rotating shaft 23 parallel to the main shaft 1 near its rear end, and the aft sail 3 is provided with a second rotating shaft 33 parallel to the main shaft 1 near its front end. As Figure 1 shown, the wind power boosting device further includes a connecting member 5. One end of the connecting member 5 is connected to the first rotating shaft 23 and can rotate relative to the first rotating shaft 23 and can be locked. The rotating direction is as Figure 5 and Figure 6 shown. The other end is connected to the second rotating shaft 33 and can rotate relative to the second rotating shaft 33 and can be locked. The rotating direction is as Figure 5 and Figure 6 shown. The first rotating shaft 23 and the second rotating shaft 33 can be a shaft passing through the entire height direction of the foresail 2 or the aft sail 3, or can be two shafts protruding from the upper and lower ends of the foresail 2 or the aft sail 3 respectively. In this embodiment, the latter is adopted. The locking of the connecting member 5 relative to the first rotating shaft 23 and the second rotating shaft 33 can be realized by a friction member or a pin structure, etc., or can be realized by the engagement of the teeth of a gear. When folding is required, the first step is that the aft sail 3 and the connecting member 5 jointly rotate around the first rotating shaft 23 to the Figure 2 shown state. The second step is that the aft sail 3 rotates around the second rotating shaft 33 to the Figure 3 shown state. In the folded state, the aft sail 3 is parallel to the foresail 2.

[0037] Figure 5 The wind-assisted device with a flow interceptor 4 is shown generating thrust with the wind in one direction, and the wind direction is as indicated by the arrow. When the wind direction is opposite, first rotate the main shaft 1 so that the front sail 2 rotates from Figure 6 position A1 in the figure to position A2. At this time, the rear sail 3 is at position B1. Then rotate the rear sail 3 so that the rear sail 3 rotates to position B2. At this time, the flow interceptor 4 is at C1, and then rotate the flow interceptor 4 from C1 to C2, thus completing the adjustment of the wind-assisted device.

[0038] In this embodiment, the flow interceptor 4 is connected to the rear sail 3 through a flow interceptor rotating shaft 41. The flow interceptor 4 can rotate relative to the rear sail 3 and can be locked, and the rotation direction is as Figure 5 and Figure 6 indicated by the arrow in the figure. In the working state, the side of the flow interceptor 4 facing the wind is the pressure surface. The angle β formed between the pressure surface of the flow interceptor 4 and the chord line of the rear sail 3 on the pressure surface side of the rear sail 3 is 45° - 135°, and in this embodiment, it is 90°. The width of the flow interceptor 4 is 2% to 5% of the chord length of the rear sail 3 (the dimension from the front end to the rear end of the rear sail), which can better improve the lift. In this embodiment, the width of the flow interceptor 4 is 3% of the chord length of the rear sail 3.

[0039] As Figure 1 and Figure 4 shown, the boosting device further includes a base 6. The base 6 includes a first body 61 fixed to the hull, a pin shaft 62 connected to the first body 61, a second body 63 rotatable around the pin shaft 62, and a power structure 64 for driving the rotation of the second body 63. The pin shaft 62 is horizontally arranged, and the main shaft 1 is fixed to the second body 63. In the working state, the second body 63 presses on the first body 61. In the folded state, the second body 63 rotates until the main shaft 1, the front sail 2, and the rear sail 3 fall on the deck of the hull, thereby realizing the folding down of the front sail 2 and the rear sail 3. The power structure 64 can adopt a hydraulic mechanism or a screw mechanism. In this embodiment, a hydraulic rod is adopted.

[0040] A driving mechanism (not shown in the figure) for driving the rotation of the main shaft 1 can be arranged in the second body 63, such as a motor and a gear. The output shaft of the motor drives the rotation of the driving gear, and drives the rotation of the driven gear fixed outside the main shaft 1, so that the main shaft 1 rotates and can stay at any angle.

[0041] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art, within the essence and protection scope of the present invention, various modifications or equivalent replacements made to the present invention also fall within the protection scope of the present invention.

Claims

1. A wind boosting device with a flow interceptor, characterized in that Comprising: A main shaft that can rotate about its own axis; A front sail, parallel to the main shaft and fixed to the main shaft to rotate therewith, the front end of the cross-section of the front sail being a round end and the rear end being a pointed end; A rear sail, parallel to the main shaft, the front end of the cross-section of the rear sail being a round end and the rear end being a pointed end, the front end of the rear sail being connected to the rear end of the front sail and rotatable relative to the front sail, and a gap being formed between the front end of the rear sail and the rear end of the front sail; A flow interception plate provided at the rear end of the rear sail and parallel to the main shaft.

2. The wind power boosting device with a flow interception plate according to claim 1, characterized in that, The front sail is provided with a first rotation axis parallel to the main shaft near its rear end, the rear sail is provided with a second rotation axis parallel to the main shaft near its front end, and the wind power boosting device further includes a connecting member. One end of the connecting member is connected to the first rotation axis, rotatable relative to the first rotation axis and lockable, and the other end is connected to the second rotation axis, rotatable relative to the second rotation axis and lockable.

3. The wind power boosting device with a flow interception plate according to claim 2, characterized in that, In the working state, the windward side of the front sail and the rear sail is the pressure surface, and the angle α formed between the side of the chord line of the front sail facing the pressure surface of the front sail and the side of the chord line of the rear sail facing the pressure surface of the rear sail is 90°-180°. In the folded state, the chord lines of the front sail and the rear sail are parallel.

4. The wind power boosting device with a flow interceptor according to claim 3, characterized in that, In the folded state, the rear sail is parallel to the front sail.

5. The wind power boosting device with a flow interception plate according to claim 1, characterized in that, The ratio of the chord length of the front sail to the chord length of the rear sail is 60:40 to 40:

60.

6. The wind power boosting device with a flow interceptor according to claim 3, characterized in that, In the working state, the windward side of the flow interception plate is the pressure surface, and the angle β formed between the pressure surface of the flow interception plate and the side of the chord line of the rear sail facing the pressure surface of the rear sail is 45°-135°.

7. The wind power boosting device with a flow interception plate according to claim 1, characterized in that, The flow interception plate is rotatable relative to the rear sail and lockable.

8. The wind power boosting device with a flow interception plate according to claim 1, characterized in that, The width of the flow interception plate is 2% to 5% of the chord length of the rear sail.

9. The wind power boosting device with a flow interception plate according to claim 1, characterized in that, The boosting device further includes a base, which includes a first seat body fixed to the hull, a pin shaft connected to the first seat body, a second seat body rotatable about the pin shaft, and a power structure for driving the rotation of the second seat body. The pin shaft is horizontally arranged, and the main shaft is fixed to the second seat body.

10. The wind power boosting device with a throttle plate according to claim 9, characterized in that, The power structure is a hydraulic mechanism or a screw mechanism.

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