Half-wind-shielding double-wind-facing wind power generation equipment

Abstract

The invention provides half-wind-shielding double-wind-facing wind power generation equipment which comprises a base fixedly arranged and connected with a bottom plate through a rotating bearing. The generator is installed on the bottom plate, and a speed-increasing box is arranged in front of the generator in a transmission mode. The main rod is fixedly installed on the upper portion of the base and arranged in the middle, and the auxiliary rod is installed on the bottom plate and rotationally connected with the main rod. A wind shield is arranged at the lower half part of each wind wheel mechanism, each wind wheel mechanism comprises more than three fan blades, and a central shaft of each wind wheel mechanism is in transmission connection with a generator through a speed increasing box; the wind speed and direction sensor is installed on the main rod, and the active wind facing mechanism is installed on the bottom plate and the base and can adjust the windward angle of the wind shield and the fan blades according to data transmitted by the wind speed and direction sensor. The tail vane adjusting mechanism can drive the auxiliary rod to rotate under wind power driving, and the tail vane can be retracted and released. The rotary wind resistance of the lower portion of the fan blade can be reduced, the windward area is increased, the windward angle is adjusted, and therefore the wind power generation efficiency is greatly improved under the condition that the length of the fan blade is not increased.

Description

Technical Field

[0001] The present invention generally relates to the field of wind power generation, and in particular to a wind power generation device capable of partially shielding and adjusting the posture in real time. Background Art

[0002] At present, large wind turbines on the market are mainly three-blade horizontal axis wind turbines, including direct drive, semi-direct drive, double-fed and other types. The problems are as follows:

[0003] 1. Since the direction of wind blowing is perpendicular to the direction of rotation of the fan blades, it is only a component of the wind that is captured, which is a marginal effect, low efficiency, and a large waste of wind energy.

[0004] 2. The high power of wind turbines means that the blades are getting longer and longer, some of which have reached more than 100 meters in length. The workload in design, manufacturing, transportation and installation is very large. It is not easy for vehicles to turn during transportation, and some drivers accidentally insert the blades through the mountain and damage them.

[0005] 3. The streamlined curved surface shape of the fan blade has high requirements on manufacturing design, high cost and slow production cycle.

[0006] 4. The slender leaf tips are easier to break.

[0007] 5. In addition, the three fan blades need to achieve dynamic balance when rotating. Once a fan blade has a problem, such as ice or partial breakage or other mass changes, the impeller will be unbalanced and cannot work normally.

[0008] Therefore, how to reduce wind resistance and increase the windward surface, thereby significantly improving wind power generation efficiency without increasing the length of the wind blades, is a technical problem that needs to be solved urgently. Summary of the invention

[0009] A main purpose of the present invention is to overcome at least one defect of the above-mentioned prior art and to provide a semi-wind-shielded double-wind-facing wind power generation equipment that can reduce wind resistance, increase the windward surface, and thus greatly improve the wind power generation efficiency without increasing the length of the wind blades.

[0010] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0011] According to one aspect of the present invention, there is provided a semi-wind-shielded double-wind-facing wind power generation device, comprising:

[0012] A base, the base is fixedly arranged and connected to the bottom plate via a rotating bearing;

[0013] A generator, the generator is mounted on the bottom plate, and a speed increasing box is provided in front of the generator;

[0014] A main rod and a secondary rod, wherein the main rod is fixedly mounted on the upper part of the base and arranged in the center, and the secondary rod is mounted on the bottom plate and rotatably connected to the main rod;

[0015] Wind wheel mechanisms, there are more than two wind wheel mechanisms, all of which are arranged between the main rod and the auxiliary rod, a wind shield is arranged at the lower half of the wind wheel mechanism, each of the wind wheel mechanisms includes more than three wind blades, and the central axis of the wind wheel mechanism is connected to the generator through the speed increaser;

[0016] A wind direction adjustment system, the wind direction adjustment system includes a wind speed and direction sensor, an active wind-facing mechanism and a tail rudder adjustment mechanism, the wind speed and direction sensor is installed on the main pole, the active wind-facing mechanism is installed on the bottom plate and the base, and can adjust the windward angle of the wind deflector and the wind blades according to the data transmitted by the wind speed and direction sensor; the tail rudder adjustment mechanism includes a tail wing and a tail rod, the tail wing is installed on the tail rod, the tail rod is connected to the auxiliary rod, and can drive the auxiliary rod to rotate under the drive of wind force, and the tail wing can be retracted and extended.

[0017] According to one embodiment of the present invention, when the power generation equipment is in a power generation state, the wind wheel mechanism and the tail wing are on the leeward side, the wind shield blocks the wind blades from facing the wind, and a ladder is provided on the side of the main rod away from the auxiliary rod.

[0018] According to one embodiment of the present invention, the main rod is in a stepped cylindrical shape, and the diameter of the cylinder decreases from bottom to top.

[0019] According to one embodiment of the present invention, the secondary rod is connected to the main rod via two transverse plates, the two transverse plates are installed at the steps of the main rod via transverse plate bearings, the other ends of the two transverse plates are connected to the secondary rod, and the center axis is passed through the two transverse plates.

[0020] According to one embodiment of the present invention, a wind shield beam parallel to the central axis is fixedly installed above the two horizontal plates, and the wind shield plate is fixedly connected to the wind shield beam. The wind shield plate is arc-shaped and blocks the lower half of the wind wheel mechanism. The wind shield plate extends downward beyond the tip of the wind blade and extends upward beyond the center of the rotating circle of the wind blade.

[0021] According to an embodiment of the present invention, the end of the central shaft is connected to a sprocket, and the sprockets are connected in series in sequence left and right through a transmission chain, and the terminal is connected to the generator.

[0022] According to an embodiment of the present invention, the main rod and the tail rod are movably connected via a tail rudder bearing, and the tail wing is connected to the tail rod and rotates around the main rod along with the tail rod.

[0023] According to an embodiment of the present invention, the tail rod is connected to the auxiliary rod via an adjustment mechanism so that the tail rod itself rotates to achieve the retraction and extension of the tail wing.

[0024] According to one embodiment of the present invention, the active wind-facing mechanism includes a wind-facing motor, a driving gear, a gear ring, a rotating bearing and a controller. The gear ring is installed on the outer side of the top of the base. The wind-facing motor is transmission-connected to the driving gear and meshes with the gear ring. The rotating bearing is an integrated special structure that can withstand forces in the horizontal and vertical two-dimensional directions.

[0025] According to one embodiment of the present invention, the wind speed and direction sensor includes a wind speed sensor and a wind direction sensor, which are arranged at the top of the main pole, and the controller is communicatively connected to the wind speed and direction sensor; when the measured wind speed exceeds the rated wind speed, the tail wing is folded and the wind wheel mechanism is rotated to a side windward state.

[0026] It can be seen from the above technical solution that the advantages and positive effects of the semi-wind-shielded double-wind-facing wind power generation equipment of the present invention are:

[0027] In the present invention, the lower part of the fan blade is shielded by a wind shield, and the upper part of the fan blade is made to face the wind by adjusting the posture, which can reduce the rotation wind resistance of the lower part of the fan blade, increase the windward area and adjust the windward angle, thereby greatly improving the wind power generation efficiency without increasing the length of the fan blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are merely exemplary illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always refer to the same or similar parts. Among them:

[0029] Figure 1 It is a schematic diagram of the main structure of the semi-wind-shielded and double-wind-facing wind power generation equipment of the present invention.

[0030] Figure 2 It is a side structural schematic diagram of a semi-wind-shielded double-wind-facing wind power generation device of the present invention.

[0031] Figure 3 It is a schematic diagram of a partial connection structure of a semi-wind-shielded double-wind-facing wind power generation device of the present invention.

[0032] Figure 4 yes Figure 1 Schematic diagram of the AA structure in .

[0033] Figure 5 The present invention is a schematic diagram of the wind shield arrangement structure in a semi-wind shielding and double-wind facing wind power generation equipment.

[0034] Figure 6 The invention discloses a schematic diagram of the structure of a tail rudder adjustment mechanism in a semi-wind-shielded and double-wind-facing wind power generation device. DETAILED DESCRIPTION

[0035] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0036] In the following description of different examples of the present invention, reference is made to the accompanying drawings, which form a part of the present invention and in which different exemplary structures, systems and steps that can implement multiple aspects of the present invention are shown by way of example. It should be understood that other specific schemes of components, structures, exemplary devices, systems and steps can be used, and structural and functional modifications can be made without departing from the scope of the present invention. Moreover, although the terms "top", "bottom", "front", "rear", "side", etc. may be used in this specification to describe different exemplary features and elements of the present invention, these terms are used herein only for convenience, such as according to the direction of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the present invention.

[0037] Figure 1 It is a schematic diagram of the main structure of the semi-wind-shielded and double-wind-facing wind power generation equipment of the present invention.

[0038] Figure 2 It is a side structural schematic diagram of a semi-wind-shielded double-wind-facing wind power generation device of the present invention.

[0039] Figure 3 It is a schematic diagram of a partial connection structure of a semi-wind-shielded double-wind-facing wind power generation device of the present invention.

[0040] Figure 4 yes Figure 1 Schematic diagram of the AA structure in .

[0041] Figure 5 The present invention is a schematic diagram of the wind shield arrangement structure in a semi-wind shielding and double-wind facing wind power generation equipment.

[0042] Figure 6 The invention discloses a schematic diagram of the structure of a tail rudder adjustment mechanism in a semi-wind-shielded and double-wind-facing wind power generation device.

[0043] like Figures 1 to 6As shown, the semi-wind-shielded double-wind-facing wind power generation equipment of the present invention is used for outdoor wind power generation, and includes a base 1, a generator 2, a main rod 3 and a secondary rod 4, a wind wheel mechanism 5 and a wind direction adjustment system. Among them, the base 1 is fixedly arranged, connected to the bottom plate 11 through a rotating bearing 12, and the bottom plate 11 can rotate relative to the base 1.

[0044] In this embodiment, the generator 2 is installed on the base plate 11, and a speed increasing box 21 is provided in front of the generator 2 to increase the output speed of the speed increasing box 21 to the rated speed required by the generator 2.

[0045] In this embodiment, the main rod 3 is fixedly mounted on the upper part of the base 1 and arranged in the center, and the auxiliary rod 4 is mounted on the bottom plate 11 and is rotatably connected to the main rod 3. The auxiliary rod 4 can rotate with the bottom plate 11, thereby changing its position relative to the main rod 3.

[0046] In this embodiment, there are more than two wind wheel mechanisms 5, all of which are arranged between the main rod 3 and the auxiliary rod 4. A wind shield 51 is arranged at the lower half of the wind wheel mechanism 5. Each wind wheel mechanism 5 includes more than three wind blades 53. The central axis 52 of the wind wheel mechanism 5 is connected to the generator 2 through the speed increaser 21, so that the rotation of the wind blades 53 drives the central axis 52 to rotate, and then drives the generator 2 to rotate to generate electricity.

[0047] In this embodiment, the wind direction adjustment system includes a wind speed and direction sensor 8, an active wind-facing mechanism 6, and a tail rudder adjustment mechanism 7. Among them, the wind speed and direction sensor 8 is installed on the main rod 3 to detect wind speed and wind direction. The active wind-facing mechanism 6 is installed on the bottom plate 11 and the base 1, and can adjust the windward angle of the wind deflector 51 and the wind blade 53 according to the data transmitted by the wind speed and direction sensor 8. The tail rudder adjustment mechanism 7 includes a tail wing 72 and a tail rod 71. The tail wing 72 is installed on the tail rod 71. The tail rod 71 is connected to the auxiliary rod 4 and can drive the auxiliary rod 4 to rotate under the drive of wind force. The tail wing 72 can be retracted. When the wind speed reaches the set value, the tail rod 71 rotates to make the unfolded surface of the tail wing 72 parallel to the ground, so that it is in a retracted state. In the normal state, the unfolded surface of the tail wing 72 is perpendicular to the ground, driving the auxiliary rod 4 against the wind, and assisting the active wind-facing mechanism 6 to adjust the attitude of the wind wheel mechanism 5.

[0048] In this embodiment, when the power generation equipment is in the power generation state, the wind wheel mechanism 5 and the tail wing 72 are on the leeward side because the mass of this side is larger, and the wind shield 51 blocks the wind blades 53 from facing the wind, and the windward direction is shown by the arrow F in the figure. In addition, a ladder 9 is provided on the side of the main rod 3 away from the auxiliary rod 4.

[0049] In this embodiment, the main rod 3 is in a stepped cylindrical shape, and the diameter of the cylinder decreases from bottom to top.

[0050] In this embodiment, the auxiliary rod 4 is connected to the main rod 3 through two transverse plates 55, and the two transverse plates 55 are installed at the step of the main rod 3 through transverse plate bearings 50. The other ends of the two transverse plates 55 are connected to the auxiliary rod 4, and can also be clamped against the auxiliary rod 4. In addition, transverse plate bearing seats 56 are installed on the two transverse plates 55, and the central axis 52 is penetrated through the transverse plate bearing seats 56. The fan blades 53 are symmetrically installed on both sides of the central axis 52, and sprockets 22 are also installed on the central axis 52 on both sides of each fan blade 53.

[0051] In this embodiment, a wind shield beam 54 is fixedly installed above the two horizontal plates 55, the wind shield beam 54 is parallel to the central axis 52, and a wind shield plate 51 is fixedly connected to the wind shield beam 54. In this embodiment, the wind shield plate 51 is arc-shaped, shielding the lower half of the wind wheel mechanism 5, and the distance that the wind shield plate 51 extends downward beyond the tip of the wind blade 53 is equal to one-sixth to one-tenth, for example, one-ninth, of the radius of the rotation circle of the wind blade 53, and the distance that the wind shield plate 51 extends upward beyond the center of the rotation circle of the wind blade 53 is equal to one-third to one-quarter of the radius of the rotation circle of the wind blade 53. The rotation circle of the wind blade 53 is the maximum outer circle formed by the trajectory of the tip of the wind blade 53 when the wind blade 53 rotates. The arc-shaped wind shield plate 51 can divert the flow, which can reduce the wind resistance on the one hand, and increase the wind density received by the wind blades 53 in the adjacent wind wheel mechanism 5 on the other hand.

[0052] In this embodiment, the end of the central shaft 52 is connected to the sprocket 22, and the sprockets 22 are connected in series in sequence through the transmission chain 23, and the terminal is connected to the generator 2 through the speed increase box 21. The sprockets 22 are connected in series through the transmission chain 23, and the upper and lower parts are alternately connected to the left and right to avoid interference. In the last section, the sprocket 22 is set at a position close to the auxiliary rod 4, which is convenient for transmission connection with the speed increase box 21.

[0053] In this embodiment, the main rod 3 and the tail rod 71 are movably connected through the tail rudder bearing 73, and the tail wing 72 is connected to the tail rod 71 and rotates around the main rod 3 with the tail rod 71. During normal power generation, the tail wing 72 is acted upon by wind force, driving the tail rod 71 to rotate in a plane parallel to the horizontal plane. The tail rudder bearing 73 can also cooperate with a friction pair, which can not only ensure the rotation of the tail rod 71, but also prevent the tail rod 71 from leaving the bearing seat of the tail rudder bearing 73.

[0054] In this embodiment, the tail rod 71 is connected to the auxiliary rod 4 through the adjustment mechanism 74, so that the tail rod 71 rotates itself to realize the retraction and deployment of the tail wing 72. When the wind force is too strong, in order to prevent the deployment surface of the tail wing 72 from being damaged by the wind, the adjustment mechanism 74 drives the tail rod 71 to rotate around the axis, and the tail wing 72 changes from vertical to horizontal and is no longer affected by the wind, thereby achieving the purpose of retracting. Otherwise, the tail wing 72 is deployed by the reverse action.

[0055] In this embodiment, the active wind-facing mechanism 6 includes a wind-facing motor 61, a driving gear 62, a gear ring 63, a rotary bearing 12 and a controller (not shown in the figure). Among them, the gear ring 63 is installed on the outer side of the top of the base 1, and the wind-facing motor 61 is connected to the driving gear 62 by transmission, and the driving gear 62 is meshed with the gear ring 63. The rotary bearing 12 is an integrated special structure that can withstand forces in the horizontal and vertical two-dimensional directions. The wind-facing motor 61 is in motion, and the meshing action of the driving gear 62 and the gear ring 63, and the cooperation of the rotary bearing 12 make the bottom plate 11 rotate relative to the base 1, so that the auxiliary rod 4 changes its position relative to the main rod 3, and the wind blade 53 in the wind wheel mechanism 5 faces the windward direction F.

[0056] In this embodiment, the wind speed and direction sensor 8 includes a wind speed sensor 82 and a wind direction sensor 81, both of which are arranged on the top of the main pole 3 through a support seat 83, and the controller is connected to the wind speed and direction sensor 8. When the measured wind speed exceeds the rated wind speed, the tail wing 72 is folded, and the wind rotor mechanism 5 rotates 90 degrees in the horizontal direction to the side facing the wind to avoid damage. When the wind direction changes, the controller sends an action instruction to the wind motor 61 to adjust the windward angle of the wind rotor mechanism 5. At this time, the tail wing 72 can assist the position adjustment action under the action of wind force.

[0057] It can be seen from the above technical solution that the advantages and positive effects of the semi-wind-shielded double-wind-facing wind power generation equipment of the present invention are:

[0058] In the present invention, the lower part of the wind blade 53 is shielded by the wind shield 51, and the upper part of the wind blade 53 is made to face the wind by adjusting the posture, which can reduce the rotation wind resistance of the lower part of the wind blade 53, increase the windward area and adjust the windward angle, thereby greatly improving the wind power generation efficiency without increasing the length of the wind blade 53.

[0059] The wind power generation equipment of the present invention has a simple structure of the fan blades 53, which is easy to manufacture and adopts lightweight materials such as glass fiber reinforced plastic resin that is not prone to rust and corrosion. There is no slender fan blade structure, which is also very convenient and time-saving in transportation. When the wind power generation equipment is working, the fan blades 53 face the wind head-on and adopt a structure that blocks half of the fan blades. There is no headwind resistance on the return journey, and the efficiency is good, and the fan blades can be turned with a breeze. An active yaw mechanism is adopted, and an adaptive wind-facing structure is adopted as an auxiliary yaw to save costs. On the one hand, the auxiliary rod 4 strengthens the overall structural strength support, and on the other hand, it also assists in realizing the wind-facing function of the wind wheel mechanism 5. The wind power generation equipment of the present invention can also increase the power generation capacity of the wind turbine in proportion by increasing the size of the fan blades 53 in the wind wheel mechanism 5 by increasing the height and width of the fan blades 53.

[0060] Those skilled in the art should understand that the specific structures and processes shown in the above specific embodiments are only exemplary and not restrictive. Moreover, those skilled in the art can combine the various technical features shown above in various possible ways to form new technical solutions, or make other changes, which are all within the scope of the present invention.

Claims

1. A semi-wind-shielded double-wind-facing wind power generation equipment, characterized in that: include: A base, the base is fixedly arranged and connected to the bottom plate via a rotating bearing; A generator, the generator is mounted on the bottom plate, and a speed increasing box is provided in front of the generator; A main rod and a secondary rod, wherein the main rod is fixedly mounted on the upper part of the base and arranged in the center, and the secondary rod is mounted on the bottom plate and rotatably connected to the main rod; Wind wheel mechanisms, there are more than two wind wheel mechanisms, all of which are arranged between the main rod and the auxiliary rod, a wind shield is arranged at the lower half of the wind wheel mechanism, each of the wind wheel mechanisms includes more than three wind blades, and the central axis of the wind wheel mechanism is connected to the generator through the speed increaser; A wind direction adjustment system, the wind direction adjustment system includes a wind speed and direction sensor, an active wind-facing mechanism and a tail rudder adjustment mechanism, the wind speed and direction sensor is installed on the main pole, the active wind-facing mechanism is installed on the bottom plate and the base, and can adjust the windward angle of the wind deflector and the wind blades according to the data transmitted by the wind speed and direction sensor; the tail rudder adjustment mechanism includes a tail wing and a tail rod, the tail wing is installed on the tail rod, the tail rod is connected to the auxiliary rod, and can drive the auxiliary rod to rotate under the drive of wind force, and the tail wing can be retracted and extended.

2. The semi-wind-shielded double-wind-facing wind power generation equipment according to claim 1, characterized in that: When the power generation equipment is in a power generation state, the wind wheel mechanism and the tail wing are on the leeward side, the wind shield blocks the wind blades from facing the wind, and a ladder is provided on the side of the main rod away from the auxiliary rod.

3. The semi-wind-shielded double-wind-facing wind power generation equipment according to claim 1, characterized in that: The main rod is in a stepped cylindrical shape, and the diameter of the cylinder decreases from bottom to top.

4. The semi-wind-shielded double-wind-facing wind power generation equipment according to claim 3, characterized in that: The auxiliary rod is connected to the main rod through two transverse plates, the two transverse plates are installed at the steps of the main rod through transverse plate bearings, the other ends of the two transverse plates are connected to the auxiliary rod, and the central axis is passed through the two transverse plates.

5. The semi-wind-shielded double-wind-facing wind power generation equipment according to claim 4, characterized in that: A wind shield beam parallel to the central axis is fixedly installed above the two horizontal plates, and the wind shield plate is fixedly connected to the wind shield beam. The wind shield plate is arc-shaped and blocks the lower half of the wind wheel mechanism. The wind shield plate extends downward beyond the tip of the wind blade and upward beyond the center of the wind blade's rotating circle.

6. The semi-wind-shielded double-wind-facing wind power generation equipment according to claim 1, characterized in that: The end of the central shaft is connected to a sprocket, and the sprockets are connected in series in sequence left and right through a transmission chain, and the terminal is connected to the generator.

7. The semi-wind-shielded double-wind-facing wind power generation equipment according to claim 1, characterized in that: The main rod and the tail rod are movably connected via a tail rudder bearing, and the tail wing is connected to the tail rod and rotates around the main rod along with the tail rod.

8. The semi-wind-shielded double-wind-facing wind power generation equipment according to claim 7, characterized in that: The tail rod is connected to the auxiliary rod through an adjusting mechanism so that the tail rod itself rotates to realize the retraction and extension of the tail wing.

9. The semi-wind-shielded double-wind-facing wind power generation equipment according to claim 1, characterized in that: The active wind-facing mechanism includes a wind-facing motor, a driving gear, a gear ring, a rotating bearing and a controller. The gear ring is installed on the outer side of the top of the base. The wind-facing motor is transmission-connected to the driving gear and meshes with the gear ring. The rotating bearing is an integrated special structure that can withstand forces in the horizontal and vertical two-dimensional directions.

10. The semi-wind-shielded double-wind-facing wind power generation equipment according to claim 9, characterized in that: The wind speed and direction sensor comprises a wind speed sensor and a wind direction sensor, which are arranged at the top of the main pole, and the controller is communicatively connected to the wind speed and direction sensor; when the measured wind speed exceeds the rated wind speed, the tail wing is folded and the wind wheel mechanism is rotated to a side windward state.

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