Wind driven generator capable of adjusting wind speed

Abstract

The utility model belongs to the technical field of wind power generation, and particularly relates to a wind driven generator capable of adjusting wind speed. Comprising a wind power assembly used for being blown by wind to rotate; the power generation assembly is rotatably connected to the interior of the shell assembly, the shell assembly comprises a guide part, and the guide part is used for adjusting the area of wind acting on the wind power assembly; the power generation assembly is arranged outside the shell assembly and connected with the shell assembly, and the power generation assembly is driven by the power generation assembly to generate electric energy; the air quantity flowing through the wind power assembly tends to be stable, and stable power generation is achieved; the influence of complex changes of the wind speed on the wind power assembly is reduced, wind power integration difficulty caused by intermittency in the wind power generation process is completely eradicated, the rotating speed of the wind power assembly can be kept stable, and the energy conversion efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of wind power generation technology, concretely relates to a wind speed adjustable wind driven generator. BACKGROUND

[0002] At present, energy shortage and environmental pollution have become two major problems restricting human development, and actively developing and utilizing wind energy resources can alleviate the above problems, wind energy as a kind of renewable and pollution-free clean energy, and after decades of development, wind power technology has become the most mature new energy generation technology in development technology, wind power generation refers to the conversion of wind kinetic energy into mechanical energy, and then the conversion of mechanical energy into electric energy, is the wind wheel under the action of wind force rotates, and the wind kinetic energy is converted into the mechanical energy of wind wheel shaft, and the generator is driven by the wind wheel shaft to generate electricity, which is an important form of wind energy utilization.

[0003] The power output of wind driven generator is proportional to the third power of wind speed, for example, when the wind speed increases from 10 kilometers per hour to 20 kilometers per hour, the power output will increase to 8 times of the original, this nonlinear relationship means that the slight change of wind speed will lead to the significant fluctuation of power generation, for the wind field, the wind speed whether can reach the standard of driving wind driven generator to generate electricity is not the restriction of wind driven generator power generation, but the intermittent nature of wind power generation caused by the complex change of wind speed, which leads to the difficulty of wind power grid connection, and also leads to the instability of generator set speed and reduces the energy conversion efficiency. SUMMARY

[0004] Therefore, the application provides a wind speed adjustable wind driven generator to solve the technical problems that the complex change of wind speed leads to the intermittent nature of wind power generation, the difficulty of wind power grid connection, the instability of generator set speed and the reduction of energy conversion efficiency in the prior art.

[0005] The technical scheme for solving the above technical problems is as follows:

[0006] A wind speed adjustable wind driven generator, comprising:

[0007] A wind force component for being blown by wind to rotate;

[0008] A shell component, the wind force component is rotationally connected in the shell component, and the shell component comprises a guide part for adjusting the area of wind acting on the wind force component;

[0009] A power generation component, which is arranged outside the shell component and connected with the wind force component, and driven by the wind force component to generate electric energy.

[0010] Preferably, the shell assembly comprises a shell with an opening, and an inclined wind collecting plate is arranged at one side of the shell opening and extends towards the wind power assembly in a vertically upward direction; the guide part is arranged at the other side of the shell opening and is inclined; and a funnel-shaped air inlet is formed between the inclined wind collecting plate and the guide part.

[0011] Preferably, an air outlet is arranged at the side of the shell away from the guide part.

[0012] Preferably, the height of the inclined wind collecting plate is consistent with the height of the rotation center of the wind power assembly.

[0013] Preferably, the wind power assembly comprises a driving shaft and a wind wheel fixed on the driving shaft, and the two ends of the driving shaft are connected to the inner wall of the shell through bearings for rotation.

[0014] Preferably, the power generation assembly comprises a speed increasing gear box and a generator, the generator is fixed on the outside of the shell through a base, the speed increasing gear box is connected to the generator, and one end of the driving shaft penetrates through the shell and is connected to the speed increasing gear box.

[0015] Preferably, the guide part comprises a driving mechanism and a plurality of fan blades, the plurality of fan blades are rotationally connected to the inner wall of the shell through fan blade shafts, and the driving mechanism can drive the plurality of fan blades to sequentially form an inclined plane in a head-to-tail manner.

[0016] Preferably, a connecting rod is rotationally connected between the plurality of fan blades, and the driving mechanism drives one of the fan blades to rotate to drive the connecting rod to rotate the other fan blades.

[0017] Preferably, the driving mechanism comprises a telescopic rod and a rectangular sliding block fixed on the telescopic rod, a sliding groove is arranged on the connecting rod, and the telescopic rod is fixed to the shell.

[0018] Compared with the prior art, the application has at least the following advantages:

[0019] The application provides a wind speed adjustable wind power generator, a shell assembly is arranged on a path through which wind flows, wind acts on a wind power assembly to make the wind power assembly rotate, rotation of the wind power assembly drives a power generation assembly to generate power, and in this process, the guide part can be adjusted according to the size of the wind speed to guide the wind, so that the wind power assembly keeps stable rotation; when the wind speed is high, the guide part is used to make part of the wind flow away from the wind power assembly, so as to avoid that the rotation speed of the wind power assembly exceeds a safe range due to too fast wind speed; the amount of wind flowing through the wind power assembly tends to be stable, stable power generation is realized, the influence of complex changes of wind speed on the wind power assembly is reduced, intermittent power generation is avoided to make wind power grid connection difficult, the rotation speed of the wind power assembly can be kept stable, and energy conversion efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Structure diagram of the wind turbine with adjustable wind speed according to the present application;

[0021] Figure 2 Structure diagram of the wind turbine with adjustable wind speed according to the present application from another direction;

[0022] Figure 3 Side view of the wind turbine with adjustable wind speed according to the present application;

[0023] Figure 4 Structure diagram of the connecting rod according to the present application.

[0024] In the figure: Fan blade 101; Fan blade shaft 102; Connecting rod 103; Slide groove 104; Slide block 105; Telescopic rod 106; Shell 201; Inclined wind collecting plate 202; Outlet 203; Driving shaft 301; Wind wheel 302; Speed increasing gear box 401; Generator 402; Base 403. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present application, the present application will be described in more detail below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "left", "right", "top", "bottom", "bottom end", "top end" and the like used herein are for illustrative purposes only and are not intended to be the only implementation.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] Please refer to Figures 1 to 3 , in a specific embodiment of the present application,

[0029] A wind turbine with adjustable wind speed, comprising:

[0030] A wind force assembly for being blown by wind to rotate;

[0031] A housing assembly, the wind power assembly is rotationally connected in the housing assembly, the housing assembly comprises a guide part, the guide part is used for adjusting the area of wind acting on the wind power assembly;

[0032] A power generation assembly, the power generation assembly is arranged outside the housing assembly and connected with the wind power assembly, and generates electric energy driven by the wind power assembly;

[0033] Wherein, the wind power assembly is equivalent to the wind wheel or the device driven by wind in the prior art, the housing assembly can be a support or a box structure housing, and the guide part can be a flat plate or a device for guiding wind in the path of wind flow, and the power generation assembly can be an existing generator or a device for generating electricity by rotation;

[0034] In actual use, the housing assembly is arranged in the path of wind flow, the wind power assembly is rotated by the wind acting on the wind power assembly, and the power generation assembly is driven by the rotation of the wind power assembly to generate electricity, and in this process, the guide part can be adjusted according to the size of the wind speed to guide the wind and change the area range of the wind acting on the wind power assembly. For example, when the wind speed is low, the wind can be guided to the direction of the wind power assembly by the guide part to make the wind flow in the direction of the wind power assembly, so that the wind with small wind speed acts on the wind power assembly in a larger area (that is, the wind acts on the wind power assembly in a larger area), so that the wind power assembly can rotate stably. When the wind speed is high, a part of the wind is guided away from the wind power assembly by the guide part (the area range of the wind acting on the wind power assembly is reduced), so as to avoid the rotation speed of the wind power assembly exceeding the safe range due to the too fast wind speed;

[0035] The amount of wind flowing through the wind power assembly tends to be stable, and stable power generation is realized;

[0036] By the above-mentioned manner, the influence of complex changes of wind speed on the wind power assembly is reduced, intermittent power generation in the process of wind power generation is avoided, and the rotation speed of the wind power assembly can be kept stable, so as to improve the energy conversion efficiency.

[0037] Specifically, an embodiment of the housing assembly in the above process is provided:

[0038] The housing assembly comprises an open shell 201, an inclined wind collecting plate 202 is arranged at one side of the shell opening, the inclined wind collecting plate 202 extends obliquely towards the wind power assembly in the vertically upward direction, the guide part is arranged at the other side of the shell opening 201 and is in an inclined state, and a funnel-shaped air inlet is formed between the inclined wind collecting plate 202 and the guide part;

[0039] In the application, after the shell 201 is erected, the opening of the shell 201 faces the direction of the wind, and the funnel-shaped air inlet (hereinafter referred to as the funnel) formed by the inclined wind collecting plate 202 and the guide part can make the wind flow in. The inclined surface of the inclined wind collecting plate 202 and the guide part can realize the convergence of the wind, so that more range of wind passes through the funnel, and the wind passing through the funnel realizes acceleration, so that the wind speed is improved, thereby powerfully pushing the wind power assembly to rotate. In this process, the guide part can control the amount of wind. When the external wind speed increases, the guide part guides part of the wind away, so that the amount of wind entering the funnel decreases, thereby slowing down the wind speed formed when the wind flows through the funnel, so as to keep the wind speed entering the funnel stable. Similarly, when the external wind speed decreases, the guide part guides more wind to the funnel, so that the wind speed of the wind passing through the funnel is improved.

[0040] Through the above adjustment process, the wind speed passing through the funnel can be regulated, so that the wind speed passing through the funnel tends to be stable, thereby keeping the speed of the wind blowing the wind power assembly stable.

[0041] In addition, in order to ensure the smoothness of the wind flow, the side of the shell 201 away from the guide part is provided with an air outlet 203.

[0042] The wind acting on the wind power assembly can flow out of the shell assembly from the air outlet 203, so that the wind can smoothly pass through the shell assembly to form effective flow.

[0043] In the present application, the wind flow also acts on the position opposite to the rotation direction of the wind power assembly, which is easy to generate resistance during the rotation of the wind power assembly. For example, when the wind power assembly rotates horizontally, the wind passing through the upper half of the rotation center will provide power for the wind power assembly, and the wind located in the lower half of the rotation center will generate resistance to the wind power assembly, which will affect the rotation of the wind power assembly.

[0044] Therefore, the height of the inclined wind collecting plate 202 in the present application is consistent with the height of the rotation center of the wind power assembly.

[0045] That is, the inclined wind collecting plate 202 can guide the wind to the wind power assembly while making the wind flow through the wind power assembly from the upper half of the rotation center of the wind power assembly, so that the wind acts on the upper half of the wind power assembly and does not form resistance to the lower half of the wind power assembly, thereby reducing the influence of the rotation of the wind power assembly.

[0046] Specifically, an embodiment is provided for the wind power assembly in the above process:

[0047] The wind power assembly comprises a driving shaft 301 and a wind wheel 302 fixed on the driving shaft 301, and the two ends of the driving shaft 301 are connected to the inner wall of the shell 201 through bearings to rotate;

[0048] When the wind blows from the outside of the shell 201, the wind can be guided by the inclined wind collecting plate 202 to blow from the upper half of the driving shaft 301, so that the wind acts on the wind wheel 302 moved to the upper half of the driving shaft 301, thereby pushing the wind wheel 302 to drive the driving shaft 301 to rotate, and the driving shaft 301 drives the power generation assembly to generate power.

[0049] Specifically, an embodiment is provided for the power generation assembly in the above process:

[0050] The power generation assembly comprises a speed-increasing gear box 401 and a generator 402, the generator 402 is fixed on the outside of the shell 201 through a base 403, the speed-increasing gear box 401 is connected to the generator 402, and one end of the driving shaft 301 penetrates through the shell 201 and is connected to the speed-increasing gear box 401;

[0051] The driving shaft 301 drives the gears in the speed-increasing gear box 401 to rotate when rotating, and then drives the generator 402 to generate power, in which, the speed-increasing gear box 401 can be selected from the market, and the generator 402 can be a double-fed asynchronous generator.

[0052] Specifically, an embodiment is provided for the guiding part in the above process:

[0053] The guiding part comprises a driving mechanism and a plurality of fan blades 101, the plurality of fan blades 101 are rotationally connected to the inner wall of the shell 201 through fan blade shafts 102, and the driving mechanism can drive the plurality of fan blades 101 to sequentially abut to form an inclined plane;

[0054] The driving mechanism drives the plurality of fan blades 101 to sequentially abut to form an inclined plane (the plane cooperates with the inclined wind collecting plate 202 to form a funnel at the opening of the shell 201), so that the inclined plane formed by the plurality of fan blades 101 can guide the wind to the funnel when the wind speed is low; when the wind speed is high, the driving mechanism drives the plurality of fan blades 101 to open, so that the plurality of fan blades 101 no longer form a plane, and the plurality of fan blades 101 rotate independently to form a “louver” form, so that the plurality of fan blades 101 guide the wind upward after rotating in an inclined state, so that the plurality of fan blades 101 incline upward when the inclined wind collecting plate 202 inclines upward to guide the wind, so that the guiding part no longer guides the wind to the direction of the funnel, but allows part of the wind to pass above the wind power assembly without acting on the wind power assembly, thereby reducing the amount of wind acting on the wind power assembly,

[0055] Through the above-mentioned mode, the wind amount acting on the wind power assembly can be effectively controlled, and the wind power assembly can be stably operated when the wind speed changes.

[0056] Further, in order to synchronously adjust the plurality of fan blades 101, a connecting rod 103 is rotationally connected between the plurality of fan blades 101, and the driving mechanism drives one of the fan blades 101 to rotate to drive the connecting rod 103 to rotate the other fan blades 101 together.

[0057] The driving mechanism drives one of the fan blades 101 to rotate, so that the fan blade 101 drives the connecting rod 103 to move, and the connecting rod 103 drives the other fan blades 101 connected thereto to rotate together, thereby realizing synchronous rotation of the plurality of fan blades 101 and meeting the effect of simultaneous adjustment.

[0058] That is, simultaneous adjustment of the plurality of fan blades 101 can be realized by using one driving mechanism, and the number and cost of power mechanisms can be reduced.

[0059] Specifically, an embodiment of the driving mechanism is provided as follows:

[0060] The driving mechanism includes a telescopic rod 106 and a rectangular sliding block 105 fixed on the telescopic rod 106, and a sliding groove 104 is formed in the connecting rod 103, and the telescopic rod 106 is fixed to a housing 201.

[0061] The telescopic rod 106 can be a hydraulic cylinder or an air cylinder, or an electric telescopic rod.

[0062] During use, the telescopic rod 106 is started to drive the rectangular sliding block 105 to move, and the moving direction of the sliding block 105 is the direction of approaching and moving away from the fan shaft 102, so that the sliding block 105 drives the connecting rod 103 to approach and move away from the fan shaft 102. In this process, the connecting rod 103 can be adaptively displaced on the sliding block 105 in a direction perpendicular to the moving direction of the sliding block 105 under the limitation of the fan blade 101, so as to realize an arc-shaped moving track of the connecting rod 103, thereby driving the other fan blades 101 connected to the connecting rod 103 to rotate together and complete the common adjustment.

[0063] In normal state, the connecting rod 103 drives the plurality of blades 101 to sequentially connect end to end to form a plane, at this time the plane forms a funnel with the inclined wind collecting plate 202, which can realize the convergence of wind, guide the wind in the shell 201 to the funnel, and accelerate the wind through the funnel to increase the wind speed, thereby strongly pushing the wind power assembly to rotate. When the external wind speed increases, the telescopic rod 106 drives the connecting rod 103 to move away from the blade shaft 102, so that the plurality of blades 101 rotate to open, so that the plurality of blades 101 no longer form a plane, but are parallel to each other, so that the wind blowing from the plurality of blades 101 is no longer gathered towards the position of the funnel, but flows over the wind wheel 302 and no longer acts on the wind wheel 302, thereby reducing the amount of wind acting on the wind wheel 302. By using the form of high wind speed and small wind amount acting on the wind wheel 302, the wind wheel 302 can maintain stable rotation, avoiding the problem that the wind wheel 302 rotates at a high speed when the wind speed increases and the wind amount does not change. On the contrary, when the wind speed decreases, the plurality of blades 101 form a plane again to converge the wind to the wind wheel 302, avoiding the wind wheel 302 rotating at a low speed.

[0064] Through the mutual conversion between the two forms in the above process, the wind acting on the wind wheel 302 can be adjusted in time according to the change of the external wind speed, so that the wind wheel 302 can rotate stably.

[0065] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A wind turbine generator with adjustable wind speed, characterized in that, include: Wind turbine components are used to rotate when blown by the wind; A housing assembly, wherein the wind power component is rotatably connected to the housing assembly, the housing assembly including a guide portion for adjusting the area of ​​wind acting on the wind power component; The guide section includes a drive mechanism and multiple fan blades. The multiple fan blades are rotatably connected to the inner wall of the housing via fan blade shafts. The drive mechanism can drive the multiple fan blades to connect end to end in sequence to form an inclined plane. A power generation component, which is disposed outside the housing component and connected to the wind turbine component, and is driven by the wind turbine component to generate electrical energy; The outer casing assembly includes a casing with one side open. An inclined wind-gathering plate is provided on one side of the casing opening. In the vertical upward direction, the inclined wind-gathering plate extends inclinedly toward the wind power assembly. The guide portion is provided on the other side of the casing opening and is in an inclined state. A funnel-shaped air inlet is formed between the inclined wind-gathering plate and the guide portion.

2. The wind turbine with adjustable wind speed as described in claim 1, characterized in that, An air outlet is provided on the side of the housing opposite to the guide portion.

3. The wind turbine with adjustable wind speed as described in claim 1, characterized in that, The height of the inclined wind-gathering plate is the same as the height of the rotation center of the wind turbine component.

4. The wind turbine with adjustable wind speed as described in claim 1, characterized in that, The wind power component includes a drive shaft and a wind turbine fixed on the drive shaft. The two ends of the drive shaft are connected to the inner wall of the housing through bearings for rotation.

5. The wind turbine with adjustable wind speed as described in claim 1, characterized in that, The power generation component includes a speed-increasing gearbox and a generator. The generator is fixed to the outside of the housing via a base. The speed-increasing gearbox is connected to the generator, and one end of the drive shaft extends out of the housing and is connected to the speed-increasing gearbox.

6. The wind turbine with adjustable wind speed as described in claim 1, characterized in that, A connecting rod is rotatably connected between the multiple fan blades, and the drive mechanism drives one of the fan blades to rotate, thereby driving the connecting rod to make the other fan blades rotate together.

7. The wind turbine generator with adjustable wind speed as described in claim 1, characterized in that, The driving mechanism includes a telescopic rod and a rectangular slider fixed on the telescopic rod. A groove is provided on the connecting rod, and the telescopic rod is fixed to the housing.

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