Vertical axis wind power generation device without external rotating component

Abstract

The utility model discloses a vertical axis wind power generation device without an external rotating component, and relates to the technical field of wind power generation. A vertical axis wind power generation device without an external rotating component comprises an external cylinder body and an inner guide cylinder, wherein the external cylinder body is of a venturi tube structure, and the inner guide cylinder is embedded in the bottom of the external cylinder body. An air inlet channel communicated with the outside is arranged between the outer cylinder body and the inner guide cylinder; a base and a power generation assembly are further included. The power generation assembly comprises a power generator, a rotating shaft and a first turbine blade. The device can generate power in various breeze environments, is high in power generation efficiency, good in safety and stability and wide in application scene, and has extremely high economic benefits.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a vertical axis wind power generation device without external rotating parts. Background Art

[0002] Wind is one of the pollution-free energy sources. For coastal islands, grassland pastoral areas, mountainous areas and plateau areas that are short of water, fuel and have inconvenient transportation, it is particularly important to utilize wind power generation according to local conditions.

[0003] With the development needs, the demand for the utilization and development of wind energy in rural areas, highway tunnels, transfer areas, service areas, etc. has also increased; for traditional horizontal axis wind turbines, their wind field requirements are high, the noise pollution is large, and the application development is limited. Therefore, it is necessary to develop micro-wind power generation technology that is more environmentally friendly, has higher power generation efficiency, and has a wider range of application scenarios.

[0004] The current conventional wind power generation technology, whether it is a horizontal axis wind turbine or a vertical axis wind turbine, often cannot meet the power generation needs of traditional equipment under the aforementioned special scenario requirements due to the unstable wind field environment, and the power generation efficiency is poor; and most of the existing equipment is equipped with rotating parts such as fan blades located outside, which also poses certain safety hazards. Utility Model Content

[0005] The purpose of the present application is to provide a vertical axis wind power generation device without external rotating parts, which can generate electricity in various breeze environments. The device has high power generation efficiency, good safety and stability, a wide range of application scenarios, and extremely high economic benefits.

[0006] The technical solution of this application is as follows:

[0007] The embodiment of the present application provides a vertical axis wind power generation device without external rotating parts, which includes an external cylinder with a venturi tube structure, and an internal guide cylinder embedded in the bottom of the external cylinder;

[0008] An air inlet passage communicating with the outside is provided between the outer cylinder and the inner guide cylinder;

[0009] It also includes a base and a power generation assembly, and the inner guide cylinder is connected to the base;

[0010] The above-mentioned power generation assembly includes a generator, a rotating shaft and a first turbine blade; the above-mentioned generator is arranged on the above-mentioned base, one end of the above-mentioned rotating shaft is transmission-connected to the above-mentioned generator, and the other end passes through the above-mentioned inner guide cylinder and the above-mentioned outer cylinder in sequence and is located in the above-mentioned outer cylinder; the above-mentioned first turbine blade is sleeved on the above-mentioned rotating shaft and is located in the above-mentioned outer cylinder.

[0011] Furthermore, in some embodiments of the present application, the cross-section of the inner guide tube is trapezoidal and the cross-section of its side wall is an inner arc surface.

[0012] Further, in some embodiments of the present application, the outer cylinder includes a chimney section located at the top, a venturi section located in the middle, and an air inlet section located at the bottom, and the inner diameters of the chimney section and the air inlet section are both larger than the inner diameter of the venturi section;

[0013] The inner guide cylinder is embedded in the air inlet section; the end of the rotating shaft away from the generator is located in the chimney section; the first turbine blade is located in the chimney section and close to the Venturi section.

[0014] Furthermore, in some embodiments of the present application, in the external cylinder, the height of the chimney section is greater than the heights of the Venturi section and the air inlet section.

[0015] Furthermore, in some embodiments of the present application, the outer cylinder is integrally formed.

[0016] Furthermore, in some embodiments of the present application, the power generation assembly further includes a second turbine blade, the second turbine blade being sleeved on the rotating shaft and located above the first turbine blade;

[0017] The diameter of the second turbine blade is larger than that of the first turbine blade.

[0018] Furthermore, in some embodiments of the present application, it also includes a drainage component for draining supply air from the outside to the above-mentioned external cylinder; the side wall of the above-mentioned external cylinder is provided with a supply air nozzle, and the above-mentioned supply air nozzle is connected to the interior of the above-mentioned external cylinder; the above-mentioned drainage component is connected to the above-mentioned supply air nozzle.

[0019] Furthermore, in some embodiments of the present application, the drainage assembly includes an air compressor, and the air compressor is connected to the air supply nozzle through a pipeline.

[0020] Furthermore, in some embodiments of the present application, the drainage assembly further includes a solar module for supplying power to the air compressor, and the solar module is electrically connected to the air compressor.

[0021] Compared with the prior art, the embodiments of the present application have at least the following advantages or beneficial effects:

[0022] In response to the above aspects, an embodiment of the present application provides a vertical axis wind power generation device without external rotating parts, whose structure includes an inner guide cylinder and an outer cylinder that are nested inside and outside, and an air inlet channel is designed between the two. The wind is guided by the inner guide cylinder using lateral wind inlet or turbulent wind inlet, and the wind speed of the introduced wind flow is increased by means of the "Venturi effect" of the external cylinder. At the same time, by virtue of the height of the external cylinder itself and the insulation effect of the device itself, a temperature difference between the air inside and outside the device is generated, and the wind flow is further accelerated through the "chimney effect", and the wind flow that has undergone secondary acceleration is used to drive the first turbine blade to rotate, thereby enabling the generator to generate electricity.

[0023] By performing secondary acceleration on the introduced wind flow, the device can also perform breeze power generation in scenes with poor wind field environment, with high power generation efficiency; the turbine blades in the device are located inside the external cylinder, and there are no other rotating parts set outside, which is safer and more stable. The overall structure of the device is simple, easy to install and construct, suitable for various breeze power generation scenes, and can meet power generation needs even near the ground (20 to 40 meters), with high economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic structural diagram of a vertical axis wind power generation device without external rotating parts provided in the present application;

[0026] Figure 2 This is a schematic structural diagram of another embodiment of a vertical axis wind power generation device without external rotating parts provided in the present application.

[0027] Figure numbers: 1-external cylinder, 101-chimney section, 102-Venturi section, 103-air inlet section, 2-air inlet channel, 3-inner guide cylinder, 4-base, 5-generator, 6-rotating shaft, 7-first turbine blade, 8-second turbine blade, 9-air supply nozzle, 10-air compressor. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "middle", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, it is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the process, method, article or device including its elements.

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0034] The features and performance of the present application are further described in detail below in conjunction with the embodiments.

[0035] Example

[0036] See also Figure 1 The embodiment of the present application provides a vertical axis wind power generation device without external rotating parts, which includes an external cylinder 1 having a venturi tube structure, and an internal guide cylinder 3 embedded in the bottom of the external cylinder 1;

[0037] An air inlet passage 2 communicating with the outside is provided between the outer cylinder 1 and the inner guide cylinder 3;

[0038] It also includes a base 4 and a power generation assembly, and the inner guide tube 3 is connected to the base 4;

[0039] The above-mentioned power generation assembly includes a generator 5, a rotating shaft 6 and a first turbine blade 7; the above-mentioned generator 5 is arranged on the above-mentioned base 4, one end of the above-mentioned rotating shaft 6 is transmission-connected to the above-mentioned generator 5, and the other end passes through the above-mentioned inner guide cylinder 3 and the above-mentioned outer cylinder 1 in sequence and is located in the above-mentioned outer cylinder 1; the above-mentioned first turbine blade 7 is sleeved on the above-mentioned rotating shaft 6 and is located in the above-mentioned outer cylinder 1.

[0040] In the above embodiment, when the device is working, external wind enters the device from the air inlet channel 2 between the inner guide tube 3 and the outer cylinder 1, and the wind flow enters the outer cylinder 1 under the guidance of the inner guide tube 3, and the structure of the outer cylinder 1 can be regarded as a "Venturi tube". Under the action of the "Venturi effect", the wind flow entering the outer cylinder 1 can be accelerated.

[0041] At the same time, since the outer cylinder 1 has a certain height and the device as a whole has a certain heat insulation effect, a certain temperature difference is generated between the air inside and outside the device, so that the wind flow inside the device can be further accelerated under the action of the "chimney effect", thereby ensuring that its wind speed can fully meet the demand for wind power generation. The doubly accelerated wind flow further contacts the first turbine blade 7, causing the first turbine blade 7 to rotate, and then drives the generator 5 through the shaft 6 to generate electricity.

[0042] Furthermore, in some embodiments of the present application, the cross-section of the inner guide tube 3 is trapezoidal and the cross-section of its side wall is an inner arc surface.

[0043] In the above embodiment, the inner guide tube 3 designed in this way can better guide the wind flow entering the interior of the device.

[0044] Further, in some embodiments of the present application, the outer cylinder 1 includes a chimney section 101 located at the top, a venturi section 102 located in the middle, and an air inlet section 103 located at the bottom, and the inner diameters of the chimney section 101 and the air inlet section 103 are both larger than the inner diameter of the venturi section 102;

[0045] The inner guide tube 3 is embedded in the air inlet section 103 ; the end of the rotating shaft 6 away from the generator 5 is located in the chimney section 101 ; the first turbine blade 7 is located in the chimney section 101 and close to the Venturi section 102 .

[0046] Furthermore, in some embodiments of the present application, in the outer cylinder 1 , the height of the chimney section 101 is greater than the heights of the venturi section 102 and the air inlet section 103 .

[0047] In the above embodiment, the above-mentioned external cylinder 1, which is composed of the above-mentioned chimney section 101, the above-mentioned Venturi section 102 and the above-mentioned air inlet section 103 from top to bottom, can make full use of the structural advantage of its "Venturi tube" to accelerate the wind introduced into the device through the "Venturi effect"; at the same time, it has the above-mentioned chimney section 101 with a relatively high height, and the entire above-mentioned external cylinder 1 has a certain height, so that the "chimney effect" can be used to further accelerate the wind, so that its wind speed can fully drive the above-mentioned first turbine blade 7 to rotate, and fully meet the power generation demand of the above-mentioned generator 5.

[0048] Among them, the above-mentioned outer cylinder 1 structure is integrally formed, which has stronger stability and higher safety in use.

[0049] Furthermore, in some embodiments of the present application, the power generation assembly further includes a second turbine blade 8, and the second turbine blade 8 is sleeved on the rotating shaft 6 and located above the first turbine blade 7;

[0050] The diameter of the second turbine blade 8 is larger than that of the first turbine blade 7 .

[0051] In the above embodiment, by providing the second turbine blades 8, the wind power can be more fully utilized to perform power generation, which helps to further improve the power generation efficiency.

[0052] See also Figure 2 Furthermore, in some embodiments of the present application, it also includes a drainage component for draining supply air from the outside to the above-mentioned external cylinder 1; the side wall of the above-mentioned external cylinder 1 is provided with a supply air nozzle 9, and the above-mentioned supply air nozzle 9 is connected to the interior of the above-mentioned external cylinder 1; the above-mentioned drainage component is connected to the above-mentioned supply air nozzle 9.

[0053] Furthermore, in some embodiments of the present application, the drainage assembly includes an air compressor 10, and the air compressor 10 is connected to the air supply nozzle 9 through a pipeline.

[0054] Furthermore, in some embodiments of the present application, the drainage assembly further includes a solar module (not shown in the figure) for supplying power to the air compressor 10 , and the solar module is electrically connected to the air compressor 10 .

[0055] In the above embodiment, when the working environment of the device is in some extreme conditions, such as the external wind field is weak or unstable, the amount of wind that can be introduced at the start is too small, the wind speed is low, and it is difficult to meet the starting requirements of the generator 5 through structural acceleration, and it is impossible to introduce external wind stably; at this time, the air compressor 10 can be used to actively spray gas into the inside of the device for drainage, meet the initial startup requirements of the device, stabilize the wind field environment inside the device, and thus help the device to stably introduce external wind and smoothly accelerate to meet the continuous power generation needs of the generator 5.

[0056] The air compressor 10 can be powered by the solar module, which is beneficial to energy saving and environmental protection. Specifically, the solar module is a solar panel.

[0057] In summary, the embodiment of the present application provides a vertical axis wind power generation device without external rotating parts, which can double accelerate the introduced wind by utilizing the "Venturi effect" and the "chimney effect", so that the device can also perform breeze power generation in scenes with poor wind field environment, and the power generation efficiency is high; the first turbine blade 7 and the second turbine blade 8 in the device are both located inside the external cylinder 1, and there are no other rotating parts set in the outside, which is safer and has stronger working stability. The overall structure of the device is simple, easy to install and construct, suitable for various breeze power generation scenes, and can also meet the power generation needs in the near-ground (20 to 40 meters) state, with high economic benefits.

[0058] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. A vertical axis wind power generation device without external rotating parts, characterized in that: It includes an outer cylinder with a venturi tube structure, and an inner guide cylinder embedded in the bottom of the outer cylinder; An air inlet passage communicating with the outside is provided between the outer cylinder and the inner guide cylinder; It also includes a base and a power generation assembly, and the inner guide cylinder is connected to the base; The power generation assembly includes a generator, a rotating shaft and a first turbine blade; the generator is arranged on the base, one end of the rotating shaft is transmission-connected to the generator, and the other end passes through the inner guide cylinder and the outer cylinder in sequence and is located in the outer cylinder; the first turbine blade is sleeved on the rotating shaft and is located in the outer cylinder.

2. A vertical axis wind power generation device without external rotating parts according to claim 1, characterized in that: The cross section of the inner guide tube is trapezoidal and the cross section of its side wall is an inner arc surface.

3. A vertical axis wind power generation device without external rotating parts according to claim 1, characterized in that: The outer cylinder comprises a chimney section located at the top, a venturi section located in the middle, and an air inlet section located at the bottom, and the inner diameters of the chimney section and the air inlet section are both larger than the inner diameter of the venturi section; The inner guide cylinder is embedded in the air inlet section; the end of the rotating shaft away from the generator is located in the chimney section; the first turbine blade is located in the chimney section and close to the Venturi section.

4. A vertical axis wind power generation device without external rotating parts according to claim 3, characterized in that: In the outer cylinder, the height of the chimney section is greater than the heights of the Venturi section and the air inlet section.

5. A vertical axis wind power generation device without external rotating parts according to claim 3, characterized in that: The outer cylinder is integrally formed.

6. A vertical axis wind power generation device without external rotating parts according to claim 1, characterized in that: The power generation assembly further includes a second turbine blade, which is sleeved on the rotating shaft and located above the first turbine blade; The second turbine blade has a larger diameter than the first turbine blade.

7. A vertical axis wind power generation device without external rotating parts according to claim 1, characterized in that: It also includes a drainage component for draining supplementary air from the outside into the external cylinder; the side wall of the external cylinder is provided with a supplementary air nozzle, and the supplementary air nozzle is connected to the interior of the external cylinder; the drainage component is connected to the supplementary air nozzle.

8. A vertical axis wind power generation device without external rotating parts according to claim 7, characterized in that: The drainage assembly includes an air compressor, and the air compressor is connected to the air supply nozzle through a pipeline.

9. A vertical axis wind power generation device without external rotating parts according to claim 8, characterized in that: The drainage assembly further includes a solar module for supplying power to the air compressor, wherein the solar module is electrically connected to the air compressor.

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