Wind collection type ducted wind driven generator

Abstract

The utility model relates to a wind-collecting ducted wind driven generator. The wind-collecting ducted wind driven generator is characterized in that an assembled wind-collecting flow guide cover which is integrally umbrella-shaped can greatly increase the wind catching area; the wind energy utilization rate of the front impeller / rear impeller adopting the continuous spiral multi-layer blades is higher; the height of the whole wind generating set is reduced through the measures of the assembly type wind collection flow guide cover, the external generator and the continuous spiral multi-layer blades, so that consumables and cost are reduced; the front impeller / rear impeller of the continuous spiral multi-layer blade replaces an ultra-long special-shaped blade, so that the problems of difficulty in site selection, difficulty in transfer and high logistics cost of a wind power plant can be solved; the control unit executes different operation modes according to the collected wind direction / wind speed data, and in the protection operation mode, the hinged hinged door closes the duct rear lip opening to protect the active protection type duct type wind power generation unit; the arc-shaped protective net and the protective net are respectively arranged in the ducted fan cabin body, so that birds and poultry are better protected, and the ecological influence is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind power generation devices, and relates to a wind-collecting ducted wind turbine. Background Technique

[0002] Wind power generation is a power generation method that converts the rotation of a generator by wind power into electric energy. Wind power is a widely distributed, free, clean, and renewable energy source, which has the advantages of maintaining environmental balance and improving energy utilization efficiency. Conventional wind turbines usually adopt the power generation method of an L-shaped three-blade horizontal axis generator installed at a high elevation; specifically, ① a large-diameter three-blade wind wheel horizontal axis generator is installed at a high elevation, and its overall height is large, resulting in an increase in the consumption of foundation and tower barrel materials and an increase in cost. The transportation of blades (extra-long parts) is difficult / high logistics cost, and the high linear speed at the tip of the rotating blade exposed to the natural environment during operation has a greater ecological impact on birds and animals; ② the wind wheel adopts a single-layer electric drive pitch-changing three-blade structure, and the windward area is small, so the wind-catching ability is poor, that is, the wind energy utilization rate is low; ③ in case of bad weather conditions, generally, physical (generator electronics) brakes are used to forcibly stop the rotation of the large-diameter wind wheel blades to achieve rigid protection against the wind. Therefore, in bad weather conditions, the self-protection ability of the long blades and the electric drive pitch-changing mechanism is poor / easy to be damaged, and once damaged, the repair period is long and the repair cost is high;

[0003] In summary, in the prior art, for the method of implementing wind power generation by a conventional high-elevation installation type L-shaped three-blade horizontal axis wind turbine, the large-diameter three-blade wind wheel generator with a high-elevation installation type exposed structure has large consumption of foundation and tower barrel materials, high cost, difficult transportation of blades (extra-long parts) / high logistics cost, great ecological impact on birds and animals, low wind energy utilization rate of the single-layer electric drive pitch-changing three-blade wind wheel, poor self-protection ability / easy to be damaged of the long blades and the electric drive pitch-changing mechanism in bad weather, and difficult repair. Therefore, how to solve the problems of large consumption of foundation and tower barrel materials, high cost, difficult transportation of blades (extra-long parts) / high logistics cost, great ecological impact on birds and animals, low wind energy utilization rate of the single-layer electric drive pitch-changing three-blade wind wheel, poor self-protection ability / easy to be damaged of the long blades and the electric drive pitch-changing mechanism in bad weather, and difficult repair in the prior art is an urgent technical problem to be solved by those skilled in the art. Summary of the Invention

[0004] To solve the above technical problems, the utility model provides a wind-collecting ducted wind turbine.

[0005] To achieve the above object, the utility model provides the following scheme:

[0006] Specifically, a wind-collecting ducted wind turbine consists of an assembled wind-collecting and guiding cover, an active protection ducted wind power generation unit, and a power transmission and active yaw correction device. Among them, the assembled wind-collecting and guiding cover is assembled by installing a front flange, an arc support arm, and a wind-collecting block together. The active protection ducted wind power generation unit is composed of a ducted fan nacelle, a connecting piece, a T-shaped commutator, a front impeller, a rear impeller, an arc protection net, a conical fairing, a protection net, a T-shaped flange, a generator, a reduction motor, a control unit, connecting cable II, connecting cable III, and a hinged pair of doors. The power transmission and active yaw correction device is composed of a control unit, an electric slewing support turntable, a motor, a wind direction / wind speed detection sensor, a support rod, connecting cable I, a signal cable, a partition board, a conductive slip ring, composite cable I, and composite cable II.

[0007] More specifically, the corresponding positions of the T-shaped commutator are fixedly connected to the corresponding positions on the inner side of the duct of the ducted fan nacelle through connecting pieces respectively; the front impeller is fixedly connected to the front input shaft of the T-shaped commutator, and the rear impeller is fixedly connected to the rear input shaft of the T-shaped commutator; the fixed side of the electric slewing support turntable is fixedly connected to the corresponding position at the upper end of the tower barrel, and the movable side of the electric slewing support turntable is fixedly connected to the corresponding position at the bottom of the ducted fan nacelle; the electric slewing support turntable is driven by its own motor; the flange end of the T-shaped flange is fixedly installed with the flange of the generator, and the other end of the T-shaped flange is fixedly connected to the corresponding position of the ducted fan nacelle; the input shaft of the generator is fixedly connected to the output shaft of the T-shaped commutator; the corresponding parts of the hinged pair of doors are respectively fixedly connected to the corresponding positions at the rear side of the ducted fan nacelle, and the hinged pair of doors are respectively driven by the corresponding reduction motors; a partition board is fixedly arranged at the corresponding position of the tower barrel; one end of the conductive slip ring is fixedly connected to the corresponding connecting piece of the generator, and the other end of the conductive slip ring is fixedly connected to the corresponding position of the partition board; the control unit is fixedly installed at the corresponding position of the generator; an arc protection net is fixedly installed inside the front lip of the duct on the front of the ducted fan nacelle, a conical fairing is fixedly arranged at the corresponding position of the arc protection net, and a protection net is fixedly installed inside the rear lip of the duct on the back of the ducted fan nacelle;

[0008] The overall shape of the assembled wind-collecting and guiding cover is umbrella-shaped; the rear side of the front flange is fixedly connected to the corresponding position at the front end of the ducted fan nacelle, the lower ends of the arc support arms are respectively fixedly installed and connected to the corresponding positions on the outer side of the front flange, the corresponding positions on the front sides of adjacent arc support arms are respectively fixedly connected to the corresponding positions on the back of the wind-collecting block in a mounting manner, and the corresponding positions on the back of the inner arc section of the wind-collecting block are fixedly connected to the corresponding positions on the front side of the front flange in a mounting manner; the front impeller and the rear impeller adopt continuous spiral multi-layer blades.

[0009] The air collecting blocks are made of two different materials and formed by two different processes, namely, the soft film structure type and the rigid plate assembly type, to achieve convenient transportation. One is the process of using an environmentally friendly lightweight soft (waterproof and airtight) film material to form in one piece or to stitch and bond multiple pieces together. The soft film structure type air collecting block is a fan-shaped block with interchangeable / general dimensions. It uses the method of multi-layer folding and packing or rolling and bundling the soft film structure type air collecting blocks to achieve convenient transportation and transfer. The other is to use an integrated aluminum honeycomb panel with low specific gravity and high strength as the main material. The rigid plate assembly type air collecting block is an isosceles trapezoidal block with interchangeable / general dimensions. The integrated aluminum honeycomb panel main material is evenly cut into segmented small isosceles trapezoidal strips along the height direction of the isosceles trapezoidal block for easy packing and transportation. After arriving at the site, the segmented small isosceles trapezoidal strips are seamlessly spliced and re-assembled according to the mold to form the rigid plate assembly type air collecting block.

[0010] The T-shaped commutator is of the bevel gear drive type, and the front input shaft / rear input shaft / output shaft of the T-shaped commutator are all independent drive shafts; the rotation directions of the front input shaft and the rear input shaft of the T-shaped commutator are opposite, that is, the rotation direction of the front impeller is opposite to that of the rear impeller; the center of the duct of the ducted fan nacelle is coaxial with the front input shaft / rear input shaft of the T-shaped commutator and the cone center of the conical fairing; the output shaft of the T-shaped commutator is coaxial with the input shaft of the electric slewing support turntable, the generator, and the slip ring; the left / right double doors of the hinged double doors are symmetrically arranged and are independently driven by the corresponding reduction motors; the outer sides of the left / right double doors of the hinged double doors form an integral arc surface when in the fully closed state.

[0011] One end of the connecting cable Ⅰ is electrically connected to the corresponding terminals of the motor respectively, and the other end of the connecting cable Ⅰ is electrically connected to the corresponding output terminals of the control unit respectively; one end of the connecting cable Ⅱ is electrically connected to the output terminals of the generator respectively, and the other end of the connecting cable Ⅱ is electrically connected to the corresponding input terminals of the control unit respectively; one end of the corresponding connecting cable Ⅲ is electrically connected to the input terminals of the reduction motor respectively, and the other end of the corresponding connecting cable Ⅲ is electrically connected to the corresponding output terminals of the control unit respectively; one end of the signal cable is electrically connected to the corresponding terminals of the wind direction / wind speed detection sensor respectively, and the other end of the signal cable is electrically connected to the corresponding terminals of the control unit respectively; one end of the composite cable Ⅰ is electrically connected to the corresponding terminals of the control unit respectively, and the other end of the composite cable Ⅰ penetrates along the corresponding connectors of the generator and is electrically connected to the corresponding terminals of the slip ring respectively. One end of the composite cable Ⅱ is electrically connected to the corresponding terminals of the slip ring respectively, and the other end of the composite cable Ⅱ is connected to the power grid or other electrical loads.

[0012] This wind-collecting ducted wind turbine is divided into two modes: working operation mode and protective operation mode; the control unit calculates and analyzes the wind speed signals collected in real time by the wind direction / wind speed detection sensor through the signal cable. If the wind speed does not exceed the warning value, the whole machine enters the working operation mode; if the wind speed exceeds the warning value, the whole machine enters the protective operation mode. Its protective operation mode is as follows: First, the control unit controls the reduction motor through the corresponding connecting cable Ⅲ to drive the articulated double doors to close until they stop at a predetermined position and remain locked. At this time, the articulated double doors close the duct rear lip at the back of the ducted fan nacelle. At the same time, under the support and maintenance of the electric slewing bearing turntable and the tower barrel, the control unit calculates and analyzes the wind direction signals collected in real time by the wind direction / wind speed detection sensor through the signal cable. The control unit controls the motor through the connecting cable Ⅰ to drive the active protection ducted wind power generation unit through the electric slewing bearing turntable, and keeps the arc surface side formed by the closed articulated double doors consistent with the wind direction and always maintains smooth yaw correction rotation. At this time, the rotating motion components of the active protection ducted wind power generation unit enter the shutdown protection state, that is, the generator, T-shaped commutator, front impeller, and rear impeller all stop rotating. Its working operation mode is as follows: First, the control unit controls the reduction motor through the corresponding connecting cable Ⅲ to drive the articulated double doors to open until they stop at a predetermined position and remain locked. At this time, the articulated double doors open the duct rear lip at the back of the ducted fan nacelle. At the same time, under the support and maintenance of the electric slewing bearing turntable and the tower barrel, the control unit calculates and analyzes the wind direction signals collected in real time by the wind direction / wind speed detection sensor through the signal cable. The control unit controls the motor through the connecting cable Ⅰ to drive the active protection ducted wind power generation unit through the electric slewing bearing turntable, and keeps the front of the ducted fan nacelle consistent with the wind direction and always maintains smooth yaw correction rotation. The wind collection and diversion cover collects / gathers the airflow, and under the combined action of the conical fairing, the accelerated airflow after collection / gathering is guided through the arc-shaped protective net into the duct of the ducted fan nacelle to push the front impeller and rear impeller to drive the T-shaped commutator and the generator to generate electricity. The airflow after doing work passes through the protective net and is discharged. The electricity generated by the generator is connected to the control unit through the connecting cable Ⅱ for technical processing, and then is connected to the power grid or other electrical loads through the composite cable Ⅰ, slip ring, and composite cable Ⅱ.

[0013] The utility model has achieved the following technical effects compared with the prior art:

[0014] A wind-collecting ducted wind turbine of the utility model is composed of an assembled wind-collecting and guiding cover, an active protection type ducted wind power generation unit, a power transmission and an active yaw correction device; the assembled wind-collecting and guiding cover with an overall umbrella shape can greatly increase the wind-catching area of the active protection type ducted wind power generation unit; the front impeller / rear impeller with continuous spiral multi-layer blades realizes a larger windward area and higher wind energy utilization rate; the mechanical energy converted by the front impeller / rear impeller in the duct is output by a T-shaped commutator and transmitted to a generator arranged in the tower barrel space to generate electricity, and the overall aerodynamic performance in the duct is improved; the control unit makes real-time analysis and judgment based on the collected wind direction / wind speed data and executes different operation modes. In the protection operation mode, it will control the hinged double doors to close the rear lip of the duct on the back of the ducted fan nacelle, and then control the electric slewing bearing turntable to keep the arc surface side formed by the hinged double doors consistent with the wind direction and always maintain smooth yaw correction rotation. At this time, the generator, T-shaped commutator, front impeller, and rear impeller of the active protection type ducted wind power generation unit all implement stop protection; arc-shaped protective nets and protective nets are respectively arranged in the front lip of the duct on the front of the ducted fan nacelle and the rear lip of the duct on the back, reducing the ecological impact on birds and animals.

[0015] With such a setting, compared with the method of wind power generation using an L-shaped horizontal axis wind turbine with a large-diameter three-blade wind wheel in a bare structure, for a wind-collecting ducted wind turbine provided by the present utility model, an assembled wind-collecting and guiding cover in an overall umbrella shape can greatly increase the wind-catching area of the active protection ducted wind power generation unit; the front impeller / rear impeller with continuously spiral multi-layer blades can reduce the impeller diameter and have a higher wind energy utilization rate under the condition of a larger windward area; the mechanical energy converted by the front impeller / rear impeller in the duct is output by a T-shaped commutator and transmitted to a generator arranged in the tower barrel space to do work and generate electricity. Without the influence of the generator's outer shape / volume space occupation in the duct, a more optimized aerodynamic performance can be obtained; through technical measures such as the assembled wind-collecting and guiding cover, an external generator, and continuously spiral multi-layer blades, the overall height of the wind turbine generator set can be reduced to achieve a reduction in the material consumption of the foundation and tower barrel and the corresponding cost savings; the front impeller / rear impeller with continuously spiral multi-layer blades replaces the ultra-long special-shaped blades, which can solve the problems of difficult wind farm site selection, difficult transportation, and high logistics costs; the control unit conducts real-time analysis and judgment based on the collected wind direction / wind speed data and executes different operation modes. In the protection operation mode, it will control the hinged double-leaf doors to close the rear lip of the duct on the back of the ducted fan cabin body, and then control the electric slewing bearing turntable to keep the arc surface side formed by the hinged double-leaf doors consistent with the wind direction and always maintain stable yaw correction rotation. At this time, the generator, T-shaped commutator, front impeller, and rear impeller of the active protection ducted wind power generation unit all implement stop protection. During the active protection process, the back of the assembled wind-collecting and guiding cover faces the wind, that is, the outer arc surface guiding effect of the umbrella-shaped structure forms protection for the assembled wind-collecting and guiding cover itself; arc-shaped protective nets and protective nets are respectively arranged in the front lip of the duct on the front of the ducted fan cabin body and the rear lip of the duct on the back to reduce the ecological impact on birds and animals; at the same time, through the guiding / aggregating effect of the assembled wind-collecting and guiding cover on the turbulent airflow of gentle breeze / small wind, the low wind speed starting performance of the active protection ducted wind power generation unit can be improved, and it can more effectively reduce the emission of greenhouse gases such as carbon dioxide, which is beneficial to environmental protection and sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings illustrate exemplary embodiments of the present utility model and, together with the description thereof, are used to explain the principles of the present utility model. These drawings are included to provide a further understanding of the present utility model, and the drawings are included in this specification and form a part of this specification.

[0017] Figure 1 It is a left-view overall structural schematic diagram of the embodiment of the present utility model in the working operation mode;

[0018] Figure 2 It is a front-view overall structural schematic diagram of the embodiment of the present utility model in the working operation mode;

[0019] Figure 3 This is a schematic top view of the overall structure of the embodiment of the present utility model in the working operation mode;

[0020] Figure 4 For the embodiment of the present utility model Figure 1 Schematic enlarged structure diagram of area A therein;

[0021] Figure 5 For the embodiment of the present utility model Figure 1 Schematic enlarged structure diagram of area B therein;

[0022] Figure 6 For the embodiment of the present utility model Figure 2 Schematic enlarged structure diagram of area C therein;

[0023] Figure 7 Electrical schematic diagram of the embodiment of the present utility model;

[0024] Explanation of reference numerals:

[0025] 1 - Duct - type fan nacelle; 2 - Connector; 3 - T - shaped commutator; 4 - Front impeller; 5 - Rear impeller; 6 - Front flange; 7 - Arc - shaped protective net; 8 - Conical fairing; 9 - Protective net; 10 - T - shaped flange; 11 - Tower barrel; 12 - Electric slewing support turntable; 13 - Motor; 14 - Generator; 15 - Partition board; 16 - Arc - shaped support arm; 17 - Air - collecting block; 18 - Conductive slip ring; 19 - Reducing motor; 20 - Wind direction / wind speed detection sensor; 21 - Support rod; 22 - Control unit; 23 - Connecting cable Ⅰ; 24 - Connecting cable Ⅱ; 25 - Connecting cable Ⅲ; 26 - Signal cable; 27 - Composite cable Ⅰ; 28 - Composite cable Ⅱ; 29 - Hinged double - leaf door. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by other technical personnel in the art without making creative efforts belong to the protection scope of the present utility model.

[0027] To make the above - mentioned objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0028] Referring to Figures 1 - 7 as shown, with the arrow direction being forward, a wind - collecting type duct - type wind turbine provided in the embodiment of the present utility model is introduced.

[0029] Specifically, a wind-collecting ducted wind turbine consists of an assembled wind-collecting fairing, an active protection ducted wind power generation unit, and a power transmission and active yaw correction device. Among them, the assembled wind-collecting fairing is composed of a front flange 6, an arc support arm 16, and a wind-collecting block 17 installed and combined together. The active protection ducted wind power generation unit is composed of a ducted fan nacelle 1, a connecting piece 2, a T-shaped commutator 3, a front impeller 4, a rear impeller 5, an arc-shaped protective net 7, a conical fairing 8, a protective net 9, a T-shaped flange 10, a generator 14, a reduction motor 19, a control unit 22, a connecting cable II 24, a connecting cable III 25, and a hinged double-leaf door 29. The power transmission and active yaw correction device is composed of a control unit 22, an electric slewing bearing turntable 12, a motor 13, a wind direction / wind speed detection sensor 20, a support rod 21, a connecting cable I 23, a signal cable 26, a partition 15, a conductive slip ring 18, a composite cable I 27, and a composite cable II 28.

[0030] More specifically, when viewed from the front and left, the corresponding positions of the T-shaped commutator 3 are fixedly connected to the corresponding positions on the inner side of the duct of the ducted fan nacelle 1 through the connecting piece 2 respectively. The front impeller 4 is fixedly connected to the front input shaft of the T-shaped commutator 3, and the rear impeller 5 is fixedly connected to the rear input shaft of the T-shaped commutator 3. The fixed side of the electric slewing bearing turntable 12 is fixedly connected to the corresponding position at the upper end of the tower barrel 11, and the movable side of the electric slewing bearing turntable 12 is fixedly connected to the corresponding position at the bottom of the ducted fan nacelle 1. The electric slewing bearing turntable 12 is driven by its own motor 13. The flange end of the T-shaped flange 10 is fixedly installed with the flange of the generator 14, and the other end of the T-shaped flange 10 is fixedly connected to the corresponding position of the ducted fan nacelle 1. The input shaft of the generator 14 is fixedly connected to the output shaft of the T-shaped commutator 3. The corresponding parts of the hinged double-leaf door 29 are fixedly connected to the corresponding positions at the rear side of the ducted fan nacelle 1 respectively, and the hinged double-leaf door 29 is driven by the corresponding reduction motor 19 respectively. A partition 15 is fixedly arranged at the corresponding position of the tower barrel 11. One end of the conductive slip ring 18 is fixedly connected to the corresponding connecting piece of the generator 14, and the other end of the conductive slip ring 18 is fixedly connected to the corresponding position of the partition 15. The control unit 22 is fixedly installed at the corresponding position of the generator 14. An arc-shaped protective net 7 is fixedly installed on the inner side of the front lip of the duct on the front side of the ducted fan nacelle 1, a conical fairing 8 is fixedly arranged at the corresponding position of the arc-shaped protective net 7, and a protective net 9 is fixedly installed on the inner side of the rear lip of the duct on the rear side of the ducted fan nacelle 1.

[0031] When viewed from the left and top, the overall shape of the assembled air collecting and guiding cover is umbrella-shaped; the rear side of the front flange 6 is fixedly connected to the corresponding position at the front end of the ducted fan nacelle 1, the lower ends of the arc-shaped support arms 16 are respectively fixedly installed and connected to the corresponding positions on the outer side of the front flange 6, the corresponding positions on the front sides of the adjacent arc-shaped support arms 16 are respectively installed and fixedly connected to the corresponding positions on the back of the air collecting block 17, and the corresponding positions on the back of the inner arc section of the air collecting block 17 are installed and fixedly connected to the corresponding positions on the front side of the front flange 6; the front impeller 4 and the rear impeller 5 adopt continuous spiral multi-layer blades.

[0032] The air collecting block 17 is made of two different materials and forming process methods, namely soft film structure type and rigid plate assembly type, to facilitate transportation; one is the process method of one-time forming or multi-piece stitching + bonding using environmentally friendly lightweight soft (waterproof and airtight) film materials. The soft film structure type air collecting block 17 is a fan-shaped block with interchangeable / general dimensions. It realizes convenient transportation and transfer by using the multi-layer folding and packing method or the rolling and bundling method for the soft film structure type air collecting block 17; the other is to use integrated aluminum honeycomb board with light specific gravity / high strength as the main material. The rigid plate assembly type air collecting block 17 is an isosceles trapezoidal block with interchangeable / general dimensions. The integrated aluminum honeycomb board main material is evenly segmented and cut into segmented small isosceles trapezoidal strips along the height direction of the isosceles trapezoidal block for easy packing and transportation. After arriving at the site, the segmented small isosceles trapezoidal strips are seamlessly spliced and re-assembled according to the mold to form the rigid plate assembly type air collecting block 17.

[0033] The T-shaped commutator 3 is of the bevel gear drive type, and the front input shaft / rear input shaft / output shaft of the T-shaped commutator 3 are all independent drive shafts; the rotation directions of the front input shaft and the rear input shaft of the T-shaped commutator 3 are opposite, that is, the rotation direction of the front impeller 4 is opposite to the rotation direction of the rear impeller 5; the center of the duct of the ducted fan nacelle 1 is coaxial with the front input shaft / rear input shaft of the T-shaped commutator 3 and the cone center of the conical fairing 8; the output shaft of the T-shaped commutator 3 is coaxial with the input shafts of the electric slewing support turntable 12, the generator 14, and the conductive slip ring 18; the left / right doors of the articulated double-leaf door 29 are symmetrically arranged and are respectively independently driven by the corresponding reduction motors 19. The outer sides of the left / right doors of the articulated double-leaf door 29 form an integral arc surface when in the fully closed state.

[0034] One end of the connecting cable Ⅰ23 is electrically connected to the corresponding terminals of the motor 13 respectively, and the other end of the connecting cable Ⅰ23 is electrically connected to the corresponding output terminals of the control unit 22 respectively; one end of the connecting cable Ⅱ24 is electrically connected to the output terminals of the generator 14 respectively, and the other end of the connecting cable Ⅱ24 is electrically connected to the corresponding input terminals of the control unit 22 respectively; one end of the corresponding connecting cable Ⅲ25 is electrically connected to the input terminals of the reduction motor 19 respectively, and the other end of the corresponding connecting cable Ⅲ25 is electrically connected to the corresponding output terminals of the control unit 22 respectively; one end of the signal cable 26 is electrically connected to the corresponding terminals of the wind direction / wind speed detection sensor 20 respectively, and the other end of the signal cable 26 is electrically connected to the corresponding terminals of the control unit 22 respectively; one end of the composite cable Ⅰ27 is electrically connected to the corresponding terminals of the control unit 22 respectively, and the other end of the composite cable Ⅰ27 penetrates along the corresponding connectors of the generator 14 and is electrically connected to the corresponding terminals of the slip ring 18 respectively, one end of the composite cable Ⅱ28 is electrically connected to the corresponding terminals of the slip ring 18 respectively, and the other end of the composite cable Ⅱ28 is connected to the power grid or other electrical loads.

[0035] This wind-collecting ducted wind turbine is divided into two modes: working operation mode and protective operation mode; the control unit 22 calculates and analyzes the wind speed signals collected in real time by the wind direction / wind speed detection sensor 20 through the signal cable 26. If the wind speed does not exceed the warning value, the whole machine enters the working operation mode; if the wind speed exceeds the warning value, the whole machine enters the protective operation mode; its protective operation mode is as follows: First, the control unit 22 controls the reduction motor 19 through the corresponding connecting cable III 25 to drive the articulated double-leaf door 29 to close until it stops at a predetermined position and remains locked. At this time, the articulated double-leaf door 29 closes the ducted rear lip of the back of the ducted fan nacelle 1; at the same time, under the support and maintenance of the electric slewing bearing turntable 12 and the tower barrel 11, the control unit 22 calculates and analyzes the wind direction signals collected in real time by the wind direction / wind speed detection sensor 20 through the signal cable 26. The control unit 22 controls the motor 13 through the connecting cable I 23 to drive the active protection ducted wind power generation unit through the electric slewing bearing turntable 12 and keep the arc surface side formed by the closed articulated double-leaf door 29 consistent with the wind direction and always maintain smooth yaw correction rotation. At this time, the rotating motion components of the active protection ducted wind power generation unit enter the shutdown protection state, that is, the generator 14, the T-shaped commutator 3, the front impeller 4, and the rear impeller 5 all stop rotating; its working operation mode is as follows: First, the control unit 22 controls the reduction motor 19 through the corresponding connecting cable III 25 to drive the articulated double-leaf door 29 to open until it stops at a predetermined position and remains locked. At this time, the articulated double-leaf door 29 opens the ducted rear lip of the back of the ducted fan nacelle 1; at the same time, under the support and maintenance of the electric slewing bearing turntable 12 and the tower barrel 11, the control unit 22 calculates and analyzes the wind direction signals collected in real time by the wind direction / wind speed detection sensor 20 through the signal cable 26. The control unit 22 controls the motor 13 through the connecting cable I 23 to drive the active protection ducted wind power generation unit through the electric slewing bearing turntable 12 and keep the front of the ducted fan nacelle 1 consistent with the wind direction and always maintain smooth yaw correction rotation. The wind collection and guiding cover collects / gathers the air flow and, under the combined action of the conical fairing 8, guides the accelerated air flow after collection / gathering through the arc-shaped protective net 7 into the duct of the ducted fan nacelle 1 to push the front impeller 4 and the rear impeller 5 to drive the T-shaped commutator 3 and the generator 14 to generate electricity. The air flow after doing work is discharged through the protective net 9. The electricity generated by the generator 11 is connected to the control unit 22 through the connecting cable II 24 for technical processing and then connected to the power grid or other electrical loads through the composite cable I 27, the slip ring 18, and the composite cable II 28.

[0036] In this specification, specific examples are used to illustrate the principle and implementation of the present utility model. The description of the above embodiments is only for helping to understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

[0037] Those skilled in the art should understand that the above embodiments are only for clearly illustrating the present utility model, rather than limiting the scope of the present utility model. For those skilled in the art, other changes or modifications can be made on the basis of the above disclosure, and these changes or modifications are still within the scope of the present utility model.

Claims

1. A wind-collecting ducted wind turbine, characterized in that: A wind-collecting ducted wind turbine consists of an assembled wind-collecting and guiding cover, an active protection type ducted wind power generation unit, and a power transmission and active yaw correction device. Among them, the assembled wind-collecting and guiding cover is assembled by installing a front flange (6), an arc-shaped support arm (16), and a wind-collecting block (17) together. The active protection type ducted wind power generation unit is composed of a ducted fan nacelle (1), a connecting piece (2), a T-shaped commutator (3), a front impeller (4), a rear impeller (5), an arc-shaped protective net (7), a conical fairing (8), a protective net (9), a T-shaped flange (10), a generator (14), a reduction motor (19), a control unit (22), a connecting cable II (24), a connecting cable III (25), and a hinged double-leaf door (29). The power transmission and active yaw correction device is composed of a control unit (22), an electric slewing bearing turntable (12), a motor (13), a wind direction / wind speed detection sensor (20), a support rod (21), a connecting cable I (23), a signal cable (26), a partition plate (15), a conductive slip ring (18), a composite cable I (27), and a composite cable II (28). Corresponding positions of the T-shaped commutator (3) are fixedly connected to corresponding positions on the inner side of the duct of the ducted fan nacelle (1) through the connecting piece (2). The front impeller (4) is fixedly connected to the front input shaft of the T-shaped commutator (3), and the rear impeller (5) is fixedly connected to the rear input shaft of the T-shaped commutator (3). The fixed side of the electric slewing bearing turntable (12) is fixedly connected to the corresponding position at the upper end of the tower barrel (11), and the movable side of the electric slewing bearing turntable (12) is fixedly connected to the corresponding position at the bottom of the ducted fan nacelle (1). The electric slewing bearing turntable (12) is driven by its own motor (13). The flange end of the T-shaped flange (10) is fixedly installed with the flange of the generator (14), and the other end of the T-shaped flange (10) is fixedly connected to the corresponding position of the ducted fan nacelle (1). The input shaft of the generator (14) is fixedly connected to the output shaft of the T-shaped commutator (3). Corresponding parts of the hinged double-leaf door (29) are fixedly connected to the corresponding positions at the rear side of the ducted fan nacelle (1), and the hinged double-leaf door (29) is respectively driven by the corresponding reduction motor (19). A partition plate (15) is fixedly arranged at the corresponding position of the tower barrel (11). One end of the conductive slip ring (18) is fixedly connected to the corresponding connecting piece of the generator (14), and the other end of the conductive slip ring (18) is fixedly connected to the corresponding position of the partition plate (15). The control unit (22) is fixedly installed at the corresponding position of the generator (14). An arc-shaped protective net (7) is fixedly installed on the inner side of the front lip of the duct on the front side of the ducted fan nacelle (1), a conical fairing (8) is fixedly arranged at the corresponding position of the arc-shaped protective net (7), and a protective net (9) is fixedly installed on the inner side of the rear lip of the duct on the rear side of the ducted fan nacelle (1).

2. The ducted wind turbine of the wind-collecting type according to claim 1, wherein: The overall shape of the assembled air collecting and guiding cover is umbrella-shaped; the rear side of the front flange (6) is fixedly connected to the corresponding position at the front end of the ducted fan nacelle (1), the lower ends of the arc-shaped support arms (16) are respectively fixedly installed and connected to the corresponding positions on the outer side of the front flange (6), the corresponding positions on the front sides of the adjacent arc-shaped support arms (16) are respectively fixedly connected to the corresponding positions on the back of the air collecting block (17) in a mounting manner, and the corresponding position on the back of the inner arc section of the air collecting block (17) is fixedly connected to the corresponding position on the front side of the front flange (6) in a mounting manner.

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