WO2011156949A1 - Ducted-type wind generator - Google Patents

Abstract

A ducted-type wind generator comprises a windmill, a motor drive system and a ducted-type wind generating device. The windmill has a windmill shaft (1) and blades (2) mounted on the windmill shaft. The motor drive system is mounted on a motor frame (19) and connected to the windmill shaft. The motor drive system revolves the windmill shaft (1) so as to rotate the windmill when it is no wind or insufficient wind. The ducted-type wind generating device is mounted on the windmill shaft and generates power by use of the combined wind produced by the rotation of the windmill shaft. The generator is an active wind generator, and the revolutions of the windmill remain constant whenever it is strong wind or weak wind, so the efficiency of power generation is high and electric energy is stable.

Description

 Ducted wind turbine

Technical field

 The present invention relates to the field of wind power generation, and more particularly to a ducted wind power generator that installs a wind power generator on a windmill, uses a high speed rotation of the windmill to wind, and artificially controls the speed of the windmill and adjusts the wind energy flow.

Background technique

 At present, the investment per kW of wind turbines ranges from 8,000 to 10,000 yuan, while the investment of a 50,000 KW wind farm is about 400-500 million yuan, and the investment recovery period is more than 10 years. The cost of this expensive equipment is 2000-2300 hours per year, and the working load of the unit is only about 25%. The rest of the time is in the shutdown state. Because this kind of equipment can only generate electricity at full speed when the wind speed reaches 11-12m/s, and the wind speed exceeds 25m/s, it also has to stop. This is low for the wind farm investors. , the payback period is long. The size of the wind and the time of the incoming wind are uncertain, causing the wind turbine to stop when it is launched, which has a great impact on the grid.

Summary of the invention

 The object of the present invention is to overcome the problems of the prior art described above, and to provide a ducted wind power generator, which is installed on a windmill by using a ducted wind power generation device, and uses aerodynamic force to drive the windmill to rotate, and the ducted wind power generation device The wind turbine is rotated together to generate electricity. At the same time, the ducted wind turbine is an active wind turbine. The windmill has a constant number of revolutions, high power generation efficiency and stable power, whether the wind is large or the wind is small. The impact on the grid is small.

 The following technical solutions are provided for the purpose of achieving the present invention:

 A ducted wind power generator comprising: a windmill having a windmill shaft and blades mounted on the windmill shaft; a motor drive system mounted on the frame and connected to the windmill shaft, driven by no wind or insufficient wind The windmill shaft rotates to drive the windmill to rotate; the ducted wind power generator is mounted on the windmill shaft to generate wind power with the rotation of the windmill shaft.

Wherein, the motor drive system is a system having a bidirectional function of motor drive and power generation, comprising: a frame fixed on the base; a bidirectional motor/generator, a gear box, and a fluid coupling respectively fixed on the frame; wherein the two-way The motor/generator is coupled to one end of the gearbox, the other end of the gearbox is coupled to one end of the fluid coupling, and the other end of the fluid coupling is coupled to the windmill shaft. The ducted wind power generation device comprises: a cross arm mounted on the windmill shaft, wherein a base extending perpendicular to the cross arm is fixed thereon; the duct is fixed at one end of the base and extends along the base a wind wheel device, installed in the duct, having a wind wheel shaft and a wind wheel mounted on the wind wheel shaft; the generator, fixed at the other end of the machine base, directly connected to the wind turbine shaft, or via a hydraulic torque converter or via a torque converter The speed mechanism is coupled to the wind turbine shaft for power generation by the wind turbine assembly.

 The ducted wind power generation device comprises: a cross arm mounted on the windmill shaft, and a base extending along the cross arm is fixed thereon; the duct is fixed on the outer side of the base and extends along the base; L"-shaped air duct, one end of which is connected to the outer side of the duct, and the other end is oriented toward the incoming flow direction; the wind wheel device is installed in the duct, and has a wind wheel shaft and a wind wheel mounted on the wind wheel shaft; the generator is fixed at The inside of the base is directly connected to the wind turbine shaft, or is connected to the wind turbine shaft via a torque converter or via a speed increasing mechanism to generate electricity under the driving of the wind turbine device.

 In particular, the wind wheel device further includes: a wind turbine shaft bracket, the two ends of which are fixedly connected to the ducts respectively, wherein a bearing box is disposed in the middle portion; the wind turbine shaft passes through the bearing box and the generator or the hydraulic force The torque converter or the speed increasing mechanism is connected.

 In particular, the torque converter is provided with a brake assembly, or the brake assembly is mounted on the generator. In particular, a pneumatic streamlined shield is mounted on the outer side wall of the "L" shaped air duct, and the pneumatic streamlined shield includes: a bracket, one end of which is fixed on the leading edge of the "L" shaped air duct, and One end extends outward and is mounted with a rotating shaft, and the upper and lower sides of the bracket are respectively mounted with oil cylinders; the front upper guard and the front lower shroud are respectively supported by the cylinder, and the ends thereof are respectively hinged with the rotating shaft so as to be driven by the cylinder The opening and closing of the front upper guard and the front lower lower guard are realized; the rear upper guard and the rear lower guard are respectively fixed at the tail end of the air guide cylinder.

 In particular, the cross arm has a pneumatic streamline shape, and a pneumatic spoiler is mounted on the leading edge thereof, including: a spoiler bracket, one end of which is fixed on the guiding edge of the cross arm, and the other end is outwardly extended and has a rotating shaft The upper and lower sides of the spoiler bracket are respectively respectively provided with oil cylinders; the upper pneumatic spoiler and the lower pneumatic spoiler are respectively arranged on the upper and lower sides of the spoiler bracket, and are respectively supported by the cylinders, and the ends thereof are respectively The hinge is hinged to open and close the upper pneumatic spoiler and the lower pneumatic spoiler under the driving of the cylinder.

The speed increasing mechanism comprises: a bracket fixed to the base; the driving shaft is mounted on the bracket through the bearing box, connected to one end of the wind wheel shaft, and the driving wheel is mounted on the driving shaft; the driven shaft passes through the bearing box Mounted on the bracket, connected to the generator, the driven wheel is mounted thereon; the transmission belt is set on the driving wheel and the driven wheel to realize the power transmission of the driving wheel to the driven wheel. In particular, the wind wheel may be a single row, or a tandem type, or a coaxial reversal type, or a side-by-side type; the duct may be a diffuser ducted duct, or a collecting ducted duct, or a collector diffusing culvert Road, or straight ducted duct.

 Wherein, the ducted wind power generation device comprises: a cross arm mounted on the windmill shaft, the organic seat is fixed thereon; the duct is mounted on the outer side of the cross arm through the base and extends perpendicular to the cross arm; the wind wheel device is installed In the duct, there is a wind wheel shaft and a wind wheel mounted on the wind wheel shaft; the generator is installed on the inner side of the cross arm through the machine base, placed side by side with the duct, and passes through the chain transmission mechanism or the crank link transmission mechanism and the wind wheel shaft Connected.

 The beneficial effects of the present invention are reflected in the following aspects:

 1. The ducted wind turbine places the wind wheel in the duct on the arm of the vertical axis windmill. The setting of the duct changes the slip flow state downstream of the wind wheel, increases the slip flow area, and reduces the slip flow speed. And the sliding flow energy is lost, so that the kinetic energy behind the rotor paddle is converted into pressure energy more.

 2. The wall of the duct improves the flow characteristics of the tip of the wind turbine and reduces the loss of the tip.

 3. The front edge of the duct inlet forms a large negative pressure zone, which creates an additional pulling force.

 4. Compared with the isolated (conventional) wind wheel, the ducted wind wheel produces a large pulling force at the same diameter at the same power. At the same power, the diameter of the wind wheel required to produce the same pulling force is small.

 5. Under the action of the windmill, the wind speed and wind energy quality can be greatly improved, the diameter of the wind wheel can be greatly reduced, and the speed of the wind wheel is increased by several times than that of the conventional wind wheel, which can save bulky and expensive. The gearbox with high failure rate can directly drive the direct drive synchronous generator, which can greatly reduce the cost, reduce the fault and reduce the weight.

 6. With the cooperation of the windmill and the motor drive system, the ducted wind turbine can achieve stable power generation with large wind and small wind, high productivity and little impact on the power grid.

 7. When the windmill is in the starting state and low wind speed, the motor drive system drives the windmill to rotate. Under the action of the motor and the control system, the speed of the windmill is controllable and rotates at a constant speed. When the wind speed exceeds the rated wind speed, the windmill The thrust and the remaining, the windmill will drive the two-way motor and under the action of the reversing switch and control system, the electric motor becomes the generator and feeds the grid. The motor drive system has the dual functions of electric and power generation.

 8. The annual output of ducted wind turbines is over 6,000 hours, which is 1-2 times of the electricity generated by conventional conventional wind turbines. The cost of kilowatts is about 4,500 yuan, and the investment recovery period is 2-3 years.

DRAWINGS

1 is a schematic structural view of a ducted wind power generator according to a first embodiment of the present invention; Figure 2 is a plan view of Figure 1;

 3 is a schematic structural view of another connection form in a ducted wind power generation device;

 4 is a schematic structural view of a ducted wind power generator according to a second embodiment of the present invention;

 Figure 5 is a plan view of Figure 4;

 6 is a schematic structural view of a transmission belt speed increasing mechanism in a ducted wind power generation device;

 Figure 7 is a cross-sectional view taken along line A - A of Figure 5;

 Figure 8 is a cross-sectional view taken along line B-B of Figure 1;

 9a, 9b, 9c, and 9d are schematic structural views of a duct in the present invention;

 10a, 10b are schematic views showing the structure of a ducted wind power generator according to a third embodiment of the present invention.

 DESCRIPTION OF REFERENCE NUMERALS 1 - windmill shaft; 2-blade; 3-bolt; 4-cross arm; 5-wind wheel; 6-duct; 7-brake assembly; 8-coupling; 9-hydraulic coupling 10-bolt; 11-coupling; 12-gearbox; 13-bolt; 14-coupling; 15-bidirectional motor/generator; 16-base; 17-bolt; 18-bolt; 20-shelf; 21-bearing; 22-pneumatic spoiler; 23-frame; 24-cross arm; 25-bolt; 26-generator; 27-coupling; 28-brake assembly; -Hydraulic torque converter; 30-coupling; 31-windwheel shaft; 32-second group of wind wheels; 33-machine compartment cover; 34-bearing box; 35-bearing box; 36-wind wheel axle bracket; Wind wheel axle bracket; 38-pneumatic streamlined shield; 39- "L" shaped air duct; 38A-front end shield; 38B-rear end shield; 38C-rear lower guard; 38D-front end Shield; 40-drive wheel; 41-drive shaft; 42-bearing box; 43-bracket; 44-coupling; 45-brake assembly; 46-driven shaft; 47-bearing box; 49-tensioning axle; 50-drive belt; 51-driven wheel; 52-tensioner; 53-coupling; 54-shaft 55-bracket; 56-bracket; 57-cylinder; 58- rear bracket; 59-cylinder; 60-bracket; 61-bracket; 62-cylinder; 63-spoiler bracket; 64-shaft; 66-ear; 67-lower pneumatic spoiler; 68-upper pneumatic spoiler; 69-eccentric wheel; 70-curved rod; 71-shaft hole; 72-bolt; 73-link; 74-eccentric 75-curved rod; 76-shaft hole; 77-bolt; 78-main drive wheel, 79-drive belt/drive chain, 80-driven wheel.

Specific implementation form

Embodiment 1

As shown in the structural schematic view of the ducted wind power generator of the present invention, the ducted wind power generator of the present invention comprises: a windmill having a windmill shaft 1 and blades 2 mounted on the windmill shaft 1; a motor drive system, Installed on the frame 19, connected to the windmill shaft 1, when the wind and wind are insufficient, the windmill shaft is driven to rotate by driving the windmill shaft 1; the ducted wind power generator is mounted on the windmill shaft 1 with the windmill shaft 1 of Turn to wind power.

 1 is a schematic view showing the structure of a ducted wind power generator according to the present invention, wherein the windmill shown in the figure is an H-shaped windmill, wherein the windmill has a plurality of blades 2, and each of the blades 2 is a windmill shaft 1 is distributed on both sides of the upper portion of the windmill shaft 1, and each blade is fixedly coupled to the windmill shaft 1 by a plurality of cross arms 24, and each of the blades 2 and the cross arm 24 for mounting the blade 2 constitute "H" "shape.

 Among them, the blade 2 has a pneumatic streamline shape as shown in FIG.

 Windmills can also be umbrella-shaped windmills, or diamond-shaped windmills, or Y-type windmills, or Φ-type windmills, or worm-wheel-type windmills, or S-type windmills, or multi-leaf S-type windmills, or triangular windmills, or Savalios Windmills, or flat-panel windmills, or cup-type windmills, or bicycle-wheel multi-leaf windmills, or other forms of windmills with aerodynamic performance.

 Among them, the motor drive system is a system with two-way function of driving and power generation. As shown in FIG. 1, the motor drive system has a chassis 20 which is fixed on the base 16 by bolts 17. The top of the chassis 20 is fixed with two bearings 21a and 21b distributed upward and downward, and the bottom end of the windmill shaft 1 is sequentially worn. The two bearings 21a, 21b extend downward into the chassis 20 and have a brake assembly 7 mounted thereon. The chassis 20 is internally provided with a frame 19 fixed to the base 16, and a two-way motor/generator 15, a gearbox 12, and a fluid coupling 9 are fixed in the frame 19 from bottom to top, wherein the two-way motor/power generation The machine 15 is connected to one end of the gear box 12 via a coupling 14, the other end of the gear box 12 is connected to one end of the fluid coupling 9 through a coupling 11, and the other end of the fluid coupling 9 is passed through the coupling 8 The bottom ends of the windmill shafts 1 are connected to stably mount the windmill shaft 1 on the chassis 20, and the windmill shaft 1 is freely rotatable relative to the chassis 20.

 When the natural wind speed is small, the motor drive system is used to drag the windmill to rotate, so that the ducted wind power generation device rotates with the windmill shaft 1 at a constant rotation speed, thereby realizing the power generation of the ducted wind power generation device; When the windmill can be driven and the required constant speed is reached, the motor drive system automatically cuts off with the windmill, the motor stops running, and the windmill rotates under the natural wind, thereby driving the ducted wind power generation device with the constant speed of the windmill shaft 1 together. Rotating to realize power generation of the ducted wind power generation device; when the natural wind is large, the thrust of the windmill is greater than the rated load, the electric motor is converted into a generator, and the windmill rotates to drive the generator to generate electricity, and feeds the grid.

As shown in FIGS. 1 and 3, the ducted wind power generation device is mounted on the windmill shaft 1 between the blade 2 and the chassis 20. The ducted wind power generator has a plurality of cross arms 4, one end of which is fixedly mounted on the windmill shaft 1 by bolts 3, respectively, so that the cross arm 4 can rotate together with the windmill shaft 1, and the other end of each cross arm 4 is fixed. There is a base 23 that extends perpendicular to the cross arm 4. A duct 6 is fixed at one end of the base 23, and the duct 6 extends along the base 23, and the wind wheel device is installed therein, and has a wind wheel shaft 31 and a wind wheel 5 and a wind wheel 32 mounted on the wind wheel shaft 31; The other end of the 23 is fixed with an organic cover 33, and a generator 26 is disposed in the casing cover 33. The generator 26 is mounted on the base 23, and is provided with a brake assembly 28, and the generator 26 is coupled to the wind through the coupling 27. The axle 31 is directly connected (shown in FIG. 3), or is connected to the rotor shaft 31 via the torque converter 29 (shown in FIG. 2), or is connected to the rotor shaft 31 via a speed increasing mechanism (shown in FIG. 6) for the wind. When the wheel device rotates, the generator 26 is driven to work.

 As shown in FIG. 2, the torque converter 29 is disposed in the casing cover 33 and is disposed on the frame 23, and the generator 26 is connected to one end of the torque converter 29 through the coupling 27, and the hydraulic force is changed. The other end of the torque device 29 is connected to the wind turbine shaft 31 of the wind turbine device via a coupling 30, and the brake assembly 28 is mounted on the torque converter 29.

 As shown in FIG. 6, the speed increasing mechanism has a bracket 43 fixed to the base 23; the driving shaft 41 is mounted on the upper end of the bracket 43 through the bearing housing 42, and is connected to the wind turbine shaft 31, and the driving wheel 40 is mounted on the driving shaft 41. The driven shaft 46 is mounted on the lower portion of the bracket 43 through the bearing housing 47, and is connected to the generator 26 through the coupling 44. The driven wheel 51 is mounted on the driven shaft 46, and the brake shaft assembly is also mounted on the driven shaft 46. The driving belt 50 is disposed on the driving wheel 40 and the driven wheel 51. When the wind wheel device rotates to drive the wind wheel shaft 31 to rotate, the rotation of the wind wheel shaft 31 drives the driving wheel 40 to rotate, and the rotation of the driving wheel 40 is transmitted to the slave through the transmission belt 50. The moving wheel 51 and the driven wheel 51 rotate to drive the generator 26 to generate electricity.

 The speed increasing mechanism further includes a tensioning axle 49 mounted on the bracket 43 via a bearing housing 48, the tensioning axle 49 being located between the driving shaft 41 and the driven shaft 46, on which the tensioning pulley 52 is mounted. The tension pulley 52 is in contact with the belt 50 to tension the belt 50.

 As shown in Figures 2, 3 and 6, the wind turbine device may further have two wind wheel axle brackets 36, 37 arranged side by side, the two ends of which are respectively fixedly connected with the side walls of the ducts 6, and the middle portions are respectively provided with bearing housings 34, 35. One end of the wind turbine shaft 31 is sequentially connected to the generator 26 (shown in FIG. 3) or the torque converter 29 (shown in FIG. 2) or the speed increasing mechanism (shown in FIG. 6) through the bearing housings 34, 35, and the other One end is equipped with a wind wheel 5 and a wind wheel 32. The two sets of wind wheels are installed in a tandem type, or may be a coaxial reversal type (not shown), or only one set of wind wheels 5 may be installed.

A plurality of bases 23 may be juxtaposed on each of the cross arms 4. Each of the bases 23 extends perpendicularly to the cross arm 4, and one end of each base 23 is fixed to the ducts 6, and the other end is fixed to the machine cover 33. Han Road 6 and machine warehouse The structure inside the cover 33 is the same as that described above to form a plurality of sets of side-by-side wind wheels 5 and/or wind wheels 32.

 When the wind turbine 5 and the wind turbine 32 are mounted in a coaxial reverse mode, the generator 26 is a dual rotor generator. As shown in Figures 2 and 3, when the cross arm 4 is rotated together with the windmill shaft 1, the wind enters the duct 6, so that the wind wheel 5 and the wind wheel 32 of the duct 6 rotate, and the rotation of the wind wheel drives the wind. The axle 31 also rotates together, since the wind turbine shaft 31 is connected to the generator 26 via the torque converter 29, or is connected to the generator 26 via a speed increasing mechanism, or directly to the generator 26, thus causing the generator 26 to also rotate. Thereby, the power generation work of the generator 26 is achieved.

 The ducted road 6 can be a diffuser type ducted duct (as shown in Fig. 9a), or a wind collecting duct (as shown in Fig. 9b), or a wind diffusing duct (as shown in Fig. 9c), or a straight type The duct is shown in Figure 9d.

 Among them, the cross arm 4 and the cross arm 24 have a pneumatic streamline shape. As shown in Fig. 8, a pneumatic spoiler 22 is mounted on the guide sides of the cross arm 4 and the cross arm 24, and the pneumatic spoiler 22 has a spoiler bracket 63, one end of which is fixed to the guide of the cross arm 4 and the cross arm 24. On the side, the other end projects outwardly and is mounted with a rotating shaft 64, and the upper and lower sides of the spoiler bracket 63 are respectively mounted with oil cylinders 62, 65. The upper pneumatic spoiler 68 and the lower pneumatic spoiler 67 are respectively disposed on the upper and lower sides of the spoiler bracket 63, and are respectively supported by the oil cylinders 62, 65, and the ends thereof are respectively hinged with the rotating shaft 64 and rotatable around the rotating shaft 64. Turn. When the oil cylinders 62, 65 are oiled, the piston rods of the two oil cylinders are extended, so that the upper pneumatic spoiler 68 and the lower pneumatic spoiler 67 are rotatably supported around the rotating shaft 64 (shown by a broken line in the figure), and the upper pneumatic spoiler 68 and the lower pneumatic spoiler 67 are opened; when the oil cylinders 62, 65 are unloaded, the upper pneumatic spoiler 68 and the lower pneumatic spoiler 67 are rotated around the rotating shaft 64 under the action of the oil cylinder to adjust the windmill speed. And the brakes on the windmill.

Embodiment 2

 4 is a schematic structural view of the ducted wind power generator of the present embodiment, and FIG. 5 is a top view of the ducted wind power generator of the present embodiment, the ducted wind power generator of the embodiment includes: a windmill, having a wind The axle 1 and the blade 2 mounted on the windmill shaft 1; the motor drive system is mounted on the frame 19 and connected to the windmill shaft 1 to drive the windmill to rotate by driving the windmill shaft 1 when starting and insufficient wind; The wind turbine generator is mounted on the windmill shaft 1 and performs wind power generation in accordance with the rotation of the windmill shaft 1.

Wherein, the ducted wind power generation device has a plurality of cross arms 4 fixedly mounted on the windmill shaft 1, so that the cross arm 4 can rotate together with the windmill shaft 1, and each cross arm 4 is fixed with an extension along the cross arm 4. Base 23. The base 23 is fixed away from the end of the windmill shaft 1 (ie, the outer side of the base 23), and the duct 6 is extended along the base 23, and the wind wheel device is installed therein, and has a wind wheel shaft 31 and a wind wheel shaft. Wind wheel on 31 5 and the wind wheel 32; the "L" shaped air guiding cylinder 39 is fixed to the frame 23, one end of which is connected to the outside of the duct 6, and the other end is directed to the inflow direction. The base 23 is fixed to the one end of the windmill shaft 1 (ie, the inner side of the base 23), and the organic storage cover 33 is fixed. The generator cover 26 is provided with a generator 26, and the generator 26 is mounted on the base 23, and the brake is provided thereon. 28, the generator 26 is directly connected to the wind turbine shaft 31 via the coupling 27 (shown in FIG. 5), or connected to the wind turbine shaft 31 via the torque converter 29, or connected to the wind turbine shaft 31 via a speed increasing mechanism (Fig. 6)), so that the generator 26 operates when the wind turbine device rotates.

 As shown in FIG. 7, the outer side of the "L"-shaped air guiding cylinder is mounted with a pneumatic streamlined shield 38 for reducing wind resistance. The pneumatic streamlined shield 38 includes a front end upper shield 38A and a rear end upper shield 38B. A rear lower shroud 38C and a front lower shroud 38D.

 The rear end of the "L" shaped air duct is fixed with a rear bracket 58, a rear upper guard 38B, and a rear lower guard 38C are respectively fixed to the rear bracket 58.

 A bracket 55 is fixed to the guiding edge of the "L"-shaped air guiding cylinder 39. One end of the bracket 55 is fixed on the guiding edge of the L-shaped air guiding cylinder 39, and the other end is outwardly extended and is mounted with a rotating shaft 54. A cylinder 57 and a cylinder 59 are attached to both sides. The front end upper cover 38A and the front lower lower cover 38D are respectively provided with a lug 56 and a lug 60. One end of the oil cylinder 57 is fixed on the upper side of the bracket 55, and the other end is connected to the lug 56. One end of the oil cylinder 59 is fixed to the bracket. The lower side of 55 is connected to the lug 60 at the other end. The ends of the front end upper shield 38A and the front lower lower shield 38D are respectively coupled to the rotary shaft 54 and rotatable about the rotary shaft 54. When the oil cylinders 57, 59 are oiled, the piston rods of the two oil cylinders are extended, so that the front end upper shield 38A and the front lower lower shield 38D are rotatably supported around the rotating shaft 54, and the front end upper shield 38A and the front lower lower shield 38D are opened; When the cylinders 57, 59 are unloaded, the front end upper shield 38A and the front lower lower shield 38D are rotated and closed around the rotating shaft 54 by the action of the oil cylinder to adjust the windmill speed and brake the windmill.

 Other structures of the ducted wind power generator of the present embodiment are the same as those of the first embodiment, and will not be repeated herein. Embodiment 3

As shown in FIGS. 10a and 10b, the ducted wind power generator of the present embodiment has a plurality of cross arms 4 fixedly mounted on the windmill shaft 1, so that the cross arm 4 can rotate together with the windmill shaft 1, each cross arm 4 The organic seat 23 is fixed on the upper side. The duct 6 is fixed to the end of the cross arm 4 away from the windmill shaft 1 (ie, the outer side of the cross arm 4) through the base 23, and extends perpendicularly to the cross arm 4, in which the wind wheel device is mounted, has the wind wheel shaft 31 and is mounted on The wind wheel 5 and the wind wheel 32 on the wind turbine shaft 31; the generator 26 is fixed to the end of the cross arm 4 near the windmill shaft 1 through the base 23 (i.e., inside the cross arm 4), and the generator 26 and the duct 6 are placed side by side to generate electricity. There is a brake on the machine 26 The vehicle assembly 28, the generator 26 is coupled to the rotor shaft 31 via a chain drive mechanism (shown in Figure 10a) or a crank link transmission mechanism (shown in Figure 10b). When the wind turbine shaft 31 is rotated, the generator 26 is driven to generate electricity by a chain transmission mechanism (as shown in Fig. 10a) or a crank link transmission mechanism (as shown in Fig. 10b).

 The structure of the wind turbine device is the same as that of the first embodiment, and will not be repeated here. As shown in the structure of the chain transmission mechanism shown in Fig. 10a, the other end of the wind turbine shaft 31 is mounted with a main transmission wheel 78, and the generator wheel 26 is fixed with a driven wheel 80, and the transmission belt/transmission chain 79 is fitted on the driving wheel 78 and the driven wheel 80. In order to achieve power transmission from the driving wheel 78 to the driven wheel 80.

 As shown in Fig. 10b, the other end of the wind turbine shaft 31 is provided with an eccentric wheel 69. The generator 26 is fixed with an eccentric wheel 74. One end of the curved rod 70 is fixed to the eccentric wheel 69, and the other end is mounted. The shaft hole 71 of the input link 73 is fixed to the link 73 by the bolt 72. The other end of the link 73 is provided with a shaft hole 76, and one end of the crank rod 75 is fitted into the shaft hole 76. The bolt is fixed to the link 73, and the other end of the crank 75 is fixed to the eccentric 74, thereby realizing the power transmission from the wind turbine shaft 31 to the generator 26.

 Other structures of the ducted wind power generator of the present embodiment are the same as those of the first embodiment, and will not be repeated herein. Although the invention has been described in detail above, the invention is not limited thereto, and those skilled in the art can make modifications in accordance with the principles of the invention. Therefore, various modifications in accordance with the principles of the invention should be understood as It is within the scope of protection of the present invention.

Claims

Claim  1. A ducted wind turbine comprising:  a windmill having a windmill shaft (1) and a blade (2) mounted on the windmill shaft (1);  The motor drive system is mounted on the frame (19) and connected to the windmill shaft (1). When there is no wind and insufficient wind, the windmill shaft (1) is driven to rotate to drive the windmill to rotate;  The ducted wind power generator is mounted on the windmill shaft (1) and generates wind power with the rotation of the windmill shaft (1).  2. The ducted wind power generator according to claim 1, wherein the motor drive system is a system having a motor drive and power generation bidirectional function, comprising: a frame fixed to the base (16) ( 19); two-way motor/generator (15), gearbox (12), fluid coupling (9) fixed to the frame; wherein the two-way motor/generator (15) and one end of the gear box (12) Connected, the other end of the gearbox (12) is connected to one end of the fluid coupling (9), and the other end of the fluid coupling (9) is connected to the windmill shaft (1).  3. The ducted wind power generator according to claim 1, wherein the ducted wind power generation device comprises:  a cross arm (4) mounted on the windmill shaft (1), to which a base (23) extending perpendicular to the cross arm (4) is fixed;  The duct (6) is fixed at one end of the base (23) and extends along the base (23);  a wind wheel device, installed in the duct (6), having a wind wheel shaft (31) and a wind wheel (5) mounted on the wind wheel shaft (31);  The generator (26) is fixed to the other end of the base (23), directly connected to the wind turbine shaft (31), or connected to the wind turbine shaft (31) via a torque converter (29) or via a speed increasing mechanism, so that Power is generated by the driving of the wind turbine device.  4. The ducted wind power generator according to claim 1, wherein the ducted wind power generation device comprises:  a cross arm (4) mounted on the windmill shaft (1), to which a base (23) extending along the cross arm (4) is fixed; a duct (6) fixed to the outside of the base (23) And extending along the base (23); An "L" shaped air duct (39) having one end connected to the outside of the duct (6) and the other end facing the incoming flow direction; a wind wheel device, installed in the duct (6), having a wind wheel shaft (31) and a wind wheel (5) mounted on the wind wheel shaft (31);  The generator (26) is fixed to the inner side of the base (23), directly connected to the wind turbine shaft (31), or connected to the wind turbine shaft (31) via a torque converter (29) or via a speed increasing mechanism, so as to Power is generated by the driving of the wind turbine device.  The ducted wind power generator according to claim 3 or 4, wherein the wind turbine device further comprises:  The wind wheel axle bracket (36, 37) has two ends fixedly connected to the duct (6), and a bearing box (34, 35) is arranged in the middle portion thereof;  The rotor shaft (31) is coupled to the generator (26) or the torque converter (29) or the speed increasing mechanism through a bearing housing (34, 35).  6. The ducted wind power generator according to claim 3 or 4, wherein the torque converter (29) is provided with a brake assembly (28), or the generator (26) is mounted There are brake assemblies (28).  The ducted wind power generator according to claim 4, wherein the outer side wall of the "L" shaped air guiding cylinder (39) is mounted with a pneumatic streamlined shield (38), pneumatic flow The linear shield (38) comprises: a bracket (55), one end of which is fixed on the guiding edge of the "L" shaped air guiding cylinder (39), and the other end is outwardly extended and is mounted with a rotating shaft (54), the bracket (55) ) The upper and lower sides are respectively equipped with cylinders (57, 59); the front upper shield (38A) and the front lower shield (38D) are respectively supported by the cylinders (57, 59), and the ends thereof are respectively connected to the shaft (54). ) articulated to open and close the front end upper shield (38A) and the front lower lower shield (38D) driven by the cylinders (57, 59);  The rear upper shroud (38B) and the rear lower shroud (38C) are attached to the trailing edge of the "L" shaped air duct (39).  The ducted wind power generator according to claim 5, wherein the cross arm (4) has a pneumatic streamline shape, and a pneumatic spoiler (22) is mounted on the leading edge thereof, and includes: The spoiler bracket (63) has one end fixed to the guiding edge of the cross arm (4), and the other end is outwardly extended and mounted with a rotating shaft (64), and the upper and lower sides of the spoiler bracket (63) are respectively installed Cylinder (62, 65); upper pneumatic spoiler (68) and lower pneumatic spoiler (67) are respectively arranged on the upper and lower sides of the spoiler bracket (63), and respectively by the oil cylinders (62, 65) Support, the ends of which are respectively hinged with the rotating shaft (64) to realize the upper pneumatic spoiler (68) and the lower pneumatic spoiler (67) driven by the oil cylinders (62, 65) Opening and closing.  9. The ducted wind power generator according to claim 5, wherein the speed increasing mechanism comprises:  a bracket (43) fixed to the base (23);  The driving shaft (41) is mounted on the bracket (43) through the bearing housing (42), connected to one end of the wind turbine shaft (31), and the driving shaft (40) is mounted on the driving shaft (41);  The driven shaft (46) is mounted on the bracket (43) through the bearing housing (47), connected to the generator (26), and the driven wheel (51) is mounted thereon;  The drive belt (50) is fitted on the driving wheel (40) and the driven wheel (51) to realize the power transmission of the driving wheel (40) to the driven wheel (51).  The ducted wind power generator according to claim 5, wherein the wind wheel (5) may be a single row type, or a tandem type, or a coaxial inverted type, or a side-by-side type;  The duct (6) may be a diffuser ducted duct, or a collecting ducted duct, or a wind diffusing ducted duct, or a straight ducted duct.  The ducted wind power generator according to claim 1 or 2, wherein the ducted wind power generation device comprises:  a cross arm (4) mounted on the windmill shaft (1) on which the organic seat (23) is fixed;  The duct (6) is mounted on the outer side of the cross arm (4) through the base (23) and extends perpendicular to the cross arm (4);  a wind wheel device, installed in the duct (6), having a wind wheel shaft (31) and a wind wheel (5) mounted on the wind wheel shaft (31);  The generator (26) is mounted on the inside of the cross arm (4) through the base (23), placed side by side with the duct (6), and connected to the rotor shaft (31) via a chain drive or a crank link transmission.