Low gravity center transmission self-wind-seeking double-wind-wheel generator set

Abstract

The application relates to a low-barycenter transmission self-wind-aiming double-wind-wheel generator set, which comprises a tower, a rotating sleeve, a top seat, a wind-aiming device, a forward-rotation wind-wheel set, a reverse-rotation wind-wheel set, a transmission device and a power generation device; the top seat is rotationally connected at the top of the tower; the rotating sleeve is arranged in the tower and the upper end of the rotating sleeve is inserted into the top seat; the forward-rotation wind-wheel set and the reverse-rotation wind-wheel set are symmetrically rotationally connected at the two sides of the middle part of the top seat; the power generation device is arranged at one side of the bottom of the tower; the forward-rotation wind-wheel set and the reverse-rotation wind-wheel set are connected with the power generation device through the transmission device; and the wind-aiming device is arranged between the rotating sleeve and the side wall of the tower at the top of the top seat. In the application, the top seat and the rotating sleeve are connected through sliding pins, the top seat rotates with the rotating sleeve, the top end of the tower does not bear the dead load of the rotating sleeve and the transmission device, the stability and safety are higher, the swing of the tower cannot be aggravated by the eccentric rotation of the wind wheel and the swing of the blades, and resonance cannot be caused, the wind wheel can automatically aim at the wind through reliable mechanical rotary switches, a weak-current conductive ring on / off battery and a motor loop, and the wind wheel can automatically aim at the wind.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and in particular to a low center of gravity driven self-contained wind turbine generator set. Background Technology

[0002] A wind turbine generator generates electricity by rotating a wind turbine under the influence of wind power, which in turn drives a motor. For many years, research on new technologies such as high-efficiency wind turbine generators has been a hot topic in wind power technology innovation and development both domestically and internationally. The technology is moving towards intelligent wind turbine units with ultra-large capacity, high stability, high reliability, and high efficiency, and many research achievements have been made in recent years.

[0003] Currently, China's wind turbines are leading the world in large-scale development: 1. The capacity of individual wind turbines is increasing; in 2022, onshore 8MW+ units and offshore 16MW and 18MW wind turbines were put into operation; 2. The diameter of wind turbine rotors is increasing; onshore rotor diameters have reached 216m, and offshore rotor diameters have reached 260m; 3. The hub height of wind turbines is increasing; in 2022, the average hub height of newly installed wind turbines nationwide reached 110m, with a maximum of 170m. Despite this, my country's wind energy development still has enormous potential and arduous research tasks, a crucial aspect of which lies in how to maximize wind energy utilization and safety while reducing maintenance costs through new technologies.

[0004] Currently popular traditional tower-type three-bladed wind turbine generators are commercialized, but their wind energy conversion efficiency is only 23%–29%. Research by Appa Technology Innovations in the United States on several forward and reverse rotating two-stage wind turbines shows that wind turbines with front and rear forward and reverse rotating rotors can capture 30%–40% more wind energy than unidirectional single-stage wind turbines. In recent years, the 2.7MW tandem dual-rotor wind turbine unit developed under the leadership of China Huaneng Group has achieved 15% higher efficiency than traditional wind turbine units, nearly halved the size of the turbine rotor, and reduced costs by more than 10%.

[0005] Chinese patent CN111810359 B discloses a biplane wind turbine generator. The generator is mounted on the upper part of the tower, and the rudder is modified into a double-bladed type. The windward surfaces of the main unit, front blade, and rear blade are adjusted to face the wind, thereby improving power generation efficiency. Chinese patent CN114893356B discloses a dual-blade grid-connected wind turbine generator, including a generator body. A rotating shaft is rotatably connected to the center of the front and rear sides of the generator body, and brake discs are fixedly connected to the outer surface of the rotating shaft near the generator body. A cooling mechanism is provided above the brake discs. Chinese patent CN118564403B discloses a low-wind-speed start-up enhancement device for a wind turbine generator. The generator, speed increase, and control system are located at the top of the tower. Chinese patent CN116292078B discloses an adaptive constant-speed wind turbine generator, including a main shaft. The lower end of the main shaft is connected to the rotating shaft of the generator. Upper limit sleeves and lower limit sleeves are fixedly fixed on the main shaft at intervals, and a sliding sleeve is provided on the main shaft between the upper limit sleeves and the lower limit sleeves. Chinese patent CN118564403B discloses a low-wind-speed start-up enhancement device for a wind turbine, including a tower, a generator, and a wind turbine, with the generator located at the top of the tower; it also includes a wind turbine shaft, which is connected to the wind turbine and the generator.

[0006] However, existing large and medium-sized wind turbine generator sets still have the following disadvantages: 1. The tower top bears a large load, the overall center of gravity is high, and stability and safety are poor. Since the generator, speed increaser, gear transmission, cooling system, braking system, oil pump supply system, and electrical control cabinet are all located in a sealed chamber at the top of the tower, the tower bears a large load, which will increase with the increase in the capacity of a single wind turbine. The installation, adjustment, lubrication, and sealing of key components of the transmission device are difficult, and the installation, wiring, power distribution, and electrical control of the generator are complex, resulting in frequent maintenance, high costs, and the need for a dedicated elevator. 2. The eccentric rotation of the wind turbine at the top of the tower, the blade oscillation under wind force, and the inherent vibration of the generator, speed increaser, and gear transmission will all exacerbate the oscillation of the tall, high-center-of-gravity tower. As the capacity of a single wind turbine increases, the oscillation of the tall, high-center-of-gravity tower will increase, leading to resonance. 3. Large and medium-sized wind turbines are not easily aligned with the wind direction relative to the tower at all times. A complex electric yaw system is usually used to adjust the wind turbine to align with the wind direction to ensure that the wind turbine is always facing the wind and obtains maximum wind energy. A yaw system typically includes a wind vane, yaw motor, gear reducer, and yaw brake. The wind vane transmits wind direction changes as an electrical signal to the processor in the yaw motor control circuit. After comparison, the processor sends a forward or reverse yaw command to the yaw motor, which then drives the wind turbine to yaw against the wind via the reducer. 4. Connecting the output wires of the generator and yaw motor, which rotate with the top mount, to the wires of the fixed tower using a high-voltage conductive ring between the top mount and the tower results in poor safety. Summary of the Invention

[0007] To address the aforementioned problems, the present invention aims to provide a low-center-of-gravity self-contained wind turbine generator set.

[0008] The technical solution adopted in this invention is as follows:

[0009] The present invention proposes a low center of gravity driven self-contradictory wind turbine generator set, which includes a tower, a rotating sleeve, a top base, a wind-contradictory device, a forward-rotating wind turbine set, a reverse-rotating wind turbine set, a transmission device, and a generator set.

[0010] The tower is a hollow two-section stepped cylindrical structure, with the diameter of the lower cylindrical structure being larger than that of the upper cylindrical structure; a radial platform is formed between the two cylindrical structures; an upper inner hole is provided at the top of the upper cylindrical structure; a partition is provided on the lower inner side of the lower cylindrical structure, and the partition has an axial through hole; a boss seat communicating with the bottom side of the tower is provided.

[0011] The top seat is a cylindrical shell with a small through hole coaxially opened at the top, a circular cavity provided in the upper part of the inner side, radial through holes symmetrically opened on both sides of the middle part, and a large through hole opened at the bottom; the lower end face of the top seat has circumferentially distributed axial pin holes I; the lower end of the top seat is rotatably connected to the inner hole on the top of the tower.

[0012] The rotating sleeve is a bottom-sealed cylindrical structure with axially evenly distributed pin holes II on its upper end face, and pin holes II correspond one-to-one with pin holes I; the upper outer wall of the rotating sleeve has an outer circular groove, and a circumferential through hole is opened in the middle of one side wall, and an inner inclined plate is provided on the inner wall corresponding to the circumferential through hole; a ring gear is coaxially fixed to the lower outer circumference of the rotating sleeve, and radial through holes parallel to the circumferential through holes are symmetrically opened on the lower two side walls of the rotating sleeve, and the radial through holes on both sides of the lower part of the rotating sleeve are parallel to the radial through holes on both sides of the middle part of the top seat; the lower end of the rotating sleeve is set as a frustum conical structure, and a rotating shaft is coaxially fixed to its lower end;

[0013] The rotating sleeve is coaxially arranged inside the tower, and its upper end pin hole II and the corresponding pin hole I on the lower end face of the top seat are connected by sliding pins; the ring gear outside the rotating sleeve is located on the upper inner side of the lower section of the tower cylinder; the rotating shaft at the lower end of the rotating sleeve extends to the bottom of the partition.

[0014] The forward-rotating wind turbine assembly and the reverse-rotating wind turbine assembly are symmetrically rotated and connected to both sides of the middle of the top seat; the power generation device is located above the bottom boss seat of the tower; the forward-rotating wind turbine assembly and the reverse-rotating wind turbine assembly are connected to the power generation device through a transmission device; the wind-conducting device is located between the top of the top seat and the rotating sleeve and the side wall of the tower.

[0015] Furthermore, the transmission device includes a transmission chain, a sprocket, a bevel gear set, and a bevel gear set; the forward-rotating impeller set consists of an impeller equipped with left-leaning blades and a shaft coaxially fixed to the impeller; the reverse-rotating impeller set consists of an impeller equipped with right-leaning blades and a shaft coaxially fixed to the impeller; the forward-rotating and reverse-rotating impeller sets are respectively axially symmetrically rotatably connected in radial through holes on both sides of the center of the top seat, and one end of their shaft located in the top seat is coaxially fixed to a sprocket; the bevel gear set consists of bevel gears and a shaft coaxially fixed to the bevel gears; the bevel gear set is rotatably connected to two shafts on the lower part of the rotating sleeve. A sprocket is coaxially fixed to one end of the radial through hole on the side, with its shaft located inside the rotating sleeve; the sprockets at the inner ends of the forward-rotating wind turbine group and the reverse-rotating wind turbine group are respectively connected to the sprockets at the inner ends of the bevel gear groups on both sides through a transmission chain; the bevel gear group consists of bevel gears, a shaft coaxially fixed to the bevel gears, and a large gear coaxially fixed to the bottom of the shaft; the bevel gears mesh with the bevel gears on both sides, and their shafts are rotatably connected to the through hole of the partition shaft, with the large gear located below the partition; the rotating shaft at the lower end of the rotating sleeve is coaxially rotatably connected to the bevel gear group; the input end of the power generation device meshes with the large gear through a small gear;

[0016] Furthermore, the power generation device includes a generator and a speed increaser; the speed increaser is coaxially connected to the input end of the generator; the input shaft of the speed increaser is coaxially keyed to a pinion.

[0017] Furthermore, the wind-fighting device includes gears, a motor, a battery, two horizontal pins, two inner wires, three outer wires, an insulating disc, a copper ring, an insulating ring, a wind vane, a copper rod, a vertical pin, two conductive rings, an insulating sleeve, and four springs. The wind vane is rotatably connected to the axial small through hole at the top of the top seat, and the lower end of the wind vane is fixedly connected to the insulating ring set in the circular cavity. The insulating disc is coaxially fixed inside the circular cavity. The copper ring is coaxially fixed inside the insulating disc. The symmetrical insulating arcs at both ends of the insulating disc are located above the radial through hole of the top seat and form a current-disconnecting circular ring with the copper ring. The insulating ring has a radial through hole inside, and the copper rod is slidably connected to the radial through hole of the insulating ring. A spring is provided between the end of the copper rod and the outer wall of the insulating ring, and the end of the copper rod is in elastic contact with the copper ring. The insulating disc has an axial through hole, and the vertical pin is slidably connected in its axial through hole, and the upper end of the vertical pin is in elastic contact with the copper rod. A spring is provided between the end and the insulating disc; the insulating sleeve is fixedly connected to the outer circular groove of the rotating sleeve; two conductive rings are coaxially fixedly connected to the outer circle of the insulating sleeve and axially spaced by a certain distance; a horizontal through hole is opened on one side of the upper part of the tower, and an insulating plate is fixedly connected to the outside of the horizontal through hole. The insulating plate has two through holes, one above the other, and two horizontal pins are slidably connected to the two through holes on the insulating plate respectively; a spring is provided between the inner end of the horizontal pin and the insulating plate, and the inner end of the horizontal pin is elastically in contact with the outer circle of the conductive ring respectively; one inner wire connects a copper ring and a conductive ring, another inner wire connects a vertical pin and another conductive ring, one outer wire connects a horizontal pin and a battery, another outer wire connects another horizontal pin and a motor, and a third outer wire connects a battery and a motor; the motor is fixedly connected to one side of the radial platform of the tower, and the output shaft of the motor is coaxially keyed to a gear. The gear is located inside the tower and meshes with the outer ring gear of the rotating sleeve.

[0018] Furthermore, the generator set also includes a tensioning wheel assembly; the tensioning wheel assembly includes a tensioning wheel, a connecting rod, a screw, and a tensioning spring; one end of the connecting rod is rotatably connected to both one end of the tensioning wheel and one end of the screw; the tensioning wheel is in contact with one side of the transmission chain; the other end of the connecting rod is rotatably connected to the circumferential through hole of the rotating sleeve; the other end of the screw passes through the inner inclined plate of the rotating sleeve and is threadedly connected to a nut, and a tensioning spring is provided between the nut and the inner inclined plate of the rotating sleeve.

[0019] Furthermore, the generator set also includes an oil pump lubrication system; the oil pump lubrication system includes an oil pump, oil pipes, and oil; the oil pump is fixedly connected to one side of the radial platform of the tower; the oil is disposed inside the lower cylindrical structure of the tower; the oil pump is connected to the oil through an oil extraction pipe and connected to the connection points of each gear pair and rotating pair through an oil supply pipe; the oil is in contact with the bevel gear set, sprocket, bevel gear set, and pinion.

[0020] Furthermore, the wind vane consists of a rotating shaft and a wind vane plate fixed to the upper end of the rotating shaft, which are coplanar; the wind vane is rotatably connected to a small through hole at the top of the top seat through its rotating shaft, and the lower end of the rotating shaft is fixed to an insulating ring.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The tower top structure is simple, with low load-bearing capacity, a low center of gravity, and good stability and safety. Since the generator, speed increaser, gear transmission, oil tank, and oil pump lubrication system are all located at the lower end of the tower, the oil pump supply system, cooling device, and braking device (not covered in this invention) can also be installed at the lower end of the tower. Therefore, the installation, adjustment, lubrication, and sealing of key components of the transmission device are relatively easy. The installation, wiring, power distribution, and electrical control of the generator are simple and convenient, eliminating the need for a maintenance elevator and reducing maintenance costs. Because the top mount and the rotating sleeve are connected by a sliding pin, the top mount only rotates with the rotating sleeve, so the top of the tower does not bear the self-weight load of the rotating sleeve and the transmission device.

[0023] 2. The dual-rotor drive system has a low center of gravity, good stability and safety. The eccentric rotation of the rotor and the oscillation of the blades will not aggravate the tower swaying, nor will it cause resonance.

[0024] 3. The wind-following device employs a simple, safe, and reliable mechanical system. The wind vane shaft is rotatably connected to the top base, causing the insulating disc and copper rod to rotate with the wind direction. The ring formed by the copper arc and the insulating arc is fixedly connected to the top base. The copper rod, the ring, and the vertical pin make elastic contact, forming a reliable mechanical rotary switch. Through a weak current conductive ring, the battery and motor circuits are switched on / off, enabling the wind turbine to counteract the wind. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the AA structure in the diagram;

[0027] Figure 3 This is a side view cross-sectional structural diagram of the present invention.

[0028] The attached figures are labeled as follows: 1-Tower; 2-Power generator; 3-Bevel gear set; 4-Bevel gear set; 5-Lubricating oil; 6-Spindle; 7-Transmission chain; 8-Gear; 9-Motor; 10-Battery; 11-Horizontal pin; 12-Top mount; 13-Wire; 14-Insulating disc; 15-Copper ring; 16-Insulating ring; 17-Wind turbine assembly; 18-Wind vane; 19-Copper rod; 20-Vertical pin; 21-Sliding pin; 22-Conductive ring; 23-Insulating sleeve; 24-Tensioning wheel; 25-Connecting rod; 26-Spring; 27-Screw; 28-Oil pump. Detailed Implementation

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] It should be noted that in the description of this invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not mean that the device or element must have a specific orientation, or be constructed and operated in a specific orientation.

[0031] See appendix Figure 1-3 The present invention proposes a low center of gravity driven self-contained wind turbine generator set, which includes a tower 1, a rotating sleeve 6, a top seat 12, a wind-containment device, a wind turbine set 17, a transmission device and a generator device.

[0032] The tower 1 is a hollow two-section stepped cylindrical structure, with the diameter of the lower cylindrical structure being larger than that of the upper cylindrical structure; a radial platform is formed between the two cylindrical structures; an upper inner hole is provided at the top of the upper cylindrical structure; a partition is provided on the lower inner side of the lower cylindrical structure, and the partition has an axial through hole; a boss seat communicating with the bottom side of the tower is provided; an oil cavity is formed inside the lower cylindrical structure.

[0033] The top seat 12 is a cylindrical shell; a small through hole is coaxially opened at the top of the top seat 12, a circular cavity is provided on the upper inner side, radial through holes are symmetrically opened on both sides of the middle, and a large through hole is opened at the bottom; an axial pin hole I is evenly distributed around the circumference on the lower end face of the top seat 12; the lower end of the top seat 12 is rotatably connected to the inner hole on the top of the tower 1.

[0034] The rotating sleeve 6 is a cylindrical structure with a sealed bottom; the upper end face of the rotating sleeve 6 has circumferentially distributed axial pin holes II, and the pin holes II correspond one-to-one with the pin holes I; the upper outer wall of the rotating sleeve 6 has an outer circular groove; the middle of one side wall of the rotating sleeve 6 has a circumferential through hole, and the inner wall of the side corresponding to the circumferential through hole is provided with an inner inclined plate; the lower outer circumference of the rotating sleeve 6 is coaxially fixed to a ring gear, and the lower two side walls of the rotating sleeve 6 have symmetrical radial through holes parallel to the circumferential through holes, and the radial through holes on both sides of the lower part of the rotating sleeve 6 are parallel to the radial through holes on both sides of the middle part of the top seat 12; the lower end of the rotating sleeve 6 is set as a frustum conical structure, and the lower end is coaxially fixed to a rotating shaft.

[0035] The rotating sleeve 6 is coaxially arranged inside the tower 1, and its upper end pin hole II and the corresponding pin hole I on the lower end of the top seat are connected by sliding pins 21; the ring gear outside the rotating sleeve 6 is located on the upper inner side of the lower cylindrical section of the tower 1; the rotating shaft at the lower end of the rotating sleeve 6 extends to the bottom of the partition.

[0036] The wind turbine assembly 17 is provided in two sets, one set rotates forward and the other set rotates in reverse. The forward-rotating wind turbine assembly 17 and the reverse-rotating wind turbine assembly 17 are symmetrically connected to both sides of the middle part of the top seat 12. The power generation device is located above the bottom boss seat of the tower 1. Both wind turbine assemblies 17 are connected to the power generation device through a transmission device. The wind-conducting device is located between the top of the top seat 12 and the rotating sleeve 6 and the side wall of the tower 1.

[0037] The transmission device includes a transmission chain 7, a sprocket, a bevel gear set 4, and a bevel gear set 3; the forward-rotating impeller set 17 consists of an impeller equipped with left-leaning blades and a shaft coaxially fixed to the impeller; the reverse-rotating impeller set 17 consists of an impeller equipped with right-leaning blades and a shaft coaxially fixed to the impeller; the forward and reverse-rotating impeller sets 17 are respectively axially symmetrically connected to radial through holes on both sides of the middle of the top seat 12, and the end of their shaft located inside the top seat 12 is coaxially fixed to a sprocket; the bevel gear set 4 consists of bevel gears and a shaft coaxially fixed to the bevel gears; the bevel gear set is respectively rotatably connected to radial through holes on both sides of the lower part of the rotating sleeve 6, and the end of its shaft located inside the rotating sleeve 6 is coaxially fixed to a sprocket; the sprockets at the inner ends of the forward-rotating impeller set and the reverse-rotating impeller set 17 are respectively connected to a transmission chain 7 corresponds to the sprockets at the inner ends of the bevel gear sets 4 on both sides; the transmission chain 7 can also be replaced by a transmission belt; for wind turbines with ultra-high towers, the transmission chain 7 can also be replaced by multiple sprockets connected in series; the bevel gear set 3 consists of bevel gears, a shaft coaxially fixed to the bevel gears, and a large gear coaxially fixed to the bottom of the shaft; the bevel gears mesh with the bevel gears on both sides, and their shafts are rotatably connected to the through holes of the partition shaft, with the large gear located below the partition; the rotating shaft at the lower end of the rotating sleeve 6 is coaxially rotatably connected to the bevel gear set 3; the power generation device 2 includes a generator and a speed increaser; the speed increaser is coaxially connected to the input end of the generator; the input shaft of the speed increaser is coaxially keyed to the pinion, and meshes with the large gear at the bottom of the bevel gear set 3 through the pinion.

[0038] The wind-guiding device includes a gear 8, a motor 9, a battery 10, two horizontal pins 11, five wires 13, an insulating disc 14, a copper ring 15, an insulating ring 16, a wind vane 18, a copper rod 19, a vertical pin 20, two conductive rings 22, an insulating sleeve 23, and four springs 26. The wind vane 18 consists of a rotating shaft and a wind vane plate fixed to the upper end of the rotating shaft. The wind vane 18 is rotatably connected to a small through hole at the top of the top seat 12 through its rotating shaft, and the lower end of the rotating shaft is fixed to the insulating ring 16 set in the circular cavity. The insulating disc 14 is coaxially fixed to the inner wall of the circular cavity. The copper ring 15 is coaxially fixed to the inner ring of the insulating disc 14. The insulating disk 14 has symmetrical insulating arcs at both ends of its inner ring, and these arcs are located above the radial through holes of the top seat 12, forming a current-disconnecting ring with the copper ring 15. The insulating ring 16 has a radial through hole inside, and the copper rod 19 is slidably connected to the radial through hole of the insulating ring 16. The end of the copper rod 19 is in elastic contact with the copper ring 15, and a spring 26 is provided between the end of the copper rod 19 and the outer wall of the insulating ring 16. The insulating disk 14 has an axial through hole in its middle, and a vertical pin 20 is slidably connected within this axial through hole. The upper end of the vertical pin 20 is in elastic contact with the copper rod 19, and a spring 26 is also provided between the upper end of the vertical pin 20 and the surface of the insulating disk 14. Spring 26; the insulating sleeve 23 is correspondingly fixed in the outer circular groove of the rotating sleeve 6; two conductive rings 22 are respectively coaxially fixed on the outer circle of the insulating sleeve 23 and axially spaced by a certain distance; a horizontal through hole is opened on the upper side wall of the upper cylindrical structure of the tower 1, and an insulating plate is fixed to the outside of the horizontal through hole. The insulating plate has two through holes, and two horizontal pins 11 are respectively slidably connected to the two through holes on the insulating plate; the inner ends of the two horizontal pins 11 are respectively in elastic contact with the outer circles of the two conductive rings 22; and springs 26 are provided between the inner ends of the horizontal pins 11 and the insulating plate; the copper ring 15 and a conductive ring 22 are connected by a spring. A wire 13 is used for connection; the vertical pin 20 and another conductive ring 22 are connected by a wire 13; a horizontal pin 11 and a storage battery 10 are connected by a wire 13, and another horizontal pin 11 and a motor 9 are connected by a wire 13; the storage battery 10 and the motor 9 are connected by a wire 13; the motor 9 is fixed to one side of the radial platform of the tower 1, and the upper side of the storage battery 10 and the motor 9 are fixed to the tower; the output shaft of the motor 9 is coaxially keyed to the gear 8, and the gear 8 is located inside the upper side of the lower cylindrical structure of the tower 1 and meshes with the ring gear outside the rotating sleeve 6.

[0039] In this embodiment, the generator set further includes a tensioning wheel assembly; the tensioning wheel assembly includes a tensioning wheel 24, a connecting rod 25, a screw 27, and a tension spring 26; one end of the connecting rod 25 is rotatably connected to both one end of the tensioning wheel 24 and one end of the screw 27; the tensioning wheel 24 contacts one side of the transmission chain 7; the other end of the connecting rod 25 is rotatably connected to the circumferential through hole of the rotating sleeve 6; the other end of the screw 27 passes through the inner inclined plate of the rotating sleeve 6 and is threadedly connected to a nut, and a tension spring 26 is provided between the nut and the inner inclined plate of the rotating sleeve 6. The pressure of the tension spring 26 can drive the tensioning wheel 24 to roll into contact with the transmission chain 7, and the tension of the transmission chain 7 can be changed by adjusting the position of the nut.

[0040] The generator set also includes an oil pump lubrication system; the oil pump lubrication system includes an oil pump 28, oil pipes and lubricating oil 5; the oil pump 28 is fixedly connected to one side of the radial platform of the tower 1; the lubricating oil 5 is disposed in the oil cavity inside the lower cylindrical structure of the tower 1; the oil pump 28 is connected to the lubricating oil 5 through an oil extraction pipe and is connected to the connection points of each gear pair and rotating pair through an oil supply pipe; the lubricating oil 5 is in contact with the bevel gear set 4, sprocket, bevel gear set 3 and pinion.

[0041] The working principle of this invention is as follows:

[0042] The wind turbines 17 on both sides, rotating in opposite directions, can transmit wind power to the power generation device 2 via a low center of gravity transmission device, thereby driving the power generation device 2 to generate electricity.

[0043] The wind vane 18, positioned to face the wind, rotates with the wind direction, causing the insulating ring 16 and copper rod 19 to rotate relative to the top seat 12. When the copper rod 19 contacts the copper ring 15, it connects the circuit of the motor 9 and the battery 10 through the conductive ring 22. At this time, the motor 9 is energized and drives the rotating sleeve 6 through the gear pair to rotate the top seat 12 and the forward and reverse wind turbine assembly 17 until the copper rod 19 contacts the insulating arc of the insulating disk 14, disconnecting the circuit of the motor 9 and the battery 10. At this time, the forward and reverse wind turbine assembly 17 are in the wind-facing position, and the de-energized motor 9 stops driving the rotating sleeve 6 and the top seat 12 to rotate, realizing automatic wind turbine alignment.

[0044] The tensioning wheel assembly uses the pressure of the tensioning spring 26 to drive the tensioning wheel 24 to roll into contact with the transmission chain 7. By adjusting the position of the nut, the pressure of the tensioning spring 26, the tension of the transmission chain 7, and the wrap angle can be changed to prevent chain slippage.

[0045] The oil pump lubrication system directly supplies the lubricating oil 5 in the oil chamber to the bevel gear pair and chain drive, and supplies the rotating pairs of the forward-rotating impeller group and the reverse-rotating impeller group 17 through the chain drive. The lubricating oil 5 in the oil chamber is supplied to the gear pair and each rotating pair through the oil pump 28 and oil pipe.

[0046] Matters not covered in this invention are common knowledge.

[0047] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A low gravity center transmission self-wind-seeking dual wind wheel generator set, characterized in that: The generator set comprises a tower, a rotating sleeve, a top base, a wind aligning device, a forward rotating wind wheel set, a reverse rotating wind wheel set, a transmission device and a power generation device; The tower is a hollow two-stage stepped cylindrical structure, and the diameter of the lower stage cylindrical structure is larger than that of the upper stage cylindrical structure; a radial platform is formed between the two-stage cylindrical structures; an upper inner hole is arranged at the top of the upper stage cylindrical structure; a partition plate is arranged at the inner lower part of the lower stage cylindrical structure, and the partition plate is provided with an axial through hole; a boss seat is arranged at one side of the bottom of the tower and communicates with the tower; The top base is a cylindrical shell, and a small through hole is coaxially arranged at the top end of the cylindrical shell, a circular hole cavity is arranged at the inner upper part of the cylindrical shell, radial through holes are symmetrically arranged at the two sides of the middle part of the cylindrical shell, and a large through hole is arranged at the bottom of the cylindrical shell; a plurality of axial pin holes I are uniformly arranged on the lower end surface of the top base; the lower end of the top base is rotationally connected to the upper inner hole at the top of the tower; The rotating sleeve is a cylindrical structure with a sealed bottom, and a plurality of axial pin holes II are uniformly arranged on the upper end surface of the cylindrical structure, and the pin holes II correspond to the pin holes I one by one; an outer circular groove is arranged on the upper outer wall of the rotating sleeve, a tangential through hole is arranged in the middle of one side wall, and an inner inclined plate is arranged on the inner wall of the side corresponding to the tangential through hole; a ring gear is coaxially and fixedly connected to the outer circumference of the middle lower part of the rotating sleeve, and a plurality of radial through holes parallel to the tangential through hole are symmetrically arranged on the two side walls of the lower part of the rotating sleeve, and the radial through holes on the two side walls of the lower part of the rotating sleeve are parallel to the radial through holes on the two sides of the middle part of the top base; the lower end of the rotating sleeve is arranged in a conical circular platform structure, and a rotating shaft is coaxially and fixedly connected to the lower end of the rotating sleeve; The rotating sleeve is coaxially arranged in the tower, and the pin holes II on the upper end surface of the rotating sleeve are connected to the pin holes I on the lower end surface of the top base through sliding pins; the ring gear on the outer part of the rotating sleeve is arranged on the inner upper part of the lower stage cylindrical structure of the tower; the rotating shaft at the lower end of the rotating sleeve extends below the partition plate; The forward rotating wind wheel set and the reverse rotating wind wheel set are symmetrically and rotationally connected to the two sides of the middle part of the top base, respectively; the power generation device is arranged above the boss seat at the bottom of the tower; the forward rotating wind wheel set and the reverse rotating wind wheel set are connected to the power generation device through the transmission device; and the wind aligning device is arranged between the top of the top base and the side walls of the rotating sleeve and the tower.

2. The low-gravity transmission self-wind-seeking dual-wind-wheel wind turbine generator set according to claim 1, characterized in that: The transmission device comprises a transmission chain, a chain wheel, a bevel gear set and a bevel gear set; the forward rotation wind wheel set is composed of a wind wheel with left-inclined rotating blades and a shaft coaxially fixed with the wind wheel; the reverse rotation wind wheel set is composed of a wind wheel with right-inclined rotating blades and a shaft coaxially fixed with the wind wheel; the forward rotation wind wheel set and the reverse rotation wind wheel set are respectively connected in the radial through holes on both sides of the middle part of the top seat through axial symmetry rotation, and the shafts in the top seat are coaxially fixed with the chain wheels at one end; the bevel gear set is composed of a bevel gear and a shaft coaxially fixed with the bevel gear; the bevel gear set is respectively connected in the radial through holes on both sides of the lower part of the rotating sleeve through shaft rotation, and the shafts in the rotating sleeve are coaxially fixed with the chain wheels at one end; the chain wheels in the inner ends of the forward rotation wind wheel set and the reverse rotation wind wheel set are respectively connected with the chain wheels in the inner ends of the bevel gear sets on both sides through the transmission chain; the bevel gear set is composed of a bevel gear, a shaft coaxially fixed with the bevel gear and a large gear coaxially fixed at the bottom of the shaft; the bevel gear is engaged with the bevel gears on both sides, and the shaft is rotationally connected with the axial through hole of the partition plate, and the large gear is below the partition plate; the rotating shaft at the lower end of the rotating sleeve is rotationally connected with the bevel gear set; the input end of the power generation device is engaged with the large gear through the pinion.

3. The low-gravity transmission self-wind-seeking double-wind-wheel wind turbine generator set according to claim 2, characterized in that: The power generation device comprises a generator and a speed increaser; the speed increaser is coaxially connected with the input end of the generator; the input shaft of the speed increaser is coaxially keyed connected with the pinion.

4. The low-gravity transmission self-wind-seeking dual-wind-turbine generator set according to claim 1, characterized in that: The wind direction device comprises a gear, a motor, a battery, two cross pins, two inner wires, three outer wires, an insulating disc, a copper ring, an insulating ring, a wind vane, a copper pole, a vertical pin, two conductive rings, an insulating sleeve and four springs; the wind vane is rotationally coupled with an axial small through hole at the top end of the top base, and the lower end of the wind vane is fixedly connected with the insulating ring arranged in the circular hole cavity; the insulating disc is coaxially fixedly connected inside the circular hole cavity; the copper ring is coaxially fixedly connected inside the insulating disc; the symmetrical insulating arcs at both ends of the insulating disc are located above the radial through hole of the top base, and the copper ring and the insulating arcs form a circular ring for on-off electricity; the insulating ring is internally provided with a radial through hole, and the copper pole is slidingly coupled with the radial through hole of the insulating ring; a spring is arranged between the end of the copper pole and the outer wall of the insulating ring, and the end of the copper pole is in elastic contact with the copper ring; the insulating disc is provided with an axial through hole, the vertical pin is slidingly coupled in the axial through hole, the upper end of the vertical pin is in elastic contact with the copper pole, and a spring is arranged between the upper end of the vertical pin and the insulating disc; the insulating sleeve is correspondingly fixedly connected in the outer circular groove of the rotating sleeve; the two conductive rings are coaxially fixedly connected on the outer circle of the insulating sleeve and are axially spaced apart by a certain distance; a horizontal through hole is formed in one side of the upper part of the tower, and an insulating plate is fixedly connected outside the horizontal through hole; the insulating plate is provided with two through holes in the upper and lower directions, and the two cross pins are slidingly coupled with the two through holes of the insulating plate, respectively; the inner end of each cross pin is provided with a spring, and the inner end of each cross pin is in elastic contact with the outer circle of the conductive ring; one inner wire is connected with the copper ring and one conductive ring, another inner wire is connected with the vertical pin and the other conductive ring, one outer wire is connected with one cross pin and the battery, another outer wire is connected with the other cross pin and the motor, and the third outer wire is connected with the battery and the motor; the motor is fixedly connected on one side of the radial platform of the tower, the output shaft of the motor is coaxially keyed connected with the gear, and the gear is located inside the tower and is engaged with the ring gear outside the rotating sleeve.

5. The low-gravity transmission self-wind-seeking dual-wind-turbine generator set according to claim 2, characterized in that: The generator set further comprises a tensioning wheel set; the tensioning wheel set comprises a tensioning wheel, a connecting rod, a screw rod and a tensioning spring; one end of the connecting rod is rotationally coupled with the tensioning wheel and one end of the screw rod; the tensioning wheel is in contact with one side of the transmission chain; the other end of the connecting rod is rotationally coupled with the tangent circular through hole of the rotating sleeve; the other end of the screw rod passes through the inner inclined plate of the rotating sleeve and is threadedly connected with a nut, and the nut and the inner inclined plate of the rotating sleeve are provided with the tensioning spring.

6. The low-gravity transmission self-wind-seeking dual-wind-turbine generator set according to claim 3, characterized in that: The generator set further comprises an oil pump lubrication system; the oil pump lubrication system comprises an oil pump, an oil pipe and oil liquid; the oil pump is fixedly connected on one side of the radial platform of the tower; the oil liquid is arranged inside the lower segment cylindrical structure of the tower; the oil pump is connected with the oil liquid through the oil extraction pipe and is connected to each gear pair and the rotating pair connection through the oil supply pipe; the oil liquid is in contact with the bevel gear set, the chain wheel, the bevel gear set and the pinion.

7. The low-gravity transmission self-wind-seeking double-rotor wind turbine generator set according to claim 4, characterized in that: The wind vane is composed of a rotating shaft and a wind direction plate fixedly connected with the upper end of the rotating shaft; the wind vane is rotationally coupled with the small through hole at the top end of the top base through the rotating shaft, and the lower end of the rotating shaft is fixedly connected with the insulating ring.

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