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

Abstract

The invention relates to a low-gravity-center transmission self-wind-aligning double-wind-wheel generator set which comprises a tower, a rotating sleeve, a top seat, a wind aligning device, a forward-rotating wind wheel set, a reverse-rotating wind wheel set, a transmission device and a generator device. The top seat is rotationally connected to 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 footstock; the forward rotation wind wheel set and the reverse rotation wind wheel set are symmetrically and rotationally connected to the two sides of the middle of the top base respectively; the power generation device is arranged on one side of the tower bottom; 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 aligning device is arranged among the top of the top seat, the rotating sleeve and the side wall of the tower. The top seat is connected with the rotating sleeve through the sliding pin, the top seat rotates along with the rotating sleeve, the top end of the tower does not bear self-weight loads of the rotating sleeve and the transmission device, stability and safety are high, tower shimmy cannot be aggravated only through eccentric rotation of the wind wheel and swing of the blades, resonance cannot be caused, and the wind driven generator can be driven by the reliable mechanical rotary switch. The storage battery and the motor loop are switched on / off through the weak current conducting ring, and automatic wind facing of the wind wheel can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a low-center-of-gravity transmission self-facing wind double wind turbine generator set. Background Art

[0002] The wind turbine generator is a wind turbine that rotates under the action of wind, thereby driving the motor to rotate and generate electricity. Over the years, research on new technologies such as high-efficiency wind turbine generators at home and abroad has been a hot spot for innovation and development of wind power technology. It is developing towards the direction of intelligent wind turbines with ultra-large capacity, high stability, high reliability and high efficiency, and has achieved many research results in recent years.

[0003] At present, China's wind turbines are leading the world's large-scale trend: 1. The capacity of wind turbines is getting bigger and bigger. In 2022, 8Mw+ onshore units and 16Mw and 18Mw offshore wind turbines have been put into use; 2. The diameter of wind turbine rotors is getting bigger and bigger. The diameter of onshore wind turbines has reached 216m, and the diameter of offshore wind turbines has reached 260m; 3. The hub height of wind turbines is getting higher and higher. In 2022, the average hub height of newly installed wind turbines in the country reached 110m, and the maximum was 170m. Despite this, there is still huge room for development of wind energy in my country and arduous research tasks. A very important aspect is how to maximize the utilization rate and safety of wind energy and reduce maintenance costs through new technical means.

[0004] The currently popular traditional tower-type three-blade wind turbine generator has been commercialized, but its wind energy conversion efficiency is only 23% to 29%. The research of Appa Technology Innovation Company in the United States on multiple forward and reverse rotating two-stage impeller wind turbines shows that the wind turbine with forward and reverse rotating structural wheels installed in front and back can obtain 30% to 40% more wind energy than the unidirectional single-stage wind turbine. In recent years, the 2.7Mw tandem double-wind-rotor wind turbine unit developed by China Huaneng Group has increased the efficiency by 15% compared with the traditional wind turbine unit, reduced the size of the wind turbine impeller by nearly half, and reduced the cost by more than 10%.

[0005] Chinese patent CN111810359 B discloses a double-wing wind turbine generator, which is installed at the upper end of the tower and transformed into a double-blade type toward the rudder. The windward surfaces of the main engine and the front and rear blades are adjusted to face the wind to improve the power generation efficiency. Chinese patent CN114893356B discloses a double-impeller 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 the outer surface of the rotating shaft close to the generator body is fixedly connected to a brake disc, and a cooling mechanism is arranged above the brake disc. Chinese patent CN118564403B discloses a low wind speed starting enhancement device for a wind turbine generator, in which the generator and the speed increase and control system are located at the top of the tower. Chinese patent CN116292078B discloses an adaptive constant speed operation wind turbine generator, including a main shaft, the lower end of which is connected to the rotating shaft of the generator, an upper limit sleeve and a lower limit sleeve are fixed on the main shaft at intervals, and a sliding sleeve is arranged on the main shaft between the upper limit sleeve and the lower limit sleeve. Chinese patent CN118564403B discloses a low wind speed starting enhancement device for a wind turbine, comprising a tower, a generator and a wind rotor, wherein the generator is located on the top of the tower; and also comprising a wind rotor shaft connected to the wind rotor, and the wind rotor shaft is connected to the generator.

[0006] However, the existing large and medium-sized wind turbine generator sets still have the following disadvantages: 1. The top of the tower is heavily loaded, the center of gravity of the whole machine is high, and the stability and safety are poor. Since the generator, speed increaser, gear transmission, heat dissipation device, brake device, oil pump oil supply system, and electric control cabinet are all located in the sealed compartment at the top of the tower, the tower is heavily loaded, and the load on the tower will increase as the capacity of the wind turbine increases. The installation, adjustment, lubrication, and sealing of the key components of the transmission device are difficult, and the installation, wiring, power distribution, and electric control of the generator are complex, maintenance is frequent, and the cost is high, and a special elevator is required. 2. The eccentric rotation of the wind wheel at the top of the high tower, the swing of the blades under the action of wind force, and the inherent vibration of the generator, speed increaser, and gear transmission will aggravate the swing of the high center of gravity tower. As the capacity of the wind turbine increases, the swing of the high center of gravity tower will increase, resulting in resonance. 3. It is not easy for large and medium-sized wind wheels to face the wind relative to the tower all the time. Usually, a more complex electric yaw system is used to adjust the wind wheel to align with the wind direction to ensure that the wind wheel faces the wind all the time and obtains the maximum wind energy. The yaw system generally includes a wind vane, a yaw motor, a gear reducer, a yaw brake, etc. The wind vane transmits the wind direction change electrical signal to the processor of the yaw motor control circuit, and after comparison, the processor transmits it to the yaw motor to issue a positive or reverse yaw command, and the motor will drive the wind wheel to the wind through the reducer. 4. Use a strong electric conductive ring between the top base and the tower to connect the output wires of the generator and yaw motor that rotate with the top base to the wires of the fixed tower, which has poor safety. Summary of the invention

[0007] In view of the above problems, the object of the present invention is to provide a low-center-of-gravity transmission self-facing wind dual-wind turbine generator set.

[0008] The technical solution adopted by the present invention is as follows:

[0009] The invention provides a low-center-of-gravity transmission self-facing wind double wind turbine generator set, comprising a tower, a rotating sleeve, a top seat, a wind-facing device, a forward-rotating wind turbine set, a reverse-rotating wind turbine set, a transmission device and a generator device;

[0010] The tower is a hollow two-stage stepped cylindrical structure, and the diameter of the lower cylindrical structure is larger than that of the upper cylindrical structure; a radial platform is formed between the two cylindrical structures; an upper inner hole is arranged on the top of the upper cylindrical structure; a partition is arranged on the inner lower part of the lower cylindrical structure, and an axial through hole is opened on the partition; a boss seat connected to the tower is arranged on one side of the bottom;

[0011] The top seat is a cylindrical shell, with a small through hole coaxially opened at the top, a circular hole cavity arranged at the inner upper part, radial through holes symmetrically opened on both sides of the middle part, and a large through hole opened at the bottom; the lower end surface of the top seat is provided with axial pin holes I evenly distributed around the circumference; the lower end of the top seat is correspondingly connected to the inner hole on the top of the tower frame for rotation;

[0012] The rotating sleeve is a cylindrical structure with a bottom seal, and its upper end surface is provided with axial pin holes II uniformly distributed around the circumference, and the pin holes II correspond to the pin holes I one by one; the upper outer wall of the rotating sleeve is provided with an outer circular groove, and a circumferential through hole is provided in the middle of one side wall, and an inner inclined plate is provided on the inner wall on the side corresponding to the circumferential through hole; a ring gear is coaxially fixedly connected to the outer circumference of the middle and lower part of the rotating sleeve, and radial through holes parallel to the circumferential through hole are symmetrically provided on the two side walls of the lower part, and the radial through holes on both sides of the lower part of the rotating sleeve are respectively 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 arranged as a frustoconical structure, and its lower end is coaxially fixedly connected to a rotating shaft;

[0013] The rotating sleeve is coaxially arranged inside the tower, and the pin hole II on the upper end surface thereof is connected to the corresponding pin hole I on the lower end surface of the top seat by a sliding pin; the ring gear outside the rotating sleeve is located at the inner upper part of the lower cylinder of the tower; the rotating shaft at the lower end of the rotating sleeve extends to the bottom of the partition;

[0014] The forward-rotating wind wheel group and the reverse-rotating wind wheel group are respectively symmetrically connected to the two sides of the middle of the top seat; the power generation device is arranged above the boss seat at the bottom of the tower; the forward-rotating wind wheel group and the reverse-rotating wind wheel group are connected to the power generation device through a transmission device; the wind-facing device is arranged 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 group and a bevel gear group; the forward-rotating wind wheel group is composed of a wind wheel with a left-tilted rotating blade and a shaft coaxially fixed to the wind wheel; the reverse-rotating wind wheel group is composed of a wind wheel with a right-tilted rotating blade and a shaft coaxially fixed to the wind wheel; the forward-rotating wind wheel group and the reverse-rotating wind wheel group are respectively connected to the radial through holes on both sides of the middle part of the top seat through axially symmetrical rotation, and one end of the shaft located in the top seat is coaxially fixed to a sprocket; the bevel gear group is composed of a bevel gear and a shaft coaxially fixed to the bevel gear; the bevel gear groups are respectively connected to the two lower parts of the rotating sleeve through shaft rotation. The radial through hole on the side, and one end of the shaft located in the rotating sleeve is coaxially connected with a sprocket; the sprockets at the inner ends of the forward wind wheel group and the reverse wind wheel group are respectively connected to the sprockets at the inner ends of the bevel gear groups on both sides through transmission chains in a one-to-one correspondence; the bevel gear group is composed of a bevel gear and a shaft coaxially connected to the bevel gear and a large gear coaxially connected to the bottom of the shaft; the bevel gear is meshed with the bevel gears on both sides at the same time, and its shaft is rotatably connected to the axial through hole of the partition, and its large gear is located below the partition; the rotating shaft at the lower end of the rotating sleeve is coaxially connected to the bevel gear group; the input end of the power generation device is meshed 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; and the input shaft of the speed increaser is coaxially keyed to the pinion.

[0017] Furthermore, the wind-control device includes gears, an electric motor, a battery, two cross pins, two inner conductors, three outer conductors, an insulating disk, a copper ring, an insulating ring, a weather vane, a copper rod, a vertical pin, two conductive rings, an insulating sleeve and four springs; the weather vane is rotatably connected to the small axial through hole at the top of the top seat, and the lower end of the weather vane is fixedly connected to the insulating ring arranged in the circular hole cavity; the insulating disk is coaxially fixedly connected to the inside of the circular hole cavity; the copper ring is coaxially fixedly connected to the inner side of the insulating disk; the symmetrical insulating arcs at both ends of the insulating disk are located above the radial through hole of the top seat, and form a power-on and power-off circular ring with the copper ring; a radial through hole is arranged inside the insulating ring, and the copper rod is slidably connected to the radial through hole of the insulating ring; a spring is arranged 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 disk is provided with an axial through hole, 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, and its upper A spring is provided between the end and the insulating disk; 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 are axially spaced a certain distance apart; a transverse through hole is provided on one side of the upper part of the tower, an insulating plate is fixedly connected to the outer side of the transverse through hole, two upper and lower through holes are provided on the insulating plate, and two transverse pins are slidably connected to the two through holes on the insulating plate respectively; a spring is provided between the inner end of the transverse pin and the insulating plate, and the inner end of the transverse pin is elastically in contact with the outer circle of the conductive ring respectively; an inner wire connects a copper ring and a conductive ring, another inner wire connects a vertical pin and another conductive ring, an outer wire connects a transverse pin and a battery, another outer wire connects another transverse 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, the output shaft of the motor is coaxially keyed with the 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 group; the tensioning wheel group includes a tensioning wheel, a connecting rod, a screw and a tensioning spring; one end of the connecting rod is rotationally connected to one end of the tensioning wheel and the screw at the same time; the tensioning wheel contacts one side of the transmission chain; the other end of the connecting rod is rotationally 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, an oil pipe and oil; the oil pump is fixedly connected to one side of the radial platform of the tower; the oil is arranged inside the lower cylindrical structure of the tower; the oil pump is connected to the oil through an oil suction pipe, and is connected to the connection between each gear pair and the 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 is composed of a rotating shaft and a wind vane fixedly connected to the upper end of the rotating shaft and coplanar with each other; the wind vane is rotatably connected to the small through hole at the top end of the top seat through its rotating shaft, and the lower end of the rotating shaft is fixedly connected to the insulating ring.

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

[0022] 1. The top of the tower has a simple structure, small bearing capacity, low center of gravity of the whole machine, 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 oil supply system, heat dissipation device and braking device (not involved in the present invention) can also be installed at the lower end of the tower. Therefore, the installation, adjustment, lubrication and sealing process of the key components of the transmission device are relatively easy, and the installation, wiring, power distribution and electronic control of the generator are simple and convenient. There is no need to set up a maintenance elevator, which reduces maintenance costs. Since the top seat and the rotating sleeve are connected with a sliding pin, the top seat only rotates with the rotating sleeve, so the top of the tower does not bear the deadweight load of the rotating sleeve and the transmission device.

[0023] 2. The dual wind rotor transmission device has a low center of gravity, good stability and safety. The eccentric rotation of the wind rotor and the swing of the blades alone will not aggravate the tower swing, nor cause resonance.

[0024] 3. The wind device adopts a simple, safe and reliable mechanical system. The wind vane shaft is connected to the top seat, driving the insulating disk and copper rod to rotate with the wind direction. The ring formed by the copper arc and the insulating arc is fixed to the top seat. The copper rod is in elastic contact with the ring and the vertical pin, forming a reliable mechanical rotary switch, which connects / disconnects the battery and motor circuit through the weak current conductive ring to realize the wind wheel facing the wind. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 for Figure 1 Schematic diagram of AA structure in;

[0027] Figure 3 It is a schematic diagram of the side cross-sectional structure of the present invention.

[0028] Among them, the figure markings are: 1-tower; 2-power generation device; 3-bevel gear set; 4-bevel gear set; 5-lubricating oil; 6-rotor; 7-transmission chain; 8-gear; 9-motor; 10-battery; 11-cross pin; 12-top seat; 13-conducting wire; 14-insulating disk; 15-copper ring; 16-insulating ring; 17-wind wheel group; 18-weather 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 DESCRIPTION

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0031] See attached Figure 1-3 The present invention provides a low-center-of-gravity transmission self-facing wind double wind turbine generator set, comprising a tower 1, a rotating sleeve 6, a top seat 12, a wind-facing device, a wind turbine set 17, a transmission device and a generator device;

[0032] The tower frame 1 is a hollow two-stage stepped cylindrical structure, and the diameter of the lower cylindrical structure is larger than that of the upper cylindrical structure; a radial platform is formed between the two cylindrical structures; an upper inner hole is provided on the top of the upper cylindrical structure; a partition is provided on the lower inner side of the lower cylindrical structure, and an axial through hole is opened on the partition; a boss seat connected to the tower frame is provided on one side of the bottom; an oil chamber 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 hole cavity is arranged on the inner upper part, radial through holes are symmetrically opened on both sides of the middle part, and a large through hole is opened at the bottom; the lower end surface of the top seat 12 is provided with axial pin holes I evenly distributed around the circumference; 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 bottom seal; the upper end surface of the rotating sleeve 6 is provided with axial pin holes II uniformly distributed around the circumference, and the pin holes II correspond to the pin holes I one by one; the upper outer wall of the rotating sleeve 6 is provided with an outer circular groove; a circumferential through hole is provided in the middle of one side wall of the rotating sleeve 6, and an inner inclined plate is provided on the inner wall on the side corresponding to the circumferential through hole; a ring gear is coaxially fixedly connected to the outer circumference of the middle and lower part of the rotating sleeve 6, and radial through holes parallel to the circumferential through hole are symmetrically provided on the two side walls of its lower part, and the radial through holes on both sides of the lower part of the rotating sleeve 6 are respectively 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 arranged as a frustoconical structure, and its lower end is coaxially fixedly connected to a rotating shaft.

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

[0036] The wind wheel groups 17 are provided with two groups, one of which is forward rotating and the other is reverse rotating. The forward rotating wind wheel group 17 and the reverse rotating wind wheel group 17 are respectively symmetrically rotated and connected on both sides of the middle of the top seat 12; the power generation device is arranged above the boss seat at the bottom of the tower 1; the wind wheel groups 17 on both sides are connected to the power generation device through a transmission device; the wind facing device is arranged 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 wind wheel set 17 is composed of a wind wheel with a left-tilted rotating blade and a shaft coaxially fixed to the wind wheel; the reverse wind wheel set 17 is composed of a wind wheel with a right-tilted rotating blade and a shaft coaxially fixed to the wind wheel; the forward and reverse wind wheel sets 17 are respectively connected to the radial through holes on both sides of the middle part of the top seat 12 by axial symmetrical rotation, and one end of the shaft located in the top seat 12 is coaxially fixedly connected to the sprocket; the bevel gear set 4 is composed of a bevel gear and a shaft coaxially fixedly connected to the bevel gear; the bevel gear set is respectively connected to the radial through holes on both sides of the lower part of the rotating sleeve 6 by axial rotation, and one end of the shaft located in the rotating sleeve 6 is coaxially fixedly connected to the sprocket; the sprockets at the inner ends of the forward and reverse wind wheel sets 17 are respectively connected to the radial through holes on both sides of the lower part of the rotating sleeve 6 by axial rotation, and the sprockets are coaxially fixedly connected to the sprocket at one end; the sprockets at the inner ends of the forward and reverse wind wheel sets 17 are respectively connected to the radial through holes on both sides of the lower part of the rotating sleeve 6 by axial rotation. 7 is connected to the sprockets at the inner ends of the bevel gear sets 4 on both sides in a one-to-one correspondence; the transmission chain 7 can also be replaced by a transmission belt; for wind turbines with super-high towers, the transmission chain 7 can also be replaced by a plurality of sprockets connected in series; the bevel gear set 3 is composed of a bevel gear and a shaft coaxially fixed to the bevel gear and a large gear coaxially fixed to the bottom of its shaft; the bevel gear is meshed with the bevel gears on both sides at the same time, and its shaft is rotationally connected to the axial through hole of the partition, and its large gear is located below the partition; the rotating shaft at the lower end of the rotating sleeve 6 is coaxially 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 gear, and meshes with the large gear at the bottom of the bevel gear set 3 through the pinion gear.

[0038] The wind device comprises a gear 8, an electric motor 9, a battery 10, two transverse pins 11, five wires 13, an insulating disk 14, a copper ring 15, an insulating ring 16, a weather vane 18, a copper rod 19, a vertical pin 20, two conductive rings 22, an insulating sleeve 23 and four springs 26; the weather vane 18 is composed of a rotating shaft and a wind vane fixedly connected to the upper end of the rotating shaft and coplanar with each other; the wind vane 18 is rotatably connected to the small through hole at the top of the top seat 12 through its rotating shaft, and the lower end of the rotating shaft is fixedly connected to the insulating ring 16 arranged in the circular hole cavity; the insulating disk 14 is coaxially fixedly connected to the inner wall of the circular hole cavity; the copper ring 15 is coaxially fixedly connected to the inner ring of the insulating disk 14; Insulating arcs are symmetrically arranged at both ends of the inner ring of the insulating disk 14, and the insulating arcs are located above the radial through holes of the top seat 12, and form a power-on and power-off circular ring with the copper ring 15; radial through holes are arranged inside the insulating ring 16, and the copper rod 19 is slidably connected with the radial through holes 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 arranged between the end of the copper rod 19 and the outer wall of the insulating ring 16; an axial through hole is arranged in the middle of the insulating disk 14, and a vertical pin 20 is slidably connected in its axial through hole, and the upper end of the vertical pin 20 is in elastic contact with the copper rod 19, and a spring 26 is also arranged between the upper end of the vertical pin 20 and the disk surface of the insulating disk 14 Spring 26; the insulating sleeve 23 is fixedly connected to the outer circle groove of the rotating sleeve 6; the two conductive rings 22 are coaxially fixedly connected to the outer circle of the insulating sleeve 23 and are axially spaced a certain distance; a transverse through hole is opened on the upper side wall of the cylindrical structure of the upper section of the tower 1, and an insulating plate is fixedly connected to the outer side of the transverse through hole, and two upper and lower through holes are opened on the insulating plate, and the two transverse pins 11 are respectively corresponding to the two through holes on the insulating plate for sliding connection; the inner ends of the two transverse pins 11 are elastically contacted with the outer circles of the two conductive rings 22 in a one-to-one correspondence; and a spring 26 is provided between the inner ends of the transverse pins 11 and the insulating plate; a through hole is opened between the copper ring 15 and a conductive ring 22 The vertical pin 20 and another conductive ring 22 are connected by a wire 13; a horizontal pin 11 and a battery 10 are connected by a wire 13, and another horizontal pin 11 and a motor 9 are connected by a wire 13; the battery 10 and the motor 9 are connected by a wire 13; the motor 9 is fixedly connected to one side of the radial platform of the tower 1, and the battery 10 and the motor 9 are fixedly connected to the tower on the upper side; the output shaft of the motor 9 is coaxially keyed with the gear 8, and the gear 8 is located on the upper inner side of the cylindrical structure of the lower section of the tower 1 and meshes with the ring gear on the outer side of the rotating sleeve 6.

[0039] In this embodiment, the generator set further includes a tensioning wheel group; the tensioning wheel group includes a tensioning wheel 24, a connecting rod 25, a screw 27 and a tensioning spring 26; one end of the connecting rod 25 is rotatably connected to the tensioning wheel 24 and one end of the screw 27 at the same time; the tensioning wheel 24 is in contact with 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 with a nut, and a tensioning spring 26 is provided between the nut and the inner inclined plate of the rotating sleeve 6. The pressure of the tensioning spring 26 can drive the tensioning wheel 24 to roll in contact with the transmission chain 7, and the tension of the transmission 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, an oil pipe and a 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 arranged 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 between each gear pair and the rotating pair through an oil supply pipe; the lubricating oil 5 is in contact with the bevel gear set 4, the sprocket, the bevel gear set 3 and the pinion.

[0041] The working principle of the present invention is:

[0042] The wind wheel groups 17 on both sides that rotate forward and reverse can transmit wind power to the power generation device 2 through the low-center-of-gravity transmission device, thereby driving the power generation device 2 to generate electricity.

[0043] The wind vane 18 at the windward position rotates with the wind direction, thereby driving the insulating ring 16 and the copper rod 19 to rotate relative to the top seat 12. When the copper rod 19 contacts the copper ring 15, the circuit of the motor 9 and the battery 10 is connected through the conductive ring 22. At this time, the motor 9 is powered, and drives the rotating sleeve 6 through the gear pair to drive the top seat 12 and the forward wind wheel group and the reverse wind wheel group 17 to rotate 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 wind wheel group and the reverse wind wheel group 17 are in the windward position, and the de-energized motor 9 stops driving the rotating sleeve 6 and the top seat 12 to rotate, realizing the automatic windward facing of the wind wheel.

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

[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 it to the rotating pair of the forward rotating wind wheel group and the reverse rotating wind wheel group 17 through the chain drive, and supplies the lubricating oil 5 in the oil chamber to the gear pair and each rotating pair through the oil pump 28 and the oil pipe.

[0046] Matters not described in detail in the present invention are known in the art.

[0047] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A low-center-of-gravity transmission self-facing wind double wind turbine generator set, characterized in that: The generator set comprises a tower, a rotating sleeve, a top seat, a wind-facing device, a forward-rotating wind rotor group, a reverse-rotating wind rotor group, a transmission device and a generator device; The tower is a hollow two-stage stepped cylindrical structure, and the diameter of the lower cylindrical structure is larger than that of the upper cylindrical structure; a radial platform is formed between the two cylindrical structures; an upper inner hole is arranged on the top of the upper cylindrical structure; a partition is arranged on the inner lower part of the lower cylindrical structure, and an axial through hole is opened on the partition; a boss seat connected to the tower is arranged on one side of the bottom; The top seat is a cylindrical shell, with a small through hole coaxially opened at the top, a circular hole cavity arranged at the inner upper part, radial through holes symmetrically opened on both sides of the middle part, and a large through hole opened at the bottom; the lower end surface of the top seat is provided with axial pin holes I evenly distributed around the circumference; the lower end of the top seat is correspondingly connected to the inner hole on the top of the tower frame for rotation; The rotating sleeve is a cylindrical structure with a bottom seal, and its upper end surface is provided with axial pin holes II uniformly distributed around the circumference, and the pin holes II correspond to the pin holes I one by one; the upper outer wall of the rotating sleeve is provided with an outer circular groove, and a circumferential through hole is provided in the middle of one side wall, and an inner inclined plate is provided on the inner wall on the side corresponding to the circumferential through hole; a ring gear is coaxially fixedly connected to the outer circumference of the middle and lower part of the rotating sleeve, and radial through holes parallel to the circumferential through hole are symmetrically provided on the two side walls of the lower part, and the radial through holes on both sides of the lower part of the rotating sleeve are respectively 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 arranged as a frustoconical structure, and its lower end is coaxially fixedly connected to a rotating shaft; The rotating sleeve is coaxially arranged inside the tower, and the pin hole II on the upper end surface thereof is connected to the corresponding pin hole I on the lower end surface of the top seat by a sliding pin; the ring gear outside the rotating sleeve is located at the inner upper part of the lower cylinder of the tower; the rotating shaft at the lower end of the rotating sleeve extends to the bottom of the partition; The forward-rotating wind wheel group and the reverse-rotating wind wheel group are respectively symmetrically connected to the two sides of the middle of the top seat; the power generation device is arranged above the boss seat at the bottom of the tower; the forward-rotating wind wheel group and the reverse-rotating wind wheel group are connected to the power generation device through a transmission device; the wind-facing device is arranged between the top of the top seat and the rotating sleeve and the side wall of the tower.

2. The low-center-of-gravity transmission self-facing wind dual-turbine generator set according to claim 1, characterized in that: The transmission device includes a transmission chain, a sprocket, a bevel gear set and a bevel gear set; the forward wind wheel set is composed of a wind wheel with a left-tilted rotating blade and a shaft coaxially fixed to the wind wheel; the reverse wind wheel set is composed of a wind wheel with a right-tilted rotating blade and a shaft coaxially fixed to the wind wheel; the forward wind wheel set and the reverse wind wheel set are respectively connected to the radial through holes on both sides of the middle part of the top seat through axial symmetrical rotation, and one end of the shaft located in the top seat is coaxially fixed to the sprocket; the bevel gear set is composed of a bevel gear and a shaft coaxially fixed to the bevel gear; the bevel gear sets are respectively connected to the radial through holes on both sides of the lower part of the rotating sleeve through shaft rotation. A sprocket is coaxially fixedly connected to one end of the radial through hole and its shaft is located in the rotating sleeve; the sprockets at the inner ends of the forward wind wheel group and the reverse wind wheel group are respectively connected to the sprockets at the inner ends of the bevel gear groups on both sides through transmission chains in a one-to-one correspondence; the bevel gear group is composed of a bevel gear and a shaft coaxially fixed to the bevel gear and a large gear coaxially fixed to the bottom of the shaft; the bevel gear is meshed with the bevel gears on both sides at the same time, and its shaft is rotationally connected to the axial through hole of the partition, and its large gear is located below the partition; the rotating shaft at the lower end of the rotating sleeve is coaxially rotationally connected to the bevel gear group; the input end of the power generation device is meshed with the large gear through a small gear.

3. A low-center-of-gravity transmission self-facing wind dual-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 to the input end of the generator; the input shaft of the speed increaser is coaxially key-connected with the pinion.

4. The low-center-of-gravity transmission self-facing wind dual-turbine generator set according to claim 1, characterized in that: The wind-control device comprises a gear, an electric motor, a battery, two transverse pins, two inner conductors, three outer conductors, an insulating disk, a copper ring, an insulating ring, a weather vane, a copper rod, a vertical pin, two conductive rings, an insulating sleeve and four springs; the weather vane is rotatably connected to the small axial through hole at the top of the top seat, and the lower end of the weather vane is fixedly connected to the insulating ring arranged in the circular hole cavity; the insulating disk is coaxially fixedly connected to the inside of the circular hole cavity; the copper ring is coaxially fixedly connected to the inner side of the insulating disk; the symmetrical insulating arcs at both ends of the insulating disk are located above the radial through hole of the top seat, and form a power-on and power-off circular ring with the copper ring; a radial through hole is arranged inside the insulating ring, and the copper rod is slidably connected to the radial through hole of the insulating ring; a spring is arranged 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 disk is provided with an axial through hole, 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, and its upper end is Springs are provided between the insulating disks; 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 are axially spaced a certain distance apart; a transverse through hole is provided on one side of the upper part of the tower, an insulating plate is fixedly connected to the outer side of the transverse through hole, two upper and lower through holes are provided on the insulating plate, and two transverse pins are slidably connected to the two through holes on the insulating plate respectively; springs are provided between the inner ends of the transverse pins and the insulating plates, and the inner ends of the transverse pins are elastically in contact with the outer circles of the conductive rings respectively; an inner wire connects a copper ring and a conductive ring, another inner wire connects a vertical pin and another conductive ring, an outer wire connects a transverse pin and a battery, another outer wire connects another transverse 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, the output shaft of the motor is coaxially keyed with the gear, the gear is located inside the tower and meshes with the outer ring gear of the rotating sleeve.

5. The low-center-of-gravity transmission self-facing wind dual-wind turbine generator set according to claim 2, characterized in that: The generator set also includes a tensioning wheel group; the tensioning wheel group includes a tensioning wheel, a connecting rod, a screw and a tensioning spring; one end of the connecting rod is rotationally connected to the tensioning wheel and one end of the screw at the same time; the tensioning wheel contacts one side of the transmission chain; the other end of the connecting rod is rotationally 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.

6. The low-center-of-gravity transmission self-facing wind dual-turbine generator set according to claim 3 is characterized by: The generator set also includes an oil pump lubrication system; the oil pump lubrication system includes an oil pump, an oil pipe and oil; the oil pump is fixedly connected to one side of the radial platform of the tower; the oil is arranged inside the lower cylindrical structure of the tower; the oil pump is connected to the oil through an oil suction pipe, and is connected to the connection between each gear pair and the rotating pair through an oil supply pipe; the oil is in contact with the bevel gear set, sprocket, bevel gear set and pinion.

7. The low-center-of-gravity transmission self-facing wind dual-wind turbine generator set according to claim 4, characterized in that: The wind vane is composed of a rotating shaft and a wind vane fixedly connected to the upper end of the rotating shaft and coplanar with each other; the wind vane is rotatably connected to the small through hole at the top end of the top seat through its rotating shaft, and the lower end of the rotating shaft is fixedly connected to the insulating ring.

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