Off-axis blade and double-round-frame combined high-efficiency breeze constant-speed generator

Abstract

The utility model discloses an off-axis blade and double-round-frame combined type high-efficiency breeze uniform-speed generator, and relates to the technical field of wind driven generators, the off-axis blade and double-round-frame combined type high-efficiency breeze uniform-speed generator comprises a supporting tower body, a rotating disc is fixedly mounted at the top end of the supporting tower body, a machine bin is fixedly mounted at the top end of the rotating disc, a horizontal shaft is rotatably arranged at the front end of the machine bin, and a wind wheel is fixedly arranged at the front end of the horizontal shaft; the rear end of the horizontal shaft is connected with a speed increaser, the output end of the speed increaser is connected with a generator, a wind direction and wind speed controller is arranged outside the machine room, the wind wheel comprises at least three sets of blades, an inner round frame, an inner round frame installation frame and an outer round frame, the inner round frame installation frame is fixedly connected with the horizontal shaft, and the inner round frame is fixedly installed outside the inner round frame installation frame. The outer circular frame is fixedly installed outside the inner circular frame, the blades are rotatably installed on the outer circular frame, and the outer circular frame is provided with elastic pulling pieces used for preventing the blades from rotating. The anti-typhoon performance of the power generation device is effectively improved, the production and maintenance cost can be saved, and hundreds of years are really achieved.

Description

Technical Field

[0001] The present application relates to the technical field of wind turbines, and in particular to a high-efficiency micro-wind uniform-speed generator combined with off-axis blades and double circular frames. Background Art

[0002] Wind turbines are electrical equipment that converts wind energy into mechanical work, which drives the rotor to rotate and finally outputs alternating current. Wind turbines are generally composed of wind rotors, generators (including devices), direction regulators (tail fins), towers, speed limit safety mechanisms, and energy storage devices. At present, large three-blade horizontal axis wind turbines are widely used in my country.

[0003] Traditional large three-blade horizontal axis wind turbines have average ability to resist strong typhoons. During typhoon weather, due to excessive wind resistance, the wind resistance cannot be released in time, which often causes blade breakage or support frame collapse, resulting in huge economic losses. Utility Model Content

[0004] In order to improve the ability of large-scale horizontal-axis wind turbines to resist strong typhoons, the present application provides a high-efficiency light wind constant-speed generator combined with off-axis blades and double circular frames.

[0005] The present application provides a high-efficiency breeze constant-speed generator combined with an eccentric blade and a double circular frame, which adopts the following technical solution:

[0006] A high-efficiency breeze constant-speed generator combined with eccentric blades and double circular frames, comprising a supporting tower body, a turntable fixedly mounted on the top of the supporting tower body, a cabin fixedly mounted on the top of the turntable, a horizontal axis rotatably arranged at the front end of the cabin, a wind wheel fixedly mounted at the front end of the horizontal axis, a speed increaser connected to the rear end of the horizontal axis, a generator connected to the output end of the speed increaser, a wind direction and speed controller for monitoring wind direction and speed and controlling the rotation of the turntable arranged on the outside of the cabin, the wind wheel comprising at least three groups of blades, an inner circular frame, an inner circular frame mounting frame and an outer circular frame, the inner circular frame mounting frame being fixedly connected to the horizontal axis, the inner circular frame being fixedly mounted on the outside of the inner circular frame mounting frame, the outer circular frame being fixedly mounted on the outside of the inner circular frame, the blades being rotatably mounted on the outer circular frame, and an elastic puller for hindering the rotation of the blades is arranged on the outer circular frame.

[0007] By adopting the above technical solution, under wind speed conditions lower than that at which the generator reaches full load, the blades can be pulled by the elastic tensioner to maintain a certain angle with the horizontal axis and generate electricity normally. In strong typhoon weather, the blades can be rotated to be parallel to the horizontal axis, so that when a strong typhoon comes, the wind resistance can be released in time, thereby improving the wind wheel's ability to resist strong typhoons.

[0008] Optionally, the elastic pulling member is a tension spring, one end of the tension spring is fixedly connected to the outer circular frame, and the other end of the tension spring is fixedly connected to one side of the blade.

[0009] Optionally, a brake assembly is provided on the wind wheel, and when the generator reaches full load, the brake assembly can drive the blades to rotate until the blades are parallel to the horizontal axis.

[0010] By adopting the above technical solution, after the brake assembly drives the blades to be parallel to the horizontal axis, the wind flow can pass through the wind wheel to the greatest extent, thereby reducing wind resistance and preventing the wind wheel from spinning wildly.

[0011] Optionally, the brake assembly includes a brake cable and a winch for reeling in and out the brake cable, the movable end of the brake cable is fixedly connected to the side of the blade facing away from the elastic puller, and the winch is controlled by a wind direction and wind speed controller.

[0012] By adopting the above technical solution, the wind speed when the generator reaches full load is tested and set in advance. When strong winds come and the wind speed reaches the value when the generator is fully loaded, the wind direction and wind speed controller drives the winch to reel in the brake cable, so that the blades rotate to be parallel to the horizontal axis, thereby performing wind discharge braking.

[0013] Optionally, each group of blades consists of two blades and a connecting lock for connecting the two blades into one, the two blades are installed on both sides of the outer circular frame, the outer circular frame is fixed with a mounting column, the blades are provided with an eccentric axis, and the eccentric axis is rotatably connected to the mounting column.

[0014] By adopting the above technical solution, compared with traditional wind turbines, the transportation and installation of blades can be facilitated, thereby easily realizing large-scale construction of equipment.

[0015] Optionally, an extension line of the eccentric axis deviates from a center of a blade.

[0016] Optionally, at least three fixed steel ring straight pull wires are arranged between the outer circular frame and the inner circular frame for connection, and the multiple fixed steel ring straight pull wires, the inner circular frame, the outer circular frame and the multiple groups of blades are all centrally symmetrically distributed with the horizontal axis as the center.

[0017] By adopting the above technical solution, a plurality of fixed steel ring straight pull wires are used to pull each other. The number of fixed steel ring straight pull wires can be determined according to the size of the wind wheel and the wind conditions in the use area. While meeting the structural strength of the wind wheel, the use of steel can be reduced, thereby reducing the dead weight and wind resistance of the wind wheel.

[0018] Optionally, a reinforcement seat is fixedly provided on the top of the cabin, and a reinforcement member for obliquely supporting both ends of the cabin is provided on the reinforcement seat.

[0019] By adopting the above technical solution, the tension members are strengthened to provide oblique support to both ends of the nacelle, which can effectively improve the device's resistance to strong typhoons and its stability during operation.

[0020] In summary, the present application includes at least one of the following beneficial effects:

[0021] 1. The structure of the wind wheel in this case adopts the method of inner circular frame, outer circular frame and multiple sets of cable. The number of blades and cable can be determined according to the size of the wind wheel and the wind conditions in the use area. It can ensure that the wind wheel meets the structural strength while reducing the use of steel. At the same time, cable is used instead of steel to reduce the wind resistance of the wind wheel as much as possible and improve the device's anti-typhoon effect;

[0022] 2. In this case, elastic pullers and brake components are used to control the swing direction of the blades. When there is a strong typhoon, the engine is fully loaded. At this time, the brake component drives the blades parallel to the horizontal axis, which can release wind resistance to the greatest extent and prevent the wind wheel from spinning. It can not only effectively avoid excessive wind resistance causing blade breakage or support tower collapse, but also prevent the engine from being damaged due to long-term load operation, effectively improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure that reflects the off-axis in this embodiment;

[0024] Figure 2 is a schematic diagram of the structure of the wind wheel in this embodiment;

[0025] Figure 3 yes Figure 1 The enlarged schematic diagram of point A in the middle;

[0026] Figure 4 yes Figure 2 A magnified schematic diagram of point B in the middle.

[0027] Explanation of the reference numerals: 1. Support tower body; 11. Turntable; 2. Cabin; 3. Horizontal axis; 4. Wind wheel; 41. Blades; 411. Sub-blades; 412. Connecting lock; 42. Inner circular frame; 43. Inner circular frame mounting bracket; 44. Outer circular frame; 45. Elastic pull member; 46. Mounting column; 47. Eccentric axis; 48. Fixed steel ring straight pull wire; 5. Speed ​​increaser; 6. Generator; 7. Wind direction and speed controller; 8. Brake assembly; 81. Brake pull wire; 82. Winch; 9. Reinforced seat; 91. Reinforced pull member. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model provides the following technical solutions: Figure 1 The high-efficiency breeze constant-speed generator combined with eccentric blades and double circular frames includes a supporting tower body 1, and a turntable 11 is fixedly installed on the top of the supporting tower body 1; in this case, the supporting tower body 1 adopts the tower crane commonly used in current construction sites, which includes a tower base, a standard tower crane section and a climbing frame, and the turntable 11 is fixedly installed on the top of the climbing frame.

[0030] The turntable 11 adopts a large electric turntable 11, and a cabin 2 is fixedly installed on the top of the turntable 11. A reinforcement seat 9 is fixedly provided on the top of the cabin 2. The reinforcement seat 9 is provided with a reinforcement member 91 for obliquely supporting the two ends of the cabin 2. The reinforcement member 91 adopts a steel wire rope, one end of the steel wire rope is fixedly connected to the top of the reinforcement seat 9, and the other end is fixedly connected to the end of the cabin 2.

[0031] A horizontal axis 3 is rotatably provided at the front end of the cabin 2. In the present case, the horizontal axis 3 is rotatably provided on the cabin 2 through a bearing, and the rear end of the horizontal axis 3 extends into the interior of the cabin 2; a wind wheel 4 is fixedly provided at the front end of the horizontal axis 3, and the rear end of the horizontal axis 3 is connected to a speed increaser 5 through a coupling, and the output end of the speed increaser 5 is connected to a generator 6 through a coupling, and a wind direction and speed controller 7 for monitoring wind direction and speed and controlling the rotation of a turntable 11 is provided outside the cabin 2, so that the direction of the wind wheel 4 can be adjusted according to the real-time wind direction.

[0032] Reference Figure 1 and Figure 2 The wind wheel 4 includes at least three groups of blades 41, an inner circular frame 42, an inner circular frame mounting frame 43 and an outer circular frame 44. The inner circular frame mounting frame 43 is fixedly connected to the horizontal axis 3, the inner circular frame 42 is fixedly mounted on the outside of the inner circular frame mounting frame 43, and the outer circular frame 44 is fixedly mounted on the outside of the inner circular frame 42; at least three fixed steel ring straight pull wires 48 are arranged between the outer circular frame 44 and the inner circular frame 42 for connection, so that multiple fixed steel ring straight pull wires 48, the inner circular frame 42, the outer circular frame 44 and multiple groups of blades 41 are all centrally symmetrically distributed with the horizontal axis 3 as the center; specifically, the fixed steel ring straight pull wire 48 in this case adopts a steel wire rope extending radially along the horizontal axis 3, and multiple oblique mutually pulling steel wire ropes can also be added to connect the outer circular frame 44 and the inner circular frame 42, thereby improving the strength and stability of the wind wheel 4 structure. In this case, the number of blades 41 and the number of pull wires can be determined according to the size of the wind wheel 4 and the wind conditions in the use area.

[0033] Reference Figure 1 and Figure 3 , multiple groups of blades 41 are rotatably mounted on the outer circular frame 44, each group of blades 41 consists of two split blades 411 and a connecting lock 412 for connecting the two split blades 411 into one body, and the two split blades 411 are mounted on both sides of the outer circular frame 44. In this case, an eccentric shaft 47 is provided on the split blade 411, and the eccentric shaft 47 adopts a hollow cylindrical pipe, and the extension line of the eccentric shaft 47 deviates from the center of the split blade 411; both sides of the split blade 411 have flanges, and the connecting lock 412 specifically adopts bolts. During installation, the bolts pass through the flanges on the two split blades 411, and the two split blades 411 are locked by the bolts, so that the two split blades 411 are connected into one body. A mounting column 46 is fixedly provided on the outer circular frame 44, and the eccentric shaft 47 is rotatably sleeved on the mounting column 46 through a bearing, so as to realize the rotatable connection between the eccentric shaft 47 and the mounting column 46. In addition, the eccentric axis 47 can be connected to the inner circular frame 42 by a steel wire rope. The specific connection between the eccentric axis 47 and the steel wire rope can be welded, tied or connected reliably using any connecting parts, thereby assisting the positioning of the blade 41 and further improving the stability of the blade 41 during operation.

[0034] Reference Figure 2 and Figure 4 , an elastic puller 45 for preventing the blade 41 from rotating is provided on the outer circular frame 44; specifically, the elastic puller 45 in this case adopts a tension spring, one end of the tension spring is fixedly connected to the outer circular frame 44, and the other end of the tension spring is fixedly connected to one side of the blade 41.

[0035] The wind wheel 4 is provided with a brake assembly 8. When the generator 6 reaches full load, the brake assembly 8 can drive the blades 41 to rotate until the blades 41 are parallel to the horizontal axis 3. Specifically, the brake assembly 8 in this case includes a brake cable 81 and a winch 82 for reeling in and unreeling the brake cable 81. The brake cable 81 is made of steel wire. The winch 82 is fixedly mounted on the outer circular frame 44. The winch 82 is controlled by the wind direction and wind speed controller 7. The movable end of the brake cable 81 is fixedly connected to the side of the blade 41 away from the elastic pull member 45. By testing and setting the wind speed when the generator 6 reaches full load in advance, when strong wind comes and the wind speed reaches the value when the generator 6 is fully loaded, the wind direction and wind speed controller 7 drives the winch 82 to reel in the brake cable 81, so that the blade 41 rotates to be parallel to the horizontal axis 3, thereby performing a wind-discharging brake.

[0036] In this case, the plurality of blades 41 are connected to each other in pairs by steel wire ropes, and only one winch 82 is required to pull the brake cable 81 to drive the plurality of blades 41 to rotate synchronously in the same direction.

[0037] The implementation principle of the high-efficiency breeze constant-speed generator combined with eccentric blades and double circular frames in the embodiment of the present application is:

[0038] When a strong typhoon comes, when the wind direction and wind speed controller 7 detects that the wind speed reaches the value of the full load of the generator 6, the wind direction and wind speed controller 7 can drive the winch 82 to reel in the brake cable 81, so that the blade 41 rotates to be parallel to the horizontal axis 3, thereby releasing the wind resistance; when the wind speed is lower than the above value, the wind direction and wind speed controller 7 drives the winch 82 to unwind the brake cable 81, and the generator 6 can automatically enter normal power generation operation.

[0039] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high-efficiency breeze constant-speed generator combined with an off-axis blade and a double circular frame, comprising a support tower (1), a rotating disk (11) being fixedly mounted on the top of the support tower (1), a cabin (2) being fixedly mounted on the top of the rotating disk (11), a horizontal shaft (3) being rotatably arranged at the front end of the cabin (2), a wind wheel (4) being fixedly arranged at the front end of the horizontal shaft (3), a speed increaser (5) being connected to the rear end of the horizontal shaft (3), a generator (6) being connected to the output end of the speed increaser (5), a wind direction and wind speed controller (7) being arranged outside the cabin (2) for monitoring wind direction and wind speed and controlling the rotation of the rotating disk (11), characterized in that: The wind wheel (4) comprises at least three groups of blades (41), an inner circular frame (42), an inner circular frame mounting frame (43) and an outer circular frame (44); the inner circular frame mounting frame (43) is fixedly connected to the horizontal shaft (3); the inner circular frame (42) is fixedly mounted on the outside of the inner circular frame mounting frame (43); the outer circular frame (44) is fixedly mounted on the outside of the inner circular frame (42); the blades (41) are rotatably mounted on the outer circular frame (44); and an elastic puller (45) for preventing the blades (41) from rotating is provided on the outer circular frame (44).

2. The high-efficiency breeze constant-speed generator combined with off-axis blades and double circular frames according to claim 1 is characterized by: The elastic pulling member (45) is a tension spring, one end of which is fixedly connected to the outer circular frame (44), and the other end of which is fixedly connected to one side of the blade (41).

3. The high-efficiency breeze constant-speed generator combined with off-axis blades and double circular frames according to claim 1 is characterized in that: The wind wheel (4) is provided with a brake assembly (8), and when the generator (6) reaches full load, the brake assembly (8) can drive the blades (41) to rotate until the blades (41) are parallel to the horizontal axis (3).

4. The high-efficiency breeze constant-speed generator combined with off-axis blades and double circular frames according to claim 3 is characterized by: The brake assembly (8) comprises a brake cable (81) and a winch (82) for reeling in and unreeling the brake cable (81); the movable end of the brake cable (81) is fixedly connected to a side of the blade (41) facing away from the elastic pull member (45); and the winch (82) is controlled by a wind direction and wind speed controller (7).

5. The high-efficiency breeze constant-speed generator combined with off-axis blades and double circular frames according to claim 1 is characterized in that: Each group of blades (41) is composed of two blades (411) and a connecting lock (412) for connecting the two blades (411) into one body. The two blades (411) are mounted on both sides of an outer circular frame (44). A mounting column (46) is fixedly provided on the outer circular frame (44). An eccentric shaft (47) is provided on the blades (411). The eccentric shaft (47) is rotatably connected to the mounting column (46).

6. The high-efficiency breeze constant-speed generator combined with off-axis blades and double circular frames according to claim 5, characterized in that: An extension line of the eccentric axis (47) deviates from the center of the blade (411).

7. The high-efficiency breeze constant-speed generator combined with off-axis blades and double circular frames according to claim 1 is characterized by: At least three fixed steel ring straight pull wires (48) are arranged between the outer circular frame (44) and the inner circular frame (42) for connection, and the plurality of fixed steel ring straight pull wires (48), the inner circular frame (42), the outer circular frame (44) and the plurality of blade groups (41) are all centrally symmetrically distributed with the horizontal axis (3) as the center.

8. The high-efficiency breeze constant-speed generator combined with off-axis blades and double circular frames according to claim 1 is characterized by: A reinforcement seat (9) is fixedly provided on the top of the machine cabin (2), and a reinforcement member (91) for obliquely supporting the two ends of the machine cabin (2) is provided on the reinforcement seat (9).

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