Fixed shaft type large wind power generation equipment

Abstract

The utility model discloses fixed shaft type large wind power generation equipment, and relates to the technical field of wind power generation, the fixed shaft type large wind power generation equipment comprises a supporting tower, a rotating disc is arranged at the top of the supporting tower, a fixed shaft support is arranged at the top of the rotating disc, and one end of the fixed shaft support is rotationally sleeved with a rotating sleeve frame; a wind wheel is fixedly installed on the outer side of the rotating sleeve frame, a generator set is arranged on the fixed shaft support, a gear transmission mechanism used for transmitting power to the generator set is arranged on the rotating sleeve frame, the wind wheel is installed on the fixed shaft support, and large size of the wind wheel can be easily achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, and specifically relates to a fixed-axis large-scale wind power generation device. Background Technique

[0002] The principle of wind power generation is to use wind power to drive the rotation of the windmill blades, and then increase the rotation speed through a speed increaser to promote the generator to generate electricity. At present, most wind energy conversion systems adopt horizontal-axis wind turbines, that is, three blades are installed on a horizontal axis, and rely on the thrust generated by the wind and the slope of the blade's windward surface to drive the rotation of the generator to achieve power generation.

[0003] In the related technology, a Chinese invention patent with the publication number of CN116517774A discloses a wind power engine, which includes a central tower barrel, a turntable, a mounting frame, a wind wheel and a generator set. The mounting frame is installed on the top of the central tower barrel through the turntable, the generator set is arranged inside the mounting frame, and the wind wheel is connected to the generator set through a horizontal axis, thereby realizing wind power generation.

[0004] However, in the above-mentioned related technology, there are still the following problems to be improved:

[0005] 1. The horizontal axis is rotatably installed on the mounting frame through bearings, and there is a certain distance between the wind wheel and the bearings. Under the long-term action of torque, the service life of the bearings is relatively low, and the wind wheel is relatively unstable during long-term use;

[0006] 2. As an important power transmission component, the horizontal axis is rotatably installed on the mounting frame to realize the transmission of mechanical energy. At present, due to the limitations of various technical processes such as the manufacturing and installation of the horizontal axis, and in order to ensure the safety and stability of the overall device, it is difficult to make the size of the horizontal axis too large, so it is difficult to realize the large-scale of wind power generation equipment. Content of the Utility Model

[0007] In order to solve the problems existing in the above-mentioned related technology, the present application provides the following technical solutions:

[0008] A fixed-axis large-scale wind power generation device includes a support tower. A turntable is arranged at the top of the support tower. A fixed-axis support is arranged at the top of the turntable. One end of the fixed-axis support is rotatably sleeved with a rotating sleeve frame. A wind wheel is fixedly installed on the outer side of the rotating sleeve frame. A generator set is arranged on the fixed-axis support. A gear transmission mechanism for transmitting power to the generator set is arranged on the rotating sleeve frame.

[0009] With the above technical solution, the wind wheel drives the rotating sleeve frame to rotate, and the mechanical energy is stably transmitted to the generator set through the gear transmission mechanism to generate electricity. By adopting the rotation of the rotating sleeve frame around the fixed shaft support, compared with the traditional horizontal axis rotation method, even if the fixed shaft is enlarged, the mechanical power can be stably transmitted to the generator set, thus facilitating the enlargement of the wind wheel.

[0010] As a preferred solution of a fixed-shaft large-scale wind power generation device described in this application, wherein: the gear transmission mechanism includes a large driving gear and a small gear that mesh with each other. The large driving gear is fixedly arranged on the rotating sleeve frame, and a mounting seat is fixedly arranged on the fixed shaft support. A transmission shaft is rotatably arranged on the mounting seat, and the transmission shaft is coaxially and fixedly connected with the small gear. The rotational power is transmitted to the generator set through the transmission shaft.

[0011] With the above technical solution, the wind wheel drives the rotating sleeve frame to rotate, thereby driving the large driving gear to rotate, and then driving the small gear and the transmission shaft to rotate synchronously, driving the generator set to generate electricity.

[0012] As a preferred solution of a fixed-shaft large-scale wind power generation device described in this application, wherein: the large driving gear is a circular large tooth ring formed by assembling a plurality of tooth blocks end to end. The tooth blocks are fixedly installed on the rotating sleeve frame through bolts, and the small gear is arranged inside the large driving gear.

[0013] With the above technical solution, the large driving gear is modular, which is not only convenient for the production and manufacturing of the large driving gear, but also for the later maintenance and replacement of the large driving gear.

[0014] As a preferred solution of a fixed-shaft large-scale wind power generation device described in this application, wherein: a speed increaser is further arranged on the fixed shaft support. The input shaft of the speed increaser is connected to the transmission shaft through a coupling, and the output shaft of the speed increaser is connected to the drive shaft of the generator set through a coupling.

[0015] With the above technical solution, the transmission shaft rotating at a low speed is converted into mechanical energy rotating at a high speed through the speed increaser, thereby increasing the rotation speed of the generator set during operation.

[0016] As a preferred solution of a fixed-shaft large-scale wind power generation device described in this application, wherein: a connecting bearing is arranged between the fixed shaft support and the rotating sleeve frame.

[0017] With the above technical solution, the rotating sleeve frame is installed on the fixed shaft support through the bearing, which can effectively reduce the resistance during the rotation of the wind wheel. In addition, installing the bearing at the wind wheel can reduce the wear of the bearing during long-term use, extend the service life of the bearing, and make the wind wheel more stable during long-term use.

[0018] As a preferred solution of a fixed - shaft large - scale wind power generation device described in the present application, wherein: a braking device is provided between the rotating sleeve frame and the fixed - shaft bracket.

[0019] Adopting the above - mentioned technical solution, the braking device can brake the wind turbine, thus facilitating the maintenance of the wind turbine in the later stage.

[0020] As a preferred solution of a fixed - shaft large - scale wind power generation device described in the present application, wherein: the wind turbine includes a wind - turbine circular - frame bracket and a large circular frame, and a plurality of groups of cross - wires are provided between the wind - turbine circular - frame bracket and the large circular frame for connection.

[0021] Adopting the above - mentioned technical solution, the large circular frame is stably fixed on the wind - turbine circular - frame bracket by a plurality of groups of cross - wires. Not only is the structure stable and reliable, but also the overall weight of the wind turbine can be effectively reduced, facilitating the realization of the large - scale of the wind turbine.

[0022] As a preferred solution of a fixed - shaft large - scale wind power generation device described in the present application, wherein: the wind turbine further includes a blade shaft rotatably installed on the large circular frame, and wind - turbine blades are installed on the blade shaft.

[0023] As a preferred solution of a fixed - shaft large - scale wind power generation device described in the present application, wherein: an auxiliary braking device for adjusting the rotation angle of the wind - turbine blades is provided on the wind turbine.

[0024] Adopting the above - mentioned technical solution, when the wind turbine is operating normally, the auxiliary braking device can adjust the windward angle of the wind - turbine blades, so that the generator set reaches the best power - generation state; when facing weather with a relatively certain wind direction in a short time, such as monsoon or strong typhoon, the auxiliary braking device drives the extending direction of the wind - turbine blades to be consistent with the wind direction, thereby effectively releasing the wind resistance, preventing the wind turbine from spinning, and achieving the effect of resisting strong typhoons.

[0025] As a preferred solution of a fixed - shaft large - scale wind power generation device described in the present application, wherein: the auxiliary braking device includes an adjusting wire and a motor for winding and unwinding the adjusting wire. One end of the adjusting wire is wound on the motor, and the other end of the adjusting wire is fixedly connected to the movable end of the wind - turbine blade.

[0026] Adopting the above - mentioned technical solution, by starting the motor to wind and unwind the adjusting wire, the end of the wind - turbine blade is pulled, so that the wind - turbine blade rotates, and thus the angle of the wind - turbine blade is adjusted.

[0027] Compared with the prior art, the present application has at least one of the following beneficial effects:

[0028] Adopt a fixed-axis support. By rotatably arranging a rotating sleeve on the fixed-axis support and installing the wind turbine on the rotating sleeve, the traditional horizontal axis is replaced. Even if the fixed-axis support and the wind turbine are enlarged, the wind turbine can operate stably, enabling the easy realization of the enlargement of wind power generation equipment. At the same time, the problem of easy wear of bearings can be effectively improved, allowing the wind turbine to be used stably for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic side view structure diagram of an embodiment of the present application;

[0030] Figure 2 It is a schematic front view structure diagram of an embodiment of the present application;

[0031] Figure 3 For Figure 1 an enlarged schematic diagram of part A in

[0032] In the figure: 1, support tower; 2, turntable; 3, fixed-axis support; 4, counterweight; 5, rotating sleeve; 6, connecting bearing; 7, limit block; 8, guy wire; 9, wind turbine; 10, wind turbine circular frame support; 11, large circular frame; 12, blade shaft; 13, wind turbine blade; 14, generator set; 15, gear transmission mechanism; 16, large driving gear; 17, small gear; 18, mounting seat; 19, transmission shaft; 20, speed increaser; 21, braking device; 22, auxiliary braking device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] To make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail in conjunction with the attached Figures 1 - 3 drawings.

[0034] This embodiment provides a fixed-axis type large-scale wind power generation device. Please refer to Figure 1 and Figure 2 , the fixed-axis type large-scale wind power generation device includes a support tower 1. A turntable 2 is arranged at the top of the support tower 1. In this embodiment, the support tower 1 and the turntable 2 disclosed in the Chinese utility model patent with the publication number CN219281874U are adopted. A wind direction and wind speed controller (not shown in the figure) is arranged outside the wind power generation device, and the rotation of the turntable 2 is controlled by the wind direction and wind speed controller.

[0035] Refer to Figure 1 and Figure 3, a fixed shaft bracket 3 is provided at the top of the turntable 2, and a counterweight 4 is provided on the fixed shaft bracket 3 to ensure that the fixed shaft bracket 3 is in a horizontal balance state and improve the stability of the wind power generation equipment. In this embodiment, the bracket of the fixed shaft adopts a steel structure cantilever beam commonly used in construction tower cranes. One end of the fixed shaft bracket 3 is rotatably sleeved with a rotating sleeve frame 5, and a connecting bearing 6 is provided between the fixed shaft bracket 3 and the rotating sleeve frame 5.

[0036] Limit blocks 7 are provided on both sides of the rotating sleeve frame 5 and the fixed shaft bracket 3 to limit the connecting bearing 6 and improve the stability of the wind wheel 9 during rotation; in this embodiment, the limit blocks 7 are installed and fixed by bolts, so that it is convenient to disassemble and assemble the limit blocks 7 and facilitate the maintenance and replacement of the connecting bearing 6.

[0037] Refer to Figure 1 and Figure 2 , a wind wheel 9 is fixedly installed on the outside of the rotating sleeve frame 5. The wind wheel 9 includes a wind wheel circular frame bracket 10 and a large circular frame 11. The wind wheel circular frame bracket 10 is fixedly sleeved outside the rotating sleeve frame 5, and multiple groups of mutual pull wires 8 are provided between the wind wheel circular frame bracket 10 and the large circular frame 11 for connection. In this embodiment, each group of mutual pull wires 8 is installed by directly pulling or obliquely pulling multiple steel wires, and multiple groups of mutual pull wires 8 are symmetrically distributed about the center of the wind wheel circular frame bracket 10.

[0038] Refer to Figure 1 and Figure 3 , a generator set 14 is provided on the fixed shaft bracket 3, and a gear transmission mechanism 15 for transmitting power to the generator set 14 is provided on the rotating sleeve frame 5. In this embodiment, the gear transmission mechanism 15 includes a large driving gear 16 and a small gear 17 that mesh with each other. The large driving gear 16 is fixedly provided on the rotating sleeve frame 5. The large driving gear 16 is a circular large tooth ring formed by assembling multiple tooth blocks end to end. The tooth blocks are fixedly installed on the rotating sleeve frame 5 by bolts, and the small gear 17 is provided inside the large driving gear 16. An installation seat 18 is fixedly provided on the fixed shaft bracket 3, and a transmission shaft 19 is rotatably provided on the installation seat 18. The transmission shaft 19 is coaxially and fixedly connected to the small gear 17.

[0039] A speed increaser 20 is also provided on the fixed shaft bracket 3. The input shaft of the speed increaser 20 is connected to the transmission shaft 19 through a universal coupling, and the output shaft of the speed increaser 20 is connected to the drive shaft of the generator set 14 through a universal coupling, so as to transmit the rotational power to the generator set 14 through the transmission shaft 19.

[0040] A braking device 21 is provided between the rotating sleeve frame 5 and the fixed shaft bracket 3. In this embodiment, the braking device 21 adopts the existing disc hydraulic braking method, including a brake caliper and a brake disc. When emergency braking is required, the brake caliper is driven by hydraulic pressure to clamp the brake disc, thereby stopping the wind wheel 9.

[0041] Referring to Figure 2 and Figure 3 , the wind wheel 9 further includes a blade shaft 12 rotatably mounted on the large circular frame 11, and wind wheel blades 13 are mounted on the blade shaft 12. An auxiliary braking device 22 for adjusting the rotation angle of the wind wheel blades 13 is provided on the wind wheel 9. In this embodiment, the auxiliary braking device 22 includes an adjusting wire rope and a motor for winding and unwinding the adjusting wire rope. The adjusting wire rope is made of a steel wire rope. One end of the adjusting wire rope is wound on the motor. A guide wheel is provided on the large circular frame 11. The other end of the adjusting wire rope bypasses the guide wheel and is fixedly connected to the movable end of the wind wheel blade 13, so that by winding and unwinding the adjusting wire rope by the motor, the wind wheel blade 13 can be pulled to rotate. A tension spring is connected between the wind wheel blade 13 and the large circular frame 11, so as to cooperate with the adjusting wire rope to drive the wind wheel blade 13 to maintain a certain angle. Multiple groups of auxiliary braking devices 22 can be provided as needed. In this embodiment, two groups of auxiliary braking devices 22 are provided, and the two groups of auxiliary braking devices 22 are symmetrically arranged on both sides of the wind wheel 9. The motor is controlled by a wind direction and wind speed controller. When the wind direction and wind speed controller detects strong wind approaching, the motor is started to control the winding and unwinding of the adjusting wire rope, so as to adjust the windward angle of the wind wheel blade 13.

[0042] In addition, in addition to adopting the above structure, the wind wheel 9 can also adopt a traditional three-blade wind wheel. By installing and fixing the three-blade wind wheel on the rotating sleeve 5, the same excellent effect can be achieved.

[0043] When the wind power generation equipment is running, the wind wheel 9 drives the rotating sleeve 5 to rotate. The large gear meshes with the small gear 17 to drive the transmission shaft 19 to rotate. The mechanical energy is transmitted to the speed increaser 20 and then drives the generator set 14 to generate electricity.

[0044] When the wind direction and wind speed controller detects strong wind, the auxiliary braking device 22 is started, and the motor is controlled to wind the adjusting wire rope, so that the extending direction of the wind wheel blade 13 is consistent with the wind direction, so as to effectively release the wind resistance, prevent the wind wheel 9 from rotating at high speed, and play the role of resisting strong typhoons.

[0045] When maintenance work needs to be carried out, the wind wheel 9 can be braked by the braking device 21, so as to ensure that the staff can carry out maintenance.

[0046] Although the present application has been described above with reference to the embodiments, various modifications can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in the present application can be combined with each other in any way, and the exhaustive description of these combinations is not given in this specification only for the sake of saving space and resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fixed-axis large-scale wind power generation device, characterized in that: It includes a support tower (1), a turntable (2) is arranged at the top of the support tower (1), a fixed shaft bracket (3) is arranged at the top of the turntable (2), one end of the fixed shaft bracket (3) is rotatably sleeved with a rotating sleeve frame (5), a wind wheel (9) is fixedly installed on the outer side of the rotating sleeve frame (5), a generator set (14) is arranged on the fixed shaft bracket (3), and a gear transmission mechanism (15) for transmitting power to the generator set (14) is arranged on the rotating sleeve frame (5).

2. A fixed-axis large-scale wind power generation device according to claim 1, characterized in that: The gear transmission mechanism (15) includes a large driving gear (16) and a small gear (17) which are meshed with each other. The large driving gear (16) is fixedly arranged on the rotating sleeve frame (5). An installation seat (18) is fixedly arranged on the fixed shaft bracket (3), a transmission shaft (19) is rotatably arranged on the installation seat (18), and the transmission shaft (19) is coaxially and fixedly connected with the small gear (17). The rotational power is transmitted to the generator set (14) through the transmission shaft (19).

3. A fixed-axis type large-scale wind power generation device according to claim 2, characterized in that: The large driving gear (16) is a circular large toothed ring formed by assembling a plurality of tooth blocks end to end. The tooth blocks are fixedly installed on the rotating sleeve frame (5) through bolts, and the small gear (17) is arranged inside the large driving gear (16).

4. A fixed-axis type large-scale wind power generation device according to claim 2, characterized in that: A speed increaser (20) is further arranged on the fixed shaft bracket (3). The input shaft of the speed increaser (20) is connected to the transmission shaft (19) through a coupling, and the output shaft of the speed increaser (20) is connected to the drive shaft of the generator set (14) through a coupling.

5. A fixed-axis type large-scale wind power generation device according to claim 1, characterized in that: A connecting bearing (6) is arranged between the fixed shaft bracket (3) and the rotating sleeve frame (5).

6. The fixed-axis type large-scale wind power generation equipment according to claim 1, wherein: A braking device (21) is arranged between the rotating sleeve frame (5) and the fixed shaft bracket (3).

7. A fixed-axis large-scale wind power generation device according to claim 1, characterized in that: The wind wheel (9) includes a wind wheel circular frame bracket (10) and a large circular frame (11). A plurality of sets of mutual stay wires (8) are arranged between the wind wheel circular frame bracket (10) and the large circular frame (11) for connection.

8. A fixed-axis large-scale wind power generation device according to claim 7, characterized in that: The wind wheel (9) further includes a blade shaft (12) rotatably installed on the large circular frame (11), and wind wheel blades (13) are installed on the blade shaft (12).

9. The fixed-shaft type large-scale wind power generation equipment according to claim 8, characterized in that: An auxiliary braking device (22) for adjusting the rotation angle of the wind wheel blades (13) is arranged on the wind wheel (9).

10. A fixed-axis type large-scale wind power generation device according to claim 9, characterized in that: The auxiliary braking device (22) includes an adjusting stay wire and a motor for winding and unwinding the adjusting stay wire. One end of the adjusting stay wire is wound on the motor, and the other end of the adjusting stay wire is fixedly connected to the movable end of the wind wheel blade (13).

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