Multi-wind-wheel wind driven generator

Abstract

The invention provides a multi-wind-wheel wind driven generator, and relates to the technical field of wind power generation, the multi-wind-wheel wind driven generator comprises a fixed pile foundation, a truss tower is arranged above the fixed pile foundation, a multi-wind-wheel assembly is installed on the truss tower, and a suspension transformer is arranged below the truss tower; the wind driven generator further comprises a wind power variable-pitch adjusting assembly which is used for monitoring and adjusting the wind driven generator. The technical problems that multiple wind driven generators cannot be loaded on the same horizontal plane of a traditional multi-wind-wheel wind driven generator, and hoisting machinery is needed for installing the wind driven generators are solved.

Description

Technical Field

[0001] The invention belongs to the field of wind power generation, and in particular relates to a multi-wind-wheel wind turbine generator. Background Art

[0002] With the rapid growth of global demand for clean energy, wind power generation technology continues to evolve, but traditional wind turbines still have many limitations. The common single-rotor or double-rotor tower structure has low wind energy capture efficiency under complex wind conditions and is difficult to fully utilize wind energy resources at different heights and directions. Therefore, it is necessary to improve power generation efficiency by designing multi-rotor generators; Existing multi-wind turbine generator devices usually adopt a tower structure design. When installing a multi-wind turbine generator, this design usually faces a small loading surface area and cannot load more wind turbines on the same plane. During the installation process, additional lifting equipment is required for installation, which makes the installation difficult. Summary of the invention

[0003] The present invention provides a multi-wind-rotor wind turbine generator to solve at least one technical problem raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention discloses a multi-wind-rotor wind turbine, comprising: a fixed pile foundation, a truss tower is arranged above the fixed pile foundation, a multi-wind-rotor assembly is installed on the truss tower, and a suspended transformer is arranged below the truss tower; It also includes a wind pitch adjustment component, which is used to monitor and adjust the wind generator.

[0005] Preferably, the truss tower includes a plurality of base sections, which are stacked in sequence and bolted together, the tops of the plurality of base sections are bolted to a grille step, a passage opening is provided on the grille step, a ladder is provided at the passage opening, and the upper and lower ends of the ladder are bolted to the grille step.

[0006] Preferably, the foundation section includes four groups of main chords, the four groups of main chords are arranged in a square shape, a plurality of steps are fixedly connected to the four groups of main chords, a plurality of webs are staggered between the four groups of main chords, both ends of the plurality of webs are bolted to the main chords, the bottoms of the four groups of main chords at the bottom end of the truss tower are nested in fixed sleeves, the bottom ends of the fixed sleeves are bolted to the fixed pile foundation, and the fixed sleeves and the main chords are connected by bolts.

[0007] Preferably, the multi-wind rotor assembly includes a plurality of mounting sleeves, each of which is mounted on a truss tower, a lifting structure is provided inside the plurality of mounting sleeves, the mounting sleeves are bolted to the truss tower, the outer sides of the plurality of mounting sleeves are bolted to a plurality of base platforms, a wind turbine is bolted to the base platform, a guardrail is bolted to the outer side of the base platform, and a wind turbine blade is mounted on the working end of the wind turbine.

[0008] Preferably, the lifting structure includes a plurality of rollers, the plurality of rollers are bolted to the side walls of the mounting sleeve, the plurality of rollers and the truss tower roll relative to each other, a movable climbing claw is provided above the roller, the movable climbing claw is rotatably connected to the mounting sleeve, the movable climbing claw cooperates with the step, both sides of the mounting sleeve are hingedly connected with a lifting hydraulic cylinder, the working end of the lifting hydraulic cylinder is bolted to a lifting beam, and the lifting beam is nested and connected in the step.

[0009] Preferably, the suspension transformer includes a suspension platform, the suspension platform is hinged to the side of the truss tower, a suspension cable is hinged to the suspension platform, the other end of the suspension cable is hinged to the side of the truss tower, a shock absorbing structure is provided on the suspension platform, a transformer is installed on the shock absorbing structure, and the transformer is electrically connected to the wind turbine.

[0010] Preferably, the wind power pitch adjustment component includes a control module, a data processing module, a detection module and an execution module, and the detection module includes: Wind speed sensor: used to detect the wind speed in the current environment, which is installed on the wind turbine; Speed ​​sensor: used to detect the speed of the wind turbine, which is installed on the wind turbine; Displacement sensor: used to detect the pitch distance of the wind turbine, which is set on the wind turbine; Power sensor: used to detect the power generation of the wind turbine, which is set on the wind turbine; Angle sensor: used to detect the angle of wind force relative to the wind turbine in the current environment, and is set on the wind turbine; The detection module is electrically connected to the data processing module, the control module is electrically connected to the data processing module and the execution module, and the control module controls the execution module to work based on the data results of the data processing module.

[0011] Preferably, the control module controls the execution module based on the data result of the data processing module, including the following steps: Step 1: Calculate the wind load factor of the current wind turbine based on the detection values ​​of the wind speed sensor, rotation speed sensor, displacement sensor, power sensor and angle sensor : = ;in: is the wind load factor of the wind turbine, is the air density, is the effective load area of ​​the wind turbine blade, is the detection value of the wind speed sensor, is the detection value of the angle sensor, for The tangent value of is the drag coefficient, is the detection value of the displacement sensor, is the width of the wind turbine blade, is the pitch angle of the wind turbine blades, is the rated wind load of the wind turbine blades, is the detection value of the power sensor, is the maximum power generation of the wind turbine; Step 2: Comparison of data processing modules and ,when When, according to Calculate the adjustment parameters of wind turbine blades ,when No processing is done when: = (2); in which: is the adjustment parameter of the wind turbine blades, is the minimum wind load factor of the wind turbine; Step 3: Control model based on The control execution module drives the wind turbine to perform pitch operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the basic node of the present invention; Figure 3 It is a schematic structural diagram of a multi-wind wheel assembly of the present invention; Figure 4 It is a structural schematic diagram of the suspension transformer of the present invention.

[0013] In the figure: 1. Fixed pile foundation; 2. Truss tower; 21. Grille step; 22. Passageway; 23. Ladder; 3. Foundation section; 31. Main chord; 32. Step; 33. Web member; 34. Fixed sleeve; 4. Multi-wind rotor assembly; 41. Mounting frame; 42. Foundation platform; 43. Wind turbine; 44. Guardrail; 45. Wind rotor blades; 5. Lifting structure; 51. Roller; 52. Movable climbing claw; 53. Lifting hydraulic cylinder; 54. Lifting beam; 6. Suspended transformer; 61. Suspended platform; 62. Suspension rope; 63. Transformer. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0015] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0016] The present invention provides the following embodiments Example 1 The embodiment of the present invention provides a multi-wind-wheel wind turbine generator, such as Figure 1-4 As shown, it comprises: a fixed pile foundation 1, a truss tower 2 is arranged above the fixed pile foundation 1, a multi-wind wheel assembly 4 is installed on the truss tower 2, and a suspended transformer 6 is arranged below the truss tower 2; It also includes a wind pitch adjustment component, which is used to monitor and adjust the wind generator.

[0017] The working principle and beneficial effects of the above technical solution are as follows: the fixed pile foundation 1 is connected to the truss tower 2, wherein the fixed pile foundation 1 is deeply buried underground to ensure the stability of the truss tower 2, and a multi-wind rotor assembly 4 is installed on the truss tower 2 for wind power generation. The generated wind power is input to the power grid through the suspended transformer 6 under the truss tower 2, and the wind power variable pitch adjustment assembly adjusts the wind rotor in the multi-wind rotor assembly 4 by monitoring the changes in wind power and generator, so as to avoid excessive wind force and maximize the use of wind energy; The present invention utilizes a truss tower 2 to install a wind turbine 43 in a multi-wind rotor assembly 4. The design adopts a triangular stable structure and a hollow design to ensure that the truss tower 2 will not bear a large wind load when facing a strong wind force, thereby ensuring the stability of the truss tower 2, and its four-sided structure has high expandability and installation performance. The design of the multi-wind rotor assembly 4 is achieved by mounting an external frame on the outside of the truss tower 2. This design can ensure the stability of the multi-wind rotor structure while utilizing the self-lifting property of the multi-wind rotor assembly 4 to facilitate its installation. The design of the suspended transformer 6 avoids the transformer occupying land and the need for additional land acquisition, which increases construction costs. The design of the wind variable pitch adjustment assembly ensures that when facing wind force, different wind rotors of the multi-wind rotor assembly 4 can maximize the use of wind energy to generate electricity without causing structural damage due to strong wind force.

[0018] Example 2 On the basis of Example 1, the truss tower 2 includes a plurality of foundation sections 3, which are stacked in sequence and bolted together, and the tops of the plurality of foundation sections 3 are bolted to a grille step 21, and a passage opening 22 is provided on the grille step 21, and a ladder 23 is provided at the passage opening 22, and the upper and lower ends of the ladder 23 are bolted to the grille step 21.

[0019] The foundation section 3 includes four groups of main chords 31, which are arranged in a square shape. A number of steps 32 are fixedly connected to the four groups of main chords 31. A number of web members 33 are staggered between the four groups of main chords 31. Both ends of the web members 33 are bolted to the main chords 31. The bottoms of the four groups of main chords 31 at the bottom of the truss tower 2 are all nested in the fixing sleeves 34. The bottom end of the fixing sleeves 34 is bolted to the fixed pile foundation 1, and the fixing sleeves 34 and the main chords 31 are connected by bolts.

[0020] The working principle and beneficial effects of the above technical solution are as follows: the truss tower 2 is formed by stacking a number of foundation sections 3 in sequence, and the foundation sections 3 are fixed by bolts to prevent them from being disconnected. When the operator climbs the truss tower 2, he ascends step by step through the ladder 23. When ascending each foundation section 3, he transfers at the grille step 21 on the top of the foundation section 3. The operator enters and exits through the passage 22 on the grille step 21. The foundation section 3 is supported by four groups of main chord rods 31, and the four groups of main chord rods 31 are connected by web rods 33 to maintain their vertical stability. The bottom foundation section 3 is connected to the fixed pile foundation 1 through a fixing sleeve 34. The main chord rod 31 is embedded in the fixing sleeve 34 and fixed with bolts. The pedal on the main chord rod 31 is used to carry the multi-wind wheel assembly 4. The present invention utilizes a plurality of foundation nodes 3 stacked to form a truss tower 2. This design can achieve changes in the height of the truss tower 2 by autonomously adjusting the number of foundation nodes 3, and can make specific adjustments based on local conditions, with high flexibility. The foundation nodes 3 are supported by the main chord 31 as the main body. This design can maintain sufficient support for the truss tower 2 while ensuring high anti-overturning ability through the design of the triangular structure.

[0021] Example 3 On the basis of Example 1, the multi-wind rotor assembly 4 includes a plurality of mounting sleeves 41, and the plurality of mounting sleeves 41 are all mounted on the truss tower 2. A lifting structure 5 is provided inside the plurality of mounting sleeves 41. The mounting sleeves 41 are bolted to the truss tower 2. The outer sides of the plurality of mounting sleeves 41 are bolted to a plurality of base platforms 42. A wind turbine 43 is bolted to the base platform 42. A guardrail 44 is bolted to the outer side of the base platform 42. A wind turbine blade 45 is installed at the working end of the wind turbine 43.

[0022] The lifting structure 5 includes a plurality of rollers 51, which are bolted to the side walls of the mounting sleeve 41, and the rollers 51 roll relative to the truss tower 2. A movable climbing claw 52 is provided above the roller 51, and the movable climbing claw 52 is rotatably connected to the mounting sleeve 41. The movable climbing claw 52 cooperates with the step 32. Both sides of the mounting sleeve 41 are hingedly connected with a lifting hydraulic cylinder 53, and the working end of the lifting hydraulic cylinder 53 is bolted to a lifting beam 54, and the lifting beam 54 is nested and connected in the step 32.

[0023] The beneficial effects of the above technical solution are as follows: the installation sleeve 41 is used as the bearing structure of the wind turbine. When it is installed, the installation sleeve 41 is placed on the truss tower 2, and the lifting beam 54 is nested in the step 32. Then the lifting hydraulic cylinder 53 is started. Under the action of the reaction force, the lifting hydraulic cylinder 53 lifts the installation sleeve 41 along the truss tower 2. During the lifting process, a number of rollers 51 roll relative to the truss tower 2 to ensure that the relative gap between the installation sleeve 41 and the truss tower 2 remains unchanged. When the installation sleeve 41 is lifted above one foundation section 3, the rotating The movable climbing claw 52 is used to step on the step 32, and the entire installation sleeve 41 is supported by the movable climbing claw 52. Then, the lifting hydraulic cylinder 53 is retracted to make the lifting crossbeam 54 rise to the top of the step 32, and then it is nested in the step 32 again. The above steps are repeated until the installation sleeve 41 is lifted to a predetermined position, and the top bolt of the installation sleeve 41 is connected to the truss tower 2. The base platform 42 outside the installation sleeve 41 is used to carry the wind turbine 43, and the guardrail 44 on the base platform 42 is used to protect the operator from moving on it; The present invention utilizes the mounting sleeve 41 to load the wind turbine 43. This design can realize a multi-wind rotor structure through external mounting. This design enables any number of wind turbines 43 to be installed on the truss tower 2 as needed, and can maximize the use of wind energy to generate electricity. A number of rollers 51 are provided between the mounting sleeve 41 and the truss tower 2. This design can ensure that the mounting sleeve 41 maintains a gap with the truss tower 2 during the rising process to avoid jamming due to inconsistent rising. At the same time, the design of the lifting hydraulic cylinder 53 and the lifting beam 54 cooperates with the movable climbing claw 52 to enable the mounting sleeve 41 to achieve self-lifting. This design avoids the need for additional lifting devices to achieve lifting of the multi-wind rotor assembly 4 during the installation process, and can control the lifting height according to the needs of the situation. While ensuring safety, it is also convenient for construction.

[0024] Example 4 On the basis of Example 1, the suspension transformer 6 includes a suspension platform 61, which is hinged to the side of the truss tower 2. A suspension cable 62 is hinged to the suspension platform 61, and the other end of the suspension cable 62 is hinged to the side of the truss tower 2. A transformer 63 is installed on the suspension platform 61, and the transformer 63 is electrically connected to the wind turbine 43.

[0025] The beneficial effects of the above technical solution are as follows: the suspension platform 61 is kept horizontal by the suspension rope 62, a transformer is installed on the suspension platform 61, after the wind turbine 43 transmits electric energy to the transformer, the transformer boosts the electric energy and transmits it to the power grid, when it is necessary to install the transformer on the truss tower 2, the suspension rope 62 can be removed, so that the suspension platform 61 rotates and falls, and fits the truss tower 2; The present invention utilizes a suspension platform 61 to support the transformer. This design can reduce the floor space occupied by the multi-wind turbine generator and avoid the problem of lack of effective land for building the transformer when the truss tower 2 is installed in a mountainous location. In addition, through an overall integrated design, the construction cost of the multi-wind turbine generator 43 can be reduced and the construction efficiency can be improved. At the same time, the movable design of the suspension platform 61 enables it to be dropped, folded and leaned against the truss tower 2 when not in use, without affecting the wind load on the truss tower 2.

[0026] Example 5 On the basis of Example 1, the wind power pitch adjustment component includes a control module, a data processing module, a detection module and an execution module, and the detection module includes: Wind speed sensor: used to detect the wind speed in the current environment, which is arranged on the wind turbine 43; Rotation speed sensor: used to detect the rotation speed of the wind turbine 43, which is arranged on the wind turbine 43; Displacement sensor: used to detect the pitch distance of the wind turbine 43, and disposed on the wind turbine 43; Power sensor: used to detect the power generated by the wind turbine 43, and disposed on the wind turbine 43; Angle sensor: used to detect the angle of wind force relative to the wind turbine 43 under the current environment, and is arranged on the wind turbine 43; The detection module is electrically connected to the data processing module, the control module is electrically connected to the data processing module and the execution module, and the control module controls the execution module to work based on the data results of the data processing module.

[0027] The control module controls the execution module based on the data results of the data processing module, including the following steps: Step 1: Calculate the wind load factor of the current wind turbine based on the detection values ​​of the wind speed sensor, rotation speed sensor, displacement sensor, power sensor and angle sensor : = ;in: is the wind load factor of the wind turbine 43, is the air density, is the effective load area of ​​the blades of the wind turbine 43, is the detection value of the wind speed sensor, is the detection value of the angle sensor, for The tangent value of is the drag coefficient, is the detection value of the displacement sensor, is the width of the blades of the wind turbine 43, is the pitch angle of the blades of the wind turbine 43, is the rated wind load of the blades of the wind turbine 43, is the detection value of the power sensor, is the maximum power generation of the wind turbine 43; Step 2: Comparison of data processing modules and ,when When, according to Calculate the adjustment parameters of the wind turbine 43 blades ,when No processing is done when: = (2); in which: is the adjustment parameter of the blades of the wind turbine 43, is the minimum wind load factor of the wind turbine 43; Step 3: Control model based on The control execution module drives the wind turbine to perform pitch operation The beneficial effects of the above technical solution are as follows: since the wind turbine 43 needs to be operated with pitch change when facing strong wind to prevent the wind load from damaging the blades, the wind load of the wind turbine 43 is judged by monitoring the state of the wind turbine 43 and the external wind speed, and when the wind load exceeds the predetermined value, the wind turbine 43 is operated with pitch change in time; The present invention utilizes a control module, a data processing module, a detection module and an execution module to detect and calculate the wind load conditions of the wind turbine 43, and timely changes the pitch according to the wind load conditions. This design can ensure the stable operation of the wind turbine 43 and maximize the use of wind energy for power generation.

[0028] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A multi-wind-rotor wind turbine, characterized in that: include: A fixed pile foundation (1), wherein a truss tower (2) is provided above the fixed pile foundation (1), a multi-wind wheel assembly (4) is installed on the truss tower (2), and a suspended transformer (6) is provided below the truss tower (2); It also includes a wind pitch adjustment component, which is used to monitor and adjust the wind generator.

2. A multi-wind-rotor wind turbine according to claim 1, characterized in that: The truss tower (2) comprises a plurality of foundation sections (3), the plurality of foundation sections (3) are stacked in sequence and bolted together, the tops of the plurality of foundation sections (3) are bolted together with a grille step (21), a passage opening (22) is provided on the grille step (21), a ladder (23) is provided at the passage opening (22), and the ladder (23) is bolted together with the grille step (21) at both upper and lower ends.

3. A multi-wind-rotor wind turbine according to claim 2, characterized in that: The foundation section (3) comprises four groups of main chords (31), the four groups of main chords (31) are arranged in a square, a plurality of steps (32) are fixedly connected to the four groups of main chords (31), a plurality of webs (33) are arranged alternately between the four groups of main chords (31), both ends of the plurality of webs (33) are bolted to the main chords (31), the bottoms of the four groups of main chords (31) at the bottom end of the truss tower (2) are nested in fixed sleeves (34), the bottom ends of the fixed sleeves (34) are bolted to the fixed pile foundation (1), and the fixed sleeves (34) and the main chords (31) are connected by bolts.

4. A multi-wind-rotor wind turbine according to claim 1, characterized in that: The multi-wind rotor assembly (4) comprises a plurality of mounting sleeves (41), the plurality of mounting sleeves (41) are all mounted on the truss tower (2), a lifting structure (5) is arranged inside the plurality of mounting sleeves (41), the mounting sleeves (41) are bolted to the truss tower (2), the outer side surfaces of the plurality of mounting sleeves (41) are bolted to a plurality of base platforms (42), a wind turbine (43) is bolted to the base platform (42), a guardrail (44) is bolted to the outer side of the base platform (42), and a wind turbine blade (45) is mounted on the working end of the wind turbine (43).

5. A multi-wind-rotor wind turbine according to claim 4, characterized in that: The lifting structure (5) comprises a plurality of rollers (51), the plurality of rollers (51) being bolted to the side wall of the mounting sleeve (41), the plurality of rollers (51) rolling relative to the truss tower (2), a movable climbing claw (52) being provided above the rollers (51), the movable climbing claw (52) being rotatably connected to the mounting sleeve (41), the movable climbing claw (52) cooperating with the step (32), both sides of the mounting sleeve (41) being hingedly connected to a lifting hydraulic cylinder (53), the working end of the lifting hydraulic cylinder (53) being bolted to a lifting crossbeam (54), the lifting crossbeam (54) being nested and connected in the step (32).

6. A multi-wind-rotor wind turbine according to claim 1, characterized in that: The suspended transformer (6) comprises a suspension platform (61), the suspension platform (61) is hingedly connected to the side of the truss tower (2), a suspension cable (62) is hingedly connected to the suspension platform (61), the other end of the suspension cable (62) is hingedly connected to the side of the truss tower (2), a transformer (63) is installed on the suspension platform (61), and the transformer (63) is electrically connected to the wind turbine (43).

7. A multi-wind-rotor wind turbine according to claim 1, characterized in that: The wind power pitch adjustment component includes a control module, a data processing module, a detection module and an execution module, and the detection module includes: Wind speed sensor: used to detect the wind speed in the current environment, and is arranged on the wind turbine (43); A rotation speed sensor: used to detect the rotation speed of the wind turbine (43), and arranged on the wind turbine (43); A displacement sensor: used for detecting the pitch change distance of the wind turbine (43), and arranged on the wind turbine (43); A power sensor: used for detecting the power generated by the wind generator (43), and arranged on the wind generator (43); Angle sensor: used to detect the angle of wind force relative to the wind generator (43) in the current environment, and arranged on the wind generator (43); The detection module is electrically connected to the data processing module, the control module is electrically connected to the data processing module and the execution module, and the control module controls the execution module to work based on the data results of the data processing module.

8. A multi-wind-rotor wind turbine according to claim 7, characterized in that: The control module controls the execution module based on the data results of the data processing module, including the following steps: Step 1: Calculate the wind load factor of the current wind turbine based on the detection values ​​of the wind speed sensor, rotation speed sensor, displacement sensor, power sensor and angle sensor : = ;in: is the wind load factor of the wind turbine (43), is the air density, is the effective load area of ​​the blades of the wind turbine (43), is the detection value of the wind speed sensor, is the detection value of the angle sensor, for The tangent value of is the drag coefficient, is the detection value of the displacement sensor, is the width of the blades of the wind turbine (43), is the pitch angle of the blades of the wind turbine (43), is the rated wind load of the blades of the wind turbine (43), is the detection value of the power sensor, is the maximum power generation of the wind turbine (43); Step 2: Comparison of data processing modules and ,when When, according to Calculation of adjustment parameters of wind turbine (43) blades ,when No processing is done when: = (2); in which: are adjustment parameters of the blades of the wind turbine (43), is the minimum wind load factor of the wind turbine (43); Step 3: Control model according to The control execution module drives the wind turbine to perform pitch operation.

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