A wind turbine blade zero line correction device and method of use thereof

Abstract

This invention discloses a zero-position line correction device for wind turbine blades and its usage method, relating to the field of wind turbine installation technology. Specifically, it relates to a zero-position line correction device for wind turbine blades, comprising: a collar, an adjusting screw, a blade, and a positioning pointer. One end of the collar is connected to the blade via the adjusting screw, and the positioning pointer is positioned along the axis of the adjusting screw. The collar is symmetrically arranged along the axis of the adjusting screw, with a positioning hole in its center and a positioning cut surface on its outer wall near the blade end. The blade has a through hole in its center for connecting to the collar, and the two sides of the blade are symmetrically arranged opposite the through hole. Its advantages are: improved correction accuracy: through a precisely designed mechanical structure and positioning device, this device can effectively avoid errors caused by manual visual inspection, significantly improving the operating efficiency and safety performance of the wind turbine; increased installation efficiency, and adaptability to various working conditions.

Description

Technical Field

[0001] This invention relates to the field of wind turbine installation technology, specifically to a wind turbine blade zero-position line correction device and its usage method. Background Technology

[0002] As a crucial component of clean energy, wind power is playing an increasingly vital role in the global energy transition. With continuous advancements in wind power technology, the capacity and size of wind turbines are constantly increasing, placing ever higher demands on the precision required for installation and commissioning. During the installation of wind turbines, precise alignment of the blade pitch system's zero-position line is critical to ensuring the efficient and safe operation of the wind turbine.

[0003] The blade pitch system mainly consists of components such as the hub, pitch bearing, and blades. In the initial pitch state (i.e., the blade angle is 0°), it is necessary to ensure that four zero-position lines—the hub zero-position line, the outer ring zero-position line of the pitch bearing, the inner ring zero-position line of the pitch bearing, and the blade zero-position line—are aligned. The alignment of the hub zero-position line, the outer ring zero-position line of the pitch bearing, and the inner ring zero-position line of the pitch bearing can be completed mechanically in the production workshop, while the alignment of the blade zero-position line needs to be performed on-site after the blades are installed. This process is limited by factors such as the on-site environment, lighting conditions, and safety considerations for working at heights, and traditional manual visual calibration methods have many problems.

[0004] 1. Low calibration accuracy: Manual visual calibration is easily affected by human factors and environmental conditions, making it difficult to guarantee high-precision alignment. Especially with the continuous increase in wind turbine diameter, even small deviations may lead to significant aerodynamic imbalance problems, affecting the performance and lifespan of wind turbine units.

[0005] 2. Low installation efficiency: The manual visual calibration process is time-consuming, which increases installation time and cost and reduces construction efficiency.

[0006] 3. Significant safety hazards: Working at heights presents significant safety risks due to manual visual inspection and operation, making accidents more likely.

[0007] Therefore, there is an urgent need for a method and device that can improve the accuracy and efficiency of blade zero-position line correction while ensuring construction safety. This patent application addresses the shortcomings of the aforementioned background technology by providing a novel wind turbine blade zero-position line correction device, aiming to solve the problems existing in current methods, improve the accuracy and efficiency of wind turbine installation, and ensure construction safety. Summary of the Invention

[0008] The present invention aims to overcome the shortcomings of the prior art and provide a zero-position line correction device for wind turbine blades, comprising: a collar, an adjusting screw, a blade, and a positioning pointer. One end of the collar is connected to the blade through the adjusting screw, and the collar is provided with a positioning pointer along the axis of the adjusting screw.

[0009] The collars are symmetrically arranged along the axis of the adjusting screw, with a positioning hole in the middle of the collar and a positioning cut surface on the outer wall of the collar near the end of the wing.

[0010] The wing has a through hole in the middle for connecting the collar, and the two sides of the wing are symmetrically arranged with respect to the through hole.

[0011] Furthermore, the positioning hole on the side of the collar with the positioning pointer is designed with a V-shaped cut.

[0012] Furthermore, the through hole of the wing is set as a square hole, and a matching square positioning protrusion is provided at one end of the collar connecting the wing.

[0013] Furthermore, the positioning protrusion has a bolt hole in the middle for the adjusting screw to pass through.

[0014] Furthermore, the adjusting screw includes a screw body and a washer.

[0015] Furthermore, the two ends of the wing are designed as arcs that bend towards the collar.

[0016] Furthermore, the positioning pointer is rotatably mounted on the collar via a pin.

[0017] Furthermore, a method for using a wind turbine blade zero-position line correction device includes the following steps:

[0018] S1: Insert the shim into the adjusting screw, and then insert the collar protrusion into the through hole of the wing;

[0019] S2: Insert the adjusting screw into the wing and collar assembly in sequence, and set the positioning pointer on the collar through the pin to ensure that the positioning pointer and the adjusting screw are on the same axis.

[0020] S3: Fit the collar positioning hole onto the outer ring bolt of the pitch bearing or place this device between the two outer ring bolts of the pitch bearing so that the axis of the adjusting screw is aligned with the zero line of the outer ring of the pitch bearing.

[0021] S4: Tighten the adjusting screw to fix the device.

[0022] S5: Rotate the positioning pointer to the blade mounting surface and adjust the blade mounting angle until the positioning pointer points to the blade zero position line.

[0023] Furthermore, in step S3, when the zero line of the outer ring of the pitch bearing is located in the middle of a certain outer ring bolt of the pitch bearing, the positioning hole of the collar is fitted onto the outer ring bolt of the pitch bearing, and the adjusting screw is tightened so that the V-shaped section abuts against the outer ring bolt. At the same time, the two ends of the blade abut against the outer ring bolt adjacent to the outer ring bolt, thus completing the positioning of the device.

[0024] Furthermore, in step S3, when the zero-position line of the outer ring of the pitch bearing is located in the middle of the two outer ring bolts of the pitch bearing, the device is placed between the two outer ring bolts of the pitch bearing, and the adjusting screw is tightened so that the two positioning surfaces abut against the two outer ring bolts respectively, while the blade arc portion abuts against the two outer ring bolts, thus completing the positioning of the device.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] This patent application provides a zero-position line correction device for wind turbine blades, which has significant advantages in the following aspects:

[0027] 1. Improve calibration accuracy:

[0028] Through a precisely designed mechanical structure and positioning device, this device can effectively avoid errors caused by manual visual inspection, ensuring precise alignment of the blade zero-position line with the hub zero-position line, the pitch bearing outer ring zero-position line, and the pitch bearing inner ring zero-position line, significantly improving the operating efficiency and performance of the wind turbine generator set.

[0029] The combined use of the positioning pointer and the adjusting screw makes the blade angle adjustment more precise, avoiding the uncertainty caused by manual operation.

[0030] 2. Improve installation efficiency:

[0031] The device is simple and quick to operate, which can significantly shorten the time for blade installation and alignment, reduce high-altitude work time, and lower installation costs.

[0032] Standardized operating procedures and easy-to-assemble component design make the installation process smoother and more efficient.

[0033] 3. Adaptable to various working conditions:

[0034] The device is flexibly designed and can adapt to various working conditions, such as the zero-position line of the outer ring of the pitch bearing being set between two outer ring bolts or in the middle of one outer ring bolt, making it widely applicable.

[0035] Components such as collars and blades of different specifications and sizes can be adjusted according to actual needs to meet the installation requirements of different wind turbine models.

[0036] 4. Enhanced security:

[0037] Reduce manual visual inspection and operation in high-altitude work, lower safety risks during construction, and improve the safety of installation work.

[0038] The use of this device avoids direct human contact with rotating parts, further ensuring the safety of operators.

[0039] 5. Reduce maintenance costs:

[0040] By improving the accuracy of blade installation and alignment, operational failures and maintenance needs caused by blade angle deviations are reduced, thus lowering long-term maintenance costs.

[0041] The aforementioned beneficial effects demonstrate that the wind turbine blade zero-position line correction device provided in this patent application has significant advantages in improving installation quality, enhancing construction efficiency, ensuring construction safety, and reducing maintenance costs, and is of great significance to the development of the wind power industry. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the correction device in this invention;

[0043] Figure 2 This is a top view of the correction device in this invention;

[0044] Figure 3 This is a schematic diagram of the structure of the present invention used when the zero-position line of the outer ring of the pitch bearing is set between two bolts;

[0045] Figure 4 This is a schematic diagram of the structure of the present invention for the case where the zero-position line of the outer ring of the pitch bearing is set in the middle of a single bolt;

[0046] Figure 5 This is a schematic diagram of the collar structure of the present invention;

[0047] Figure 6 This is a schematic diagram of the wing structure of the present invention.

[0048] Marked in the image:

[0049] 1-Collar, 2-Adjusting screw, 3-Flange, 4-Positioning pointer, 5-Positioning hole, 6-Positioning facet, 7-V-shaped facet, 8-Through hole, 9-Positioning protrusion, 10-Washer, 11-Pin, 12-Outer ring bolt, 13-Zero position line. Detailed Implementation

[0050] The present invention will now be described in detail with reference to the accompanying drawings.

[0051] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0052] Example 1

[0053] In this embodiment, as Figure 1 As shown, a zero-position line correction device for wind turbine blades includes: a collar 1, an adjusting screw 2, a blade 3, and a positioning pointer 4. One end of the collar 1 is connected to the blade 3 through the adjusting screw 2, and the positioning pointer 4 is provided on the collar 1 along the axial direction of the adjusting screw 2.

[0054] The collar 1 is symmetrically arranged along the axis of the adjusting screw 2. A positioning hole 5 is provided in the middle of the collar 1, and a positioning cut surface 6 is provided on the outer wall of the collar 1 near the end of the wing 3.

[0055] The wing 3 has a through hole 8 in the middle for connecting the collar 1, and the two sides of the wing 3 are symmetrically arranged relative to the through hole 8.

[0056] The collar 1 adopts a ring structure with a positioning hole 5 in the middle for fitting onto the outer ring bolt 12. A positioning cut surface 6 is provided on the outer wall near the wing 3. Two gaps are formed between the positioning cut surface 6 and the wing 3 for placing the outer ring bolt 12. After tightening the bolt, the positioning function is achieved. It is worth noting that this device adopts a symmetrical design, which can ensure the accuracy of positioning.

[0057] Specifically, such as Figure 1 As shown, the positioning cut surface 6 is set as two inclined surfaces, located on both sides of the positioning protrusion 9 of the collar 1. The extension line of its inclined surface is V-shaped, which facilitates the clamping of the outer ring bolt 12 with the wing 3. The design of the positioning cut surface 6 improves the stability and positioning accuracy of the device during the installation process. Especially in the high-altitude working environment, it can effectively avoid swaying caused by wind and other factors, and ensure the smooth progress of the calibration work.

[0058] With this structural design, the device can be easily installed on the outer ring bolt 12 of the pitch bearing. By using the cooperation of the positioning pointer 4 and the adjusting screw 2, the blade angle can be precisely adjusted to ensure that the blade zero line 13 is aligned with the zero line 13 of the outer ring of the pitch bearing, thereby improving the installation accuracy.

[0059] Furthermore, the positioning hole 5 on the side of the collar 1 where the positioning pointer 4 is located is set as a V-shaped cut surface 7.

[0060] After the bolt is fitted into the positioning hole 5 and the adjusting screw is tightened, the device can be positioned and locked by utilizing the V-shape characteristics, preventing it from shifting during the calibration process and affecting the calibration accuracy.

[0061] The V-shaped cut surface 7 design improves the stability and positioning accuracy of the device during installation, especially in high-altitude working environments, effectively preventing swaying caused by factors such as wind and ensuring the smooth progress of calibration work.

[0062] Furthermore, the through hole 8 of the wing 3 is set as a square hole, and the collar 1 is provided with a matching square positioning protrusion 9 at one end of the wing 3.

[0063] The combined use of the square hole and the square positioning protrusion 9 improves the assembly accuracy and stability of the blade 3 and the collar 1, ensuring the reliability of the device when adjusting the blade angle.

[0064] Furthermore, the positioning protrusion 9 has a bolt hole in the middle for the adjusting screw 2 to pass through.

[0065] The bolt hole is provided with an internal thread that matches the adjusting screw 2. By providing the bolt hole, the installation of the adjusting screw 2 is made more stable, avoiding loosening or slippage during the adjustment process and improving the overall performance of the device.

[0066] Furthermore, the adjusting screw 2 includes a screw body and a washer 10.

[0067] Since the vane 3 uses a square hole without internal threads, it cannot effectively fix the screw head of the adjusting screw 2. Pressure is transmitted through the shim 10 to lock the vane 3. The use of the shim 10 improves the durability and stability of the adjusting screw 2, ensuring the reliability of the device in long-term use.

[0068] Furthermore, the two ends of the wing 3 are set to be arc-shaped, bending towards the collar 1.

[0069] The curved blade 3 improves the adaptability of the device during installation, especially when the zero line 13 of the outer ring of the pitch bearing is located between the two outer ring bolts 12, which enables better positioning and fixation of the device.

[0070] Furthermore, the positioning pointer 4 is rotatably mounted on the collar 1 via the pin 11.

[0071] The rotatable design of the positioning pointer 4 improves the flexibility of the device, making it easier for operators to adjust and correct the blade angle.

[0072] Example 2

[0073] Based on the embodiments, a method for using a wind turbine blade zero-position line correction device includes the following steps:

[0074] S1: Insert the shim 10 into the adjusting screw 2, and then insert the protrusion of the collar 1 into the through hole 8 of the wing 3;

[0075] S2: Insert the adjusting screw 2 into the assembly of the wing 3 and the collar 1 in sequence, and set the positioning pointer 4 on the collar 1 through the pin 11 to ensure that the positioning pointer 4 and the adjusting screw 2 are on the same axis.

[0076] S3: Fit the positioning hole 5 of the collar 1 onto the outer ring bolt 12 of the pitch bearing or place this device between the two outer ring bolts 12 of the pitch bearing so that the axis of the adjusting screw 2 is aligned with the zero line 13 of the outer ring of the pitch bearing.

[0077] S4: Tighten adjusting screw 2 to fix the device.

[0078] S5: Rotate the positioning pointer 4 to the blade mounting surface and adjust the blade mounting angle until the positioning pointer 4 points to the blade zero line 13.

[0079] This method is simple, quick, and easy to operate, and can significantly improve the efficiency and accuracy of blade zero-position line 13 correction, while reducing high-altitude operation time, construction costs, and safety risks.

[0080] Furthermore, in step S3, when the zero line 13 of the outer ring of the pitch bearing is located in the middle of a certain outer ring bolt 12 of the pitch bearing, the positioning hole 5 of the collar 1 is fitted onto the outer ring bolt 12 of the pitch bearing, and the adjusting screw 2 is tightened so that the V-shaped cut surface 7 abuts against the outer ring bolt 12. At the same time, the two ends of the blade 3 abut against the adjacent outer ring bolt 12 of the outer ring bolt 12, thus completing the positioning of this device.

[0081] This method is suitable for situations where the zero line 13 of the outer ring of the pitch bearing is set in the middle of a single bolt, which can ensure the stability and positioning accuracy of the device during installation.

[0082] Furthermore, in step S3, when the zero-position line 13 of the outer ring of the pitch bearing is located in the middle of the two outer ring bolts 12 of the pitch bearing, the device is placed between the two outer ring bolts 12 of the pitch bearing, and the adjusting screw 2 is tightened so that the two positioning surfaces 6 respectively abut against the two outer ring bolts 12, while the arc part of the blade 3 abuts against the two outer ring bolts 12, thus completing the positioning of the device.

[0083] This method is suitable for situations where the zero-position line 13 of the outer ring of the pitch bearing is set between two bolts. It can ensure the stability and positioning accuracy of the device during installation and improve the efficiency and accuracy of blade zero-position line 13 correction.

[0084] The above description is merely a preferred embodiment of the invention and is not intended to limit the invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A zero-position line correction device for wind turbine blades, characterized in that: include: The collar (1), adjusting screw (2), wing (3) and positioning pointer (4) are provided. One end of the collar (1) is connected to the wing (3) through the adjusting screw (2). The positioning pointer (4) is provided on the collar (1) along the axis of the adjusting screw (2). The collar (1) is symmetrically arranged along the axis of the adjusting screw (2). A positioning hole (5) is provided in the middle of the collar (1), and a positioning cut surface (6) is provided on the outer wall of the collar (1) near the end of the wing (3). The wing (3) has a through hole (8) in the middle for connecting the collar (1), and the two sides of the wing (3) are symmetrically arranged relative to the through hole (8); The collar (1) is provided with a positioning hole (5) on one side of the positioning pointer (4) and is configured with a V-shaped cut (7); The two ends of the wing (3) are set to be curved towards the collar (1).

2. The wind turbine blade zero-position line correction device according to claim 1, characterized in that: The through hole (8) of the wing (3) is set as a square hole, and the collar (1) is provided with a matching square positioning protrusion (9) at one end of the wing (3).

3. The wind turbine blade zero-position line correction device according to claim 2, characterized in that: The positioning protrusion (9) has a bolt hole in the middle for the adjusting screw (2) to pass through.

4. The wind turbine blade zero-position line correction device according to claim 1, characterized in that: The adjusting screw (2) includes a screw body and a washer (10).

5. The wind turbine blade zero-position line correction device according to claim 1, characterized in that: The positioning pointer (4) is rotatably mounted on the collar (1) via a pin (11).

6. A method of using a wind turbine blade zero-position line correction device, applied to the wind turbine blade zero-position line correction device according to any one of claims 1-5, characterized in that: Includes the following steps: S1: Insert the shim (10) into the adjusting screw (2), and then insert the protrusion of the collar (1) into the through hole (8) of the wing (3); S2: Insert the adjusting screw (2) into the wing (3) and collar (1) assembly in sequence, and set the positioning pointer (4) on the collar (1) through the pin (11) to ensure that the positioning pointer (4) and the adjusting screw (2) are on the same axis; S3: Place the positioning hole (5) of the collar (1) onto the outer ring bolt (12) of the pitch bearing or place this device between the two outer ring bolts (12) of the pitch bearing so that the axis of the adjusting screw (2) is aligned with the zero line (13) of the outer ring of the pitch bearing. S4: Tighten the adjusting screw (2) to fix the device; S5: Rotate the positioning pointer (4) to the blade mounting surface and adjust the blade mounting angle until the positioning pointer (4) points to the blade zero line (13).

7. The method of using the wind turbine blade zero-position line correction device according to claim 6, characterized in that: In step S3, when the zero line (13) of the outer ring of the pitch bearing is located in the middle of a certain outer ring bolt (12) of the pitch bearing, the positioning hole (5) of the collar (1) is fitted onto the outer ring bolt (12) of the pitch bearing, and the adjusting screw (2) is tightened so that the V-shaped cut surface (7) abuts against the outer ring bolt (12). At the same time, the two ends of the blade (3) abut against the outer ring bolts (12) on the adjacent sides of the outer ring bolt (12), thus completing the positioning of the device.

8. The method of using the wind turbine blade zero-position line correction device according to claim 6, characterized in that: In step S3, when the zero line (13) of the outer ring of the pitch bearing is located in the middle of the two outer ring bolts (12) of the pitch bearing, the device is placed between the two outer ring bolts (12) of the pitch bearing, and the adjusting screw (2) is tightened so that the positioning cut surfaces (6) on both sides of the collar (1) abut against the two outer ring bolts (12) respectively, and at the same time, the arc part of the blade (3) abuts against the two outer ring bolts (12), thus completing the positioning of the device.

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