Wind generating set blade zero line correcting device and using method thereof

Abstract

The invention discloses a wind generating set blade zero line correcting device and a using method thereof, and relates to the technical field of wind generating set installation, in particular to a wind generating set blade zero line correcting device which comprises a lantern ring, an adjusting screw rod, a fin and a positioning pointer. The lantern ring is provided with a positioning pointer along the axis direction of the adjusting screw rod; the lantern rings are symmetrically arranged in the axis direction of the adjusting screw, positioning holes are formed in the middles of the lantern rings, and positioning sections are arranged at the ends, close to the fins, of the outer walls of the lantern rings. A through hole used for being connected with the lantern ring is formed in the middle of the fin, and the two sides of the fin are symmetrically arranged relative to the through hole. The device has the advantages that the correction precision is improved, errors caused by manual visual inspection can be effectively avoided through a precisely designed mechanical structure and a positioning device, and the operation efficiency and the safety performance of the wind generating set are remarkably improved; installation efficiency is improved, and various working conditions are adapted.

Description

Technical Field

[0001] The invention relates to the technical field of wind generator set installation, and in particular to a wind generator set blade zero line correction device and a use method thereof. Background Art

[0002] As an important component of clean energy, wind power generation plays an increasingly important role in the global energy transformation. With the continuous advancement of wind power generation technology, the capacity and size of wind turbines are increasing, and the precision requirements for installation and commissioning are becoming higher and higher. During the installation of wind turbines, the precise alignment of the zero line of the blade pitch system is the key to ensuring the efficient and safe operation of wind turbines.

[0003] The blade pitch system mainly includes components such as the hub, pitch bearing and blades. In the initial state of the blade pitch (that is, the blade propeller angle is 0°), it is necessary to ensure that the four zero lines - the hub zero line, the pitch bearing outer ring zero line, the pitch bearing inner ring zero line, and the blade zero line - are aligned. Among them, the alignment of the hub zero line, the pitch bearing outer ring zero line, and the pitch bearing inner ring zero line can be completed through mechanical assembly in the production workshop, while the alignment of the blade zero line needs to be performed after the blade is installed on site. Due to the limitations of factors such as the on-site environment, lighting conditions, and high-altitude work safety, this process has many problems with the traditional manual visual calibration method:

[0004] 1. Low correction accuracy: Manual visual calibration is easily affected by human factors and environmental conditions, and it is difficult to ensure high-precision alignment. Especially when the diameter of the wind rotor continues to increase, slight deviations may cause significant aerodynamic imbalance problems, affecting the performance and life of the wind turbine.

[0005] 2. Low installation efficiency: The manual visual calibration process takes a long time, which increases installation time and cost and reduces construction efficiency.

[0006] 3. Great safety hazard: In the high-altitude working environment, manual visual inspection and operation have great safety risks and are prone to accidents.

[0007] Therefore, there is an urgent need for a method and device that can improve the accuracy and efficiency of blade zero line correction while ensuring construction safety. This patent application is aimed at the deficiencies in the above-mentioned background technology and provides a new type of wind turbine blade zero line correction device, aiming to solve the problems existing in the existing 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 above-mentioned prior art and provides a zero position line correction device for blades of a wind turbine generator set, comprising: a collar, an adjusting screw, a wing and a positioning pointer, wherein one end of the collar is connected to the wing through the adjusting screw, and the collar is provided with a positioning pointer along the axis direction of the adjusting screw;

[0009] The collar is symmetrically arranged along the axis direction of the adjusting screw, a positioning hole is arranged in the middle of the collar, and a positioning section is arranged on the outer wall of the collar near the wing end;

[0010] A through hole for connecting the collar is arranged in the middle of the wing, and two sides of the wing are symmetrically arranged relative to the through hole.

[0011] Furthermore, the positioning hole on one side of the collar with the positioning pointer is configured as a V-shaped section.

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

[0013] Furthermore, a bolt hole for passing the adjusting screw is provided in the middle of the positioning protrusion.

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

[0015] Furthermore, both ends of the wing are arranged to be in an arc shape bent toward the collar.

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

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

[0018] S1: Insert the gasket into the adjusting bolt, and then insert the collar protrusion into the wing through hole;

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

[0020] S3: Sleeve the collar positioning hole on the outer ring bolt of the pitch bearing or place the device between the two outer ring bolts of the pitch bearing, so that the axis of the adjusting bolt is aligned with the zero position line of the outer ring of the pitch bearing;

[0021] S4: Tighten the adjusting bolt to secure the device.

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

[0023] Furthermore, in step S3, when the zero position line of the outer ring of the pitch bearing is located in the middle of an outer ring bolt of the pitch bearing, the collar positioning hole is sleeved on the outer ring bolt of the pitch bearing, and the adjusting bolt is tightened so that the V-shaped section presses against the outer ring bolt, and at the same time, the two ends of the wing press against the outer ring bolts adjacent to the outer ring bolt, thereby completing the positioning of the device.

[0024] Further, in step S3, when the zero position line of the outer ring of the variable pitch bearing is located in the middle of the two variable pitch bearing outer ring bolts, the device is set between the above-mentioned two variable pitch bearing outer ring bolts, and the adjusting bolts are tightened so that the two positioning cut surfaces are respectively pressed against the above-mentioned two outer ring bolts, and at the same time, the arc part of the wing is pressed against the above-mentioned two outer ring bolts to complete 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 wind turbine blade zero line correction device, which has significant beneficial effects in the following aspects:

[0027] 1. Improve calibration accuracy:

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

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

[0030] 2. Improve installation efficiency:

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

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

[0033] 3. Adapt to various working conditions:

[0034] The device is flexibly designed and can adapt to various working conditions such as the zero line of the outer ring of the variable pitch bearing is set between two outer ring bolts or in the middle of an outer ring bolt, and has wide applicability.

[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 wind turbines of different models.

[0036] 4. Enhanced Security:

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

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

[0039] 5. Reduce maintenance costs:

[0040] By improving the accuracy of blade installation and correction, operational failures and maintenance requirements caused by blade angle deviation are reduced, reducing long-term maintenance costs.

[0041] Through the above beneficial effects, it can be seen that the wind turbine blade zero line correction device provided by this patent application has significant advantages in improving installation quality, improving construction efficiency, ensuring construction safety, reducing maintenance costs, etc., and is of great significance to the development of the wind power industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of the correction device in the present invention;

[0043] Figure 2 is a top view of the correction device of the present invention;

[0044] Figure 3 It is a schematic structural diagram of the present invention used in a case where the zero position line of the outer ring of a variable pitch bearing is set between two bolts;

[0045] Figure 4 It is a schematic structural diagram of the present invention used in a case where the zero line of the outer ring of a variable pitch bearing is set in the middle of a single bolt;

[0046] Figure 5 It is a schematic diagram of the ring structure of the present invention;

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

[0048] Markings in the figure:

[0049] 1- collar, 2- adjusting screw, 3- wing, 4- positioning pointer, 5- positioning hole, 6- positioning section, 7- V-shaped section, 8- through hole, 9- positioning bump, 10- gasket, 11- pin shaft, 12- outer ring bolt, 13- zero line.

[0050] Specific Examples

[0051] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0052] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] Embodiment 1

[0054] In this embodiment, if Figure 1 As shown, a zero position line correction device for blades of a wind turbine generator set comprises: a collar 1, an adjusting screw 2, a wing 3 and a positioning pointer 4, one end of the collar 1 is connected to the wing 3 through the adjusting screw 2, and the collar 1 is provided with a positioning pointer 4 along the axis direction of the adjusting screw 2;

[0055] The collar 1 is symmetrically arranged along the axis direction of the adjusting screw 2, a positioning hole 5 is arranged in the middle of the collar 1, and a positioning cut surface 6 is arranged on the outer wall of the collar 1 near the end of the wing 3;

[0056] A through hole 8 for connecting the collar 1 is provided in the middle of the wing 3 , and two sides of the wing 3 are symmetrically arranged relative to the through hole 8 .

[0057] The collar 1 adopts an annular structure, with a positioning hole 5 for being mounted on the outer ring bolt 12 in the middle, and a positioning cut surface 6 is provided on the outer wall close to the wing 3. Two gaps are formed between the positioning cut surface 6 and the wing 3 for placing the outer ring bolt 12, and the positioning function is realized after tightening the bolt. It is worth noting that this device adopts a symmetrical design to ensure the accuracy of positioning.

[0058] Specifically, Figure 1 As shown, the positioning section 6 is set as two inclined surfaces, which are located on both sides of the positioning protrusion 9 of the ring 1, and the extended line of the inclined surface is V-shaped, which is convenient for cooperating with the wing 3 to clamp the outer ring bolt 12. The design of the positioning section 6 improves the stability and positioning accuracy of the device during installation, especially in the high-altitude working environment, and can effectively avoid shaking caused by factors such as wind, ensuring the smooth progress of the correction work.

[0059] Through this structural design, the device can be easily installed on the outer ring bolt 12 of the variable pitch bearing. By using the cooperation of the positioning pointer 4 and the adjusting screw 2, the blade angle can be accurately adjusted to ensure that the blade zero position line 13 is aligned with the outer ring zero position line 13 of the variable pitch bearing, thereby improving the installation accuracy.

[0060] Furthermore, the collar 1 is provided with a positioning hole 5 on one side of the positioning pointer 4 which is configured as a V-shaped section 7 .

[0061] A bolt is sleeved in the positioning hole 5, and after the adjusting screw is locked, the device can be positioned and locked by utilizing the V-shaped characteristics to prevent displacement during the calibration process, thereby affecting the calibration accuracy.

[0062] The design of the V-shaped section 7 improves the stability and positioning accuracy of the device during installation, especially in high-altitude working environments, and can effectively avoid shaking caused by factors such as wind, thereby ensuring smooth calibration work.

[0063] Furthermore, the through hole 8 of the wing piece 3 is set as a square hole, and one end of the ring 1 connected to the wing piece 3 is provided with a square positioning protrusion 9 matching therewith.

[0064] The coordinated use of the square hole and the square positioning protrusion 9 improves the assembly accuracy and stability of the wing 3 and the collar 1, and ensures the reliability of the device when adjusting the blade angle.

[0065] Furthermore, a bolt hole for passing the adjusting screw rod 2 is provided in the middle of the positioning protrusion 9 .

[0066] The bolt hole is provided with an internal thread matching the adjusting screw 2. By providing the bolt hole, the installation of the adjusting screw 2 is made more stable, loosening or slipping during the adjustment process is avoided, and the overall performance of the device is improved.

[0067] Furthermore, the adjusting screw 2 includes a screw body and a gasket 10 .

[0068] Since the wing 3 uses a square hole without an internal thread, the screw head of the adjusting screw 2 cannot be fixed well. The pressure is transmitted through the gasket 10 to lock the wing 3. The use of the gasket 10 improves the durability and stability of the adjusting screw 2 and ensures the reliability of the device in long-term use.

[0069] Furthermore, both ends of the wing piece 3 are configured to be in an arc shape bent toward the collar 1 .

[0070] The arc-shaped wing 3 improves the adaptability of the device during installation, especially when the zero line 13 of the outer ring of the variable pitch bearing is located between the two outer ring bolts 12, so that the device can be better positioned and fixed.

[0071] Furthermore, the positioning pointer 4 is rotatably disposed on the collar 1 via a pin shaft 11 .

[0072] The rotatable design of the positioning pointer 4 improves the flexibility of the device, allowing the operator to adjust and correct the blade angle more conveniently.

[0073] Embodiment 2

[0074] Based on the embodiment, a method for using a zero position line correction device for a blade of a wind turbine generator set includes the following steps:

[0075] S1: Insert the gasket 10 into the adjusting bolt, and then insert the projection of the collar 1 into the through hole 8 of the wing 3;

[0076] S2: Insert the adjusting bolt 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, ensuring that the positioning pointer 4 and the adjusting bolt are located on the same axis;

[0077] S3: Sleeve the positioning hole 5 of the collar 1 onto the outer ring bolt 12 of the pitch bearing or place the device between the two outer ring bolts 12 of the pitch bearing, so that the axis of the adjusting bolt is aligned with the zero position line 13 of the outer ring of the pitch bearing;

[0078] S4: Tighten the adjusting bolt to secure the device.

[0079] S5: Rotate the positioning pointer 4 to the blade installation surface, and adjust the blade installation angle until the positioning pointer 4 points to the blade zero position line 13.

[0080] This method of use is simple, fast, and easy to operate, and can significantly improve the efficiency and accuracy of the blade zero line 13 correction, while reducing the high-altitude operation time, construction costs, and safety risks.

[0081] Furthermore, in step S3, when the zero position line 13 of the outer ring of the pitch bearing is located in the middle of an outer ring bolt 12 of the pitch bearing, the positioning hole 5 of the ring 1 is sleeved on the outer ring bolt 12 of the pitch bearing, and the adjusting bolt is tightened so that the V-shaped section 7 is pressed against the outer ring bolt 12, and at the same time, the two ends of the wing 3 are pressed against the outer ring bolt 12 adjacent to the outer ring bolt 12, thereby completing the positioning of the device.

[0082] This method is applicable to the case where the zero line 13 of the outer ring of the pitch bearing is set in the middle of a single bolt, and can ensure the stability and positioning accuracy of the device during installation.

[0083] 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 set between the two outer ring bolts 12 of the pitch bearing, and the adjusting bolts are tightened so that the two positioning cut surfaces 6 are respectively pressed against the two outer ring bolts 12, and at the same time, the arc part of the wing 3 is pressed against the two outer ring bolts 12 to complete the positioning of the device.

[0084] This method is applicable to the case where the zero position line 13 of the outer ring of the pitch bearing is set between two bolts, which can ensure the stability and positioning accuracy of the device during installation and improve the efficiency and accuracy of the correction of the blade zero position line 13.

[0085] The above description is only 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 in the protection scope of the invention.

Claims

1. A wind turbine blade zero line correction device, characterized in that: include: A collar (1), an adjusting screw (2), a wing (3) and a positioning pointer (4), wherein one end of the collar (1) is connected to the wing (3) via the adjusting screw (2), and the collar (1) is provided with a positioning pointer (4) along the axial direction of the adjusting screw (2); The collar (1) is symmetrically arranged along the axial direction of the adjusting screw (2); a positioning hole (5) is arranged in the middle of the collar (1), and a positioning cut surface (6) is arranged on the outer wall of the collar (1) near the end of the wing (3); a through hole (8) for connecting the collar (1) is arranged in the middle of the wing (3), and the two sides of the wing (3) are symmetrically arranged relative to the through hole (8).

2. A wind turbine blade zero line correction device according to claim 1, characterized in that: The collar (1) is provided with a positioning hole (5) on one side of the positioning pointer (4) which is configured as a V-shaped section (7).

3. According to the zero line correction device for blades of a wind turbine generator set as described in claim 1, it is characterized by: The through hole (8) of the wing (3) is configured as a square hole, and one end of the collar (1) connected to the wing (3) is provided with a square positioning protrusion (9) matching the same.

4. A wind turbine blade zero line correction device according to claim 3, characterized in that: A bolt hole for passing the adjusting screw rod (2) is provided in the middle of the positioning protrusion (9).

5. The zero position line correction device for blades of a wind turbine generator set according to claim 1, characterized in that: The adjusting screw (2) comprises a screw body and a gasket (10).

6. The zero position line correction device for blades of a wind turbine generator set according to claim 1, characterized in that: Both ends of the wing (3) are arranged in an arc shape that bends toward the collar (1).

7. The zero position line correction device for blades of a wind turbine generator set according to claim 1, characterized in that: The positioning pointer (4) is rotatably arranged on the collar (1) via a pin shaft (11).

8. A method for using a zero-line correction device for a blade of a wind turbine generator set, applied to a zero-line correction device for a blade of a wind turbine generator set as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Insert the washer (10) into the adjusting bolt, and then insert the projection of the collar (1) into the through hole (8) of the wing (3); S2: Insert the adjusting bolt into the wing (3) and the collar (1) assembly in sequence, and set the positioning pointer (4) on the collar (1) through the pin (11), ensuring that the positioning pointer (4) and the adjusting bolt are located on the same axis; S3: Sleeve the positioning hole (5) of the collar (1) onto the outer ring bolt (12) of the pitch bearing or place the device between the two outer ring bolts (12) of the pitch bearing, so that the axis of the adjusting bolt is aligned with the zero position line (13) of the outer ring of the pitch bearing; S4: Tighten the adjusting bolt to secure the device. S5: Rotate the positioning pointer (4) to the blade installation surface and adjust the blade installation angle until the positioning pointer (4) points to the blade zero position line (13).

9. A method for using a zero position line correction device for blades of a wind turbine generator set according to claim 8, characterized in that: In the step S3, when the zero position 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 sleeved on the outer ring bolt (12) of the pitch bearing, and the adjusting bolt is tightened so that the V-shaped section (7) is pressed against the outer ring bolt (12), and at the same time, the two ends of the wing (3) are pressed against the outer ring bolts (12) on the adjacent two sides of the outer ring bolt (12), thereby completing the positioning of the device.

10. The method for using the zero position line correction device for blades of a wind turbine generator set according to claim 8, characterized in that: In the 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 arranged between the two outer ring bolts (12) of the pitch bearing, and the adjusting bolts are tightened so that the positioning cut surfaces (6) on both sides of the collar (1) are respectively pressed against the two outer ring bolts (12), and at the same time, the arc part of the wing (3) is pressed against the two outer ring bolts (12), thereby completing the positioning of the device.

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