Detection device, system and detection method for measuring center distance and position degree of inclined hole on wind power flange

Abstract

The application provides a detection device, system and method for measuring the center distance and position degree of a slant hole on a wind power flange, wherein the detection device comprises an insertion element, a horizontal positioning element and a vertical positioning element; the insertion element is a columnar body, the diameter of the circumscribed circle of the cross section of the columnar body is the same as the diameter of the slant hole to be detected, and the columnar body is used to be inserted into the slant hole to be detected; the horizontal positioning element is provided with a horizontal positioning surface on the side close to the insertion element, and the horizontal positioning surface is used to be attached to the wind power flange plane at the slant hole to be detected; the center line of the vertical positioning element and the center line of the insertion element have an included angle, and the angle of the included angle is the same as the inclination angle of the slant hole to be detected, so as to cooperate with an external detection equipment to detect the center distance and / or the position degree of the slant hole to be detected. The detection device provided by the application has the advantages of small volume, light weight and convenient carrying, and can quickly and accurately cooperate with a laser tracker to detect the center distance and the position degree of the slant hole on the wind power flange without being limited by the site environment, thereby improving the detection flexibility.

Description

Technical Field

[0001] This invention relates to the field of wind turbine flange inspection technology, and in particular to a testing device, system and method for measuring the center distance and position of oblique holes on wind turbine flanges. Background Technology

[0002] Currently, many wind turbine manufacturers, both domestically and internationally, prioritize floating wind turbines when designing large-megawatt offshore wind turbines. In this design, the bottom flange of the corresponding large-megawatt floating wind turbine requires a novel design, specifically, designing the axis of the bolt holes or threaded holes to form a certain angle with the bottom plane of the flange.

[0003] According to the design requirements of the new wind turbine flange, it is necessary to drill oblique holes on the flange and inspect the position and center distance of these oblique holes to check whether they meet the design requirements. However, when using existing testing technology to inspect the position and center distance of the oblique holes on the wind turbine flange, it is difficult to achieve rapid and accurate inspection because the axis of the bolt holes or threaded holes on the flange forms a certain angle with the bottom plane of the flange.

[0004] Meanwhile, existing testing equipment, such as large-scale coordinate measuring machines, is expensive, bulky, and takes up a lot of space. It also has high requirements for the flatness of the test surface. Using these devices to test the oblique holes on wind turbine flanges will increase the manufacturing cost of such wind turbine flanges. In addition, the testing is not flexible enough to test the oblique holes on wind turbine flanges in some poor conditions. Moreover, it is difficult to move and cannot be tested at any time.

[0005] Therefore, there is a need to develop a new type of detection device, system, and method for measuring the center distance and position of the inclined holes on wind turbine flanges, in order to overcome and improve one or more of the shortcomings of the existing technologies, or at least to propose an effective alternative method to solve the above problems. Summary of the Invention

[0006] To address the aforementioned shortcomings, this invention provides a detection device, system, and method for measuring the center distance and position of inclined holes on wind turbine flanges. The detection device provided in this application can be used in conjunction with a laser tracker to quickly and accurately detect the center distance and position of inclined holes on wind turbine flanges. It is not limited by site conditions, is portable, and improves the flexibility of the detection process.

[0007] This invention is achieved through the following technical solution:

[0008] One embodiment of the present invention provides a detection device for measuring the center distance and positional accuracy of oblique holes on a wind turbine flange, comprising:

[0009] An insertion element, which is cylindrical, has a cross-sectional diameter whose circumscribed circle diameter is the same as the diameter of the oblique hole to be detected, and is used to insert the insertion element into the oblique hole to be detected.

[0010] A horizontal positioning element is disposed on the upper part of the insertion element. A horizontal positioning surface is provided on the side of the horizontal positioning element near the insertion element. The horizontal positioning surface is used to fit the wind turbine flange plane at the oblique hole to be tested.

[0011] A vertical positioning element is disposed above the horizontal positioning element. The centerline of the vertical positioning element and the centerline of the insertion element have an angle, the angle of which is the same as the inclination angle of the inclined hole to be tested. The vertical positioning element is used to cooperate with external testing equipment to detect the center distance and / or position of the inclined hole to be tested.

[0012] The detection device described in this embodiment of the invention is equipped with an insertion element, a horizontal positioning element, and a vertical positioning element. The insertion element guides the device to be inserted into the oblique hole to be detected. The horizontal positioning element contacts the plane on the wind turbine flange, using the plane of the wind turbine flange as a positioning reference. Then, the vertical positioning element cooperates with external detection equipment, such as a laser tracker, to measure and inspect the position and center distance of the oblique hole to be detected. This allows for quick and convenient detection of the center distance and position of the oblique hole without being limited by the site environment. Furthermore, the device is portable and greatly improves the flexibility of the detection.

[0013] Furthermore, the insertion element is in the form of a column, and the cross-section of the column is one of a square, a triangle, or a polygon.

[0014] Furthermore, the insertion element is cylindrical.

[0015] In a preferred embodiment, the detection device includes a series of insertion elements with different tilt angles, the insertion elements being detachably connected to the horizontal positioning element.

[0016] Furthermore, the horizontal positioning element is provided with a through hole, and the insertion element is provided with a threaded hole, so that the insertion element and the horizontal positioning element can be connected by screws.

[0017] Furthermore, the upper surface of the insertion element is provided with a groove structure, and the lower surface of the horizontal positioning element is provided with a groove structure that matches the groove structure. The groove structure and the groove structure cooperate to connect the insertion element with the horizontal positioning element.

[0018] Preferably, the tilt angles of the series of insertion elements are 15° to 25°.

[0019] The detection device exemplified in this embodiment of the invention, by setting a series of insertion elements with different tilt angles, can select different insertion elements according to the tilt angle of the inclined hole to be detected on the wind turbine flange, so that the detection device is applicable to inclined holes to be detected with different angles, and can detect their center distance and position.

[0020] In a preferred embodiment, the insertion element is movably disposed at the lower part of the horizontal positioning element, and the insertion element is capable of swinging along the center line of the horizontal positioning element. The insertion element is inserted into the oblique hole to be tested, and the horizontal positioning element is adjusted so that the horizontal positioning surface of the horizontal positioning element is in contact with the wind turbine flange plane at the oblique hole to be tested.

[0021] The detection device of the present invention embodiment sets the insertion element and the horizontal positioning element to be movably connected. After the insertion element is inserted into the oblique hole to be detected, the horizontal positioning element is rotated to perform horizontal positioning. This allows the detection device to be applicable to oblique holes to be detected with different angles, and to detect their center distance and position.

[0022] Furthermore, the horizontal positioning element has an arc-shaped protrusion on the side near the insertion element, and the arc-shaped protrusion has a first toothed portion. The upper part of the insertion element has an arc-shaped groove that matches the arc-shaped protrusion, and the arc-shaped groove has a second toothed portion. The first toothed portion and the second toothed portion cooperate to enable the insertion element to swing along the center line of the horizontal positioning element.

[0023] Preferably, the first toothed portion and the second toothed portion are made of a flexible material.

[0024] Furthermore, the horizontal positioning element is provided with a pair of ear plates on the side near the insertion element, and a connecting rod is provided between the ear plates. The upper part of the insertion element is provided with a through hole, and the connecting rod can pass through the through hole to enable the horizontal positioning element to be movably connected to the insertion element.

[0025] In a preferred embodiment, a blind hole is provided at the center of the bottom of the insertion element. The detection device exemplified by this embodiment of the invention, by providing a blind hole at the bottom of the insertion element, can effectively reduce the weight of the detection device, making it more convenient to carry.

[0026] In a preferred embodiment, the outer bottom edge of the insertion element is chamfered. The detection device exemplified in this embodiment of the invention features a chamfer on the outer bottom edge of the insertion element to facilitate guidance.

[0027] In a preferred embodiment, the surface roughness of the insert element is Ra1 to 2, and the cylindricity of the insert element is 0.05 to 0.15 mm.

[0028] In a preferred embodiment, the surface roughness of the horizontal positioning surface of the horizontal positioning element is Ra0.8, and the parallelism of the horizontal positioning surface is 0.05 to 0.15 mm.

[0029] In a preferred embodiment, the cylindricity of the vertical positioning element is 0.05 to 0.15 mm.

[0030] The detection device exemplified in this embodiment of the invention can effectively improve detection accuracy by setting parameters such as the surface roughness and cylindricity of the inserted element, the surface roughness and parallelism of the horizontal positioning element, and the cylindricity of the vertical positioning element.

[0031] Another embodiment of the present invention provides a detection system for measuring the center distance and position of inclined holes on a wind turbine flange, comprising a detection device and a detection workbench as described in any of the preceding embodiments, wherein the detection workbench comprises:

[0032] The workbench body has a loading surface on its upper part, which is used to support the wind turbine flange with the inclined hole to be tested.

[0033] A level detection element is disposed on the worktable body to detect and display the levelness of the worktable body;

[0034] A leveling element is detachably mounted on the worktable body for adjusting the levelness of the worktable body.

[0035] Mounting components are located at the center of the workbench body for detachably mounting external testing equipment.

[0036] The detection system exemplified in this embodiment of the invention places the wind turbine flange on the loading plane by setting up a detection workbench. Then, the levelness of the workbench body is detected by a level detection element, and the leveling element is adjusted so that the detection workbench can be used without being restricted by the site and ensure its levelness. At the same time, an external detection device is installed at the center of the detection workbench by a mounting component to measure the center distance and position of the oblique holes on the wind turbine flange. This makes the detection unaffected by the site environment and improves the flexibility and accuracy of the detection.

[0037] In a preferred embodiment, the testing worktable further includes a rotary drive device, which can be connected to an external testing device to drive the external testing device to rotate.

[0038] The detection system exemplified in this embodiment of the invention, by setting a rotation drive device, can drive an external detection device to rotate freely in 360°, thereby enabling the external detection device to track the vertical positioning element on the detection device in 360° without blind spots.

[0039] Another aspect of this invention provides a method for measuring the center distance and position of oblique holes on a wind turbine flange, wherein the method employs a detection device for measuring the center distance and position of oblique holes on a wind turbine flange as described in any of the preceding embodiments, and the detection method includes the following steps:

[0040] (1) Place the wind turbine flange with the inclined hole to be tested on the loading plane of the testing workbench;

[0041] (2) Connect the external testing equipment to the mounting components of the testing workbench;

[0042] (3) Insert the insertion element of the detection device into the oblique hole to be detected;

[0043] (4) Fit the horizontal positioning surface of the horizontal positioning element of the detection device with the plane of the wind turbine flange at the oblique hole to be detected;

[0044] (5) Use external detection equipment to locate the vertical positioning element of the detection device;

[0045] (6) The center distance of the oblique hole to be tested is obtained by fitting with Inspire software, and the position degree of the oblique hole to be tested is obtained according to the theoretical position coordinates.

[0046] In a preferred embodiment, the detection method further includes:

[0047] Repeat steps (1) to (5) above to detect multiple oblique holes on the same wind turbine flange. Use Inspire software to fit the center distance of the multiple oblique holes to be detected, and obtain the position degree of the multiple oblique holes to be detected according to the theoretical position coordinates.

[0048] The theoretical standard positional tolerance and center distance required by the drawings are input using Inspire software to obtain the inspection report. Attached Figure Description

[0049] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0050] Figure 1 A schematic diagram illustrating a detection device for measuring the center distance and position of oblique holes on a wind turbine flange, as described in an embodiment of the present invention.

[0051] Figure 2 A schematic diagram illustrating the structure of a detection device inserted into a slanted hole to be detected on a wind turbine flange in one embodiment of the present invention.

[0052] Figure 3 This is a schematic diagram illustrating another structure of the detection device for measuring the center distance and position of the inclined holes on a wind turbine flange, as described in one embodiment of the present invention.

[0053] Figure 4 This is a schematic diagram illustrating another structure of the detection device for measuring the center distance and position of the inclined holes on a wind turbine flange, as described in one embodiment of the present invention.

[0054] Figure 5 This is a schematic diagram illustrating another structure of the detection device for measuring the center distance and position of the inclined holes on a wind turbine flange, as described in one embodiment of the present invention.

[0055] Figure 6 This is a schematic diagram illustrating another structure of the detection device for measuring the center distance and position of the inclined holes on a wind turbine flange, as described in one embodiment of the present invention.

[0056] Figure 7 This is a schematic diagram illustrating the structure of a detection workbench in one embodiment of the present invention.

[0057] Figure label:

[0058] 1-Vertical positioning element; 2-Horizontal positioning element; 3-Insertion element; 4-Worktable body; 5-Horizontal adjustment element; 6-Mounting component; 7-Rotary drive device;

[0059] 100 - Wind turbine flange; 101 - Angled hole to be tested. Detailed Implementation

[0060] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit and scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0061] First, the technical concept of the technical solution disclosed in this invention will be explained. With the development of large-megawatt floating wind turbines, it is necessary to open oblique holes on wind turbine flanges and inspect the center distance and position of these oblique holes to check whether they meet the design requirements. However, because the axis of the oblique hole on the wind turbine flange forms a certain angle with the bottom plane of the flange, it is difficult to quickly and accurately inspect its center distance or position. At the same time, existing testing equipment, such as large-scale coordinate measuring machines, is expensive, bulky, occupies a lot of space, and has very high requirements for the flatness of the testing surface. Using these devices to inspect the oblique holes on wind turbine flanges will increase the manufacturing cost of such wind turbine flanges; on the other hand, the inspection flexibility is poor, and it is not possible to inspect the oblique holes on wind turbine flanges in places with poor conditions; moreover, it is difficult to move and cannot be inspected at any time.

[0062] Therefore, there is a need to develop a new type of detection device, system, and method for measuring the center distance and position of the inclined holes on wind turbine flanges, in order to overcome and improve one or more of the shortcomings of the existing technologies, or at least to propose an effective alternative method to solve the above problems.

[0063] The specific solution adopted is as follows:

[0064] This embodiment provides a testing device for measuring the center distance and positional accuracy of oblique holes on wind turbine flanges. For example... Figure 1 As shown, the detection device for measuring the center distance and position of the inclined holes on a wind turbine flange includes an insertion element 3, a horizontal positioning element 2, and a vertical positioning element 1. The insertion element 3 is cylindrical, and the diameter of the outer circle of the cross-section of the cylindrical body is the same as the diameter of the inclined hole 101 to be detected. The insertion element 3 is inserted into the inclined hole 101 to be detected. The horizontal positioning element 2 is located on the upper part of the insertion element 3, and a horizontal positioning surface is provided on the side of the horizontal positioning element 2 near the insertion element 3. The horizontal positioning surface is used to fit the plane of the wind turbine flange 100 at the inclined hole 101 to be detected. The vertical positioning element 1 is located on the upper part of the horizontal positioning element 2, and there is an angle between the center line of the vertical positioning element 1 and the center line of the insertion element 3. The angle of the angle is the same as the inclination angle of the inclined hole 101 to be detected. The vertical positioning element 1 is used to cooperate with external detection equipment to detect the center distance and / or position of the inclined hole 101 to be detected.

[0065] The detection device in this embodiment is configured with an insertion element 3, a horizontal positioning element 2, and a vertical positioning element 1, as follows: Figure 2 As shown, when testing the center distance and position of the oblique hole 101 to be tested on the wind turbine flange 100, the insertion element 3 is used to guide the testing device to be inserted into the oblique hole 101 to be tested on the wind turbine flange 100; the horizontal positioning element 2 is used to fit against the plane of the oblique hole 101 to be tested on the wind turbine flange 100, and the plane of the wind turbine flange 100 is used as the positioning reference; then the vertical positioning element 1 is used in conjunction with external testing equipment, and the center distance and / or position of the oblique hole 101 to be tested are measured and inspected with the help of external testing equipment such as a laser tracker.

[0066] The detection device exemplified in this embodiment has a simple structure, small size, and low manufacturing cost, making it very portable. It can use the plane of the wind turbine flange as a positioning reference surface and, in conjunction with external detection equipment, conveniently and quickly detect the center distance and position of the oblique holes on the wind turbine flange. It is completely unrestricted by external conditions such as the detection site and environment, and can detect the oblique holes on the wind turbine flange at sea or in sites with limited space and poor flatness, greatly improving the flexibility of detection and reducing detection costs.

[0067] In this embodiment, a laser tracker is preferably used as the external testing device. Of course, it is understood that other instruments can also be used as the external testing device, as long as they can cooperate with the inspection device in this embodiment to measure the center distance and position of the oblique holes on the wind turbine flange.

[0068] In this embodiment, the specific structure of the insertion element 3 can adopt one of the following embodiments:

[0069] Implementation method 1: The inserted element 3 is in the form of a column. The cross-section of the column can be, for example, a square, a triangle, or a polygon, as long as the diameter of the circumscribed circle of the cross-section of the column is the same as the diameter of the oblique hole 101 to be detected.

[0070] Implementation method 2: The insertion element 3 is cylindrical, and the diameter of the cylinder is the same as the diameter of the oblique hole 101 to be tested.

[0071] In this embodiment, the specific structure between the insertion element 3 and the horizontal positioning element 2 can adopt one of the following embodiments:

[0072] Implementation method 1: The detection device includes a series of insertion elements 3 with different tilt angles, and the insertion elements 3 can be detachably connected to the horizontal positioning element 2.

[0073] like Figure 3 As shown, the horizontal positioning element 2 is provided with a through hole, and the insertion element 3 is provided with a threaded hole. The insertion element 3 and the horizontal positioning element 2 can be connected by screws.

[0074] like Figure 4 As shown, the upper surface of the insertion element 3 is provided with a groove structure, and the lower surface of the horizontal positioning element 2 is provided with a groove structure that matches the groove structure. The groove structure and the groove structure cooperate to connect the insertion element 3 and the horizontal positioning element 2.

[0075] By setting a series of insertion elements 3 with different tilt angles, the insertion elements 3 with the same tilt angle can be selected and connected to the horizontal positioning element 2 according to the tilt angle of the inclined hole 101 to be tested on the wind power flange 100, so that the testing device can be used for the inclined hole 101 to be tested at different angles to test its center distance and position.

[0076] Preferably, the tilt angles of the series of insertion elements 3 are 15° to 25°.

[0077] Implementation method 2: The insertion element 3 is movably disposed at the lower part of the horizontal positioning element 2. The insertion element 3 can swing along the center line of the horizontal positioning element 2. The insertion element 3 is inserted into the oblique hole 101 to be tested. The horizontal positioning element 2 is adjusted so that the horizontal positioning surface of the horizontal positioning element 2 is in contact with the plane of the wind power flange 100 at the oblique hole 101 to be tested.

[0078] like Figure 5 As shown, the horizontal positioning element 2 has an arc-shaped protrusion on the side near the insertion element 3. The arc-shaped protrusion has a first toothed portion. The upper part of the insertion element 3 has an arc-shaped groove that matches the arc-shaped protrusion. The arc-shaped groove has a second toothed portion. The first toothed portion and the second toothed portion cooperate to allow the insertion element 3 to swing along the center line of the horizontal positioning element 2.

[0079] Preferably, the first toothed portion and the second toothed portion are made of a flexible material, such as flexible plastic.

[0080] like Figure 6 As shown, a pair of ear plates are provided on the side of the horizontal positioning element 2 near the insertion element 3, and a connecting rod is provided between the ear plates. A through hole is provided on the upper part of the insertion element 3, and the connecting rod can pass through the through hole to movably connect the horizontal positioning element 2 and the insertion element 3 together.

[0081] The insertion element 3 and the horizontal positioning element 2 are configured to be movably connected. After the insertion element 3 is inserted into the oblique hole 101 to be tested, the horizontal positioning element 2 is rotated to perform horizontal positioning. This allows the testing device to be used for oblique holes 101 with different angles to test their center distance and position.

[0082] In this embodiment, a blind hole is provided at the center of the bottom of the insertion element 3. Providing a blind hole at the bottom of the insertion element 3 can effectively reduce the weight of the detection device, making the detection device more convenient to carry.

[0083] In this embodiment, the bottom outer edge of the insertion element 3 is chamfered. The chamfer on the bottom outer edge of the insertion element 3 facilitates guidance, making it easier to insert the insertion element 3 into the angled hole on the wind turbine flange 100.

[0084] In this embodiment, the surface roughness of the insertion element 3 is Ra1 to 2, and the cylindricity of the insertion element 3 is 0.05 to 0.15 mm.

[0085] In this embodiment, the surface roughness of the horizontal positioning surface of the horizontal positioning element 2 is Ra0.8, and the parallelism of the horizontal positioning surface is 0.05~0.15mm.

[0086] In this embodiment, the cylindricity of the vertical positioning element 1 is 0.05 to 0.15 mm.

[0087] By setting parameters such as the surface roughness and cylindricity of the insertion element 3, the surface roughness and parallelism of the horizontal positioning element 2, and the cylindricity of the vertical positioning element 1, the detection accuracy can be effectively improved.

[0088] This embodiment also provides a detection system for measuring the center distance and positional accuracy of the inclined holes on a wind turbine flange 100. For example... Figure 7 As shown, the testing system includes a testing device and a testing workbench for measuring the center distance and position of the inclined holes on a wind turbine flange, as described in any of the above-mentioned embodiments. The testing workbench includes a workbench body 4, a horizontal detection element, a horizontal adjustment element 5, and a mounting component 6. A loading plane is provided on the upper part of the workbench body 4 to support the wind turbine flange 100 with the inclined holes 101 to be tested. The horizontal detection element is mounted on the workbench body 4 to detect and display the horizontality of the workbench body 4. The horizontal adjustment element 5 is detachably mounted on the workbench body 4 to adjust the horizontality of the workbench body 4. The mounting component 6 is located at the center of the workbench body 4 for detachably mounting external testing equipment.

[0089] In this embodiment, the worktable body 4 can be, for example, a flat disc. The leveling element 5 can be, for example, an adjusting shim. The leveling detection element can be, for example, a level mounted on the worktable body. The mounting component 6 can be, for example, two flanges arranged in pairs, each flange having bolt holes evenly distributed along its circumference. Tightening or loosening the bolts allows for easy installation of external testing equipment at the center of the worktable body 4.

[0090] When using the inspection system exemplified in this embodiment, first place the workbench on the site. Adjust the positions of the four adjusting shims according to the levelness displayed on the leveling element to ensure the workbench is level. Then, install the external inspection equipment at the center of the workbench using mounting components to measure the position and center distance of the oblique holes on the wind turbine flange. Using the inspection system exemplified in this embodiment to inspect the oblique holes on the wind turbine flange allows for adjustments to the levelness without site limitations, improving the flexibility and accuracy of the inspection.

[0091] In this embodiment, the inspection workbench also includes a rotary drive device 7, which can be connected to external inspection equipment to drive the external inspection device to rotate. The rotary drive device 7 can be, for example, a motor, to drive the external inspection equipment installed at the center of the workbench body to rotate freely 360°, so that the laser tracker can perform 360° tracking of the vertical positioning element 1 on the inspection device without blind spots, and detect the center distance and position of all the oblique holes to be inspected on the wind turbine flange.

[0092] This embodiment also provides a method for measuring the center distance and positional accuracy of inclined holes on a wind turbine flange. Implementation Method 1:

[0093] Measuring the center distance and position of the inclined holes on a wind turbine flange using the testing device described in any of the above-mentioned methods includes the following steps:

[0094] (1) Place the wind turbine flange 100 with the inclined hole 101 to be inspected on a flat surface;

[0095] (2) Place the external testing equipment on a flat surface, and in the center area of ​​the wind turbine flange 100;

[0096] (3) Insert the insertion element 3 of the detection device into the oblique hole 101 to be detected;

[0097] (4) Fit the horizontal positioning surface of the horizontal positioning element 2 of the detection device with the plane of the wind power flange 100 at the oblique hole 101 to be detected;

[0098] (5) Use external testing equipment to locate the vertical positioning element 1 of the testing device;

[0099] (6) The center distance of the oblique hole 101 to be tested is obtained by fitting with Inspire software, and the position degree of the oblique hole 101 to be tested is obtained according to the theoretical position coordinates.

[0100] Repeat steps (1) to (5) above to detect multiple oblique holes 101 on the same wind turbine flange 100. Use Inspire software to fit the center distance of multiple oblique holes 101 to be detected, and obtain the position degree of multiple oblique holes 101 to be detected according to the theoretical position coordinates.

[0101] Finally, the theoretical standard positional accuracy and center distance required by the drawings are input using Inspire software to obtain the inspection report.

[0102] The detection method exemplified in this embodiment can use the plane of the wind turbine flange as a positioning reference surface. It employs a simple, small, and portable inspection device, combined with external testing equipment, to conveniently and quickly detect the center distance and position of the oblique holes on the wind turbine flange. It is completely unrestricted by external conditions such as the testing site and environment. It can be used to detect the oblique holes on the wind turbine flange at sea or in sites with limited space and poor flatness, greatly improving the flexibility of the testing and reducing the testing cost.

[0103] Implementation Method 2:

[0104] Measuring the center distance and position of the inclined holes on a wind turbine flange using the detection system described in any of the above-mentioned methods includes the following steps:

[0105] (1) Place the wind turbine flange 100 with the oblique hole 101 to be tested on the loading plane of the testing workbench;

[0106] (2) Connect the external testing equipment to the mounting component 6 of the testing workbench;

[0107] (3) Insert the insertion element 3 of the detection device into the oblique hole 101 to be detected;

[0108] (4) Fit the horizontal positioning surface of the horizontal positioning element 2 of the detection device with the plane of the wind power flange 100 at the oblique hole 101 to be detected;

[0109] (5) Use external testing equipment to locate the vertical positioning element 1 of the testing device;

[0110] (6) The center distance of the oblique hole 101 to be tested is obtained by fitting with Inspire software, and the position degree of the oblique hole 101 to be tested is obtained according to the theoretical position coordinates.

[0111] In this embodiment, the detection method further includes:

[0112] Repeat steps (1) to (5) above to detect multiple oblique holes 101 on the same wind turbine flange 100. Use Inspire software to fit the center distance of multiple oblique holes 101 to be detected respectively, and obtain the position degree of multiple oblique holes 101 to be detected according to the theoretical position coordinates.

[0113] The theoretical standard positional tolerance and center distance required by the drawings are input using Inspire software to obtain the inspection report.

[0114] The detection method exemplified in this embodiment, through the cooperation of the detection device and the detection workbench, can detect the center distance and position of the oblique holes to be tested on the wind turbine flange in areas with poor levelness, which greatly improves the flexibility of detection and reduces the detection cost.

[0115] For any parts not mentioned in this invention, existing technologies can be used or referenced.

[0116] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0117] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0118] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0119] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0120] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "to," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0121] The foregoing disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described above. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

Claims

1. A testing device for measuring the center distance and positional accuracy of inclined holes on a wind turbine flange, characterized in that, include: An insertion element, which is cylindrical, has a cross-sectional diameter whose circumscribed circle diameter is the same as the diameter of the oblique hole to be detected, and is used to insert the insertion element into the oblique hole to be detected. A horizontal positioning element is disposed on the upper part of the insertion element. A horizontal positioning surface is provided on the side of the horizontal positioning element near the insertion element. The horizontal positioning surface is used to fit the wind turbine flange plane at the oblique hole to be tested. A vertical positioning element is disposed above the horizontal positioning element. The centerline of the vertical positioning element and the centerline of the insertion element form an angle, the angle of which is the same as the inclination angle of the oblique hole to be inspected. The vertical positioning element is used in conjunction with external inspection equipment to inspect the center distance and / or positional accuracy of the oblique hole to be inspected. The detection device includes a series of insertion elements with different tilt angles, the insertion elements being detachably connected to the horizontal positioning element; The insertion element is movably disposed at the lower part of the horizontal positioning element. The insertion element can swing along the center line of the horizontal positioning element. The insertion element is inserted into the oblique hole to be tested. The horizontal positioning element is adjusted so that the horizontal positioning surface of the horizontal positioning element is in contact with the wind turbine flange plane at the oblique hole to be tested. The horizontal positioning element has an arc-shaped protrusion on the side near the insertion element, and a first toothed portion is provided on the arc-shaped protrusion. The upper part of the insertion element has an arc-shaped groove that matches the arc-shaped protrusion, and a second toothed portion is provided in the arc-shaped groove. The first toothed portion and the second toothed portion cooperate to enable the insertion element to swing along the center line of the horizontal positioning element. Alternatively, a pair of ear plates may be provided on the side of the horizontal positioning element near the insertion element, and a connecting rod may be provided between the ear plates. The upper part of the insertion element may be provided with a through hole, through which the connecting rod can pass to movably connect the horizontal positioning element and the insertion element.

2. The detection device for measuring the center distance and positional accuracy of inclined holes on a wind turbine flange according to claim 1, characterized in that: A blind hole is provided at the center of the bottom of the insertion element; and / or The bottom outer edge of the insertion element is chamfered.

3. The detection device for measuring the center distance and positional accuracy of inclined holes on a wind turbine flange according to claim 1, characterized in that: The surface roughness of the insertion element is Ra1 to 2, and the cylindricity of the insertion element is 0.05 to 0.15 mm; and / or The surface roughness of the horizontal positioning surface of the horizontal positioning element is Ra0.8, and the parallelism of the horizontal positioning surface is 0.05~0.15mm; and / or The cylindricity of the vertical positioning element is 0.05 to 0.15 mm.

4. A detection system for measuring the center distance and positional accuracy of inclined holes on a wind turbine flange, characterized in that, The device and testing workbench for measuring the center distance and position of inclined holes on a wind turbine flange, as described in any one of claims 1-3, wherein the testing workbench comprises: The workbench body has a loading surface on its upper part, which is used to support the wind turbine flange with the inclined hole to be tested. A level detection element is disposed on the worktable body to detect and display the levelness of the worktable body; A leveling element is detachably mounted on the worktable body for adjusting the levelness of the worktable body. Mounting components are located at the center of the workbench body for detachably mounting external testing equipment.

5. The detection system for measuring the center distance and positional accuracy of inclined holes on a wind turbine flange according to claim 4, characterized in that, The testing workbench also includes: A rotary drive device, which can be connected to an external detection device to drive the external detection device to rotate.

6. A method for measuring the center distance and positional accuracy of inclined holes on a wind turbine flange, characterized in that, The detection method using the detection device for measuring the center distance and position of inclined holes on a wind turbine flange as described in any one of claims 1-3 includes the following steps: (1) Place the wind turbine flange with the oblique hole to be tested on the loading plane of the testing workbench; (2) Connect the external testing equipment to the mounting components of the testing workbench; (3) Insert the insertion element of the detection device into the oblique hole to be detected; (4) Fit the horizontal positioning surface of the horizontal positioning element of the detection device with the plane of the wind turbine flange at the oblique hole to be detected; (5) Use external testing equipment to locate the vertical positioning element of the testing device; (6) The center distance of the oblique hole to be tested is obtained by fitting with Inspire software, and the position degree of the oblique hole to be tested is obtained according to the theoretical position coordinates.

7. The method for measuring the center distance and positional accuracy of inclined holes on a wind turbine flange according to claim 6, characterized in that, The detection method further includes: Repeat steps (1) to (5) above to detect multiple oblique holes on the same wind turbine flange. Use Inspire software to fit the center distance of the multiple oblique holes to be detected, and obtain the position degree of the multiple oblique holes to be detected according to the theoretical position coordinates. The theoretical standard positional tolerance and center distance required by the drawings are input using Inspire software to obtain the inspection report.

Images