A fan blade detection device

Abstract

The utility model provides a kind of fan blade detection device, including detection block, and detection block is equipped with first detection groove and second detection groove, first detection groove and second detection groove are all set and are penetrated the upper and lower sides of detection block, first detection groove and second detection groove are all circular arc structure, and the inner diameter and outer diameter of first detection groove and second detection groove are equal. It inserts blade into detection groove to detect, detects whether the arc surface of blade exists uneven defect, and detects whether the main part and connecting part of blade maintain coaxial.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a wind turbine blade testing device. Background Technology

[0002] A cross-flow wind turbine includes two end plates on both sides and several blades disposed between the two end plates. For example, the cross-flow wind turbine disclosed in patent application number CN202410708426.6 has two ends of the blades connected to the end plates.

[0003] refer to Figure 1 As shown, the blades of a cross-flow wind turbine include an integral main body 01 and connecting parts 02 at both ends. Both the main body 01 and the connecting parts 02 are arc-shaped structures and are coaxially arranged.

[0004] The fan blades are made by stamping metal sheets. The manufactured fan blades need to have their main body 01 and connecting part 02 arc surfaces inspected, and their coaxiality needs to be inspected. How to quickly inspect the fan blades is a technical problem that needs to be solved. Utility Model Content

[0005] In view of the problems pointed out in the background art, this utility model proposes a wind turbine blade detection device to solve the above-mentioned technical problems.

[0006] The technical solution of this utility model is implemented as follows: A wind turbine blade testing device includes a testing block with a first testing groove and a second testing groove on the testing block. The first testing groove and the second testing groove are both arranged through the upper and lower sides of the testing block. The first testing groove and the second testing groove are both arc-shaped structures, and the inner diameter and outer diameter of the first testing groove and the second testing groove are equal.

[0007] The present invention is further configured such that the length of the first detection groove is greater than the length of the second detection groove.

[0008] The present invention is further configured to include a bracket, on which the detection block is mounted and its position can be adjusted in the vertical direction.

[0009] The present invention is further configured such that the four corners of the detection block are respectively provided with connecting holes penetrating its upper and lower sides, the bracket includes four screws connected to the connecting holes, the lower end of the screws is fixedly connected to the base, and two nuts are threadedly connected to the screws, the two nuts being located on the upper and lower sides of the detection block respectively.

[0010] The present invention is further provided that the base is provided with fixing holes that penetrate through its upper and lower sides.

[0011] The present invention is further configured such that the detection block has a rectangular structure.

[0012] The present invention is further provided that one side of the first detection groove and the second detection groove in the width direction is provided with a chamfer.

[0013] The present invention is further configured such that the width of the first detection groove and the second detection groove is 0.45-1.2mm.

[0014] The present invention is further configured such that the lower end of the screw is threadedly connected to the base.

[0015] The present invention is further configured such that the thickness of the detection block in the vertical direction is 2-7cm.

[0016] By adopting the above technical solution, the beneficial effects of this utility model are as follows: The wind turbine blade testing device provided by this utility model inserts the blade into the testing groove for testing, and detects whether there are uneven defects on the arc surface of the blade, and whether the main body part 01 and the connecting part 02 of the blade are coaxial. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of an existing wind turbine blade. Figure 2 This is a schematic diagram of the structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the detection block of this utility model.

[0020] Figure 4 This is a cross-sectional view of the detection block of this utility model.

[0021] Figure 5 This is a cross-sectional view of the detection device of this utility model.

[0022] The following are the labels in the attached diagram: Main body 01, connecting part 02, detection block 1, first detection groove 2, second detection groove 3, connecting hole 4, screw 5, nut 6, fixing hole 7, chamfer 8, base 9. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] For reference as follows Figures 1-5 The present invention will be described as follows: Example: The fan blade is a long strip-shaped structure, which includes an integral main body 01 and connecting parts 02 at both ends. Both the main body 01 and the connecting parts 02 are arc-shaped structures and are coaxially arranged. The width of the connecting parts 02 is smaller than the width of the main body 01.

[0025] A wind turbine blade inspection device includes an inspection block 1, which has a rectangular structure. The thickness of the inspection block 1 in the vertical direction is 2-7 cm. The rectangular structure ensures the stability of the inspection block 1 and facilitates the processing of functional structures such as inspection slots and connection holes.

[0026] The detection block 1 is provided with a first detection groove 2 and a second detection groove 3. Both the first detection groove 2 and the second detection groove 3 are arranged through the upper and lower sides of the detection block 1 to form a through-type groove structure. The through-type design of the first detection groove 2 allows the fan blade to be inserted from one side of the detection block 1 and exit from the other side, realizing complete through-type detection.

[0027] Both the first detection groove 2 and the second detection groove 3 are arc-shaped structures, and the inner and outer diameters of the first detection groove 2 and the second detection groove 3 are equal.

[0028] The length of the first detection slot 2 is greater than the length of the second detection slot 3.

[0029] The purpose of this size setting is to ensure that the accuracy benchmark of the arc surface of the two detection slots is consistent, and to avoid deviations in the detection results due to differences in the detection benchmark. In terms of length parameters, the length of the first detection slot 2 is greater than the length of the second detection slot 3. This length difference matches the length of the main body 01 and the connecting part 02 of the wind blade: the first detection slot 2 is used to detect the entire wind blade (main body 01 + connecting part 02), and it needs to have sufficient length to accommodate the full size of the wind blade; the second detection slot 3 is only used to detect the connecting part 02, and its length only needs to meet the detection requirements of the connecting part 02.

[0030] The second inspection slot 3 is used to inspect the connecting part 02. During inspection, the connecting part 02 is inserted into the second inspection slot 3. If the connecting part 02 can be inserted smoothly, it proves that the arc surface of the connecting part 02 is qualified and there are no uneven defects. If the connecting part 02 encounters resistance when inserted, it proves that the arc surface of the connecting part 02 is unqualified and has uneven defects.

[0031] First, the connecting part 02 is inspected, and then the main body part 01 is inspected.

[0032] After completing the inspection of the connecting part 02, the fan blade is inserted into the first inspection slot 2 for further inspection. The connecting part 02 is inserted into the first inspection slot 2 first, followed by the main body 01. If the main body 01 can be inserted smoothly, it proves that the arc surface of the main body 01 is qualified and has no uneven defects. If the main body 01 encounters resistance when inserted, it proves that the arc surface of the main body 01 is unqualified and has uneven defects, or that the main body 01 and the connecting part 02 cannot be kept coaxial.

[0033] If the fan blade can pass smoothly through the first inspection slot 2, it proves that the fan blade is qualified, the arc surfaces of the main body 01 and the connecting part 02 are qualified, there are no uneven defects, and the main body 01 and the connecting part 02 are coaxial.

[0034] The first detection slot 2 and the second detection slot 3 have a chamfer 8 on one side in the width direction. The chamfer 8 serves to guide the insertion of the fan blade and reduce the difficulty of alignment when inserting the fan blade.

[0035] The width of the first detection groove 2 and the second detection groove 3 is 0.45-1.2mm, corresponding to the thickness of the fan blade. This width range is strictly matched with the thickness parameter of the fan blade to ensure that the gap between the detection groove width and the fan blade thickness is within a reasonable range: if the gap is too small, unnecessary resistance will occur when a qualified fan blade is inserted, affecting the detection judgment; if the gap is too large, uneven defects of the fan blade will not be effectively detected, reducing the detection accuracy.

[0036] It also includes a bracket, on which the detection block 1 is mounted and can be adjusted in the vertical direction.

[0037] The four corners of the detection block 1 are provided with connecting holes 4 that pass through its upper and lower sides. The hole diameter is adapted to the size of the screw 5 of the subsequent support, and the inner wall of the connecting hole 4 is a smooth surface to reduce the frictional resistance when it is engaged with the screw 5, and to facilitate the up and down movement and adjustment of the detection block 1 on the screw 5.

[0038] The support includes four screws 5 connected to the connecting holes 4, forming a four-point support structure. This support structure ensures that the test block 1 is subjected to uniform force and avoids tilting during the test.

[0039] The lower end of the screw 5 is detachably connected to the base 9, and the lower end of the screw 5 is threadedly connected to the base 9.

[0040] Two nuts 6 are threaded onto the screw 5, located on the upper and lower sides of the detection block 1, respectively. The position of the detection block 1 on the screw 5 can be determined by the nuts 6.

[0041] The base 9 is the fundamental load-bearing component of the support system. Its flat design connects the entire testing device to the fixed surface. The base 9 has mounting holes 7 running through its top and bottom sides. The number of mounting holes 7 is determined by the size of the base 9 and its load-bearing requirements, and their diameter is compatible with the size of fasteners such as bolts. The base 9 can be securely connected to the desktop, workbench, or other fixed surfaces via these mounting holes 7 and fasteners such as bolts and expansion screws. This prevents a decrease in testing accuracy due to device vibration during testing and ensures the stability of the testing process.

[0042] The testing device of this application detects the flatness of the arc surface of the fan blade and the coaxiality of the main body 01 and the connecting part 02 by detecting the accuracy and dimensions of the arc surface of the testing groove. The arc surface of the testing groove is precision machined, and its inner diameter, outer diameter and coaxiality all meet the qualified standards of the fan blade. When the fan blade can be smoothly inserted into the testing groove and penetrated through it, it indicates that the relevant parameters of the fan blade meet the design requirements; if resistance is encountered during insertion, it indicates that there is a corresponding defect in the fan blade.

[0043] The inspection process adopts a step-by-step inspection method. First, the connecting part 02 of the wind turbine blade is inspected separately, and then the entire wind turbine blade (main body part 01 + connecting part 02) is inspected comprehensively. Step-by-step inspection can achieve accurate location of defects, which facilitates the subsequent rework of unqualified products.

[0044] Step 1: Inspection of Connecting Part 02. Align the connecting part 02 of the fan blade with the second inspection slot 3 and insert it. During insertion, if the connecting part 02 passes smoothly through the second inspection slot 3 without significant resistance, it proves that the flatness of the arc surface of the connecting part 02 is qualified and there are no uneven defects. If the connecting part 02 encounters resistance during insertion and cannot pass smoothly, or if there is a jamming phenomenon during insertion, it proves that the arc surface of the connecting part 02 has uneven defects, and the connecting part 02 of the fan blade does not meet the quality requirements.

[0045] Step 2: Inspection of Main Body 01 and Coaxiality. After completing the qualification inspection of the connecting part 02, a comprehensive inspection of the entire fan blade is carried out. Align the connecting part 02 of the fan blade with the first inspection slot 2 and insert it. After the connecting part 02 is fully inserted into the first inspection slot 2, continue to push the fan blade so that the main body 01 is gradually inserted into the first inspection slot 2. During the insertion process, if the main body 01 can pass through the first inspection slot 2 smoothly without obvious resistance, it proves that the flatness of the arc surface of the main body 01 is qualified and there are no defects such as unevenness. At the same time, the coaxiality of the main body 01 and the connecting part 02 meets the design requirements. If the main body 01 encounters resistance during insertion and cannot pass through smoothly, there are two possible defects: one is that the arc surface of the main body 01 has unevenness; the other is that the main body 01 and the connecting part 02 are not kept coaxial, and there is an eccentricity phenomenon.

[0046] Step 3: Overall quality assessment of the fan blade. If the fan blade can pass smoothly through the first inspection slot 2 without any jamming or resistance, it proves that the fan blade is qualified as a whole. Specific qualified items include: the flatness of the arc surface of the main body 01 is qualified, the flatness of the arc surface of the connecting part 02 is qualified, and the coaxiality of the main body 01 and the connecting part 02 is qualified, which meets the quality requirements for subsequent assembly and use.

[0047] This testing device has an adjustable vertical position for the testing block 1, which can adapt to testing needs of different heights or testing scenarios of different specifications of wind turbine blades.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wind turbine blade detection device, characterized in that: The device includes a detection block, on which a first detection groove and a second detection groove are provided. Both the first and second detection grooves extend through the upper and lower sides of the detection block. Both the first and second detection grooves are arc-shaped structures, and their inner and outer diameters are equal.

2. The wind turbine blade detection device according to claim 1, characterized in that: The length of the first detection slot is greater than the length of the second detection slot.

3. The wind turbine blade detection device according to claim 1, characterized in that: It also includes a bracket, on which the detection block is mounted and its position can be adjusted in the vertical direction.

4. The wind turbine blade detection device according to claim 3, characterized in that: The detection block has connecting holes at its four corners, which pass through its upper and lower sides. The bracket includes four screws that connect to the connecting holes. The lower end of the screws is fixedly connected to the base. Two nuts are threaded onto the screws, and the two nuts are located on the upper and lower sides of the detection block, respectively.

5. The wind turbine blade detection device according to claim 4, characterized in that: The base is provided with fixing holes that extend through its upper and lower sides.

6. The wind turbine blade detection device according to claim 1, characterized in that: The detection block has a rectangular structure.

7. The wind turbine blade detection device according to claim 1, characterized in that: The first and second detection slots have a chamfer on one side in the width direction.

8. The wind turbine blade detection device according to claim 1, characterized in that: The width of the first and second detection slots is 0.45-1.2 mm.

9. A wind turbine blade detection device according to claim 4, characterized in that: The lower end of the screw is threadedly connected to the base.

10. A wind turbine blade detection device according to claim 1, characterized in that: The thickness of the detection block in the vertical direction is 2-7cm.

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