Deformation measuring device of wind power blade structure test bench

Abstract

The utility model discloses a deformation measuring device of a wind power blade structure test bench, which comprises a supporting part, a moving part and a measuring part, the deformation quantity of the test bench can be measured only by adjusting the position of the measuring part to a measuring position through the moving part, and then the displacement compensation value of a wind power blade measuring point can be calculated based on the deformation quantity. And the test accuracy of the full-size static test of the super-long blade can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of wind power equipment testing, and in particular to a deformation measurement device for a wind power blade structure test bench. Background Art

[0002] Wind turbine blades are the blades of wind turbine generators. Full-scale static testing of wind turbine blades is a required test item during the reliability verification stage of blade design and manufacturing. During the blade testing process, displacement measurements of each measuring point of the blade are obtained through measuring instruments such as displacement sensors or total stations.

[0003] However, the displacement measurement value does not only include the deformation of the wind turbine blade. The deformation of the test bench is one of the important reasons for the measurement error. How to offset the error introduced by the deformation of the test bench is one of the keys to improving the test accuracy. Nowadays, with the large-scale wind turbine blades, the test load is larger than before, and the test party generally chooses to ignore the error introduced by this part of the deformation, or roughly estimates the deformation, resulting in low accuracy of wind turbine blade structure testing. Utility Model Content

[0004] An embodiment of the present application provides a deformation measurement device for a wind turbine blade structure test bench, including a supporting part, a moving part and a measuring part. The position of the measuring part is adjusted to a measuring position by the moving part to determine the deformation amount of the test bench, so as to improve the accuracy of the wind turbine blade structure test.

[0005] The deformation measuring device of the wind turbine blade structure test bench comprises a supporting part, a moving part and a measuring part; a track is arranged on the supporting part for supporting the moving part and the measuring part, and the track is used to provide a moving path for the moving part; one end of the moving part is movably connected to the track, and the other end of the moving part is fixedly connected to the measuring part, so as to enable the measuring part to move along the track to a measuring position; the measuring part contacts the test bench when in the measuring position, so as to measure the deformation amount generated by the test bench during the wind turbine blade structure test, wherein the wind turbine blade structure test is performed by fixing the wind turbine blade to be tested on the test bench.

[0006] In some embodiments, the moving part includes a connecting rod and a sliding wheel, one end of the moving part is movably connected to the track through the sliding wheel, and the other end of the moving part is fixedly connected to the measuring part through one end of the connecting rod, and the other end of the connecting rod is connected to the rotating shaft of the sliding wheel.

[0007] In some embodiments, a ruler is provided in the track, and a pointer cooperating with the ruler is provided on the rotating shaft of the sliding wheel to indicate the moving distance of the measuring part, wherein the wind turbine blade structure test is performed after the blade root of the wind turbine blade to be tested is fixed on the test bench. When performing the wind turbine blade structure test, the support part is set in the first position so that the zero position of the ruler is opposite to the center of the blade root.

[0008] In some embodiments, the connecting rod includes a plurality of telescopic sleeves, and each of the telescopic sleeves can change the length of the connecting rod when the telescopic amount is changed.

[0009] In some embodiments, the measuring part includes a support rod and a dial indicator, the support rod includes a rod part, a first end close to the support part, and a second end away from the support part, the other end of the movable part is fixedly connected to the rod part to achieve fixed connection to the measuring part, the dial indicator is fixedly connected to the second end, and the measuring part contacts the test bench through the dial indicator when in the measuring position.

[0010] In some embodiments, the rod portion includes a first portion having the first end portion and a second portion having the second end portion, the first portion is a solid structure or is filled with a preset weight, and the second portion is a hollow structure or a hollow structure.

[0011] In some embodiments, the measuring portion further includes a universal wheel, which is installed at the first end portion and contacts the supporting portion.

[0012] In some embodiments, the measuring part further includes a mounting seat, the mounting seat is fixedly connected to the second end, and the dial indicator is fixedly connected to the second end by being fixedly connected to the mounting seat.

[0013] In some embodiments, the test bench fixes the wind turbine blade to be tested via an adapter flange of the wind turbine blade to be tested, and the measuring part contacts the test bench by contacting the adapter flange when in the measuring position.

[0014] In some embodiments, a counterweight space for placing a counterweight object is provided in the support portion.

[0015] The deformation measurement device of the wind turbine blade structure test bench of the embodiment of the present application includes a supporting part, a moving part and a measuring part. The deformation amount of the test bench can be measured only by adjusting the position of the measuring part to the measuring position through the moving part. Subsequently, the displacement compensation value of the wind turbine blade measuring point can be calculated based on the deformation amount, which can effectively improve the test accuracy of the full-scale static test of ultra-long blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 A schematic diagram of the configuration of a deformation measurement device and a test bench for testing a wind turbine blade structure according to an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the overall structure of a deformation measurement device of a wind turbine blade structure test bench according to an embodiment of the present application;

[0019] Figure 3 The partial structure diagram of the deformation measurement device of the wind turbine blade structure test bench of the embodiment of the present application is shown in FIG. Figure 1 ;

[0020] Figure 4 The partial structure diagram of the deformation measurement device of the wind turbine blade structure test bench of the embodiment of the present application is shown in FIG. Figure 2 ;

[0021] Figure 5 The partial structure diagram of the deformation measurement device of the wind turbine blade structure test bench of the embodiment of the present application is shown in FIG. Figure 3 ;

[0022] Figure 6 This is a schematic diagram of the principle of determining the compensation displacement according to an embodiment of the present application.

[0023] Figure 1-Figure 5 In the figure, 100, deformation measuring device of wind turbine blade structure test bench; 110, supporting part; 111, track; 1111, ruler; 112, counterweight space; 120, moving part; 121, connecting rod; 122, sliding wheel; 123, pointer; 130, measuring part; 131, supporting rod; 132, dial indicator; 133, mounting seat; 134, universal wheel; 200, test bench; 210, adapter flange. DETAILED DESCRIPTION

[0024] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0025] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.

[0026] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0027] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0028] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art will be able to readily implement many other equivalent forms of the present application.

[0029] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0030] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present application. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0031] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.

[0032] A deformation measurement device for a wind turbine blade structure test bench in an embodiment of the present application includes a support portion, a moving portion, and a measuring portion. The deformation of the test bench can be measured by adjusting the position of the measuring portion to the measuring position by the moving portion, and the displacement compensation value of the wind turbine blade measuring point can be calculated based on the deformation. The deformation measurement device of the present application is suitable for all static tests of wind turbine blades using the side-pull method, and can quickly and accurately provide compensation for the blade displacement measurement of the corresponding test, and can effectively improve the test accuracy of full-size static tests of ultra-long blades.

[0033] like Figure 1-Figure 5 As shown, the deformation measuring device 100 of the wind turbine blade structure test bench includes a supporting part 110, a moving part 120 and a measuring part 130;

[0034] The support part 110 is provided with a track 111 for supporting the moving part 120 and the measuring part 130 , and the track 111 is used to provide a moving path for the moving part 120 ;

[0035] One end of the moving part 120 is movably connected to the track 111, and the other end of the moving part 120 is fixedly connected to the measuring part 130, so as to enable the measuring part 130 to move along the track 111 to a measuring position;

[0036] The measuring part 130 contacts the test bench 200 when in the measuring position, and is used to measure the deformation of the test bench 200 during the wind turbine blade structure test, wherein the wind turbine blade structure test is performed after the wind turbine blade to be tested is fixed on the test bench 200.

[0037] In this embodiment, the measuring part 130 is moved to the measuring position along the track 111 in the supporting part 110 by the moving part 120. The measuring part 130 is in contact with the test bench 200 when in the measuring position. During the wind turbine blade structure test, the measuring part 130 can measure the deformation of the test bench 200, thereby realizing a fast and accurate determination of the deformation of the test bench 200. Subsequently, compensation can be provided for the displacement measurement of the wind turbine blade based on the deformation, thereby improving the accuracy of the full-size static test of the wind turbine blade.

[0038] In some embodiments of the present application, the moving part 120 includes a connecting rod 121 and a sliding wheel 122. One end of the moving part 120 is movably connected to the track 111 through the sliding wheel 122, and the other end of the moving part 120 is fixedly connected to the measuring part 130 through one end of the connecting rod 121. The other end of the connecting rod 121 is connected to the rotating shaft of the sliding wheel 122.

[0039] In this embodiment, when the sliding wheel 122 moves on the track 111 , it can drive the measuring unit 130 to move, so that the measuring unit 130 can accurately reach different measuring positions.

[0040] Optionally, the sliding wheel 122 and the track 111 may be in sliding contact or gear meshing contact, and there may be one or more sliding wheels 122.

[0041] Optionally, as an alternative, the moving part 120 may also only include the sliding wheel 122, and the rotating shaft of the sliding wheel 122 is directly fixedly connected to the measuring part 130, or the connecting rod 121 and the measuring part 130 are set as an integrated structure.

[0042] In some embodiments of the present application, a scale 1111 is provided in the track 111, and a pointer 123 cooperating with the scale 1111 is provided on the rotating shaft of the sliding wheel 122 to indicate the moving distance of the measuring unit 130, wherein the wind turbine blade structure test is performed after the blade root of the wind turbine blade to be tested is fixed on the test bench 200. When performing the wind turbine blade structure test, the support unit 110 is set in the first position so that the zero position of the scale 1111 is opposite to the center of the blade root.

[0043] In this embodiment, by providing a scale 1111 in the track 111 and a pointer 123 on the sliding wheel 122 , the moving distance of the measuring part 130 can be intuitively determined.

[0044] Optionally, in addition to using the ruler 1111 and the pointer 123 to determine the moving distance, as an alternative, a displacement sensor can be set on the track 111 or the sliding wheel 122 to measure the moving distance.

[0045] In some embodiments of the present application, the connecting rod 121 includes a plurality of retractable sleeves, and each retractable sleeve can change the length of the connecting rod 121 when changing the amount of retraction.

[0046] By providing a retractable sleeve, the length of the connecting rod 121 can be flexibly set, so that the measuring part 130 can measure different measuring positions more flexibly.

[0047] In some embodiments of the present application, the measuring part 130 includes a support rod 131 and a dial indicator 132, the support rod 131 includes a rod portion, a first end close to the support portion 110, and a second end away from the support portion 110, the other end of the movable part 120 is fixedly connected to the rod portion to achieve a fixed connection to the measuring part 130, the dial indicator 132 is fixedly connected to the second end, and the measuring part 130 is in contact with the test bench 200 through the dial indicator 132 when in the measuring position.

[0048] In this embodiment, the dial gauge 132 is in contact with the test bench 200 and can measure the deformation of the test bench 200 .

[0049] Optionally, other meters may be used instead of the dial indicator 132 according to different measurement accuracies, such as a micrometer, a laser centering instrument, etc.

[0050] In some embodiments of the present application, the rod includes a first part having a first end and a second part having a second end, the first part is a solid structure or is filled with a preset weight, and the second part is a hollow structure or a hollow structure.

[0051] In this embodiment, by setting the first part as a solid structure or filling it with preset weights and setting the second part as a hollow structure or a hollow structure, the center of gravity of the pole can be lowered, thereby improving the stability of the pole.

[0052] Optionally, a material with a higher density, such as metal, may be used at the first end, and a material with a lower density, such as wood, hard plastic, etc., may be used at the second end.

[0053] In some embodiments of the present application, the measuring portion 130 further includes a universal wheel 134 , which is installed at the first end portion and contacts the supporting portion 110 .

[0054] By providing the universal wheel 134 , the friction between the rod and the support part 110 can be reduced, so that the measuring part 130 can be moved more flexibly.

[0055] In some embodiments of the present application, the measuring portion 130 further includes a mounting seat 133 , and the mounting seat 133 is fixedly connected to the second end portion. The dial indicator 132 is fixedly connected to the mounting seat 133 to achieve fixed connection to the second end portion.

[0056] In this embodiment, by providing the mounting seat 133, the stability of the dial indicator 132 is improved, thereby improving the measurement accuracy.

[0057] In some embodiments of the present application, the test bench 200 fixes the wind turbine blade to be tested via the adapter flange 210 of the wind turbine blade to be tested, and the measuring part 130 is in contact with the test bench 200 by contacting the adapter flange 210 when in the measuring position.

[0058] In this embodiment, since the wind turbine blade to be tested is installed on the test bench 200 through the adapter flange 210, the deformation on the adapter flange 210 can accurately reflect the deformation of the test bench 200. Therefore, by contacting the measuring part 130 with the adapter flange 210 for measurement, the deformation amount of the test bench 200 can be accurately determined.

[0059] Optionally, according to different test items, the measuring part 130 may be contacted with different positions of the adapter flange 210 to measure the deformation amount. For example, when a horizontal force is applied to the wind turbine blade for testing, the measuring position may be set on the left or right side of the adapter flange 210. When a vertical force is applied to the wind turbine blade for testing, the measuring position may be set on the upper side or the lower side of the adapter flange 210.

[0060] In some embodiments of the present application, a weight space 112 for placing a weight object is provided in the support portion 110 .

[0061] In this embodiment, a counterweight object may be placed in the counterweight space 112 to further improve the stability of the support portion 110 .

[0062] Optionally, the counterweight object may be a stone, a metal block, etc.

[0063] The following combination Figure 1-Figure 5 , the measurement principle of the deformation measurement device 100 of the wind turbine blade structure test bench according to the embodiment of the present application is explained.

[0064] Looking from the blade root to the blade tip, for the static test with tension applied to the left, the deformation measuring device 100 of the wind turbine blade structure test bench can be installed on the right side of the test bench 200, such as Figure 1As shown. When in use, the support portion 110 is set in the first position so that the zero position of the scale 1111 is opposite to the center of the blade root. First, install the dial indicator 132 on the mounting seat 133, and then move the support rod 131 to make the dial indicator 132 contact with the adapter flange 210 of the wind turbine blade to be tested. During the wind turbine blade test, the reading of the dial indicator 132 and the indication value of the pointer 123 on the scale 1111 are recorded, and the measurement of the deformation amount is completed. Subsequently, the displacement compensation amount of the blade measuring point can be quickly and accurately determined by the corresponding calculation method, with the help of the reading of the dial indicator 132 and the indication value of the pointer 123 on the scale 1111. A method of an embodiment of the present application is described as follows:

[0065] Assume that for a certain static loading, when the loading level is from 0% to 100%, the reading of dial gauge 132 is x1-x2, the change δx=x2-x1, the compensation displacement to be obtained for the deformation at the spanwise position a meter of the blade is δL, and the distance y from the center of the test bench 200 to the dial gauge 132 is determined by the indication value of pointer 123 on scale 1111. Figure 6 As shown, the compensation displacement δL can be calculated according to formula 1. Formula 1 is:

[0066]

[0067] In addition, although exemplary embodiments have been described herein, the scope includes any and all embodiments based on the present disclosure with equivalent elements, modifications, omissions, combinations (e.g., various embodiments intersecting schemes), adaptations or changes. The elements in the claims will be interpreted broadly based on the language adopted in the claims, and are not limited to the examples described in this specification or during the implementation of this application, and the examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0068] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, a person of ordinary skill in the art can use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be grouped together to simplify the present disclosure. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the present disclosure may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently used as a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of the present disclosure should be determined with reference to the attached claims and the full scope of equivalent forms granted by these claims.

[0069] Multiple embodiments of the present disclosure are described in detail above, but the present disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concepts of the present disclosure, and these variations and modifications should all fall within the scope of protection required by the present disclosure.

Claims

1. A deformation measurement device for a wind turbine blade structure test bench, characterized in that: It includes a supporting part, a moving part and a measuring part; The support part is provided with a track for supporting the moving part and the measuring part, and the track is used to provide a moving path for the moving part; One end of the moving part is movably connected to the track, and the other end of the moving part is fixedly connected to the measuring part, so as to enable the measuring part to move along the track to a measuring position; The measuring part contacts the test bench when in the measuring position, and is used to measure the deformation amount generated by the test bench during the wind turbine blade structure test, wherein the wind turbine blade structure test is performed after the wind turbine blade to be tested is fixed on the test bench.

2. The deformation measuring device for the wind turbine blade structure test bench according to claim 1, characterized in that: The moving part includes a connecting rod and a sliding wheel, one end of the moving part is movably connected to the track through the sliding wheel, the other end of the moving part is fixedly connected to the measuring part through one end of the connecting rod, and the other end of the connecting rod is connected to the rotating shaft of the sliding wheel.

3. The deformation measuring device for the wind turbine blade structure test bench according to claim 2, characterized in that: A ruler is arranged in the track, and a pointer cooperating with the ruler is arranged on the rotating shaft of the sliding wheel to indicate the moving distance of the measuring part, wherein the wind turbine blade structure test is performed after the blade root of the wind turbine blade to be tested is fixed on the test bench. When performing the wind turbine blade structure test, the support part is set in the first position so that the zero position of the ruler is opposite to the center of the blade root.

4. The deformation measuring device for the wind turbine blade structure test bench according to claim 2, characterized in that: The connecting rod comprises a plurality of telescopic sleeves, and each of the telescopic sleeves can change the length of the connecting rod when the telescopic amount is changed.

5. The deformation measuring device for the wind turbine blade structure test bench according to claim 1, characterized in that: The measuring part includes a support rod and a dial indicator. The support rod includes a rod part, a first end close to the support part and a second end away from the support part. The other end of the movable part is fixedly connected to the rod part to achieve fixed connection to the measuring part. The dial indicator is fixedly connected to the second end. When the measuring part is in the measuring position, it contacts the test bench through the dial indicator.

6. The deformation measuring device for the wind turbine blade structure test bench according to claim 5, characterized in that: The rod portion includes a first portion having the first end portion and a second portion having the second end portion, the first portion is a solid structure or is filled with a preset weight, and the second portion is a hollow structure or a hollow structure.

7. The deformation measuring device for the wind turbine blade structure test bench according to claim 5, characterized in that: The measuring part further includes a universal wheel installed at the first end portion and in contact with the supporting part.

8. The deformation measuring device for the wind turbine blade structure test bench according to claim 5, characterized in that: The measuring part further comprises a mounting seat, and the mounting seat is fixedly connected to the second end portion. The dial indicator is fixedly connected to the second end portion by being fixedly connected to the mounting seat.

9. The deformation measuring device for a wind turbine blade structure test bench according to claim 1, characterized in that: The test bench fixes the wind turbine blade to be tested via the adapter flange of the wind turbine blade to be tested, and the measuring part is in contact with the test bench by contacting with the adapter flange when in the measuring position.

10. The deformation measuring device for a wind turbine blade structure test bench according to claim 1, characterized in that: The support portion is provided with a counterweight space for placing a counterweight object.

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