Wind power blade joint gap detection sensor

Abstract

The utility model discloses a wind power blade joint gap detection sensor, which comprises a detection module and a signal transmission module, the detection module comprises a sensor main body, a Hall element, a magnet sheet and a pagoda spring, the sensor main body is uniformly provided with a plurality of first mounting holes, and the sensor main body is provided with a plurality of second mounting holes. The sensor body is provided with a first mounting hole, the magnet sheet is arranged at the lower end of the first mounting hole, the pagoda spring is arranged at the upper end of the magnet sheet, the Hall element is arranged at the upper end of the pagoda spring, the signal output module comprises a main processor and a wireless transmission module, the wireless transmission module is arranged on the sensor body, and the wireless transmission module is connected with the main processor. The Hall element is electrically connected with the wireless transmission module and establishes communication connection with the wireless transmission module, and the wireless transmission module establishes wireless communication connection with the main processor. According to the wind power blade joint gap detection sensor provided by the utility model, the working intensity can be reduced, the detection result can be ensured to be more accurate, and the efficiency is higher.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine blade mold measurement, specifically relating to a wind turbine blade joint gap detection sensor. Background Technology

[0002] Wind turbine blade molds are used to form wind turbine blades. Existing methods for measuring mold closing clearance in wind turbine blade molds typically involve placing soft materials such as clay into the mold closing gap during production and debugging. After pre-pressing the mold and then opening it, the thickness of the clay is measured to determine the clearance dimensions at each closing position. This existing method generally requires repeated mold closing measurements and adjustments to achieve a uniform clearance, making the process cumbersome. Furthermore, the softness of the clay can easily lead to inaccurate measurements. Moreover, as wind turbine units continue to grow larger, the size of wind turbine blades is gradually increasing, making the flipping and closing of large blade molds increasingly difficult and time-consuming, further increasing the difficulty of current mold closing clearance measurement methods. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a wind turbine blade joint gap detection sensor.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A wind turbine blade joint gap detection sensor includes a detection module and a signal transmission module. The detection module includes a sensor body, a Hall element, a magnetic sheet, and a pagoda spring. The sensor body has a plurality of first mounting holes evenly distributed on it. The magnetic sheet is disposed at the lower end of the first mounting holes, the pagoda spring is disposed at the upper end of the magnetic sheet, and the Hall element is disposed at the upper end of the pagoda spring. The signal transmission module includes a main processor and a wireless transmission module. The wireless transmission module is disposed on the sensor body. The Hall element is electrically connected to the wireless transmission module and establishes a communication connection. The wireless transmission module establishes a wireless communication connection with the main processor.

[0006] Furthermore, the thickness of the sensor body is 2mm, the thickness of the magnet sheet is no more than 1mm, and the thickness of the Hall element is no more than 1mm.

[0007] Furthermore, the width of the sensor body is 80-150mm.

[0008] Furthermore, the thickness of the wireless transmission module is no more than 2mm, and the Hall element is connected to the wireless transmission module via a metal wire.

[0009] Furthermore, the wire diameter of the pagoda spring is no greater than 1 mm, and the height of the pagoda spring is no less than 9 mm.

[0010] Furthermore, the first mounting holes are arranged in a matrix, and the spacing between the first mounting holes is no greater than 50mm.

[0011] Furthermore, the wire diameter of the pagoda spring is no greater than 1 mm.

[0012] Furthermore, the sensor body is made of a flexible substrate.

[0013] The wind turbine blade joint gap detection sensor disclosed in this utility model has the following advantages compared with the prior art: it eliminates the need to repeatedly apply clay to the wind turbine blade and continuously measure the thickness of the clay. Instead, it directly calculates the gap in one go through the main processor and can accurately mark the position where the joint gap exceeds 10mm. This allows for accurate and rapid location of the corresponding position, saving more workload, reducing labor intensity, and ensuring more accurate detection results with higher efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the detection module of a preferred embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of the pagoda spring according to a preferred embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of the first mounting hole in a preferred embodiment of the present invention.

[0017] Figure 4 This is a block diagram illustrating the detection principle of a preferred embodiment of this utility model.

[0018] The reference numerals in the accompanying drawings include: 100, sensor body; 110, wireless transmission module; 111, amplifier circuit; 112, conversion circuit; 113, wireless circuit; 120, magnet sheet; 130, pagoda spring; 140, Hall element; 150, first mounting hole; 160, main processor. Detailed Implementation

[0019] This utility model discloses a sensor and detection method for detecting the joint gap of wind turbine blades. The specific implementation of this utility model will be further described below with reference to preferred embodiments.

[0020] See attached diagram. Figure 1-4 , Figure 1 This is a schematic diagram of the detection module according to a preferred embodiment of the present invention. Figure 2This is a schematic diagram of the structure of the pagoda spring 130 according to a preferred embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of the first mounting hole 150 in a preferred embodiment of the present invention. Figure 4 This is a block diagram illustrating the detection principle of a preferred embodiment of this utility model.

[0021] Preferred embodiment.

[0022] This embodiment provides a wind turbine blade joint gap detection sensor, including a detection module and a signal transmission module. The detection module includes a sensor body 100, a Hall element 140, a magnetic sheet 120, and a pagoda spring 130. The sensor body 100 is uniformly provided with a plurality of first mounting holes 150. The magnetic sheet 120 is disposed at the lower end of the first mounting holes 150, the pagoda spring 130 is disposed at the upper end of the magnetic sheet 120, and the Hall element 140 is disposed at the upper end of the pagoda spring 130. The signal transmission module includes a main processor 160 and a wireless transmission module 110. The wireless transmission module 110 is disposed on the sensor body 100. The Hall element 140 is electrically connected to the wireless transmission module 110 and establishes a communication connection. The wireless transmission module 110 establishes a wireless communication connection with the main processor 160.

[0023] Furthermore, the thickness of the sensor body 100 is 2mm, the thickness of the magnet sheet 120 is no more than 1mm, and the thickness of the Hall element 140 is no more than 1mm.

[0024] Furthermore, the width of the sensor body 100 is 80-150mm.

[0025] Furthermore, the thickness of the wireless transmission module 110 is no more than 2mm, and the Hall element 140 is connected to the wireless transmission module 110 via a metal wire.

[0026] Furthermore, the wire diameter of the pagoda spring 130 is no greater than 1 mm, and the height of the pagoda spring 130 is no less than 9 mm.

[0027] Furthermore, the first mounting holes 150 are arranged in a matrix, and the spacing between the first mounting holes 150 is no greater than 50mm.

[0028] Furthermore, the wire diameter of the pagoda spring 130 is no greater than 1 mm.

[0029] Furthermore, the sensor body 100 is made of a flexible substrate.

[0030] A method for detecting the joint gap of wind turbine blades includes the following steps:

[0031] Step S1: First, prepare the upper and lower molds of the wind turbine blade in place, roll up the sensor body 100 and lay it flat on the lower mold of the wind turbine blade, flip the upper mold of the wind turbine blade onto the upper mold of the wind turbine blade, and align the sensor body 100 with the joint between the upper and lower molds of the wind turbine blade.

[0032] Step S2: The upper mold of the wind turbine blade presses down on the Hall element 140 and moves it downward. The pagoda spring 130 is compressed, and the distance between the Hall element 140 and the magnetic sheet 120 decreases. The distance between the Hall element 140 and the magnetic sheet 120 is calculated based on the signal output by the Hall element 140 and transmitted to the main processor 160 through the wireless transmission module 110.

[0033] Step S3: By monitoring data through the main processor 160, the signal of each Hall element 140 is obtained, the joint distance of each Hall element 140 at the corresponding position is calculated, and the corresponding markings are made for joint distances exceeding 10mm.

[0034] Working principle: After the detection module is formed, the sensor body 100 can be rolled up. When it is necessary to detect the mold gap between the upper and lower molds of the wind turbine blade, the sensor body 100 is directly unfolded and laid flat at the mold gap of the lower mold of the wind turbine blade. Then, the upper mold of the wind turbine blade is flipped so that the upper and lower molds of the wind turbine blade are joined together. When the upper and lower molds of the wind turbine blade are joined together, the Hall element 140 is squeezed, causing the pagoda spring 130 to be compressed. That is, the distance between the Hall element 140 and the magnetic sheet 120 changes, and the detection result of the Hall element 140 changes. The signal is acquired and amplified by the wireless transmission module 110, and then the main processor 160 can calculate and convert the distance between the Hall element 140 and the magnetic sheet 120. The specific gap size of the mold gap between the upper and lower molds of the wind turbine blade can be obtained. The location where the gap exceeds 10mm is marked and can be directly checked, which is more convenient.

[0035] When fully compressed, the pagoda spring 130 can be compressed into a single plane, ensuring that the Hall element 140 can be compressed into the first mounting hole 150, and thus ensuring a minimum gap of 2mm between the upper and lower molds of the wind turbine blade. It is worth noting that the required mold gap between the upper and lower molds of the wind turbine blade is 6±4mm, meaning a gap between 2-10mm is reasonable. Therefore, the height of the pagoda spring 130, when not compressed, is not less than 9mm, enabling it to detect when the mold gap between the upper and lower molds of the wind turbine blade is not less than 10mm, thus facilitating repair marking.

[0036] The wireless transmission module 110 includes an amplification circuit 111, a conversion circuit 112, and a wireless circuit 113. The amplification circuit 111 collects and amplifies the signal from the Hall element 140, converts it into a digital signal through the conversion circuit 112, and transmits it to the main processor 160 through the wireless circuit 113. The main processor 160 receives the signal, calculates the mold gap size at each Hall element 140, marks the positions where the mold gap is greater than 10mm, and inspects and repairs them, thus allowing for the next step of mold closing processing. In this process, it is unnecessary to repeatedly apply clay to the wind turbine blades, and it is unnecessary to constantly measure the thickness of the clay (measuring thickness requires at least three test points within 10cm, resulting in a huge workload). Instead, the main processor 160 directly calculates the thickness in one go, accurately marking the positions where the mold gap exceeds 10mm, thus quickly and accurately locating the corresponding positions. This saves more workload, reduces labor intensity, and ensures more accurate and efficient detection results.

[0037] It is worth mentioning that the technical features such as the Hall element 140 involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control methods and spatial arrangement of these technical features can be adopted by conventional choices in the field, and should not be regarded as the utility model point of this utility model patent. This utility model patent will not be further elaborated in detail.

[0038] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wind turbine blade joint gap detection sensor, characterized in that, The system includes a detection module and a signal transmission module. The detection module includes a sensor body (100), a Hall element (140), a magnetic sheet (120), and a pagoda spring (130). The sensor body (100) is provided with a plurality of first mounting holes (150) evenly. The magnetic sheet (120) is disposed at the lower end of the first mounting hole (150). The pagoda spring (130) is disposed at the upper end of the magnetic sheet (120). The Hall element (140) is disposed at the upper end of the pagoda spring (130). The signal transmission module includes a main processor (160) and a wireless transmission module (110). The wireless transmission module (110) is disposed on the sensor body (100). The Hall element (140) is electrically connected to the wireless transmission module (110) and establishes a communication connection. The wireless transmission module (110) establishes a wireless communication connection with the main processor (160).

2. The wind turbine blade joint gap detection sensor according to claim 1, characterized in that, The thickness of the sensor body (100) is 2mm, the thickness of the magnet sheet (120) is no more than 1mm, and the thickness of the Hall element (140) is no more than 1mm.

3. The wind turbine blade joint gap detection sensor according to claim 1, characterized in that, The width of the sensor body (100) is 80-150mm.

4. The wind turbine blade joint gap detection sensor according to claim 1, characterized in that, The thickness of the wireless transmission module (110) is no more than 2 mm, and the Hall element (140) is connected to the wireless transmission module (110) through a metal wire.

5. The wind turbine blade joint gap detection sensor according to claim 1, characterized in that, The wire diameter of the pagoda spring (130) is not greater than 1 mm, and the height of the pagoda spring (130) is not less than 9 mm.

6. The wind turbine blade joint gap detection sensor according to claim 1, characterized in that, The first mounting holes (150) are arranged in a matrix, and the spacing between the first mounting holes (150) is no more than 50mm.

7. The wind turbine blade joint gap detection sensor according to claim 1, characterized in that, The wire diameter of the pagoda spring (130) is no greater than 1 mm.

8. The wind turbine blade joint gap detection sensor according to claim 1, characterized in that, The sensor body (100) is made of a flexible substrate.

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