A wind power blade surface crack detection device

Abstract

The utility model discloses a kind of wind power blade surface crack detection devices, it is related to wind power blade detection technical field.The utility model includes substrate, the upper surface of substrate is provided with detection component, detection component includes movable rack on the upper surface of substrate, the inner top of movable rack has the mounting plate of setting, the lower surface edge of mounting plate has the ultrasonic nondestructive detector of installation, the end of cable electrically connected on ultrasonic nondestructive detector has the electrically connected probe;The lower surface of mounting plate is provided with marking component.The utility model sets detection component, liberate the hands of operator, facilitate its execution other work, and set marking component, facilitate staff to find crack position on wind power blade later to repair, prevent crack repair omission.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine blade testing technology, and in particular relates to a device for detecting surface cracks in wind turbine blades. Background Technology

[0002] Wind power generation refers to the conversion of the kinetic energy of wind into mechanical energy, and then into electrical energy. Specifically, the wind turbine rotates under the influence of wind, converting the kinetic energy of the wind into the mechanical energy of the turbine shaft. The generator then rotates under the drive of the turbine shaft to generate electricity. This is an important form of wind energy utilization. Wind power generation requires wind turbine generator sets, which consist of a wind turbine rotor and a generator. The rotor contains wind turbine blades, a hub, and reinforcing components. When there are cracks on the wind turbine blades, they are prone to breakage under wind loads, affecting the normal operation and safety of the wind turbine generator set. Furthermore, it increases the vibration and noise of the blades, impacting the operating efficiency of the wind turbine generator set. Therefore, ultrasonic non-destructive testing (NDT) is needed to detect surface cracks on the manufactured wind turbine blades. However, ultrasonic NDT still has the following shortcomings in practical use: 1. When using traditional ultrasonic non-destructive testing instruments to detect surface cracks on wind turbine blades, operators need to hold the equipment in one hand and the probe in the other hand to contact the blade, and complete the test by manually moving the probe. This method not only restricts their hands, but also affects other work. 2. After the staff uses an ultrasonic non-destructive testing instrument to detect cracks on the surface of the wind turbine blade, the cracks need to be repaired. Since the area of ​​the wind turbine blade is large, there may be multiple cracks detected on the wind turbine blade. If the cracks on the surface of the wind turbine blade are not marked, it will cause inconvenience to the staff in finding the location of the cracks and increase the time spent searching for the cracks.

[0003] To address these issues, we provide a wind turbine blade surface crack detection device. Utility Model Content

[0004] The purpose of this utility model is to provide a wind turbine blade surface crack detection device. By setting up detection components, the device frees up the hands of the workers and does not hinder them from carrying out other work. Furthermore, by setting up marking components, it is easier to locate the cracks on the wind turbine blades for repair in later work, thereby solving the technical problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a device for detecting surface cracks in wind turbine blades, comprising a base plate, a detection assembly on the upper surface of the base plate, the detection assembly including a movable frame disposed on the upper surface of the base plate, a mounting plate disposed on the inner top of the movable frame, an ultrasonic non-destructive testing instrument mounted at the lower edge of the mounting plate, and a probe electrically connected to the end of a cable electrically connected to the ultrasonic non-destructive testing instrument; a marking assembly disposed on the lower surface of the mounting plate, the marking assembly including a mounting bracket mounted at the lower edge of the mounting plate, a connecting rod with a fixed protrusion at the upper end of the connecting rod penetrating the inner bottom of the mounting bracket, a return spring sleeved on the periphery of the connecting rod, the two ends of the return spring being connected to the lower surface of the protrusion and the inner bottom of the mounting bracket, and a marker pen disposed at the lower end of the connecting rod.

[0006] The present invention is further configured such that the upper surface of the substrate has symmetrically fixed guide rails, and the lower surface of the movable frame has symmetrically opened sliding grooves, the sliding grooves being slidably connected to the outside of the guide rails.

[0007] The present invention is further configured such that the guide rail is a T-shaped structure, the slide is a T-shaped groove structure, and the movable frame is an inverted U-shaped structure.

[0008] The present invention is further configured such that a threaded seat is fixedly connected to the side wall of the mounting plate, and a double-ended lead screw is threaded inside the threaded seat. The two ends of the double-ended lead screw are rotatably connected to the side wall of the movable frame. A motor is installed on the outer side wall of the movable frame, and the output end of the motor is connected to the end of the double-ended lead screw.

[0009] The present invention is further configured such that a sleeve fixed to the side wall of the mounting plate is located away from the threaded seat, and a guide shaft is provided through the sleeve, with both ends of the guide shaft connected to the side wall of the movable frame.

[0010] The present invention is further configured such that a cylinder is installed at the center of the lower surface of the mounting plate, and a connecting seat fixedly connected to the lower end of the piston rod of the cylinder extension end is connected to the side wall of the probe.

[0011] The present invention is further configured such that the mounting bracket is a U-shaped structure, the upper surface of the movable bracket has a through groove, and the upper end of the connecting rod passes through the through groove.

[0012] The present invention is further configured such that the upper part of the periphery of the marker has an external threaded sleeve, and the lower end of the connecting rod has a threaded hole, and the external threaded sleeve is threadedly connected to the lower end of the connecting rod through the threaded hole.

[0013] This utility model has the following beneficial effects: 1. This utility model, by setting up a detection component, opens the cylinder, and the piston rod at the cylinder's telescopic end extends or retracts, adjusting the height of the probe until it contacts the surface of the wind turbine blade. The ultrasonic non-destructive testing instrument is powered on, and the probe performs crack detection on the wind turbine blade. Furthermore, it eliminates the need for the operator to hold the ultrasonic non-destructive testing instrument in one hand and the probe in the other, freeing the operator's hands and allowing them to perform other tasks. When the motor is powered on, the bidirectional lead screw rotates, the mounting plate moves, and the probe's position is adjusted. Simultaneously, the movable frame can slide along the guide rail, further expanding the probe's detection range and increasing the detection quality.

[0014] 2. This utility model uses a marking component. When the protruding handle is pressed down, the reset spring is compressed, the connecting rod moves downward, and the marker moves downward accordingly. After the marker comes into contact with the wind turbine blade, it leaves a mark on the crack on the surface of the wind turbine blade, making it easier for staff to find the location of the crack on the wind turbine blade for repair later. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0016] Figure 1 A three-dimensional schematic diagram of a wind turbine blade surface crack detection device; Figure 2 This is a schematic diagram showing the connection between the detection component and the marking component; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a diagram showing the connection between the mounting plate and the marking assembly.

[0017] The attached diagram lists the components represented by each number as follows: 1-Baseboard, 101-Guide rail, 2-Detection component, 201-Moving frame, 202-Motor, 202a-Bidirectional lead screw, 203-Mounting plate, 203a-Threaded seat, 203b-Sleeve, 204-Guide shaft, 205-Ultrasonic non-destructive testing instrument, 205a-Cable, 205b-Probe, 206-Cylinder, 206a-Connecting seat, 3-Marking component, 301-Mounting frame, 302-Connecting rod, 302a-Reset spring, 302b-Protruding handle, 303-Marker pen, 303a-External threaded sleeve. Detailed Implementation

[0018] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1, please refer to Figure 1 The present invention is a wind turbine blade surface crack detection device, including a base plate 1 and a guide rail 101. The guide rail 101 is used to limit the movement trajectory of the movable frame 201, limiting the movable frame 201 to move in a straight line, effectively preventing the probe 205b from shifting. Specifically, a guide rail 101 is fixedly attached to the upper surface of the substrate 1; Furthermore, the two guide rails 101 are symmetrically arranged, and the guide rails 101 have a T-shaped structure; The operation process of this embodiment is as follows: place the substrate 1 flat on the workbench, tighten the bolt counterclockwise to fix the substrate 1 on the workbench; loosen the bolt clockwise to remove the substrate 1 from the workbench.

[0020] Example 2, please refer to Figure 1 and Figure 2 Based on the first specific embodiment, a detection component 2 is provided. The detection component 2 includes a movable frame 201, a motor 202, a bidirectional lead screw 202a, a mounting plate 203, a threaded seat 203a, a sleeve 203b, a guide shaft 204, an ultrasonic non-destructive testing instrument 205, a cable 205a, a probe 205b, a cylinder 206, and a connecting seat 206a. When the motor 202 is powered on, the bidirectional lead screw 202a rotates, adjusting the position of the probe 205b and pushing the movable frame 201. The movable frame 201 slides along the guide rail 101, adjusting the position of the probe 205b. The piston rod at the telescopic end of the cylinder 206 extends or retracts, adjusting the height of the probe 205b. This allows for comprehensive crack detection on the surface of the wind turbine blades. It eliminates the need for workers to hold the ultrasonic non-destructive testing instrument 205 in one hand and the probe 205b in the other, freeing up the workers' hands and not hindering them from performing other tasks. Specifically, the lower surface of the movable frame 201 has a sliding groove that slidably connects to the outer side of the guide rail 101. The inner top of the movable frame 201 has a mounting plate 203. One side wall of the mounting plate 203 has a fixed threaded seat 203a. Inside the threaded seat 203a is a threaded double-acting screw 202a. Both ends of the double-acting screw 202a are rotatably connected to the side wall of the movable frame 201. A motor 202 is mounted on the outer side wall of the movable frame 201. The output end of the motor 202 is connected to the end of the double-acting screw 202a. The side wall of the mounting plate 203 has a fixed sleeve 203b. On the side of seat 203b away from threaded seat 203a, there is a through guide shaft 204 inside the sleeve 203b. Both ends of the guide shaft 204 are connected to the side wall of the movable frame 201. An ultrasonic non-destructive testing instrument 205 is installed at the edge of the lower surface of the mounting plate 203. The end of the cable 205a electrically connected to the ultrasonic non-destructive testing instrument 205 has an electrically connected probe 205b. A vertically installed cylinder 206 is located at the center of the lower surface of the mounting plate 203. The lower end of the piston rod at the telescopic end of the cylinder 206 has a fixed connecting seat 206a. The connecting seat 206a is connected to the side wall of the probe 205b. Furthermore, the movable frame 201 has an inverted U-shaped structure, and the slide groove has a T-shaped groove structure; The operation process of this embodiment is as follows: When the cylinder 206 is opened, the piston rod at the telescopic end of the cylinder 206 moves downward, and both the connecting seat 206a and the probe 205b move downward. When the piston rod at the telescopic end of the cylinder 206 moves upward, both the connecting seat 206a and the probe 205b move upward until the probe 205b contacts the wind turbine blade placed on the substrate 1. The ultrasonic non-destructive testing instrument 205 is powered on, and the probe 205b performs crack detection on the wind turbine blade. The motor 202 is powered on, the bidirectional lead screw 202a rotates, the threaded seat 203a moves along the bidirectional lead screw 202a, the sleeve 203b moves along the guide shaft 204, the mounting plate 203 moves linearly, and the probe 205b moves accordingly, pushing the movable frame 201. The movable frame 201 slides along the guide rail 101, adjusting the position of the probe 205b so that the probe 205b can perform crack detection on the entire surface of the wind turbine blade.

[0021] Example 3, please refer to Figure 2 , Figure 3 and Figure 4 Based on specific embodiments one and two, a marking component 3 is provided. The marking component 3 includes a mounting bracket 301, a connecting rod 302, a return spring 302a, a protruding handle 302b, a marker pen 303, and an outer threaded sleeve 303a. When the protruding handle 302b is pressed down, the return spring 302a is compressed, and both the connecting rod 302 and the marker pen 303 move downward. The marker pen 303 marks the cracks on the wind turbine blades, making it easier for later staff to find and repair the cracks on the wind turbine blades. The outer threaded sleeve 303a is used to assemble and disassemble the marker pen 303. Specifically, the upper surface of the movable frame 201 has a through groove, the mounting frame 301 is installed at the lower edge of the mounting plate 203, the inner bottom of the mounting frame 301 has a vertically through connecting rod 302, the upper end of the connecting rod 302 has a protrusion 302b fixed above the through groove, the periphery of the connecting rod 302 has a sleeved return spring 302a, the upper end of the return spring 302a is connected to the lower surface of the protrusion 302b, the lower end of the return spring 302a is connected to the inner bottom of the mounting frame 301, the lower end of the connecting rod 302 has a screw hole, the upper periphery of the marker 303 has a sleeved outer screw sleeve 303a, the outer screw sleeve 303a is threaded into the inside of the screw hole; Furthermore, the mounting bracket 301 has a U-shaped structure; The operation process of this embodiment is as follows: When a crack is detected on the wind turbine blade, press down on the protrusion 302b, compress the return spring 302a, move the connecting rod 302 downward, and move the marker pen 303 downward. After the marker pen 303 contacts the wind turbine blade, it marks the crack on the wind turbine blade. When the protrusion 302b is released, the compressed return spring 302a extends and resets, and the marker pen 303 moves upward away from the wind turbine blade. When the marker pen 303 is rotated clockwise, the outer threaded sleeve 303a rotates clockwise and moves downward. After the outer threaded sleeve 303a disengages from the threaded hole, the marker pen 303 is removed from the connecting rod 302. When the marker pen 303 is rotated counterclockwise, the outer threaded sleeve 303a is threaded into the inside of the threaded hole, and the marker pen 303 is installed at the lower end of the connecting rod 302.

[0022] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A wind turbine blade surface crack detection device comprising a substrate (1), characterized in that: The upper surface of the substrate (1) is provided with a detection component (2). The detection component (2) includes a movable frame (201) disposed on the upper surface of the substrate (1). The inner top of the movable frame (201) is provided with a mounting plate (203). An ultrasonic non-destructive testing instrument (205) is mounted at the lower edge of the mounting plate (203). The end of the cable (205a) electrically connected to the ultrasonic non-destructive testing instrument (205) is electrically connected with a probe (205b). The lower surface of the mounting plate (203) is provided with a marking component (3). The marking component (3) includes a mounting bracket (301) installed at the edge of the lower surface of the mounting plate (203). The upper end of the connecting rod (302) that is connected through the inner bottom of the mounting bracket (301) has a fixed protrusion (302b). The periphery of the connecting rod (302) is provided with a return spring (302a). The two ends of the return spring (302a) are connected to the lower surface of the protrusion (302b) and the inner bottom of the mounting bracket (301). The lower end of the connecting rod (302) is provided with a marker pen (303).

2. The wind power blade surface crack detection device according to claim 1, characterized in that: The upper surface of the substrate (1) has symmetrically fixed guide rails (101), and the lower surface of the movable frame (201) has symmetrically opened sliding grooves, which are slidably connected to the outside of the guide rails (101).

3. The wind power blade surface crack detection device according to claim 2, characterized in that: The guide rail (101) has a T-shaped structure, the slide groove has a T-shaped groove structure, and the movable frame (201) has an inverted U-shaped structure.

4. The wind power blade surface crack detection device according to claim 1, characterized in that: The mounting plate (203) has a threaded seat (203a) fixed on its side wall. The threaded seat (203a) has a threaded double-acting screw (202a) inside. The two ends of the double-acting screw (202a) are rotatably connected to the side wall of the movable frame (201). The outer side wall of the movable frame (201) has a motor (202) installed. The output end of the motor (202) is connected to the end of the double-acting screw (202a).

5. The wind turbine blade surface crack detection device according to claim 4, characterized in that: The sleeve (203b) fixed to the side wall of the mounting plate (203) is away from the threaded seat (203a). The sleeve (203b) has a through guide shaft (204) inside, and the two ends of the guide shaft (204) are connected to the side wall of the movable frame (201).

6. The wind power blade surface crack detection device according to claim 1, characterized in that: A cylinder (206) is installed at the center of the lower surface of the mounting plate (203). The connecting seat (206a) fixed to the lower end of the piston rod of the cylinder (206) is connected to the side wall of the probe (205b).

7. The wind power blade surface crack detection device according to claim 1, characterized in that: The mounting bracket (301) has a U-shaped structure, and the upper surface of the movable bracket (201) has a through groove, through which the upper end of the connecting rod (302) passes.

8. The wind power blade surface crack detection device according to claim 1, characterized in that: The marker (303) has an external threaded sleeve (303a) on its upper periphery, and the lower end of the connecting rod (302) has a threaded hole. The external threaded sleeve (303a) is threadedly connected to the lower end of the connecting rod (302) through the threaded hole.

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