Detection and identification device for fan blade root bolt fracture analysis

Abstract

The utility model discloses a detection and identification device for fan blade root bolt fracture analysis, and relates to the technical field of wind power, and the detection and identification device for fan blade root bolt fracture analysis is provided with a supporting seat, a fixing block, a pressure sensor, a miniature camera and an edge calculation control box. Each bolt is detected, the edge calculation control box can receive signals of all the pressure sensors, the intelligent edge early warning technology, various machine learning model software and an edge calculation platform are integrated, the device obtains knowledge from a user, input data and the like, and therefore the device automatically judges and outputs corresponding results. In addition, an alarm is further arranged on the edge calculation control box, on-site real-time alarm and related index data display can be achieved, when the blade root bolt is loosened and broken, the system can give an alarm on line and can also give an alarm on the site of a fan, and people can find problems in time and make corresponding processing.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power, in particular to a detection and identification device for analyzing the fracture of a fan blade root bolt. Background Art

[0002] At present, the blade root bolts of wind turbines are used to connect the pitch bearings and blades. Since the bolts may become loose during long-term use of the wind turbine, or break due to excessive rotation speed, in order to detect and solve the problem in time, it is usually necessary to perform deformation detection on the bolts to ensure that the bolts can be used normally.

[0003] For example, the utility model with patent number CN202222299926.8 discloses a blade root bolt fracture fault detection device, which includes a wire tube and a controller respectively. The surface of the wire tube is connected to a number of detection modules. The detection module includes a bolt body. The top of the bolt body is provided with a sealing recessed hole with a top opening. The inner wall of the sealing recessed hole is provided with a group of ventilation grooves distributed in a circular array. The inside of the bolt body and the position corresponding to each ventilation groove are fixedly provided with an airtight sub-chamber. The internal axis position of the bolt body is also provided with an airtight main chamber connected to the sealing recessed hole. The top of each airtight sub-chamber is connected to the airtight main chamber through the ventilation groove. Through the design of the detection module, the utility model adds an automatic monitoring mechanism for the operating status of the bolt on the basis of the traditional fan bolts. When the bolt body has a longitudinal micro-fracture, the airtight sub-chamber in this direction leaks pressure. After the pressure leaks, the monitoring value of the air pressure sensor automatically changes.

[0004] The detection device in this patent outputs a switch signal through a switch sensor, and determines whether the bolt is damaged based on the number of pulses received by the main control system. However, the detection device in this patent can only receive signals at the terminal and cannot perform early warning analysis on the effective status of the root bolts of the wind turbine blades. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a detection and identification device for analyzing the fracture of fan blade root bolts, which solves the problem that the device cannot perform early warning analysis on the effective status of the fan blade root bolts.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a detection and identification device for wind turbine blade root bolt fracture analysis, comprising a mounting plate, a support seat is fixedly installed on the upper end of the mounting plate, a bolt body is detachably installed on the mounting plate, a nut is arranged on the outside of the bolt body, evenly distributed fixing blocks are fixedly installed on the upper surface of the mounting plate, an electrical connecting wire is fixedly installed on the fixing block, a pressure sensor is fixedly installed on the end of the electrical connecting wire, a detection hole corresponding to the pressure sensor is opened on the surface of the bolt body, an edge computing control box is arranged on the inner side of the mounting plate, an alarm is arranged on the outside of the edge computing control box, and a miniature camera is fixedly installed on the upper end of the edge computing control box.

[0007] Preferably, a wire groove is provided on the surface of the support seat, and the electrical connection wire is arranged inside the wire groove.

[0008] Preferably, a connecting plate is fixedly installed on the outside of the edge computing control box, and a mounting hole is opened on the surface of the connecting plate.

[0009] Preferably, a cover plate is detachably mounted on the outside of the edge computing control box, and a card slot corresponding to the cover plate is opened on the surface of the edge computing control box.

[0010] Preferably, a power supply is provided inside the edge computing control box, a circuit board is provided inside the power supply, a control module is provided on the upper side of the circuit board, a signal receiving module is provided on the side of the control module, and a signal transmitting module is provided on the upper side of the signal receiving module.

[0011] Preferably, evenly distributed heat dissipation grooves are opened on both sides of the edge computing control box, and baffles are arranged outside the heat dissipation grooves.

[0012] Beneficial Effects

[0013] The utility model provides a detection and identification device for analyzing the fracture of fan blade root bolts. Compared with the prior art, it has the following beneficial effects:

[0014] The detection and identification device for analyzing the fracture of fan blade root bolts is equipped with a support base, a fixing block, a pressure sensor, a micro camera and an edge computing control box to detect each bolt, so that the edge computing control box can receive signals from all pressure sensors, integrate intelligent edge early warning technology, a variety of machine learning model software and an edge computing platform, so that the device can obtain knowledge from users and input data, so that the equipment can automatically judge and output corresponding results. In addition, an alarm is also set on the edge computing control box, which can realize real-time on-site alarm and display relevant indicator data. When the blade root bolt is loose or broken, the system can alarm online and at the fan site, so that people can find the problem in time and take corresponding measures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 The enlarged view of point A in the middle;

[0017] Figure 3 It is a structural schematic diagram of the pressure sensor in the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the edge computing control box in the utility model.

[0019] In the figure: 1. Mounting plate; 2. Bolt body; 3. Nut; 4. Support seat; 401. Wire trough; 5. Fixing block; 6. Pressure sensor; 7. Electrical connecting wire; 8. Edge computing control box; 9. Alarm; 10. Micro camera; 11. Connecting plate; 1101. Mounting hole; 12. Cover plate; 13. Baffle; 14. Power supply; 15. Circuit board. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a detection and identification device for analyzing the fracture of a fan blade root bolt, comprising a mounting plate 1, a support seat 4 is fixedly installed on the upper end of the mounting plate 1, a bolt body 2 is detachably installed on the mounting plate 1, a nut 3 is arranged on the outer side of the bolt body 2, and evenly distributed fixing blocks 5 are fixedly installed on the upper surface of the mounting plate 1, an electrical connecting line 7 is fixedly installed on the fixing block 5, a pressure sensor 6 is fixedly installed on the end of the electrical connecting line 7, and a detection hole corresponding to the pressure sensor 6 is opened on the surface of the bolt body 2, an edge computing control box 8 is arranged on the inner side of the mounting plate 1, an alarm 9 is arranged on the outer side of the edge computing control box 8, and a micro camera 10 is fixedly installed on the upper end of the edge computing control box 8. The alarm 9 can promptly issue an alarm after receiving fault information. The micro camera 10 is used to monitor the connection status of the bolt body 2, and can promptly observe when looseness occurs between the nut 3 and the bolt body 2 to prevent the blade from falling off.

[0022] The support base 4 has a wire groove 401 on its surface, the electrical connection line 7 is arranged inside the wire groove 401, a connection plate 11 is fixedly installed on the outside of the edge computing control box 8, a mounting hole 1101 is arranged on the surface of the connection plate 11, a cover plate 12 is detachably installed on the outside of the edge computing control box 8, a card slot corresponding to the cover plate 12 is arranged on the surface of the edge computing control box 8, a power supply 14 is arranged inside the edge computing control box 8, a circuit board 15 is arranged inside the power supply 14, a control module is arranged on the upper side of the circuit board 15, a signal receiving module is arranged on the side of the control module, and a signal transmission module is arranged on the upper side of the signal receiving module Module, the signal transmission module terminal is equipped with an edge computing platform, and the edge computing platform is used to perform early warning analysis on the effective status of the blade root bolts of the wind turbine blades. New technologies such as deep learning and random process probability characteristic analysis are used to realize real-time operation data collection of the unit, data preprocessing and identification, key data storage and data encryption, blade root bolt fracture algorithm model, bolt operation status calculation and analysis, and bolt health assessment. Evenly distributed heat dissipation slots are opened on both sides of the edge computing control box 8, and a baffle 13 is arranged on the outside of the heat dissipation slot. By setting the baffle 13, dust can be prevented from entering the edge computing control box 8.

[0023] During operation, first fix the entire device at the blade root fixing position inside the fan, then fix the edge computing control box 8 on the mounting plate 1 and the inner side of the support seat 4, then install the bolt body 2 and the fan blade in place, and install the pressure sensor 6 on each bolt body 2, then connect the electrical connection lines 7 of the pressure sensor 6 to each other, and connect the terminal inside the edge computing control box 8 to form a complete detection and identification system with the edge computing control box 8, and then turn on the pressure sensor 6, the micro camera 10 and the alarm 9. When the pressure sensor 6 detects abnormal pressure or the micro camera 10 observes that the bolt body 2 is loose, it will transmit the information to the edge computing control box 8, and the edge computing control box 8 will transmit the information to the terminal edge computing platform to perform early warning analysis on the effective status of the fan blade root bolts.

[0024] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A detection and identification device for analyzing the fracture of a fan blade root bolt, comprising a mounting plate (1), characterized in that: A support seat (4) is fixedly installed on the upper end of the mounting plate (1), a bolt body (2) is detachably installed on the mounting plate (1), a nut (3) is arranged on the outer side of the bolt body (2), evenly distributed fixing blocks (5) are fixedly installed on the upper surface of the mounting plate (1), an electrical connection line (7) is fixedly installed on the fixing block (5), a pressure sensor (6) is fixedly installed at the end of the electrical connection line (7), a detection hole corresponding to the pressure sensor (6) is opened on the surface of the bolt body (2), an edge computing control box (8) is arranged on the inner side of the mounting plate (1), an alarm (9) is arranged on the outer side of the edge computing control box (8), and a micro camera (10) is fixedly installed on the upper end of the edge computing control box (8).

2. The detection and identification device for analyzing the fracture of a fan blade root bolt according to claim 1 is characterized in that: A wire groove (401) is provided on the surface of the support seat (4), and the electrical connection wire (7) is arranged inside the wire groove (401).

3. The detection and identification device for analyzing the fracture of fan blade root bolts according to claim 1 is characterized in that: The edge computing control box (8) is fixedly mounted with a connecting plate (11) on the outside, and a mounting hole (1101) is provided on the surface of the connecting plate (11).

4. The detection and identification device for analyzing the fracture of a fan blade root bolt according to claim 1 is characterized in that: The edge computing control box (8) is detachably provided with a cover plate (12) on the outside, and a card slot corresponding to the cover plate (12) is provided on the surface of the edge computing control box (8).

5. The detection and identification device for analyzing the fracture of a fan blade root bolt according to claim 1 is characterized in that: The edge computing control box (8) is provided with a power supply (14) inside, the power supply (14) is provided with a circuit board (15) inside, a control module is provided on the upper side of the circuit board (15), a signal receiving module is provided on the side of the control module, and a signal transmission module is provided on the upper side of the signal receiving module.

6. The detection and identification device for analyzing the fracture of a fan blade root bolt according to claim 1 is characterized in that: Both sides of the edge computing control box (8) are provided with evenly distributed heat dissipation grooves, and baffles (13) are arranged outside the heat dissipation grooves.

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