Fan blade monitoring system, fan blade and fan

Abstract

The embodiment of the utility model provides a fan blade monitoring system, a fan blade and a fan. The fan blade monitoring system comprises an optical sensor, a variable pitch slip ring, a communication data conversion module, a cabin switch, a tower footing switch, an optical fiber junction box and a booster station monitoring background. The optical sensor is installed on the inner side of a blade cover plate of the fan blade and used for collecting the illumination intensity of the two sides of a blade web in the fan blade. The optical sensor is in communication connection with the variable-pitch slip ring, the variable-pitch slip ring is in communication connection with the communication data conversion module, and the communication data conversion module is in communication connection with the cabin switch; the cabin switch is in communication connection with the tower footing switch; the tower footing switch is in communication connection with the optical fiber junction box; and the optical fiber junction box is in communication connection with the booster station monitoring background, so that a worker can be prompted to overhaul the fan blades in time.

Description

Technical Field

[0001] The present application relates to the technical field of wind energy equipment, and in particular to a wind turbine blade monitoring system, a wind turbine blade, and a wind turbine. Background Art

[0002] Wind turbine blades are one of the important components of wind turbines. When wind turbine blades are cracked or broken, they will shut down for a long time, causing serious power loss. Therefore, it is necessary to monitor the status of wind turbine blades.

[0003] In the prior art, monitoring equipment (such as a camera) is installed on the fan blades to monitor the status of the fan blades in real time.

[0004] However, in the prior art, monitoring by monitoring equipment such as cameras requires workers to manually check the images sent back by the cameras. When the workers are off duty or not at work, the failure of the wind turbine blades cannot be repaired in time. Utility Model Content

[0005] The embodiments of the present application provide a fan blade monitoring system, a fan blade, and a fan to solve the problem in the prior art that workers cannot repair fan blade failures in a timely manner.

[0006] To achieve the above objectives, the present application provides the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides a wind turbine blade monitoring system, comprising:

[0008] Optical sensor (101), pitch change slip ring (102), communication data conversion module (103), cabin switch (104), tower base switch (105), optical fiber distribution box (106) and booster station monitoring background (107);

[0009] The optical sensor (101) is installed on the inner side of the blade cover (20) of the fan blade and is used to collect the light intensity on both sides of the blade web (30) in the fan blade;

[0010] The optical sensor (101) is communicatively connected to the pitch change slip ring (102), the pitch change slip ring (102) is communicatively connected to the communication data conversion module (103), and the communication data conversion module (103) is communicatively connected to the cabin switch (104);

[0011] The cabin switch (104) is communicatively connected with the tower base switch (105);

[0012] The tower-based switch (105) is communicatively connected to the optical fiber branch junction box (106);

[0013] The optical fiber branch junction box (106) is in communication connection with the booster station monitoring backend (107).

[0014] In a possible design, mounting holes (201) are distributed on the inner side of the blade cover plate (20), the mounting holes (201) are directly opposite to the two sides of the blade ventral plate (30), and the optical sensor (101) is deployed in the mounting holes (201); the signal collection direction of the optical sensor (101) is toward the two sides of the blade ventral plate (30), and is used to collect the light intensity on the two sides of the blade ventral plate (30).

[0015] In a possible design, the optical sensor (101) is communicatively connected to the pitch slip ring (102) via a communication line (108).

[0016] In a possible design, the wind turbine blade monitoring system further includes: a power module (109); the power module (109) is wiredly connected to the optical sensor (101) and is used to supply power to the optical sensor (101).

[0017] In a possible design, the power module (109) is a wind energy collection power module or a solar energy collection power module.

[0018] In a possible design, the cabin switch (104) is connected to the booster station monitoring backend (107) via wireless communication.

[0019] In a possible design, the wind turbine blade monitoring system further includes: a wireless communication module (110), wherein the wireless communication module (110) is fixed inside the cabin switch (104); and the wireless communication module (110) is connected to the booster station monitoring background (107) via wireless communication.

[0020] In a possible design, the wind turbine blade monitoring system further includes: a temperature sensor (111); the temperature sensor (111) is installed on the inner side of the blade cover plate (20), and the temperature sensor (111) is communicatively connected to the pitch slip ring (102); and the signal collection direction of the temperature sensor (111) is toward both sides of the blade web (30), so as to collect the temperature of both sides of the blade web (30).

[0021] In a possible design, an alarm indicator light (112) is installed on the booster station monitoring backend (107); the alarm indicator light (112) is communicatively connected to the optical fiber branch junction box (106).

[0022] In a second aspect, an embodiment of the present application provides a wind turbine blade, comprising a blade cover plate (20) and a blade web (30), and a wind turbine blade monitoring system as described in the first aspect above.

[0023] In a third aspect, an embodiment of the present application provides a wind fan, comprising the wind fan blade as described in the second aspect above.

[0024] Compared with the related art, the fan blade monitoring system, fan blade and fan provided by the embodiment of the present application have the following advantages:

[0025] By installing an optical sensor on the inner side of the blade cover of the wind turbine blade, the light intensity on both sides of the blade web is collected. When the light intensity changes, the optical sensor transmits the changing alarm signal through the variable pitch slip ring, communication data conversion module, cabin switch, tower base switch and optical fiber distribution box to the booster station monitoring background in sequence. The booster station monitoring background outputs an alarm to the staff. Compared with the existing technology, there is no need for the staff to pay attention to the images sent back by the camera at all times, and the staff can be prompted in time to repair the wind turbine blades.

[0026] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by a wind blade monitoring system, a wind blade, and a wind fan provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 The structure of the fan blade monitoring system provided in the embodiment of the present application is shown in FIG. Figure 1 ;

[0029] Figure 2 It is a schematic diagram of the device structure of the blade cover plate of the fan blade provided in an embodiment of the present application;

[0030] Figure 3 The structure of the fan blade monitoring system provided in the embodiment of the present application is shown in FIG. Figure 2 ;

[0031] Figure 4The structure of the fan blade monitoring system provided in the embodiment of the present application is shown in FIG. Figure 3 ;

[0032] Figure 5 The structure of the fan blade monitoring system provided in the embodiment of the present application is shown in FIG. Figure 4 ;

[0033] Figure 6 The structure of the fan blade monitoring system provided in the embodiment of the present application is shown in FIG. Figure 5 ;

[0034] Figure 7 The structure of the fan blade monitoring system provided in the embodiment of the present application is shown in FIG. Figure 6 .

[0035] Reference numerals:

[0036] 101- optical sensor;

[0037] 102-pitch slip ring;

[0038] 103-communication data conversion module;

[0039] 104-cabin switch;

[0040] 105-tower base switch;

[0041] 106-optical fiber distribution box;

[0042] 107-Booster station monitoring background;

[0043] 108-communication line;

[0044] 109-power module;

[0045] 110-wireless communication module;

[0046] 111- temperature sensor;

[0047] 112- warning indicator light;

[0048] 20-blade cover;

[0049] 201-mounting hole;

[0050] 30-Blade belly. DETAILED DESCRIPTION

[0051] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples consistent with some aspects of the present application as detailed in the attached claims.

[0052] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" or "laid on" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0053] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0055] When cracks or breaks occur in fan blades, the fan will be shut down for a long time, resulting in power loss. Workers need to monitor the status of the fan blades in real time. In the prior art, monitoring equipment, such as cameras, are installed on the fan blades to monitor the status of the fan blades in real time. However, in the prior art, monitoring by monitoring equipment such as cameras requires workers to manually check the images sent back by the cameras. When the workers are off duty or not at work, the fan blade failure cannot be repaired in time.

[0056] In order to solve the above technical problems, the embodiments of the present application propose the following technical concepts: the inventor considers installing an optical sensor on the inner side of the blade cover of the fan blade, and using the optical sensor to collect the light intensity on both sides of the blade web inside the fan blade. When the blade web cracks, the light intensity will change, and the optical sensor can sensitively collect the change in light intensity. The data collected by the optical sensor is transmitted to the booster station monitoring background, and the booster station monitoring background prompts the staff to repair the fan blades in time. Compared with the existing technology, there is no need for the staff to pay attention to the video monitoring content at all times, so that the staff can be prompted to repair the fan blades in time.

[0057] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by a wind blade monitoring system, a wind blade, and a wind fan provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods.

[0058] Figure 1 The structure of the fan blade monitoring system provided in the embodiment of the present application is shown in FIG. Figure 1 . Figure 2 It is a schematic diagram of the device structure of the blade cover plate of the fan blade provided in an embodiment of the present application. Figure 3 The structure of the fan blade monitoring system provided in the embodiment of the present application is shown in FIG. Figure 2 . Figure 4 The device structure diagram of the wind turbine blade monitoring system provided in the embodiment of the present application is Figure 3 . Figure 5 The device structure diagram of the wind turbine blade monitoring system provided in the embodiment of the present application is Figure 4 . Figure 6 The device structure diagram of the wind turbine blade monitoring system provided in the embodiment of the present application is Figure 5 . Figure 7 The device structure diagram of the wind turbine blade monitoring system provided in the embodiment of the present application is Figure 6 .

[0059] See also Figures 1 to 7 The embodiment of the present application provides a fan blade monitoring system, the fan blade monitoring system comprising:

[0060] Optical sensor 101, pitch slip ring 102, communication data conversion module 103, cabin switch 104, tower base switch 105, optical fiber distribution box 106 and booster station monitoring background 107.

[0061] The optical sensor 101 is mounted on the inner side of the blade cover plate 20 of the wind turbine blade, and is used to collect the light intensity on both sides of the blade web 30 in the wind turbine blade.

[0062] Exemplarily, the optical sensor 101 may be a S2387 photodiode.

[0063] In this embodiment, the number of optical sensors installed may be multiple. Optionally, the number of optical sensors is two, four or six.

[0064] refer to Figure 2 The mounting holes 201 are distributed inside the blade cover plate 20, and the mounting holes 201 are directly opposite to the two sides of the blade web 30. The optical sensor 101 is deployed in the mounting holes 201. The signal collection direction of the optical sensor 101 is toward the two sides of the blade web 30, and is used to collect the light intensity on both sides of the blade web 30.

[0065] In this embodiment, the blade cover plate 20 is a circular blade cover plate.

[0066] In this embodiment, when shallow cracks on the blade and paint peeling occur on both sides of the blade web 30, which are difficult to observe, the light intensity on both sides of the blade web 30 will change, and the change in light intensity is collected by the optical sensor 101.

[0067] The optical sensor 101 is communicatively connected to the pitch slip ring 102 , the pitch slip ring 102 is communicatively connected to the communication data conversion module 103 , and the communication data conversion module 103 is communicatively connected to the cabin switch 104 .

[0068] In this embodiment, the optical sensor 101 is communicatively connected to the pitch slip ring 102 via a communication line 108 .

[0069] In this embodiment, the communication connection mode may be a wired communication connection or a wireless communication connection.

[0070] Among them, the wired communication connection methods include but are not limited to optical fiber connection, communication line connection, coaxial cable connection and twisted pair cable connection.

[0071] In this embodiment, the communication data conversion module 103 can convert the electrical signal into an optical signal.

[0072] The cabin switch 104 is communicatively connected to the tower base switch 105 .

[0073] In this embodiment, the cabin switch 104 can receive fault signals of multiple wind turbine devices.

[0074] In this embodiment, the cabin switch 104 and the booster station monitoring backend 107 may be connected via wired communication.

[0075] In this embodiment, the cabin switch 104 and the booster station monitoring backend 107 may also be connected via wireless communication.

[0076] refer to Figure 3 The cabin switch 104 also includes a wireless communication module 110, which is fixed inside the cabin switch 104; the wireless communication module 110 is connected to the booster station monitoring background 107 through wireless communication.

[0077] The tower base switch 105 is communicatively connected to the optical fiber branch junction box 106 .

[0078] In this embodiment, the tower base switch 105 forwards the data in the cabin switch 104 to the booster station monitoring background 107 through the optical fiber branch box 106.

[0079] The optical fiber distribution box 106 is in communication connection with the booster station monitoring backend 107 .

[0080] In this embodiment, the optical fiber distribution box 106 connects multiple optical fibers to the booster station monitoring backend 107 .

[0081] refer to Figure 4 An alarm indicator light 112 is installed on the booster station monitoring background 107; the alarm indicator light 112 is communicatively connected with the optical fiber distribution junction box 106.

[0082] In one implementation of this embodiment, the working process of the wind turbine blade monitoring system provided by this embodiment includes:

[0083] When the optical sensor detects changes in light intensity on both sides of the blade web, an alarm signal is generated; the optical sensor transmits the alarm signal to the booster station monitoring background through the pitch slip ring, communication data conversion module, cabin switch, tower base switch and fiber optic distribution box in sequence, and the booster station monitoring background outputs an alarm based on the alarm signal.

[0084] In addition, it should be noted that, in another implementation of this embodiment, the working process of the wind turbine blade monitoring system provided by this embodiment may also be:

[0085] When the optical sensor detects the change in light intensity on both sides of the blade web, it collects the current light intensity. The optical sensor transmits the light intensity to the booster station monitoring background through the pitch slip ring, communication data conversion module, cabin switch, tower base switch and optical fiber junction box in sequence; the booster station monitoring background performs the following analysis based on the current light intensity and outputs different types of alarms, namely:

[0086] The monitoring background of the substation will compare the "Monthly Light Intensity Table" and issue an alarm to the staff when the light intensity is higher than the alarm threshold; when it exceeds the alarm threshold by more than 10%, a fault alarm will be issued to the staff.

[0087] Among them, the monthly light intensity table Y is:

[0088]

[0089] Where X represents the year, Y represents the month, and the maximum light intensity in month Y of year X represents the maximum light intensity in month Y of each year in year X.

[0090] Among them, the fault alarm threshold is:

[0091] Fault alarm threshold = alarm threshold × 1.2

[0092] Alarm threshold = monthly minimum light intensity × leaf transmittance T

[0093] The calculation formula of leaf transmittance is:

[0094]

[0095] In the formula, A represents absorbance, which can be measured by a spectrophotometer; lg() represents logarithmic operation with base 10; T represents the light transmittance of the leaf.

[0096] It can be seen from the above embodiments that by installing an optical sensor on the inner side of the blade cover of the wind turbine blade, the light intensity on both sides of the blade web is collected. When the light intensity changes, the optical sensor transmits the changed alarm signal in sequence through the variable pitch slip ring, the communication data conversion module, the cabin switch, the tower base switch and the optical fiber distribution box to the booster station monitoring background. The booster station monitoring background outputs an alarm to the staff. Compared with the existing technology, there is no need for the staff to pay attention to the images sent back by the camera at all times, and the staff can be prompted in time to perform wind turbine blade maintenance.

[0097] refer to Figure 5 and Figure 6 In one or more embodiments of the present application, the wind turbine blade monitoring system further includes: a power module 109. The power module 109 is wiredly connected to the optical sensor 101 and is used to supply power to the optical sensor 101.

[0098] In this embodiment, the power module 109 may be a 24V wind turbine hub power module, a wind energy collection power module, or a solar energy collection power module.

[0099] It can be seen from the above embodiments that by configuring a power module separately for the optical sensor, the power supply circuit of the fan is separated from the power supply circuit of the sensor, and the wind or solar energy collection power module is used to power the optical sensor, thereby reducing the use of traditional electrical energy.

[0100] refer to Figure 7 In one or more embodiments of the present application, the wind turbine blade monitoring system further includes: a temperature sensor 111. The temperature sensor 111 is installed on the inner side of the blade cover plate 20, and the temperature sensor 111 is communicatively connected with the pitch slip ring 102. The signal collection direction of the temperature sensor 111 is toward both sides of the blade web 30, and is used to collect the temperature of both sides of the blade web 30.

[0101] The working process of the fan blade monitoring system provided in this embodiment also includes: when the fan blades are in a high temperature environment, the fan blades become soft and deformed, affecting the operation of the fan; when the fan blades are in a low temperature environment, the maximum dynamic stress of the fan blades exceeds the allowable value, and the blades will break. The temperature of the blade web is collected by a temperature sensor. When the temperature reaches the alarm threshold, an alarm signal is generated and transmitted to the booster station monitoring background through the variable pitch slip ring, communication data conversion module, cabin switch, tower base switch and optical fiber distribution box in sequence. The booster station monitoring background outputs an alarm.

[0102] It can be seen from the above embodiments that the temperature of the blade web is collected by the temperature sensor, and when the temperature is too high or too low, an alarm is generated to prompt the staff to repair the fan blade in time.

[0103] An embodiment of the present application further provides a wind turbine blade, which includes a blade cover plate 20, a blade web plate 30, and a wind turbine blade monitoring system provided in the above embodiments.

[0104] An embodiment of the present application further provides a wind turbine, which includes a blade cover plate 20, a blade web plate 30, and the wind turbine blade provided in the above embodiment.

[0105] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0106] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fan blade monitoring system, characterized in that: include: Optical sensor (101), pitch change slip ring (102), communication data conversion module (103), cabin switch (104), tower base switch (105), optical fiber distribution box (106) and booster station monitoring background (107); The optical sensor (101) is installed on the inner side of the blade cover (20) of the fan blade and is used to collect the light intensity on both sides of the blade web (30) in the fan blade; The optical sensor (101) is communicatively connected to the pitch change slip ring (102), the pitch change slip ring (102) is communicatively connected to the communication data conversion module (103), and the communication data conversion module (103) is communicatively connected to the cabin switch (104); The cabin switch (104) is communicatively connected with the tower base switch (105); The tower-based switch (105) is communicatively connected to the optical fiber branch junction box (106); The optical fiber branch junction box (106) is in communication connection with the booster station monitoring backend (107).

2. The wind turbine blade monitoring system according to claim 1, characterized in that: Mounting holes (201) are distributed on the inner side of the blade cover plate (20), the mounting holes (201) are directly opposite to the two sides of the blade ventral plate (30), and the optical sensor (101) is deployed in the mounting holes (201); the signal collection direction of the optical sensor (101) is toward the two sides of the blade ventral plate (30), and is used to collect light intensity on the two sides of the blade ventral plate (30).

3. The wind turbine blade monitoring system according to claim 1, characterized in that: The optical sensor (101) is communicatively connected to the pitch slip ring (102) via a communication line (108).

4. The wind turbine blade monitoring system according to claim 3, characterized in that: Also includes: A power module (109); the power module (109) is connected to the optical sensor (101) by wire and is used to supply power to the optical sensor (101).

5. The wind turbine blade monitoring system according to claim 4, characterized in that: The power module (109) is a wind energy collection power module or a solar energy collection power module.

6. The wind turbine blade monitoring system according to claim 1, characterized in that: The cabin switch (104) is connected to the booster station monitoring backend (107) by wireless communication.

7. The wind turbine blade monitoring system according to claim 6, characterized in that: Also includes: A wireless communication module (110), wherein the wireless communication module (110) is fixed inside the cabin switch (104); the wireless communication module (110) is connected to the booster station monitoring background (107) by wireless communication.

8. The wind turbine blade monitoring system according to claim 1, characterized in that: Also includes: A temperature sensor (111); the temperature sensor (111) is installed on the inner side of the blade cover plate (20), and the temperature sensor (111) is communicatively connected to the pitch change slip ring (102); the signal collection direction of the temperature sensor (111) is toward both sides of the blade web (30), and is used to collect the temperature of both sides of the blade web (30).

9. The wind turbine blade monitoring system according to any one of claims 1 to 8, characterized in that: The booster station monitoring backend (107) is equipped with an alarm indicator light (112); the alarm indicator light (112) is communicatively connected to the optical fiber distribution box (106).

10. A fan blade, characterized in that: The wind turbine blade monitoring system comprises a blade cover plate (20) and a blade web plate (30), and the wind turbine blade monitoring system according to any one of claims 1 to 8.

11. A fan, characterized in that: The wind fan comprises the wind fan blade according to claim 10.

Images