Fault early warning and monitoring device for offshore wind turbine generator

Abstract

The invention discloses an offshore wind turbine generator set fault early warning and monitoring device, and particularly relates to the technical field of wind turbine generator sets, the offshore wind turbine generator set fault early warning and monitoring device comprises a stand column, a wind turbine generator set is arranged on the stand column, the wind turbine generator set comprises a fan mechanism and a wind power generation mechanism, and the fan mechanism comprises three connecting rods arranged on the wind power generation mechanism; blades are arranged on the connecting rod, a shielding cover for protecting the interior is connected to the wind turbine unit in a clamped mode, a temperature sensor is arranged on the wind power generation mechanism, a vibration sensor is fixedly installed on the side wall of the connecting rod, and tilt angle sensors are fixedly installed at the middle end and the bottom area of the stand column. A control box is arranged at the bottom end of the stand column. Through cooperation of the three different sensors, the rotation condition of the fan blade bearing and the inclination degree of the stand column can be monitored, and therefore when the wind turbine generator breaks down, the wind turbine generator can be rapidly maintained.

Description

Technical Field

[0001] This invention relates to the field of wind turbine technology, specifically to a fault early warning and monitoring device for offshore wind turbines. Background Technology

[0002] With the continuous development of offshore wind power technology, improving the reliability and safety of wind turbine units and reducing maintenance costs have become the focus of the industry. Offshore wind turbine units are complex multi-component systems that convert offshore wind energy into electrical energy.

[0003] When the wind turbine blades are affected by the wind, they start to drive the wind turbine hub and low-speed shaft rotor to rotate. At this time, the wind energy is converted into mechanical energy. Then, the mechanical energy is transmitted to the speed-increasing gearbox through the main shaft transmission chain to increase the speed. After speed increase, the high-speed shaft drives the wind turbine to rotate, thereby converting mechanical energy into electrical energy, which is finally connected to the power grid to supply users.

[0004] During the operation of a wind power system, the failure of any component or step can damage the entire wind turbine, and any abnormality in any link can trigger a chain reaction, adversely affecting the structural integrity, operating efficiency, and even the service life of the wind turbine. Therefore, a comprehensive fault monitoring and early warning mechanism is crucial to ensuring the long-term safe and stable operation of wind turbines. Summary of the Invention

[0005] The purpose of this invention is to provide a fault early warning and monitoring device for offshore wind turbines to address the aforementioned shortcomings in the technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a column is included, on which a wind turbine is mounted. The wind turbine includes a fan mechanism and a wind power generation mechanism. The fan mechanism includes three connecting rods disposed on the wind power generation mechanism. Blades are disposed on the connecting rods. A protective cover for the interior is snapped onto the wind turbine. A temperature sensor is disposed on the wind power generation mechanism. A vibration sensor is fixedly installed on the side wall of the connecting rods. An tilt sensor is fixedly installed at the middle and bottom areas of the column. A control box is disposed at the bottom of the column.

[0007] Furthermore, the control box is internally equipped with a control unit, a communication unit, and a power supply unit. The vibration sensor and temperature sensor are connected to the control unit via analog signal lines to transmit vibration and temperature data. The tilt sensor is connected to the control unit via digital signal lines to transmit tilt angle data. The control unit is connected to the communication unit via a serial communication interface to send early warning information.

[0008] Furthermore, the power supply unit is connected to the vibration sensor, temperature sensor, tilt sensor, control unit, and communication unit.

[0009] Furthermore, a moving device is provided on the column. The moving device includes a circular piece fixedly connected to the column. A rectangular strip is fixedly connected to the bottom of the circular piece. A slot is provided on the rectangular strip. A moving block is slidably connected to the inner wall of the slot. The moving block is connected to the control box.

[0010] Furthermore, the surface of the rectangular strip has multiple sets of threaded holes, and the top of the control box is fixedly connected to a connecting frame by fastening bolts. Two screws are symmetrically arranged on the surface of the connecting frame, and the screws penetrate the connecting frame into the interior of the threaded holes. The screws are threadedly connected to the threaded holes.

[0011] Furthermore, a rotating block is fixedly connected to one end of the screw near the connecting frame, and the rotating block is in the shape of a plum blossom.

[0012] Furthermore, the control box includes a cabinet and a cabinet door. The cabinet door is rotatably connected to the inner wall of the cabinet. A waterproof strip is fixedly connected to the outer wall of the cabinet door around its perimeter. Heat dissipation holes are provided on both sides of the cabinet door.

[0013] The above-described solution of the present invention has at least the following beneficial effects: 1. This invention, through the cooperation of three different sensors, can monitor the rotation of the fan blade bearing and the tilt of the column, thereby enabling the wind turbine to be repaired quickly when a fault occurs.

[0014] 2. By setting up a moving device, the height of the control box from the ground can be flexibly adjusted during installation to avoid factors such as short cables or insufficient space. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 It is in this application Figure 1 A partial disassembly diagram; Figure 3 It is in this application Figure 2 A partial structural diagram; Figure 4 It is in this application Figure 1 Enlarged view of point A.

[0016] Explanation of reference numerals in the attached figures: 1. Column; 2. Cover; 3. Wind power generation mechanism; 4. Fan mechanism; 41. Connecting rod; 42. Blade; 5. Vibration sensor; 6. Temperature sensor; 7. Tilt sensor; 8. Control box; 81. Cabinet; 82. Cabinet door; 83. Waterproof strip; 84. Heat dissipation hole; 9. Moving device; 91. Circular piece; 92. Rectangular strip; 93. Connecting frame; 94. Threaded hole; 95. Screw; 96. Rotary block; 97. Slot; 98. Moving block. Detailed Implementation

[0017] Example 1: The present invention provides, as follows Figures 1 to 4 The offshore wind turbine fault early warning and monitoring device shown includes a column 1, on which a wind turbine is mounted. The wind turbine includes a fan mechanism 4 and a wind power generation mechanism 3. The fan mechanism 4 includes three connecting rods 41 mounted on the wind power generation mechanism 3. Blades 42 are mounted on the connecting rods 41. A cover 2 for internal protection is snapped onto the wind turbine. A temperature sensor 6 is mounted on the wind power generation mechanism 3. A vibration sensor 5 is fixedly installed on the side wall of the connecting rods 41. An angle sensor 7 is fixedly installed in the middle and bottom areas of the column 1. A control box 8 is mounted at the bottom of the column 1.

[0018] The control box 8 contains a control unit, a communication unit, and a power supply unit. Vibration sensor 5 and temperature sensor 6 are connected to the control unit via analog signal lines, while tilt sensor 7 is connected to the control unit via digital signal lines to transmit tilt angle data. The control unit is connected to the communication unit via a serial communication interface to send warning information. Vibration sensor 5 and temperature sensor 6 can transmit data on the vibration level of the bearing and the temperature inside the cover 2, and send warning information via the communication unit. At the same time, the power supply unit is connected to vibration sensor 5, temperature sensor 6, tilt sensor 7, control unit, and communication unit to provide a stable power supply.

[0019] like Figure 3 As shown, the control box 8 includes a cabinet 81 and a cabinet door 82. The cabinet door 82 is rotatably connected to the inner wall of the cabinet 81. Waterproof strips 83 are fixedly connected to the outer walls of the cabinet door 82. The waterproof strips 83 can isolate water sources outside the control box. At the same time, heat dissipation holes 84 are provided on both sides of the cabinet door 82. The heat dissipation holes 84 are angled downward at 45 degrees, which can effectively allow external water sources to enter the control box 8 through the heat dissipation holes 84.

[0020] Furthermore, such as Figure 1 , Figure 3 and Figure 4A movable device 9 is installed on the column 1. The movable device 9 includes a circular piece 91 fixedly connected to the column 1. A rectangular strip 92 is fixedly connected to the bottom of the circular piece 91. A slot 97 is opened on the rectangular strip 92. A movable block 98 is slidably connected to the inner wall of the slot 97. The movable block 98 is connected to the control box 8. Multiple sets of threaded holes 94 are opened on the surface of the rectangular strip 92. A connecting frame 93 is fixedly connected to the top of the control box 8 by fastening bolts. Two screws 95 are symmetrically arranged on the surface of the connecting frame 93, and the screws 95 penetrate the connecting frame 93 to the inside of the threaded holes 94. The rod 95 is threadedly connected to the threaded hole 94. A rotating block 96 is fixedly connected to one end of the rod 95 near the connecting bracket 93. The rotating block 96 is shaped like a plum blossom. The moving block 98 can slide up and down on the inner wall of the slot 97. When the control box 8 is installed, factors such as short cables or insufficient space may require flexible adjustment of the height of the control box 8 from the ground. At this time, the control box 8 can be moved to a suitable height according to the above situation. Then, the rod 95 can be rotated directly to screw the rod 95 into the corresponding threaded hole 94, thereby fixing the control box 8.

[0021] Fan blade bearing rotation abnormality detection: Vibration sensor 5 is an accelerometer such as an ICP accelerometer, model: PCB352C33; Temperature sensor 6 is a PT100 thermal resistor or a DS18B20 digital temperature sensor 6; Vibration sensor 5 is used to monitor the vibration level of the bearing, and when the vibration exceeds the preset threshold, an alarm is triggered; Temperature sensor 6 is used to monitor the temperature change of the bearing inside the cover 2, and when the temperature rises abnormally, an alarm is also triggered.

[0022] Example 2: Provided as follows Figures 1 to 4 The offshore wind turbine fault early warning and monitoring device shown includes a column 1, on which a wind turbine is mounted. The wind turbine includes a fan mechanism 4 and a wind power generation mechanism 3. The fan mechanism 4 includes three connecting rods 41 mounted on the wind power generation mechanism 3. Blades 42 are mounted on the connecting rods 41. A cover 2 for internal protection is snapped onto the wind turbine. A temperature sensor 6 is mounted on the wind power generation mechanism 3. A vibration sensor 5 is fixedly installed on the side wall of the connecting rods 41. An angle sensor 7 is fixedly installed in the middle and bottom areas of the column 1. A control box 8 is mounted at the bottom of the column 1.

[0023] The control box 8 contains a control unit, a communication unit, and a power supply unit. Vibration sensor 5 and temperature sensor 6 are connected to the control unit via analog signal lines, while tilt sensor 7 is connected to the control unit via digital signal lines to transmit tilt angle data. The control unit is connected to the communication unit via a serial communication interface to send warning information. Vibration sensor 5 and temperature sensor 6 can transmit data on the vibration level of the bearing and the temperature inside the cover 2, and send warning information via the communication unit. At the same time, the power supply unit is connected to vibration sensor 5, temperature sensor 6, tilt sensor 7, control unit, and communication unit to provide a stable power supply.

[0024] like Figure 3 As shown, the control box 8 includes a cabinet 81 and a cabinet door 82. The cabinet door 82 is rotatably connected to the inner wall of the cabinet 81. Waterproof strips 83 are fixedly connected to the outer walls of the cabinet door 82. The waterproof strips 83 can isolate water sources outside the control box. At the same time, heat dissipation holes 84 are provided on both sides of the cabinet door 82. The heat dissipation holes 84 are angled downward at 45 degrees, which can effectively allow external water sources to enter the control box 8 through the heat dissipation holes 84.

[0025] Furthermore, such as Figure 1 , Figure 3 and Figure 4 A movable device 9 is installed on the column 1. The movable device 9 includes a circular piece 91 fixedly connected to the column 1. A rectangular strip 92 is fixedly connected to the bottom of the circular piece 91. A slot 97 is opened on the rectangular strip 92. A movable block 98 is slidably connected to the inner wall of the slot 97. The movable block 98 is connected to the control box 8. Multiple sets of threaded holes 94 are opened on the surface of the rectangular strip 92. A connecting frame 93 is fixedly connected to the top of the control box 8 by fastening bolts. Two screws 95 are symmetrically arranged on the surface of the connecting frame 93, and the screws 95 penetrate the connecting frame 93 to the inside of the threaded holes 94. The rod 95 is threadedly connected to the threaded hole 94. A rotating block 96 is fixedly connected to one end of the rod 95 near the connecting bracket 93. The rotating block 96 is shaped like a plum blossom. The moving block 98 can slide up and down on the inner wall of the slot 97. When the control box 8 is installed, factors such as short cables or insufficient space may require flexible adjustment of the height of the control box 8 from the ground. At this time, the control box 8 can be moved to a suitable height according to the above situation. Then, the rod 95 can be rotated directly to screw the rod 95 into the corresponding threaded hole 94, thereby fixing the control box 8.

[0026] Column 1 tilt detection: The tilt sensor 7 is a dual-axis tilt sensor, model MEMSICMX925. The tilt sensor is used to monitor the tilt of column 1. When the tilt angle of column 1 exceeds the preset threshold, an alarm is triggered.

[0027] In summary, the vibration level of the bearing and the temperature inside the cover 2 can be monitored by the temperature sensor 6 and the vibration sensor 5. At the same time, the tilt sensor 7 can monitor the tilt angle of the column 1. When any abnormality occurs, the communication unit integrated inside the control box 8 will send an early warning to the relevant maintenance personnel. Meanwhile, the moving device 9 allows the height of the control box 8 to be quickly adjusted by the rectangular strip 92 during disassembly or installation, and the height of the control box 8 can be fixed by the cooperation of the screw 95 and the threaded hole 94.

[0028] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fault early warning and monitoring device for offshore wind turbines, characterized in that, include: A column (1) is provided with a wind turbine unit at the top of the column (1). The wind turbine unit includes a fan mechanism (4) and a wind power generation mechanism (3). The fan mechanism (4) includes a connecting rod (41) connected to one end of the wind power generation mechanism (3). The other end of the connecting rod (41) is connected to a blade (42). A cover (2) for internal protection is snapped onto the wind power generation mechanism (3). A temperature sensor (6) is provided on the wind power generation mechanism (3). A vibration sensor (5) is fixedly installed on the side wall of the connecting rod (41). An tilt sensor (7) is fixedly installed in the middle and bottom areas of the column (1). A control box (8) is provided at the bottom of the column (1).

2. The offshore wind turbine fault early warning and monitoring device according to claim 1, characterized in that, The control box (8) is equipped with a control unit, a communication unit and a power supply unit. The vibration sensor (5) and the temperature sensor (6) are connected to the control unit through analog signal lines. The tilt sensor (7) is connected to the control unit through digital signal lines. The control unit is connected to the communication unit through a serial communication interface.

3. The offshore wind turbine fault early warning and monitoring device according to claim 2, characterized in that, The power supply unit is connected to the vibration sensor (5), temperature sensor (6), tilt sensor (7), control unit and communication unit.

4. The offshore wind turbine fault early warning and monitoring device according to claim 3, characterized in that, A moving device (9) is provided on the column (1). The moving device (9) includes a circular piece (91) fixedly connected between the column (1) and the wind turbine. A rectangular strip (92) is fixedly connected from the bottom of the circular piece (91) along the column (1). A slot (97) is provided on the rectangular strip (92). The slot (97) is slidably connected to a moving block (98). The moving block (98) is connected to the control box (8).

5. The offshore wind turbine fault early warning and monitoring device according to claim 4, characterized in that, The rectangular strip (92) has multiple sets of threaded holes (94) on its surface. The top of the control box (8) is fixedly connected to a connecting frame (93) by fastening bolts. Two screws (95) are symmetrically arranged on the surface of the connecting frame (93), and the screws (95) penetrate the connecting frame (93) to the inside of the threaded holes (94). The screws (95) are threadedly connected to the threaded holes (94).

6. The offshore wind turbine fault early warning and monitoring device according to claim 5, characterized in that, The screw (95) is fixedly connected to a rotating block (96) at one end near the connecting frame (93), and the rotating block (96) is in the shape of a plum blossom.

7. The offshore wind turbine fault early warning and monitoring device according to claim 1, characterized in that, The control box (8) includes a cabinet (81) and a cabinet door (82). The cabinet door (82) is rotatably connected to the inner wall of one side of the cabinet (81). A waterproof strip (83) is fixedly connected at the junction of the cabinet door (82) and the cabinet (81). Heat dissipation holes (84) are provided on both sides of the cabinet (81) located on the cabinet door (82).

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