Flexible support structure, operation monitoring methods, systems and wind turbine units

Abstract

This invention provides an elastic support mechanism, an operation monitoring method, a system, and a wind turbine, belonging to the field of equipment condition monitoring technology. It includes: a first mechanism and a second mechanism, mounted on a frame and located on both sides of a transmission device. The first mechanism is connected to the first torque arm of the transmission device, and the second mechanism is connected to the second torque arm of the gearbox. Both the first and second mechanisms include: a support frame composed of a vertical beam, an upper support beam, and a lower support beam, with the upper support beam directly above the lower support beam. The first and second torque arms of the transmission device are respectively connected to the upper support beam via an upper elastic body and to the lower support beam via a lower elastic body; at least two elastic adjustment mechanisms, with each lower support beam connected to the frame via an elastic adjustment mechanism for adjusting the compression of the elastic body. This invention has a simple structure, can reduce the failure of the elastic support, and ensure the operational safety of the transmission device.

Description

Technical Field

[0001] This invention relates to the field of equipment condition monitoring technology, specifically to an elastic support mechanism, an operation monitoring method for an elastic support mechanism, an operation monitoring system for an elastic support mechanism, and a wind turbine. Background Technology

[0002] With the continuous increase in installed wind power capacity and the extension of wind turbine operating time, vibration-related problems are becoming increasingly prominent. A wind turbine is an extremely large and complex system with a wide range of vibration sources, including aerodynamic, mechanical, electromagnetic, and various coupled excitations. As a crucial component of the wind turbine, elastic supports play a vital role in the transmission, isolation, and absorption of vibration energy throughout the system.

[0003] To reduce the impact of gearbox housing vibration on the main frame and the entire drivetrain, elastic supports are typically installed between the housing and the main frame. This not only isolates the transmission of vibration energy between the two but also attenuates the vibration of the housing itself through appropriate damping. Therefore, the gearbox elastic support has a significant impact on the vibration characteristics of the wind turbine drivetrain, and its reliable and stable operation is crucial for the vibration control of the gearbox and drivetrain. However, with the increase in unit capacity and increasingly severe load conditions, the requirements for elastic supports are becoming more stringent, and the failure rate of elastic supports is also increasing. Summary of the Invention

[0004] The purpose of this invention is to provide a flexible support mechanism, operation monitoring method, system, and wind turbine to solve the problems mentioned above, which are that as the capacity of the turbine increases, the load conditions become more severe, the requirements for flexible support become higher, and the failures of flexible support become more frequent.

[0005] To achieve the above objectives, embodiments of the present invention provide an elastic support mechanism for reducing vibration between a transmission device and a frame. The transmission device has a first torque arm and a second torque arm. The elastic support mechanism includes:

[0006] A first mechanism and a second mechanism are mounted on the frame and located on both sides of the transmission device. The first mechanism is connected to the first torque arm of the transmission device, and the second mechanism is connected to the second torque arm of the transmission device. Both the first mechanism and the second mechanism include:

[0007] The support frame is detachably mounted on the frame by a fixing mechanism. The support frame includes a vertical beam, an upper support beam and a lower support beam mounted on the vertical beam, and is mounted on the frame. The upper support beam is located directly above the lower support beam.

[0008] The upper elastic body and the lower elastic body, the first torque arm and the second torque arm of the transmission device are respectively connected to the corresponding upper support beam through the corresponding upper elastic body, and respectively connected to the corresponding lower support beam through the corresponding lower elastic body;

[0009] The elastic adjustment mechanism is located between the lower support beam and the frame. It is used to adjust the height of the support frame relative to the frame when the support frame and the frame are in a disassembled state, thereby adjusting the compression of the upper and lower elastic bodies.

[0010] Optionally, the elastic adjustment mechanism includes:

[0011] The lifting mechanism is used to adjust the height of the support frame relative to the frame when the support frame is disassembled from the frame.

[0012] An elastic gasket is provided between the lower support beam and the frame.

[0013] Optionally, both the first torque arm and the second torque arm are equipped with displacement sensors to detect the displacement amount and direction of the first torque arm and the second torque arm.

[0014] Secondly, embodiments of the present invention also provide a method for monitoring the operation of an elastic support mechanism, the elastic support mechanism comprising: an upper elastic body and a lower elastic body, used to reduce vibration between the transmission equipment and the frame, the transmission equipment having a first torque arm and a second torque arm, the method comprising:

[0015] Obtain the displacement of the first torque arm and the displacement of the second torque arm of the transmission device.

[0016] If the absolute difference between the displacement of the first torque arm and the displacement of the second torque arm is greater than the first preset threshold, then an anomaly is determined to exist.

[0017] Obtain the displacement direction of the first torque arm, the displacement direction of the second torque arm, and the operating status of the transmission equipment;

[0018] Based on the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm, the displacement direction of the first torque arm, the displacement direction of the second torque arm, and the operating status of the transmission equipment, the abnormal component is identified.

[0019] Optionally, the operating state of the transmission equipment includes: operating state and shutdown state;

[0020] Based on the difference between the absolute values ​​of the displacements of the first and second torque arms, the displacement directions of the first and second torque arms, and the operating status of the transmission equipment, the abnormal components are identified, including:

[0021] If the transmission equipment is in a stopped state, the displacement direction of the first torque arm is the same as that of the second torque arm, and the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm is greater than the second preset threshold, then it is determined that the transmission chain shaft is tilted, resulting in an abnormal compression of the elastic support mechanism.

[0022] If the transmission equipment is in a stopped state, the displacement direction of the first torque arm is opposite to that of the second torque arm, and the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm is greater than the third preset threshold, then it is determined that there is a structural abnormality in the upper elastic body and / or the lower elastic body of the elastic support mechanism.

[0023] If the transmission equipment is in operation, the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm is greater than the fourth preset threshold, and the number of occurrences within the preset time period is greater than the preset number threshold, then it is determined that there is an alignment abnormality in the transmission equipment.

[0024] Optionally, the method further includes:

[0025] If it is determined that there is an abnormal compression in the elastic support mechanism, a compression adjustment command is generated based on the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm. The compression adjustment command is used to adjust the compression of the elastic body.

[0026] If it is determined that there is a structural abnormality in the upper elastic body and / or lower elastic body of the elastic support mechanism, the abnormal elastic body shall be replaced.

[0027] If an alignment error is found in the transmission equipment, the shaft of the transmission equipment shall be aligned.

[0028] Optionally, before obtaining the displacement of the first torque arm and the displacement of the second torque arm of the transmission device, the method further includes:

[0029] The elastic support mechanism is leveled to ensure that the upper and lower elastic bodies of the elastic support mechanism have the same length.

[0030] Optionally, the method further includes:

[0031] An alarm signal is sent to the client if at least one of the following conditions exists:

[0032] The elastic support mechanism exhibits abnormal compression.

[0033] The upper and / or lower elastic bodies of the elastic support mechanism have structural abnormalities.

[0034] There is an alignment error in the transmission equipment.

[0035] Thirdly, embodiments of the present invention also provide an operation monitoring system for an elastic support mechanism, the system comprising:

[0036] The aforementioned flexible support mechanism;

[0037] The processor, connected to the elastic support mechanism, is used to execute the above-described operation monitoring method for the elastic support mechanism.

[0038] Fourthly, embodiments of the present invention also provide a wind turbine generator, including the above-mentioned elastic support mechanism and an operation monitoring system.

[0039] In this technical solution, both the first and second mechanisms are configured to include an upper support beam and a lower support beam. The first and second torque arms of the gearbox are connected to the upper support beam via an upper elastic body and to the lower support beam via a lower elastic body, respectively. At the same time, each lower support beam is connected to the frame via an elastic adjustment mechanism. The elastic adjustment mechanism is used to adjust the compression of the elastic body. The overall structure is simple, can achieve stable operation of the elastic support, reduce the failure of the elastic support, and ensure the operational safety of the transmission equipment.

[0040] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0041] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0042] Figure 1 This is a schematic diagram of the elastic support mechanism provided by the present invention;

[0043] Figure 2 This is a flowchart of the operation monitoring method for the elastic support mechanism provided by the present invention;

[0044] Figure 3 This is a flowchart of an operation monitoring method for an elastic support mechanism according to one embodiment of the present invention;

[0045] Figure 4 This is a schematic diagram of the position of the torque arm of the elastic support mechanism of the transmission device during operation provided by the present invention;

[0046] Figure 5 This is a schematic diagram of the structure where the transmission chain shaft tilts, as provided by the present invention.

[0047] Figure 6 This is a schematic diagram of the support frame provided by the present invention.

[0048] Explanation of reference numerals in the attached figures

[0049] 1-Transmission equipment; 2-Frame; 11-First torque arm;

[0050] 12 - Second torque arm; 31 - First mechanism; 32 - Second mechanism;

[0051] 101 - Displacement sensor; 301 - Support frame; 302 - Fixing mechanism;

[0052] 303 - Upper elastomer; 304 - Lower elastomer; 305 - Elastic adjustment mechanism;

[0053] 3011 - Vertical beam; 3012 - Upper support beam; 3013 - Lower support beam;

[0054] 3051 - Lifting mechanism; 3052 - Elastic gasket. Detailed Implementation

[0055] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0056] In the embodiments of the present invention, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use.

[0057] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0058] The terms "parallel" and "perpendicular" do not mean that the components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that its direction is more parallel than "perpendicular," not that the structure must be completely parallel, but that it can be slightly tilted.

[0059] The terms "horizontal," "vertical," and "sag" do not imply that a component must be absolutely horizontal, vertical, or sagging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0060] Furthermore, terms like "roughly" and "basically" are used to indicate that the content does not require absolute precision, but rather allows for a certain degree of deviation. For example, "roughly equal" does not simply mean absolute equality; in actual production and operation, achieving absolute "equality" is difficult, and a certain degree of deviation is generally present. Therefore, besides absolute equality, "roughly equal to" also includes the aforementioned situation where a certain degree of deviation exists. Using this as an example, in other cases, unless otherwise specified, terms like "roughly" and "basically" have similar meanings.

[0061] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0062] Figure 1 This is a schematic diagram of the elastic support mechanism provided by the present invention; Figure 2 This is a flowchart of the operation monitoring method for the elastic support mechanism provided by the present invention; Figure 3 This is a flowchart of an operation monitoring method for an elastic support mechanism according to one embodiment of the present invention; Figure 4 This is a schematic diagram of the position of the torque arm of the elastic support mechanism of the transmission device during operation provided by the present invention; Figure 5 This is a schematic diagram of the structure where the transmission chain shaft tilts, as provided by the present invention. Figure 6 This is a schematic diagram of the support frame provided by the present invention.

[0063] like Figure 1 and Figure 6 As shown, this embodiment provides an elastic support mechanism for reducing vibration between the transmission device 1 and the frame 2. The transmission device 1 has a first torque arm 11 and a second torque arm 12. The elastic support mechanism includes:

[0064] A first mechanism 31 and a second mechanism 32 are mounted on the frame 2 and located on both sides of the transmission device 1. The first mechanism 31 is connected to the first torque arm 11 of the transmission device 1, and the second mechanism 32 is connected to the second torque arm 12 of the transmission device 1. Both the first mechanism 31 and the second mechanism 32 include:

[0065] The support frame 301 is detachably mounted on the frame 2 via the fixing mechanism 302. The support frame 301 includes a vertical beam 3011, and an upper support beam 3012 and a lower support beam 3013 mounted on the vertical beam 3011. The upper support beam 3012 is located directly above the lower support beam 3013.

[0066] The upper elastic body 303 and the lower elastic body 304, the first torque arm 11 and the second torque arm 12 of the transmission device 1 are respectively connected to the corresponding upper support beam 3012 through the corresponding upper elastic body 303, and respectively connected to the corresponding lower support beam 3013 through the corresponding lower elastic body 304.

[0067] The elastic adjustment mechanism 305 is disposed between the lower support beam 3013 and the frame 2. It is used to adjust the height of the support frame 301 relative to the frame 2 when the support frame 301 and the frame 2 are in a disassembled state, thereby adjusting the compression of the upper elastic body 303 and the lower elastic body 304.

[0068] Specifically, in this embodiment, the transmission device 1 can be a rotating device such as a gearbox, and the elastic support mechanism is configured to include a first mechanism 31 and a second mechanism 32, which are arranged opposite to each other on both sides of the transmission device 1, so as to ensure the shock absorption effect of the transmission device 1 and improve stability; in addition, the transmission device 1 has a first torque arm 11 and a second torque arm 12, which are respectively connected to the first mechanism 31 and the second mechanism 32. The first mechanism 31 and the second mechanism 32 both include a support frame 301, which is detachably mounted on the frame 2 via a fixing mechanism 302. The support frame 301 includes a vertical beam 3011, and an upper support beam 3012 and a lower support beam 3013 mounted on the vertical beam 3011. The upper support beam 3012 is located directly above the lower support beam 3013, forming a space to accommodate an upper elastic body 303, a lower elastic body 304, a first torque arm 11, and a second torque arm 12. Meanwhile, the first torque arm 11 and the second torque arm 12 of the transmission device 1 are respectively connected to the corresponding upper support beam 3012 via the corresponding upper elastic body 303, and respectively connected to the corresponding lower support beam 3013 via the corresponding lower elastic body 304. By providing elastic bodies on both the upper and lower sides of the first torque arm 11 and the second torque arm 12, vibration displacement can be minimized to the maximum extent, further ensuring the shock absorption effect. Secondly, during the operation of the elastomer, factors such as fatigue can cause a deviation in the deformation between the upper elastomer 303 and the lower elastomer 304, resulting in an upward or downward offset of the transmission device 1 relative to the elastic support mechanism. Therefore, an elastic adjustment mechanism 305 is provided between each lower support beam 3013 and the frame 2. When the support frame 301 and the frame 2 are in a disassembled state, the height of the support frame 301 relative to the frame 2 is adjusted, thereby adjusting the compression of the upper elastomer 303 and the lower elastomer 304, so that the position of the elastic support mechanism and the transmission device 1 are matched.

[0069] Preferably, the fixing mechanism 302 is provided with multiple bolts. By loosening or tightening the bolts, the support frame 301 can be fixed and disassembled from the frame 2. Preferably, the number of bolts can be 4, 6, or 12, etc. The vertical beam 3011, the upper support beam 3012, and the lower support beam 3013 are made of a U-shaped support frame 301 or a square support frame 301, which can further ensure the structural strength.

[0070] Furthermore, the flexible adjustment mechanism 305 includes:

[0071] The lifting mechanism 3051 is used to adjust the height of the support frame 301 relative to the frame 2 when the support frame 301 is in a disassembled state from the frame 2.

[0072] An elastic gasket 3052 is disposed between the lower support beam 3013 and the frame 2.

[0073] Specifically, in this embodiment, in order to adjust the compression of the lower elastic body 304, an elastic adjustment mechanism 305 is provided. The elastic adjustment mechanism 305 includes a lifting mechanism 3051 and an elastic pad 3052. When the first torque arm 11 and the second torque arm 12 are at the same level in a static state, if the length of the upper elastic body 303 is less than the length of the lower elastic body 304, and the difference is less than a preset length threshold, the fixing mechanism 302 is first adjusted so that the support frame 301 is disassembled from the frame 2. Simultaneously, the lifting mechanism 3051 is controlled to increase its lifting height. When the upper elastic body 303 and the lower elastic body 304 are at equal heights, the thickness of the elastic pad 3052 is increased between the lower support beam 3013 and the frame 2, so that the thickness of the elastic pad 3052 matches the height of the upper elastic body 303 and the lower elastic body 304. Then, the mechanism is controlled... The lifting mechanism 3051 lowers the lifting height while adjusting the fixing mechanism 302 to ensure a tight connection between the support frame 301 and the frame 2. When the length of the upper elastic body 303 is greater than the length of the lower elastic body 304, and the difference is less than a preset length threshold, the fixing mechanism 302 is first adjusted to disassemble the support frame 301 from the frame 2. Simultaneously, the lifting mechanism 3051 is controlled to operate, thereby lowering the lifting height of the lifting mechanism 3051. At the same time, the thickness of the elastic pad 3052 between the lower support beam 3013 and the frame 2 is reduced. After the height between the support frame 301 and the frame 2 is lowered to the required height, the thickness of the elastic pad 3052 is matched equally with the upper elastic body 303 and the lower elastic body 304. Then, the lifting mechanism 3051 is controlled to lower the lifting height while adjusting the fixing mechanism 302 to ensure a tight connection between the support frame 301 and the frame 2.

[0074] This method allows for convenient height adjustment, enables leveling of the elastic support mechanism, and facilitates timely adjustments when there are abnormalities in the compression of the elastic support mechanism. It also ensures structural stability and improves safety.

[0075] Furthermore, the lifting mechanism 3051 includes: a plurality of hydraulic cylinders, electric cylinders, pneumatic cylinders or adjusting bolts arranged symmetrically.

[0076] Specifically, in this embodiment, multiple hydraulic cylinders, electric cylinders, pneumatic cylinders, or adjusting bolts are symmetrically arranged between the support frame 301 and the frame 2. By adjusting the lifting height, the height of the support frame 301 can be adjusted, and the stability is high during the adjustment process. Preferably, four cylinders are arranged in a rectangular structure.

[0077] Furthermore, both the first torque arm 11 and the second torque arm 12 are equipped with displacement sensors 101 to detect the displacement amount and displacement direction of the first torque arm 11 and the second torque arm 12.

[0078] Specifically, in this embodiment, a displacement sensor 101 is provided on the first torque arm 11 and the second torque arm 12, which can detect the amount of displacement between the first torque arm 11 and the second torque arm 12. By the deviation of the displacement, it can be determined whether the first torque arm 11 and the second torque arm 12 are horizontal, thereby achieving an accurate characterization of the state of the elastic support mechanism.

[0079] Furthermore, timely detection and handling of elastic support failures are crucial for stable unit operation. Currently, the industry primarily determines the failure mode by periodically inspecting the appearance of the elastic support on the tower, which requires high maintenance standards and incurs high costs. While displacement sensors on the gearbox are currently used to detect gearbox torque arm displacement, this method suffers from inaccurate monitoring, imprecise fault classification, and a lack of intelligence. Therefore, this embodiment provides a method for monitoring the operation of an elastic support mechanism. The elastic support mechanism includes an upper elastic body and a lower elastic body to reduce vibration between the transmission equipment and the frame. The transmission equipment has a first torque arm and a second torque arm. Please refer to [reference needed]. Figure 2 As shown, the method includes:

[0080] Obtain the displacement of the first torque arm and the displacement of the second torque arm of the transmission device.

[0081] If the absolute difference between the displacement of the first torque arm and the displacement of the second torque arm is greater than the first preset threshold, then an anomaly is determined to exist.

[0082] Obtain the displacement direction of the first torque arm, the displacement direction of the second torque arm, and the operating status of the transmission equipment;

[0083] Based on the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm, the displacement direction of the first torque arm, the displacement direction of the second torque arm, and the operating status of the transmission equipment, the abnormal component is identified.

[0084] Specifically, in this embodiment, under normal circumstances, the compression of the first and second torque arms of the transmission device by the first and second elastic bodies is consistent, meaning they experience the same force. At this time, the displacement sensors installed on the first and second torque arms are at a state of 0, representing the initial position. During monitoring, the displacement of the first and second torque arms of the transmission device is first acquired. If the absolute difference between the displacements of the first and second torque arms is greater than a first preset threshold, it indicates an abnormality in the operation of the elastic support mechanism. Further identification of the abnormal component is necessary for corresponding inspection and repair. Therefore, after confirming an abnormality, the displacement directions of the first and second torque arms and the operating status of the transmission device are acquired. Finally, based on the difference in the absolute values ​​of the displacements of the first and second torque arms, the displacement directions of the first and second torque arms, and the operating status of the transmission device, the abnormal component is identified. This method reduces data processing volume and effectively ensures the accuracy of abnormality detection.

[0085] Furthermore, the operating state of the transmission equipment includes: operating state and shutdown state;

[0086] Based on the difference between the absolute values ​​of the displacements of the first and second torque arms, the displacement directions of the first and second torque arms, and the operating status of the transmission equipment, the abnormal components are identified, including:

[0087] If the transmission equipment is in a stopped state, the displacement direction of the first torque arm is the same as that of the second torque arm, and the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm is greater than the second preset threshold, then it is determined that the transmission chain shaft is tilted, resulting in an abnormal compression of the elastic support mechanism.

[0088] If the transmission equipment is in a stopped state, the displacement direction of the first torque arm is opposite to that of the second torque arm, and the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm is greater than the third preset threshold, then it is determined that there is a structural abnormality in the upper elastic body and / or the lower elastic body of the elastic support mechanism.

[0089] If the transmission equipment is in operation, the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm is greater than the fourth preset threshold, and the number of occurrences within the preset time period is greater than the preset number threshold, then it is determined that there is an alignment abnormality in the transmission equipment.

[0090] Specifically, in this embodiment, since the state of the elastic support mechanism differs when the transmission equipment is in operation and when it is stopped, during the judgment process, the accuracy of the judgment result can be further ensured by combining the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm, the displacement direction of the first torque arm, the displacement direction of the second torque arm, and the operating state of the transmission equipment. This enables more precise fault judgment and maintenance, and effectively avoids misjudgment.

[0091] In one specific implementation, such as Figure 4 As shown, when the transmission equipment is running, the torque arm will twist in the direction of operation. At this time, the displacement sensors S1 and S2 of the first and second torque arms will display values. However, the difference between the two is small. If ||S1|-|S2|| is greater than the first preset threshold K1, it indicates an abnormal situation, and the following judgment needs to be made:

[0092] In a static state (when the transmission equipment is stopped), S1 and S2 have the same direction (either both positive or both negative) and their absolute values ​​are greater than the second preset threshold K2. Figure 5 The state shown indicates that the transmission chain shaft may have tilted to a certain extent, and the elastic support mechanism has abnormal compression. The elastic adjustment mechanism needs to be adjusted so that the heights of the upper and lower elastic bodies connected to the first torque arm are equal, and the heights of the upper and lower elastic bodies connected to the second torque arm are equal, restoring the initial elastic body state of the upper and lower elastic bodies. Fault 1 often occurs in a short period of operation.

[0093] If, in a static state (transmission equipment stopped), S1 and S2 are in opposite directions, and ||S1| - |S2|| is greater than the third preset threshold K3, then one or more of the elastic bodies connected to the first torque arm (upper and lower) and the second torque arm (upper and lower) may be damaged, resulting in a large difference in stiffness and making it impossible to maintain balance in a static state. In this case, on-site inspection is required. Fault 2 often occurs under conditions of long operating time or abnormal operating conditions.

[0094] If it is not a case of fault 1 or fault 2, and in the running state (transmission equipment stopped), ||S1|-|S2|| is greater than the fourth preset threshold K4, and occurs multiple times within the preset time period, it may be that the gearbox shaft or main shaft is not properly aligned during installation, and it is necessary to re-align the shaft.

[0095] The aforementioned limits K1, K2, K3, and K4 can be determined based on the model, the structure of each related component, and the operating data. They can be the same or different. At the same time, the above three alarms and three faults are typical cases, and there may be superposition or other types. More alarm and fault judgment conditions can be obtained through data analysis.

[0096] Furthermore, the method also includes:

[0097] If it is determined that there is an abnormal compression in the elastic support mechanism, a compression adjustment command is generated based on the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm. The compression adjustment command is used to adjust the compression of the elastic body.

[0098] If it is determined that there is a structural abnormality in the upper elastic body and / or lower elastic body of the elastic support mechanism, the abnormal elastic body shall be replaced.

[0099] If an alignment error is found in the transmission equipment, the shaft of the transmission equipment shall be aligned.

[0100] Specifically, in this embodiment, when it is determined through the above scheme that there is an abnormal compression of the elastic support mechanism, there is no structural damage to the elastic support mechanism, only a positional deviation, which does not affect the operation of the elastic support mechanism, but the vibration reduction effect is not in the best state. Therefore, by adjusting the position of the lower support beam, the compression of the elastic body is adjusted so that the transmission device is in the optimal position, thereby ensuring the vibration reduction effect.

[0101] If it is determined that there is a structural abnormality in the upper elastic body and / or lower elastic body of the elastic support mechanism, the abnormal elastic body shall be replaced so that the elastic body can maintain elastic balance and achieve effective vibration reduction of the transmission equipment.

[0102] If an alignment abnormality is found in the transmission equipment, it may be that the gearbox shaft or main shaft was not properly aligned during installation. In this case, the transmission equipment needs to be realigned to ensure its normal operation and reduce safety hazards.

[0103] Furthermore, before obtaining the displacement of the first torque arm and the displacement of the second torque arm of the transmission device, the method further includes:

[0104] The elastic support mechanism is leveled to ensure that the upper and lower elastic bodies of the elastic support mechanism have the same length.

[0105] Specifically, in this embodiment, during the operation of the transmission equipment, the vibration of the transmission equipment itself causes the upper and lower elastic bodies in the elastic support mechanism to undergo frequent compression and elongation. Therefore, during long-term operation, the elastic coefficients of the upper and lower elastic bodies will change, and there will be a slight difference in the length of the upper and lower elastic bodies (different compression amounts under the same pressure). However, these differences are all within the allowable error range of the elastic support mechanism (e.g., the difference is less than a preset difference threshold, which is a small value close to 0). In order to reduce the impact of the slight length changes on the data collected during subsequent monitoring and improve the accuracy of monitoring, the elastic support mechanism is leveled to ensure that the lengths (compression amounts) of the upper and lower elastic bodies are the same under the same pressure.

[0106] Furthermore, the method also includes:

[0107] An alarm signal is sent to the client if at least one of the following conditions exists:

[0108] The elastic support mechanism exhibits abnormal compression.

[0109] The upper and / or lower elastic bodies of the elastic support mechanism have structural abnormalities.

[0110] There is an alignment error in the transmission equipment.

[0111] Specifically, in this embodiment, after accurately identifying the abnormal component, since the mechanisms underlying the abnormality differ, corresponding measures need to be taken for repair. Therefore, after identifying the abnormal component, an alarm signal is sent to the client to prompt timely repair and ensure operational safety. The client can be a mobile phone, tablet, or computer, etc.

[0112] This embodiment also provides an operation monitoring system for an elastic support mechanism, the system comprising:

[0113] The aforementioned flexible support mechanism;

[0114] The processor, connected to the elastic support mechanism, is used to execute the above-described operation monitoring method for the elastic support mechanism.

[0115] Specifically, in this embodiment, the processor is connected to the transmission device 1 and the displacement sensors installed on the first torque arm 11 and the second torque arm 12. By receiving the displacement amount of the first torque arm, the displacement amount of the second torque arm, the displacement direction of the first torque arm, the displacement direction of the second torque arm, and the operating status of the transmission device, the processor can monitor the operation of the elastic support mechanism and also monitor the status of the transmission device.

[0116] This embodiment also provides a wind turbine generator, including the above-mentioned elastic support mechanism and its operation monitoring system.

[0117] Specifically, in this embodiment, the remaining structures of the wind turbine, except for the aforementioned elastic support mechanism operation monitoring system, are existing technologies known to those skilled in the art and will not be described in detail here. Furthermore, in this embodiment, the transmission device is the gearbox of the wind turbine, which has a first torque arm and a second torque arm. The elastic support mechanism is used to reduce vibration between the gearbox and the wind turbine frame. Through the above system, the status monitoring of the wind turbine's elastic support mechanism and gearbox can be achieved, ensuring the safe operation of the wind turbine.

[0118] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0119] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a microcontroller, chip, or processor to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0120] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details described above. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0121] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A flexible support mechanism, characterized in that, For reducing vibration between the transmission device (1) and the frame (2), the transmission device (1) has a first torque arm (11) and a second torque arm (12), and the elastic support mechanism includes: The first mechanism (31) and the second mechanism (32) are mounted on the frame (2) and located on both sides of the transmission device (1). The first mechanism (31) is connected to the first torque arm (11) of the transmission device (1), and the second mechanism (32) is connected to the second torque arm (12) of the transmission device (1). Both the first mechanism (31) and the second mechanism (32) include: The support frame (301) is detachably mounted on the frame (2) by a fixing mechanism (302). The support frame (301) includes a vertical beam (3011), and an upper support beam (3012) and a lower support beam (3013) mounted on the vertical beam (3011). The upper support beam (3012) is located directly above the lower support beam (3013). The upper elastic body (303) and the lower elastic body (304), the first torque arm (11) and the second torque arm (12) of the transmission device (1) are respectively connected to the corresponding upper support beam (3012) through the corresponding upper elastic body (303), and respectively connected to the corresponding lower support beam (3013) through the corresponding lower elastic body (304). The elastic adjustment mechanism (305) is located between the lower support beam (3013) and the frame (2) to adjust the height of the support frame (301) relative to the frame (2) when the support frame (301) and the frame (2) are in a disassembled state, thereby adjusting the compression of the upper elastic body (303) and the lower elastic body (304).

2. The elastic support mechanism according to claim 1, characterized in that, The elastic adjustment mechanism (305) includes: The lifting mechanism (3051) is used to adjust the height of the support frame (301) relative to the frame (2) when the support frame (301) is in a disassembled state from the frame (2); An elastic pad (3052) is disposed between the lower support beam (3013) and the frame (2).

3. The elastic support mechanism according to claim 1, characterized in that, Both the first torque arm (11) and the second torque arm (12) are equipped with displacement sensors (101) to detect the displacement amount and displacement direction of the first torque arm (11) and the second torque arm (12).

4. A method for monitoring the operation of a flexible support mechanism, the flexible support mechanism comprising: An upper elastic body and a lower elastic body are used to reduce vibration between the transmission device and the frame, the transmission device having a first torque arm and a second torque arm, characterized in that the method includes: Obtain the displacement of the first torque arm and the displacement of the second torque arm of the transmission device. If the absolute difference between the displacement of the first torque arm and the displacement of the second torque arm is greater than the first preset threshold, then an anomaly is determined to exist. Obtain the displacement direction of the first torque arm, the displacement direction of the second torque arm, and the operating status of the transmission equipment; Based on the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm, the displacement direction of the first torque arm, the displacement direction of the second torque arm, and the operating status of the transmission equipment, the abnormal component is identified.

5. The method for monitoring the operation of the elastic support mechanism according to claim 4, characterized in that, The operating status of the transmission equipment includes: operating status and shutdown status; Based on the difference between the absolute values ​​of the displacements of the first and second torque arms, the displacement directions of the first and second torque arms, and the operating status of the transmission equipment, the abnormal components are identified, including: If the transmission equipment is in a stopped state, the displacement direction of the first torque arm is the same as that of the second torque arm, and the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm is greater than the second preset threshold, then it is determined that the elastic support mechanism has an abnormal compression. If the transmission equipment is in a stopped state, the displacement direction of the first torque arm is opposite to that of the second torque arm, and the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm is greater than the third preset threshold, then it is determined that there is a structural abnormality in the upper elastic body and / or the lower elastic body of the elastic support mechanism. If the transmission equipment is in operation, the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm is greater than the fourth preset threshold, and the number of occurrences within the preset time period is greater than the preset number threshold, then it is determined that there is an alignment abnormality in the transmission equipment.

6. The method for monitoring the operation of the elastic support mechanism according to claim 5, characterized in that, The method further includes: If it is determined that there is an abnormal compression in the elastic support mechanism, a compression adjustment command is generated based on the difference between the absolute values ​​of the displacement of the first torque arm and the displacement of the second torque arm. The compression adjustment command is used to adjust the compression of the elastic body. If it is determined that there is a structural abnormality in the upper elastic body and / or lower elastic body of the elastic support mechanism, the abnormal elastic body shall be replaced. If an alignment error is found in the transmission equipment, the shaft of the transmission equipment shall be aligned.

7. The method for monitoring the operation of the elastic support mechanism according to claim 4, characterized in that, Before obtaining the displacement of the first torque arm and the displacement of the second torque arm of the transmission device, the method further includes: The elastic support mechanism is leveled to ensure that the upper and lower elastic bodies of the elastic support mechanism have the same length.

8. The method for monitoring the operation of the elastic support mechanism according to claim 5, characterized in that, The method further includes: An alarm signal is sent to the client if at least one of the following conditions exists: The elastic support mechanism exhibits abnormal compression. The upper and / or lower elastic bodies of the elastic support mechanism have structural abnormalities. There is an alignment error in the transmission equipment.

9. A monitoring system for the operation of an elastic support mechanism, characterized in that, The system includes: The elastic support mechanism according to any one of claims 1-3; A processor, connected to the elastic support mechanism, is used to execute the operation monitoring method of the elastic support mechanism as described in any one of claims 4-8.

10. A wind turbine generator set, characterized in that, The system includes the operation monitoring system of the elastic support mechanism as described in claim 9.

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