Elastic supporting mechanism, operation monitoring method and system and wind turbine generator

Abstract

The invention provides an elastic supporting mechanism, an operation monitoring method and system and a wind turbine generator, and belongs to the technical field of equipment state monitoring. Comprising a first mechanism and a second mechanism which are arranged on a rack and located on the two sides of transmission equipment, the first mechanism is connected with a first torque arm of the transmission equipment, the second mechanism is connected with a second torque arm of a gearbox, and each of the first mechanism and the second mechanism comprises a supporting frame composed of a vertical beam, an upper supporting cross beam and a lower supporting cross beam; the upper supporting cross beam is located over the lower supporting cross beam, and a first torque arm and a second torque arm of the transmission equipment are connected with the upper supporting cross beam through upper elastic bodies and connected with the lower supporting cross beam through lower elastic bodies. And each lower supporting cross beam is connected with the rack through one elastic adjusting mechanism, and the elastic adjusting mechanisms are used for adjusting the compression amount of the elastic bodies. The elastic support is simple in structure, faults of the elastic support can be reduced, and the operation safety of transmission equipment is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment status monitoring, and in particular to an elastic support mechanism, an elastic support mechanism operation monitoring method, an elastic support mechanism operation monitoring system and a wind turbine generator set. Background Art

[0002] With the continuous increase in wind power installed capacity and the extension of wind turbine operation time, vibration-related issues are becoming more and more prominent. Wind turbines are extremely large and complex systems with a wide range of vibration sources, including pneumatic, mechanical, electromagnetic and various coupled excitations. As an important component of wind turbines, elastic supports play an important role in the transmission, isolation and absorption of vibration energy of the entire system. In order to reduce the impact of the gearbox housing vibration on the main frame and the entire transmission chain, elastic supports are generally set 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 by setting appropriate damping. Therefore, the gearbox elastic support has an important influence on the vibration characteristics of the wind turbine transmission chain, and the reliable and stable operation of the elastic support is crucial to the vibration of the gearbox and transmission chain. However, with the increase in unit capacity, the load conditions are becoming more and more severe, the requirements for elastic supports are becoming higher and higher, and elastic support failures are also increasing. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide an elastic support mechanism, an operation monitoring method, a system and a wind turbine generator set to solve the above-mentioned problem that as the capacity of the unit increases, the load conditions become more and more severe, the requirements for elastic support become higher and higher, and elastic support failures become more and more frequent.

[0004] In order to achieve the above object, an embodiment of the present invention provides an elastic support mechanism for reducing vibration between a transmission device and a frame, wherein the transmission device has a first torque arm and a second torque arm, and the elastic support mechanism includes: The first mechanism and the second mechanism are arranged 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; the first mechanism and the second mechanism both include: A support frame is detachably mounted on the frame through a fixing mechanism, the support frame comprises a vertical beam, and an upper support beam and a lower support beam mounted on the vertical beam, and is mounted on the frame, wherein the upper support beam is directly above the lower support beam; 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 are respectively connected to the corresponding lower support beam through the corresponding lower elastic body; The elastic adjustment mechanism is arranged between the lower support beam and the frame, and 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 amount of the upper elastic body and the lower elastic body.

[0005] Optionally, the elastic adjustment mechanism includes: A lifting mechanism, 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; The elastic gasket is arranged between the lower supporting cross beam and the frame.

[0006] Optionally, the first torque arm and the second torque arm are both provided with displacement sensors for detecting the displacement amount and displacement direction of the first torque arm and the second torque arm.

[0007] In a second aspect, an embodiment of the present invention further provides an operation monitoring method of an elastic support mechanism, wherein the elastic support mechanism comprises: an upper elastic body and a lower elastic body, which are used to reduce vibration between a transmission device and a frame, wherein the transmission device has a first torque arm and a second torque arm, and the method comprises: Obtaining a displacement of a first torque arm and a displacement of a second torque arm of a transmission device; If 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 a first preset threshold, it is determined that an abnormality exists; Obtaining the displacement direction of the first torque arm, the displacement direction of the second torque arm and the operating state of the transmission device; 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 state of the transmission device, an abnormal component is determined.

[0008] Optionally, the operating state of the transmission equipment includes: operating state and shutdown state; 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 state of the transmission device, determining the abnormal component includes: If the transmission device is in a stopped state, the displacement direction of the first torque arm is the same as the displacement direction 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 a second preset threshold, it is determined that the axis of the transmission chain is tilted, resulting in abnormal compression of the elastic support mechanism; If the transmission device is in a stopped state, the displacement direction of the first torque arm is opposite to the displacement direction 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 a third preset threshold, it is determined that the upper elastic body and / or the lower elastic body of the elastic support mechanism has a structural abnormality; If the transmission device 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 a fourth preset threshold, and the number of occurrences within a preset time period is greater than a preset number threshold, it is determined that the transmission device has a centering abnormality.

[0009] Optionally, the method further includes: When it is determined that the elastic support mechanism has abnormal compression, a compression adjustment instruction 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, wherein the compression adjustment instruction is used to adjust the compression of the elastic body; When it is determined that the upper elastic body and / or the lower elastic body of the elastic support mechanism has structural abnormalities, the elastic body with the abnormalities is replaced; When it is determined that the transmission equipment has misalignment, perform alignment operations on the axis of the transmission equipment.

[0010] 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: The elastic supporting mechanism is leveled so that the lengths of the upper elastic body and the lower elastic body of the elastic supporting mechanism are the same.

[0011] Optionally, the method further includes: When at least one of the following conditions occurs, an alarm signal is sent to the client: The elastic support mechanism has abnormal compression; The upper elastic body and / or the lower elastic body of the elastic support mechanism have structural abnormalities; There is an alignment anomaly in the transmission equipment.

[0012] In a third aspect, an embodiment of the present invention further provides an operation monitoring system of an elastic support mechanism, the system comprising: The elastic support mechanism mentioned above; A processor is connected to the elastic support mechanism and is used to execute the above-mentioned operation monitoring method of the elastic support mechanism.

[0013] In a fourth aspect, an embodiment of the present invention further provides a wind turbine generator set, including an operation monitoring system of the elastic support mechanism described above.

[0014] In the present technical solution, the first mechanism and the second mechanism are both configured to include an upper supporting beam and a lower supporting beam, and the first torque arm and the second torque arm of the gear box are respectively connected to the upper supporting beam through an upper elastic body, and are respectively connected to the lower supporting beam through a lower elastic body. At the same time, each lower supporting beam is connected to the frame through an elastic adjustment mechanism, and the elastic adjustment mechanism is used to adjust the compression amount of the elastic body. The overall structure is simple, can achieve stable operation of the elastic support, reduce failures of the elastic support, and ensure the operating safety of the transmission equipment.

[0015] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of the elastic support mechanism provided by the present invention; Figure 2 is a flow chart of the operation monitoring method of the elastic support mechanism provided by the present invention; Figure 3 is a flowchart of an operation monitoring method of an elastic support mechanism in an embodiment of the present invention; Figure 4 It is a schematic diagram of the position of the torque arm of the elastic support mechanism when the transmission device provided by the present invention is running; Figure 5 It is a schematic diagram of the structure in which the axis of the transmission chain provided by the present invention is tilted; Figure 6 It is a structural schematic diagram of the support frame provided by the present invention.

[0017] Description of Reference Numerals 1-transmission device; 2-frame; 11-first torque arm; 12- second torque arm; 31- first mechanism; 32- second mechanism; 101-displacement sensor; 301-support frame; 302-fixing mechanism; 303-upper elastic body; 304-lower elastic body; 305-elasticity adjustment mechanism; 3011-vertical beam; 3012-upper supporting beam; 3013-lower supporting beam; 3051-lifting mechanism; 3052-elastic gasket. DETAILED DESCRIPTION

[0018] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0019] In the embodiments of the present invention, unless otherwise specified, directional words such as "up, down, left, right" generally refer to the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the inventive product is usually placed when in use.

[0020] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0021] The terms "parallel", "vertical", etc. do not mean that the components must be absolutely parallel or vertical, but can be slightly tilted. For example, "parallel" only means that its direction is more parallel than "vertical", and does not mean that the structure must be completely parallel, but can be slightly tilted.

[0022] The terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal, vertical or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In addition, the terms "roughly" and "basically" are intended to explain that the relevant content does not require absolute precision, but can have certain deviations. For example, "roughly equal" does not only mean absolute equality. Since it is difficult to achieve absolute "equality" in actual production and operation, there are generally certain deviations. Therefore, in addition to absolute equality, "roughly equal" also includes the above-mentioned situation with certain deviations. Taking this as an example, in other cases, unless otherwise specified, the terms "roughly" and "basically" have similar meanings to the above.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Figure 1 It is a structural schematic diagram of the elastic support mechanism provided by the present invention; Figure 2 is a flow chart of the operation monitoring method of the elastic support mechanism provided by the present invention; Figure 3is a flowchart of an operation monitoring method of an elastic support mechanism in an embodiment of the present invention; Figure 4 It is a schematic diagram of the position of the torque arm of the elastic support mechanism when the transmission device provided by the present invention is running; Figure 5 It is a schematic diagram of the structure in which the axis of the transmission chain provided by the present invention is tilted; Figure 6 It is a structural schematic diagram of the support frame provided by the present invention.

[0026] like Figure 1 and Figure 6 As shown, this embodiment provides an elastic support mechanism for reducing vibration between a transmission device 1 and a frame 2, wherein 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 arranged 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. The first mechanism 31 and the second mechanism 32 both include: The support frame 301 is detachably mounted on the frame 2 through 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 arranged 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 are respectively connected to the corresponding lower support beam 3013 through the corresponding lower elastic body 304; The elastic adjustment mechanism 305 is arranged between the lower support beam 3013 and the frame 2, and 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 amount of the upper elastic body 303 and the lower elastic body 304.

[0027] Specifically, in this embodiment, the transmission device 1 can be a rotating device such as a gear box, and the elastic support mechanism is configured to include a first mechanism 31 and a second mechanism 32, and are relatively arranged on both sides of the transmission device 1, which can 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, and are respectively connected to the first mechanism 31 and the second mechanism 32. Among them, the first mechanism 31 and the second mechanism 32 both include: a support frame 301, which is detachably arranged on the frame 2 through a fixing mechanism 302; the support frame 301 includes: a vertical beam 3011, and an upper supporting beam 3012 and a lower supporting beam 3013 arranged on the vertical beam 3011, the upper supporting beam 3012 is located directly above the lower supporting beam 3013, forming a space for accommodating an upper elastic body 303 and a lower elastic body 304, as well as a first torque arm 11 and a second torque arm 12; at the same time, the first torque arm 11 and the second torque arm 12 of the transmission device 1 are respectively connected to the corresponding upper supporting beam 3012 through the corresponding upper elastic body 303, and are respectively connected to the corresponding lower supporting beam 3013 through the corresponding lower elastic body 304. By arranging elastic bodies on the upper and lower sides of the first torque arm 11 and the second torque arm 12, the vibration displacement can be minimized to further ensure the shock absorption effect. Secondly, due to the influence of factors such as fatigue during the working process of the elastomer, the deformation between the upper elastomer 303 and the lower elastomer 304 will deviate, thereby causing the transmission device 1 to shift upward or downward relative to the elastic support mechanism. Therefore, an elastic adjustment mechanism 305 is set between each lower supporting 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 to adjust 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 match each other.

[0028] Preferably, the fixing mechanism 302 is configured as a plurality of bolts, and the fixing and disassembly between the support frame 301 and the rack 2 can be achieved by loosening or tightening the bolts. Preferably, the number of the bolts can be 4, 6 or 12, etc. The vertical beam 3011, the upper support beam 3012 and the lower support beam 3013 are formed as a U-shaped support frame 301 or a square support frame 301, which can further ensure the structural strength.

[0029] Further, 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 and the frame 2 are in a disassembled state; The elastic gasket 3052 is arranged between the lower supporting beam 3013 and the frame 2.

[0030] Specifically, in the present embodiment, in order to adjust the compression amount of the lower elastic body 304, an elastic adjustment mechanism 305 is provided, and the elastic adjustment mechanism 305 includes a lifting mechanism 3051 and an elastic gasket 3052; when the first torque arm 11 and the second torque arm 12 are at the same level in a stationary 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 and the frame 2 are in a disassembled state, and at the same time, the lifting mechanism 3051 is controlled to work, thereby increasing the lifting height of the lifting mechanism 3051, and when the upper elastic body 303 and the lower elastic body 304 are equal, the thickness of the elastic gasket 3052 is increased between the lower support beam 3013 and the frame 2, so that the thickness of the elastic gasket 3052 matches the equal height of the upper elastic body 303 and the lower elastic body 304, and then the control The lifting mechanism 3051 lowers the lifting height and adjusts the fixing mechanism 302 at the same time, so that the support frame 301 and the frame 2 are in a fastened connection state; 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 the preset length threshold, the fixing mechanism 302 is first adjusted to make the support frame 301 and the frame 2 in a disassembled state, and the lifting mechanism 3051 is controlled to work at the same time, thereby reducing the lifting height of the lifting mechanism 3051, and synchronously reducing the thickness of the elastic gasket 3052 between the lower supporting beam 3013 and the frame 2. After the height between the support frame 301 and the frame 2 is lowered to the required height, the thickness of the elastic gasket 3052 matches the equal height of the upper elastic body 303 and the lower elastic body 304, and then the lifting mechanism 3051 is controlled to reduce the lifting height, and the fixing mechanism 302 is adjusted at the same time, so that the support frame 301 and the frame 2 are in a fastened connection state.

[0031] By adopting this method, the height can be adjusted conveniently, the elastic support mechanism can be leveled, and timely adjustments can be made when the elastic support mechanism has abnormal compression, and the stability of the structure can be ensured, thereby improving safety.

[0032] Furthermore, the lifting mechanism 3051 includes: a plurality of symmetrically arranged hydraulic cylinders, electric cylinders, pneumatic cylinders or adjusting bolts.

[0033] Specifically, in this embodiment, a plurality of hydraulic cylinders, electric cylinders, gas cylinders or adjusting bolts are symmetrically arranged between the support frame 301 and the frame 2, and the height of the support frame 301 is adjusted by adjusting the lifting height, and the stability is high during the adjustment process. Preferably, four are arranged and distributed in a rectangular structure.

[0034] Furthermore, the first torque arm 11 and the second torque arm 12 are both provided with a displacement sensor 101 for detecting the displacement amount and displacement direction of the first torque arm 11 and the second torque arm 12 .

[0035] 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 displacement between the first torque arm 11 and the second torque arm 12. Through 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 accurate characterization of the state of the elastic support mechanism.

[0036] In addition, when elastic support fails, timely detection and timely handling are very important for the stable operation of the unit. At present, the industry mainly determines the fault form by regularly going up the tower to check the appearance of the elastic support, which has high maintenance requirements and high maintenance costs. At present, a displacement sensor is also installed on the gearbox to detect and judge the displacement of the gearbox torque arm, but there are problems such as inaccurate monitoring, unclear fault classification, and lack of intelligence. Therefore, this embodiment provides an operation monitoring method for an elastic support mechanism, the elastic support mechanism includes: an upper elastic body and a lower elastic body, which are used to reduce the vibration between the transmission equipment and the frame, and the transmission equipment has a first torque arm and a second torque arm, please refer to Figure 2 As shown, the method includes: Obtaining a displacement of a first torque arm and a displacement of a second torque arm of a transmission device; If 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 a first preset threshold, it is determined that an abnormality exists; Obtaining the displacement direction of the first torque arm, the displacement direction of the second torque arm and the operating state of the transmission device; 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 state of the transmission device, an abnormal component is determined.

[0037] Specifically, in this embodiment, under normal circumstances, the compression amounts of the first and second elastic bodies on the first and second torque arms of the transmission device are consistent, that is, the forces are the same. At this time, the displacement sensors installed on the first and second torque arms are in the state of 0, which is the initial position. During monitoring, the displacement of the first and second torque arms of the transmission device is first obtained. If the difference between the absolute values ​​of the displacement of the first and second torque arms is greater than the first preset threshold, it means that the elastic support mechanism is abnormal at this time, and it is necessary to further determine the abnormal part in order to perform corresponding inspection and maintenance. Therefore, when it is determined that there is an abnormality, the displacement direction of the first and second torque arms and the operating state of the transmission device are obtained; finally, based on the difference between the absolute values ​​of the displacement of the first and second torque arms, the displacement direction of the first and second torque arms, and the operating state of the transmission device, the abnormal component is determined. In this way, the amount of data processing can be reduced, and the accuracy of abnormal determination can be effectively guaranteed.

[0038] Further, the transmission equipment operating state includes: operating state and shutdown state; 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 state of the transmission device, determining the abnormal component includes: If the transmission device is in a stopped state, the displacement direction of the first torque arm is the same as the displacement direction 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 a second preset threshold, it is determined that the axis of the transmission chain is tilted, resulting in abnormal compression of the elastic support mechanism; If the transmission device is in a stopped state, the displacement direction of the first torque arm is opposite to the displacement direction 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 a third preset threshold, it is determined that the upper elastic body and / or the lower elastic body of the elastic support mechanism has a structural abnormality; If the transmission device 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 a fourth preset threshold, and the number of occurrences within a preset time period is greater than a preset number threshold, it is determined that the transmission device has a centering abnormality.

[0039] Specifically, in this embodiment, since the states of the elastic support mechanism are different when the transmission device is in operation and in shutdown, during the judgment process, 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 state of the transmission device, the accuracy of the judgment result can be further guaranteed, more precise fault judgment and maintenance can be achieved, and misjudgment can be effectively avoided.

[0040] In a specific embodiment, Figure 4 As shown, when the transmission device is running, the torque arm will twist along with the running direction. At this time, the first torque arm and the second torque arm displacement sensors S1 and S2 will have values, but the difference between the two is small. If ||S1|-|S2|| is greater than the first preset threshold value K1, it means that there is an abnormal situation, and it is necessary to judge according to the following situations: For example, in a stationary state (transmission equipment is stopped), S1 and S2 have the same direction, that is, positive or negative, and their absolute values ​​are greater than the second preset threshold value K2. Figure 5 The state shown in the figure indicates that the transmission chain axis may have a certain tilt and the elastic support mechanism has abnormal compression. In this case, the elastic adjustment mechanism needs to be adjusted to make the heights of the upper and lower elastic bodies connected to the first torque arm equal, as well as the heights of the upper and lower elastic bodies connected to the second torque arm equal, and restore the initial elastic state of the upper and lower elastic bodies. Fault 1 often occurs during a short period of operation.

[0041] If in a stationary state (transmission equipment is shut down), S1 and S2 are in opposite directions, and ||S1|-|S2|| is greater than the third preset threshold value K3, it is possible that one or more of the upper and lower elastic bodies connected to the first torque arm and the upper and lower elastic bodies connected to the second torque arm are damaged, resulting in a large difference in stiffness, making it impossible to maintain balance in a stationary state, and it is necessary to go on the machine for troubleshooting. Fault 2 often occurs when the running time is long or there are abnormal working conditions.

[0042] If it is not the case of fault 1 and fault 2, in the running state (transmission equipment is shut down), ||S1|-|S2|| is greater than the fourth preset threshold value K4, and occurs multiple times within the preset time period, it may be that the gearbox axis or the main shaft axis is not ideally aligned during installation, and the shaft needs to be re-aligned.

[0043] The above-mentioned limit values ​​K1, K2, K3, and K4 can be determined according to each model, the structure of each relevant component and the operating data, and can be the same or different. At the same time, the above-mentioned three alarms and three faults are typical situations, and superposition or other types may occur. More alarm judgment and fault judgment conditions can be obtained through data analysis.

[0044] Furthermore, the method further comprises: When it is determined that the elastic support mechanism has abnormal compression, a compression adjustment instruction 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, wherein the compression adjustment instruction is used to adjust the compression of the elastic body; When it is determined that the upper elastic body and / or the lower elastic body of the elastic support mechanism has structural abnormalities, the elastic body with the abnormalities is replaced; When it is determined that the transmission equipment has misalignment, perform alignment operations on the axis of the transmission equipment.

[0045] Specifically, in this embodiment, when it is determined through the above-mentioned scheme that the elastic support mechanism has abnormal compression, at this time, the elastic support mechanism does not have any structural damage, but only has a position deviation, which does not affect the operation of the elastic support mechanism, but the vibration reduction effect is not in the optimal state. Therefore, by adjusting the position of the lower supporting beam, the compression amount of the elastomer is adjusted to make the transmission equipment in the optimal position, thereby ensuring the vibration reduction effect.

[0046] When it is determined that the upper elastic body and / or the lower elastic body of the elastic support mechanism has structural abnormalities, the elastic body with the abnormality is replaced so that the elastic body can maintain elastic force balance and achieve effective vibration reduction of the transmission equipment.

[0047] If it is determined that the transmission equipment has misalignment, it is possible that the gearbox axis or the main shaft axis was not ideally aligned during installation, and the transmission equipment needs to be re-aligned to ensure the normal operation of the transmission equipment and reduce safety hazards.

[0048] 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: The elastic supporting mechanism is leveled so that the lengths of the upper elastic body and the lower elastic body of the elastic supporting mechanism are the same.

[0049] Specifically, in the present embodiment, during the operation of the transmission device, due to the vibration of the transmission device itself, the upper and lower elastic bodies in the elastic support mechanism are frequently compressed and extended. Therefore, in long-term operation, the elastic coefficients of the upper and lower elastic bodies will change, and there will be slight differences in the lengths of the upper and lower elastic bodies (different compression amounts under the same pressure), but they are all within the allowable error range of the elastic support mechanism (such as the difference is less than a preset difference threshold, and the preset difference threshold is a smaller value close to 0). In order to reduce the impact of slight length changes on the data collected during subsequent monitoring and improve the accuracy of monitoring, the elastic support mechanism is leveled so that the lengths (compression amounts) of the upper and lower elastic bodies of the elastic support mechanism are the same under the same pressure.

[0050] Furthermore, the method further comprises: When at least one of the following conditions occurs, an alarm signal is sent to the client: The elastic support mechanism has abnormal compression; The upper elastic body and / or the lower elastic body of the elastic support mechanism have structural abnormalities; There is an alignment anomaly in the transmission equipment.

[0051] Specifically, in this embodiment, after accurately determining the abnormal component, due to the different mechanisms of the abnormal parts, corresponding measures need to be taken for maintenance. Therefore, after determining the abnormal part, an alarm signal is sent to the client to prompt, so that maintenance can be carried out in time to ensure the safety of operation. The client can be a mobile phone, tablet, computer, etc.

[0052] This embodiment also provides an operation monitoring system of an elastic support mechanism, the system comprising: The elastic support mechanism mentioned above; A processor is connected to the elastic support mechanism and is used to execute the above-mentioned operation monitoring method of the elastic support mechanism.

[0053] Specifically, in this embodiment, the processor is connected to the transmission device 1, and the displacement sensors provided on the first torque arm 11 and the second torque arm 12. By receiving the displacement of the first torque arm, 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 device, the operation monitoring of the elastic support mechanism is realized, and at the same time, the status monitoring of the transmission device can also be realized.

[0054] This embodiment also provides a wind turbine generator set, including an operation monitoring system of the elastic support mechanism mentioned above.

[0055] Specifically, in this embodiment, the remaining structures of the operation monitoring system of the wind turbine set except for the above elastic support mechanism are prior art known to those skilled in the art, and will not be described in detail here. In addition, in this embodiment, the transmission device is a gearbox of the wind turbine set, the gearbox has a first torque arm and a second torque arm, and the elastic support mechanism is used to reduce the vibration between the gearbox and the frame of the wind turbine set. The above system can realize the status monitoring of the elastic support mechanism and the gearbox of the wind turbine set, and ensure the safe operation of the wind turbine set.

[0056] The optional implementation modes of the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical scheme of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

[0057] Those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including several instructions for making a single-chip microcomputer, a chip or a processor (processor) perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0058] The optional embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the technical concept of the embodiments of the present invention, the technical scheme of the embodiments of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to 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 when there is no contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations. In addition, various implementation modes of the embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the embodiments of the present invention, they should also be regarded as the contents disclosed by the embodiments of the present invention.

Claims

1. An elastic support mechanism, characterized in that: Used to reduce vibration between a transmission device (1) and a frame (2), the transmission device (1) having a first torque arm (11) and a second torque arm (12), the elastic support mechanism comprising: The first mechanism (31) and the second mechanism (32) are arranged on the frame (2) and are 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); the first mechanism (31) and the second mechanism (32) both comprise: A support frame (301) is detachably arranged on the frame (2) via a fixing mechanism (302), the support frame (301) comprising a vertical beam (3011), and an upper support beam (3012) and a lower support beam (3013) arranged on the vertical beam (3011), wherein the upper support beam (3012) is located directly above the lower support beam (3013); An upper elastic body (303) and a lower elastic body (304), a first torque arm (11) and a second torque arm (12) of the transmission device (1) are respectively connected to a corresponding upper support beam (3012) via a corresponding upper elastic body (303), and are respectively connected to a corresponding lower support beam (3013) via a corresponding lower elastic body (304); The elastic adjustment mechanism (305) is arranged between the lower support crossbeam (3013) and the frame (2), and 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 amount 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) comprises: A lifting mechanism (3051) 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; An elastic gasket (3052) is arranged between the lower supporting crossbeam (3013) and the frame (2).

3. The elastic support mechanism according to claim 1, characterized in that: The first torque arm (11) and the second torque arm (12) are both provided with a displacement sensor (101) for detecting 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 an elastic support mechanism, the elastic support mechanism comprising: The upper elastic body and the lower elastic body are used to reduce the vibration between the transmission device and the frame, and the transmission device has a first torque arm and a second torque arm, characterized in that the method includes: Obtaining a displacement of a first torque arm and a displacement of a second torque arm of a transmission device; If 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 a first preset threshold, it is determined that an abnormality exists; Obtaining the displacement direction of the first torque arm, the displacement direction of the second torque arm and the operating state of the transmission device; 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 state of the transmission device, an abnormal component is determined.

5. The operation monitoring method of the elastic support mechanism according to claim 4, characterized in that: The transmission equipment operating state includes: operating state and shutdown state; 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 state of the transmission device, determining the abnormal component includes: If the transmission device is in a stopped state, the displacement direction of the first torque arm is the same as the displacement direction 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 a second preset threshold, it is determined that the elastic support mechanism has an abnormal compression amount; If the transmission device is in a stopped state, the displacement direction of the first torque arm is opposite to the displacement direction 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 a third preset threshold, it is determined that the upper elastic body and / or the lower elastic body of the elastic support mechanism has a structural abnormality; If the transmission device 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 a fourth preset threshold, and the number of occurrences within a preset time period is greater than a preset number threshold, it is determined that the transmission device has a centering abnormality.

6. The operation monitoring method of the elastic support mechanism according to claim 5, characterized in that: The method further comprises: When it is determined that the elastic support mechanism has abnormal compression, a compression adjustment instruction 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, wherein the compression adjustment instruction is used to adjust the compression of the elastic body; When it is determined that the upper elastic body and / or the lower elastic body of the elastic support mechanism has structural abnormalities, the elastic body with the abnormalities is replaced; When it is determined that the transmission equipment has misalignment, perform alignment operations on the axis of the transmission equipment.

7. The operation monitoring method 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 supporting mechanism is leveled so that the lengths of the upper elastic body and the lower elastic body of the elastic supporting mechanism are the same.

8. The operation monitoring method of the elastic support mechanism according to claim 5, characterized in that: The method further comprises: When at least one of the following conditions occurs, an alarm signal is sent to the client: The elastic support mechanism has abnormal compression; The upper elastic body and / or the lower elastic body of the elastic support mechanism have structural abnormalities; There is an alignment anomaly in the transmission equipment.

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

10. A wind turbine generator set, characterized in that: An operation monitoring system comprising the elastic support mechanism described in claim 9.

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