Wind turbine bearing state monitoring equipment and monitoring method

Abstract

The invention discloses wind turbine bearing state monitoring equipment and a monitoring method, which are applied to state monitoring of the compression amount of a fan and an end cover, the wind turbine bearing state monitoring equipment comprises connecting bolts, a pre-tightening detection mechanism and a bunching mechanism, and a plurality of groups of connecting bolts are installed at the joint of the fan and the end cover in a surrounding manner; the multiple sets of pre-tightening detection mechanisms are arranged on the rod walls of the multiple sets of connecting bolts correspondingly, the pre-tightening detection mechanisms are used for monitoring the pre-tightening force of the connecting bolts, and communication lines are arranged at the communication ends of the multiple sets of pre-tightening detection mechanisms; the bunching mechanism comprises a bearing part and a take-up part, the bearing part is arranged on the outer wall of the end cover in a sleeving mode, and the take-up part is arranged on the top of the bearing part. The pre-tightening detection mechanism is arranged on the rod wall of the connecting bolt, the pre-tightening force of the connecting bolt is judged through detection data of the gasket type force sensor, guidance is conducted when the connecting bolt is installed, the connecting position of the draught fan and the end cover is monitored in real time, and therefore the running state of the draught fan is judged.

Description

Technical Field

[0001] The present invention relates to the field of wind turbine status monitoring, and in particular to a wind turbine bearing status monitoring device and a monitoring method. Background Art

[0002] While the wind power industry is developing rapidly, wind power accidents are also emerging one after another. A series of serious problems have emerged during commissioning and operation. The grid connection problems of wind turbines and fault repair and diagnosis are particularly prominent, causing serious economic losses.

[0003] Wind turbines operate outdoors year-round, subject to harsh operating conditions, large temperature and humidity fluctuations, and complex load conditions. Consequently, wind turbine bearings must possess excellent impact resistance, sealing, lubrication, long life, and high reliability. Wind turbine bearings are crucial supporting components of wind turbines, playing a crucial role in the lifespan, performance, and reliability of the entire unit. Therefore, monitoring the preload of the main shaft bearing cover bolts is crucial.

[0004] Currently, vibration signals are primarily used to monitor the bearing's operating status for preload force on the main shaft bearing end cap bolts. However, vibration-based status monitoring requires the installation of additional vibration sensors and data acquisition equipment, which increases the overall cost of the wind turbine and complicates wiring. Furthermore, vibration signal analysis fails to account for sensor failures. Furthermore, vibration signals have a low signal-to-noise ratio, making them difficult to diagnose potential wind turbine faults in their early stages and unable to provide guidance for bearing installation. Summary of the Invention

[0005] The object of the present invention is to provide a wind turbine bearing condition monitoring device and a monitoring method to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a wind turbine bearing condition monitoring device, which is applied to the condition monitoring of the wind turbine and the end cover compression amount, comprising:

[0007] Connecting bolts, multiple groups of connecting bolts are installed around the connection between the fan and the end cover;

[0008] Pre-tightening detection mechanisms, wherein multiple groups of the pre-tightening detection mechanisms are respectively arranged on the rod walls of multiple groups of connecting bolts, the pre-tightening detection mechanisms are used to monitor the pre-tightening force of the connecting bolts, and the communication ends of the multiple groups of the pre-tightening detection mechanisms are all provided with communication lines;

[0009] A wire bundling mechanism is used for bundling and arranging communication lines. The wire bundling mechanism includes a bearing portion and a wire take-up portion. The bearing portion is sleeved on the outer wall of the end cover, and the wire take-up portion is arranged on the top of the bearing portion. The bearing portion is used for inserting and hanging communication lines, and the wire take-up portion is used for gathering multiple groups of communication lines.

[0010] Preferably, the preload detection mechanism includes:

[0011] a gasket-type force sensor, wherein the gasket-type force sensor is sleeved on the rod wall of the connecting bolt, and the output end of the gasket-type force sensor is electrically connected to one end of a communication line, wherein the communication line is used to transmit the preload force of the connecting bolt monitored by the gasket-type force sensor;

[0012] a first gasket, wherein the first gasket is sleeved on the wall of the connecting bolt rod and is located on a side of the gasket-type force sensor away from the end cover;

[0013] The second gasket is sleeved on the wall of the connecting bolt rod, and the second gasket is located on a side of the gasket-type force sensor close to the end cover.

[0014] Preferably, the bearing portion includes:

[0015] A load-bearing cover, which is sleeved on the outer wall of the end cover. A through hole is opened in the middle of the load-bearing cover, and the through hole is used for inserting the fan output shaft. A plurality of insertion openings are opened on one side of the load-bearing cover, and the insertion openings are used for winding and inserting communication lines. An installation opening is opened on the outer wall of the load-bearing cover and located at one of the insertion openings, and the installation opening is used for installing the wire take-up part;

[0016] Wire management components, multiple groups of the wire management components are respectively arranged in multiple insertion openings, and the wire management components are used to separate and organize communication lines in the insertion openings.

[0017] Preferably, one side of the supporting cover is open, the insertion opening is connected to the open side of the supporting cover, and a plurality of extrusion protrusions are provided on the inner ring wall of the supporting cover and located near the open side. The extrusion protrusions are used for friction sleeve installation of the supporting cover at the end cover through extrusion deformation.

[0018] Preferably, the wire management component includes arc-shaped protrusions, and the multiple arc-shaped protrusions are divided into two groups, and the two groups of arc-shaped protrusions are symmetrically arranged between the opposite inner walls of the same insertion port, and the communication line is inserted and connected in the space enclosed by the multiple arc-shaped protrusions and the insertion port.

[0019] Preferably, the wire take-up unit includes:

[0020] A connecting seat, the bottom of which is inserted and connected to the mounting opening, a through hole is opened in the middle of the connecting seat, and a locking member is provided between the bottom of the connecting seat and the inner wall of the mounting opening;

[0021] A connecting threaded tube, the connecting threaded tube is fixedly connected to the top of the connecting seat, the outer wall of the connecting threaded tube is provided with an external thread, a plurality of communication lines pass through the insertion hole and the inner wall of the connecting threaded tube in sequence from bottom to top, and a plurality of groups of wire clamping parts are provided around the side wall of the connecting threaded tube;

[0022] The fastening nut is threadedly sleeved on the outer wall of the connecting threaded tube. The fastening nut is used to clamp the communication line body in the threaded tube by squeezing the clamping piece. The fastening nut is used to drive the locking piece to engage the connecting bearing cover by pressing down.

[0023] Preferably, the side wall of the connecting threaded tube is provided with a plurality of rotating openings, and the wire clamping member includes an elastic pressure plate, which is connected to the rotating opening through an insertion, one end of the elastic pressure plate is fixedly connected to the inner wall of the top of the rotating opening, and the other end of the elastic pressure plate is obliquely extended outward to the outer wall of the connecting threaded tube, and an arc-shaped pressure plate is provided on the side of the elastic pressure plate close to the inner wall of the connecting threaded tube, and the arc-shaped pressure plate rotates and is inserted into the inner wall of the connecting threaded tube after being pressurized following the elastic pressure plate.

[0024] Preferably, an extrusion ring groove is provided at the top end of the connecting seat, and an engaging opening is provided at the bottom end of the connecting seat. The top end of the engaging opening and the bottom end of the extrusion ring groove are interconnected. The locking piece is arranged in the extrusion ring groove and the engaging opening. The bottom end of the fastening nut is fixedly connected with a lower pressure ring, and the lower pressure ring is used to drive the locking piece to rotate the inner wall of the engaging mounting opening by pressing down in the extrusion ring groove.

[0025] Preferably, the locking member comprises:

[0026] A driving gear rod, the driving gear rod being inserted and connected in a vertical direction to the through-hole between the extrusion ring groove and the bite opening;

[0027] A driving gear, the driving gear being rotatably connected to the top of the bite opening, wherein the outer wall of the driving gear is meshed with the teeth of the driving gear rod;

[0028] A driven gear, the driven gear being rotatably connected to the bottom of the engagement opening, the outer wall of the driven gear being meshed with the outer wall of the driving gear;

[0029] The bite arm has one end that rotates coaxially with the driven gear, and the other end of the bite arm is provided with a convex tooth, and the bite arm drives the convex tooth to pierce and bite the inner wall of the installation port through rotation.

[0030] A monitoring method for a wind turbine bearing condition monitoring device, using the wind turbine bearing condition monitoring device, the monitoring method comprises the following steps:

[0031] In the first step, the first gasket, the gasket-type force sensor, and the second gasket are sequentially mounted on the rod wall of the connecting bolt. The connecting bolt and the preload detection mechanism assembly are then used to connect the fan to the end cover. The detection data from the gasket-type force sensor is used to guide the installation of the connecting bolt.

[0032] The second step is to electrically connect the communication line to the output end of the gasket force sensor, and then connect the communication line to the data transceiver device;

[0033] The third step is to wrap the communication line around the card sleeve on the bearing part, and then sleeve the bearing part on the outer wall of the end cover;

[0034] The fourth step is to fix the take-up part and the load-bearing part together, and at the same time complete the collection and binding of multiple groups of communication lines. The preload force data of the connecting bolts detected by the gasket-type force sensor is transmitted in real time through the communication line to monitor the compression amount of the connection between the fan and the end cover.

[0035] The technical effects and advantages of the present invention are as follows:

[0036] (1) The present invention sets a pre-tightening detection mechanism at the rod wall of the connecting bolt, and the pre-tightening detection mechanism is composed of a gasket-type force sensor, a first gasket and a second gasket. The gasket-type force sensor is clamped in the middle by the first gasket and the second gasket, and the detection data of the gasket-type force sensor is used to judge the pre-tightening force of the connecting bolt. In this way, not only the connection compression amount between the fan and the end cover can be monitored, but also when the connecting bolt is installed, the pre-tightening force of the connecting bolt can be detected to provide guidance for the installation of the connecting bolt, so that the connection between the fan and the end cover can be monitored in real time, so as to judge the operating status of the fan.

[0037] (2) The present invention is provided with a wiring harness mechanism to bundle and manage the communication lines of the gasket-type force sensors connected at multiple groups of connecting bolts, thereby preventing the communication lines from affecting the operation of the fan main shaft, so that the gasket-type force sensors can further ensure the stable operation of the fan main shaft under the premise of implementing stable monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the overall structural connection of the present invention installed at the fan and the end cover.

[0039] Figure 2 This is a front view of the overall structural connection of the present invention installed at the fan and the end cover.

[0040] Figure 3 It is a connection diagram of the fan, end cover, connecting bolts and pre-tightening detection mechanism of the present invention.

[0041] Figure 4 It is a schematic structural diagram of the present invention connected with the pre-tightening detection mechanism as a whole.

[0042] Figure 5 This is a rear view of the structure in which the present invention is connected to the pre-tightening detection mechanism as a whole.

[0043] Figure 6 It is a schematic structural diagram of the present invention as a whole.

[0044] Figure 7 It is a structural schematic diagram of the wire harness mechanism of the present invention.

[0045] Figure 8 This is a schematic diagram of the overall structure of the cable harness mechanism after the fastening nut is removed.

[0046] Figure 9 This is a cross-sectional view of the structure of the connection between the wiring harness mechanism and the carrying cover of the present invention.

[0047] Figure 10 For the present invention Figure 9 A magnified schematic diagram of the structure at point A.

[0048] In the figure: 1. Fan; 2. End cover; 3. Connecting bolt; 4. Preload detection mechanism; 401. Gasket-type force sensor; 402. First gasket; 403. Second gasket; 5. Bearing cover; 501. Extrusion protrusion; 502. Arc-shaped protrusion; 503. Mounting port; 6. Communication line; 7. Connecting seat; 701. Extrusion ring groove; 8. Connecting threaded pipe; 801. Elastic pressure plate; 802. Arc-shaped pressure plate; 9. Fastening nut; 901. Lower pressure ring; 10. Driving gear rod; 11. Driving gear; 12. Driven gear; 13. Engaging arm. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0050] In embodiment 1, the present invention provides Figure 1-10 The wind turbine bearing condition monitoring device shown is used to monitor the condition of the wind turbine 1 and the end cover 2, including:

[0051] Connecting bolts 3, multiple groups of connecting bolts 3 are installed around the connection between the fan 1 and the end cover 2. The connecting bolts 3 are used to connect and install the fan 1 and the end cover 2. After the end cover 2 is installed and connected stably, it can ensure the stable rotation of the main shaft of the fan 1;

[0052] Pre-tightening detection mechanism 4, multiple sets of pre-tightening detection mechanisms 4 are respectively arranged on the rod walls of multiple sets of connecting bolts 3, the pre-tightening detection mechanism 4 is used to monitor the pre-tightening force of the connecting bolts 3, and the communication ends of the multiple sets of pre-tightening detection mechanisms 4 are all provided with communication lines 6;

[0053] Specifically, the preload detection mechanism 4 includes:

[0054] A gasket-type force sensor 401 is sleeved on the rod wall of the connecting bolt 3. The output end of the gasket-type force sensor 401 is electrically connected to one end of the communication line 6. The communication line 6 is used to transmit the preload force of the connecting bolt 3 monitored by the gasket-type force sensor 401.

[0055] It should be noted that the gasket force sensor 401 used in this solution is a bolt preload sensor, a sensor used to measure the preload force applied by the connecting bolt 3 during installation. The gasket force sensor 401 accurately measures the force applied to the connecting bolt 3, ensuring the reliability of the connection. It also monitors changes in the preload force in real time, identifying potential problems in a timely manner. The gasket force sensor 401 is internally equipped with a strain gauge. When the connecting bolt 3 is subjected to the preload force, the deformation of the connecting bolt 3 causes the resistance of the strain gauge to change. By measuring this change in resistance, the applied preload force can be calculated.

[0056] A first gasket 402 is sleeved on the rod wall of the connecting bolt 3 and is located on a side of the gasket-type force sensor 401 away from the end cover 2;

[0057] The second gasket 403 is sleeved on the rod wall of the connecting bolt 3 , and the second gasket 403 is located on a side of the gasket-type force sensor 401 close to the end cover 2 .

[0058] It should be noted that, by setting the first gasket 402 and the second gasket 403, the gasket-type force sensor 401 is squeezed and protected, and at the same time, the first gasket 402 and the second gasket 403 are used to transfer the pre-tightening force of the connecting bolt 3 to the gasket-type force sensor 401 for detection. Under such a structural setting, the detection of the pre-tightening force can be used to assist the installation of the connecting bolt 3.

[0059] The wire bundling mechanism is used for bundling and arranging the communication lines 6. The wire bundling mechanism includes a bearing portion and a wire taking-up portion. The bearing portion is sleeved on the outer wall of the end cover 2, and the wire taking-up portion is arranged on the top of the bearing portion. The bearing portion is used for inserting and hanging the communication lines 6, and the wire taking-up portion is used for gathering multiple groups of communication lines 6.

[0060] Specifically, the bearing portion includes:

[0061] The bearing cover 5 is sleeved on the outer wall of the end cover 2. A through hole is opened in the middle of the bearing cover 5 for inserting the output shaft of the fan 1. A plurality of insertion openings are opened on one side of the bearing cover 5 for winding and inserting the communication line 6. An installation opening 503 is opened on the outer wall of the bearing cover 5 and located at one of the insertion openings. The installation opening 503 is used for installing the wire take-up part.

[0062] Furthermore, one side of the supporting cover 5 is open, and the insertion opening is connected to the open side of the supporting cover 5. The inner ring wall of the supporting cover 5 is provided with multiple extrusion protrusions 501 located near the open side. The extrusion protrusions 501 are used for friction sleeve installation of the supporting cover 5 at the end cover 2 through extrusion deformation.

[0063] It should be noted that the inner wall diameter of the supporting cover 5 is larger than the outer wall diameter of the end cover 2, which also enables the supporting cover 5 to be sleeved on the outer wall of the end cover 2 through the open side. The extrusion protrusion 501 and the supporting cover 5 are both made of rubber material, which can produce elastic deformation after being compressed. The elastic deformation is used to increase the friction force connecting the supporting cover 5 and the end cover 2, so that the supporting cover 5 can be tightly sleeved on the outer wall of the end cover 2.

[0064] A cable management component, multiple groups of cable management components are respectively arranged in multiple insertion ports, and the cable management component is used to separate and organize the communication line 6 in the insertion port. The cable management component includes an arc-shaped protrusion 502, and the multiple arc-shaped protrusions 502 are divided into two groups, and the two groups of arc-shaped protrusions 502 are staggered and symmetrically arranged between the opposite inner walls of the same insertion port. The communication line 6 is inserted and connected in the space enclosed by the multiple arc-shaped protrusions 502 and the insertion port.

[0065] It should be noted that, through the structural setting of the arc-shaped protrusion 502, an interlaced interlaced space is formed in the insertion opening, so that the communication line 6 can be blocked. Under such a structural setting, the communication line 6 is prevented from being distributed in a disorderly manner at the main shaft of the fan 1. When the communication line 6 is connected, it is entangled with the wall end of the supporting cover 5 through the insertion opening and is blocked by the arc-shaped protrusion 502, so that the communication line 6 is away from the main shaft of the fan 1 to avoid the entanglement of the communication line 6 after the main shaft of the fan 1 is running.

[0066] Specifically, the take-up unit includes:

[0067] Connecting seat 7, the bottom of connecting seat 7 is inserted and connected in the installation opening 503, the middle part of connecting seat 7 is provided with an insertion hole, and a locking member is provided between the bottom of connecting seat 7 and the inner wall of installation opening 503;

[0068] The connecting threaded tube 8 is fixedly connected to the top of the connecting seat 7. The outer wall of the connecting threaded tube 8 is provided with an external thread. A plurality of communication lines 6 pass through the insertion hole and the inner wall of the connecting threaded tube 8 in sequence from bottom to top. A plurality of groups of wire clamps are provided around the side wall of the connecting threaded tube 8.

[0069] The fastening nut 9 is threadedly sleeved on the outer wall of the connecting threaded tube 8. The inner wall of the fastening nut 9 is provided with an internal thread, which is adapted to the external thread of the outer wall of the connecting threaded tube 8. The fastening nut 9 is used to clamp the communication line 6 in the threaded tube 8 by squeezing the wire clamping piece. The fastening nut 9 is used to drive the locking piece to engage the supporting cover 5 by pressing down.

[0070] It should be noted that the connecting seat 7 is a disc-shaped structure with an open area in the middle, which is set as a through hole for inserting the communication line 6, so that the communication line 6 is inserted upward from the bottom of the through hole and extends from the top of the connecting seat 7, and then passes through the middle of the connecting threaded tube 8 and comes out from the top of the connecting threaded tube 8, thereby connecting the communication line 6 to the transceiver communication equipment.

[0071] Furthermore, a plurality of rotating openings are provided on the side wall of the connecting threaded tube 8, and the wire clamping part includes an elastic pressure plate 801, which is connected to the rotating opening through an interlaced manner, and one end of the elastic pressure plate 801 is fixedly connected to the inner wall of the top of the rotating opening, and the other end of the elastic pressure plate 801 is obliquely extended outward to the outer wall of the connecting threaded tube 8, and an arc-shaped pressure plate 802 is provided on the side of the elastic pressure plate 801 close to the inner wall of the connecting threaded tube 8, and the arc-shaped pressure plate 802 rotates and is inserted into the inner wall of the connecting threaded tube 8 after being compressed by the elastic pressure plate 801.

[0072] It should be noted that the elastic pressure plate 801 is fixed to the inner wall of the top of the rotating mouth through one end. In the initial state, the other end of the elastic pressure plate 801 bulges outward in the direction away from the inner wall of the connecting threaded tube 8. When the elastic pressure plate 801 is pressurized, the end connected to the rotating mouth bends, and the other end rotates and shrinks into the rotating mouth. At this time, the arc pressure plate 802 rotates synchronously with the elastic pressure plate 801, thereby pressing against the inner wall of the connecting threaded tube 8. At this time, the communication line 6 inserted into the inner wall of the connecting threaded tube 8 will be squeezed by multiple groups of arc pressure plates 802, thereby achieving clamping of the communication line 6 on the inner wall of the connecting threaded tube 8.

[0073] Furthermore, an extrusion ring groove 701 is provided at the top of the connecting seat 7, and an engaging opening is provided at the bottom end of the connecting seat 7. The top of the engaging opening and the bottom end of the extrusion ring groove 701 are interconnected, and the fastener is arranged in the extrusion ring groove 701 and the engaging opening. The bottom end of the fastening nut 9 is fixedly connected with a lower pressure ring 901, and the lower pressure ring 901 is used to drive the fastener to rotate the inner wall of the engaging mounting opening 503 by pressing down in the extrusion ring groove 701.

[0074] Furthermore, the locking member includes:

[0075] The driving gear rod 10 is inserted and connected to the through-portion between the extrusion ring groove 701 and the bite opening in the vertical direction;

[0076] The driving gear 11 is rotatably connected to the top of the bite mouth, and the outer wall of the driving gear 11 is meshed with the teeth of the driving gear rod 10;

[0077] A driven gear 12 is rotatably connected to the bottom of the engagement opening, and an outer wall of the driven gear 12 is meshed with an outer wall of the driving gear 11;

[0078] The bite arm 13 has one end that rotates coaxially with the driven gear 12 , and the other end of the bite arm 13 is provided with a convex tooth. The bite arm 13 drives the convex tooth to pierce and bite the inner wall of the installation opening 503 through rotation.

[0079] It should be noted that the engaging arm 13 is coaxially fixed with the driven gear 12. When the lower pressure ring 901 continues to press down in the extrusion ring groove 701, it will gradually press down the driving gear rod 10. After the driving gear rod 10 moves down, it engages with the driving gear 11. At this time, the driving gear 11 rotates and engages with the driven gear 12. After the driven gear 12 rotates, it drives the engaging arm 13 to rotate coaxially. The engaging arm 13 rotates and gradually approaches the installation port 503. At this time, the convex tooth structure of the engaging arm 13 pierces into the inner wall of the installation port 503, thereby forming an engaging lock.

[0080] A monitoring method for a wind turbine bearing condition monitoring device, using the wind turbine bearing condition monitoring device of embodiment 1, the monitoring method comprises the following steps:

[0081] In the first step, the first gasket 402, the gasket-type force sensor 401, and the second gasket 403 are sequentially mounted on the rod wall of the connecting bolt 3. The connecting bolt 3 and the preload detection mechanism 4 are then assembled to connect the fan 1 and the end cover 2. The detection data of the gasket-type force sensor 401 is used to guide the installation of the connecting bolt 3.

[0082] It should be noted that after the first gasket 402, the gasket-type force sensor 401 and the second gasket 403 are installed, the connection between the fan 1 and the end cover 2 is connected using the connecting bolt 3. At this time, the gasket-type force sensor 401 continuously records the pre-tightening force of the connecting bolt 3. This operation can assist in guiding the installation of the connecting bolt 3.

[0083] The second step is to electrically connect the communication line 6 to the output end of the gasket-type force sensor 401, and then connect the communication line 6 to the data transceiver device;

[0084] It should be noted that, through the connection of the communication line 6 , the detection data of the pad type force sensor 401 is collected and sent, so as to read and record the readings.

[0085] The third step is to wrap the communication line 6 around the support part and then sleeve the support part onto the outer wall of the end cover 2;

[0086] It should be noted that, according to the positions of different gasket-type force sensors 401 connected to different communication lines 6, the communication line 6 is wrapped around the outer wall of the supporting cover 5 through the insertion port while avoiding the main shaft of the fan 1. At the same time, the wire body in the insertion port will be blocked by the arc-shaped protrusion 502.

[0087] The fourth step is to fix the take-up part and the load-bearing part, and at the same time complete the retraction and binding of multiple groups of communication lines 6. The pre-tightening force data of the connecting bolt 3 detected by the gasket-type force sensor 401 is transmitted in real time through the communication line 6 to monitor the compression amount at the connection between the fan 1 and the end cover 2.

[0088] It should be noted that after the communication line 6 is wound, it is sequentially passed through the insertion hole and the inner wall of the connecting threaded tube 8 from bottom to top. The fastening nut 9 is then rotated to move the fastening nut 9 closer to the connecting seat 7. During the movement of the fastening nut 9, the protruding elastic pressure plate 801 is squeezed, causing the elastic pressure plate 801 to retract into the rotating opening. The arc-shaped pressure plate 802 rotates and penetrates the inner wall of the connecting threaded tube 8 following the pressure of the elastic pressure plate 801, thereby clamping the portion of the communication line 6 on the inner wall of the connecting threaded tube 8. When the fastening nut 9 is continuously pressed downward, the pressure ring 901 is pressed down to the driving gear rod 10, and the meshing transmission of the driving locking member causes the engaging arm 13 to rotate and engage with the inner wall of the mounting opening 503.

[0089] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wind turbine bearing condition monitoring device, used for monitoring the condition of the compression amount of the wind turbine (1) and the end cover (2), characterized in that: include: Connecting bolts (3), wherein a plurality of groups of the connecting bolts (3) are installed around the connection between the fan (1) and the end cover (2); A pre-tightening detection mechanism (4), wherein a plurality of groups of the pre-tightening detection mechanisms (4) are respectively arranged on the rod walls of a plurality of groups of connecting bolts (3), the pre-tightening detection mechanisms (4) are used to monitor the pre-tightening force of the connecting bolts (3), and communication ends of the plurality of groups of the pre-tightening detection mechanisms (4) are all provided with communication lines (6); A wire bundling mechanism is used for bundling and arranging communication wires (6). The wire bundling mechanism comprises a bearing portion and a wire take-up portion. The bearing portion is sleeved on the outer wall of the end cover (2), and the wire take-up portion is arranged on the top of the bearing portion. The bearing portion is used for inserting and hanging the communication wires (6), and the wire take-up portion is used for gathering multiple groups of communication wires (6).

2. A wind turbine bearing condition monitoring device according to claim 1, characterized in that: The preload detection mechanism (4) comprises: a gasket-type force sensor (401), the gasket-type force sensor (401) being sleeved on the rod wall of the connecting bolt (3), the output end of the gasket-type force sensor (401) being electrically connected to one end of a communication line (6), the communication line (6) being used to transmit the pre-tightening force of the connecting bolt (3) monitored by the gasket-type force sensor (401); A first gasket (402), wherein the first gasket (402) is sleeved on the rod wall of the connecting bolt (3), and the first gasket (402) is located on a side of the gasket-type force sensor (401) away from the end cover (2); A second gasket (403) is sleeved on the rod wall of the connecting bolt (3), and the second gasket (403) is located on a side of the gasket-type force sensor (401) close to the end cover (2).

3. The wind turbine bearing condition monitoring device according to claim 1, characterized in that: The bearing portion includes: A bearing cover (5), the bearing cover (5) is sleeved on the outer wall of the end cover (2), a through hole is provided in the middle of the bearing cover (5), the through hole is used for inserting the output shaft of the fan (1), a plurality of insertion openings are provided on one side of the bearing cover (5), the insertion openings are used for winding and inserting the communication line (6), and an installation opening (503) is provided on the outer wall of the bearing cover (5) and located at one of the insertion openings, the installation opening (503) is used for installing the wire take-up part; A wire management component, wherein a plurality of groups of the wire management components are respectively arranged in a plurality of insertion openings, and the wire management components are used for separating and arranging the communication wires (6) in the insertion openings.

4. A wind turbine bearing condition monitoring device according to claim 3, characterized in that: One side of the bearing cover (5) is open, the insertion opening is connected to the open side of the bearing cover (5), and a plurality of extrusion protrusions (501) are provided on the inner ring wall of the bearing cover (5) and located near the open side. The extrusion protrusions (501) are used for friction sleeve installation of the bearing cover (5) on the end cover (2) through extrusion deformation.

5. The wind turbine bearing condition monitoring device according to claim 3, characterized in that: The cable management component includes arc-shaped protrusions (502), and the plurality of arc-shaped protrusions (502) are divided into two groups, and the two groups of arc-shaped protrusions (502) are staggered and symmetrically arranged between the opposite inner walls of the same insertion opening, and the communication line (6) is inserted and connected in the space enclosed by the plurality of arc-shaped protrusions (502) and the insertion opening.

6. The wind turbine bearing condition monitoring device according to claim 3, characterized in that: The wire take-up unit comprises: A connecting seat (7), the bottom of the connecting seat (7) is inserted and connected in the installation opening (503), a through hole is opened in the middle of the connecting seat (7), and a locking member is provided between the bottom of the connecting seat (7) and the inner wall of the installation opening (503); A connecting threaded tube (8) is fixedly connected to the top of the connecting seat (7), an outer wall of the connecting threaded tube (8) is provided with an external thread, a plurality of communication lines (6) pass through the insertion hole and the inner wall of the connecting threaded tube (8) in sequence from bottom to top, and a plurality of groups of wire clamping parts are provided around the side wall of the connecting threaded tube (8); A fastening nut (9) is threadedly sleeved on the outer wall of the connecting threaded tube (8), and the fastening nut (9) is used to clamp the communication line (6) in the threaded tube (8) by squeezing the clamping piece, and the fastening nut (9) is used to drive the locking piece to engage the bearing cover (5) by pressing down.

7. The wind turbine bearing condition monitoring device according to claim 6, characterized in that: The side wall of the connecting threaded tube (8) is provided with a plurality of rotating openings, and the clamping member includes an elastic pressure plate (801), the elastic pressure plate (801) is connected to the rotating opening through insertion, one end of the elastic pressure plate (801) is fixedly connected to the inner wall of the top end of the rotating opening, and the other end of the elastic pressure plate (801) is obliquely extended outward to the outer wall of the connecting threaded tube (8), and an arc pressure plate (802) is provided on the side of the elastic pressure plate (801) close to the inner wall of the connecting threaded tube (8), and the arc pressure plate (802) rotates and inserts into the inner wall of the connecting threaded tube (8) after being pressed by the elastic pressure plate (801).

8. The wind turbine bearing condition monitoring device according to claim 6, characterized in that: The top end of the connecting seat (7) is provided with an extrusion ring groove (701), and the bottom end of the connecting seat (7) is provided with an engagement opening, the top end of the engagement opening and the bottom end of the extrusion ring groove (701) are mutually connected, and the locking member is arranged in the extrusion ring groove (701) and the engagement opening, and the bottom end of the fastening nut (9) is fixedly connected with a lower pressure ring (901), and the lower pressure ring (901) is used to drive the locking member to rotate the inner wall of the engagement installation opening (503) by pressing down in the extrusion ring groove (701).

9. The wind turbine bearing condition monitoring device according to claim 8, characterized in that: The locking member comprises: A driving gear rod (10), the driving gear rod (10) is inserted and connected to the through-hole between the extrusion ring groove (701) and the bite opening in the vertical direction; A driving gear (11), wherein the driving gear (11) is rotatably connected to the top of the bite mouth, and the outer wall of the driving gear (11) is meshed with the teeth of the driving gear rod (10); A driven gear (12), the driven gear (12) being rotatably connected to the bottom of the engagement opening, the outer wall of the driven gear (12) being meshed with the outer wall of the driving gear (11); A bite arm (13), one end of which rotates coaxially with the driven gear (12), and the other end of which is provided with a convex tooth, wherein the bite arm (13) drives the convex tooth to penetrate and bite the inner wall of the mounting opening (503) through rotation.

10. A monitoring method for a wind turbine bearing condition monitoring device, comprising: a wind turbine bearing condition monitoring device according to claim 1 to claim 9, characterized in that: The monitoring method comprises the following steps: In the first step, the first gasket (402), the gasket-type force sensor (401), and the second gasket (403) are sequentially sleeved on the rod wall of the connecting bolt (3), and then the connecting bolt (3) and the pre-tightening detection mechanism (4) are assembled to connect the fan (1) and the end cover (2), while the detection data of the gasket-type force sensor (401) is used to guide the installation of the connecting bolt (3); The second step is to electrically connect the communication line (6) to the output end of the gasket-type force sensor (401), and then connect the communication line (6) to the data transceiver device; The third step is to wrap the communication line (6) around the bearing part and then sleeve the bearing part onto the outer wall of the end cover (2); In the fourth step, the take-up portion is fixedly connected to the bearing portion, and the plurality of communication lines (6) are simultaneously gathered and bound. The pre-tightening force data of the connection bolts (3) detected by the gasket-type force sensor (401) is transmitted in real time through the communication line (6), so as to monitor the compression amount at the connection between the fan (1) and the end cover (2).

Images