CN220063392U - Vibration analysis device for wind driven generator bearing fault diagnosis - Google Patents
Vibration analysis device for wind driven generator bearing fault diagnosis Download PDFInfo
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- CN220063392U CN220063392U CN202322819747.7U CN202322819747U CN220063392U CN 220063392 U CN220063392 U CN 220063392U CN 202322819747 U CN202322819747 U CN 202322819747U CN 220063392 U CN220063392 U CN 220063392U
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- rotating shaft
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- detector
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- 238000003745 diagnosis Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model belongs to the technical field of wind driven generators, and discloses a vibration analysis device for wind driven generator bearing fault diagnosis. The rotational speed measurement assembly includes a detector and a positioner. The locator is fixedly connected to the bearing of the wind driven generator. The detector is fixedly connected to the rotating shaft of the wind driven generator, and rotates along with the rotating shaft to form an annular detection path. The locator is in the detection path. According to the utility model, the detector is arranged on the rotating shaft, so that the detector rotates along with the rotating shaft, and the annular detection is carried out on the bearing, so that the long-term monitoring of the whole bearing is realized. When bearing faults are detected, the fault positions are confirmed according to the locators, so that maintenance personnel can conveniently and rapidly maintain the bearing faults.
Description
Technical Field
The utility model relates to the technical field of wind driven generators, in particular to a vibration analysis device for wind driven generator bearing fault diagnosis.
Background
The wind driven generator bearing mainly comprises a yaw bearing, a variable pitch bearing, a main shaft bearing, a speed increaser bearing and a generator bearing. The wind driven generator bearing is an oversized turntable bearing, the outer diameter of the wind driven generator bearing is about 0.5-4.5 m, and the weight of the wind driven generator bearing is 0.5-6.0 tons. The diagnosis method of the wind driven generator bearing comprises various technical means such as vibration analysis, noise analysis, temperature monitoring and the like. However, when the wind driven generator is operated, due to the high bearing position of the wind driven generator and the influence of environmental factors such as wind power, temperature and humidity, the fault detection is difficult to be performed manually.
The existing diagnosis method of the generator bearing is often difficult to monitor and diagnose the running wind driven generator for a long time aiming at the uninstalled bearing. Even if a corresponding sensor such as a temperature sensor, a vibration sensor and the like is installed on the bearing, the overall performance of the bearing is difficult to monitor, and after the bearing fault is detected, the specific position of the fault is difficult to confirm.
In view of the above, the present utility model proposes a vibration analysis apparatus for wind turbine bearing failure diagnosis.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a vibration analysis device for wind driven generator bearing fault diagnosis.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a vibration analysis device for wind driven generator bearing fault diagnosis comprises a rotating speed measurement assembly and a vibration measurement assembly.
The rotational speed measurement assembly includes a detector and a positioner. The locator is fixedly connected to the bearing of the wind driven generator. The detector is fixedly connected to the rotating shaft of the wind driven generator, and rotates along with the rotating shaft to form an annular detection path. The locator is in the detection path.
The vibration measuring assembly comprises a vibration sensor which is arranged on the rotating shaft.
The vibration analysis device rotates along with the rotating shaft through the detector, and performs annular detection on the bearing, so that the whole bearing is monitored for a long time. When bearing faults are detected, the fault positions can be confirmed according to the locators, and maintenance personnel can conveniently and rapidly overhaul.
Further, the vibration analysis device further comprises a supporting component, the supporting component comprises a base and a bracket, and the base is fixedly connected to the rotating shaft. The support is fixedly connected to the base. The bracket is fixedly connected with the detector.
Further, the vibration measuring assembly further comprises a vibration sensor, a supporting rod, a fixed cylinder, an adjusting block, a spring and balls. The fixed cylinder is fixedly connected with the bracket. The fixed cylinder is internally provided with a through groove. The regulating block spiro union is in the one end of logical groove. The supporting rod is connected with the other end of the through groove in a sliding way. The supporting rod is connected with the adjusting block in a sliding way. The spring is fixedly connected between the supporting rod and the adjusting block. The vibration sensor is fixedly arranged on the supporting rod. One end of the supporting rod facing the bearing is provided with a ball groove. The ball is accommodated in the spherical groove.
Further, the vibration analysis apparatus further includes a noise sensor fixedly mounted on the bracket.
Further, the vibration analysis device further comprises at least one balancing weight which is fixedly connected to the rotating shaft, and the balancing weight and the base are in an annular array relative to the rotating shaft.
The utility model relates to a vibration analysis device for wind driven generator bearing fault diagnosis, which has the technical effects and advantages that:
(1) The detector rotates along with the rotating shaft to carry out annular detection on the bearing, so that the whole bearing can be monitored for a long time. When bearing faults are detected, the fault positions can be confirmed according to the locators, and maintenance personnel can conveniently and rapidly overhaul.
(2) The distance between the supporting rod and the bearing surface can be adjusted by rotating the adjusting block. When the vibration analysis device works, the balls are in direct contact with the surface of the bearing, sliding friction between the vibration measurement assembly and the bearing is converted into rolling friction, vibration detection on the surface of the bearing is achieved, and the service life of the vibration analysis device is prolonged.
(3) Through setting up the balancing weight to be annular setting with balancing weight and base, make the pivot whole keep balanced. When the rotating shaft rotates, the abrasion increase of the rotating shaft and the bearing caused by the gravity center deviation of the rotating shaft can be avoided.
Drawings
FIG. 1 is a schematic perspective view of a vibration analysis apparatus for wind turbine bearing failure diagnosis according to the present utility model;
FIG. 2 is a schematic view of another perspective structure of the vibration analyzer shown in FIG. 1 after the rotation of the rotating shaft;
FIG. 3 is a schematic view of a partial perspective structure of the vibration analyzer of FIG. 1;
FIG. 4 is a schematic diagram showing a front view of the vibration analyzer of FIG. 3;
fig. 5 is a schematic cross-sectional view of fig. 4 along A-A.
In the figure:
11. a positioner; 12. a detector; 2. a vibration measurement assembly; 21. a fixed cylinder; 22. a support rod; 23. a ball; 24. an adjusting block; 25. a vibration sensor; 26. a spring; 3. a noise sensor; 4. a support assembly; 41. a base; 42. a bracket; 5. balancing weight; 100. a bearing; 200. a rotating shaft.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1-2, the present embodiment provides a vibration analysis apparatus for wind turbine bearing fault diagnosis, which includes a rotation speed measurement assembly, and may further include a support assembly 4, a vibration measurement assembly 2, a noise sensor 3, and at least one balancing weight 5.
The rotational speed measuring assembly comprises a detector 12 and a positioner 11. The positioner 11 is fixedly connected to the bearing 100 of the wind power generator. The detector 12 is fixedly connected withOn the rotating shaft 200 of the wind driven generator, the detector 12 rotates along with the rotating shaft 200 to form an annular detection path. The positioner 11 is in the detection path. During normal operation of the wind turbine, the shaft 200 rotates with the blades, driving the detector 12 to move along the circular path. The detector 12 may be a displacement sensor or a speed sensor for measuring the rotational speed of the shaft 200. When the detector 12 detects that the bearing 100 has a fault when passing through the positioner 11, the fault position can be calculated according to the position of the positioner 11, which is helpful for rapid maintenance from the bearing 100 to the fault position. Specifically, assuming that the bearing 100 is malfunctioning based on the rate change detected by the detector 12, or based on the vibration data and noise data detected by the vibration sensor 25 and the noise sensor 3, the position of the malfunctioning position with respect to the positioner 11 can be calculated based on the timing of acquisition of the corresponding data. A plane coordinate system is established with the center of the surface of the bearing 100 as the origin. Coordinates of the positioner 11 are set to (0, y) 1 ) The detector 12 records the time t of two successive passes through the positioner 11 1 The time corresponding to the fault data is t compared with the time when the fault data first passes through the positioner 11 2 If the wind driven generator rotating shaft 200 moves at a uniform speed, the coordinates of the fault position can be expressed as: (y) 1 sin2πt 2 /t 1 ，y 1 cos2πt 2 /t 1 ). Of course, variations in the speed of the spindle 200 should also be taken into account during the actual diagnostic process.
Referring to fig. 3-5, the support assembly 4 includes a base 41 and a bracket 42, wherein the base 41 is fixedly connected to the rotating shaft 200. The bracket 42 is fixedly connected to the base 41. The bracket 42 is fixedly connected to the detector 12. The base 41 and the bracket 42 serve as main supporting members, and it is possible to facilitate mounting of the respective detecting elements such as the detector 12, the vibration sensor 25, the noise sensor 3, and the like. The base 41 may be fixedly connected to the rotating shaft 200 by screwing, welding, or the like. The base 41 and the bracket 42 may be made of metal materials such as stainless steel and aluminum alloy, so that the vibration analyzer maintains a stable structure when rotating along with the rotation shaft 200.
The vibration measuring assembly 2 includes a vibration sensor 25, a support rod 22, a fixed cylinder 21, an adjustment block 24, a spring 26, and a ball 23. The fixed cylinder 21 is fixedly connected with the bracket 42, and the whole fixed cylinder 21 is perpendicular to the surface of the bearing 100. A through groove is formed in the fixed cylinder 21. The adjusting block 24 is screwed on one end of the through groove back to the bearing 100. The support bar 22 is slidably connected to the other end of the through groove. The support bar 22 is slidably connected to the adjustment block 24. The spring 26 is fixedly connected between the support bar 22 and the adjustment block 24. The vibration sensor 25 is fixedly installed on the support bar 22. The end of the support bar 22 facing the bearing 100 is provided with a spherical groove. The balls 23 are accommodated in the spherical grooves. By rotating the adjustment block 24, the spacing of the support bar 22 from the surface of the bearing 100 can be adjusted. In operation of the vibration analysis apparatus, the balls 23 are in direct contact with the surface of the bearing 100, converting sliding friction between the vibration measuring assembly and the bearing 100 into rolling friction. The vibration of the bearing 100 is transmitted to the vibration sensor 25 through the ball 23 and the support rod 22, and the vibration sensor 25 can indirectly detect the vibration signal of the bearing 100.
The noise sensor 3 is fixedly mounted on the bracket 42. The noise sensor 3 can collect noise emitted by the bearing 100, and further judge whether the bearing 100 has a fault according to the change of noise data. In actual fault diagnosis, it is necessary to determine whether or not the bearing 100 has a fault in combination with the speed signal, the vibration signal, and the noise signal, and confirm the fault location by mutual authentication.
The balancing weight 5 is fixedly connected to the rotating shaft 200, and the balancing weight 5 and the base 41 are in an annular array relative to the rotating shaft 200. In this embodiment, two weights 5 are provided, and the total weight of the base 41 and the parts supported by the base is equal to the weight of the weights 5. The two balancing weights 5 are arranged in a ring shape with the base 41, so that the whole rotating shaft 200 is balanced. Particularly, when the rotation shaft 200 rotates, an increase in wear of the rotation shaft 200 and the bearing 100 due to a shift in the center of gravity of the rotation shaft 200 can be prevented.
Working principle: in the vibration analysis device of the present embodiment, when the wind turbine is running, the detector 12, the vibration sensor 25, and the noise sensor 3 on the base 41 all rotate along with the rotating shaft 200, so as to realize the overall detection of the bearing 100. When detecting that the bearing 100 has a fault, the fault position can be confirmed according to the positioner 11, so that the maintenance personnel can conveniently and quickly maintain the bearing. In general, the vibration analysis device of the embodiment has stable structure and high detection precision, can realize long-term and integral detection of the wind driven generator bearing 100, can rapidly position the vibration analysis device, and improves the maintenance efficiency of the bearing 100.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (5)
1. A vibration analysis apparatus for wind turbine bearing failure diagnosis, comprising:
the rotating speed measuring assembly comprises a detector (12) and a positioner (11); the locator (11) is fixedly connected to a bearing (100) of the wind driven generator; the detector (12) is fixedly connected to the rotating shaft (200) of the wind driven generator, and the detector (12) rotates along with the rotating shaft (200) to form an annular detection path; -the positioner (11) is on the detection path;
a vibration measurement assembly (2) comprising a vibration sensor (25); the vibration sensor (25) is mounted on the rotating shaft (200).
2. Vibration analysis device for wind turbine bearing failure diagnosis according to claim 1, characterized in that it further comprises a support assembly (4), said support assembly (4) comprising a base (41) and a bracket (42), said base (41) being fixedly connected to said rotating shaft (200); the bracket (42) is fixedly connected to the base (41); the bracket (42) is fixedly connected with the detector (12).
3. Vibration analysis device for wind turbine bearing failure diagnosis according to claim 2, characterized in that the vibration measurement assembly (2) further comprises a support bar (22), a fixed cylinder (21), an adjusting block (24), a spring (26) and balls (23); the fixed cylinder (21) is fixedly connected with the bracket (42); a through groove is formed in the fixed cylinder (21); the adjusting block (24) is in threaded connection with one end of the through groove; the supporting rod (22) is connected to the other end of the through groove in a sliding manner; the supporting rod (22) is in sliding connection with the adjusting block (24); the spring (26) is fixedly connected between the supporting rod (22) and the adjusting block (24); the vibration sensor (25) is fixedly arranged on the supporting rod (22); one end of the supporting rod (22) facing the bearing (100) is provided with a spherical groove; the balls (23) are accommodated in the ball grooves.
4. A vibration analysis apparatus for wind turbine bearing failure diagnosis according to claim 2, further comprising a noise sensor (3), the noise sensor (3) being fixedly mounted on the bracket (42).
5. Vibration analysis device for wind turbine bearing failure diagnosis according to claim 2, further comprising at least one balancing weight (5), said balancing weight (5) being fixedly connected to said rotating shaft (200), said balancing weight (5) and said base (41) being in an annular array with respect to said rotating shaft (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322819747.7U CN220063392U (en) | 2023-10-20 | 2023-10-20 | Vibration analysis device for wind driven generator bearing fault diagnosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322819747.7U CN220063392U (en) | 2023-10-20 | 2023-10-20 | Vibration analysis device for wind driven generator bearing fault diagnosis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220063392U true CN220063392U (en) | 2023-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322819747.7U Active CN220063392U (en) | 2023-10-20 | 2023-10-20 | Vibration analysis device for wind driven generator bearing fault diagnosis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220063392U (en) |
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2023
- 2023-10-20 CN CN202322819747.7U patent/CN220063392U/en active Active
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