Wind turbine generator bearing temperature anomaly detection device

Abstract

The invention belongs to the technical field of monitoring of wind turbines, and discloses a wind turbine generator bearing temperature anomaly detection device which comprises a wind wheel assembly, the wind wheel assembly is rotationally arranged on a wind turbine generator bin assembly through a generator set bearing, and a temperature detection disc assembly used for conducting temperature detection on the generator set bearing is rotationally arranged in the wind turbine generator bin assembly. When the temperature detection device is used, a plurality of temperature detection points are arranged on the wind turbine cabin, and the temperature probes directly facing the temperature detection points are electrified for detection, so that other temperature probes not directly facing the temperature detection points are in an idle state; and meanwhile, rotation of the follow-up driving wheel assembly is achieved through rotation of the wind wheel shaft rod, the technical design is achieved by electrifying the electromagnet, when the follow-up driving wheel assembly and the temperature detection disc assembly do not need to rotate, only the electromagnet needs to be powered off, use is convenient, and operation is convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of monitoring of wind turbines, and particularly relates to a device for detecting abnormal temperature of bearings of a wind turbine unit. Background Art

[0002] A wind turbine unit is a device that converts wind energy into electrical energy, and generally consists of main components such as a wind wheel, a generator, a gearbox, a tower, and a control system.

[0003] The existing technology has the following problems: The wind wheel is an important component in a wind turbine unit. The wind wheel rotates under the action of wind and converts wind energy into electrical energy. The wind wheel is rotatably arranged on the nacelle through the unit bearings. In actual use, by detecting the working state and data of the unit bearings, the working performance and state of the wind wheel can be clearly understood. Among them, the temperature detection of the unit bearings is a very important detection index. Because the unit bearings are relatively large, temperature detection at multiple points must be carried out. However, in actual use, the existing unit bearing temperature detection mechanism has the following problems. On the one hand, the detection probes used for the temperature detection of the existing unit bearings are all fixed, which leads to the loss of temperature detection at this point of the unit bearings when a single probe is damaged, resulting in the loss or abnormality of the detection data. On the other hand, the temperature detection probes are fixed, and during cleaning and replacement, because it is high-altitude operation, it is actually very difficult for workers to carry out operations or maintenance. Summary of the Invention

[0004] To solve the problems raised in the above background art, the present invention provides a device for detecting abnormal temperature of bearings of a wind turbine unit, which has the characteristic of facilitating temperature detection.

[0005] To achieve the above object, the present invention provides the following technical solution: A device for detecting abnormal temperature of bearings of a wind turbine unit, including a wind wheel assembly, the wind wheel assembly is rotatably arranged on a wind turbine nacelle assembly through unit bearings, a temperature detection disk assembly for temperature detection of the unit bearings is rotatably arranged in the wind turbine nacelle assembly, and a follow-up drive wheel assembly for driving the temperature detection disk assembly to perform transposition detection is rotatably arranged in the wind turbine nacelle assembly. An extended follow-up drive wheel structure is formed on the follow-up drive wheel assembly. Through the auxiliary drive of the follow-up drive wheel assembly, the rotation of the wind wheel assembly is converted into a fixed-point transposition structure of the temperature detection disk assembly. Through the fixed-point transposition structure of the temperature detection disk assembly, the replacement of the detection probe at the same point of the unit bearings is realized, and during the replacement of the detection probe, the self-cleaning of the detection probe is synchronously realized.

[0006] In a preferred embodiment of a device for detecting abnormal temperature of bearings of a wind turbine unit, the wind wheel assembly includes a wind wheel, and a wind wheel shaft rod is arranged on the wind wheel; The wind turbine nacelle assembly includes a wind turbine nacelle. A plurality of wiping arms with wiping pads are fixedly arranged on the inner wall of the wind turbine nacelle, and a plurality of first electrical contacts mounted on jacking spring rods are fixedly arranged on the inner wall of the wind turbine nacelle. The jacking spring rods are opposite to the temperature detection points. A vertical arm plate is fixedly arranged on the inner wall of the wind turbine nacelle, and a detection gap is formed between the two wiping arms.

[0007] In a preferred embodiment of a device for detecting abnormal temperature of a wind turbine bearing, the temperature detection disc assembly includes a detection disc. A plurality of temperature probes with second electrical contacts are fixedly arranged on one side of the detection disc through support rods, and limiting arc grooves and toggle arm grooves are arranged on the detection disc at intervals. The follow-up drive wheel assembly includes a fixed disc. A connecting shaft rod is rotatably arranged in the middle of the fixed disc. A toothed wheel and a drive disc are respectively fixedly arranged on both sides of the connecting shaft rod. A plurality of arc grooves are formed on the drive disc. A plurality of pulling arms with pulling rods are slidably arranged on the fixed disc through sliding grooves. A resisting arc plate is fixedly arranged at the distal end of the pulling arm. A U-shaped frame with a transposition shaft rod is fixedly arranged on the back of the fixed disc, and an electromagnet and a second support platform are fixedly arranged on the back of the fixed disc. A toothed moving tooth arm is slidably arranged on the back of the fixed disc. A magnet is fixedly arranged on the back of the toothed moving tooth arm through a first support platform. A spring is fixedly arranged between the first support platform and the second support platform. A transposition wheel with a transposition arm is fixedly arranged at the distal end of the transposition shaft rod, and a transposition rod is fixedly arranged at the distal end of the transposition arm.

[0008] In a preferred embodiment of a device for detecting abnormal temperature of a wind turbine bearing, the wind wheel shaft rod is rotatably arranged on the wind turbine nacelle through a unit bearing, and the detection disc on the temperature detection disc assembly is rotatably arranged on the inner wall of the wind turbine nacelle through a bearing.

[0009] In a preferred embodiment of a device for detecting abnormal temperature of a wind turbine bearing, the transposition shaft rod is rotatably arranged on the vertical arm plate through a bearing, the toothed moving tooth arm is slidably arranged on the fixed disc through a slider and a sliding groove, and the toothed moving tooth arm meshes with the toothed wheel.

[0010] In a preferred embodiment of a device for detecting abnormal temperature of a wind turbine bearing, the drive disc rotates on one side of the fixed disc, and the pulling rod is inserted into the arc groove.

[0011] In a preferred embodiment of a device for detecting abnormal temperature of a wind turbine bearing, the temperature probe faces the unit bearing through the detection gap for detection. The second electrical contact on the temperature probe and the first electrical contact at the temperature detection point are on the same rotating plane. When the second electrical contact contacts the first electrical contact, the temperature probe is powered on.

[0012] In a preferred embodiment of the bearing temperature anomaly detection device for a wind turbine, the commutator wheel and the detection disc are located on the same rotating plane, and the commutator wheel rotates within the limit arc groove to limit the detection disc.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: When the present invention is in use, multiple temperature detection points are provided on the wind turbine nacelle. The present invention conducts power-on detection of the temperature probes at the positions directly facing the temperature detection points, while the temperature probes not directly facing the temperature detection points will be in an idle state. Through this design, when the temperature detection at a certain point on the unit bearing is abnormal, it is difficult to distinguish whether the temperature probe is damaged or the actual temperature of the unit bearing is abnormal. By rotating the temperature detection disc assembly, the idle temperature probes on the temperature detection disc assembly are rotated and replaced, so that the idle temperature probes replace the working temperature probes. If the temperature is still abnormal after the idle temperature probe is powered on, it indicates that the temperature anomaly at this point on the unit bearing actually exists. Moreover, the temperature detection disc assembly can be rotated again to realize the replacement of the idle temperature probe again, thereby realizing the detection of replacing the probe at the same point on the unit bearing. At the same time, if it is detected that a certain temperature probe in use is damaged or loses the ability to collect data, through the rotation of the temperature detection disc assembly, the damaged temperature probe can also be replaced, avoiding workers from climbing to high places for maintenance and replacement. The rotation of the follow-up drive wheel assembly of the present invention is realized by means of the rotation of the wind wheel shaft. This technical design is achieved by energizing the electromagnet. When the follow-up drive wheel assembly and the temperature detection disc assembly do not need to rotate, only the electromagnet needs to be powered off, which is convenient to use and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is an exploded view of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 is a three-dimensional view of the present invention; Figure 4 is a three-dimensional view of the wind wheel assembly of the present invention; Figure 5 is a three-dimensional view of the wind turbine nacelle assembly of the present invention; Figure 6 is a three-dimensional view of a part of the structure of the present invention; Figure 7 is a three-dimensional view of the temperature detection disc assembly and the follow-up drive wheel assembly of the present invention; Figure 8 is a three-dimensional view of the temperature detection disc assembly of the present invention; Figure 9 is a three-dimensional view of the follow-up drive wheel assembly of the present invention; Figure 10 is an exploded view of the follow-up drive wheel assembly of the present invention; In the figure: 100, wind turbine component; 101, wind wheel; 102, wind wheel shaft; 200, unit bearing; 300, wind turbine nacelle component; 301, wind turbine nacelle; 302, temperature detection point; 303, first electrical contact; 304, top spring rod; 305, detection gap; 306, wiping arm; 307, wiping pad; 308, vertical arm plate; 400, temperature detection disc component; 401, detection disc; 402, limiting arc groove; 403, toggle arm groove; 404, second electrical contact; 405, temperature probe; 500, follow-up drive wheel component; 501, fixed disc; 502, abutting arc plate; 503, gear drive wheel; 504, drive disc; 505, electromagnet; 506, first support platform; 507, magnet; 508, spring; 509, second support platform; 510, gear drive arm; 511, transposition rod; 512, transposition arm; 513, transposition wheel; 514, transposition shaft; 515, U-shaped frame; 516, connecting shaft; 517, arc groove; 518, pulling rod; 519, pulling arm. Detailed implementation manners

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Please refer to Figures 1-10 As shown, the present invention provides a device for detecting abnormal temperature of a wind turbine unit bearing, including a wind turbine component 100. The wind turbine component 100 is rotatably arranged on a wind turbine nacelle component 300 through a unit bearing 200. A temperature detection disc component 400 for detecting the temperature of the unit bearing 200 is rotatably arranged in the wind turbine nacelle component 300. And a follow-up drive wheel component 500 for driving the temperature detection disc component 400 to perform transposition detection is rotatably arranged in the wind turbine nacelle component 300. The follow-up drive wheel component 500 forms an extended follow-up drive wheel structure. Through the auxiliary drive of the follow-up drive wheel component 500, the rotation of the wind turbine component 100 is converted into a fixed-point transposition structure of the temperature detection disc component 400. Through the fixed-point transposition structure of the temperature detection disc component 400, the detection of the same point of the unit bearing 200 with a different probe is realized. When detecting with a different probe, the self-cleaning of the detection probe is synchronously realized.

[0017] In a preferred embodiment, please refer to Figure 4 and Figure 5 , the wind turbine component 100 includes a wind wheel 101, and a wind wheel shaft 102 is arranged on the wind wheel 101; The wind turbine nacelle assembly 300 includes a wind turbine nacelle 301. A plurality of wiping arms 306 with wiping pads 307 are fixedly arranged on the inner wall of the wind turbine nacelle 301. And a plurality of first electrical contacts 303 mounted on the tension spring rods 304 are fixedly arranged on the inner wall of the wind turbine nacelle 301. The tension spring rods 304 are positioned opposite to the temperature detection points 302. A vertical arm plate 308 is fixedly arranged on the inner wall of the wind turbine nacelle 301. A detection gap 305 is formed between two wiping arms 306. The wind wheel shaft rod 102 is rotatably arranged on the wind turbine nacelle 301 through the unit bearing 200.

[0018] In a preferred embodiment, please refer to Figure 8 , the temperature detection disc assembly 400 includes a detection disc 401. A plurality of temperature probes 405 with second electrical contacts 404 are fixedly arranged on one side of the detection disc 401 through support rods. And limiting arc grooves 402 and toggle arm grooves 403 are spacedly formed on the detection disc 401. The detection disc 401 on the temperature detection disc assembly 400 is rotatably arranged on the inner wall of the wind turbine nacelle 301 through a bearing. The temperature probes 405 face the unit bearing 200 through the detection gap 305 and conduct detection. The second electrical contacts 404 on the temperature probes 405 and the first electrical contacts 303 at the temperature detection points 302 are on the same rotation plane. When the second electrical contacts 404 contact the first electrical contacts 303, the power supply to the temperature probes 405 is completed.

[0019] In a preferred embodiment, please refer to Figure 9 and Figure 10, the follow-up drive wheel assembly 500 includes a fixed disk 501. A connecting shaft rod 516 is rotatably arranged in the middle of the fixed disk 501. On both sides of the connecting shaft rod 516, a gear driving wheel 503 and a driving disk 504 are respectively and fixedly arranged. A plurality of arc-shaped grooves 517 are formed in the driving disk 504. A plurality of pulling arms 519 with pulling rods 518 are slidably arranged on the fixed disk 501 through sliding grooves. A contact arc plate 502 is fixedly arranged at the distal end of the pulling arm 519. A U-shaped frame 515 with a position-changing shaft rod 514 is fixedly arranged on the back of the fixed disk 501. An electromagnet 505 and a second support platform 509 are fixedly arranged on the back of the fixed disk 501. A gear driving tooth arm 510 is slidably arranged on the back of the fixed disk 501. A magnet 507 is fixedly arranged on the back of the gear driving tooth arm 510 through a first support platform 506. A spring 508 is fixedly arranged between the first support platform 506 and the second support platform 509. A position-changing wheel 513 with a position-changing arm 512 is fixedly arranged at the distal end of the position-changing shaft rod 514. A position-changing rod 511 is fixedly arranged at the distal end of the position-changing arm 512. The position-changing shaft rod 514 is rotatably arranged on the vertical arm plate 308 through a bearing. The gear driving tooth arm 510 is slidably arranged on the fixed disk 501 through a slider and a sliding groove. The gear driving tooth arm 510 meshes with the gear driving wheel 503. The driving disk 504 rotates on one side of the fixed disk 501. The pulling rod 518 is inserted into the arc-shaped groove 517. The position-changing wheel 513 and the detection disk 401 are located on the same rotating plane, and the position-changing wheel 513 rotates in the limit arc groove 402 and limits the detection disk 401.

[0020] The working principle of the present invention is as follows: When the present invention is in use, multiple temperature detection points 302 are provided on the wind turbine nacelle 301. A first electrical contact 303 is elastically pressed against the temperature detection point 302 by a pressing spring rod 304. During actual use, a plurality of temperature probes 405 are provided on the detection disk 401. The temperature probes 405 face the unit bearing 200 through the detection gap 305 for detection. Although a plurality of temperature probes 405 are provided on the detection disk 401, only the temperature probe 405 facing the temperature detection point 302 can be powered on, and the rest are in an idle standby state. Because when the second electrical contact 404 on the temperature probe 405 rotates to the first electrical contact 303 on the temperature detection point 302, through the action of the pressing spring rod 304, the first electrical contact 303 and the second electrical contact 404 are in contact to complete electrical connection. In this way, the temperature probe 405 at the temperature detection point 302 is powered on for detection, while the temperature probes 405 that do not face the temperature detection point 302 will be in an idle state. Through this design, when the temperature detection of a certain point on the unit bearing 200 is abnormal, it is difficult to distinguish whether the temperature probe 405 is damaged or the actual temperature of the unit bearing 200 is abnormal. By rotating the temperature detection disk assembly 400, the idle temperature probes 405 on the temperature detection disk assembly 400 are rotated and replaced, so that the idle temperature probe 405 replaces the working temperature probe 405. If the temperature is still abnormal after the idle temperature probe 405 is powered on, it indicates that the temperature of this point on the unit bearing 200 is truly abnormal. Moreover, the temperature detection disk assembly 400 can be rotated again to realize the replacement of the idle temperature probe 405, thereby realizing the detection of the same point on the unit bearing 200 by replacing the probe. At the same time, if it is detected that a certain temperature probe 405 in use is damaged or loses the ability to collect data, through the rotation of the temperature detection disk assembly 400, the damaged temperature probe 405 can also be replaced, avoiding workers from climbing high for maintenance and replacement.

[0021] On the basis of the above, when encountering abnormal temperature detection, the electromagnet 505 is energized, and the electromagnet 505 pushes the gear arm 510 through the first support platform 506, and the gear arm 510 realizes the rotation of the drive disk 504 on the fixed disk 501 through the gear wheel 503. Since the pulling rod 518 is inserted in the arc groove 517, when the drive disk 504 rotates, multiple contact arc plates 502 are synchronously extended to form an expansion wheel mechanism. When the follow-up drive wheel assembly 500 forms an expansion wheel, the contact arc plate 502 contacts the outer wall of the wind wheel shaft 102, and the rotation of the wind wheel shaft 102 will be The expansion resistance of 502 drives the overall rotation of the follow-up drive wheel assembly 500. When the follow-up drive wheel assembly 500 rotates as a whole, it will drive the rotation of the temperature detection disk assembly 400, thereby realizing the transposition detection between the temperature probes 405 on the temperature detection disk assembly 400. The rotation of the follow-up drive wheel assembly 500 of the present invention is achieved by rotating the wind wheel shaft 102. This technical design is achieved by energizing the electromagnet 505. When the follow-up drive wheel assembly 500 and the temperature detection disk assembly 400 are not required to rotate, it is only necessary to cut off the power to the electromagnet 505. It is convenient to use and easy to operate.

[0022] On the basis of the above, when the follower driving wheel assembly 500 rotates, the transposition wheel 513 on the follower driving wheel assembly 500 rotates, the transposition wheel 513 and the detection disk 401 are located on the same rotating plane, and the transposition wheel 513 rotates in the limiting arc groove 402 and limits the detection disk 401. At the same time, the transposition rod 511 on the transposition wheel 513 performs intermittent transposition toggling of the detection disk 401 through the toggling arm groove 403. Through this intermittent transposition toggling, on the one hand, when multiple temperature probes 405 are transposed, the idle temperature probe 405 can be accurately transposed to the detection position of the temperature detection point 302. On the other hand, it can be ensured that after the transposition, the temperature probe 405 can have a dwelling gap, which is convenient for the temperature probe 405 to be used for collecting the temperature of the unit bearing 200.

[0023] On the basis of the above, when the follower drive wheel assembly 500 realizes the gap rotation of the temperature detection disk assembly 400 by resisting the unit bearing 200, when the temperature detection disk assembly 400 rotates, the front end of the temperature probe 405 will rotate through the wiping pad 307 on the wiping arm 306. In this way, the wiping self-cleaning of the front end of the temperature probe 405 is achieved.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An abnormal bearing temperature detection device for a wind turbine, comprising a wind wheel assembly (100), characterized in that: The wind wheel assembly (100) is rotatably arranged on the wind turbine nacelle assembly (300) through the unit bearing (200). A temperature detection disc assembly (400) for temperature detection of the unit bearing (200) is rotatably arranged in the wind turbine nacelle assembly (300), and a follow-up drive wheel assembly (500) for driving the temperature detection disc assembly (400) to perform transposition detection is rotatably arranged in the wind turbine nacelle assembly (300). An extended follow-up drive wheel structure is formed on the follow-up drive wheel assembly (500). Through the auxiliary drive of the follow-up drive wheel assembly (500), the rotation of the wind wheel assembly (100) is converted into a fixed-point transposition structure of the temperature detection disc assembly (400). Through the fixed-point transposition structure of the temperature detection disc assembly (400), probe replacement detection at the same point of the unit bearing (200) is realized, and self-cleaning of the detection probe is synchronously realized during probe replacement detection.

2. The abnormal bearing temperature detection device for a wind turbine unit according to claim 1, wherein: The wind wheel assembly (100) includes a wind wheel (101), and a wind wheel shaft rod (102) is arranged on the wind wheel (101); The wind turbine nacelle assembly (300) includes a wind turbine nacelle (301). A plurality of wiping arms (306) with wiping pads (307) are fixedly arranged on the inner wall of the wind turbine nacelle (301), and a plurality of first electric contacts (303) mounted on a tension spring rod (304) are fixedly arranged on the inner wall of the wind turbine nacelle (301). The tension spring rod (304) is opposite to the temperature detection point (302). A vertical arm plate (308) is fixedly arranged on the inner wall of the wind turbine nacelle (301), and a detection gap (305) is formed between the two wiping arms (306).

3. The abnormal bearing temperature detection device for a wind turbine unit according to claim 2, wherein: The temperature detection disc assembly (400) includes a detection disc (401). A plurality of temperature probes (405) with second electric contacts (404) are fixedly arranged on one side of the detection disc (401) through a support rod, and limiting arc grooves (402) and toggle arm grooves (403) are arranged on the detection disc (401) at intervals; The follow-up drive wheel assembly (500) includes a fixed disk (501). A connecting shaft rod (516) is rotatably arranged in the middle of the fixed disk (501). On both sides of the connecting shaft rod (516), a gear wheel (503) and a drive disk (504) are fixedly arranged respectively. A plurality of arc-shaped grooves (517) are formed in the drive disk (504). A plurality of pull arms (519) with pull rods (518) are slidably arranged on the fixed disk (501) through sliding grooves. A contact arc plate (502) is fixedly arranged at the distal end of the pull arm (519). A U-shaped frame (515) with a transposition shaft rod (514) is fixedly arranged on the back of the fixed disk (501). An electromagnet (505) and a second support platform (509) are fixedly arranged on the back of the fixed disk (501). A gear tooth arm (510) is slidably arranged on the back of the fixed disk (501). A magnet (507) is fixedly arranged on the back of the gear tooth arm (510) through a first support platform (506). A spring (508) is fixedly arranged between the first support platform (506) and the second support platform (509). A transposition wheel (513) with a transposition arm (512) is fixedly arranged at the distal end of the transposition shaft rod (514). A transposition rod (511) is fixedly arranged at the distal end of the transposition arm (512).

4. The abnormal bearing temperature detection device for a wind turbine unit according to claim 3, wherein: The wind wheel shaft rod (102) is rotatably arranged on the wind turbine nacelle (301) through a unit bearing (200). The detection disk (401) on the temperature detection disk assembly (400) is rotatably arranged on the inner wall of the wind turbine nacelle (301) through a bearing.

5. The abnormal bearing temperature detection device for a wind turbine unit according to claim 3, wherein: The transposition shaft rod (514) is rotatably arranged on the vertical arm plate (308) through a bearing. The gear tooth arm (510) is slidably arranged on the fixed disk (501) through a slider and a sliding groove. The gear tooth arm (510) meshes with the gear wheel (503).

6. The abnormal bearing temperature detection device for a wind turbine unit according to claim 3, characterized in that: The drive disk (504) rotates on one side of the fixed disk (501). The pull rod (518) is inserted into the arc-shaped groove (517).

7. The abnormal bearing temperature detection device for a wind turbine unit according to claim 3, wherein: The temperature probe (405) faces the unit bearing (200) through a detection gap (305) for detection. The second electrical contact (404) on the temperature probe (405) and the first electrical contact (303) at the temperature detection point (302) are on the same rotation plane. When the second electrical contact (404) contacts the first electrical contact (303), the temperature probe (405) is powered on.

8. The abnormal bearing temperature detection device for a wind turbine according to claim 3, characterized in that: The transposition wheel (513) and the detection disk (401) are on the same rotation plane, and the transposition wheel (513) rotates in the limit arc groove (402) to limit the detection disk (401).

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