CN113804441A - On-line monitoring method for cracks of variable-pitch bearing - Google Patents
On-line monitoring method for cracks of variable-pitch bearing Download PDFInfo
- Publication number
- CN113804441A CN113804441A CN202111087815.4A CN202111087815A CN113804441A CN 113804441 A CN113804441 A CN 113804441A CN 202111087815 A CN202111087815 A CN 202111087815A CN 113804441 A CN113804441 A CN 113804441A
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- pitch bearing
- sleeve ring
- cracks
- variable pitch
- wireless
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses an on-line monitoring method for cracks of a variable pitch bearing, which comprises the steps of firstly, measuring the inner circumference of an inner sleeve ring and the outer circumference of an outer sleeve ring of the variable pitch bearing at different temperatures by adopting a wireless temperature displacement integrated sensor as basic data, then, carrying out temperature monitoring on the sleeve ring by adopting the wireless temperature displacement integrated sensor, carrying out circumference monitoring on the inner surface of the inner sleeve ring and the outer surface of the outer sleeve ring, transmitting the data to a computer in a wireless mode, and judging that the variable pitch bearing ring has cracks when the circumference changes by more than 5mm by comparing the real-time circumference at the same temperature with the circumference in the basic data.
Description
Technical Field
The invention belongs to the field of nondestructive testing, and particularly relates to an online monitoring method for cracks of a variable-pitch bearing.
Background
At present, most of wind power variable pitch bearings are detected by climbing up the top end of a tower drum by workers after shutdown, and the detection is inconvenient and dangerous; and the inspection can be carried out only when the wind power is stopped, and production accidents can be caused due to the fault of a variable-pitch bearing during the running of the wind power.
Disclosure of Invention
The invention provides an online monitoring method for cracks of a variable pitch bearing, aiming at monitoring the state of the variable pitch bearing and better guaranteeing the safe production of electric power.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for monitoring cracks of a variable-pitch bearing on line comprises the following steps:
firstly, converting the curvilinear motion of a circle into linear motion through module conversion, thereby realizing the monitoring of the perimeter of a variable pitch bearing through a displacement sensor for measuring circular motion;
monitoring an off-line variable pitch bearing inner sleeve ring and an off-line variable pitch bearing outer sleeve ring by using a wireless temperature and displacement integrated sensor, converting the environmental temperature, transmitting data to a computer through a wireless receiving device, and obtaining the perimeter of the variable pitch bearing inner sleeve ring and the perimeter of the variable pitch bearing outer sleeve ring at different temperatures as basic data;
monitoring the inner sleeve ring and the outer sleeve ring of the in-service variable pitch bearing by using a wireless temperature and displacement integrated sensor, and transmitting real-time data to a computer through a wireless receiving device;
and fourthly, comparing the real-time data and the basic data at the same temperature through a computer, and judging that the lantern ring has cracks when the change of the circumference exceeds 5 mm.
Through the module conversion, will measure circular motion's displacement sensor and convert the sensor of measuring the girth.
A plurality of wireless temperature and displacement integrated sensors are used, the average temperature is obtained, and the accuracy of data is enhanced.
The wireless temperature and displacement integrated sensor is used, and the signal is acquired through the wireless receiving device, so that the wireless transmission of data is realized, and the wireless temperature and displacement integrated sensor is convenient to use on site.
The invention has the following effects:
according to the invention, circular curvilinear motion of a circle is converted into linear motion through module conversion, and perimeter change of the lantern ring can be monitored through the displacement sensor.
According to the invention, wireless transmission of data is realized through the wireless receiving and transmitting device, and convenience of a site is enhanced.
According to the invention, the real-time monitoring of the state of the variable-pitch bearing is realized through the real-time analysis of the computer, and the real-time monitoring of cracks is realized.
Drawings
FIG. 1 is a schematic diagram of an online monitoring method for cracks of a pitch bearing.
Description of reference numerals:
the sensor comprises a variable pitch bearing outer sleeve ring 1, a variable pitch bearing inner sleeve ring 2 and a wireless temperature and displacement integrated sensor 3.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, according to the online monitoring method for the cracks of the pitch bearing, firstly, circular motion is converted into linear motion through module conversion, so that the perimeter of the pitch bearing can be monitored through a displacement sensor. Secondly, monitoring the internal circumference of the off-line variable pitch bearing inner sleeve ring 2 and the external circumference of the variable pitch bearing outer sleeve ring 1 by using the wireless temperature and displacement integrated sensor 3, changing the environmental temperature, receiving data by using a wireless receiving device, and obtaining basic data of the internal circumference of the variable pitch bearing inner sleeve ring and the external circumference of the variable pitch bearing outer sleeve ring at different temperatures. Then, the wireless temperature and displacement integrated sensor is installed on the online variable pitch bearing, the data monitored in real time are transmitted to a computer through a wireless receiving device, the real-time perimeter at the same temperature is compared with the perimeter in the basic data in the computer, and when the perimeter changes by more than 5mm, the fact that cracks are generated in the variable pitch bearing ring can be judged.
As shown in fig. 1, in this example, four wireless temperature and displacement integrated sensors uniformly spaced along the outer ring 1 and the inner ring 2 of the pitch bearing are used to obtain an average temperature, so as to enhance the accuracy of data.
Claims (4)
1. The method for monitoring the cracks of the variable-pitch bearing on line is characterized by comprising the following steps of:
firstly, converting the curvilinear motion of a circle into linear motion through module conversion, thereby realizing the monitoring of the perimeter of a variable pitch bearing through a displacement sensor for measuring circular motion;
monitoring the circumferences of an inner sleeve ring and an outer sleeve ring of the off-line variable pitch bearing by using a wireless temperature and displacement integrated sensor, converting the environmental temperature, transmitting data to a computer through a wireless receiving device, and obtaining the circumferences of the inner sleeve ring and the outer sleeve ring of the variable pitch bearing at different temperatures as basic data;
monitoring the inner sleeve ring and the outer sleeve ring of the in-service variable pitch bearing by using a wireless temperature and displacement integrated sensor, and transmitting real-time data to a computer through a wireless receiving device;
and fourthly, comparing the real-time data and the basic data at the same temperature through a computer, and judging that the lantern ring has cracks when the change of the circumference exceeds 5 mm.
2. The online crack monitoring method for the pitch bearing according to claim 1, wherein a displacement sensor for measuring circular motion is converted into a sensor for measuring circumference through module conversion.
3. The online monitoring method for the cracks of the pitch bearing according to claim 1, wherein a plurality of wireless temperature and displacement integrated sensors are used, the average temperature is taken, and the accuracy of data is enhanced.
4. The online monitoring method for the cracks of the variable pitch bearing according to claim 1, wherein a wireless temperature and displacement integrated sensor is used, and a wireless receiving device is used for acquiring signals, so that wireless transmission of data is realized, and the online monitoring method is convenient to use on site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087815.4A CN113804441A (en) | 2021-09-16 | 2021-09-16 | On-line monitoring method for cracks of variable-pitch bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087815.4A CN113804441A (en) | 2021-09-16 | 2021-09-16 | On-line monitoring method for cracks of variable-pitch bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113804441A true CN113804441A (en) | 2021-12-17 |
Family
ID=78895601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111087815.4A Pending CN113804441A (en) | 2021-09-16 | 2021-09-16 | On-line monitoring method for cracks of variable-pitch bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN113804441A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02263155A (en) * | 1988-12-16 | 1990-10-25 | Nippon Seiko Kk | Device and method for detecting crack of bearing mechanism |
| US4991442A (en) * | 1988-12-16 | 1991-02-12 | Nippon Seiko Kabushiki Kaisha | Method and apparatus for detecting cracks in bearings |
| JP2004347450A (en) * | 2003-05-22 | 2004-12-09 | Bridgestone Corp | Device and method for measuring perimeter of mold dram |
| CN105102954A (en) * | 2013-03-21 | 2015-11-25 | Osmos股份有限公司 | Method for monitoring deformation of rotating element via monitoring device employing optical fibre, and wind turbine equipped with such device |
| CN105765361A (en) * | 2013-11-25 | 2016-07-13 | 斯凯孚公司 | Bearing monitoring apparatus and method |
| CN106679977A (en) * | 2017-01-03 | 2017-05-17 | 国电联合动力技术有限公司 | Wind turbine generator variable pitch bearing monitoring method and apparatus |
| CN107448362A (en) * | 2016-05-31 | 2017-12-08 | 北京金风科创风电设备有限公司 | State monitoring method and device for slewing bearing and wind generating set |
| CN208669870U (en) * | 2018-04-28 | 2019-03-29 | 中山市固信雅木制品科技有限公司 | A kind of induction control system for bearing |
| CN212079519U (en) * | 2020-05-27 | 2020-12-04 | 西昌飓源风电开发有限公司 | Monitoring device for deformation of variable-pitch bearing of wind turbine generator |
-
2021
- 2021-09-16 CN CN202111087815.4A patent/CN113804441A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02263155A (en) * | 1988-12-16 | 1990-10-25 | Nippon Seiko Kk | Device and method for detecting crack of bearing mechanism |
| US4991442A (en) * | 1988-12-16 | 1991-02-12 | Nippon Seiko Kabushiki Kaisha | Method and apparatus for detecting cracks in bearings |
| JP2004347450A (en) * | 2003-05-22 | 2004-12-09 | Bridgestone Corp | Device and method for measuring perimeter of mold dram |
| CN105102954A (en) * | 2013-03-21 | 2015-11-25 | Osmos股份有限公司 | Method for monitoring deformation of rotating element via monitoring device employing optical fibre, and wind turbine equipped with such device |
| CN105765361A (en) * | 2013-11-25 | 2016-07-13 | 斯凯孚公司 | Bearing monitoring apparatus and method |
| CN107448362A (en) * | 2016-05-31 | 2017-12-08 | 北京金风科创风电设备有限公司 | State monitoring method and device for slewing bearing and wind generating set |
| CN106679977A (en) * | 2017-01-03 | 2017-05-17 | 国电联合动力技术有限公司 | Wind turbine generator variable pitch bearing monitoring method and apparatus |
| CN208669870U (en) * | 2018-04-28 | 2019-03-29 | 中山市固信雅木制品科技有限公司 | A kind of induction control system for bearing |
| CN212079519U (en) * | 2020-05-27 | 2020-12-04 | 西昌飓源风电开发有限公司 | Monitoring device for deformation of variable-pitch bearing of wind turbine generator |
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