CN110778463A - Fan blade bolt fracture monitoring and protecting method and device - Google Patents
Fan blade bolt fracture monitoring and protecting method and device Download PDFInfo
- Publication number
- CN110778463A CN110778463A CN201910877394.1A CN201910877394A CN110778463A CN 110778463 A CN110778463 A CN 110778463A CN 201910877394 A CN201910877394 A CN 201910877394A CN 110778463 A CN110778463 A CN 110778463A
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- Prior art keywords
- bolt
- fan
- fan blade
- wire
- bolt head
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 230000005484 gravity Effects 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims description 31
- 239000013307 optical fiber Substances 0.000 claims description 30
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000012806 monitoring device Methods 0.000 claims description 9
- 238000010248 power generation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
-
- 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
-
- 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
- Y02E10/728—Onshore wind turbines
Abstract
The invention discloses a fan blade bolt fracture monitoring and protecting method, wherein a fan blade is assembled on a hub of a fan and is fixedly connected with the hub through a bolt, and the method is characterized in that a closed circuit formed by connecting a power supply and a load through a wire is arranged, when the wire is laid, the wire passes through each fan blade bolt, the wire is fixed on the bolt head of each fan blade through a fastener, a current detection device is arranged in the closed circuit, and a detected current signal is sent to a fan main control in a logic expression mode of '1' and '0'; when any bolt is broken, the broken bolt head falls out of the bolt hole of the hub under the action of the gravity of the bolt head and the motion inertia of the wind wheel, the wire fixed on the bolt head is torn off, the current of the closed circuit disappears, the logic of a signal sent to the fan master control by the current detection device is '0', the fan master control controls the fan to stop, major accidents are avoided, and the operation safety of the fan is ensured.
Description
Technical Field
The invention belongs to the wind power generation technology, relates to the fan safety protection technology, and particularly relates to a fan blade bolt fracture monitoring protection method and device.
Background
At present, with the continuous deep development of domestic wind power generation resources, more and more wind power generation sets are operated in a grid-connected mode, the power is higher and higher, and the safe and stable operation of the sets faces increasingly severe examination. Especially, the connecting bolt of the blade and the hub bears complicated alternating load, and the fatigue life of the bolt is difficult to accurately calculate by the conventional design method. Simply increasing the fatigue safety margin results in increased design costs. At the early stage of bolt fracture, if not discover in time, the unit continues to take ill operation, then can accelerate more bolt fracture, leads to serious consequences such as blade drop, fall the machine.
Disclosure of Invention
Aiming at the problems, the invention provides a method and a device for monitoring and protecting the fracture of a bolt of a fan blade. The fracture condition of any connecting bolt for connecting the blade of the wind generating set and the hub of the wind generating set can be detected in time, and the main control of the fan immediately takes corresponding measures to ensure the operation safety of the set.
The technical scheme of the invention is as follows:
a fan blade bolt fracture monitoring and protecting method is characterized in that a closed circuit formed by connecting a power supply and a load through a wire is arranged, when the wire is laid, the wire passes through each fan blade bolt, the wire is fixed on the bolt head of each fan blade through a fastener, a current detection device is arranged in the closed circuit, and detected current signals are sent to a fan main controller in a logic expression mode of '1' and '0'; when any bolt is broken, the broken bolt head falls out of the bolt hole of the hub under the action of the gravity of the bolt head and the motion inertia of the wind wheel, the wire fixed on the bolt hole is torn off, the current of the closed circuit disappears, the logic of a signal sent to the fan master control by the current detection device is '0', and the fan master control controls the fan to stop.
The method is characterized in that a closed circuit formed by connecting a power supply and a load through a wire is arranged, when the wire is laid, the wire passes through each fan blade bolt, the wire is fixed on the bolt head of each fan blade through a fastener, a voltage detection device is arranged in the closed circuit and used for detecting the terminal voltage of the load, and detected voltage signals are sent to the main controller of the fan in a logic expression mode of '1' and '0'; when any bolt is broken, the broken bolt head falls out of the bolt hole of the hub under the action of the gravity of the bolt head and the motion inertia of the wind wheel, the wire fixed on the bolt head is torn off, the voltage of the load end disappears, the logic of a signal sent to the fan master control by the voltage detection device is '0', and the fan master control controls the fan to stop.
The method is characterized in that an optical transmission channel consisting of a light source and optical fibers is arranged, when the optical fibers are laid, the optical fibers pass through each fan blade bolt, the optical fibers are fixed on the bolt head of each fan blade by fasteners, and the tail end of the optical transmission channel is provided with a light detection device for detecting optical signals at the tail end of the optical fibers and sending the detected optical signals to a fan master controller in a logic expression mode of '1' and '0'; when any bolt is broken, the broken bolt head falls out of the bolt hole of the hub under the action of the gravity of the bolt head and the motion inertia of the wind wheel, the optical fiber fixed on the bolt hole is torn off, the optical signal disappears, the logic of the signal sent to the fan main control by the optical detection device is '0', and the fan main control controls the fan to stop.
A fan blade bolt fracture monitoring device comprises a closed circuit formed by connecting a power supply and a load through a wire, wherein the wire passes through each fan blade bolt, and is fixed on the head of each fan blade bolt through a fastener, a current detection device is arranged in the closed circuit, and detected current signals can be sent to a fan main controller in a logic expression mode of '1' and '0'.
The other fan blade bolt breakage monitoring device comprises a closed circuit formed by connecting a power supply and a load through a wire, wherein the wire passes through each fan blade bolt, and is fixed on each fan blade bolt head through a fastener, a voltage detection device is arranged in the closed circuit and used for detecting the end voltage of the load and sending detected voltage signals to a fan main controller in a logic expression mode of '1' and '0'.
The fan blade bolt breakage monitoring device comprises an optical transmission channel consisting of a light source and optical fibers, wherein the optical fibers pass through each fan blade bolt, the optical fibers are fixed on the bolt head of each fan blade through a fastener, and the tail end of the optical transmission channel is provided with a light detection device for detecting optical signals at the tail end of the optical fibers and sending the detected optical signals to a fan main controller in a logic expression mode of '1' and '0'.
The invention has the beneficial technical effects that:
the fan bolt fracture condition can be timely and accurately detected, the main control adopts corresponding treatment measures, major accidents are avoided, and the running safety of the fan is ensured.
Drawings
FIG. 1 is a structural view of a detecting device of the present invention
FIG. 2 is another structural view of the detecting device of the present invention
FIG. 3 is a view showing still another structure of the detecting unit of the present invention.
Detailed Description
Example one
Referring to fig. 1, the fan blade bolt fracture monitoring device includes a closed circuit formed by connecting a power supply and a load through a wire, wherein the wire passes through each fan blade bolt, and is fixed on each fan blade bolt head through a fastener, and a current detection device is arranged in the closed circuit and can send detected current signals to a fan main controller in a logic expression mode of '1' and '0'.
Example two
Referring to fig. 2, the fan blade bolt fracture monitoring device includes a closed circuit formed by connecting a power supply and a load through a wire, wherein the wire passes through each fan blade bolt, and is fixed on each fan blade bolt head through a fastener, and a voltage detection device is arranged in the closed circuit and is used for detecting the terminal voltage of the load and sending detected voltage signals to a fan main controller in a logic expression mode of '1' and '0'.
EXAMPLE III
Referring to fig. 3: the fan blade bolt fracture monitoring device comprises an optical transmission channel consisting of a light source and optical fibers, wherein the optical fibers pass through each fan blade bolt, the optical fibers are fixed on the bolt head of each fan blade through a fastener, and the tail end of the optical transmission channel is provided with an optical detection device for detecting optical signals at the tail end of the optical fibers and sending the detected optical signals to a fan master control in a logic expression mode of '1' and '0'.
Example four
Referring to fig. 1: the fan blade bolt fracture monitoring and protecting method is characterized in that a closed circuit formed by connecting a power supply and a load through a wire is arranged, when the wire is laid, the wire passes through each fan blade bolt, the wire is fixed on the bolt head of each fan blade through a fastener, a current detecting device is arranged in the closed circuit, and detected current signals are sent to a fan main controller in a logic expression mode of '1' and '0'; when any bolt is broken, the broken bolt head falls out of the bolt hole of the hub under the action of the gravity of the bolt head and the motion inertia of the wind wheel, the wire fixed on the bolt hole is torn off, the current of the closed circuit disappears, the logic of a signal sent to the fan master control by the current detection device is '0', and the fan master control controls the fan to stop.
EXAMPLE five
Referring to fig. 2: the fan blade bolt fracture monitoring and protecting method is characterized in that a closed circuit formed by connecting a power supply and a load through a wire is arranged, when the wire is laid, the wire passes through each fan blade bolt and is fixed on the bolt head of each fan blade through a fastener, a voltage detection device is arranged in the closed circuit and used for detecting the end voltage of the load and sending a detected voltage signal to a fan main controller in a logic expression mode of '1' and '0'; when any bolt is broken, the broken bolt head falls out of the bolt hole of the hub under the action of the gravity of the bolt head and the motion inertia of the wind wheel, the wire fixed on the bolt head is torn off, the voltage of the load end disappears, the logic of a signal sent to the fan master control by the voltage detection device is '0', and the fan master control controls the fan to stop.
EXAMPLE six
Referring to fig. 3: the fan blade bolt fracture monitoring and protecting method is characterized in that an optical transmission channel consisting of a light source and optical fibers is arranged, when the optical fibers are laid, the optical fibers pass through each fan blade bolt, the optical fibers are fixed on the bolt head of each fan blade by fasteners, and the tail end of the optical transmission channel is provided with a light detection device for detecting optical signals at the tail end of the optical fibers and sending the detected optical signals to a main controller of the fan in a logic expression mode of '1' and '0'; when any bolt is broken, the broken bolt head falls out of the bolt hole of the hub under the action of the gravity of the bolt head and the motion inertia of the wind wheel, the optical fiber fixed on the bolt hole is torn off, the optical signal disappears, the logic of the signal sent to the fan main control by the optical detection device is '0', and the fan main control controls the fan to stop.
Claims (6)
1. A fan blade bolt fracture monitoring and protecting method is characterized in that a closed circuit formed by connecting a power supply and a load through a wire is arranged, when the wire is laid, the wire passes through each fan blade bolt, the wire is fixed on the bolt head of each fan blade through a fastener, a current detection device is arranged in the closed circuit, and detected current signals are sent to a fan main controller in a logic expression mode of '1' and '0'; when any bolt is broken, the broken bolt head falls out of the bolt hole of the hub under the action of the gravity of the bolt head and the motion inertia of the wind wheel, the wire fixed on the bolt hole is torn off, the current of the closed circuit disappears, the logic of a signal sent to the fan master control by the current detection device is '0', and the fan master control controls the fan to stop.
2. A fan blade bolt fracture monitoring and protecting method is characterized in that a closed circuit formed by connecting a power supply and a load through a wire is arranged, when the wire is laid, the wire passes through each fan blade bolt, the wire is fixed on the bolt head of each fan blade through a fastener, a voltage detection device is arranged in the closed circuit and used for detecting the end voltage of the load, and detected voltage signals are sent to a fan main controller in a logic expression mode of '1' and '0'; when any bolt is broken, the broken bolt head falls out of the bolt hole of the hub under the action of the gravity of the bolt head and the motion inertia of the wind wheel, the wire fixed on the bolt head is torn off, the voltage of the load end disappears, the logic of a signal sent to the fan master control by the voltage detection device is '0', and the fan master control controls the fan to stop.
3. A fan blade bolt fracture monitoring and protecting method is characterized in that an optical transmission channel composed of a light source and optical fibers is arranged, when the optical fibers are laid, the optical fibers pass through each fan blade bolt, the optical fibers are fixed on the bolt head of each fan blade through a fastener, and a light detection device is arranged at the tail end of the optical transmission channel and used for detecting optical signals at the tail end of the optical fibers and sending the detected optical signals to a main controller of a fan in a logic expression mode of '1' and '0'; when any bolt is broken, the broken bolt head falls out of the bolt hole of the hub under the action of the gravity of the bolt head and the motion inertia of the wind wheel, the optical fiber fixed on the bolt hole is torn off, the optical signal disappears, the logic of the signal sent to the fan main control by the optical detection device is '0', and the fan main control controls the fan to stop.
4. A fan blade bolt fracture monitoring device is characterized by comprising a closed circuit formed by connecting a power supply and a load through a wire, wherein the wire passes through each fan blade bolt, and is fixed on each fan blade bolt head through a fastener, a current detection device is arranged in the closed circuit, and detected current signals can be sent to a fan main controller in a logic expression mode of '1' and '0'.
5. A fan blade bolt fracture monitoring device is characterized by comprising a closed circuit formed by connecting a power supply and a load through a wire, wherein the wire passes through each fan blade bolt, and is fixed on each fan blade bolt head through a fastener, and a voltage detection device is arranged in the closed circuit and used for detecting the terminal voltage of the load and sending detected voltage signals to a fan main controller in a logic expression mode of '1' and '0'.
6. A fan blade bolt fracture monitoring device is characterized by comprising an optical transmission channel consisting of a light source and optical fibers, wherein the optical fibers pass through each fan blade bolt, the optical fibers are fixed on the bolt head of each fan blade through a fastener, and the tail end of the optical transmission channel is provided with a light detection device for detecting optical signals at the tail end of the optical fibers and sending the detected optical signals to a fan main controller in a logic expression mode of '1' and '0'.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910877394.1A CN110778463A (en) | 2019-09-17 | 2019-09-17 | Fan blade bolt fracture monitoring and protecting method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910877394.1A CN110778463A (en) | 2019-09-17 | 2019-09-17 | Fan blade bolt fracture monitoring and protecting method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110778463A true CN110778463A (en) | 2020-02-11 |
Family
ID=69383526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910877394.1A Withdrawn CN110778463A (en) | 2019-09-17 | 2019-09-17 | Fan blade bolt fracture monitoring and protecting method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110778463A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852791A (en) * | 2020-07-30 | 2020-10-30 | 国电龙源江永风力发电有限公司 | Fracture positioning early warning method for flange connecting bolt of wind generating set |
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|---|---|---|---|---|
| JPH09159719A (en) * | 1995-12-08 | 1997-06-20 | Nissin Electric Co Ltd | Apparatus for diagnosing insulation abnormality of gas insulation electric device |
| US20120134809A1 (en) * | 2011-12-06 | 2012-05-31 | General Electric Company | System and method for detecting loads transmitted through a blade root of a wind turbine rotor blade |
| CN205228815U (en) * | 2015-12-22 | 2016-05-11 | 长安大学 | Detect device of bolt -up situation for car |
| CN205936988U (en) * | 2016-08-29 | 2017-02-08 | 新疆金风科技股份有限公司 | Wind generating set wheel hub and tower section of thick bamboo inner part drop and monitor alarm system |
| CN206192641U (en) * | 2016-09-29 | 2017-05-24 | 远景能源（江苏）有限公司 | Be used for monitoring cracked device of bolt |
| CN207008077U (en) * | 2017-07-25 | 2018-02-13 | 远景能源（江苏）有限公司 | Monitoring bolt breaking device |
| CN108089230A (en) * | 2018-01-25 | 2018-05-29 | 安徽省特种设备检测院 | A kind of screw retention detector |
| CN108490500A (en) * | 2018-05-23 | 2018-09-04 | 湘电风能有限公司 | A kind of bolt anti-fall device |
| CN108896285A (en) * | 2018-06-08 | 2018-11-27 | 远景能源（江苏）有限公司 | A kind of fastener monitoring arrangement |
| CN109322799A (en) * | 2018-11-12 | 2019-02-12 | 郭楚文 | Multi-functional wind power equipment fastener detecting device |
-
2019
- 2019-09-17 CN CN201910877394.1A patent/CN110778463A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09159719A (en) * | 1995-12-08 | 1997-06-20 | Nissin Electric Co Ltd | Apparatus for diagnosing insulation abnormality of gas insulation electric device |
| US20120134809A1 (en) * | 2011-12-06 | 2012-05-31 | General Electric Company | System and method for detecting loads transmitted through a blade root of a wind turbine rotor blade |
| CN205228815U (en) * | 2015-12-22 | 2016-05-11 | 长安大学 | Detect device of bolt -up situation for car |
| CN205936988U (en) * | 2016-08-29 | 2017-02-08 | 新疆金风科技股份有限公司 | Wind generating set wheel hub and tower section of thick bamboo inner part drop and monitor alarm system |
| CN206192641U (en) * | 2016-09-29 | 2017-05-24 | 远景能源（江苏）有限公司 | Be used for monitoring cracked device of bolt |
| CN207008077U (en) * | 2017-07-25 | 2018-02-13 | 远景能源（江苏）有限公司 | Monitoring bolt breaking device |
| CN108089230A (en) * | 2018-01-25 | 2018-05-29 | 安徽省特种设备检测院 | A kind of screw retention detector |
| CN108490500A (en) * | 2018-05-23 | 2018-09-04 | 湘电风能有限公司 | A kind of bolt anti-fall device |
| CN108896285A (en) * | 2018-06-08 | 2018-11-27 | 远景能源（江苏）有限公司 | A kind of fastener monitoring arrangement |
| CN109322799A (en) * | 2018-11-12 | 2019-02-12 | 郭楚文 | Multi-functional wind power equipment fastener detecting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852791A (en) * | 2020-07-30 | 2020-10-30 | 国电龙源江永风力发电有限公司 | Fracture positioning early warning method for flange connecting bolt of wind generating set |
| CN111852791B (en) * | 2020-07-30 | 2022-06-03 | 国电龙源江永风力发电有限公司 | Fracture positioning early warning method for flange connecting bolt of wind generating set |
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Application publication date: 20200211 |