CN108644070A - A kind of online timing detection method of wind power generating set blade blade root bolt fracture and system - Google Patents
A kind of online timing detection method of wind power generating set blade blade root bolt fracture and system Download PDFInfo
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- CN108644070A CN108644070A CN201810466778.XA CN201810466778A CN108644070A CN 108644070 A CN108644070 A CN 108644070A CN 201810466778 A CN201810466778 A CN 201810466778A CN 108644070 A CN108644070 A CN 108644070A
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- blade root
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- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000004458 analytical method Methods 0.000 claims description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 206010017076 Fracture Diseases 0.000 description 55
- 208000010392 Bone Fractures Diseases 0.000 description 51
- 238000012544 monitoring process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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- 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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- 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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/32—Wind speeds
-
- 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
Abstract
A kind of online timing detection method of wind power generating set blade blade root bolt fracture, includes the following steps：A) pass through the real-time wind speed size of air velocity transducer measuring point；B) by analyzing real-time wind speed size, when wind speed is less than 3m/s, transmission blade active variable pitch instruction, change propeller angle is not less than 12h into 360, the twice time interval of variable pitch；C) in blade pitch process, the pulse signal that the contactless inductance sensor in side by being installed on wheel hub blade blade root flange face generates acquires the fracture information of bolt；D) pulse signal is handled, analyzes the breaking state of bolt；E) when bolt fracture occurs in discovery blade, then unit is alerted and is shut down, to carry out the replacement of bolt.And provide a kind of online timing detecting system of wind power generating set blade blade root bolt fracture.The present invention is timely and effective to find the fracture of Wind turbines blade blade root bolt, and liberates the workload of live operation maintenance personnel.
Description
Technical field
The invention belongs to wind-powered electricity generation field, it is related to a kind of Wind turbines blade blade root bolt fracture method for real-time monitoring and system
Background technology
With further going deep into for wind-power market development, Wind turbines are in the trend development to high tower and long blade.When
Before, Some Domestic wind power plant project has applied the long blade of rotor diameter 140m, and further to 150 meters, and 160 meters are become
Gesture develops.With increasingly longer, the blade safety peace to unit entirety higher and higher to the concern of blade safety of blade length
The influence of full property is increasing.Currently, the blade blade root bolt of part of the manufacturer has occurred that erratic behavior bolt head rupture, gives
The operation of Wind turbines brings unpredictable potential security risk.The inspection of bolt fracture is essentially consisted at present artificial
Regular inspection, this gives live operation maintenance personnel to increase a large amount of workload, and inspects periodically usually two days and checked once to three talentes,
It cannot timely find the fracture of bolt.
Invention content
The fracture of Wind turbines blade blade root bolt is found in order to timely and effective, and liberates the work of live operation maintenance personnel
Amount, a kind of online timing detection method of Wind turbines blade blade root bolt fracture of present invention offer and system.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of online timing detection method of wind power generating set blade blade root bolt fracture, the detection method includes following
Step：
A) by air velocity transducer, real-time wind speed size is measured, and transfer data to master control system；
B) master control system is by analyzing real-time wind speed size, and when wind speed is less than 3m/s, transmission blade active variable pitch instructs,
Change propeller angle is not less than 12h into 360, the twice time interval of variable pitch；
C) in blade pitch process, the contactless inductance sensor production in side by being installed on wheel hub blade blade root flange face
Raw pulse signal acquires the fracture information of bolt；
D) by being installed on the control module of wind-powered machine unit hub side, pulse signal is handled, the disconnected of bolt is analyzed
State is split, the parameter of the breaking state includes the number of bolt fracture and the accurate location of bolt fracture；
E) the bolt fracture state parameter that analysis obtains is transferred to master control system by hub side control module, when discovery blade
There is bolt fracture, then unit is alerted and shut down, to carry out the replacement of bolt.
Further, in the step b), only it is less than 3m/s when wind friction velocity meets, and the variable pitch time is more than 12 small twice
When, master control system just sends out variable pitch instruction, carries out 360 degree of active variable pitch.
In the step c), one piece blade only installs a noncontacting proximity sensor.
In the step d), the hub side control module is by following logic come the analysis to bolt fracture state：
1) far from bolt head when noncontacting proximity sensor is initially installed, and first on the right side of noncontacting proximity sensor is marked
Bolt is 1# bolts, and so on, N roots bolt altogether；
2) when blade variable pitch, when blade root bolt is inswept noncontacting proximity sensor, hub side control module is to contactless
The pulse that sensor generates carries out stored count, counts since the 0 of initial position；
3) variable pitch, umber of pulse add up blade in the direction of the clock；
4) if the time interval between pulse accumulative total k-1 and k is more thanThen bolt head occurs for k-th of bolt
Fracture, k≤N, α are rupture factor, and ω is pitch rate；If multiple bolt fractures occur in one piece blade pitch process,
Count current fracture number be i, currently detected pulse accumulative total be n, n≤N, then n-th+i-1 bolts be broken.
The method can monitor the number of every blade blade root bolt fracture in real time, and the tool of bolt fracture is accurately positioned
Body position.
A kind of online timing detecting system of Wind turbines blade blade root bolt fracture, the system comprises：
Air velocity transducer, the size for measuring real-time wind speed；
Noncontacting proximity sensor generates pulse signal, acquires the fracture information of bolt；
Control module analyzes the breaking state of current blade blade root bolt for handling pulse signal, described disconnected
The parameter for splitting state includes the number of bolt fracture and the accurate location of bolt fracture；
Master control system, the blade leaf for sending variable pitch instruction according to wind regime condition and reception control module transmits
Root bolt fracture state parameter, when bolt fracture occurs in discovery blade, then unit is alarmed and is shut down, to carry out bolt more
It changes.
The air velocity transducer is installed on above wind turbine cabin.
The noncontacting proximity sensor is fixed on by wheel hub blade blade root flange face.
The control module is located in hub side pitch control cabinet, realizes that data pass in a communication manner with master control system
It is defeated.
The master control system is located in engine room control cabinet.
Beneficial effects of the present invention are mainly manifested in：The fracture monitoring of Wind turbines blade blade root bolt is realized, simultaneously
The position of bolt fracture can will be accurately positioned, can bolt fracture information be fed back into master control system in time, so as to live O＆M
Personnel have found in time, and are carried out in time with changing guarantee unit safety.
Description of the drawings
A kind of online timing detecting system schematic diagrams of wind power generating set blade blade root bolt fracture of Fig. 1
Fig. 2 one piece blade noncontacting proximity sensor scheme of installation
Fig. 3 bolt fractures periodically test and analyze control flow chart online
Specific implementation mode
The present invention is described further below in conjunction with the accompanying drawings.
- Fig. 3 referring to Fig.1, a kind of online timing detection method of wind power generating set blade blade root bolt fracture, the detection
Method includes the following steps：
A) by air velocity transducer, real-time wind speed size is measured, and transfer data to master control system；
B) master control system is by analyzing real-time wind speed size, and when wind speed is less than 3m/s, transmission blade active variable pitch instructs,
Change propeller angle is not less than 12h into 360, the twice time interval of variable pitch；
C) in blade pitch process, the contactless inductance sensor production in side by being installed on wheel hub blade blade root flange face
Raw pulse signal acquires the fracture information of bolt；
D) by being installed on the control module of wind-powered machine unit hub side, pulse signal is handled, bolt at analysis
The parameter of breaking state, the breaking state includes the number of bolt fracture and the accurate location of bolt fracture；
E) the bolt fracture state parameter that analysis obtains is transferred to master control system by hub side control module, when discovery blade
There is bolt fracture, then unit is alerted and shut down, to carry out the replacement of bolt.
Further, in the step b), only it is less than 3m/s when wind friction velocity meets, and the variable pitch time is more than 12 small twice
When, master control system just sends out variable pitch instruction, carries out 360 degree of active variable pitch.
In the step c), one piece blade only installs a noncontacting proximity sensor.
In the step d), the hub side control module is by following logic come the analysis to bolt fracture state：
1) far from bolt head when noncontacting proximity sensor is initially installed, and first on the right side of noncontacting proximity sensor is marked
Bolt is 1# bolts, and so on, N roots bolt altogether；
2) when blade variable pitch, when blade root bolt is inswept noncontacting proximity sensor, hub side control module is to contactless
The pulse that sensor generates carries out stored count, counts since the 0 of initial position；
3) variable pitch, umber of pulse add up blade in the direction of the clock；
4) if the time interval between pulse accumulative total k-1 and k is more thanThen bolt head occurs for k-th of bolt
Fracture, k≤N, α are rupture factor, and ω is pitch rate；If multiple bolt fractures occur in one piece blade pitch process,
Count current fracture number be i, currently detected pulse accumulative total be n, n≤N, then n-th+i-1 bolts be broken.
The method can monitor the number of every blade blade root bolt fracture in real time, and the tool of bolt fracture is accurately positioned
Body position.
A kind of online timing detecting system of Wind turbines blade blade root bolt fracture, the system comprises：
Air velocity transducer, the size for measuring real-time wind speed；
Noncontacting proximity sensor generates pulse signal, acquires the fracture information of bolt；
Control module analyzes the breaking state of current blade blade root bolt for handling pulse signal, described disconnected
The parameter for splitting state includes the number of bolt fracture and the accurate location of bolt fracture；
Master control system, the blade leaf for sending variable pitch instruction according to wind regime condition and reception control module transmits
Root bolt fracture state parameter, when bolt fracture occurs in discovery blade, then unit is alarmed and is shut down, to carry out bolt more
It changes.
A kind of wind point unit blade blade root bolt fracture real-time monitoring system of the present embodiment is as shown in Figure 1.Include mainly non-
Touch sensor 11, control module 13, main control module 14, air velocity transducer 15,12 be pitch control cabinet in figure.The control
Module receives the pulse signal of noncontacting proximity sensor transmission, handles pulse signal, fracture of the analysis when front bolt
Number and accurate fracture position, and it is transferred to main control module, main control module carries out alarm and stoppage protection.
Fig. 2 is the scheme of installation of one piece blade noncontacting proximity sensor.21 noncontacting proximity sensor in figure, 22 be blade
Blade root bolt head, 23 be mounting frame for sensor.Holder is installed on wheel hub, ensures that the distance between sensor and bolt head are protected
It holds in k mm, k values are according to depending on sensor investigative range.
Fig. 3 is that bolt fracture periodically tests and analyzes control flow chart online.It is separate when noncontacting proximity sensor is initially installed
Bolt head, and it is 1# bolts to mark first bolt on the right side of noncontacting proximity sensor, and so on, N roots bolt altogether.Work as paddle
When leaf variable pitch, when blade root bolt is inswept noncontacting proximity sensor, arteries and veins that hub side control module generates noncontacting proximity sensor
Row stored count is rushed in, is counted since the 0 of initial position.Blade presses variable pitch clockwise, and umber of pulse adds up.If pulse
Time interval between accumulative total k-1 and k is more thanThen k-th bolt occur bolt head rupture (primary fracture, k≤
N), α is rupture factor；If multiple bolt fractures occur in one piece blade pitch process, it is i to count current fracture number,
Currently detected pulse accumulative total is n (n≤N), then n-th+i-1 bolts are broken.When generation bolt fracture, master control system
System carries out shutdown report by alert, and to unit.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
The number of the noncontacting proximity sensor of one piece blade is also not necessarily limited to 1.Although having been carried out in detail to the present invention with reference to the foregoing embodiments
Thin explanation can still carry out the technical solution recorded in previous embodiment for those skilled in the art
Revision, or equivalent replacement is carried out to which part technical characteristic.All within the spirits and principles of the present invention, any made by
Revision, equivalent replacement, improvement etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of online timing detection method of wind power generating set blade blade root bolt fracture, which is characterized in that the detection side
Method includes the following steps：
A) by air velocity transducer, real-time wind speed size is measured, and transfer data to master control system；
B) master control system is by analyzing real-time wind speed size, when wind speed is less than 3m/s, transmission blade active variable pitch instruction, variable pitch
Angle is 360, and the time interval of variable pitch is not less than 12h twice；
C) in blade pitch process, what the contactless inductance sensor in side by being installed on wheel hub blade blade root flange face generated
Pulse signal acquires the fracture information of bolt；
D) by being installed on the control module of wind-powered machine unit hub side, pulse signal is handled, the fracture shape of bolt is analyzed
The parameter of state, the breaking state includes the number for referring to bolt fracture and the accurate location of bolt fracture；
E) the bolt fracture state parameter that analysis obtains is transferred to master control system by hub side control module, when discovery blade occurs
Bolt fracture, then unit alerted and shut down, to carry out the replacement of bolt.
2. a kind of online timing detection method of wind power generating set blade blade root bolt fracture as described in claim 1, special
Sign is, in the step b), only when wind friction velocity meet be less than 3m/s, and twice the variable pitch time be more than 12 hours, master control
System just sends out variable pitch instruction, carries out 360 degree of active variable pitch.
3. a kind of online timing detection method of wind power generating set blade blade root bolt fracture as claimed in claim 1 or 2,
It is characterized in that, in the step c), one piece blade only installs a noncontacting proximity sensor.
4. a kind of wind power generating set blade blade root bolt fracture timing online test method as claimed in claim 1 or 2,
It is characterized in that, in the step d), hub side control module is by following logic come the analysis to bolt fracture state：
1) far from bolt head when noncontacting proximity sensor is initially installed, and first bolt on the right side of noncontacting proximity sensor is marked
For 1# bolts, and so on, N roots bolt altogether；
2) when blade variable pitch, when blade root bolt is inswept noncontacting proximity sensor, hub side control module is to non-contact sensor
The pulse that device generates carries out stored count, counts since the 0 of initial position；
3) variable pitch, umber of pulse add up blade in the direction of the clock；
4) if the time interval between pulse accumulative total k-1 and k is more thanThen bolt head rupture, k occur for k-th of bolt
≤ N, α are rupture factor；If multiple bolt fractures occur in one piece blade pitch process, it is i to count current fracture number,
Currently detected pulse accumulative total be n, n≤N, then n-th+i-1 bolts be broken.
5. what a kind of online timing detection method of Wind turbines blade blade root bolt fracture as described in claim 1 was realized is
System, which is characterized in that the system comprises：
Air velocity transducer, the size for measuring real-time wind speed；
Noncontacting proximity sensor generates pulse signal, acquires the fracture information of bolt；
Control module analyzes the breaking state of current blade blade root bolt, the fracture shape for handling pulse signal
The parameter of state includes the number of bolt fracture and the accurate location of bolt fracture；
Master control system, the blade blade root spiral shell for sending variable pitch instruction according to wind regime condition and reception control module transmits
Bolt breaking state parameter, when bolt fracture occurs in discovery blade, then unit is alarmed and is shut down, to carry out the replacement of bolt.
6. system as claimed in claim 5, which is characterized in that the air velocity transducer is installed on above wind turbine cabin.
7. such as system described in claim 5 or 6, which is characterized in that the noncontacting proximity sensor is fixed on wheel hub blade leaf
By root flange face.
8. such as system described in claim 5 or 6, which is characterized in that the control module is located in hub side pitch control cabinet,
Data transmission is realized in a communication manner with master control system.
9. such as system described in claim 5 or 6, which is characterized in that the master control system is located in engine room control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810466778.XA CN108644070B (en) | 2018-05-16 | 2018-05-16 | Online timing detection method and system for blade root bolt fracture of wind generating set blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810466778.XA CN108644070B (en) | 2018-05-16 | 2018-05-16 | Online timing detection method and system for blade root bolt fracture of wind generating set blade |
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| Publication Number | Publication Date |
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| CN108644070A true CN108644070A (en) | 2018-10-12 |
| CN108644070B CN108644070B (en) | 2019-12-24 |
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| CN201810466778.XA Active CN108644070B (en) | 2018-05-16 | 2018-05-16 | Online timing detection method and system for blade root bolt fracture of wind generating set blade |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576455A (en) * | 2020-12-14 | 2021-03-30 | 江阴市恒润重工股份有限公司 | Wind power flange bolt pressure detection failure prevention device and detection method thereof |
| CN112648151A (en) * | 2020-12-14 | 2021-04-13 | 陕西中科启航科技有限公司 | Method for monitoring fracture of blade root bolt of wind generating set |
| CN112855465A (en) * | 2021-01-29 | 2021-05-28 | 陕西中科启航科技有限公司 | Impeller rotating speed fault-tolerant monitoring method and system based on flange gap sensor |
| CN114109740A (en) * | 2021-11-12 | 2022-03-01 | 华能如东八仙角海上风力发电有限责任公司 | Intelligent detection system and method for bolt loosening and fracture of wind driven generator |
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| Publication number | Publication date |
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| CN108644070B (en) | 2019-12-24 |
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