CN206017062U - A kind of acoustic emission detection system for Wind turbines - Google Patents
A kind of acoustic emission detection system for Wind turbines Download PDFInfo
- Publication number
- CN206017062U CN206017062U CN201620955912.9U CN201620955912U CN206017062U CN 206017062 U CN206017062 U CN 206017062U CN 201620955912 U CN201620955912 U CN 201620955912U CN 206017062 U CN206017062 U CN 206017062U
- Authority
- CN
- China
- Prior art keywords
- wind turbines
- acoustic emission
- detection system
- signal
- emission detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- 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
- F05B2260/00—Function
- F05B2260/30—Retaining components in desired mutual position
- F05B2260/301—Retaining bolts or nuts
-
- 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
- F05B2260/00—Function
- F05B2260/83—Testing, e.g. methods, components or tools therefor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0262—Confirmation of fault detection, e.g. extra checks to confirm that a failure has indeed occurred
Abstract
A kind of acoustic emission detection system for Wind turbines, including main frame, signal preamplifier and acoustic emission sensor, passes through cable connection respectively.The acoustic emission detection system for Wind turbines is provided with 16 signal preamplifiers altogether, each two signal preamplifier is one group, wherein install on wind-powered machine unit hub flange one group, the root of Wind turbines blade one group, one group of each installation in the bottom fixed connection place of the section tower of Wind turbines 4 are respectively installed.The acoustic emission detection system for Wind turbines that the utility model is provided, by arranging the Redundancy Design of 2 acoustic emission sensors in each test point, the result that two acoustic emission sensors are produced is carried out combining and sentences card, can effectively reduce and fail to report the alert, probability of happening of false alarm so that monitoring result is more accurate.Device can carry out installation and deployment on the premise of not transforming to Wind turbines, and apparatus structure is simple, high degree of automation.
Description
Technical field
The utility model is related to a kind of bolt fracture detection means, more particularly to a kind of Wind turbines based on sound emission
Internal-flange bolt break detector apparatus.
Background technology
In recent years, the installation quantity of Wind turbines is more and more, and the problem of exposed Wind turbines is also more and more therewith
Many.Wind turbines belong to heavy mechanical equipment, and for plant equipment, bolt plays vital effect.Sent out using sound
Monitoring device is penetrated, wind-powered machine unit hub, blade and tower bolt are monitored, can effectively reduce Wind turbines shutdown time
Number, in time discovery bolt fracture failure, so that improve the production efficiency and security reliability of Wind turbines.But existing wind
The acoustic emission detection system of group of motors, as acoustic emission sensor is in the harsh environments such as humiture span is big, vibrations are strong,
Cause sensor accurately perceive the acoustic emission signal of bolt fracture, and easily cause false alarm and warning failure.False alarm will
Extra work amount is brought to maintenance personal, and warning failure would be possible to produce the major accidents such as blade drops, tower fractures.
Utility model content
The purpose of this utility model is the defect for overcoming prior art, there is provided a kind of simple structure, reliability are high, monitoring
As a result accurately it is used for the acoustic emission detection system of Wind turbines.
For achieving the above object, the utility model employs following technical scheme：
A kind of acoustic emission detection system for Wind turbines, passes including main frame 1, signal preamplifier 2 and sound emission
Sensor 3, respectively by electricity between the main frame 1 and signal preamplifier 2, signal preamplifier 2 and acoustic emission sensor 3
Cable 4 connects.The acoustic emission detection system for Wind turbines is provided with 16 signal preamplifiers 2 altogether, and each two is preposition
Signal amplifier 2 is one group, wherein installs one group on wind-powered machine unit hub flange, the root of 3 blades of Wind turbines respectively installs
One group, bottom fixed connection place respectively one group of the installation of the section tower of Wind turbines 4.
Further, the acoustic emission sensor 3 includes the shell 31 of cylindrical shape, and the top of the shell 31 is provided with lid
32, side is provided with the 4th port 34 of perceptual signal for exporting, and bottom outside is provided with magnet ring 33, and inside is provided with piezoelectric ceramics
Piece；The bottom surface of magnet ring 33, the bottom surface of piezoelectric ceramic piece are concordant with the bottom surface of shell 31.
Further, the main frame 1 and is located at by the first housing 12, the guidance panel 11 being located in front of the first housing 12
The the first circuit structure composition electrically connected inside first housing 12 and with guidance panel 11；The guidance panel 11 be provided with for
The first port 111 of signal input, the display 112 for display image, the button 113 for entering the operating instructions, and
For the power supply indicator 114 of indicating operating status, malfunction indicator lamp 115 and alarm indicator 116.
Further, 16 first ports 111 are provided with the guidance panel 11.
Further, 6 buttons 113 are provided with the guidance panel 11, be respectively used to input " on ", D score, " left side ",
" right side ", " determination " and " exiting " instructs.
Further, the signal preamplifier 2 includes base 22 and the second housing 21 above base 22, described
Second circuit structure is provided with inside housing 21, a side 23 of housing 21 is provided with the second port for signal input
24th, it is used for the 3rd port 25 of signal output, and the power interface 27 and power switch 28 for power input；The base
It is additionally provided with 22 for installing fixed through hole 28.
Further, the side 23 is provided with 4 second ports 24 and 4 the 3rd ports 25.
A kind of detection method adopted by above-mentioned acoustic emission detection system for Wind turbines, comprises the following steps：
(1) start, system initialization；
(2) monitor whether each road sensor signal produces bolt fracture warning？If having, (3) are gone to step；
(3) judge whether alarm logging is zero in same group of signal alarm register of the road sensor signal？If so, turn
Step (4)；If it is not, going to step (6)；
(4) judge the corresponding warning register alarm logging of alarm signal whether superthreshold？If so, (5) are gone to step；If
No, go to step (7)；
(5) output transducer failure alarm signal；
(6) bolt fracture alarm signal is exported；
(7) the corresponding warning register alarm logging value of alarm signal adds 1, goes to step (2).
Further, threshold value described in step (4) is 3～10.
The acoustic emission detection system for Wind turbines that the utility model is provided, by arranging 2 in each test point
The Redundancy Design of acoustic emission sensor, carries out combining to the result that two acoustic emission sensors are produced and sentences card, effectively can reduce
Fail to report the alert, probability of happening of false alarm so that monitoring result is more accurate.Meanwhile, with 16 tunnel acoustic emission signal on-line monitorings
Function, it is only necessary to main frame just can complete the fracture monitoring of 8 significant points bolts of a set of Wind turbines, and device can be
Installation and deployment are carried out to Wind turbines on the premise of not transforming, and apparatus structure is simple, high degree of automation.
Description of the drawings
Fig. 1 is a kind of overall structure diagram of the acoustic emission detection system for Wind turbines of the utility model；
Fig. 2 is a kind of main frame overall structure diagram of the acoustic emission detection system for Wind turbines of the utility model；
Fig. 3 is that a kind of signal preamplifier of the acoustic emission detection system for Wind turbines of the utility model is integrally tied
Structure schematic diagram；
Fig. 4 is a kind of acoustic emission sensor overall structure of the acoustic emission detection system for Wind turbines of the utility model
Schematic diagram；
Fig. 5 is a kind of acoustic emission sensor deployed position of the acoustic emission detection system for Wind turbines of the utility model
Schematic diagram；
Fig. 6 is a kind of bolt fracture signal detection flow process of acoustic emission detection system for Wind turbines of the utility model
Schematic diagram.
Specific embodiment
Below in conjunction with accompanying drawing 1 to 6, a kind of acoustic emission detection system for Wind turbines of the utility model is further illustrated
Specific embodiment.A kind of acoustic emission detection system for Wind turbines of the utility model is not limited to retouching for following examples
State.
As shown in figure 1, be a kind of overall structure signal of acoustic emission detection system for Wind turbines of the utility model,
Including main frame 1, signal preamplifier 2 and acoustic emission sensor 3, between the main frame 1 and signal preamplifier 2, preposition
Connected by cable 4 between signal amplifier 2 and acoustic emission sensor 3.
As shown in Fig. 2 being a kind of main frame overall structure of the acoustic emission detection system for Wind turbines of the utility model
Schematic diagram, the main frame 1 is by the first housing 12, the guidance panel 11 being located in front of the first housing 12, and is located at the first housing
The the first circuit structure composition electrically connected inside 12 and with guidance panel 11；The guidance panel 11 is provided with for signal input
First port 111, the display 112 for display image, for the button 113 that enters the operating instructions, and for indicating
The power supply indicator 114 of working condition, malfunction indicator lamp 115 and alarm indicator 116.16 are provided with the guidance panel 11
Individual first port 111.Be provided with 6 buttons 113 on the guidance panel 11, be respectively used to input " on ", D score, " left side ",
" right side ", " determination " and " exiting " instructs.The main frame 1 has 16 passage acoustic emission signal detectabilities, with acoustic emission signal
The functions such as data acquisition, record analysis, logic decision, display alarm.
As shown in figure 3, being a kind of advance signal amplification of acoustic emission detection system for Wind turbines of the utility model
2 overall structure diagram of device, the signal preamplifier 2 include base 22 and the second housing 21 above base 22,
Second circuit structure is provided with inside the housing 21, a side 23 of housing 21 is provided with the second end for signal input
Mouth 24, the 3rd port 25 for signal output, and the power interface 27 and power switch 28 for power input；The bottom
It is additionally provided with seat 22 for installing fixed through hole 28.The side 23 is provided with 4 second ports 24 and 4 the 3rd ports
25.The signal preamplifier 2 has 4 passage acoustic emission signal enlarging functions, and Main Function is to adopt acoustic emission sensor 3
The faint acoustic emission signal for collecting is amplified, and the first port 111 of long-distance transmissions to main frame 1.
As shown in figure 4, being that a kind of acoustic emission sensor of the acoustic emission detection system for Wind turbines of utility model is whole
Body structural representation, the acoustic emission sensor 3 include that the shell 31 of cylindrical shape, the top of the shell 31 are provided with lid 32,
Side is provided with the 4th port 34 of perceptual signal for exporting, and bottom outside is provided with magnet ring 33, and inside is provided with piezoelectric ceramic piece；Institute
State the bottom surface of the magnet ring 33, the bottom surface of piezoelectric ceramic piece concordant with the bottom surface of shell 31.
As shown in figure 5, being a kind of acoustic emission sensor 3 of the acoustic emission detection system for Wind turbines of the utility model
Deployed position schematic diagram, is provided with 16 signal preamplifiers 2 altogether, and each two signal preamplifier 2 is one group, wherein wind-powered electricity generation
Install on machine unit hub flange one group, the root of 3 blades of Wind turbines the bottom that a group, Wind turbines 4 save tower is respectively installed
One group is installed respectively in fixed connection place.
Meanwhile, two signal preamplifiers 2 are installed inside wind-powered machine unit hub, for being arranged on Wind turbines wheel
The signal of 8 collections of acoustic emission sensor 3 of the root of hub flange blade is amplified, and by wire transmission to main frame 1；?
Two signal preamplifiers 2 are installed in Wind turbines tower, are sent out for 8 sound to saving installed in Wind turbines 4 in tower
The signal for penetrating the collection of sensor 3 is amplified, and by wire transmission to main frame 1.First port 111 and the 3rd port 25,
Between Two-port netwerk 24 and the 4th port 34, it is preferred to use coaxial cable is attached as cable 4.
The acoustic emission detection system for Wind turbines that the utility model is provided, is supervised online with 16 tunnel acoustic emission signals
The function of survey, it is only necessary to which main frame 1 just can complete the fracture monitoring of 8 significant points bolts of a set of Wind turbines, can be
Installation and deployment are carried out to Wind turbines on the premise of not transforming, and apparatus structure is simple, high degree of automation.
As shown in fig. 6, being a kind of bolt fracture signal of the acoustic emission detection system for Wind turbines of the utility model
Testing process schematic diagram, comprises the following steps：
(1) start and system initialization；
(2) monitor whether each road sensor signal produces bolt fracture warning？If having, (3) are gone to step；
(3) judge whether alarm logging is zero in same group of signal alarm register of the road sensor signal？If so, turn
Step (4)；If it is not, going to step (6)；
(4) judge the corresponding warning register alarm logging of alarm signal whether superthreshold？If so, (5) are gone to step；If
No, go to step (7)；The preferred value of the threshold value is 3～10；
(5) output transducer failure alarm signal；
(6) bolt fracture alarm signal is exported；
(7) the corresponding warning register alarm logging value of alarm signal adds 1, goes to step (2).
The acoustic emission detection system for Wind turbines that the utility model is provided, by arranging 2 in each test point
The Redundancy Design of acoustic emission sensor, carries out combining to the result that two acoustic emission sensors are produced and sentences card, not only can be effective
Reduce and fail to report the alert, probability of happening of false alarm, discovery sensor failure can also be reported to the police in time so that detect function more
Plus abundant, testing result is more accurate.
Above content is with reference to specific preferred embodiment further detailed description of the utility model, it is impossible to
Identification is of the present utility model to be embodied as being confined to these explanations.Ordinary skill for the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should be all regarded
For belonging to protection domain of the present utility model.
Claims (7)
1. a kind of acoustic emission detection system for Wind turbines, including main frame (1), signal preamplifier (2) and sound emission
Sensor (3), main frame (1) and signal preamplifier (2), signal preamplifier (2) and acoustic emission sensor (3) it
Between respectively by cable (4) connect, it is characterised in that：Before the acoustic emission detection system for Wind turbines is provided with 16 altogether
Put signal amplifier (2), each two signal preamplifier (2) is one group, wherein install on wind-powered machine unit hub flange one group,
The root of 3 blades of Wind turbines respectively installs one group, bottom fixed connection place respectively one group of the installation of the section tower of Wind turbines 4.
2. the acoustic emission detection system for Wind turbines according to claim 1, it is characterised in that：The sound emission is passed
Sensor (3) includes cylindric shell (31), is provided with lid (32) at the top of shell (31), and side is provided with for exporting
The 4th port (34) of perceptual signal, bottom outside are provided with magnet ring (33), and inside is provided with piezoelectric ceramic piece；Magnet ring (33)
Bottom surface, the bottom surface of piezoelectric ceramic piece concordant with the bottom surface of shell (31).
3. the acoustic emission detection system for Wind turbines according to claim 1, it is characterised in that：State main frame (1) by
First housing (12), the guidance panel (11) being located in front of the first housing (12), and be located at the first housing (12) internal and with
The first circuit structure composition that guidance panel (11) is electrically connected；Guidance panel (11) are provided with for signal input first
Port (111), the display (112) for display image, the button (113) for entering the operating instructions, and be used for indicating
The power supply indicator (114) of working condition, malfunction indicator lamp (115) and alarm indicator (116).
4. the acoustic emission detection system for Wind turbines according to claim 3, it is characterised in that：The guidance panel
(11) 16 first ports (111) are provided with.
5. the acoustic emission detection system for Wind turbines according to claim 4, it is characterised in that：The guidance panel
(11) 6 buttons (113) are provided with, be respectively used to input " on ", D score, "left", "right", " determination " and " exiting " instruct.
6. the acoustic emission detection system for Wind turbines according to claim 1, it is characterised in that：The advance signal
Amplifier (2) includes base (22) and the second housing (21) being located above base (22), and described housing (21) are internal to be provided with
Second circuit structure, a side (23) of housing (21) are provided with the second port (24) for signal input, are used for signal
3rd port (25) of output, and the power interface (27) and power switch (28) for power input；Base (22)
On be additionally provided with for installing fixed through hole (28).
7. the acoustic emission detection system for Wind turbines according to claim 6, it is characterised in that：Side (23)
It is provided with 4 second ports (24) and 4 the 3rd ports (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620955912.9U CN206017062U (en) | 2016-08-26 | 2016-08-26 | A kind of acoustic emission detection system for Wind turbines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620955912.9U CN206017062U (en) | 2016-08-26 | 2016-08-26 | A kind of acoustic emission detection system for Wind turbines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206017062U true CN206017062U (en) | 2017-03-15 |
Family
ID=58252184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620955912.9U Expired - Fee Related CN206017062U (en) | 2016-08-26 | 2016-08-26 | A kind of acoustic emission detection system for Wind turbines |
Country Status (1)
| Country | Link |
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| CN (1) | CN206017062U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644070A (en) * | 2018-05-16 | 2018-10-12 | 浙江运达风电股份有限公司 | A kind of online timing detection method of wind power generating set blade blade root bolt fracture and system |
| CN115166032B (en) * | 2022-05-23 | 2024-04-19 | 东南大学 | Device and method for detecting cracks of fan blades |
-
2016
- 2016-08-26 CN CN201620955912.9U patent/CN206017062U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644070A (en) * | 2018-05-16 | 2018-10-12 | 浙江运达风电股份有限公司 | A kind of online timing detection method of wind power generating set blade blade root bolt fracture and system |
| CN115166032B (en) * | 2022-05-23 | 2024-04-19 | 东南大学 | Device and method for detecting cracks of fan blades |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 Termination date: 20170826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |