CN210738740U - Alarm device for bonding and cracking of power-increasing extension section of wind turbine blade of wind turbine generator system - Google Patents
Alarm device for bonding and cracking of power-increasing extension section of wind turbine blade of wind turbine generator system Download PDFInfo
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- CN210738740U CN210738740U CN201921157149.5U CN201921157149U CN210738740U CN 210738740 U CN210738740 U CN 210738740U CN 201921157149 U CN201921157149 U CN 201921157149U CN 210738740 U CN210738740 U CN 210738740U
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Abstract
The utility model discloses a wind generating set wind wheel blade increases merit and prolongs alarm device of festival bonding fracture, include along the optic fibre one or more optic fibre crack sensor of pasting on former wind power generation blade and extension festival adhesive position, the crack sensor uses during the special connecting cable draws the optic fibre signal demodulation appearance of placing in wheel hub along the working face trailing edge, the utility model discloses can bond inefficacy at blade extension festival, when the adhesive position produced the crackle, in time automatic notification wind electric field watch personnel shut down the inspection and handle, prevent to produce the apex accident of falling, avoid personnel, loss of property. The utility model relates to an advance, simple installation, reliability are high, and the monitoring mode cost is lower and have very strong application expansibility for other forms.
Description
Technical Field
The utility model relates to a wind-powered electricity generation blade extension festival increases merit technical field, especially relates to a wind generating set wind wheel blade increases merit extension festival bonding fracture's alarm device.
Background
According to the statistics of the industry, in 2018, a newly-added grid-connected wind power installed capacity 2059 ten thousand kilowatts is added, the accumulated grid-connected installed capacity reaches 1.84 hundred million kilowatts, and the accumulated grid-connected installed capacity accounts for 9.7 percent of the total power generation installed capacity. In 2018, the wind power generation amount accounts for 5.2% of the total power generation amount when 3660 hundred million kilowatts hour, and about 9.2 million aftermarkets exist in China in terms of 2 megawatt single-unit capacity. In order to improve the economic benefit of a wind power plant, the method for improving the generating capacity of a unit by using a blade extension technology is a main means for improving the wind power plant technology in the future, and has great market potential, but because an extension joint is bonded on an original blade, the risk of falling caused by cracking of a bonding position exists in long-term operation, hidden dangers are brought to a unit manufacturer and a wind farm owner, and the development of an economic and reliable technical means for monitoring the bonding cracking of the extension joint in real time is imperative.
SUMMERY OF THE UTILITY MODEL
Based on the above purpose, the utility model provides a wind generating set wind wheel blade increases merit extension festival bonding fracture's alarm device.
For realizing the utility model discloses a purpose, the utility model provides a wind generating set wind wheel blade increases merit extension section bonding fracture's alarm device, include on former wind power generation blade and extension section bonding position along the optic fibre one or a plurality of optic fibre sensor that pastes, the fracture sensor uses the special connection cable to draw the optic fibre signal demodulation appearance of placing in wheel hub along the working face trailing edge, and when pasting optic fibre sensor position that splits, the optic fibre signal demodulation appearance can catch the fracture signal and pass through GSM or GPRS network transmission to control system or removal receiving terminal with the fracture signal to realized the real-time quick monitoring to bonding position fracture.
Wherein, the upper edge of the bonding position refers to the area of the extension section and the bonding section of the blade closest to the blade root.
The upper edge of the bonding position is an annular region, the optical fiber crack sensors are arranged at intervals in the annular region, the number of the optical fiber crack sensors is adjusted according to the size of the actual bonding chord length, and the optical fiber crack sensors are connected in series by using connecting cables.
The sensor substrate of the optical fiber cracking sensor adopts the glass fiber cloth and resin with equal strength of the wind power blades, and the normal fatigue property of the sensor is ensured.
The connecting cable between the optical fiber crack sensor and the optical fiber signal demodulator is adhered to the rear edge position of the wind power blade through a 3M adhesive tape, and when the cable is led to the blade root position, the blade end face is punched to enable the optical cable to penetrate into the hub, so that the optical cable is connected with the optical fiber signal demodulator.
The structure of the connecting cable is an optical fiber and a plastic sleeve.
Wherein, the protection level of the optical fiber signal demodulator shell is up to IP65 and above.
The model of the optical fiber signal demodulator is GF-F01.
Compared with the prior art, the beneficial effects of the utility model are that, the utility model discloses can bond inefficacy at blade extension festival, when the bonding position produced the crackle, in time automatic notification wind electric field on duty personnel shut down the inspection and handle, prevent to produce apex accident of falling, avoid personnel, loss of property. The utility model relates to an advance, simple installation, reliability are high, and the monitoring mode cost is lower and have very strong application expansibility for other forms.
Drawings
Figure 1 shows a schematic structural diagram of the present application,
FIG. 2 is a schematic diagram of a fiber crack sensor.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when used in this specification the singular forms "a", "an" and/or "the" include "specify the presence of stated features, steps, operations, elements, or modules, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
As shown in figure 1, the utility model relates to an automatic alarm device of wind generating set blade increase merit extension festival bonding position fracture. The device can be when the fracture appears in blade extension festival bonding position, sends alarm signal to wind field on duty personnel automatically, accomplishes timely processing, prevents that the apex from falling, avoids personnel, loss of property. According to the device, an optical fiber cracking sensor 3 (a pressure surface which bears the pressure surface when the blade works) and an optical fiber cracking sensor 4 (a suction surface which bears the tension surface when the blade works) are adhered to the upper edge 5 of the bonding position of an original wind power generation blade 1 and an extension joint 2, and then a special connecting cable 6 for the sensors is led into an optical fiber signal demodulator 7 arranged in a hub along the rear edge of the working surface. If the position where the optical fiber sensor is adhered cracks, the demodulator can capture a cracking signal and transmit the cracking signal to a control system or a mobile receiving terminal through a GSM or GPRS network, so that the cracking of the adhering position is rapidly monitored in real time.
The optical fiber cracking sensor is based on an optical fiber sensing technology, if cracks are generated on the line of an extension joint and a wind power blade bonding area, the optical fiber sensor is also broken, a sensitive grid in the sensor can not return a wavelength change signal, and a demodulator immediately sends an alarm instruction through GSM or GPRS after identifying the broken grid. The sensor substrate adopts the glass fiber cloth and resin with equal strength of the wind power blade, so that the normal fatigue property of the sensor is ensured. The number of the optical fiber cracking sensors can be adjusted according to the size of the actual bonding chord length, and the added sensors are connected in series only by using connecting cables. The optical fiber cracking sensor is a sensor which is generally used for monitoring cracking of composite materials, and can also be applied to state monitoring of the rear edge of a wind power blade and other positions which are easy to delaminate and crack.
The connecting cable between the optical fiber cracking sensor and the demodulator is adhered to the position of the rear edge (pressure surface) of the wind power blade by a 3M adhesive tape, and when the cable is led to the position of the blade root, the end face of the blade is punched to enable the optical cable to penetrate into the hub, so that the optical cable is connected with the demodulator.
The structure of the connecting cable between the optical fiber cracking sensor and the demodulator is that the optical fiber is additionally provided with a plastic sleeve, and the material of the plastic sleeve is subjected to an aging test to ensure the service life of the cable.
The demodulator is used for identifying a fiber breakage signal of the optical fiber breakage sensor, realizing analog-to-digital conversion through an internal integration algorithm of the demodulator, transmitting a digital signal to a control system or a mobile receiving terminal, and simultaneously carrying out sound and image warning.
The demodulator selects a proper position and a proper installation mode according to the characteristics of structures and spaces in the hubs of various types of wind generating sets, and the demodulator fixing nut recommends adding a spring washer to facilitate the filtration of vibration generated in the running process of the set. The protection level of the demodulator shell can reach IP65 and above.
The upper edge 5 of the bonding position refers to the area of the extension section and the bonding section of the blade, which is closest to the blade root. And (4) according to theoretical model extension joint bonding cracking failure mode analysis and actual failure mode verification, if the extension joint bonding fails, the upper edge of the bonding position is the first cracking position. If other types of extension joint and blade connection methods are adopted, the sensor can still be used for monitoring. The whole set of device should formulate complete operating rules before wind-powered electricity generation field construction, select key inspection item, guarantee construction quality.
The optical fiber cracking sensor used by the device has a composition structure shown in figure 2, wherein in figure 2, 1 is a sensor surface covering layer, 2 is a sensor matrix, 3 is a Bragg grating, and 4 is an optical fiber.
The lower surface of the optical fiber cracking sensor base body is adhered to the surface of the blade, the adhering position of the sensor is that the length center of the sensor base body is aligned to the edge of the extension section, and half of the sensor base body is adhered to the surface of the original blade and the surface of the extension section.
A modified silane sealing adhesive (MS1937) is adopted as a sensor pasting material to prevent the sensor from falling off under severe environments such as high temperature and high humidity.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides an alarm device of wind generating set wind wheel blade increase work extension section bonding fracture which characterized in that, includes one or more optic fibre crack sensor that pastes at the extension section (2) edge position after bonding with former wind power generation blade (1), crack sensor uses special connecting cable (6) to lead to in the optic fibre signal demodulation appearance (7) of placing in the wheel hub along the working face trailing edge, and when pasting optic fibre crack sensor position and take place the fracture, optic fibre signal demodulation appearance (7) can catch the fracture signal and transmit the fracture signal to control system or removal receiving terminal through GSM or GPRS network to the real-time rapid monitoring of bonding position fracture has been realized.
2. The device for warning the bonding cracking of the power-increasing extension joint of the wind turbine blade of the wind turbine generator system according to claim 1, wherein the bonding position refers to the edge position of the extension joint bonded with the original blade.
3. The device for warning the bonding cracking of the power increasing extension section of the wind turbine blade of the wind turbine generator system according to claim 1, wherein the upper edge (5) of the bonding position is an annular region, the optical fiber cracking sensors are arranged at intervals in the annular region, the number of the optical fiber cracking sensors is adjusted according to the size of the actual bonding chord length, and the optical fiber cracking sensors are connected in series by using connecting cables.
4. The device for alarming the bonding and the cracking of the power-increasing extension joint of the wind turbine blade of the wind turbine generator system according to claim 1, wherein a sensor substrate of the optical fiber cracking sensor is made of glass fiber cloth and resin with equal strength of the wind turbine blade, so that the normal fatigue property of the sensor is ensured.
5. The device for alarming the bonding cracking of the power-increasing extension section of the wind turbine blade of the wind turbine generator system according to claim 1, wherein the connecting cable (6) between the optical fiber cracking sensor and the optical fiber signal demodulator (7) is adhered to the rear edge of the wind turbine blade by a 3M adhesive tape, and when the cable is led to the blade root, the end face of the blade is perforated to enable the optical cable to penetrate into the hub, so that the connection with the optical fiber signal demodulator (7) is realized.
6. The device for warning the bonding and the cracking of the power-increasing extension joint of the wind turbine blade of the wind turbine generator system according to claim 1, wherein the connecting cable (6) is an optical fiber and plastic sleeve.
7. The device for warning the bonding cracking of the power-increasing extension joint of the wind turbine blade of the wind turbine generator system according to claim 1, wherein the protection grade of the shell of the optical fiber signal demodulator (7) is IP65 or above.
8. The device for warning the bonding and the cracking of the power-increasing extension joint of the wind turbine blade of the wind turbine generator system according to claim 1, wherein the type of the optical fiber signal demodulator (7) is GF-F01.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921157149.5U CN210738740U (en) | 2019-07-23 | 2019-07-23 | Alarm device for bonding and cracking of power-increasing extension section of wind turbine blade of wind turbine generator system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921157149.5U CN210738740U (en) | 2019-07-23 | 2019-07-23 | Alarm device for bonding and cracking of power-increasing extension section of wind turbine blade of wind turbine generator system |
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| CN210738740U true CN210738740U (en) | 2020-06-12 |
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| CN201921157149.5U Active CN210738740U (en) | 2019-07-23 | 2019-07-23 | Alarm device for bonding and cracking of power-increasing extension section of wind turbine blade of wind turbine generator system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459594A (en) * | 2022-01-25 | 2022-05-10 | 无锡科晟光子科技有限公司 | Wind power generation monitoring system based on distributed vibration optical fiber |
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2019
- 2019-07-23 CN CN201921157149.5U patent/CN210738740U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459594A (en) * | 2022-01-25 | 2022-05-10 | 无锡科晟光子科技有限公司 | Wind power generation monitoring system based on distributed vibration optical fiber |
| CN114459594B (en) * | 2022-01-25 | 2024-01-23 | 无锡科晟光子科技有限公司 | Wind power generation monitoring system based on distributed vibration optical fiber |
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Address after: 300384 1016, building 5, No. 15, Huake 1st Road, Huayuan Industrial Zone, hi tech Zone, Binhai New Area, Tianjin Patentee after: Zhongke Guotong testing and certification (Tianjin) Co.,Ltd. Address before: 300384 1016, building 5, No.15, Huake 1st Road, Huayuan Industrial Zone, Binhai New Area, Tianjin Patentee before: ZHONGKE GUOFENG TESTING (TIANJIN) Co.,Ltd. |